Merge branch 'master' into stringlate-fr-8830

.gitignore

@@ -1,4 +1,5 @@
 *.iml
+*.aab
 .gradle
 /local.properties
 /gradle.properties
@@ -6,5 +7,5 @@
 .DS_Store
 /build
 /captures
-release.keystore
+keystore.jks
-signing.properties
+keystore.properties

CHANGELOG.md

@@ -1,6 +1,226 @@
 Changelog
 ==========
 
+Version 6.5.0 *(2019-02-07)*
+----------------------------
+
+ * Allow rotating fullscreen images with gestures, if "Allow deep zooming images" option is enabled
+ * Zoom out videos and gifs after device rotation
+
+Version 6.4.1 *(2019-01-29)*
+----------------------------
+
+ * Fixed some crashes related to zoomable videos
+ * Disable the Close Down gesture at GIFs and videos, if they are zoomed in
+
+Version 6.4.0 *(2019-01-29)*
+----------------------------
+
+ * Implemented export/importing for app settings and other preferences, like sorting
+ * Allow hiding Notch on fullscreen view on Android 9+
+ * Some gif/video zoom related improvements
+ * Autosave images zoomed at the fullscreen view
+ * Many other UX and stability improvements
+
+Version 6.3.2 *(2019-01-23)*
+----------------------------
+
+ * Fixed some fullscreen image and gif issues related to zooming
+ * Show directly included folders even if they contain a .nomedia file
+
+Version 6.3.1 *(2019-01-22)*
+----------------------------
+
+ * Fixed fullscreen images crashing when the app was installed on an SD card
+ * A couple other fullscreen image viewer improvements
+ * Allow batch rotating only images, ignore other file types
+
+Version 6.3.0 *(2019-01-17)*
+----------------------------
+
+ * Allow zooming GIFs and videos
+ * Allow sharing images directly from the editor
+ * Allow drawing in the editor
+ * If a folder is directly excluded, make it a higher priority than some included parent folder
+ * Added batch rotating from the thumbnails view
+ * Many other smaller improvements
+
+Version 6.2.2 *(2019-01-10)*
+----------------------------
+
+ * Reverted to the old way of playing videos, opening them on a separate screen can be enabled in the app settings
+ * Added some memory related improvements at displaying fullscreen images
+ * Allow showing videos in slideshows
+
+Version 6.2.1 *(2019-01-08)*
+----------------------------
+
+ * Fixed some menu buttons at the video player activity
+ * Added buttons to the videoplayer for going to the previous/next item
+ * Allow pressing play/pause at the video player at fullscreen mode
+ * Properly retain exif values after editing a file, when overwriting the source file
+
+Version 6.2.0 *(2019-01-04)*
+----------------------------
+
+ * Rewrote video playback, use a separate screen + added fast-forwarding with horizontal swiping
+ * Added optional 1:1 pixel ratio zooming with two double taps at fullscreen view
+ * Allow adding Copy at the fullscreen bottom actions
+ * Always include images at slideshows, never videos
+ * Fixed scanning of some predefined folders for images
+ * Some other stability/performance/translation improvements
+
+Version 6.1.3 *(2018-12-26)*
+----------------------------
+
+ * Fixed a glitch at zooming fullscreen images with double tap
+ * Hide favorite items from hidden folders, if showing hidden items is disabled
+
+Version 6.1.2 *(2018-12-24)*
+----------------------------
+
+ * Done a few performance improvements here and there
+ * Allow changing view type individually per folder
+ * Merry Christmas!
+
+Version 6.1.1 *(2018-12-18)*
+----------------------------
+
+ * Fixing some crashes
+
+Version 6.1.0 *(2018-12-17)*
+----------------------------
+
+ * Added an initial widget implementation for creating homescreen folder shortcuts
+ * Added optional grouping of direct subfolders, as a check at the "Change view type" dialog
+ * Added an option to set custom crop aspect ratio at the editor
+ * Save exif data at edited files on Android 7+
+ * Handle only Mass Storage USB devices, ignore the rest
+ * Many other smaller UX/stability/performance improvements
+
+Version 6.0.4 *(2018-12-04)*
+----------------------------
+
+ * Limit automatic spam folder exclusion to the "/Android/data" folder
+
+Version 6.0.3 *(2018-12-02)*
+----------------------------
+
+ * Added multiple predefined aspect ratios at the Editor + remember the last used ratio
+ * Fix some issue with deleted items not appearing in the Recycle Bin, causing the app to take up too much space
+ * At delete/copy/move operations on folders apply them only on the visible files, take filters/hiding into account
+ * Do not exclude whole Data folder by default, be smarter about filtering out spam folders
+ * Added support for Sony RAW ".arw" files
+ * Optimize video duration fetching at thumbnails
+
+Version 6.0.2 *(2018-11-19)*
+----------------------------
+
+ * Adding a crashfix related to showing video duration
+
+Version 6.0.1 *(2018-11-19)*
+----------------------------
+
+ * Added optional displaying video duration on thumbnails
+ * Fixed keeping last_modified value at copy/move in some cases
+ * Exclude the Data folder by default
+ * Many translation, UX and stability improvements
+
+Version 6.0.0 *(2018-11-04)*
+----------------------------
+
+ * Initial Pro version
+
+Version 5.1.4 *(2018-11-28)*
+----------------------------
+
+ * Make sure the "Upgrade to Pro" popup isn't shown at first launch
+ * This version of the app is no longer maintained, please upgrade to the Pro version. You can find the Upgrade button at the top of the app Settings.
+
+Version 5.1.3 *(2018-11-04)*
+----------------------------
+
+ * Adding an option to store last video playback position (by mathevs)
+ * Adding a "Keep both" conflict resolution at copy/move (by Doubl3MM)
+ * Improved panoramic video detection
+ * Remove some glitches related to third party file opening
+ * Do not exclude the Data folder by default
+ * Removed the "Avoid showing Whats New at app startup" option
+
+Version 5.1.2 *(2018-10-30)*
+----------------------------
+
+ * Added a new option for password protecting file deletion/move
+ * Improved panorama video detection
+ * Improved the opening of media files without file extension
+ * Disabled move operation on Recycle bin items, use Restore
+ * Fixed handling of some third party image picker intents
+ * Fixed slideshow looping and a couple other UX glitches
+ * Improved the stability of retrieving cached files
+ * Hi
+
+Version 5.1.1 *(2018-10-23)*
+----------------------------
+
+ * Fixing the inability to delete SD card files
+
+Version 5.1.0 *(2018-10-23)*
+----------------------------
+
+ * Added support for panorama videos
+ * Added an extra check to avoid trying deleting files without write permission
+ * Added an initial implementation of renaming multiple items at once
+ * Added some performance improvements at item de/selection
+ * Allow enabling hidden item visibility at the copy/move destination picker
+ * Allow closing fullscreen view with swipe down gestures (can be disabled in settings)
+ * Fixed a glitch with Favorite items getting unselected every day
+ * Fixed exposure time displayed at long exposure photos
+ * Fixed fullscreen images being sometimes totally zoomed in after device rotation
+ * Fixed slideshow direction
+ * Made loading initial fullscreen view quicker and fullscreen toggling more reliable
+ * Not sure what else, nobody reads this anyway
+
+Version 5.0.1 *(2018-10-17)*
+----------------------------
+
+ * Adding some crashfixes
+
+Version 5.0.0 *(2018-10-17)*
+----------------------------
+
+ * Increased the minimal required Android OS version to 5 (Lollipop)
+ * Rewrote file selection for more robustness
+ * Added a new option for showing the Recycle Bin as the last folder
+ * Added Search for searching folders by names
+ * Replaced the G+ button with Reddit
+ * Couple smaller glitch fixes and improvements
+
+Version 4.6.5 *(2018-10-02)*
+----------------------------
+
+ * Added notch support for Android 9
+ * Allow faster video seeking by dragging a finger at the bottom seekbar
+ * Use a different way of displaying fullscreen GIFs
+ * Added a new toggle for trying to show the best possible image quality
+ * Keep Favorite items marked after moving
+ * Fixed some glitches related to toggling fullscreen mode
+ * Many other smaller improvements
+
+Version 4.6.4 *(2018-09-22)*
+----------------------------
+
+ * Fixed lag at zooming fullscreen images on some devices
+
+Version 4.6.3 *(2018-09-21)*
+----------------------------
+
+ * Improved zooming performance at fullscreen view
+ * Fixed showing conflict resolution dialog at Move
+ * Fixed selection check icons at horizontal scrolling
+ * Fixed displaying some fullscreen images, where file path contained percentage sign or hashtag
+ * Optimized many database operations
+ * Fixed many other smaller issues
+
 Version 4.6.2 *(2018-09-05)*
 ----------------------------
 

README.md

@@ -4,21 +4,39 @@
 
 A gallery for viewing photos and videos.
 
-A simple tool usable for viewing photos and videos. Items can be sorted by date, size, name both ascending or descending, photos can be zoomed in. Media files are shown in multiple columns depending on the size of the display, you can change the column count by pinch gestures. They can be renamed, shared, deleted, copied, moved. Images can also be cropped, rotated, flipped or set as Wallpaper directly from the app.
+A highly customizable gallery capable of displaying many different image and video types including SVGs, RAWs, panoramic photos and videos.
 
-The Gallery is also offered for third party usage for previewing images / videos, adding attachments at email clients etc. It's perfect for everyday usage.
+It is open source, contains no ads or unnecessary permissions.
 
-Contains no ads or unnecessary permissions. It is fully opensource, provides customizable colors.
+Let's list some of its features worth mentioning:
+1. Search
+2. Slideshow
+3. Notch support
+4. Pinning folders to the top
+5. Filtering media files by type
+6. Recycle bin for easy file recovery
+7. Fullscreen view orientation locking
+8. Marking favorite files for easy access
+9. Quick fullscreen media closing with down gesture
+10. An editor for modifying images and applying filters
+11. Password protection for protecting hidden items or the whole app
+12. Changing the thumbnail column count with gestures or menu buttons
+13. Customizable bottom actions at the fullscreen view for quick access
+14. Showing extended details over fullscreen media with desired file properties
+15. Several different ways of sorting or grouping items, both ascending and descending
+16. Hiding folders (affects other apps too), excluding folders (affects only Simple Gallery)
 
-This app is just one piece of a bigger series of apps. You can find the rest of them at http://www.simplemobiletools.com
+The fingerprint permission is needed for locking either hidden item visibility, the whole app, or protecting files from being deleted.
 
-<a href='https://play.google.com/store/apps/details?id=com.simplemobiletools.gallery'><img src='http://simplemobiletools.github.io/assets/public/google-play.png' alt='Get it on Google Play' height='45' /></a>
+This app is just one piece of a bigger series of apps. You can find the rest of them at https://www.simplemobiletools.com
-<a href='https://f-droid.org/packages/com.simplemobiletools.gallery'><img src='http://simplemobiletools.github.io/assets/public/f-droid.png' alt='Get it on F-Droid' height='45' /></a>
+
+<a href='https://play.google.com/store/apps/details?id=com.simplemobiletools.gallery.pro'><img src='http://simplemobiletools.github.io/assets/public/google-play.png' alt='Get it on Google Play' height='45' /></a>
+<a href='https://f-droid.org/packages/com.simplemobiletools.gallery.pro'><img src='http://simplemobiletools.github.io/assets/public/f-droid.png' alt='Get it on F-Droid' height='45' /></a>
 
 <div style="display:flex;">
 <img alt="App image" src="fastlane/metadata/android/en-US/images/phoneScreenshots/app.jpg" width="30%">
 <img alt="App image" src="fastlane/metadata/android/en-US/images/phoneScreenshots/app_2.jpg" width="30%">
-<img alt="App image" src="fastlane/metadata/android/en-US/images/phoneScreenshots/app_5.jpg" width="30%">
+<img alt="App image" src="fastlane/metadata/android/en-US/images/phoneScreenshots/app_3.jpg" width="30%">
 </div>
 
 License

app/build.gradle

@@ -3,22 +3,31 @@ apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
 apply plugin: 'kotlin-kapt'
 
+def keystorePropertiesFile = rootProject.file("keystore.properties")
+def keystoreProperties = new Properties()
+keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
+
 android {
     compileSdkVersion 28
-    buildToolsVersion "28.0.2"
+    buildToolsVersion "28.0.3"
 
     defaultConfig {
-        applicationId "com.simplemobiletools.gallery"
+        applicationId "com.simplemobiletools.gallery.pro"
-        minSdkVersion 16
+        minSdkVersion 21
         targetSdkVersion 28
-        versionCode 198
+        versionCode 228
-        versionName "4.6.2"
+        versionName "6.5.0"
         multiDexEnabled true
         setProperty("archivesBaseName", "gallery")
     }
 
     signingConfigs {
-        release
+        release {
+            keyAlias keystoreProperties['keyAlias']
+            keyPassword keystoreProperties['keyPassword']
+            storeFile file(keystoreProperties['storeFile'])
+            storePassword keystoreProperties['storePassword']
+        }
     }
 
     buildTypes {
@@ -40,49 +49,36 @@ android {
         checkReleaseBuilds false
         abortOnError false
     }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    packagingOptions {
+        exclude 'META-INF/library_release.kotlin_module'
+    }
 }
 
 dependencies {
-    implementation 'com.simplemobiletools:commons:4.7.14'
+    implementation 'com.simplemobiletools:commons:5.7.6'
-    implementation 'com.theartofdev.edmodo:android-image-cropper:2.7.0'
+    implementation 'com.theartofdev.edmodo:android-image-cropper:2.8.0'
-    implementation 'com.android.support:multidex:1.0.3'
+    implementation 'androidx.multidex:multidex:2.0.1'
     implementation 'it.sephiroth.android.exif:library:1.0.1'
-    implementation 'pl.droidsonroids.gif:android-gif-drawable:1.2.15'
+    implementation 'pl.droidsonroids.gif:android-gif-drawable:1.2.16'
-    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.0-alpha3'
-    implementation 'com.google.android.exoplayer:exoplayer-core:2.8.4'
+    implementation 'com.google.android.exoplayer:exoplayer-core:2.9.2'
-    implementation 'com.google.vr:sdk-panowidget:1.150.0'
+    implementation 'com.google.vr:sdk-panowidget:1.180.0'
+    implementation 'com.google.vr:sdk-videowidget:1.180.0'
     implementation 'org.apache.sanselan:sanselan:0.97-incubator'
     implementation 'info.androidhive:imagefilters:1.0.7'
     implementation 'com.squareup.picasso:picasso:2.71828'
     implementation 'com.caverock:androidsvg-aar:1.3'
+    implementation 'com.github.tibbi:gestureviews:bd0a8e67a1'
+    implementation 'com.github.tibbi:subsampling-scale-image-view:2fe77ff361'
     kapt 'com.github.bumptech.glide:compiler:4.8.0' // keep it here too, not just in Commons, else loading SVGs wont work
 
-    kapt "android.arch.persistence.room:compiler:1.1.1"
+    kapt 'androidx.room:room-compiler:2.0.0'
-    implementation "android.arch.persistence.room:runtime:1.1.1"
+    implementation 'androidx.room:room-runtime:2.0.0'
-    annotationProcessor "android.arch.persistence.room:compiler:1.1.1"
+    annotationProcessor 'androidx.room:room-compiler:2.0.0'
-
-    //implementation 'com.davemorrissey.labs:subsampling-scale-image-view:3.9.0'
-    implementation 'com.github.tibbi:subsampling-scale-image-view:v3.10.0-fork'
-
-    // implementation 'com.github.chrisbanes:PhotoView:2.1.4'
-    implementation 'com.github.tibbi:PhotoView:2.1.4-fork'
-}
-
-Properties props = new Properties()
-def propFile = new File('signing.properties')
-if (propFile.canRead()) {
-    props.load(new FileInputStream(propFile))
-
-    if (props != null && props.containsKey('STORE_FILE') && props.containsKey('KEY_ALIAS') && props.containsKey('PASSWORD')) {
-        android.signingConfigs.release.storeFile = file(props['STORE_FILE'])
-        android.signingConfigs.release.storePassword = props['PASSWORD']
-        android.signingConfigs.release.keyAlias = props['KEY_ALIAS']
-        android.signingConfigs.release.keyPassword = props['PASSWORD']
-    } else {
-        println 'signing.properties found but some entries are missing'
-        android.buildTypes.release.signingConfig = null
-    }
-} else {
-    println 'signing.properties not found'
-    android.buildTypes.release.signingConfig = null
 }

app/src/main/AndroidManifest.xml

@@ -2,7 +2,7 @@
 <manifest
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
-    package="com.simplemobiletools.gallery"
+    package="com.simplemobiletools.gallery.pro"
     android:installLocation="auto">
 
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
@@ -32,6 +32,14 @@
             android:name=".activities.MainActivity"
             android:resizeableActivity="true">
 
+            <meta-data
+                android:name="android.app.default_searchable"
+                android:resource="@xml/searchable"/>
+
+            <intent-filter>
+                <action android:name="android.intent.action.SEARCH"/>
+            </intent-filter>
+
             <intent-filter>
                 <action android:name="android.intent.action.PICK"/>
                 <category android:name="android.intent.category.DEFAULT"/>
@@ -115,7 +123,17 @@
             android:configChanges="orientation|keyboardHidden|screenSize"/>
 
         <activity
-            android:name=".activities.PanoramaActivity"
+            android:name=".activities.VideoPlayerActivity"
+            android:configChanges="orientation|keyboardHidden|screenSize"
+            android:parentActivityName=".activities.MediaActivity"/>
+
+        <activity
+            android:name=".activities.PanoramaPhotoActivity"
+            android:configChanges="orientation|keyboardHidden|screenSize"
+            android:theme="@style/FullScreenTheme"/>
+
+        <activity
+            android:name=".activities.PanoramaVideoActivity"
             android:configChanges="orientation|keyboardHidden|screenSize"
             android:theme="@style/FullScreenTheme"/>
 
@@ -202,8 +220,17 @@
             </intent-filter>
         </activity>
 
+        <activity
+            android:name=".activities.WidgetConfigureActivity"
+            android:screenOrientation="portrait"
+            android:theme="@style/MyWidgetConfigTheme">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_CONFIGURE"/>
+            </intent-filter>
+        </activity>
+
         <provider
-            android:name="android.support.v4.content.FileProvider"
+            android:name="androidx.core.content.FileProvider"
             android:authorities="${applicationId}.provider"
             android:exported="false"
             android:grantUriPermissions="true">
@@ -220,6 +247,18 @@
             </intent-filter>
         </receiver>
 
+        <receiver
+            android:name=".helpers.MyWidgetProvider"
+            android:icon="@drawable/img_widget_preview">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>
+            </intent-filter>
+
+            <meta-data
+                android:name="android.appwidget.provider"
+                android:resource="@xml/widget_info"/>
+        </receiver>
+
         <activity-alias
             android:name=".activities.SplashActivity.Red"
             android:enabled="false"

app/src/main/kotlin/com/simplemobiletools/gallery/activities/SettingsActivity.kt

@@ -1,483 +0,0 @@
-package com.simplemobiletools.gallery.activities
-
-import android.content.Intent
-import android.content.res.Resources
-import android.os.Bundle
-import com.simplemobiletools.commons.dialogs.ConfirmationDialog
-import com.simplemobiletools.commons.dialogs.RadioGroupDialog
-import com.simplemobiletools.commons.dialogs.SecurityDialog
-import com.simplemobiletools.commons.extensions.*
-import com.simplemobiletools.commons.helpers.PROTECTION_FINGERPRINT
-import com.simplemobiletools.commons.helpers.SHOW_ALL_TABS
-import com.simplemobiletools.commons.helpers.sumByLong
-import com.simplemobiletools.commons.models.RadioItem
-import com.simplemobiletools.gallery.R
-import com.simplemobiletools.gallery.dialogs.ManageBottomActionsDialog
-import com.simplemobiletools.gallery.dialogs.ManageExtendedDetailsDialog
-import com.simplemobiletools.gallery.extensions.config
-import com.simplemobiletools.gallery.extensions.emptyTheRecycleBin
-import com.simplemobiletools.gallery.extensions.galleryDB
-import com.simplemobiletools.gallery.extensions.showRecycleBinEmptyingDialog
-import com.simplemobiletools.gallery.helpers.DEFAULT_BOTTOM_ACTIONS
-import com.simplemobiletools.gallery.helpers.ROTATE_BY_ASPECT_RATIO
-import com.simplemobiletools.gallery.helpers.ROTATE_BY_DEVICE_ROTATION
-import com.simplemobiletools.gallery.helpers.ROTATE_BY_SYSTEM_SETTING
-import kotlinx.android.synthetic.main.activity_settings.*
-import java.util.*
-
-class SettingsActivity : SimpleActivity() {
-    lateinit var res: Resources
-    private var mRecycleBinContentSize = 0L
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_settings)
-        res = resources
-    }
-
-    override fun onResume() {
-        super.onResume()
-
-        setupPurchaseThankYou()
-        setupCustomizeColors()
-        setupUseEnglish()
-        setupAvoidWhatsNew()
-        setupManageIncludedFolders()
-        setupManageExcludedFolders()
-        setupManageHiddenFolders()
-        setupShowHiddenItems()
-        setupDoExtraCheck()
-        setupAutoplayVideos()
-        setupLoopVideos()
-        setupAnimateGifs()
-        setupMaxBrightness()
-        setupCropThumbnails()
-        setupDarkBackground()
-        setupScrollHorizontally()
-        setupScreenRotation()
-        setupHideSystemUI()
-        setupPasswordProtection()
-        setupAppPasswordProtection()
-        setupDeleteEmptyFolders()
-        setupAllowPhotoGestures()
-        setupAllowVideoGestures()
-        setupBottomActions()
-        setupShowMediaCount()
-        setupKeepLastModified()
-        setupShowInfoBubble()
-        setupEnablePullToRefresh()
-        setupAllowZoomingImages()
-        setupOneFingerZoom()
-        setupAllowInstantChange()
-        setupShowExtendedDetails()
-        setupHideExtendedDetails()
-        setupManageExtendedDetails()
-        setupSkipDeleteConfirmation()
-        setupManageBottomActions()
-        setupUseRecycleBin()
-        setupShowRecycleBin()
-        setupEmptyRecycleBin()
-        updateTextColors(settings_holder)
-        setupSectionColors()
-    }
-
-    private fun setupSectionColors() {
-        val adjustedPrimaryColor = getAdjustedPrimaryColor()
-        arrayListOf(visibility_label, videos_label, thumbnails_label, scrolling_label, fullscreen_media_label, security_label,
-                file_operations_label, extended_details_label, bottom_actions_label, recycle_bin_label).forEach {
-            it.setTextColor(adjustedPrimaryColor)
-        }
-    }
-
-    private fun setupPurchaseThankYou() {
-        settings_purchase_thank_you_holder.beVisibleIf(config.appRunCount > 10 && !isThankYouInstalled())
-        settings_purchase_thank_you_holder.setOnClickListener {
-            launchPurchaseThankYouIntent()
-        }
-    }
-
-    private fun setupCustomizeColors() {
-        settings_customize_colors_holder.setOnClickListener {
-            startCustomizationActivity()
-        }
-    }
-
-    private fun setupUseEnglish() {
-        settings_use_english_holder.beVisibleIf(config.wasUseEnglishToggled || Locale.getDefault().language != "en")
-        settings_use_english.isChecked = config.useEnglish
-        settings_use_english_holder.setOnClickListener {
-            settings_use_english.toggle()
-            config.useEnglish = settings_use_english.isChecked
-            System.exit(0)
-        }
-    }
-
-    private fun setupAvoidWhatsNew() {
-        settings_avoid_whats_new.isChecked = config.avoidWhatsNew
-        settings_avoid_whats_new_holder.setOnClickListener {
-            settings_avoid_whats_new.toggle()
-            config.avoidWhatsNew = settings_avoid_whats_new.isChecked
-        }
-    }
-
-    private fun setupManageIncludedFolders() {
-        settings_manage_included_folders_holder.setOnClickListener {
-            startActivity(Intent(this, IncludedFoldersActivity::class.java))
-        }
-    }
-
-    private fun setupManageExcludedFolders() {
-        settings_manage_excluded_folders_holder.setOnClickListener {
-            startActivity(Intent(this, ExcludedFoldersActivity::class.java))
-        }
-    }
-
-    private fun setupManageHiddenFolders() {
-        settings_manage_hidden_folders_holder.setOnClickListener {
-            handleHiddenFolderPasswordProtection {
-                startActivity(Intent(this, HiddenFoldersActivity::class.java))
-            }
-        }
-    }
-
-    private fun setupShowHiddenItems() {
-        settings_show_hidden_items.isChecked = config.showHiddenMedia
-        settings_show_hidden_items_holder.setOnClickListener {
-            if (config.showHiddenMedia) {
-                toggleHiddenItems()
-            } else {
-                handleHiddenFolderPasswordProtection {
-                    toggleHiddenItems()
-                }
-            }
-        }
-    }
-
-    private fun toggleHiddenItems() {
-        settings_show_hidden_items.toggle()
-        config.showHiddenMedia = settings_show_hidden_items.isChecked
-    }
-
-    private fun setupDoExtraCheck() {
-        settings_do_extra_check.isChecked = config.doExtraCheck
-        settings_do_extra_check_holder.setOnClickListener {
-            settings_do_extra_check.toggle()
-            config.doExtraCheck = settings_do_extra_check.isChecked
-        }
-    }
-
-    private fun setupAutoplayVideos() {
-        settings_autoplay_videos.isChecked = config.autoplayVideos
-        settings_autoplay_videos_holder.setOnClickListener {
-            settings_autoplay_videos.toggle()
-            config.autoplayVideos = settings_autoplay_videos.isChecked
-        }
-    }
-
-    private fun setupLoopVideos() {
-        settings_loop_videos.isChecked = config.loopVideos
-        settings_loop_videos_holder.setOnClickListener {
-            settings_loop_videos.toggle()
-            config.loopVideos = settings_loop_videos.isChecked
-        }
-    }
-
-    private fun setupAnimateGifs() {
-        settings_animate_gifs.isChecked = config.animateGifs
-        settings_animate_gifs_holder.setOnClickListener {
-            settings_animate_gifs.toggle()
-            config.animateGifs = settings_animate_gifs.isChecked
-        }
-    }
-
-    private fun setupMaxBrightness() {
-        settings_max_brightness.isChecked = config.maxBrightness
-        settings_max_brightness_holder.setOnClickListener {
-            settings_max_brightness.toggle()
-            config.maxBrightness = settings_max_brightness.isChecked
-        }
-    }
-
-    private fun setupCropThumbnails() {
-        settings_crop_thumbnails.isChecked = config.cropThumbnails
-        settings_crop_thumbnails_holder.setOnClickListener {
-            settings_crop_thumbnails.toggle()
-            config.cropThumbnails = settings_crop_thumbnails.isChecked
-        }
-    }
-
-    private fun setupDarkBackground() {
-        settings_black_background.isChecked = config.blackBackground
-        settings_black_background_holder.setOnClickListener {
-            settings_black_background.toggle()
-            config.blackBackground = settings_black_background.isChecked
-        }
-    }
-
-    private fun setupScrollHorizontally() {
-        settings_scroll_horizontally.isChecked = config.scrollHorizontally
-        settings_scroll_horizontally_holder.setOnClickListener {
-            settings_scroll_horizontally.toggle()
-            config.scrollHorizontally = settings_scroll_horizontally.isChecked
-
-            if (config.scrollHorizontally) {
-                config.enablePullToRefresh = false
-                settings_enable_pull_to_refresh.isChecked = false
-            }
-        }
-    }
-
-    private fun setupHideSystemUI() {
-        settings_hide_system_ui.isChecked = config.hideSystemUI
-        settings_hide_system_ui_holder.setOnClickListener {
-            settings_hide_system_ui.toggle()
-            config.hideSystemUI = settings_hide_system_ui.isChecked
-        }
-    }
-
-    private fun setupPasswordProtection() {
-        settings_password_protection.isChecked = config.isPasswordProtectionOn
-        settings_password_protection_holder.setOnClickListener {
-            val tabToShow = if (config.isPasswordProtectionOn) config.protectionType else SHOW_ALL_TABS
-            SecurityDialog(this, config.passwordHash, tabToShow) { hash, type, success ->
-                if (success) {
-                    val hasPasswordProtection = config.isPasswordProtectionOn
-                    settings_password_protection.isChecked = !hasPasswordProtection
-                    config.isPasswordProtectionOn = !hasPasswordProtection
-                    config.passwordHash = if (hasPasswordProtection) "" else hash
-                    config.protectionType = type
-
-                    if (config.isPasswordProtectionOn) {
-                        val confirmationTextId = if (config.protectionType == PROTECTION_FINGERPRINT)
-                            R.string.fingerprint_setup_successfully else R.string.protection_setup_successfully
-                        ConfirmationDialog(this, "", confirmationTextId, R.string.ok, 0) { }
-                    }
-                }
-            }
-        }
-    }
-
-    private fun setupAppPasswordProtection() {
-        settings_app_password_protection.isChecked = config.appPasswordProtectionOn
-        settings_app_password_protection_holder.setOnClickListener {
-            val tabToShow = if (config.appPasswordProtectionOn) config.appProtectionType else SHOW_ALL_TABS
-            SecurityDialog(this, config.appPasswordHash, tabToShow) { hash, type, success ->
-                if (success) {
-                    val hasPasswordProtection = config.appPasswordProtectionOn
-                    settings_app_password_protection.isChecked = !hasPasswordProtection
-                    config.appPasswordProtectionOn = !hasPasswordProtection
-                    config.appPasswordHash = if (hasPasswordProtection) "" else hash
-                    config.appProtectionType = type
-
-                    if (config.appPasswordProtectionOn) {
-                        val confirmationTextId = if (config.appProtectionType == PROTECTION_FINGERPRINT)
-                            R.string.fingerprint_setup_successfully else R.string.protection_setup_successfully
-                        ConfirmationDialog(this, "", confirmationTextId, R.string.ok, 0) { }
-                    }
-                }
-            }
-        }
-    }
-
-    private fun setupDeleteEmptyFolders() {
-        settings_delete_empty_folders.isChecked = config.deleteEmptyFolders
-        settings_delete_empty_folders_holder.setOnClickListener {
-            settings_delete_empty_folders.toggle()
-            config.deleteEmptyFolders = settings_delete_empty_folders.isChecked
-        }
-    }
-
-    private fun setupAllowPhotoGestures() {
-        settings_allow_photo_gestures.isChecked = config.allowPhotoGestures
-        settings_allow_photo_gestures_holder.setOnClickListener {
-            settings_allow_photo_gestures.toggle()
-            config.allowPhotoGestures = settings_allow_photo_gestures.isChecked
-        }
-    }
-
-    private fun setupAllowVideoGestures() {
-        settings_allow_video_gestures.isChecked = config.allowVideoGestures
-        settings_allow_video_gestures_holder.setOnClickListener {
-            settings_allow_video_gestures.toggle()
-            config.allowVideoGestures = settings_allow_video_gestures.isChecked
-        }
-    }
-
-    private fun setupShowMediaCount() {
-        settings_show_media_count.isChecked = config.showMediaCount
-        settings_show_media_count_holder.setOnClickListener {
-            settings_show_media_count.toggle()
-            config.showMediaCount = settings_show_media_count.isChecked
-        }
-    }
-
-    private fun setupKeepLastModified() {
-        settings_keep_last_modified.isChecked = config.keepLastModified
-        settings_keep_last_modified_holder.setOnClickListener {
-            settings_keep_last_modified.toggle()
-            config.keepLastModified = settings_keep_last_modified.isChecked
-        }
-    }
-
-    private fun setupShowInfoBubble() {
-        settings_show_info_bubble.isChecked = config.showInfoBubble
-        settings_show_info_bubble_holder.setOnClickListener {
-            settings_show_info_bubble.toggle()
-            config.showInfoBubble = settings_show_info_bubble.isChecked
-        }
-    }
-
-    private fun setupEnablePullToRefresh() {
-        settings_enable_pull_to_refresh.isChecked = config.enablePullToRefresh
-        settings_enable_pull_to_refresh_holder.setOnClickListener {
-            settings_enable_pull_to_refresh.toggle()
-            config.enablePullToRefresh = settings_enable_pull_to_refresh.isChecked
-        }
-    }
-
-    private fun setupAllowZoomingImages() {
-        settings_allow_zooming_images.isChecked = config.allowZoomingImages
-        settings_allow_zooming_images_holder.setOnClickListener {
-            settings_allow_zooming_images.toggle()
-            config.allowZoomingImages = settings_allow_zooming_images.isChecked
-            settings_one_finger_zoom_holder.beVisibleIf(config.allowZoomingImages)
-        }
-    }
-
-    private fun setupOneFingerZoom() {
-        settings_one_finger_zoom.isChecked = config.oneFingerZoom
-        settings_one_finger_zoom_holder.setOnClickListener {
-            settings_one_finger_zoom.toggle()
-            config.oneFingerZoom = settings_one_finger_zoom.isChecked
-        }
-    }
-
-    private fun setupAllowInstantChange() {
-        settings_allow_instant_change.isChecked = config.allowInstantChange
-        settings_allow_instant_change_holder.setOnClickListener {
-            settings_allow_instant_change.toggle()
-            config.allowInstantChange = settings_allow_instant_change.isChecked
-        }
-    }
-
-    private fun setupShowExtendedDetails() {
-        settings_show_extended_details.isChecked = config.showExtendedDetails
-        settings_show_extended_details_holder.setOnClickListener {
-            settings_show_extended_details.toggle()
-            config.showExtendedDetails = settings_show_extended_details.isChecked
-            settings_manage_extended_details_holder.beVisibleIf(config.showExtendedDetails)
-            settings_hide_extended_details_holder.beVisibleIf(config.showExtendedDetails)
-        }
-    }
-
-    private fun setupHideExtendedDetails() {
-        settings_hide_extended_details_holder.beVisibleIf(config.showExtendedDetails)
-        settings_hide_extended_details.isChecked = config.hideExtendedDetails
-        settings_hide_extended_details_holder.setOnClickListener {
-            settings_hide_extended_details.toggle()
-            config.hideExtendedDetails = settings_hide_extended_details.isChecked
-        }
-    }
-
-    private fun setupManageExtendedDetails() {
-        settings_manage_extended_details_holder.beVisibleIf(config.showExtendedDetails)
-        settings_manage_extended_details_holder.setOnClickListener {
-            ManageExtendedDetailsDialog(this) {
-                if (config.extendedDetails == 0) {
-                    settings_show_extended_details_holder.callOnClick()
-                }
-            }
-        }
-    }
-
-    private fun setupSkipDeleteConfirmation() {
-        settings_skip_delete_confirmation.isChecked = config.skipDeleteConfirmation
-        settings_skip_delete_confirmation_holder.setOnClickListener {
-            settings_skip_delete_confirmation.toggle()
-            config.skipDeleteConfirmation = settings_skip_delete_confirmation.isChecked
-        }
-    }
-
-    private fun setupScreenRotation() {
-        settings_screen_rotation.text = getScreenRotationText()
-        settings_screen_rotation_holder.setOnClickListener {
-            val items = arrayListOf(
-                    RadioItem(ROTATE_BY_SYSTEM_SETTING, res.getString(R.string.screen_rotation_system_setting)),
-                    RadioItem(ROTATE_BY_DEVICE_ROTATION, res.getString(R.string.screen_rotation_device_rotation)),
-                    RadioItem(ROTATE_BY_ASPECT_RATIO, res.getString(R.string.screen_rotation_aspect_ratio)))
-
-            RadioGroupDialog(this@SettingsActivity, items, config.screenRotation) {
-                config.screenRotation = it as Int
-                settings_screen_rotation.text = getScreenRotationText()
-            }
-        }
-    }
-
-    private fun getScreenRotationText() = getString(when (config.screenRotation) {
-        ROTATE_BY_SYSTEM_SETTING -> R.string.screen_rotation_system_setting
-        ROTATE_BY_DEVICE_ROTATION -> R.string.screen_rotation_device_rotation
-        else -> R.string.screen_rotation_aspect_ratio
-    })
-
-    private fun setupBottomActions() {
-        settings_bottom_actions.isChecked = config.bottomActions
-        settings_bottom_actions_holder.setOnClickListener {
-            settings_bottom_actions.toggle()
-            config.bottomActions = settings_bottom_actions.isChecked
-            settings_manage_bottom_actions_holder.beVisibleIf(config.bottomActions)
-        }
-    }
-
-    private fun setupManageBottomActions() {
-        settings_manage_bottom_actions_holder.beVisibleIf(config.bottomActions)
-        settings_manage_bottom_actions_holder.setOnClickListener {
-            ManageBottomActionsDialog(this) {
-                if (config.visibleBottomActions == 0) {
-                    settings_bottom_actions_holder.callOnClick()
-                    config.bottomActions = false
-                    config.visibleBottomActions = DEFAULT_BOTTOM_ACTIONS
-                }
-            }
-        }
-    }
-
-    private fun setupUseRecycleBin() {
-        settings_empty_recycle_bin_holder.beVisibleIf(config.useRecycleBin)
-        settings_show_recycle_bin_holder.beVisibleIf(config.useRecycleBin)
-        settings_use_recycle_bin.isChecked = config.useRecycleBin
-        settings_use_recycle_bin_holder.setOnClickListener {
-            settings_use_recycle_bin.toggle()
-            config.useRecycleBin = settings_use_recycle_bin.isChecked
-            settings_empty_recycle_bin_holder.beVisibleIf(config.useRecycleBin)
-        }
-    }
-
-    private fun setupShowRecycleBin() {
-        settings_show_recycle_bin.isChecked = config.showRecycleBinAtFolders
-        settings_show_recycle_bin_holder.setOnClickListener {
-            settings_show_recycle_bin.toggle()
-            config.showRecycleBinAtFolders = settings_show_recycle_bin.isChecked
-        }
-    }
-
-    private fun setupEmptyRecycleBin() {
-        Thread {
-            mRecycleBinContentSize = galleryDB.MediumDao().getDeletedMedia().sumByLong { it.size }
-            runOnUiThread {
-                settings_empty_recycle_bin_size.text = mRecycleBinContentSize.formatSize()
-            }
-        }.start()
-
-        settings_empty_recycle_bin_holder.setOnClickListener {
-            if (mRecycleBinContentSize == 0L) {
-                toast(R.string.recycle_bin_empty)
-            } else {
-                showRecycleBinEmptyingDialog {
-                    emptyTheRecycleBin()
-                    mRecycleBinContentSize = 0L
-                    settings_empty_recycle_bin_size.text = 0L.formatSize()
-                }
-            }
-        }
-    }
-}

app/src/main/kotlin/com/simplemobiletools/gallery/databases/GalleryDatabase.kt

@@ -1,40 +0,0 @@
-package com.simplemobiletools.gallery.databases
-
-import android.arch.persistence.room.Database
-import android.arch.persistence.room.Room
-import android.arch.persistence.room.RoomDatabase
-import android.content.Context
-import com.simplemobiletools.gallery.interfaces.DirectoryDao
-import com.simplemobiletools.gallery.interfaces.MediumDao
-import com.simplemobiletools.gallery.models.Directory
-import com.simplemobiletools.gallery.models.Medium
-
-@Database(entities = [(Directory::class), (Medium::class)], version = 4)
-abstract class GalleryDatabase : RoomDatabase() {
-
-    abstract fun DirectoryDao(): DirectoryDao
-
-    abstract fun MediumDao(): MediumDao
-
-    companion object {
-        private var db: GalleryDatabase? = null
-
-        fun getInstance(context: Context): GalleryDatabase {
-            if (db == null) {
-                synchronized(GalleryDatabase::class) {
-                    if (db == null) {
-                        db = Room.databaseBuilder(context.applicationContext, GalleryDatabase::class.java, "gallery.db")
-                                .fallbackToDestructiveMigration()
-                                .build()
-                        db!!.openHelper.setWriteAheadLoggingEnabled(true)
-                    }
-                }
-            }
-            return db!!
-        }
-
-        fun destroyInstance() {
-            db = null
-        }
-    }
-}

app/src/main/kotlin/com/simplemobiletools/gallery/dialogs/PickDirectoryDialog.kt

@@ -1,98 +0,0 @@
-package com.simplemobiletools.gallery.dialogs
-
-import android.support.v7.app.AlertDialog
-import android.support.v7.widget.GridLayoutManager
-import com.simplemobiletools.commons.activities.BaseSimpleActivity
-import com.simplemobiletools.commons.dialogs.FilePickerDialog
-import com.simplemobiletools.commons.extensions.beGoneIf
-import com.simplemobiletools.commons.extensions.beVisibleIf
-import com.simplemobiletools.commons.extensions.setupDialogStuff
-import com.simplemobiletools.commons.extensions.toast
-import com.simplemobiletools.commons.views.MyGridLayoutManager
-import com.simplemobiletools.gallery.R
-import com.simplemobiletools.gallery.adapters.DirectoryAdapter
-import com.simplemobiletools.gallery.extensions.addTempFolderIfNeeded
-import com.simplemobiletools.gallery.extensions.config
-import com.simplemobiletools.gallery.extensions.getCachedDirectories
-import com.simplemobiletools.gallery.extensions.getSortedDirectories
-import com.simplemobiletools.gallery.helpers.VIEW_TYPE_GRID
-import com.simplemobiletools.gallery.models.Directory
-import kotlinx.android.synthetic.main.dialog_directory_picker.view.*
-
-class PickDirectoryDialog(val activity: BaseSimpleActivity, val sourcePath: String, val callback: (path: String) -> Unit) {
-    var dialog: AlertDialog
-    var shownDirectories = ArrayList<Directory>()
-    var view = activity.layoutInflater.inflate(R.layout.dialog_directory_picker, null)
-    var isGridViewType = activity.config.viewTypeFolders == VIEW_TYPE_GRID
-
-    init {
-        (view.directories_grid.layoutManager as MyGridLayoutManager).apply {
-            orientation = if (activity.config.scrollHorizontally && isGridViewType) GridLayoutManager.HORIZONTAL else GridLayoutManager.VERTICAL
-            spanCount = if (isGridViewType) activity.config.dirColumnCnt else 1
-        }
-
-        dialog = AlertDialog.Builder(activity)
-                .setPositiveButton(R.string.ok, null)
-                .setNegativeButton(R.string.cancel, null)
-                .setNeutralButton(R.string.other_folder, { dialogInterface, i -> showOtherFolder() })
-                .create().apply {
-                    activity.setupDialogStuff(view, this, R.string.select_destination)
-                }
-
-        activity.getCachedDirectories {
-            if (it.isNotEmpty()) {
-                activity.runOnUiThread {
-                    gotDirectories(activity.addTempFolderIfNeeded(it))
-                }
-            }
-        }
-    }
-
-    private fun showOtherFolder() {
-        val showHidden = activity.config.shouldShowHidden
-        FilePickerDialog(activity, sourcePath, false, showHidden, true) {
-            callback(it)
-        }
-    }
-
-    private fun gotDirectories(newDirs: ArrayList<Directory>) {
-        val dirs = activity.getSortedDirectories(newDirs)
-        if (dirs.hashCode() == shownDirectories.hashCode())
-            return
-
-        shownDirectories = dirs
-        val adapter = DirectoryAdapter(activity, dirs.clone() as ArrayList<Directory>, null, view.directories_grid, true) {
-            if ((it as Directory).path.trimEnd('/') == sourcePath) {
-                activity.toast(R.string.source_and_destination_same)
-                return@DirectoryAdapter
-            } else {
-                callback(it.path)
-                dialog.dismiss()
-            }
-        }
-
-        val scrollHorizontally = activity.config.scrollHorizontally && isGridViewType
-        val sorting = activity.config.directorySorting
-        view.apply {
-            directories_grid.adapter = adapter
-
-            directories_vertical_fastscroller.isHorizontal = false
-            directories_vertical_fastscroller.beGoneIf(scrollHorizontally)
-
-            directories_horizontal_fastscroller.isHorizontal = true
-            directories_horizontal_fastscroller.beVisibleIf(scrollHorizontally)
-
-            if (scrollHorizontally) {
-                directories_horizontal_fastscroller.allowBubbleDisplay = activity.config.showInfoBubble
-                directories_horizontal_fastscroller.setViews(directories_grid) {
-                    directories_horizontal_fastscroller.updateBubbleText(dirs[it].getBubbleText(sorting))
-                }
-            } else {
-                directories_vertical_fastscroller.allowBubbleDisplay = activity.config.showInfoBubble
-                directories_vertical_fastscroller.setViews(directories_grid) {
-                    directories_vertical_fastscroller.updateBubbleText(dirs[it].getBubbleText(sorting))
-                }
-            }
-        }
-    }
-}

app/src/main/kotlin/com/simplemobiletools/gallery/dialogs/ResizeDialog.kt

@@ -1,97 +0,0 @@
-package com.simplemobiletools.gallery.dialogs
-
-import android.graphics.Point
-import android.support.v7.app.AlertDialog
-import android.text.Editable
-import android.text.TextWatcher
-import android.widget.EditText
-import com.simplemobiletools.commons.activities.BaseSimpleActivity
-import com.simplemobiletools.commons.extensions.setupDialogStuff
-import com.simplemobiletools.commons.extensions.showKeyboard
-import com.simplemobiletools.commons.extensions.toast
-import com.simplemobiletools.commons.extensions.value
-import com.simplemobiletools.gallery.R
-import kotlinx.android.synthetic.main.resize_image.view.*
-
-class ResizeDialog(val activity: BaseSimpleActivity, val size: Point, val callback: (newSize: Point) -> Unit) {
-    init {
-        val view = activity.layoutInflater.inflate(R.layout.resize_image, null)
-        val widthView = view.image_width
-        val heightView = view.image_height
-
-        widthView.setText(size.x.toString())
-        heightView.setText(size.y.toString())
-
-        val ratio = size.x / size.y.toFloat()
-
-        widthView.addTextChangedListener(object : TextWatcher {
-            override fun afterTextChanged(s: Editable?) {
-                if (widthView.hasFocus()) {
-                    var width = getViewValue(widthView)
-                    if (width > size.x) {
-                        widthView.setText(size.x.toString())
-                        width = size.x
-                    }
-
-                    if (view.keep_aspect_ratio.isChecked) {
-                        heightView.setText((width / ratio).toInt().toString())
-                    }
-                }
-            }
-
-            override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
-            }
-
-            override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
-            }
-        })
-
-        heightView.addTextChangedListener(object : TextWatcher {
-            override fun afterTextChanged(s: Editable?) {
-                if (heightView.hasFocus()) {
-                    var height = getViewValue(heightView)
-                    if (height > size.y) {
-                        heightView.setText(size.y.toString())
-                        height = size.y
-                    }
-
-                    if (view.keep_aspect_ratio.isChecked) {
-                        widthView.setText((height * ratio).toInt().toString())
-                    }
-                }
-            }
-
-            override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
-            }
-
-            override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
-            }
-        })
-
-        AlertDialog.Builder(activity)
-                .setPositiveButton(R.string.ok, null)
-                .setNegativeButton(R.string.cancel, null)
-                .create().apply {
-                    activity.setupDialogStuff(view, this, R.string.resize_and_save) {
-                        showKeyboard(view.image_width)
-                        getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener {
-                            val width = getViewValue(widthView)
-                            val height = getViewValue(heightView)
-                            if (width <= 0 || height <= 0) {
-                                activity.toast(R.string.invalid_values)
-                                return@setOnClickListener
-                            }
-
-                            val newSize = Point(getViewValue(widthView), getViewValue(heightView))
-                            callback(newSize)
-                            dismiss()
-                        }
-                    }
-                }
-    }
-
-    fun getViewValue(view: EditText): Int {
-        val textValue = view.value
-        return if (textValue.isEmpty()) 0 else textValue.toInt()
-    }
-}

app/src/main/kotlin/com/simplemobiletools/gallery/extensions/Activity.kt

@@ -1,278 +0,0 @@
-package com.simplemobiletools.gallery.extensions
-
-import android.app.Activity
-import android.content.Intent
-import android.provider.MediaStore
-import android.support.v7.app.AppCompatActivity
-import android.view.View
-import com.simplemobiletools.commons.activities.BaseSimpleActivity
-import com.simplemobiletools.commons.dialogs.ConfirmationDialog
-import com.simplemobiletools.commons.extensions.*
-import com.simplemobiletools.commons.helpers.*
-import com.simplemobiletools.commons.models.FAQItem
-import com.simplemobiletools.commons.models.FileDirItem
-import com.simplemobiletools.gallery.BuildConfig
-import com.simplemobiletools.gallery.R
-import com.simplemobiletools.gallery.activities.SimpleActivity
-import com.simplemobiletools.gallery.dialogs.PickDirectoryDialog
-import com.simplemobiletools.gallery.helpers.NOMEDIA
-import com.simplemobiletools.gallery.interfaces.MediumDao
-import java.io.File
-import java.io.InputStream
-import java.io.OutputStream
-import java.util.*
-
-fun Activity.sharePath(path: String) {
-    sharePathIntent(path, BuildConfig.APPLICATION_ID)
-}
-
-fun Activity.sharePaths(paths: ArrayList<String>) {
-    sharePathsIntent(paths, BuildConfig.APPLICATION_ID)
-}
-
-fun Activity.shareMediumPath(path: String) {
-    sharePath(path)
-}
-
-fun Activity.shareMediaPaths(paths: ArrayList<String>) {
-    sharePaths(paths)
-}
-
-fun Activity.setAs(path: String) {
-    setAsIntent(path, BuildConfig.APPLICATION_ID)
-}
-
-fun Activity.openPath(path: String, forceChooser: Boolean) {
-    openPathIntent(path, forceChooser, BuildConfig.APPLICATION_ID)
-}
-
-fun Activity.openEditor(path: String) {
-    openEditorIntent(path, BuildConfig.APPLICATION_ID)
-}
-
-fun Activity.launchCamera() {
-    val intent = Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA)
-    if (intent.resolveActivity(packageManager) != null) {
-        startActivity(intent)
-    } else {
-        toast(R.string.no_app_found)
-    }
-}
-
-fun SimpleActivity.launchAbout() {
-    val licenses = LICENSE_GLIDE or LICENSE_CROPPER or LICENSE_MULTISELECT or LICENSE_RTL or LICENSE_SUBSAMPLING or LICENSE_PATTERN or
-            LICENSE_REPRINT or LICENSE_GIF_DRAWABLE or LICENSE_PHOTOVIEW or LICENSE_PICASSO or LICENSE_EXOPLAYER or LICENSE_PANORAMA_VIEW or LICENSE_SANSELAN or LICENSE_FILTERS
-
-    val faqItems = arrayListOf(
-            FAQItem(R.string.faq_5_title_commons, R.string.faq_5_text_commons),
-            FAQItem(R.string.faq_1_title, R.string.faq_1_text),
-            FAQItem(R.string.faq_2_title, R.string.faq_2_text),
-            FAQItem(R.string.faq_3_title, R.string.faq_3_text),
-            FAQItem(R.string.faq_4_title, R.string.faq_4_text),
-            FAQItem(R.string.faq_5_title, R.string.faq_5_text),
-            FAQItem(R.string.faq_6_title, R.string.faq_6_text),
-            FAQItem(R.string.faq_7_title, R.string.faq_7_text),
-            FAQItem(R.string.faq_8_title, R.string.faq_8_text),
-            FAQItem(R.string.faq_10_title, R.string.faq_10_text),
-            FAQItem(R.string.faq_11_title, R.string.faq_11_text),
-            FAQItem(R.string.faq_12_title, R.string.faq_12_text),
-            FAQItem(R.string.faq_2_title_commons, R.string.faq_2_text_commons))
-
-    startAboutActivity(R.string.app_name, licenses, BuildConfig.VERSION_NAME, faqItems, true)
-}
-
-fun AppCompatActivity.showSystemUI(toggleActionBarVisibility: Boolean) {
-    if (toggleActionBarVisibility) {
-        supportActionBar?.show()
-    }
-
-    window.decorView.systemUiVisibility = View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
-            View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION or
-            View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
-}
-
-fun AppCompatActivity.hideSystemUI(toggleActionBarVisibility: Boolean) {
-    if (toggleActionBarVisibility) {
-        supportActionBar?.hide()
-    }
-
-    window.decorView.systemUiVisibility = View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
-            View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION or
-            View.SYSTEM_UI_FLAG_HIDE_NAVIGATION or
-            View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN or
-            View.SYSTEM_UI_FLAG_LOW_PROFILE or
-            View.SYSTEM_UI_FLAG_FULLSCREEN or
-            View.SYSTEM_UI_FLAG_IMMERSIVE
-}
-
-fun BaseSimpleActivity.addNoMedia(path: String, callback: () -> Unit) {
-    val file = File(path, NOMEDIA)
-    if (file.exists()) {
-        callback()
-        return
-    }
-
-    if (needsStupidWritePermissions(path)) {
-        handleSAFDialog(file.absolutePath) {
-            val fileDocument = getDocumentFile(path)
-            if (fileDocument?.exists() == true && fileDocument.isDirectory) {
-                fileDocument.createFile("", NOMEDIA)
-                applicationContext.scanFileRecursively(file) {
-                    callback()
-                }
-            } else {
-                toast(R.string.unknown_error_occurred)
-                callback()
-            }
-        }
-    } else {
-        try {
-            file.createNewFile()
-            applicationContext.scanFileRecursively(file) {
-                callback()
-            }
-        } catch (e: Exception) {
-            showErrorToast(e)
-            callback()
-        }
-    }
-}
-
-fun BaseSimpleActivity.removeNoMedia(path: String, callback: (() -> Unit)? = null) {
-    val file = File(path, NOMEDIA)
-    if (!file.exists()) {
-        callback?.invoke()
-        return
-    }
-
-    tryDeleteFileDirItem(file.toFileDirItem(applicationContext), false, false) {
-        callback?.invoke()
-    }
-}
-
-fun BaseSimpleActivity.toggleFileVisibility(oldPath: String, hide: Boolean, callback: ((newPath: String) -> Unit)? = null) {
-    val path = oldPath.getParentPath()
-    var filename = oldPath.getFilenameFromPath()
-    if ((hide && filename.startsWith('.')) || (!hide && !filename.startsWith('.'))) {
-        callback?.invoke(oldPath)
-        return
-    }
-
-    filename = if (hide) {
-        ".${filename.trimStart('.')}"
-    } else {
-        filename.substring(1, filename.length)
-    }
-
-    val newPath = "$path/$filename"
-    renameFile(oldPath, newPath) {
-        callback?.invoke(newPath)
-        Thread {
-            updateDBMediaPath(oldPath, newPath)
-        }.start()
-    }
-}
-
-fun BaseSimpleActivity.tryCopyMoveFilesTo(fileDirItems: ArrayList<FileDirItem>, isCopyOperation: Boolean, callback: (destinationPath: String) -> Unit) {
-    if (fileDirItems.isEmpty()) {
-        toast(R.string.unknown_error_occurred)
-        return
-    }
-
-    val source = fileDirItems[0].getParentPath()
-    PickDirectoryDialog(this, source) {
-        copyMoveFilesTo(fileDirItems, source.trimEnd('/'), it, isCopyOperation, true, config.shouldShowHidden, callback)
-    }
-}
-
-fun BaseSimpleActivity.tryDeleteFileDirItem(fileDirItem: FileDirItem, allowDeleteFolder: Boolean = false, deleteFromDatabase: Boolean,
-                                            callback: ((wasSuccess: Boolean) -> Unit)? = null) {
-    deleteFile(fileDirItem, allowDeleteFolder) {
-        if (deleteFromDatabase) {
-            Thread {
-                galleryDB.MediumDao().deleteMediumPath(fileDirItem.path)
-                runOnUiThread {
-                    callback?.invoke(it)
-                }
-            }.start()
-        } else {
-            callback?.invoke(it)
-        }
-    }
-}
-
-fun BaseSimpleActivity.movePathsInRecycleBin(paths: ArrayList<String>, mediumDao: MediumDao = galleryDB.MediumDao(), callback: ((wasSuccess: Boolean) -> Unit)?) {
-    Thread {
-        var pathsCnt = paths.size
-        paths.forEach {
-            val file = File(it)
-            val internalFile = File(filesDir.absolutePath, it)
-            try {
-                if (file.copyRecursively(internalFile, true)) {
-                    mediumDao.updateDeleted(it, System.currentTimeMillis())
-                    pathsCnt--
-                }
-            } catch (ignored: Exception) {
-            }
-        }
-        callback?.invoke(pathsCnt == 0)
-    }.start()
-}
-
-fun BaseSimpleActivity.restoreRecycleBinPath(path: String, callback: () -> Unit) {
-    restoreRecycleBinPaths(arrayListOf(path), galleryDB.MediumDao(), callback)
-}
-
-fun BaseSimpleActivity.restoreRecycleBinPaths(paths: ArrayList<String>, mediumDao: MediumDao = galleryDB.MediumDao(), callback: () -> Unit) {
-    Thread {
-        paths.forEach {
-            val source = it
-            val destination = it.removePrefix(filesDir.absolutePath)
-
-            var inputStream: InputStream? = null
-            var out: OutputStream? = null
-            try {
-                out = getFileOutputStreamSync(destination, source.getMimeType())
-                inputStream = getFileInputStreamSync(source)!!
-                inputStream.copyTo(out!!)
-                if (File(source).length() == File(destination).length()) {
-                    mediumDao.updateDeleted(destination, 0)
-                }
-            } catch (e: Exception) {
-                showErrorToast(e)
-            } finally {
-                inputStream?.close()
-                out?.close()
-            }
-        }
-
-        runOnUiThread {
-            callback()
-        }
-    }.start()
-}
-
-fun BaseSimpleActivity.emptyTheRecycleBin(callback: (() -> Unit)? = null) {
-    Thread {
-        filesDir.deleteRecursively()
-        galleryDB.MediumDao().clearRecycleBin()
-        galleryDB.DirectoryDao().deleteRecycleBin()
-        toast(R.string.recycle_bin_emptied)
-        callback?.invoke()
-    }.start()
-}
-
-fun BaseSimpleActivity.emptyAndDisableTheRecycleBin(callback: () -> Unit) {
-    Thread {
-        emptyTheRecycleBin {
-            config.useRecycleBin = false
-            callback()
-        }
-    }.start()
-}
-
-fun BaseSimpleActivity.showRecycleBinEmptyingDialog(callback: () -> Unit) {
-    ConfirmationDialog(this, "", R.string.empty_recycle_bin_confirmation, R.string.yes, R.string.no) {
-        callback()
-    }
-}

app/src/main/kotlin/com/simplemobiletools/gallery/fragments/PhotoFragment.kt

@@ -1,530 +0,0 @@
-package com.simplemobiletools.gallery.fragments
-
-import android.annotation.SuppressLint
-import android.content.Intent
-import android.content.res.Configuration
-import android.graphics.Bitmap
-import android.graphics.BitmapFactory
-import android.graphics.Color
-import android.graphics.Matrix
-import android.graphics.drawable.ColorDrawable
-import android.graphics.drawable.PictureDrawable
-import android.media.ExifInterface.*
-import android.net.Uri
-import android.os.Bundle
-import android.os.Handler
-import android.util.DisplayMetrics
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import com.bumptech.glide.Glide
-import com.bumptech.glide.load.DataSource
-import com.bumptech.glide.load.DecodeFormat
-import com.bumptech.glide.load.engine.DiskCacheStrategy
-import com.bumptech.glide.load.engine.GlideException
-import com.bumptech.glide.request.RequestListener
-import com.bumptech.glide.request.RequestOptions
-import com.davemorrissey.labs.subscaleview.ImageSource
-import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
-import com.simplemobiletools.commons.extensions.*
-import com.simplemobiletools.commons.helpers.OTG_PATH
-import com.simplemobiletools.commons.helpers.isJellyBean1Plus
-import com.simplemobiletools.commons.helpers.isLollipopPlus
-import com.simplemobiletools.gallery.R
-import com.simplemobiletools.gallery.activities.PanoramaActivity
-import com.simplemobiletools.gallery.activities.PhotoActivity
-import com.simplemobiletools.gallery.activities.ViewPagerActivity
-import com.simplemobiletools.gallery.extensions.*
-import com.simplemobiletools.gallery.helpers.*
-import com.simplemobiletools.gallery.models.Medium
-import com.simplemobiletools.gallery.svg.SvgSoftwareLayerSetter
-import com.squareup.picasso.Callback
-import com.squareup.picasso.Picasso
-import it.sephiroth.android.library.exif2.ExifInterface
-import kotlinx.android.synthetic.main.pager_photo_item.view.*
-import org.apache.sanselan.common.byteSources.ByteSourceInputStream
-import org.apache.sanselan.formats.jpeg.JpegImageParser
-import pl.droidsonroids.gif.GifDrawable
-import java.io.File
-import java.io.FileOutputStream
-
-class PhotoFragment : ViewPagerFragment() {
-    private val DEFAULT_DOUBLE_TAP_ZOOM = 2f
-    private val ZOOMABLE_VIEW_LOAD_DELAY = 300L
-
-    private var isFragmentVisible = false
-    private var isFullscreen = false
-    private var wasInit = false
-    private var isPanorama = false
-    private var imageOrientation = -1
-    private var gifDrawable: GifDrawable? = null
-    private var loadZoomableViewHandler = Handler()
-
-    private var storedShowExtendedDetails = false
-    private var storedHideExtendedDetails = false
-    private var storedExtendedDetails = 0
-
-    lateinit var view: ViewGroup
-    lateinit var medium: Medium
-
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
-        view = (inflater.inflate(R.layout.pager_photo_item, container, false) as ViewGroup).apply {
-            subsampling_view.setOnClickListener { photoClicked() }
-            photo_view.setOnClickListener { photoClicked() }
-            instant_prev_item.setOnClickListener { listener?.goToPrevItem() }
-            instant_next_item.setOnClickListener { listener?.goToNextItem() }
-            panorama_outline.setOnClickListener { openPanorama() }
-
-            instant_prev_item.parentView = container
-            instant_next_item.parentView = container
-
-            photo_brightness_controller.initialize(activity!!, slide_info, true, container) { x, y ->
-                view.apply {
-                    if (subsampling_view.isVisible()) {
-                        subsampling_view.sendFakeClick(x, y)
-                    } else {
-                        photo_view.sendFakeClick(x, y)
-                    }
-                }
-            }
-        }
-
-        if (ViewPagerActivity.screenWidth == 0 || ViewPagerActivity.screenHeight == 0) {
-            measureScreen()
-        }
-
-        storeStateVariables()
-        if (!isFragmentVisible && activity is PhotoActivity) {
-            isFragmentVisible = true
-        }
-
-        medium = arguments!!.getSerializable(MEDIUM) as Medium
-        if (medium.path.startsWith("content://") && !medium.path.startsWith("content://mms/")) {
-            val originalPath = medium.path
-            medium.path = context!!.getRealPathFromURI(Uri.parse(originalPath)) ?: medium.path
-
-            if (medium.path.isEmpty()) {
-                var out: FileOutputStream? = null
-                try {
-                    var inputStream = context!!.contentResolver.openInputStream(Uri.parse(originalPath))
-                    val exif = ExifInterface()
-                    exif.readExif(inputStream, ExifInterface.Options.OPTION_ALL)
-                    val tag = exif.getTag(ExifInterface.TAG_ORIENTATION)
-                    val orientation = tag?.getValueAsInt(-1) ?: -1
-                    inputStream = context!!.contentResolver.openInputStream(Uri.parse(originalPath))
-                    val original = BitmapFactory.decodeStream(inputStream)
-                    val rotated = rotateViaMatrix(original, orientation)
-                    exif.setTagValue(ExifInterface.TAG_ORIENTATION, 1)
-                    exif.removeCompressedThumbnail()
-
-                    val file = File(context!!.externalCacheDir, Uri.parse(originalPath).lastPathSegment)
-                    out = FileOutputStream(file)
-                    rotated.compress(Bitmap.CompressFormat.JPEG, 100, out)
-                    medium.path = file.absolutePath
-                } catch (e: Exception) {
-                    activity!!.toast(R.string.unknown_error_occurred)
-                    return view
-                } finally {
-                    out?.close()
-                }
-            }
-        }
-
-        isFullscreen = activity!!.window.decorView.systemUiVisibility and View.SYSTEM_UI_FLAG_FULLSCREEN == View.SYSTEM_UI_FLAG_FULLSCREEN
-        loadImage()
-        initExtendedDetails()
-        wasInit = true
-        checkIfPanorama()
-
-        return view
-    }
-
-    override fun onPause() {
-        super.onPause()
-        storeStateVariables()
-    }
-
-    override fun onResume() {
-        super.onResume()
-        if (wasInit && (context!!.config.showExtendedDetails != storedShowExtendedDetails || context!!.config.extendedDetails != storedExtendedDetails)) {
-            initExtendedDetails()
-        }
-
-        val allowPhotoGestures = context!!.config.allowPhotoGestures
-        val allowInstantChange = context!!.config.allowInstantChange
-
-        view.apply {
-            photo_brightness_controller.beVisibleIf(allowPhotoGestures)
-            instant_prev_item.beVisibleIf(allowInstantChange)
-            instant_next_item.beVisibleIf(allowInstantChange)
-            photo_view.setAllowFingerDragZoom(activity!!.config.oneFingerZoom)
-        }
-
-        storeStateVariables()
-    }
-
-    override fun setMenuVisibility(menuVisible: Boolean) {
-        super.setMenuVisibility(menuVisible)
-        isFragmentVisible = menuVisible
-        if (wasInit) {
-            if (medium.isGIF()) {
-                gifFragmentVisibilityChanged(menuVisible)
-            } else {
-                photoFragmentVisibilityChanged(menuVisible)
-            }
-        }
-    }
-
-    private fun storeStateVariables() {
-        context!!.config.apply {
-            storedShowExtendedDetails = showExtendedDetails
-            storedHideExtendedDetails = hideExtendedDetails
-            storedExtendedDetails = extendedDetails
-        }
-    }
-
-    @SuppressLint("NewApi")
-    private fun measureScreen() {
-        val metrics = DisplayMetrics()
-        if (isJellyBean1Plus()) {
-            activity!!.windowManager.defaultDisplay.getRealMetrics(metrics)
-            ViewPagerActivity.screenWidth = metrics.widthPixels
-            ViewPagerActivity.screenHeight = metrics.heightPixels
-        } else {
-            activity!!.windowManager.defaultDisplay.getMetrics(metrics)
-            ViewPagerActivity.screenWidth = metrics.widthPixels
-            ViewPagerActivity.screenHeight = metrics.heightPixels
-        }
-    }
-
-    private fun gifFragmentVisibilityChanged(isVisible: Boolean) {
-        if (isVisible) {
-            gifDrawable?.start()
-        } else {
-            gifDrawable?.stop()
-        }
-    }
-
-    private fun photoFragmentVisibilityChanged(isVisible: Boolean) {
-        if (isVisible) {
-            scheduleZoomableView()
-        } else {
-            view.subsampling_view.recycle()
-            view.subsampling_view.beGone()
-            loadZoomableViewHandler.removeCallbacksAndMessages(null)
-        }
-    }
-
-    private fun degreesForRotation(orientation: Int) = when (orientation) {
-        ORIENTATION_ROTATE_270 -> 270
-        ORIENTATION_ROTATE_180 -> 180
-        ORIENTATION_ROTATE_90 -> 90
-        else -> 0
-    }
-
-    private fun rotateViaMatrix(original: Bitmap, orientation: Int): Bitmap {
-        val degrees = degreesForRotation(orientation).toFloat()
-        return if (degrees == 0f) {
-            original
-        } else {
-            val matrix = Matrix()
-            matrix.setRotate(degrees)
-            Bitmap.createBitmap(original, 0, 0, original.width, original.height, matrix, true)
-        }
-    }
-
-    private fun loadImage() {
-        imageOrientation = getImageOrientation()
-        when {
-            medium.isGIF() -> loadGif()
-            medium.isSVG() -> loadSVG()
-            else -> loadBitmap()
-        }
-    }
-
-    private fun loadGif() {
-        try {
-            val pathToLoad = getPathToLoad(medium)
-            gifDrawable = if (pathToLoad.startsWith("content://") || pathToLoad.startsWith("file://")) {
-                GifDrawable(context!!.contentResolver, Uri.parse(pathToLoad))
-            } else {
-                GifDrawable(pathToLoad)
-            }
-
-            if (!isFragmentVisible) {
-                gifDrawable!!.stop()
-            }
-
-            view.photo_view.setImageDrawable(gifDrawable)
-        } catch (e: Exception) {
-            gifDrawable = null
-            loadBitmap()
-        } catch (e: OutOfMemoryError) {
-            gifDrawable = null
-            loadBitmap()
-        }
-    }
-
-    private fun loadSVG() {
-        Glide.with(this)
-                .`as`(PictureDrawable::class.java)
-                .listener(SvgSoftwareLayerSetter())
-                .load(medium.path)
-                .into(view.photo_view)
-    }
-
-    private fun loadBitmap(degrees: Int = 0) {
-        var pathToLoad = if (medium.path.startsWith("content://")) medium.path else "file://${medium.path}"
-        pathToLoad = pathToLoad.replace("%", "%25").replace("#", "%23")
-
-        try {
-            val picasso = Picasso.get()
-                    .load(pathToLoad)
-                    .centerInside()
-                    .resize(ViewPagerActivity.screenWidth, ViewPagerActivity.screenHeight)
-
-            if (degrees != 0) {
-                picasso.rotate(degrees.toFloat())
-            }
-
-            picasso.into(view.photo_view, object : Callback {
-                override fun onSuccess() {
-                    view.photo_view.isZoomable = degrees != 0 || context?.config?.allowZoomingImages == false
-                    if (isFragmentVisible && degrees == 0) {
-                        scheduleZoomableView()
-                    }
-                }
-
-                override fun onError(e: Exception) {
-                    if (context != null) {
-                        tryLoadingWithGlide()
-                    }
-                }
-            })
-        } catch (ignored: Exception) {
-        }
-    }
-
-    private fun tryLoadingWithGlide() {
-        var targetWidth = if (ViewPagerActivity.screenWidth == 0) com.bumptech.glide.request.target.Target.SIZE_ORIGINAL else ViewPagerActivity.screenWidth
-        var targetHeight = if (ViewPagerActivity.screenHeight == 0) com.bumptech.glide.request.target.Target.SIZE_ORIGINAL else ViewPagerActivity.screenHeight
-
-        if (imageOrientation == ORIENTATION_ROTATE_90) {
-            targetWidth = targetHeight
-            targetHeight = com.bumptech.glide.request.target.Target.SIZE_ORIGINAL
-        }
-
-        val options = RequestOptions()
-                .signature(medium.path.getFileSignature())
-                .format(DecodeFormat.PREFER_ARGB_8888)
-                .diskCacheStrategy(DiskCacheStrategy.RESOURCE)
-                .override(targetWidth, targetHeight)
-
-        Glide.with(context!!)
-                .asBitmap()
-                .load(getPathToLoad(medium))
-                .apply(options)
-                .listener(object : RequestListener<Bitmap> {
-                    override fun onLoadFailed(e: GlideException?, model: Any?, target: com.bumptech.glide.request.target.Target<Bitmap>?, isFirstResource: Boolean) = false
-
-                    override fun onResourceReady(resource: Bitmap?, model: Any?, target: com.bumptech.glide.request.target.Target<Bitmap>?, dataSource: DataSource?, isFirstResource: Boolean): Boolean {
-                        if (isFragmentVisible) {
-                            scheduleZoomableView()
-                        }
-                        return false
-                    }
-                }).into(view.photo_view)
-    }
-
-    private fun openPanorama() {
-        Intent(context, PanoramaActivity::class.java).apply {
-            putExtra(PATH, medium.path)
-            startActivity(this)
-        }
-    }
-
-    private fun scheduleZoomableView() {
-        loadZoomableViewHandler.removeCallbacksAndMessages(null)
-        loadZoomableViewHandler.postDelayed({
-            if (isFragmentVisible && context?.config?.allowZoomingImages == true && medium.isImage() && view.subsampling_view.isGone()) {
-                addZoomableView()
-            }
-        }, ZOOMABLE_VIEW_LOAD_DELAY)
-    }
-
-    private fun addZoomableView() {
-        val rotation = degreesForRotation(imageOrientation)
-
-        view.subsampling_view.apply {
-            setMinimumTileDpi(getMinTileDpi())
-            background = ColorDrawable(Color.TRANSPARENT)
-            setBitmapDecoderFactory { PicassoDecoder(medium.path, Picasso.get(), rotation) }
-            setRegionDecoderFactory { PicassoRegionDecoder() }
-            maxScale = 10f
-            beVisible()
-            isQuickScaleEnabled = context.config.oneFingerZoom
-            setResetScaleOnSizeChange(context.config.screenRotation != ROTATE_BY_ASPECT_RATIO)
-            setImage(ImageSource.uri(getPathToLoad(medium)))
-            orientation = rotation
-            setEagerLoadingEnabled(false)
-            setOnImageEventListener(object : SubsamplingScaleImageView.OnImageEventListener {
-                override fun onImageLoaded() {
-                }
-
-                override fun onReady() {
-                    background = ColorDrawable(if (context.config.blackBackground) Color.BLACK else context.config.backgroundColor)
-                    val useWidth = if (imageOrientation == ORIENTATION_ROTATE_90 || imageOrientation == ORIENTATION_ROTATE_270) sHeight else sWidth
-                    val useHeight = if (imageOrientation == ORIENTATION_ROTATE_90 || imageOrientation == ORIENTATION_ROTATE_270) sWidth else sHeight
-                    setDoubleTapZoomScale(getDoubleTapZoomScale(useWidth, useHeight))
-                }
-
-                override fun onTileLoadError(e: Exception?) {
-                }
-
-                override fun onPreviewReleased() {
-                }
-
-                override fun onImageLoadError(e: Exception) {
-                    view.photo_view.isZoomable = true
-                    background = ColorDrawable(Color.TRANSPARENT)
-                    beGone()
-                }
-
-                override fun onPreviewLoadError(e: Exception?) {
-                    background = ColorDrawable(Color.TRANSPARENT)
-                    beGone()
-                }
-            })
-        }
-    }
-
-    private fun getMinTileDpi(): Int {
-        val metrics = resources.displayMetrics
-        val averageDpi = (metrics.xdpi + metrics.ydpi) / 2
-        return when {
-            averageDpi > 400 -> 320
-            averageDpi > 300 -> 240
-            else -> 160
-        }
-    }
-
-    private fun checkIfPanorama() {
-        isPanorama = try {
-            val inputStream = if (medium.path.startsWith("content:/")) context!!.contentResolver.openInputStream(Uri.parse(medium.path)) else File(medium.path).inputStream()
-            val imageParser = JpegImageParser().getXmpXml(ByteSourceInputStream(inputStream, medium.name), HashMap<String, Any>())
-            imageParser.contains("GPano:UsePanoramaViewer=\"True\"", true) || imageParser.contains("<GPano:UsePanoramaViewer>True</GPano:UsePanoramaViewer>", true)
-        } catch (e: Exception) {
-            false
-        } catch (e: OutOfMemoryError) {
-            false
-        }
-
-        view.panorama_outline.beVisibleIf(isPanorama && isLollipopPlus())
-    }
-
-    private fun getImageOrientation(): Int {
-        val defaultOrientation = -1
-        var orient = defaultOrientation
-
-        try {
-            val pathToLoad = getPathToLoad(medium)
-            val exif = android.media.ExifInterface(pathToLoad)
-            orient = exif.getAttributeInt(android.media.ExifInterface.TAG_ORIENTATION, defaultOrientation)
-
-            if (orient == defaultOrientation || medium.path.startsWith(OTG_PATH)) {
-                val uri = if (pathToLoad.startsWith("content:/")) Uri.parse(pathToLoad) else Uri.fromFile(File(pathToLoad))
-                val inputStream = context!!.contentResolver.openInputStream(uri)
-                val exif2 = ExifInterface()
-                exif2.readExif(inputStream, ExifInterface.Options.OPTION_ALL)
-                orient = exif2.getTag(ExifInterface.TAG_ORIENTATION)?.getValueAsInt(defaultOrientation) ?: defaultOrientation
-            }
-        } catch (ignored: Exception) {
-        } catch (ignored: OutOfMemoryError) {
-        }
-        return orient
-    }
-
-    private fun getDoubleTapZoomScale(width: Int, height: Int): Float {
-        val bitmapAspectRatio = height / width.toFloat()
-        val screenAspectRatio = ViewPagerActivity.screenHeight / ViewPagerActivity.screenWidth.toFloat()
-
-        return if (context == null || bitmapAspectRatio == screenAspectRatio) {
-            DEFAULT_DOUBLE_TAP_ZOOM
-        } else if (context!!.portrait && bitmapAspectRatio <= screenAspectRatio) {
-            ViewPagerActivity.screenHeight / height.toFloat()
-        } else if (context!!.portrait && bitmapAspectRatio > screenAspectRatio) {
-            ViewPagerActivity.screenWidth / width.toFloat()
-        } else if (!context!!.portrait && bitmapAspectRatio >= screenAspectRatio) {
-            ViewPagerActivity.screenWidth / width.toFloat()
-        } else if (!context!!.portrait && bitmapAspectRatio < screenAspectRatio) {
-            ViewPagerActivity.screenHeight / height.toFloat()
-        } else {
-            DEFAULT_DOUBLE_TAP_ZOOM
-        }
-    }
-
-    fun rotateImageViewBy(degrees: Int) {
-        loadZoomableViewHandler.removeCallbacksAndMessages(null)
-        view.subsampling_view.beGone()
-        loadBitmap(degrees)
-    }
-
-    private fun initExtendedDetails() {
-        if (context!!.config.showExtendedDetails) {
-            view.photo_details.apply {
-                beInvisible()   // make it invisible so we can measure it, but not show yet
-                text = getMediumExtendedDetails(medium)
-                onGlobalLayout {
-                    if (isAdded) {
-                        val realY = getExtendedDetailsY(height)
-                        if (realY > 0) {
-                            y = realY
-                            beVisibleIf(text.isNotEmpty())
-                            alpha = if (!context!!.config.hideExtendedDetails || !isFullscreen) 1f else 0f
-                        }
-                    }
-                }
-            }
-        } else {
-            view.photo_details.beGone()
-        }
-    }
-
-    override fun onDestroyView() {
-        super.onDestroyView()
-        if (activity?.isActivityDestroyed() == false) {
-            view.subsampling_view.recycle()
-        }
-        loadZoomableViewHandler.removeCallbacksAndMessages(null)
-    }
-
-    override fun onConfigurationChanged(newConfig: Configuration) {
-        super.onConfigurationChanged(newConfig)
-        loadImage()
-        initExtendedDetails()
-    }
-
-    private fun photoClicked() {
-        listener?.fragmentClicked()
-    }
-
-    override fun fullscreenToggled(isFullscreen: Boolean) {
-        this.isFullscreen = isFullscreen
-        view.photo_details.apply {
-            if (storedShowExtendedDetails && isVisible()) {
-                animate().y(getExtendedDetailsY(height))
-
-                if (storedHideExtendedDetails) {
-                    animate().alpha(if (isFullscreen) 0f else 1f).start()
-                }
-            }
-        }
-    }
-
-    private fun getExtendedDetailsY(height: Int): Float {
-        val smallMargin = resources.getDimension(R.dimen.small_margin)
-        val fullscreenOffset = context!!.navigationBarHeight.toFloat() - smallMargin
-        val actionsHeight = if (context!!.config.bottomActions && !isFullscreen) resources.getDimension(R.dimen.bottom_actions_height) else 0f
-        return context!!.usableScreenSize.y - height - actionsHeight + if (isFullscreen) fullscreenOffset else -smallMargin
-    }
-}

app/src/main/kotlin/com/simplemobiletools/gallery/fragments/ViewPagerFragment.kt

@@ -1,71 +0,0 @@
-package com.simplemobiletools.gallery.fragments
-
-import android.support.v4.app.Fragment
-import com.simplemobiletools.commons.extensions.*
-import com.simplemobiletools.commons.helpers.OTG_PATH
-import com.simplemobiletools.gallery.extensions.config
-import com.simplemobiletools.gallery.helpers.*
-import com.simplemobiletools.gallery.models.Medium
-import java.io.File
-
-abstract class ViewPagerFragment : Fragment() {
-    var listener: FragmentListener? = null
-
-    abstract fun fullscreenToggled(isFullscreen: Boolean)
-
-    interface FragmentListener {
-        fun fragmentClicked()
-
-        fun videoEnded(): Boolean
-
-        fun goToPrevItem()
-
-        fun goToNextItem()
-    }
-
-    fun getMediumExtendedDetails(medium: Medium): String {
-        val file = File(medium.path)
-        if (!file.exists()) {
-            return ""
-        }
-
-        val path = "${file.parent.trimEnd('/')}/"
-        val exif = android.media.ExifInterface(medium.path)
-        val details = StringBuilder()
-        val detailsFlag = context!!.config.extendedDetails
-        if (detailsFlag and EXT_NAME != 0) {
-            medium.name.let { if (it.isNotEmpty()) details.appendln(it) }
-        }
-
-        if (detailsFlag and EXT_PATH != 0) {
-            path.let { if (it.isNotEmpty()) details.appendln(it) }
-        }
-
-        if (detailsFlag and EXT_SIZE != 0) {
-            file.length().formatSize().let { if (it.isNotEmpty()) details.appendln(it) }
-        }
-
-        if (detailsFlag and EXT_RESOLUTION != 0) {
-            file.absolutePath.getResolution()?.formatAsResolution().let { if (it?.isNotEmpty() == true) details.appendln(it) }
-        }
-
-        if (detailsFlag and EXT_LAST_MODIFIED != 0) {
-            file.lastModified().formatDate().let { if (it.isNotEmpty()) details.appendln(it) }
-        }
-
-        if (detailsFlag and EXT_DATE_TAKEN != 0) {
-            path.getExifDateTaken(exif).let { if (it.isNotEmpty()) details.appendln(it) }
-        }
-
-        if (detailsFlag and EXT_CAMERA_MODEL != 0) {
-            path.getExifCameraModel(exif).let { if (it.isNotEmpty()) details.appendln(it) }
-        }
-
-        if (detailsFlag and EXT_EXIF_PROPERTIES != 0) {
-            path.getExifProperties(exif).let { if (it.isNotEmpty()) details.appendln(it) }
-        }
-        return details.toString().trim()
-    }
-
-    fun getPathToLoad(medium: Medium) = if (medium.path.startsWith(OTG_PATH)) medium.path.getOTGPublicPath(context!!) else medium.path
-}

app/src/main/kotlin/com/simplemobiletools/gallery/interfaces/FilterAdapterListener.kt

@@ -1,9 +0,0 @@
-package com.simplemobiletools.gallery.interfaces
-
-import com.simplemobiletools.gallery.models.FilterItem
-
-interface FilterAdapterListener {
-    fun getCurrentFilter(): FilterItem
-
-    fun setCurrentFilter(position: Int)
-}

app/src/main/kotlin/com/simplemobiletools/gallery/models/ThumbnailItem.kt

@@ -1,3 +0,0 @@
-package com.simplemobiletools.gallery.models
-
-open class ThumbnailItem

app/src/main/kotlin/com/simplemobiletools/gallery/pro/App.kt

@@ -1,6 +1,6 @@
-package com.simplemobiletools.gallery
+package com.simplemobiletools.gallery.pro
 
-import android.support.multidex.MultiDexApplication
+import androidx.multidex.MultiDexApplication
 import com.github.ajalt.reprint.core.Reprint
 import com.simplemobiletools.commons.extensions.checkUseEnglish
 

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/EditActivity.kt

@@ -1,38 +1,46 @@
-package com.simplemobiletools.gallery.activities
+package com.simplemobiletools.gallery.pro.activities
 
+import android.annotation.TargetApi
 import android.app.Activity
 import android.content.Intent
 import android.graphics.Bitmap
 import android.graphics.Bitmap.CompressFormat
 import android.graphics.Color
 import android.graphics.Point
+import android.media.ExifInterface
 import android.net.Uri
+import android.os.Build
 import android.os.Bundle
 import android.provider.MediaStore
-import android.support.v7.widget.LinearLayoutManager
 import android.view.Menu
 import android.view.MenuItem
 import android.widget.RelativeLayout
+import androidx.recyclerview.widget.LinearLayoutManager
 import com.bumptech.glide.Glide
 import com.bumptech.glide.load.DataSource
+import com.bumptech.glide.load.DecodeFormat
 import com.bumptech.glide.load.engine.DiskCacheStrategy
 import com.bumptech.glide.load.engine.GlideException
 import com.bumptech.glide.request.RequestListener
 import com.bumptech.glide.request.RequestOptions
 import com.bumptech.glide.request.target.Target
+import com.simplemobiletools.commons.dialogs.ColorPickerDialog
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.OTG_PATH
 import com.simplemobiletools.commons.helpers.PERMISSION_WRITE_STORAGE
 import com.simplemobiletools.commons.helpers.REAL_FILE_PATH
+import com.simplemobiletools.commons.helpers.isNougatPlus
 import com.simplemobiletools.commons.models.FileDirItem
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.BuildConfig
-import com.simplemobiletools.gallery.adapters.FiltersAdapter
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.dialogs.ResizeDialog
+import com.simplemobiletools.gallery.pro.adapters.FiltersAdapter
-import com.simplemobiletools.gallery.dialogs.SaveAsDialog
+import com.simplemobiletools.gallery.pro.dialogs.OtherAspectRatioDialog
-import com.simplemobiletools.gallery.extensions.config
+import com.simplemobiletools.gallery.pro.dialogs.ResizeDialog
-import com.simplemobiletools.gallery.extensions.openEditor
+import com.simplemobiletools.gallery.pro.dialogs.SaveAsDialog
-import com.simplemobiletools.gallery.helpers.FilterThumbnailsManager
+import com.simplemobiletools.gallery.pro.extensions.config
-import com.simplemobiletools.gallery.models.FilterItem
+import com.simplemobiletools.gallery.pro.extensions.openEditor
+import com.simplemobiletools.gallery.pro.helpers.*
+import com.simplemobiletools.gallery.pro.models.FilterItem
 import com.theartofdev.edmodo.cropper.CropImageView
 import com.zomato.photofilters.FilterPack
 import com.zomato.photofilters.imageprocessors.Filter
@@ -40,6 +48,7 @@ import kotlinx.android.synthetic.main.activity_edit.*
 import kotlinx.android.synthetic.main.bottom_actions_aspect_ratio.*
 import kotlinx.android.synthetic.main.bottom_editor_actions_filter.*
 import kotlinx.android.synthetic.main.bottom_editor_crop_rotate_actions.*
+import kotlinx.android.synthetic.main.bottom_editor_draw_actions.*
 import kotlinx.android.synthetic.main.bottom_editor_primary_actions.*
 import java.io.*
 
@@ -50,19 +59,16 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
         }
     }
 
+    private val TEMP_FOLDER_NAME = "images"
     private val ASPECT_X = "aspectX"
     private val ASPECT_Y = "aspectY"
     private val CROP = "crop"
 
-    private val ASPECT_RATIO_FREE = 0
-    private val ASPECT_RATIO_ONE_ONE = 1
-    private val ASPECT_RATIO_FOUR_THREE = 2
-    private val ASPECT_RATIO_SIXTEEN_NINE = 3
-
     // constants for bottom primary action groups
     private val PRIMARY_ACTION_NONE = 0
     private val PRIMARY_ACTION_FILTER = 1
     private val PRIMARY_ACTION_CROP_ROTATE = 2
+    private val PRIMARY_ACTION_DRAW = 3
 
     private val CROP_ROTATE_NONE = 0
     private val CROP_ROTATE_ASPECT_RATIO = 1
@@ -71,13 +77,17 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
     private lateinit var saveUri: Uri
     private var resizeWidth = 0
     private var resizeHeight = 0
+    private var drawColor = 0
+    private var lastOtherAspectRatio: Pair<Int, Int>? = null
     private var currPrimaryAction = PRIMARY_ACTION_NONE
     private var currCropRotateAction = CROP_ROTATE_NONE
     private var currAspectRatio = ASPECT_RATIO_FREE
     private var isCropIntent = false
     private var isEditingWithThirdParty = false
-
+    private var isSharingBitmap = false
-    private var initialBitmap: Bitmap? = null
+    private var wasDrawCanvasPositioned = false
+    private var oldExif: ExifInterface? = null
+    private var filterInitialBitmap: Bitmap? = null
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -93,6 +103,34 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
         }
     }
 
+    override fun onResume() {
+        super.onResume()
+        isEditingWithThirdParty = false
+        bottom_draw_width.setColors(config.textColor, getAdjustedPrimaryColor(), config.backgroundColor)
+    }
+
+    override fun onStop() {
+        super.onStop()
+        if (isEditingWithThirdParty) {
+            finish()
+        }
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        menuInflater.inflate(R.menu.menu_editor, menu)
+        return true
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        when (item.itemId) {
+            R.id.save_as -> saveImage()
+            R.id.edit -> editWith()
+            R.id.share -> shareImage()
+            else -> return super.onOptionsItemSelected(item)
+        }
+        return true
+    }
+
     private fun initEditActivity() {
         if (intent.data == null) {
             toast(R.string.invalid_image_path)
@@ -133,37 +171,25 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
 
         loadDefaultImageView()
         setupBottomActions()
+
+        if (config.lastEditorCropAspectRatio == ASPECT_RATIO_OTHER) {
+            if (config.lastEditorCropOtherAspectRatioX == 0) {
+                config.lastEditorCropOtherAspectRatioX = 1
             }
 
-    override fun onResume() {
+            if (config.lastEditorCropOtherAspectRatioY == 0) {
-        super.onResume()
+                config.lastEditorCropOtherAspectRatioY = 1
-        isEditingWithThirdParty = false
             }
 
-    override fun onStop() {
+            lastOtherAspectRatio = Pair(config.lastEditorCropOtherAspectRatioX, config.lastEditorCropOtherAspectRatioY)
-        super.onStop()
-        if (isEditingWithThirdParty) {
-            finish()
         }
-    }
+        updateAspectRatio(config.lastEditorCropAspectRatio)
-
-    override fun onCreateOptionsMenu(menu: Menu): Boolean {
-        menuInflater.inflate(R.menu.menu_editor, menu)
-        return true
-    }
-
-    override fun onOptionsItemSelected(item: MenuItem): Boolean {
-        when (item.itemId) {
-            R.id.save_as -> saveImage()
-            R.id.edit -> editWith()
-            else -> return super.onOptionsItemSelected(item)
-        }
-        return true
     }
 
     private fun loadDefaultImageView() {
         default_image_view.beVisible()
         crop_image_view.beGone()
+        editor_draw_canvas.beGone()
 
         val options = RequestOptions()
                 .skipMemoryCache(true)
@@ -178,21 +204,22 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
 
                     override fun onResourceReady(bitmap: Bitmap?, model: Any?, target: Target<Bitmap>?, dataSource: DataSource?, isFirstResource: Boolean): Boolean {
                         val currentFilter = getFiltersAdapter()?.getCurrentFilter()
-                        if (initialBitmap == null) {
+                        if (filterInitialBitmap == null) {
                             loadCropImageView()
                             bottomCropRotateClicked()
                         }
 
-                        if (initialBitmap != null && currentFilter != null && currentFilter.filter.name != getString(R.string.none)) {
+                        if (filterInitialBitmap != null && currentFilter != null && currentFilter.filter.name != getString(R.string.none)) {
                             default_image_view.onGlobalLayout {
                                 applyFilter(currentFilter)
                             }
                         } else {
-                            initialBitmap = bitmap
+                            filterInitialBitmap = bitmap
                         }
 
                         if (isCropIntent) {
                             bottom_primary_filter.beGone()
+                            bottom_primary_draw.beGone()
                         }
 
                         return false
@@ -202,6 +229,7 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
 
     private fun loadCropImageView() {
         default_image_view.beGone()
+        editor_draw_canvas.beGone()
         crop_image_view.apply {
             beVisible()
             setOnCropImageCompleteListener(this@EditActivity)
@@ -216,9 +244,79 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
         }
     }
 
+    private fun loadDrawCanvas() {
+        default_image_view.beGone()
+        crop_image_view.beGone()
+        editor_draw_canvas.beVisible()
+
+        if (!wasDrawCanvasPositioned) {
+            wasDrawCanvasPositioned = true
+            editor_draw_canvas.onGlobalLayout {
+                Thread {
+                    fillCanvasBackground()
+                }.start()
+            }
+        }
+    }
+
+    private fun fillCanvasBackground() {
+        val size = Point()
+        windowManager.defaultDisplay.getSize(size)
+        val options = RequestOptions()
+                .format(DecodeFormat.PREFER_ARGB_8888)
+                .skipMemoryCache(true)
+                .diskCacheStrategy(DiskCacheStrategy.NONE)
+                .fitCenter()
+
+        try {
+            val builder = Glide.with(applicationContext)
+                    .asBitmap()
+                    .load(uri)
+                    .apply(options)
+                    .into(editor_draw_canvas.width, editor_draw_canvas.height)
+
+            val bitmap = builder.get()
+            runOnUiThread {
+                editor_draw_canvas.apply {
+                    updateBackgroundBitmap(bitmap)
+                    layoutParams.width = bitmap.width
+                    layoutParams.height = bitmap.height
+                    y = (height - bitmap.height) / 2f
+                    requestLayout()
+                }
+            }
+        } catch (e: Exception) {
+            showErrorToast(e)
+        }
+    }
+
+    @TargetApi(Build.VERSION_CODES.N)
     private fun saveImage() {
+        var inputStream: InputStream? = null
+        try {
+            if (isNougatPlus()) {
+                inputStream = contentResolver.openInputStream(uri)
+                oldExif = ExifInterface(inputStream)
+            }
+        } catch (e: Exception) {
+        } finally {
+            inputStream?.close()
+        }
+
         if (crop_image_view.isVisible()) {
             crop_image_view.getCroppedImageAsync()
+        } else if (editor_draw_canvas.isVisible()) {
+            val bitmap = editor_draw_canvas.getBitmap()
+            if (saveUri.scheme == "file") {
+                SaveAsDialog(this, saveUri.path, true) {
+                    saveBitmapToFile(bitmap, it, true)
+                }
+            } else if (saveUri.scheme == "content") {
+                val filePathGetter = getNewFilePath()
+                SaveAsDialog(this, filePathGetter.first, filePathGetter.second) {
+                    saveBitmapToFile(bitmap, it, true)
+                }
+            }
         } else {
             val currentFilter = getFiltersAdapter()?.getCurrentFilter() ?: return
             val filePathGetter = getNewFilePath()
@@ -244,12 +342,78 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
         }
     }
 
+    private fun shareImage() {
+        Thread {
+            when {
+                default_image_view.isVisible() -> {
+                    val currentFilter = getFiltersAdapter()?.getCurrentFilter()
+                    if (currentFilter == null) {
+                        toast(R.string.unknown_error_occurred)
+                        return@Thread
+                    }
+
+                    val originalBitmap = Glide.with(applicationContext).asBitmap().load(uri).submit(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL).get()
+                    currentFilter!!.filter.processFilter(originalBitmap)
+                    shareBitmap(originalBitmap)
+                }
+                crop_image_view.isVisible() -> {
+                    isSharingBitmap = true
+                    runOnUiThread {
+                        crop_image_view.getCroppedImageAsync()
+                    }
+                }
+                editor_draw_canvas.isVisible() -> shareBitmap(editor_draw_canvas.getBitmap())
+            }
+        }.start()
+    }
+
+    private fun getTempImagePath(bitmap: Bitmap, callback: (path: String?) -> Unit) {
+        val bytes = ByteArrayOutputStream()
+        bitmap.compress(Bitmap.CompressFormat.PNG, 0, bytes)
+
+        val folder = File(cacheDir, TEMP_FOLDER_NAME)
+        if (!folder.exists()) {
+            if (!folder.mkdir()) {
+                callback(null)
+                return
+            }
+        }
+
+        val filename = applicationContext.getFilenameFromContentUri(saveUri) ?: "tmp.jpg"
+        val newPath = "$folder/$filename"
+        val fileDirItem = FileDirItem(newPath, filename)
+        getFileOutputStream(fileDirItem, true) {
+            if (it != null) {
+                try {
+                    it.write(bytes.toByteArray())
+                    callback(newPath)
+                } catch (e: Exception) {
+                } finally {
+                    it.close()
+                }
+            } else {
+                callback("")
+            }
+        }
+    }
+
+    private fun shareBitmap(bitmap: Bitmap) {
+        getTempImagePath(bitmap) {
+            if (it != null) {
+                sharePathIntent(it, BuildConfig.APPLICATION_ID)
+            } else {
+                toast(R.string.unknown_error_occurred)
+            }
+        }
+    }
+
     private fun getFiltersAdapter() = bottom_actions_filter_list.adapter as? FiltersAdapter
 
     private fun setupBottomActions() {
         setupPrimaryActionButtons()
         setupCropRotateActionButtons()
         setupAspectRatioButtons()
+        setupDrawButtons()
     }
 
     private fun setupPrimaryActionButtons() {
@@ -260,6 +424,10 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
         bottom_primary_crop_rotate.setOnClickListener {
             bottomCropRotateClicked()
         }
+
+        bottom_primary_draw.setOnClickListener {
+            bottomDrawClicked()
+        }
     }
 
     private fun bottomFilterClicked() {
@@ -280,6 +448,15 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
         updatePrimaryActionButtons()
     }
 
+    private fun bottomDrawClicked() {
+        currPrimaryAction = if (currPrimaryAction == PRIMARY_ACTION_DRAW) {
+            PRIMARY_ACTION_NONE
+        } else {
+            PRIMARY_ACTION_DRAW
+        }
+        updatePrimaryActionButtons()
+    }
+
     private fun setupCropRotateActionButtons() {
         bottom_rotate.setOnClickListener {
             crop_image_view.rotateImage(90)
@@ -328,34 +505,83 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
         bottom_aspect_ratio_sixteen_nine.setOnClickListener {
             updateAspectRatio(ASPECT_RATIO_SIXTEEN_NINE)
         }
+
+        bottom_aspect_ratio_other.setOnClickListener {
+            OtherAspectRatioDialog(this, lastOtherAspectRatio) {
+                lastOtherAspectRatio = it
+                config.lastEditorCropOtherAspectRatioX = it.first
+                config.lastEditorCropOtherAspectRatioY = it.second
+                updateAspectRatio(ASPECT_RATIO_OTHER)
+            }
+        }
+
         updateAspectRatioButtons()
     }
 
+    private fun setupDrawButtons() {
+        updateDrawColor(config.lastEditorDrawColor)
+        bottom_draw_width.progress = config.lastEditorBrushSize
+        updateBrushSize(config.lastEditorBrushSize)
+
+        bottom_draw_color_clickable.setOnClickListener {
+            ColorPickerDialog(this, drawColor) { wasPositivePressed, color ->
+                if (wasPositivePressed) {
+                    updateDrawColor(color)
+                }
+            }
+        }
+
+        bottom_draw_width.onSeekBarChangeListener {
+            config.lastEditorBrushSize = it
+            updateBrushSize(it)
+        }
+
+        bottom_draw_undo.setOnClickListener {
+            editor_draw_canvas.undo()
+        }
+    }
+
+    private fun updateBrushSize(percent: Int) {
+        editor_draw_canvas.updateBrushSize(percent)
+        val scale = Math.max(0.03f, percent / 100f)
+        bottom_draw_color.scaleX = scale
+        bottom_draw_color.scaleY = scale
+    }
+
     private fun updatePrimaryActionButtons() {
         if (crop_image_view.isGone() && currPrimaryAction == PRIMARY_ACTION_CROP_ROTATE) {
             loadCropImageView()
         } else if (default_image_view.isGone() && currPrimaryAction == PRIMARY_ACTION_FILTER) {
             loadDefaultImageView()
+        } else if (editor_draw_canvas.isGone() && currPrimaryAction == PRIMARY_ACTION_DRAW) {
+            loadDrawCanvas()
         }
 
-        arrayOf(bottom_primary_filter, bottom_primary_crop_rotate).forEach {
+        arrayOf(bottom_primary_filter, bottom_primary_crop_rotate, bottom_primary_draw).forEach {
             it.applyColorFilter(Color.WHITE)
         }
 
         val currentPrimaryActionButton = when (currPrimaryAction) {
             PRIMARY_ACTION_FILTER -> bottom_primary_filter
             PRIMARY_ACTION_CROP_ROTATE -> bottom_primary_crop_rotate
+            PRIMARY_ACTION_DRAW -> bottom_primary_draw
             else -> null
         }
 
-        currentPrimaryActionButton?.applyColorFilter(config.primaryColor)
+        currentPrimaryActionButton?.applyColorFilter(getAdjustedPrimaryColor())
         bottom_editor_filter_actions.beVisibleIf(currPrimaryAction == PRIMARY_ACTION_FILTER)
         bottom_editor_crop_rotate_actions.beVisibleIf(currPrimaryAction == PRIMARY_ACTION_CROP_ROTATE)
+        bottom_editor_draw_actions.beVisibleIf(currPrimaryAction == PRIMARY_ACTION_DRAW)
 
         if (currPrimaryAction == PRIMARY_ACTION_FILTER && bottom_actions_filter_list.adapter == null) {
             Thread {
                 val thumbnailSize = resources.getDimension(R.dimen.bottom_filters_thumbnail_size).toInt()
-                val bitmap = Glide.with(this).asBitmap().load(uri).submit(thumbnailSize, thumbnailSize).get()
+                val bitmap = Glide.with(this)
+                        .asBitmap()
+                        .load(uri)
+                        .submit(thumbnailSize, thumbnailSize)
+                        .get()
+
                 runOnUiThread {
                     val filterThumbnailsManager = FilterThumbnailsManager()
                     filterThumbnailsManager.clearThumbs()
@@ -394,12 +620,13 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
     }
 
     private fun applyFilter(filterItem: FilterItem) {
-        val newBitmap = Bitmap.createBitmap(initialBitmap)
+        val newBitmap = Bitmap.createBitmap(filterInitialBitmap)
         default_image_view.setImageBitmap(filterItem.filter.processFilter(newBitmap))
     }
 
     private fun updateAspectRatio(aspectRatio: Int) {
         currAspectRatio = aspectRatio
+        config.lastEditorCropAspectRatio = aspectRatio
         updateAspectRatioButtons()
 
         crop_image_view.apply {
@@ -409,7 +636,8 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
                 val newAspectRatio = when (aspectRatio) {
                     ASPECT_RATIO_ONE_ONE -> Pair(1, 1)
                     ASPECT_RATIO_FOUR_THREE -> Pair(4, 3)
-                    else -> Pair(16, 9)
+                    ASPECT_RATIO_SIXTEEN_NINE -> Pair(16, 9)
+                    else -> Pair(lastOtherAspectRatio!!.first, lastOtherAspectRatio!!.second)
                 }
 
                 setAspectRatio(newAspectRatio.first, newAspectRatio.second)
@@ -418,7 +646,7 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
     }
 
     private fun updateAspectRatioButtons() {
-        arrayOf(bottom_aspect_ratio_free, bottom_aspect_ratio_one_one, bottom_aspect_ratio_four_three, bottom_aspect_ratio_sixteen_nine).forEach {
+        arrayOf(bottom_aspect_ratio_free, bottom_aspect_ratio_one_one, bottom_aspect_ratio_four_three, bottom_aspect_ratio_sixteen_nine, bottom_aspect_ratio_other).forEach {
             it.setTextColor(Color.WHITE)
         }
 
@@ -426,10 +654,11 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
             ASPECT_RATIO_FREE -> bottom_aspect_ratio_free
             ASPECT_RATIO_ONE_ONE -> bottom_aspect_ratio_one_one
             ASPECT_RATIO_FOUR_THREE -> bottom_aspect_ratio_four_three
-            else -> bottom_aspect_ratio_sixteen_nine
+            ASPECT_RATIO_SIXTEEN_NINE -> bottom_aspect_ratio_sixteen_nine
+            else -> bottom_aspect_ratio_other
         }
 
-        currentAspectRatioButton.setTextColor(config.primaryColor)
+        currentAspectRatioButton.setTextColor(getAdjustedPrimaryColor())
     }
 
     private fun updateCropRotateActionButtons() {
@@ -442,7 +671,14 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
             else -> null
         }
 
-        primaryActionView?.applyColorFilter(config.primaryColor)
+        primaryActionView?.applyColorFilter(getAdjustedPrimaryColor())
+    }
+
+    private fun updateDrawColor(color: Int) {
+        drawColor = color
+        bottom_draw_color.applyColorFilter(color)
+        config.lastEditorDrawColor = color
+        editor_draw_canvas.updateColor(color)
     }
 
     private fun resizeImage() {
@@ -480,15 +716,22 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
 
     override fun onCropImageComplete(view: CropImageView, result: CropImageView.CropResult) {
         if (result.error == null) {
+            val bitmap = result.bitmap
+            if (isSharingBitmap) {
+                isSharingBitmap = false
+                shareBitmap(bitmap)
+                return
+            }
+
             if (isCropIntent) {
                 if (saveUri.scheme == "file") {
-                    saveBitmapToFile(result.bitmap, saveUri.path, true)
+                    saveBitmapToFile(bitmap, saveUri.path, true)
                 } else {
                     var inputStream: InputStream? = null
                     var outputStream: OutputStream? = null
                     try {
                         val stream = ByteArrayOutputStream()
-                        result.bitmap.compress(CompressFormat.JPEG, 100, stream)
+                        bitmap.compress(CompressFormat.JPEG, 100, stream)
                         inputStream = ByteArrayInputStream(stream.toByteArray())
                         outputStream = contentResolver.openOutputStream(saveUri)
                         inputStream.copyTo(outputStream)
@@ -506,12 +749,12 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
                 }
             } else if (saveUri.scheme == "file") {
                 SaveAsDialog(this, saveUri.path, true) {
-                    saveBitmapToFile(result.bitmap, it, true)
+                    saveBitmapToFile(bitmap, it, true)
                 }
             } else if (saveUri.scheme == "content") {
                 val filePathGetter = getNewFilePath()
                 SaveAsDialog(this, filePathGetter.first, filePathGetter.second) {
-                    saveBitmapToFile(result.bitmap, it, true)
+                    saveBitmapToFile(bitmap, it, true)
                 }
             } else {
                 toast(R.string.unknown_file_location)
@@ -561,6 +804,7 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
         }
     }
 
+    @TargetApi(Build.VERSION_CODES.N)
     private fun saveBitmap(file: File, bitmap: Bitmap, out: OutputStream, showSavingToast: Boolean) {
         if (showSavingToast) {
             toast(R.string.saving)
@@ -572,13 +816,22 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
         } else {
             bitmap.compress(file.absolutePath.getCompressionFormat(), 90, out)
         }
+
+        try {
+            if (isNougatPlus()) {
+                val newExif = ExifInterface(file.absolutePath)
+                oldExif?.copyTo(newExif, false)
+            }
+        } catch (e: Exception) {
+        }
+
         setResult(Activity.RESULT_OK, intent)
         scanFinalPath(file.absolutePath)
         out.close()
     }
 
     private fun editWith() {
-        openEditor(uri.toString())
+        openEditor(uri.toString(), true)
         isEditingWithThirdParty = true
     }
 

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/ExcludedFoldersActivity.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.activities
+package com.simplemobiletools.gallery.pro.activities
 
 import android.os.Bundle
 import android.view.Menu
@@ -6,9 +6,9 @@ import android.view.MenuItem
 import com.simplemobiletools.commons.dialogs.FilePickerDialog
 import com.simplemobiletools.commons.extensions.beVisibleIf
 import com.simplemobiletools.commons.interfaces.RefreshRecyclerViewListener
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.adapters.ManageFoldersAdapter
+import com.simplemobiletools.gallery.pro.adapters.ManageFoldersAdapter
-import com.simplemobiletools.gallery.extensions.config
+import com.simplemobiletools.gallery.pro.extensions.config
 import kotlinx.android.synthetic.main.activity_manage_folders.*
 
 class ExcludedFoldersActivity : SimpleActivity(), RefreshRecyclerViewListener {
@@ -20,7 +20,7 @@ class ExcludedFoldersActivity : SimpleActivity(), RefreshRecyclerViewListener {
 
     private fun updateFolders() {
         val folders = ArrayList<String>()
-        config.excludedFolders.mapTo(folders, { it })
+        config.excludedFolders.mapTo(folders) { it }
         manage_folders_placeholder.apply {
             text = getString(R.string.excluded_activity_placeholder)
             beVisibleIf(folders.isEmpty())
@@ -49,7 +49,7 @@ class ExcludedFoldersActivity : SimpleActivity(), RefreshRecyclerViewListener {
     }
 
     private fun addFolder() {
-        FilePickerDialog(this, config.lastFilepickerPath, false, config.shouldShowHidden) {
+        FilePickerDialog(this, config.lastFilepickerPath, false, config.shouldShowHidden, false, true) {
             config.lastFilepickerPath = it
             config.addExcludedFolder(it)
             updateFolders()

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/HiddenFoldersActivity.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.activities
+package com.simplemobiletools.gallery.pro.activities
 
 import android.os.Bundle
 import android.view.Menu
@@ -6,11 +6,11 @@ import android.view.MenuItem
 import com.simplemobiletools.commons.dialogs.FilePickerDialog
 import com.simplemobiletools.commons.extensions.beVisibleIf
 import com.simplemobiletools.commons.interfaces.RefreshRecyclerViewListener
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.adapters.ManageHiddenFoldersAdapter
+import com.simplemobiletools.gallery.pro.adapters.ManageHiddenFoldersAdapter
-import com.simplemobiletools.gallery.extensions.addNoMedia
+import com.simplemobiletools.gallery.pro.extensions.addNoMedia
-import com.simplemobiletools.gallery.extensions.config
+import com.simplemobiletools.gallery.pro.extensions.config
-import com.simplemobiletools.gallery.extensions.getNoMediaFolders
+import com.simplemobiletools.gallery.pro.extensions.getNoMediaFolders
 import kotlinx.android.synthetic.main.activity_manage_folders.*
 
 class HiddenFoldersActivity : SimpleActivity(), RefreshRecyclerViewListener {
@@ -53,7 +53,7 @@ class HiddenFoldersActivity : SimpleActivity(), RefreshRecyclerViewListener {
     }
 
     private fun addFolder() {
-        FilePickerDialog(this, config.lastFilepickerPath, false, config.shouldShowHidden) {
+        FilePickerDialog(this, config.lastFilepickerPath, false, config.shouldShowHidden, false, true) {
             config.lastFilepickerPath = it
             Thread {
                 addNoMedia(it) {

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/IncludedFoldersActivity.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.activities
+package com.simplemobiletools.gallery.pro.activities
 
 import android.os.Bundle
 import android.view.Menu
@@ -7,9 +7,9 @@ import com.simplemobiletools.commons.dialogs.FilePickerDialog
 import com.simplemobiletools.commons.extensions.beVisibleIf
 import com.simplemobiletools.commons.extensions.scanPathRecursively
 import com.simplemobiletools.commons.interfaces.RefreshRecyclerViewListener
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.adapters.ManageFoldersAdapter
+import com.simplemobiletools.gallery.pro.adapters.ManageFoldersAdapter
-import com.simplemobiletools.gallery.extensions.config
+import com.simplemobiletools.gallery.pro.extensions.config
 import kotlinx.android.synthetic.main.activity_manage_folders.*
 
 class IncludedFoldersActivity : SimpleActivity(), RefreshRecyclerViewListener {
@@ -21,7 +21,7 @@ class IncludedFoldersActivity : SimpleActivity(), RefreshRecyclerViewListener {
 
     private fun updateFolders() {
         val folders = ArrayList<String>()
-        config.includedFolders.mapTo(folders, { it })
+        config.includedFolders.mapTo(folders) { it }
         manage_folders_placeholder.apply {
             text = getString(R.string.included_activity_placeholder)
             beVisibleIf(folders.isEmpty())
@@ -50,7 +50,7 @@ class IncludedFoldersActivity : SimpleActivity(), RefreshRecyclerViewListener {
     }
 
     private fun addFolder() {
-        FilePickerDialog(this, config.lastFilepickerPath, false, config.shouldShowHidden) {
+        FilePickerDialog(this, config.lastFilepickerPath, false, config.shouldShowHidden, false, true) {
             config.lastFilepickerPath = it
             config.addIncludedFolder(it)
             updateFolders()

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/MainActivity.kt

@@ -1,42 +1,46 @@
-package com.simplemobiletools.gallery.activities
+package com.simplemobiletools.gallery.pro.activities
 
 import android.app.Activity
+import android.app.SearchManager
 import android.content.ClipData
+import android.content.Context
 import android.content.Intent
 import android.net.Uri
 import android.os.Bundle
 import android.os.Handler
 import android.provider.MediaStore
-import android.support.v7.widget.GridLayoutManager
 import android.view.Menu
 import android.view.MenuItem
 import android.view.ViewGroup
 import android.widget.FrameLayout
 import android.widget.Toast
+import androidx.appcompat.widget.SearchView
+import androidx.core.view.MenuItemCompat
+import androidx.recyclerview.widget.RecyclerView
+import com.simplemobiletools.commons.dialogs.ConfirmationDialog
 import com.simplemobiletools.commons.dialogs.CreateNewFolderDialog
 import com.simplemobiletools.commons.dialogs.FilePickerDialog
-import com.simplemobiletools.commons.dialogs.RadioGroupDialog
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.*
 import com.simplemobiletools.commons.models.FileDirItem
-import com.simplemobiletools.commons.models.RadioItem
 import com.simplemobiletools.commons.models.Release
 import com.simplemobiletools.commons.views.MyGridLayoutManager
 import com.simplemobiletools.commons.views.MyRecyclerView
-import com.simplemobiletools.gallery.BuildConfig
+import com.simplemobiletools.gallery.pro.BuildConfig
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.adapters.DirectoryAdapter
+import com.simplemobiletools.gallery.pro.adapters.DirectoryAdapter
-import com.simplemobiletools.gallery.databases.GalleryDatabase
+import com.simplemobiletools.gallery.pro.databases.GalleryDatabase
-import com.simplemobiletools.gallery.dialogs.ChangeSortingDialog
+import com.simplemobiletools.gallery.pro.dialogs.ChangeSortingDialog
-import com.simplemobiletools.gallery.dialogs.FilterMediaDialog
+import com.simplemobiletools.gallery.pro.dialogs.ChangeViewTypeDialog
-import com.simplemobiletools.gallery.extensions.*
+import com.simplemobiletools.gallery.pro.dialogs.FilterMediaDialog
-import com.simplemobiletools.gallery.helpers.*
+import com.simplemobiletools.gallery.pro.extensions.*
-import com.simplemobiletools.gallery.interfaces.DirectoryDao
+import com.simplemobiletools.gallery.pro.helpers.*
-import com.simplemobiletools.gallery.interfaces.DirectoryOperationsListener
+import com.simplemobiletools.gallery.pro.interfaces.DirectoryDao
-import com.simplemobiletools.gallery.interfaces.MediumDao
+import com.simplemobiletools.gallery.pro.interfaces.DirectoryOperationsListener
-import com.simplemobiletools.gallery.models.AlbumCover
+import com.simplemobiletools.gallery.pro.interfaces.MediumDao
-import com.simplemobiletools.gallery.models.Directory
+import com.simplemobiletools.gallery.pro.models.AlbumCover
-import com.simplemobiletools.gallery.models.Medium
+import com.simplemobiletools.gallery.pro.models.Directory
+import com.simplemobiletools.gallery.pro.models.Medium
 import kotlinx.android.synthetic.main.activity_main.*
 import java.io.*
 import java.util.*
@@ -60,11 +64,16 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
     private var mIsPasswordProtectionPending = false
     private var mWasProtectionHandled = false
     private var mShouldStopFetching = false
+    private var mIsSearchOpen = false
     private var mLatestMediaId = 0L
     private var mLatestMediaDateId = 0L
+    private var mCurrentPathPrefix = ""                 // used at "Group direct subfolders" for navigation
+    private var mOpenedSubfolders = arrayListOf("")     // used at "Group direct subfolders" for navigating Up with the back button
     private var mLastMediaHandler = Handler()
     private var mTempShowHiddenHandler = Handler()
     private var mZoomListener: MyRecyclerView.MyZoomListener? = null
+    private var mSearchMenuItem: MenuItem? = null
+    private var mDirs = ArrayList<Directory>()
 
     private var mStoredAnimateGifs = true
     private var mStoredCropThumbnails = true
@@ -110,7 +119,7 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
             showFilterMediaDialog()
         }
 
-        mIsPasswordProtectionPending = config.appPasswordProtectionOn
+        mIsPasswordProtectionPending = config.isAppPasswordProtectionOn
         setupLatestMediaId()
 
         // notify some users about the Clock app
@@ -119,10 +128,6 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
             NewAppDialog(this, NEW_APP_PACKAGE, "Simple Clock")
         }*/
 
-        if (!config.wasOTGHandled && hasPermission(PERMISSION_WRITE_STORAGE)) {
-            checkOTGInclusion()
-        }
-
         if (!config.wereFavoritesPinned) {
             config.addPinnedFolders(hashSetOf(FAVORITES))
             config.wereFavoritesPinned = true
@@ -140,6 +145,8 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
                 config.filterMedia += TYPE_SVGS
             }
         }
+
+        updateWidgets()
     }
 
     override fun onStart() {
@@ -213,6 +220,8 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
 
     override fun onStop() {
         super.onStop()
+        mSearchMenuItem?.collapseActionView()
+
         if (config.temporarilyShowHidden || config.tempSkipDeleteConfirmation) {
             mTempShowHiddenHandler.postDelayed({
                 config.temporarilyShowHidden = false
@@ -230,9 +239,26 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
             config.tempSkipDeleteConfirmation = false
             mTempShowHiddenHandler.removeCallbacksAndMessages(null)
             removeTempFolder()
+
+            if (!config.showAll) {
                 GalleryDatabase.destroyInstance()
             }
         }
+    }
+
+    override fun onBackPressed() {
+        if (config.groupDirectSubfolders) {
+            if (mCurrentPathPrefix.isEmpty()) {
+                super.onBackPressed()
+            } else {
+                mOpenedSubfolders.removeAt(mOpenedSubfolders.size - 1)
+                mCurrentPathPrefix = mOpenedSubfolders.last()
+                setupAdapter(mDirs)
+            }
+        } else {
+            super.onBackPressed()
+        }
+    }
 
     override fun onCreateOptionsMenu(menu: Menu): Boolean {
         if (mIsThirdPartyIntent) {
@@ -242,10 +268,13 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
             menu.apply {
                 findItem(R.id.increase_column_count).isVisible = config.viewTypeFolders == VIEW_TYPE_GRID && config.dirColumnCnt < MAX_COLUMN_COUNT
                 findItem(R.id.reduce_column_count).isVisible = config.viewTypeFolders == VIEW_TYPE_GRID && config.dirColumnCnt > 1
+                setupSearch(this)
             }
         }
+
         menu.findItem(R.id.temporarily_show_hidden).isVisible = !config.shouldShowHidden
         menu.findItem(R.id.stop_showing_hidden).isVisible = config.temporarilyShowHidden
+
         return true
     }
 
@@ -292,6 +321,43 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
         }
     }
 
+    private fun setupSearch(menu: Menu) {
+        val searchManager = getSystemService(Context.SEARCH_SERVICE) as SearchManager
+        mSearchMenuItem = menu.findItem(R.id.search)
+        (mSearchMenuItem?.actionView as? SearchView)?.apply {
+            setSearchableInfo(searchManager.getSearchableInfo(componentName))
+            isSubmitButtonEnabled = false
+            setOnQueryTextListener(object : SearchView.OnQueryTextListener {
+                override fun onQueryTextSubmit(query: String) = false
+
+                override fun onQueryTextChange(newText: String): Boolean {
+                    if (mIsSearchOpen) {
+                        setupAdapter(mDirs, newText)
+                    }
+                    return true
+                }
+            })
+        }
+
+        MenuItemCompat.setOnActionExpandListener(mSearchMenuItem, object : MenuItemCompat.OnActionExpandListener {
+            override fun onMenuItemActionExpand(item: MenuItem?): Boolean {
+                mIsSearchOpen = true
+                directories_refresh_layout.isEnabled = false
+                return true
+            }
+
+            // this triggers on device rotation too, avoid doing anything
+            override fun onMenuItemActionCollapse(item: MenuItem?): Boolean {
+                if (mIsSearchOpen) {
+                    mIsSearchOpen = false
+                    directories_refresh_layout.isEnabled = config.enablePullToRefresh
+                    setupAdapter(mDirs, "")
+                }
+                return true
+            }
+        })
+    }
+
     private fun removeTempFolder() {
         if (config.tempFolderPath.isNotEmpty()) {
             val newFolder = File(config.tempFolderPath)
@@ -309,10 +375,12 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
         Thread {
             if (hasOTGConnected()) {
                 runOnUiThread {
+                    ConfirmationDialog(this, getString(R.string.usb_detected), positive = R.string.ok, negative = 0) {
                         handleOTGPermission {
                             config.addIncludedFolder(OTG_PATH)
                         }
                     }
+                }
                 config.wasOTGHandled = true
             }
         }.start()
@@ -321,6 +389,10 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
     private fun tryLoadGallery() {
         handlePermission(PERMISSION_WRITE_STORAGE) {
             if (it) {
+                if (!config.wasOTGHandled && hasPermission(PERMISSION_WRITE_STORAGE)) {
+                    checkOTGInclusion()
+                }
+
                 if (config.showAll) {
                     showAllMedia()
                 } else {
@@ -387,17 +459,11 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
     }
 
     private fun changeViewType() {
-        val items = arrayListOf(
+        ChangeViewTypeDialog(this, true) {
-                RadioItem(VIEW_TYPE_GRID, getString(R.string.grid)),
-                RadioItem(VIEW_TYPE_LIST, getString(R.string.list)))
-
-        RadioGroupDialog(this, items, config.viewTypeFolders) {
-            config.viewTypeFolders = it as Int
             invalidateOptionsMenu()
             setupLayoutManager()
-            val dirs = getCurrentlyDisplayedDirs()
             directories_grid.adapter = null
-            setupAdapter(dirs)
+            setupAdapter(mDirs)
         }
     }
 
@@ -420,16 +486,31 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
     }
 
     override fun deleteFolders(folders: ArrayList<File>) {
-        val fileDirItems = folders.map { FileDirItem(it.absolutePath, it.name, true) } as ArrayList<FileDirItem>
+        val fileDirItems = folders.asSequence().filter { it.isDirectory }.map { FileDirItem(it.absolutePath, it.name, true) }.toMutableList() as ArrayList<FileDirItem>
-        fileDirItems.forEach {
+        when {
-            toast(String.format(getString(R.string.deleting_folder), it.name), Toast.LENGTH_LONG)
+            fileDirItems.isEmpty() -> return
+            fileDirItems.size == 1 -> toast(String.format(getString(R.string.deleting_folder), fileDirItems.first().name))
+            else -> {
+                val baseString = if (config.useRecycleBin) R.plurals.moving_items_into_bin else R.plurals.delete_items
+                val deletingItems = resources.getQuantityString(baseString, fileDirItems.size, fileDirItems.size)
+                toast(deletingItems)
+            }
         }
 
         if (config.useRecycleBin) {
             val pathsToDelete = ArrayList<String>()
+            val filter = config.filterMedia
+            val showHidden = config.shouldShowHidden
             fileDirItems.filter { it.isDirectory }.forEach {
                 val files = File(it.path).listFiles()
-                files?.filter { it.absolutePath.isMediaFile() }?.mapTo(pathsToDelete) { it.absolutePath }
+                files?.filter {
+                    it.absolutePath.isMediaFile() && (showHidden || !it.name.startsWith('.')) &&
+                            ((it.isImageFast() && filter and TYPE_IMAGES != 0) ||
+                                    (it.isVideoFast() && filter and TYPE_VIDEOS != 0) ||
+                                    (it.isGif() && filter and TYPE_GIFS != 0) ||
+                                    (it.isRawFast() && filter and TYPE_RAWS != 0) ||
+                                    (it.isSvg() && filter and TYPE_SVGS != 0))
+                }?.mapTo(pathsToDelete) { it.absolutePath }
             }
 
             movePathsInRecycleBin(pathsToDelete, mMediumDao) {
@@ -469,10 +550,10 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
     private fun setupGridLayoutManager() {
         val layoutManager = directories_grid.layoutManager as MyGridLayoutManager
         if (config.scrollHorizontally) {
-            layoutManager.orientation = GridLayoutManager.HORIZONTAL
+            layoutManager.orientation = RecyclerView.HORIZONTAL
             directories_refresh_layout.layoutParams = FrameLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.MATCH_PARENT)
         } else {
-            layoutManager.orientation = GridLayoutManager.VERTICAL
+            layoutManager.orientation = RecyclerView.VERTICAL
             directories_refresh_layout.layoutParams = FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)
         }
 
@@ -531,13 +612,13 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
     private fun setupListLayoutManager() {
         val layoutManager = directories_grid.layoutManager as MyGridLayoutManager
         layoutManager.spanCount = 1
-        layoutManager.orientation = GridLayoutManager.VERTICAL
+        layoutManager.orientation = RecyclerView.VERTICAL
         directories_refresh_layout.layoutParams = FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)
         mZoomListener = null
     }
 
     private fun createNewFolder() {
-        FilePickerDialog(this, internalStoragePath, false, config.shouldShowHidden) {
+        FilePickerDialog(this, internalStoragePath, false, config.shouldShowHidden, false, true) {
             CreateNewFolderDialog(this, it) {
                 config.tempFolderPath = it
                 Thread {
@@ -597,14 +678,22 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
         if (resultCode == Activity.RESULT_OK) {
             if (requestCode == PICK_MEDIA && resultData != null) {
                 val resultIntent = Intent()
+                var resultUri: Uri? = null
                 if (mIsThirdPartyIntent) {
                     when {
-                        intent.extras?.containsKey(MediaStore.EXTRA_OUTPUT) == true -> fillExtraOutput(resultData)
+                        intent.extras?.containsKey(MediaStore.EXTRA_OUTPUT) == true -> {
+                            resultUri = fillExtraOutput(resultData)
+                        }
                         resultData.extras?.containsKey(PICKED_PATHS) == true -> fillPickedPaths(resultData, resultIntent)
                         else -> fillIntentPath(resultData, resultIntent)
                     }
                 }
 
+                if (resultUri != null) {
+                    resultIntent.data = resultUri
+                    resultIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+                }
+
                 setResult(Activity.RESULT_OK, resultIntent)
                 finish()
             } else if (requestCode == PICK_WALLPAPER) {
@@ -615,22 +704,25 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
         super.onActivityResult(requestCode, resultCode, resultData)
     }
 
-    private fun fillExtraOutput(resultData: Intent) {
+    private fun fillExtraOutput(resultData: Intent): Uri? {
-        val path = resultData.data.path
+        val file = File(resultData.data.path)
         var inputStream: InputStream? = null
         var outputStream: OutputStream? = null
         try {
             val output = intent.extras.get(MediaStore.EXTRA_OUTPUT) as Uri
-            inputStream = FileInputStream(File(path))
+            inputStream = FileInputStream(file)
             outputStream = contentResolver.openOutputStream(output)
             inputStream.copyTo(outputStream)
         } catch (e: SecurityException) {
             showErrorToast(e)
         } catch (ignored: FileNotFoundException) {
+            return getFilePublicUri(file, BuildConfig.APPLICATION_ID)
         } finally {
             inputStream?.close()
             outputStream?.close()
         }
+
+        return null
     }
 
     private fun fillPickedPaths(resultData: Intent, resultIntent: Intent) {
@@ -678,9 +770,10 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
     }
 
     private fun gotDirectories(newDirs: ArrayList<Directory>) {
-        // if hidden item showing is disabled but all Favorite items are hidden, hide the Favorites folder
         mIsGettingDirs = false
         mShouldStopFetching = false
+
+        // if hidden item showing is disabled but all Favorite items are hidden, hide the Favorites folder
         if (!config.shouldShowHidden) {
             val favoritesFolder = newDirs.firstOrNull { it.areFavorites() }
             if (favoritesFolder != null && favoritesFolder.tmb.getFilenameFromPath().startsWith('.')) {
@@ -694,10 +787,10 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
         runOnUiThread {
             checkPlaceholderVisibility(dirs)
 
-            val allowHorizontalScroll = config.scrollHorizontally && config.viewTypeFiles == VIEW_TYPE_GRID
+            val allowHorizontalScroll = config.scrollHorizontally && config.viewTypeFolders == VIEW_TYPE_GRID
             directories_vertical_fastscroller.beVisibleIf(directories_grid.isVisible() && !allowHorizontalScroll)
             directories_horizontal_fastscroller.beVisibleIf(directories_grid.isVisible() && allowHorizontalScroll)
-            setupAdapter(dirs)
+            setupAdapter(dirs.clone() as ArrayList<Directory>)
         }
 
         // cached folders have been loaded, recheck folders one by one starting with the first displayed
@@ -707,9 +800,11 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
         val hiddenString = getString(R.string.hidden)
         val albumCovers = config.parseAlbumCovers()
         val includedFolders = config.includedFolders
+        val tempFolderPath = config.tempFolderPath
         val isSortingAscending = config.directorySorting and SORT_DESCENDING == 0
         val getProperDateTaken = config.directorySorting and SORT_BY_DATE_TAKEN != 0
         val favoritePaths = getFavoritePaths()
+        val dirPathsToRemove = ArrayList<String>()
 
         try {
             for (directory in dirs) {
@@ -717,15 +812,18 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
                     return
                 }
 
-                val curMedia = mediaFetcher.getFilesFrom(directory.path, getImagesOnly, getVideosOnly, getProperDateTaken, favoritePaths)
+                val curMedia = mediaFetcher.getFilesFrom(directory.path, getImagesOnly, getVideosOnly, getProperDateTaken, favoritePaths, false)
                 val newDir = if (curMedia.isEmpty()) {
+                    if (directory.path != tempFolderPath) {
+                        dirPathsToRemove.add(directory.path)
+                    }
                     directory
                 } else {
                     createDirectoryFromMedia(directory.path, curMedia, albumCovers, hiddenString, includedFolders, isSortingAscending)
                 }
 
                 // we are looping through the already displayed folders looking for changes, do not do anything if nothing changed
-                if (directory == newDir) {
+                if (directory.copy(subfoldersCount = 0, subfoldersMediaCount = 0) == newDir) {
                     continue
                 }
 
@@ -739,7 +837,7 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
                     types = newDir.types
                 }
 
-                showSortedDirs(dirs)
+                setupAdapter(dirs)
 
                 // update directories and media files in the local db, delete invalid items
                 updateDBDirectory(directory, mDirectoryDao)
@@ -751,7 +849,7 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
                         if (!curMedia.contains(it)) {
                             val path = (it as? Medium)?.path
                             if (path != null) {
-                                mMediumDao.deleteMediumPath(path)
+                                deleteDBPath(mMediumDao, path)
                             }
                         }
                     }
@@ -760,9 +858,18 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
         } catch (ignored: Exception) {
         }
 
+        if (dirPathsToRemove.isNotEmpty()) {
+            val dirsToRemove = dirs.filter { dirPathsToRemove.contains(it.path) }
+            dirsToRemove.forEach {
+                mDirectoryDao.deleteDirPath(it.path)
+            }
+            dirs.removeAll(dirsToRemove)
+            setupAdapter(dirs)
+        }
+
         val foldersToScan = mediaFetcher.getFoldersToScan()
         foldersToScan.add(FAVORITES)
-        if (config.showRecycleBinAtFolders) {
+        if (config.useRecycleBin && config.showRecycleBinAtFolders) {
             foldersToScan.add(RECYCLE_BIN)
         } else {
             foldersToScan.remove(RECYCLE_BIN)
@@ -778,7 +885,7 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
                 return
             }
 
-            val newMedia = mediaFetcher.getFilesFrom(folder, getImagesOnly, getVideosOnly, getProperDateTaken, favoritePaths)
+            val newMedia = mediaFetcher.getFilesFrom(folder, getImagesOnly, getVideosOnly, getProperDateTaken, favoritePaths, false)
             if (newMedia.isEmpty()) {
                 continue
             }
@@ -794,7 +901,7 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
 
             val newDir = createDirectoryFromMedia(folder, newMedia, albumCovers, hiddenString, includedFolders, isSortingAscending)
             dirs.add(newDir)
-            showSortedDirs(dirs)
+            setupAdapter(dirs)
             mDirectoryDao.insert(newDir)
             if (folder != RECYCLE_BIN) {
                 mMediumDao.insertAll(newMedia)
@@ -818,6 +925,11 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
         } catch (e: Exception) {
             config.everShownFolders = HashSet()
         }
+        mDirs = dirs.clone() as ArrayList<Directory>
+
+        if (mDirs.size > 55) {
+            excludeSpamFolders()
+        }
     }
 
     private fun checkPlaceholderVisibility(dirs: ArrayList<Directory>) {
@@ -826,15 +938,6 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
         directories_grid.beVisibleIf(directories_empty_text_label.isGone())
     }
 
-    private fun showSortedDirs(dirs: ArrayList<Directory>) {
-        var sortedDirs = getSortedDirectories(dirs)
-        sortedDirs = sortedDirs.distinctBy { it.path.getDistinctPath() } as ArrayList<Directory>
-
-        runOnUiThread {
-            (directories_grid.adapter as? DirectoryAdapter)?.updateDirs(sortedDirs)
-        }
-    }
-
     private fun createDirectoryFromMedia(path: String, curMedia: ArrayList<Medium>, albumCovers: ArrayList<AlbumCover>, hiddenString: String,
                                          includedFolders: MutableSet<String>, isSortingAscending: Boolean): Directory {
         var thumbnail = curMedia.firstOrNull { getDoesFilePathExist(it.path) }?.path ?: ""
@@ -848,43 +951,59 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
             }
         }
 
-        val mediaTypes = curMedia.getDirMediaTypes()
-        val dirName = when (path) {
-            FAVORITES -> getString(R.string.favorites)
-            RECYCLE_BIN -> getString(R.string.recycle_bin)
-            else -> checkAppendingHidden(path, hiddenString, includedFolders)
-        }
-
         val firstItem = curMedia.first()
         val lastItem = curMedia.last()
+        val dirName = checkAppendingHidden(path, hiddenString, includedFolders)
         val lastModified = if (isSortingAscending) Math.min(firstItem.modified, lastItem.modified) else Math.max(firstItem.modified, lastItem.modified)
         val dateTaken = if (isSortingAscending) Math.min(firstItem.taken, lastItem.taken) else Math.max(firstItem.taken, lastItem.taken)
         val size = curMedia.sumByLong { it.size }
+        val mediaTypes = curMedia.getDirMediaTypes()
         return Directory(null, path, thumbnail, dirName, curMedia.size, lastModified, dateTaken, size, getPathLocation(path), mediaTypes)
     }
 
-    private fun setupAdapter(dirs: ArrayList<Directory>) {
+    private fun setupAdapter(dirs: ArrayList<Directory>, textToSearch: String = "") {
         val currAdapter = directories_grid.adapter
+        val distinctDirs = dirs.distinctBy { it.path.getDistinctPath() }.toMutableList() as ArrayList<Directory>
+        val sortedDirs = getSortedDirectories(distinctDirs)
+        var dirsToShow = getDirsToShow(sortedDirs, mDirs, mCurrentPathPrefix).clone() as ArrayList<Directory>
+
         if (currAdapter == null) {
             initZoomListener()
             val fastscroller = if (config.scrollHorizontally) directories_horizontal_fastscroller else directories_vertical_fastscroller
-            DirectoryAdapter(this, dirs.clone() as ArrayList<Directory>, this, directories_grid, isPickIntent(intent) || isGetAnyContentIntent(intent), fastscroller) {
+            DirectoryAdapter(this, dirsToShow, this, directories_grid, isPickIntent(intent) || isGetAnyContentIntent(intent), fastscroller) {
-                val path = (it as Directory).path
+                val clickedDir = it as Directory
+                val path = clickedDir.path
+                if (clickedDir.subfoldersCount == 1 || !config.groupDirectSubfolders) {
                     if (path != config.tempFolderPath) {
                         itemClicked(path)
                     }
+                } else {
+                    mCurrentPathPrefix = path
+                    mOpenedSubfolders.add(path)
+                    setupAdapter(mDirs, "")
+                }
             }.apply {
                 setupZoomListener(mZoomListener)
+                runOnUiThread {
                     directories_grid.adapter = this
+                    setupScrollDirection()
                 }
+            }
+            measureRecyclerViewContent(dirsToShow)
         } else {
-            (currAdapter as DirectoryAdapter).updateDirs(dirs)
+            if (textToSearch.isNotEmpty()) {
+                dirsToShow = dirsToShow.filter { it.name.contains(textToSearch, true) }.sortedBy { !it.name.startsWith(textToSearch, true) }.toMutableList() as ArrayList
+            }
+            runOnUiThread {
+                (directories_grid.adapter as? DirectoryAdapter)?.updateDirs(dirsToShow)
+                measureRecyclerViewContent(dirsToShow)
+            }
         }
 
-        getRecyclerAdapter()?.dirs?.apply {
+        // recyclerview sometimes becomes empty at init/update, triggering an invisible refresh like this seems to work fine
-            measureRecyclerViewContent(this)
+        directories_grid.postDelayed({
-        }
+            directories_grid.scrollBy(0, 0)
-        setupScrollDirection()
+        }, 500)
     }
 
     private fun setupScrollDirection() {
@@ -915,7 +1034,7 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
                 invalidDirs.add(it)
             } else if (it.path != config.tempFolderPath) {
                 val children = if (it.path.startsWith(OTG_PATH)) getOTGFolderChildrenNames(it.path) else File(it.path).list()?.asList()
-                val hasMediaFile = children?.any { it.isMediaFile() } ?: false
+                val hasMediaFile = children?.any { it?.isMediaFile() == true } ?: false
                 if (!hasMediaFile) {
                     invalidDirs.add(it)
                 }
@@ -938,7 +1057,7 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
 
         if (invalidDirs.isNotEmpty()) {
             dirs.removeAll(invalidDirs)
-            showSortedDirs(dirs)
+            setupAdapter(dirs)
             invalidDirs.forEach {
                 mDirectoryDao.deleteDirPath(it.path)
             }
@@ -959,7 +1078,7 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
     }
 
     private fun checkLastMediaChanged() {
-        if (isActivityDestroyed()) {
+        if (isDestroyed) {
             return
         }
 
@@ -981,18 +1100,64 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
         }, LAST_MEDIA_CHECK_PERIOD)
     }
 
-
     private fun checkRecycleBinItems() {
         if (config.useRecycleBin && config.lastBinCheck < System.currentTimeMillis() - DAY_SECONDS * 1000) {
             config.lastBinCheck = System.currentTimeMillis()
             Handler().postDelayed({
                 Thread {
+                    try {
                         mMediumDao.deleteOldRecycleBinItems(System.currentTimeMillis() - MONTH_MILLISECONDS)
+                    } catch (e: Exception) {
+                    }
                 }.start()
             }, 3000L)
         }
     }
 
+    // exclude probably unwanted folders, for example facebook stickers are split between hundreds of separate folders like
+    // /storage/emulated/0/Android/data/com.facebook.orca/files/stickers/175139712676531/209575122566323
+    // /storage/emulated/0/Android/data/com.facebook.orca/files/stickers/497837993632037/499671223448714
+    private fun excludeSpamFolders() {
+        Thread {
+            try {
+                val internalPath = internalStoragePath
+                val checkedPaths = ArrayList<String>()
+                val oftenRepeatedPaths = ArrayList<String>()
+                val paths = mDirs.map { it.path.removePrefix(internalPath) }.toMutableList() as ArrayList<String>
+                paths.forEach {
+                    val parts = it.split("/")
+                    var currentString = ""
+                    for (i in 0 until parts.size) {
+                        currentString += "${parts[i]}/"
+
+                        if (!checkedPaths.contains(currentString)) {
+                            val cnt = paths.count { it.startsWith(currentString) }
+                            if (cnt > 50 && currentString.startsWith("/Android/data", true)) {
+                                oftenRepeatedPaths.add(currentString)
+                            }
+                        }
+
+                        checkedPaths.add(currentString)
+                    }
+                }
+
+                val substringToRemove = oftenRepeatedPaths.filter {
+                    val path = it
+                    it == "/" || oftenRepeatedPaths.any { it != path && it.startsWith(path) }
+                }
+
+                oftenRepeatedPaths.removeAll(substringToRemove)
+                oftenRepeatedPaths.forEach {
+                    val file = File("$internalPath/$it")
+                    if (file.exists()) {
+                        config.addExcludedFolder(file.absolutePath)
+                    }
+                }
+            } catch (e: Exception) {
+            }
+        }.start()
+    }
+
     override fun refreshItems() {
         getDirectories()
     }
@@ -1012,55 +1177,11 @@ class MainActivity : SimpleActivity(), DirectoryOperationsListener {
 
     private fun checkWhatsNewDialog() {
         arrayListOf<Release>().apply {
-            add(Release(46, R.string.release_46))
+            add(Release(213, R.string.release_213))
-            add(Release(47, R.string.release_47))
+            add(Release(217, R.string.release_217))
-            add(Release(49, R.string.release_49))
+            add(Release(220, R.string.release_220))
-            add(Release(50, R.string.release_50))
+            add(Release(221, R.string.release_221))
-            add(Release(51, R.string.release_51))
+            add(Release(225, R.string.release_225))
-            add(Release(52, R.string.release_52))
-            add(Release(54, R.string.release_54))
-            add(Release(58, R.string.release_58))
-            add(Release(62, R.string.release_62))
-            add(Release(65, R.string.release_65))
-            add(Release(66, R.string.release_66))
-            add(Release(69, R.string.release_69))
-            add(Release(70, R.string.release_70))
-            add(Release(72, R.string.release_72))
-            add(Release(74, R.string.release_74))
-            add(Release(76, R.string.release_76))
-            add(Release(77, R.string.release_77))
-            add(Release(83, R.string.release_83))
-            add(Release(84, R.string.release_84))
-            add(Release(88, R.string.release_88))
-            add(Release(89, R.string.release_89))
-            add(Release(93, R.string.release_93))
-            add(Release(94, R.string.release_94))
-            add(Release(97, R.string.release_97))
-            add(Release(98, R.string.release_98))
-            add(Release(108, R.string.release_108))
-            add(Release(112, R.string.release_112))
-            add(Release(114, R.string.release_114))
-            add(Release(115, R.string.release_115))
-            add(Release(118, R.string.release_118))
-            add(Release(119, R.string.release_119))
-            add(Release(122, R.string.release_122))
-            add(Release(123, R.string.release_123))
-            add(Release(125, R.string.release_125))
-            add(Release(127, R.string.release_127))
-            add(Release(133, R.string.release_133))
-            add(Release(136, R.string.release_136))
-            add(Release(137, R.string.release_137))
-            add(Release(138, R.string.release_138))
-            add(Release(143, R.string.release_143))
-            add(Release(158, R.string.release_158))
-            add(Release(159, R.string.release_159))
-            add(Release(163, R.string.release_163))
-            add(Release(177, R.string.release_177))
-            add(Release(178, R.string.release_178))
-            add(Release(180, R.string.release_180))
-            add(Release(181, R.string.release_181))
-            add(Release(182, R.string.release_182))
-            add(Release(184, R.string.release_184))
             checkWhatsNew(this, BuildConfig.VERSION_CODE)
         }
     }

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/MediaActivity.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.activities
+package com.simplemobiletools.gallery.pro.activities
 
 import android.app.Activity
 import android.app.SearchManager
@@ -9,42 +9,39 @@ import android.graphics.Bitmap
 import android.net.Uri
 import android.os.Bundle
 import android.os.Handler
-import android.support.v4.view.MenuItemCompat
-import android.support.v7.widget.GridLayoutManager
-import android.support.v7.widget.SearchView
 import android.view.Menu
 import android.view.MenuItem
 import android.view.ViewGroup
 import android.widget.FrameLayout
+import androidx.appcompat.widget.SearchView
+import androidx.core.view.MenuItemCompat
+import androidx.recyclerview.widget.GridLayoutManager
+import androidx.recyclerview.widget.RecyclerView
 import com.bumptech.glide.Glide
 import com.bumptech.glide.request.RequestOptions
 import com.bumptech.glide.request.target.SimpleTarget
 import com.bumptech.glide.request.transition.Transition
 import com.simplemobiletools.commons.dialogs.ConfirmationDialog
-import com.simplemobiletools.commons.dialogs.RadioGroupDialog
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.OTG_PATH
 import com.simplemobiletools.commons.helpers.PERMISSION_WRITE_STORAGE
 import com.simplemobiletools.commons.helpers.REQUEST_EDIT_IMAGE
 import com.simplemobiletools.commons.models.FileDirItem
-import com.simplemobiletools.commons.models.RadioItem
 import com.simplemobiletools.commons.views.MyGridLayoutManager
 import com.simplemobiletools.commons.views.MyRecyclerView
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.adapters.MediaAdapter
+import com.simplemobiletools.gallery.pro.adapters.MediaAdapter
-import com.simplemobiletools.gallery.asynctasks.GetMediaAsynctask
+import com.simplemobiletools.gallery.pro.asynctasks.GetMediaAsynctask
-import com.simplemobiletools.gallery.dialogs.ChangeGroupingDialog
+import com.simplemobiletools.gallery.pro.databases.GalleryDatabase
-import com.simplemobiletools.gallery.dialogs.ChangeSortingDialog
+import com.simplemobiletools.gallery.pro.dialogs.*
-import com.simplemobiletools.gallery.dialogs.ExcludeFolderDialog
+import com.simplemobiletools.gallery.pro.extensions.*
-import com.simplemobiletools.gallery.dialogs.FilterMediaDialog
+import com.simplemobiletools.gallery.pro.helpers.*
-import com.simplemobiletools.gallery.extensions.*
+import com.simplemobiletools.gallery.pro.interfaces.DirectoryDao
-import com.simplemobiletools.gallery.helpers.*
+import com.simplemobiletools.gallery.pro.interfaces.MediaOperationsListener
-import com.simplemobiletools.gallery.interfaces.DirectoryDao
+import com.simplemobiletools.gallery.pro.interfaces.MediumDao
-import com.simplemobiletools.gallery.interfaces.MediaOperationsListener
+import com.simplemobiletools.gallery.pro.models.Medium
-import com.simplemobiletools.gallery.interfaces.MediumDao
+import com.simplemobiletools.gallery.pro.models.ThumbnailItem
-import com.simplemobiletools.gallery.models.Medium
+import com.simplemobiletools.gallery.pro.models.ThumbnailSection
-import com.simplemobiletools.gallery.models.ThumbnailItem
-import com.simplemobiletools.gallery.models.ThumbnailSection
 import kotlinx.android.synthetic.main.activity_media.*
 import java.io.File
 import java.io.IOException
@@ -116,6 +113,8 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
         media_empty_text.setOnClickListener {
             showFilterMediaDialog()
         }
+
+        updateWidgets()
     }
 
     override fun onStart() {
@@ -154,7 +153,7 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
         media_horizontal_fastscroller.allowBubbleDisplay = config.showInfoBubble
         media_vertical_fastscroller.allowBubbleDisplay = config.showInfoBubble
         media_refresh_layout.isEnabled = config.enablePullToRefresh
-        tryloadGallery()
+        tryLoadGallery()
         invalidateOptionsMenu()
         media_empty_text_label.setTextColor(config.textColor)
         media_empty_text.setTextColor(getAdjustedPrimaryColor())
@@ -191,6 +190,7 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
         if (config.showAll && !isChangingConfigurations) {
             config.temporarilyShowHidden = false
             config.tempSkipDeleteConfirmation = false
+            GalleryDatabase.destroyInstance()
         }
 
         mTempShowHiddenHandler.removeCallbacksAndMessages(null)
@@ -219,10 +219,10 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
             findItem(R.id.temporarily_show_hidden).isVisible = !config.shouldShowHidden
             findItem(R.id.stop_showing_hidden).isVisible = config.temporarilyShowHidden
 
-            findItem(R.id.increase_column_count).isVisible = config.viewTypeFiles == VIEW_TYPE_GRID && config.mediaColumnCnt < MAX_COLUMN_COUNT
+            val viewType = config.getFolderViewType(if (mShowAll) SHOW_ALL else mPath)
-            findItem(R.id.reduce_column_count).isVisible = config.viewTypeFiles == VIEW_TYPE_GRID && config.mediaColumnCnt > 1
+            findItem(R.id.increase_column_count).isVisible = viewType == VIEW_TYPE_GRID && config.mediaColumnCnt < MAX_COLUMN_COUNT
-
+            findItem(R.id.reduce_column_count).isVisible = viewType == VIEW_TYPE_GRID && config.mediaColumnCnt > 1
-            findItem(R.id.toggle_filename).isVisible = config.viewTypeFiles == VIEW_TYPE_GRID
+            findItem(R.id.toggle_filename).isVisible = viewType == VIEW_TYPE_GRID
         }
 
         setupSearch(menu)
@@ -248,6 +248,7 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
             R.id.stop_showing_hidden -> tryToggleTemporarilyShowHidden()
             R.id.increase_column_count -> increaseColumnCount()
             R.id.reduce_column_count -> reduceColumnCount()
+            R.id.slideshow -> startSlideshow()
             R.id.settings -> launchSettings()
             R.id.about -> launchAbout()
             else -> return super.onOptionsItemSelected(item)
@@ -255,6 +256,19 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
         return true
     }
 
+    private fun startSlideshow() {
+        if (mMedia.isNotEmpty()) {
+            Intent(this, ViewPagerActivity::class.java).apply {
+                val item = mMedia.firstOrNull { it is Medium } as? Medium
+                        ?: return
+                putExtra(PATH, item.path)
+                putExtra(SHOW_ALL, mShowAll)
+                putExtra(SLIDESHOW_START_ON_ENTER, true)
+                startActivity(this)
+            }
+        }
+    }
+
     private fun storeStateVariables() {
         config.apply {
             mStoredAnimateGifs = animateGifs
@@ -306,6 +320,7 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
 
     private fun searchQueryChanged(text: String) {
         Thread {
+            try {
                 val filtered = mMedia.filter { it is Medium && it.name.contains(text, true) } as ArrayList
                 filtered.sortBy { it is Medium && !it.name.startsWith(text, true) }
                 val grouped = MediaFetcher(applicationContext).groupMedia(filtered as ArrayList<Medium>, mPath)
@@ -313,16 +328,18 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
                     getMediaAdapter()?.updateMedia(grouped)
                     measureRecyclerViewContent(grouped)
                 }
+            } catch (ignored: Exception) {
+            }
         }.start()
     }
 
-    private fun tryloadGallery() {
+    private fun tryLoadGallery() {
         handlePermission(PERMISSION_WRITE_STORAGE) {
             if (it) {
                 val dirName = when {
                     mPath == FAVORITES -> getString(R.string.favorites)
                     mPath == RECYCLE_BIN -> getString(R.string.recycle_bin)
-                    mPath == OTG_PATH -> getString(R.string.otg)
+                    mPath == OTG_PATH -> getString(R.string.usb)
                     mPath.startsWith(OTG_PATH) -> mPath.trimEnd('/').substringAfterLast('/')
                     else -> getHumanizedFilename(mPath)
                 }
@@ -348,7 +365,7 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
             initZoomListener()
             val fastscroller = if (config.scrollHorizontally) media_horizontal_fastscroller else media_vertical_fastscroller
             MediaAdapter(this, mMedia.clone() as ArrayList<ThumbnailItem>, this, mIsGetImageIntent || mIsGetVideoIntent || mIsGetAnyIntent,
-                    mAllowPickingMultiple, media_grid, fastscroller) {
+                    mAllowPickingMultiple, mPath, media_grid, fastscroller) {
                 if (it is Medium) {
                     itemClicked(it.path)
                 }
@@ -366,7 +383,8 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
     }
 
     private fun setupScrollDirection() {
-        val allowHorizontalScroll = config.scrollHorizontally && config.viewTypeFiles == VIEW_TYPE_GRID
+        val viewType = config.getFolderViewType(if (mShowAll) SHOW_ALL else mPath)
+        val allowHorizontalScroll = config.scrollHorizontally && viewType == VIEW_TYPE_GRID
         media_vertical_fastscroller.isHorizontal = false
         media_vertical_fastscroller.beGoneIf(allowHorizontalScroll)
 
@@ -397,7 +415,7 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
     }
 
     private fun checkLastMediaChanged() {
-        if (isActivityDestroyed()) {
+        if (isDestroyed) {
             return
         }
 
@@ -474,12 +492,7 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
     }
 
     private fun changeViewType() {
-        val items = arrayListOf(
+        ChangeViewTypeDialog(this, false, mPath) {
-                RadioItem(VIEW_TYPE_GRID, getString(R.string.grid)),
-                RadioItem(VIEW_TYPE_LIST, getString(R.string.list)))
-
-        RadioGroupDialog(this, items, config.viewTypeFiles) {
-            config.viewTypeFiles = it as Int
             invalidateOptionsMenu()
             setupLayoutManager()
             media_grid.adapter = null
@@ -545,7 +558,9 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
         }
 
         mIsGettingMedia = true
-        if (!mLoadedInitialPhotos) {
+        if (mLoadedInitialPhotos) {
+            startAsyncTask()
+        } else {
             getCachedMedia(mPath, mIsGetVideoIntent, mIsGetImageIntent, mMediumDao) {
                 if (it.isEmpty()) {
                     runOnUiThread {
@@ -556,9 +571,6 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
                 }
                 startAsyncTask()
             }
-        } else {
-            media_refresh_layout.isRefreshing = true
-            startAsyncTask()
         }
 
         mLoadedInitialPhotos = true
@@ -568,7 +580,15 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
         mCurrAsyncTask?.stopFetching()
         mCurrAsyncTask = GetMediaAsynctask(applicationContext, mPath, mIsGetImageIntent, mIsGetVideoIntent, mShowAll) {
             Thread {
-                gotMedia(it)
+                val oldMedia = mMedia.clone() as ArrayList<ThumbnailItem>
+                val newMedia = it
+                gotMedia(newMedia, false)
+                try {
+                    oldMedia.filter { !newMedia.contains(it) }.mapNotNull { it as? Medium }.filter { !File(it.path).exists() }.forEach {
+                        mMediumDao.deleteMediumPath(it.path)
+                    }
+                } catch (e: Exception) {
+                }
             }.start()
         }
 
@@ -619,7 +639,8 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
     }
 
     private fun setupLayoutManager() {
-        if (config.viewTypeFiles == VIEW_TYPE_GRID) {
+        val viewType = config.getFolderViewType(if (mShowAll) SHOW_ALL else mPath)
+        if (viewType == VIEW_TYPE_GRID) {
             setupGridLayoutManager()
         } else {
             setupListLayoutManager()
@@ -629,10 +650,10 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
     private fun setupGridLayoutManager() {
         val layoutManager = media_grid.layoutManager as MyGridLayoutManager
         if (config.scrollHorizontally) {
-            layoutManager.orientation = GridLayoutManager.HORIZONTAL
+            layoutManager.orientation = RecyclerView.HORIZONTAL
             media_refresh_layout.layoutParams = FrameLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.MATCH_PARENT)
         } else {
-            layoutManager.orientation = GridLayoutManager.VERTICAL
+            layoutManager.orientation = RecyclerView.VERTICAL
             media_refresh_layout.layoutParams = FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)
         }
 
@@ -672,8 +693,7 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
         val pathToCheck = if (mPath.isEmpty()) SHOW_ALL else mPath
         val hasSections = config.getFolderGrouping(pathToCheck) and GROUP_BY_NONE == 0 && !config.scrollHorizontally
         val sectionTitleHeight = if (hasSections) layoutManager.getChildAt(0)?.height ?: 0 else 0
-        val thumbnailHeight = if (hasSections) layoutManager.getChildAt(1)?.height ?: 0 else layoutManager.getChildAt(0)?.height
+        val thumbnailHeight = if (hasSections) layoutManager.getChildAt(1)?.height ?: 0 else layoutManager.getChildAt(0)?.height ?: 0
-                ?: 0
 
         var fullHeight = 0
         var curSectionItems = 0
@@ -696,7 +716,8 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
     }
 
     private fun initZoomListener() {
-        if (config.viewTypeFiles == VIEW_TYPE_GRID) {
+        val viewType = config.getFolderViewType(if (mShowAll) SHOW_ALL else mPath)
+        if (viewType == VIEW_TYPE_GRID) {
             val layoutManager = media_grid.layoutManager as MyGridLayoutManager
             mZoomListener = object : MyRecyclerView.MyZoomListener {
                 override fun zoomIn() {
@@ -721,7 +742,7 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
     private fun setupListLayoutManager() {
         val layoutManager = media_grid.layoutManager as MyGridLayoutManager
         layoutManager.spanCount = 1
-        layoutManager.orientation = GridLayoutManager.VERTICAL
+        layoutManager.orientation = RecyclerView.VERTICAL
         media_refresh_layout.layoutParams = FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)
         mZoomListener = null
     }
@@ -803,7 +824,7 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
         }
     }
 
-    private fun gotMedia(media: ArrayList<ThumbnailItem>, isFromCache: Boolean = false) {
+    private fun gotMedia(media: ArrayList<ThumbnailItem>, isFromCache: Boolean) {
         mIsGettingMedia = false
         checkLastMediaChanged()
         mMedia = media
@@ -814,7 +835,8 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
             media_empty_text.beVisibleIf(media.isEmpty() && !isFromCache)
             media_grid.beVisibleIf(media_empty_text_label.isGone())
 
-            val allowHorizontalScroll = config.scrollHorizontally && config.viewTypeFiles == VIEW_TYPE_GRID
+            val viewType = config.getFolderViewType(if (mShowAll) SHOW_ALL else mPath)
+            val allowHorizontalScroll = config.scrollHorizontally && viewType == VIEW_TYPE_GRID
             media_vertical_fastscroller.beVisibleIf(media_grid.isVisible() && !allowHorizontalScroll)
             media_horizontal_fastscroller.beVisibleIf(media_grid.isVisible() && allowHorizontalScroll)
             setupAdapter()
@@ -832,11 +854,15 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
     }
 
     override fun tryDeleteFiles(fileDirItems: ArrayList<FileDirItem>) {
-        val filtered = fileDirItems.filter { it.path.isMediaFile() } as ArrayList
+        val filtered = fileDirItems.filter { File(it.path).isFile && it.path.isMediaFile() } as ArrayList
-        val deletingItems = resources.getQuantityString(R.plurals.deleting_items, filtered.size, filtered.size)
+        if (filtered.isEmpty()) {
-        toast(deletingItems)
+            return
+        }
+
+        if (config.useRecycleBin && !filtered.first().path.startsWith(recycleBinPath)) {
+            val movingItems = resources.getQuantityString(R.plurals.moving_items_into_bin, filtered.size, filtered.size)
+            toast(movingItems)
 
-        if (config.useRecycleBin && !filtered.first().path.startsWith(filesDir.absolutePath)) {
             movePathsInRecycleBin(filtered.map { it.path } as ArrayList<String>, mMediumDao) {
                 if (it) {
                     deleteFilteredFiles(filtered)
@@ -845,6 +871,8 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
                 }
             }
         } else {
+            val deletingItems = resources.getQuantityString(R.plurals.deleting_items, filtered.size, filtered.size)
+            toast(deletingItems)
             deleteFilteredFiles(filtered)
         }
     }
@@ -861,8 +889,8 @@ class MediaActivity : SimpleActivity(), MediaOperationsListener {
             Thread {
                 val useRecycleBin = config.useRecycleBin
                 filtered.forEach {
-                    if (!useRecycleBin) {
+                    if (it.path.startsWith(recycleBinPath) || !useRecycleBin) {
-                        mMediumDao.deleteMediumPath(it.path)
+                        deleteDBPath(mMediumDao, it.path)
                     }
                 }
             }.start()

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/PanoramaPhotoActivity.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.activities
+package com.simplemobiletools.gallery.pro.activities
 
 import android.content.res.Configuration
 import android.graphics.Bitmap
@@ -11,18 +11,19 @@ import android.widget.RelativeLayout
 import com.google.vr.sdk.widgets.pano.VrPanoramaEventListener
 import com.google.vr.sdk.widgets.pano.VrPanoramaView
 import com.simplemobiletools.commons.extensions.beVisible
+import com.simplemobiletools.commons.extensions.onGlobalLayout
 import com.simplemobiletools.commons.extensions.showErrorToast
 import com.simplemobiletools.commons.extensions.toast
 import com.simplemobiletools.commons.helpers.PERMISSION_WRITE_STORAGE
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.extensions.*
+import com.simplemobiletools.gallery.pro.extensions.*
-import com.simplemobiletools.gallery.helpers.PATH
+import com.simplemobiletools.gallery.pro.helpers.PATH
-import kotlinx.android.synthetic.main.activity_panorama.*
+import kotlinx.android.synthetic.main.activity_panorama_photo.*
 
-open class PanoramaActivity : SimpleActivity() {
+open class PanoramaPhotoActivity : SimpleActivity() {
     private val CARDBOARD_DISPLAY_MODE = 3
 
-    private var isFullScreen = false
+    private var isFullscreen = false
     private var isExploreEnabled = true
     private var isRendering = false
 
@@ -30,8 +31,10 @@ open class PanoramaActivity : SimpleActivity() {
         useDynamicTheme = false
         requestWindowFeature(Window.FEATURE_NO_TITLE)
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_panorama)
+        setContentView(R.layout.activity_panorama_photo)
         supportActionBar?.hide()
+
+        checkNotchSupport()
         setupButtonMargins()
 
         cardboard.setOnClickListener {
@@ -61,6 +64,8 @@ open class PanoramaActivity : SimpleActivity() {
         if (config.blackBackground) {
             updateStatusbarColor(Color.BLACK)
         }
+
+        window.statusBarColor = resources.getColor(R.color.circle_black_background)
     }
 
     override fun onPause() {
@@ -97,11 +102,6 @@ open class PanoramaActivity : SimpleActivity() {
                         loadImageFromBitmap(bitmap, options)
                         setFlingingEnabled(true)
                         setPureTouchTracking(true)
-                        setEventListener(object : VrPanoramaEventListener() {
-                            override fun onClick() {
-                                handleClick()
-                            }
-                        })
 
                         // add custom buttons so we can position them and toggle visibility as desired
                         setFullscreenButtonEnabled(false)
@@ -112,6 +112,12 @@ open class PanoramaActivity : SimpleActivity() {
                         setOnClickListener {
                             handleClick()
                         }
+
+                        setEventListener(object : VrPanoramaEventListener() {
+                            override fun onClick() {
+                                handleClick()
+                            }
+                        })
                     }
                 }
             }.start()
@@ -120,7 +126,7 @@ open class PanoramaActivity : SimpleActivity() {
         }
 
         window.decorView.setOnSystemUiVisibilityChangeListener { visibility ->
-            isFullScreen = visibility and View.SYSTEM_UI_FLAG_FULLSCREEN != 0
+            isFullscreen = visibility and View.SYSTEM_UI_FLAG_FULLSCREEN != 0
             toggleButtonVisibility()
         }
     }
@@ -148,26 +154,30 @@ open class PanoramaActivity : SimpleActivity() {
     }
 
     private fun setupButtonMargins() {
+        val navBarHeight = navigationBarHeight
         (cardboard.layoutParams as RelativeLayout.LayoutParams).apply {
-            bottomMargin = navigationBarHeight
+            bottomMargin = navBarHeight
             rightMargin = navigationBarWidth
         }
 
         (explore.layoutParams as RelativeLayout.LayoutParams).bottomMargin = navigationBarHeight
+
+        cardboard.onGlobalLayout {
+            panorama_gradient_background.layoutParams.height = navBarHeight + cardboard.height
+        }
     }
 
     private fun toggleButtonVisibility() {
-        cardboard.animate().alpha(if (isFullScreen) 0f else 1f)
+        arrayOf(cardboard, explore, panorama_gradient_background).forEach {
-        cardboard.isClickable = !isFullScreen
+            it.animate().alpha(if (isFullscreen) 0f else 1f)
-
+            it.isClickable = !isFullscreen
-        explore.animate().alpha(if (isFullScreen) 0f else 1f)
+        }
-        explore.isClickable = !isFullScreen
     }
 
     private fun handleClick() {
-        isFullScreen = !isFullScreen
+        isFullscreen = !isFullscreen
         toggleButtonVisibility()
-        if (isFullScreen) {
+        if (isFullscreen) {
             hideSystemUI(false)
         } else {
             showSystemUI(false)

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/PanoramaVideoActivity.kt

@@ -0,0 +1,322 @@
+package com.simplemobiletools.gallery.pro.activities
+
+import android.content.res.Configuration
+import android.graphics.Color
+import android.net.Uri
+import android.os.Bundle
+import android.os.Handler
+import android.view.View
+import android.view.Window
+import android.view.WindowManager
+import android.widget.RelativeLayout
+import android.widget.SeekBar
+import com.google.vr.sdk.widgets.video.VrVideoEventListener
+import com.google.vr.sdk.widgets.video.VrVideoView
+import com.simplemobiletools.commons.extensions.*
+import com.simplemobiletools.commons.helpers.PERMISSION_WRITE_STORAGE
+import com.simplemobiletools.gallery.pro.R
+import com.simplemobiletools.gallery.pro.extensions.*
+import com.simplemobiletools.gallery.pro.helpers.MIN_SKIP_LENGTH
+import com.simplemobiletools.gallery.pro.helpers.PATH
+import kotlinx.android.synthetic.main.activity_panorama_video.*
+import kotlinx.android.synthetic.main.bottom_video_time_holder.*
+import java.io.File
+
+open class PanoramaVideoActivity : SimpleActivity(), SeekBar.OnSeekBarChangeListener {
+    private val CARDBOARD_DISPLAY_MODE = 3
+
+    private var mIsFullscreen = false
+    private var mIsExploreEnabled = true
+    private var mIsRendering = false
+    private var mIsPlaying = false
+    private var mIsDragged = false
+    private var mPlayOnReady = false
+    private var mDuration = 0
+    private var mCurrTime = 0
+
+    private var mTimerHandler = Handler()
+
+    public override fun onCreate(savedInstanceState: Bundle?) {
+        useDynamicTheme = false
+        requestWindowFeature(Window.FEATURE_NO_TITLE)
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_panorama_video)
+        supportActionBar?.hide()
+
+        checkNotchSupport()
+        handlePermission(PERMISSION_WRITE_STORAGE) {
+            if (it) {
+                checkIntent()
+            } else {
+                toast(R.string.no_storage_permissions)
+                finish()
+            }
+        }
+    }
+
+    override fun onResume() {
+        super.onResume()
+        vr_video_view.resumeRendering()
+        mIsRendering = true
+        if (config.blackBackground) {
+            updateStatusbarColor(Color.BLACK)
+        }
+
+        window.statusBarColor = resources.getColor(R.color.circle_black_background)
+    }
+
+    override fun onPause() {
+        super.onPause()
+        vr_video_view.pauseRendering()
+        mIsRendering = false
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        if (mIsRendering) {
+            vr_video_view.shutdown()
+        }
+
+        if (!isChangingConfigurations) {
+            mTimerHandler.removeCallbacksAndMessages(null)
+        }
+    }
+
+    private fun checkIntent() {
+        val path = intent.getStringExtra(PATH)
+        if (path == null) {
+            toast(R.string.invalid_image_path)
+            finish()
+            return
+        }
+
+        setupButtons()
+        intent.removeExtra(PATH)
+
+        video_curr_time.setOnClickListener { skip(false) }
+        video_duration.setOnClickListener { skip(true) }
+
+        try {
+            val options = VrVideoView.Options()
+            options.inputType = VrVideoView.Options.TYPE_MONO
+
+            vr_video_view.apply {
+                loadVideo(Uri.fromFile(File(path)), options)
+                pauseVideo()
+
+                setFlingingEnabled(true)
+                setPureTouchTracking(true)
+
+                // add custom buttons so we can position them and toggle visibility as desired
+                setFullscreenButtonEnabled(false)
+                setInfoButtonEnabled(false)
+                setTransitionViewEnabled(false)
+                setStereoModeButtonEnabled(false)
+
+                setOnClickListener {
+                    handleClick()
+                }
+
+                setEventListener(object : VrVideoEventListener() {
+                    override fun onClick() {
+                        handleClick()
+                    }
+
+                    override fun onLoadSuccess() {
+                        if (mDuration == 0) {
+                            setupDuration(duration)
+                            setupTimer()
+                        }
+
+                        if (mPlayOnReady || config.autoplayVideos) {
+                            mPlayOnReady = false
+                            mIsPlaying = true
+                            resumeVideo()
+                        } else {
+                            video_toggle_play_pause.setImageResource(R.drawable.ic_play_outline)
+                        }
+                        video_toggle_play_pause.beVisible()
+                    }
+
+                    override fun onCompletion() {
+                        videoCompleted()
+                    }
+                })
+            }
+
+            video_toggle_play_pause.setOnClickListener {
+                togglePlayPause()
+            }
+        } catch (e: Exception) {
+            showErrorToast(e)
+        }
+
+        window.decorView.setOnSystemUiVisibilityChangeListener { visibility ->
+            mIsFullscreen = visibility and View.SYSTEM_UI_FLAG_FULLSCREEN != 0
+            toggleButtonVisibility()
+        }
+    }
+
+    override fun onConfigurationChanged(newConfig: Configuration?) {
+        super.onConfigurationChanged(newConfig)
+        setupButtons()
+    }
+
+    private fun setupDuration(duration: Long) {
+        mDuration = (duration / 1000).toInt()
+        video_seekbar.max = mDuration
+        video_duration.text = mDuration.getFormattedDuration()
+        setVideoProgress(0)
+    }
+
+    private fun setupTimer() {
+        runOnUiThread(object : Runnable {
+            override fun run() {
+                if (mIsPlaying && !mIsDragged) {
+                    mCurrTime = (vr_video_view!!.currentPosition / 1000).toInt()
+                    video_seekbar.progress = mCurrTime
+                    video_curr_time.text = mCurrTime.getFormattedDuration()
+                }
+
+                mTimerHandler.postDelayed(this, 1000)
+            }
+        })
+    }
+
+    private fun togglePlayPause() {
+        mIsPlaying = !mIsPlaying
+        if (mIsPlaying) {
+            resumeVideo()
+        } else {
+            pauseVideo()
+        }
+    }
+
+    private fun resumeVideo() {
+        video_toggle_play_pause.setImageResource(R.drawable.ic_pause_outline)
+        if (mCurrTime == mDuration) {
+            setVideoProgress(0)
+            mPlayOnReady = true
+            return
+        }
+
+        vr_video_view.playVideo()
+        window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+    }
+
+    private fun pauseVideo() {
+        vr_video_view.pauseVideo()
+        video_toggle_play_pause.setImageResource(R.drawable.ic_play_outline)
+        window.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+    }
+
+    private fun setVideoProgress(seconds: Int) {
+        vr_video_view.seekTo(seconds * 1000L)
+        video_seekbar.progress = seconds
+        mCurrTime = seconds
+        video_curr_time.text = seconds.getFormattedDuration()
+    }
+
+    private fun videoCompleted() {
+        mIsPlaying = false
+        mCurrTime = (vr_video_view.duration / 1000).toInt()
+        video_seekbar.progress = video_seekbar.max
+        video_curr_time.text = mDuration.getFormattedDuration()
+        pauseVideo()
+    }
+
+    private fun setupButtons() {
+        var right = 0
+        var bottom = 0
+
+        if (hasNavBar()) {
+            if (resources.configuration.orientation == Configuration.ORIENTATION_PORTRAIT) {
+                bottom += navigationBarHeight
+            } else {
+                right += navigationBarWidth
+                bottom += navigationBarHeight
+            }
+        }
+
+        video_time_holder.setPadding(0, 0, right, bottom)
+        video_time_holder.background = resources.getDrawable(R.drawable.gradient_background)
+        video_time_holder.onGlobalLayout {
+            val newBottomMargin = video_time_holder.height - resources.getDimension(R.dimen.video_player_play_pause_size).toInt() - resources.getDimension(R.dimen.activity_margin).toInt()
+            (explore.layoutParams as RelativeLayout.LayoutParams).bottomMargin = newBottomMargin
+
+            (cardboard.layoutParams as RelativeLayout.LayoutParams).apply {
+                bottomMargin = newBottomMargin
+                rightMargin = navigationBarWidth
+            }
+            explore.requestLayout()
+        }
+        video_toggle_play_pause.setImageResource(R.drawable.ic_play_outline)
+
+        cardboard.setOnClickListener {
+            vr_video_view.displayMode = CARDBOARD_DISPLAY_MODE
+        }
+
+        explore.setOnClickListener {
+            mIsExploreEnabled = !mIsExploreEnabled
+            vr_video_view.setPureTouchTracking(mIsExploreEnabled)
+            explore.setImageResource(if (mIsExploreEnabled) R.drawable.ic_explore else R.drawable.ic_explore_off)
+        }
+    }
+
+    private fun toggleButtonVisibility() {
+        val newAlpha = if (mIsFullscreen) 0f else 1f
+        arrayOf(cardboard, explore).forEach {
+            it.animate().alpha(newAlpha)
+        }
+
+        arrayOf(cardboard, explore, video_toggle_play_pause, video_curr_time, video_duration).forEach {
+            it.isClickable = !mIsFullscreen
+        }
+
+        video_seekbar.setOnSeekBarChangeListener(if (mIsFullscreen) null else this)
+        video_time_holder.animate().alpha(newAlpha).start()
+    }
+
+    private fun handleClick() {
+        mIsFullscreen = !mIsFullscreen
+        toggleButtonVisibility()
+        if (mIsFullscreen) {
+            hideSystemUI(false)
+        } else {
+            showSystemUI(false)
+        }
+    }
+
+    private fun skip(forward: Boolean) {
+        if (forward && mCurrTime == mDuration) {
+            return
+        }
+
+        val curr = vr_video_view.currentPosition
+        val twoPercents = Math.max((vr_video_view.duration / 50).toInt(), MIN_SKIP_LENGTH)
+        val newProgress = if (forward) curr + twoPercents else curr - twoPercents
+        val roundProgress = Math.round(newProgress / 1000f)
+        val limitedProgress = Math.max(Math.min(vr_video_view.duration.toInt(), roundProgress), 0)
+        setVideoProgress(limitedProgress)
+        if (!mIsPlaying) {
+            togglePlayPause()
+        }
+    }
+
+    override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
+        if (fromUser) {
+            setVideoProgress(progress)
+        }
+    }
+
+    override fun onStartTrackingTouch(seekBar: SeekBar?) {
+        vr_video_view.pauseVideo()
+        mIsDragged = true
+    }
+
+    override fun onStopTrackingTouch(seekBar: SeekBar?) {
+        mIsPlaying = true
+        resumeVideo()
+        mIsDragged = false
+    }
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/PhotoActivity.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.activities
+package com.simplemobiletools.gallery.pro.activities
 
 import android.os.Bundle
 

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/PhotoVideoActivity.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.activities
+package com.simplemobiletools.gallery.pro.activities
 
 import android.content.Intent
 import android.content.res.Configuration
@@ -14,19 +14,20 @@ import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.IS_FROM_GALLERY
 import com.simplemobiletools.commons.helpers.PERMISSION_WRITE_STORAGE
 import com.simplemobiletools.commons.helpers.REAL_FILE_PATH
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.BuildConfig
-import com.simplemobiletools.gallery.extensions.*
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.fragments.PhotoFragment
+import com.simplemobiletools.gallery.pro.extensions.*
-import com.simplemobiletools.gallery.fragments.VideoFragment
+import com.simplemobiletools.gallery.pro.fragments.PhotoFragment
-import com.simplemobiletools.gallery.fragments.ViewPagerFragment
+import com.simplemobiletools.gallery.pro.fragments.VideoFragment
-import com.simplemobiletools.gallery.helpers.*
+import com.simplemobiletools.gallery.pro.fragments.ViewPagerFragment
-import com.simplemobiletools.gallery.models.Medium
+import com.simplemobiletools.gallery.pro.helpers.*
+import com.simplemobiletools.gallery.pro.models.Medium
 import kotlinx.android.synthetic.main.bottom_actions.*
 import kotlinx.android.synthetic.main.fragment_holder.*
 import java.io.File
+import java.io.FileInputStream
 
 open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentListener {
-
     private var mMedium: Medium? = null
     private var mIsFullScreen = false
     private var mIsFromGallery = false
@@ -38,7 +39,6 @@ open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentList
     public override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.fragment_holder)
-        setTranslucentNavigation()
 
         handlePermission(PERMISSION_WRITE_STORAGE) {
             if (it) {
@@ -52,7 +52,15 @@ open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentList
 
     override fun onResume() {
         super.onResume()
-        supportActionBar?.setBackgroundDrawable(resources.getDrawable(R.drawable.actionbar_gradient_background))
+        supportActionBar?.setBackgroundDrawable(ColorDrawable(Color.TRANSPARENT))
+        window.statusBarColor = Color.TRANSPARENT
+
+        if (config.bottomActions) {
+            window.navigationBarColor = Color.TRANSPARENT
+        } else {
+            setTranslucentNavigation()
+        }
+
         if (config.blackBackground) {
             updateStatusbarColor(Color.BLACK)
         }
@@ -60,22 +68,36 @@ open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentList
 
     private fun checkIntent(savedInstanceState: Bundle? = null) {
         mUri = intent.data ?: return
-        if (intent.extras?.containsKey(REAL_FILE_PATH) == true) {
+        var filename = getFilenameFromUri(mUri!!)
-            val realPath = intent.extras.getString(REAL_FILE_PATH)
+        mIsFromGallery = intent.getBooleanExtra(IS_FROM_GALLERY, false)
-            sendViewPagerIntent(realPath)
+        if (mIsFromGallery && filename.isVideoFast() && config.openVideosOnSeparateScreen) {
-            finish()
+            launchVideoPlayer()
             return
         }
 
-        mIsFromGallery = intent.getBooleanExtra(IS_FROM_GALLERY, false)
+        if (intent.extras?.containsKey(REAL_FILE_PATH) == true) {
+            val realPath = intent.extras.getString(REAL_FILE_PATH)
+            if (realPath != null) {
+                if (realPath.getFilenameFromPath().contains('.') || filename.contains('.')) {
+                    sendViewPagerIntent(realPath)
+                    finish()
+                    return
+                } else {
+                    filename = realPath.getFilenameFromPath()
+                }
+            }
+        }
+
         if (mUri!!.scheme == "file") {
+            if (filename.contains('.')) {
                 scanPathRecursively(mUri!!.path)
                 sendViewPagerIntent(mUri!!.path)
                 finish()
                 return
+            }
         } else {
             val path = applicationContext.getRealPathFromURI(mUri!!) ?: ""
-            if (path != mUri.toString() && path.isNotEmpty() && mUri!!.authority != "mms") {
+            if (path != mUri.toString() && path.isNotEmpty() && mUri!!.authority != "mms" && filename.contains('.')) {
                 scanPathRecursively(mUri!!.path)
                 sendViewPagerIntent(path)
                 finish()
@@ -83,10 +105,10 @@ open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentList
             }
         }
 
+        checkNotchSupport()
         showSystemUI(true)
         val bundle = Bundle()
         val file = File(mUri.toString())
-        val filename = getFilenameFromUri(mUri!!)
         val type = when {
             filename.isVideoFast() -> TYPE_VIDEOS
             filename.isGif() -> TYPE_GIFS
@@ -95,7 +117,8 @@ open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentList
             else -> TYPE_IMAGES
         }
 
-        mMedium = Medium(null, filename, mUri.toString(), mUri!!.path.getParentPath(), 0, 0, file.length(), type, false, 0L)
+        mIsVideo = type == TYPE_VIDEOS
+        mMedium = Medium(null, filename, mUri.toString(), mUri!!.path.getParentPath(), 0, 0, file.length(), type, 0, false, 0L)
         supportActionBar?.title = mMedium!!.name
         bundle.putSerializable(MEDIUM, mMedium)
 
@@ -103,7 +126,7 @@ open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentList
             mFragment = if (mIsVideo) VideoFragment() else PhotoFragment()
             mFragment!!.listener = this
             mFragment!!.arguments = bundle
-            supportFragmentManager.beginTransaction().replace(R.id.fragment_placeholder, mFragment).commit()
+            supportFragmentManager.beginTransaction().replace(R.id.fragment_placeholder, mFragment!!).commit()
         }
 
         if (config.blackBackground) {
@@ -118,6 +141,46 @@ open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentList
         initBottomActions()
     }
 
+    private fun launchVideoPlayer() {
+        val newUri = getFinalUriFromPath(mUri.toString(), BuildConfig.APPLICATION_ID)
+        if (newUri == null) {
+            toast(R.string.unknown_error_occurred)
+            return
+        }
+
+        var isPanorama = false
+        val realPath = intent?.extras?.getString(REAL_FILE_PATH) ?: ""
+        try {
+            if (realPath.isNotEmpty()) {
+                val fis = FileInputStream(File(realPath))
+                parseFileChannel(realPath, fis.channel, 0, 0, 0) {
+                    isPanorama = true
+                }
+            }
+        } catch (ignored: Exception) {
+        } catch (ignored: OutOfMemoryError) {
+        }
+
+        if (isPanorama) {
+            Intent(applicationContext, PanoramaVideoActivity::class.java).apply {
+                putExtra(PATH, realPath)
+                startActivity(this)
+            }
+        } else {
+            val mimeType = getUriMimeType(mUri.toString(), newUri)
+            Intent(applicationContext, VideoPlayerActivity::class.java).apply {
+                setDataAndType(newUri, mimeType)
+                addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT)
+                if (intent.extras != null) {
+                    putExtras(intent.extras!!)
+                }
+
+                startActivity(this)
+            }
+        }
+        finish()
+    }
+
     override fun onConfigurationChanged(newConfig: Configuration?) {
         super.onConfigurationChanged(newConfig)
         initBottomActionsLayout()
@@ -181,7 +244,8 @@ open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentList
     }
 
     private fun initBottomActionButtons() {
-        arrayListOf(bottom_favorite, bottom_delete, bottom_rotate, bottom_properties, bottom_change_orientation, bottom_slideshow, bottom_show_on_map, bottom_toggle_file_visibility).forEach {
+        arrayListOf(bottom_favorite, bottom_delete, bottom_rotate, bottom_properties, bottom_change_orientation, bottom_slideshow, bottom_show_on_map,
+                bottom_toggle_file_visibility, bottom_rename, bottom_copy).forEach {
             it.beGone()
         }
 
@@ -214,8 +278,10 @@ open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentList
             showSystemUI(true)
         }
 
+        val newAlpha = if (mIsFullScreen) 0f else 1f
+        top_shadow.animate().alpha(newAlpha).start()
         if (!bottom_actions.isGone()) {
-            bottom_actions.animate().alpha(if (mIsFullScreen) 0f else 1f).start()
+            bottom_actions.animate().alpha(newAlpha).start()
         }
     }
 
@@ -224,4 +290,6 @@ open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentList
     override fun goToPrevItem() {}
 
     override fun goToNextItem() {}
+
+    override fun launchViewVideoIntent(path: String) {}
 }

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/SetWallpaperActivity.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.activities
+package com.simplemobiletools.gallery.pro.activities
 
 import android.annotation.SuppressLint
 import android.app.Activity
@@ -10,11 +10,10 @@ import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
 import com.simplemobiletools.commons.dialogs.RadioGroupDialog
-import com.simplemobiletools.commons.extensions.isActivityDestroyed
 import com.simplemobiletools.commons.extensions.toast
 import com.simplemobiletools.commons.helpers.isNougatPlus
 import com.simplemobiletools.commons.models.RadioItem
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
 import com.theartofdev.edmodo.cropper.CropImageView
 import kotlinx.android.synthetic.main.activity_set_wallpaper.*
 import kotlinx.android.synthetic.main.bottom_set_wallpaper_actions.*
@@ -113,7 +112,7 @@ class SetWallpaperActivity : SimpleActivity(), CropImageView.OnCropImageComplete
 
     @SuppressLint("NewApi")
     override fun onCropImageComplete(view: CropImageView?, result: CropImageView.CropResult) {
-        if (isActivityDestroyed())
+        if (isDestroyed)
             return
 
         if (result.error == null) {

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/SettingsActivity.kt

@@ -0,0 +1,773 @@
+package com.simplemobiletools.gallery.pro.activities
+
+import android.content.Intent
+import android.os.Bundle
+import android.text.TextUtils
+import com.simplemobiletools.commons.dialogs.ConfirmationDialog
+import com.simplemobiletools.commons.dialogs.FilePickerDialog
+import com.simplemobiletools.commons.dialogs.RadioGroupDialog
+import com.simplemobiletools.commons.dialogs.SecurityDialog
+import com.simplemobiletools.commons.extensions.*
+import com.simplemobiletools.commons.helpers.*
+import com.simplemobiletools.commons.models.RadioItem
+import com.simplemobiletools.gallery.pro.R
+import com.simplemobiletools.gallery.pro.dialogs.ManageBottomActionsDialog
+import com.simplemobiletools.gallery.pro.dialogs.ManageExtendedDetailsDialog
+import com.simplemobiletools.gallery.pro.extensions.config
+import com.simplemobiletools.gallery.pro.extensions.emptyTheRecycleBin
+import com.simplemobiletools.gallery.pro.extensions.galleryDB
+import com.simplemobiletools.gallery.pro.extensions.showRecycleBinEmptyingDialog
+import com.simplemobiletools.gallery.pro.helpers.*
+import kotlinx.android.synthetic.main.activity_settings.*
+import java.io.File
+import java.util.*
+
+class SettingsActivity : SimpleActivity() {
+    private var mRecycleBinContentSize = 0L
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_settings)
+    }
+
+    override fun onResume() {
+        super.onResume()
+        setupSettingItems()
+    }
+
+    private fun setupSettingItems() {
+        setupCustomizeColors()
+        setupUseEnglish()
+        setupManageIncludedFolders()
+        setupManageExcludedFolders()
+        setupManageHiddenFolders()
+        setupShowHiddenItems()
+        setupDoExtraCheck()
+        setupAutoplayVideos()
+        setupRememberLastVideo()
+        setupLoopVideos()
+        setupOpenVideosOnSeparateScreen()
+        setupAnimateGifs()
+        setupMaxBrightness()
+        setupCropThumbnails()
+        setupDarkBackground()
+        setupScrollHorizontally()
+        setupScreenRotation()
+        setupHideSystemUI()
+        setupHiddenItemPasswordProtection()
+        setupAppPasswordProtection()
+        setupFileDeletionPasswordProtection()
+        setupDeleteEmptyFolders()
+        setupAllowPhotoGestures()
+        setupAllowVideoGestures()
+        setupAllowDownGesture()
+        setupShowNotch()
+        setupBottomActions()
+        setupThumbnailVideoDuration()
+        setupShowMediaCount()
+        setupKeepLastModified()
+        setupShowInfoBubble()
+        setupEnablePullToRefresh()
+        setupAllowZoomingImages()
+        setupShowHighestQuality()
+        setupAllowOneToOneZoom()
+        setupAllowInstantChange()
+        setupShowExtendedDetails()
+        setupHideExtendedDetails()
+        setupManageExtendedDetails()
+        setupSkipDeleteConfirmation()
+        setupManageBottomActions()
+        setupUseRecycleBin()
+        setupShowRecycleBin()
+        setupShowRecycleBinLast()
+        setupEmptyRecycleBin()
+        updateTextColors(settings_holder)
+        setupSectionColors()
+        setupExportSettings()
+        setupImportSettings()
+    }
+
+    private fun setupSectionColors() {
+        val adjustedPrimaryColor = getAdjustedPrimaryColor()
+        arrayListOf(visibility_label, videos_label, thumbnails_label, scrolling_label, fullscreen_media_label, security_label,
+                file_operations_label, deep_zoomable_images_label, extended_details_label, bottom_actions_label, recycle_bin_label,
+                migrating_label).forEach {
+            it.setTextColor(adjustedPrimaryColor)
+        }
+    }
+
+    private fun setupCustomizeColors() {
+        settings_customize_colors_holder.setOnClickListener {
+            startCustomizationActivity()
+        }
+    }
+
+    private fun setupUseEnglish() {
+        settings_use_english_holder.beVisibleIf(config.wasUseEnglishToggled || Locale.getDefault().language != "en")
+        settings_use_english.isChecked = config.useEnglish
+        settings_use_english_holder.setOnClickListener {
+            settings_use_english.toggle()
+            config.useEnglish = settings_use_english.isChecked
+            System.exit(0)
+        }
+    }
+
+    private fun setupManageIncludedFolders() {
+        settings_manage_included_folders_holder.setOnClickListener {
+            startActivity(Intent(this, IncludedFoldersActivity::class.java))
+        }
+    }
+
+    private fun setupManageExcludedFolders() {
+        settings_manage_excluded_folders_holder.setOnClickListener {
+            startActivity(Intent(this, ExcludedFoldersActivity::class.java))
+        }
+    }
+
+    private fun setupManageHiddenFolders() {
+        settings_manage_hidden_folders_holder.setOnClickListener {
+            handleHiddenFolderPasswordProtection {
+                startActivity(Intent(this, HiddenFoldersActivity::class.java))
+            }
+        }
+    }
+
+    private fun setupShowHiddenItems() {
+        settings_show_hidden_items.isChecked = config.showHiddenMedia
+        settings_show_hidden_items_holder.setOnClickListener {
+            if (config.showHiddenMedia) {
+                toggleHiddenItems()
+            } else {
+                handleHiddenFolderPasswordProtection {
+                    toggleHiddenItems()
+                }
+            }
+        }
+    }
+
+    private fun toggleHiddenItems() {
+        settings_show_hidden_items.toggle()
+        config.showHiddenMedia = settings_show_hidden_items.isChecked
+    }
+
+    private fun setupDoExtraCheck() {
+        settings_do_extra_check.isChecked = config.doExtraCheck
+        settings_do_extra_check_holder.setOnClickListener {
+            settings_do_extra_check.toggle()
+            config.doExtraCheck = settings_do_extra_check.isChecked
+        }
+    }
+
+    private fun setupAutoplayVideos() {
+        settings_autoplay_videos.isChecked = config.autoplayVideos
+        settings_autoplay_videos_holder.setOnClickListener {
+            settings_autoplay_videos.toggle()
+            config.autoplayVideos = settings_autoplay_videos.isChecked
+        }
+    }
+
+    private fun setupRememberLastVideo() {
+        settings_remember_last_video_position.isChecked = config.rememberLastVideoPosition
+        settings_remember_last_video_position_holder.setOnClickListener {
+            settings_remember_last_video_position.toggle()
+            config.rememberLastVideoPosition = settings_remember_last_video_position.isChecked
+        }
+    }
+
+    private fun setupLoopVideos() {
+        settings_loop_videos.isChecked = config.loopVideos
+        settings_loop_videos_holder.setOnClickListener {
+            settings_loop_videos.toggle()
+            config.loopVideos = settings_loop_videos.isChecked
+        }
+    }
+
+    private fun setupOpenVideosOnSeparateScreen() {
+        settings_open_videos_on_separate_screen.isChecked = config.openVideosOnSeparateScreen
+        settings_open_videos_on_separate_screen_holder.setOnClickListener {
+            settings_open_videos_on_separate_screen.toggle()
+            config.openVideosOnSeparateScreen = settings_open_videos_on_separate_screen.isChecked
+        }
+    }
+
+    private fun setupAnimateGifs() {
+        settings_animate_gifs.isChecked = config.animateGifs
+        settings_animate_gifs_holder.setOnClickListener {
+            settings_animate_gifs.toggle()
+            config.animateGifs = settings_animate_gifs.isChecked
+        }
+    }
+
+    private fun setupMaxBrightness() {
+        settings_max_brightness.isChecked = config.maxBrightness
+        settings_max_brightness_holder.setOnClickListener {
+            settings_max_brightness.toggle()
+            config.maxBrightness = settings_max_brightness.isChecked
+        }
+    }
+
+    private fun setupCropThumbnails() {
+        settings_crop_thumbnails.isChecked = config.cropThumbnails
+        settings_crop_thumbnails_holder.setOnClickListener {
+            settings_crop_thumbnails.toggle()
+            config.cropThumbnails = settings_crop_thumbnails.isChecked
+        }
+    }
+
+    private fun setupThumbnailVideoDuration() {
+        settings_show_thumbnail_video_duration.isChecked = config.showThumbnailVideoDuration
+        settings_show_thumbnail_video_duration_holder.setOnClickListener {
+            settings_show_thumbnail_video_duration.toggle()
+            config.showThumbnailVideoDuration = settings_show_thumbnail_video_duration.isChecked
+        }
+    }
+
+    private fun setupDarkBackground() {
+        settings_black_background.isChecked = config.blackBackground
+        settings_black_background_holder.setOnClickListener {
+            settings_black_background.toggle()
+            config.blackBackground = settings_black_background.isChecked
+        }
+    }
+
+    private fun setupScrollHorizontally() {
+        settings_scroll_horizontally.isChecked = config.scrollHorizontally
+        settings_scroll_horizontally_holder.setOnClickListener {
+            settings_scroll_horizontally.toggle()
+            config.scrollHorizontally = settings_scroll_horizontally.isChecked
+
+            if (config.scrollHorizontally) {
+                config.enablePullToRefresh = false
+                settings_enable_pull_to_refresh.isChecked = false
+            }
+        }
+    }
+
+    private fun setupHideSystemUI() {
+        settings_hide_system_ui.isChecked = config.hideSystemUI
+        settings_hide_system_ui_holder.setOnClickListener {
+            settings_hide_system_ui.toggle()
+            config.hideSystemUI = settings_hide_system_ui.isChecked
+        }
+    }
+
+    private fun setupHiddenItemPasswordProtection() {
+        settings_hidden_item_password_protection.isChecked = config.isHiddenPasswordProtectionOn
+        settings_hidden_item_password_protection_holder.setOnClickListener {
+            val tabToShow = if (config.isHiddenPasswordProtectionOn) config.hiddenProtectionType else SHOW_ALL_TABS
+            SecurityDialog(this, config.hiddenPasswordHash, tabToShow) { hash, type, success ->
+                if (success) {
+                    val hasPasswordProtection = config.isHiddenPasswordProtectionOn
+                    settings_hidden_item_password_protection.isChecked = !hasPasswordProtection
+                    config.isHiddenPasswordProtectionOn = !hasPasswordProtection
+                    config.hiddenPasswordHash = if (hasPasswordProtection) "" else hash
+                    config.hiddenProtectionType = type
+
+                    if (config.isHiddenPasswordProtectionOn) {
+                        val confirmationTextId = if (config.hiddenProtectionType == PROTECTION_FINGERPRINT)
+                            R.string.fingerprint_setup_successfully else R.string.protection_setup_successfully
+                        ConfirmationDialog(this, "", confirmationTextId, R.string.ok, 0) { }
+                    }
+                }
+            }
+        }
+    }
+
+    private fun setupAppPasswordProtection() {
+        settings_app_password_protection.isChecked = config.isAppPasswordProtectionOn
+        settings_app_password_protection_holder.setOnClickListener {
+            val tabToShow = if (config.isAppPasswordProtectionOn) config.appProtectionType else SHOW_ALL_TABS
+            SecurityDialog(this, config.appPasswordHash, tabToShow) { hash, type, success ->
+                if (success) {
+                    val hasPasswordProtection = config.isAppPasswordProtectionOn
+                    settings_app_password_protection.isChecked = !hasPasswordProtection
+                    config.isAppPasswordProtectionOn = !hasPasswordProtection
+                    config.appPasswordHash = if (hasPasswordProtection) "" else hash
+                    config.appProtectionType = type
+
+                    if (config.isAppPasswordProtectionOn) {
+                        val confirmationTextId = if (config.appProtectionType == PROTECTION_FINGERPRINT)
+                            R.string.fingerprint_setup_successfully else R.string.protection_setup_successfully
+                        ConfirmationDialog(this, "", confirmationTextId, R.string.ok, 0) { }
+                    }
+                }
+            }
+        }
+    }
+
+    private fun setupFileDeletionPasswordProtection() {
+        settings_file_deletion_password_protection.isChecked = config.isDeletePasswordProtectionOn
+        settings_file_deletion_password_protection_holder.setOnClickListener {
+            val tabToShow = if (config.isDeletePasswordProtectionOn) config.deleteProtectionType else SHOW_ALL_TABS
+            SecurityDialog(this, config.deletePasswordHash, tabToShow) { hash, type, success ->
+                if (success) {
+                    val hasPasswordProtection = config.isDeletePasswordProtectionOn
+                    settings_file_deletion_password_protection.isChecked = !hasPasswordProtection
+                    config.isDeletePasswordProtectionOn = !hasPasswordProtection
+                    config.deletePasswordHash = if (hasPasswordProtection) "" else hash
+                    config.deleteProtectionType = type
+
+                    if (config.isDeletePasswordProtectionOn) {
+                        val confirmationTextId = if (config.deleteProtectionType == PROTECTION_FINGERPRINT)
+                            R.string.fingerprint_setup_successfully else R.string.protection_setup_successfully
+                        ConfirmationDialog(this, "", confirmationTextId, R.string.ok, 0) { }
+                    }
+                }
+            }
+        }
+    }
+
+    private fun setupDeleteEmptyFolders() {
+        settings_delete_empty_folders.isChecked = config.deleteEmptyFolders
+        settings_delete_empty_folders_holder.setOnClickListener {
+            settings_delete_empty_folders.toggle()
+            config.deleteEmptyFolders = settings_delete_empty_folders.isChecked
+        }
+    }
+
+    private fun setupAllowPhotoGestures() {
+        settings_allow_photo_gestures.isChecked = config.allowPhotoGestures
+        settings_allow_photo_gestures_holder.setOnClickListener {
+            settings_allow_photo_gestures.toggle()
+            config.allowPhotoGestures = settings_allow_photo_gestures.isChecked
+        }
+    }
+
+    private fun setupAllowVideoGestures() {
+        settings_allow_video_gestures.isChecked = config.allowVideoGestures
+        settings_allow_video_gestures_holder.setOnClickListener {
+            settings_allow_video_gestures.toggle()
+            config.allowVideoGestures = settings_allow_video_gestures.isChecked
+        }
+    }
+
+    private fun setupAllowDownGesture() {
+        settings_allow_down_gesture.isChecked = config.allowDownGesture
+        settings_allow_down_gesture_holder.setOnClickListener {
+            settings_allow_down_gesture.toggle()
+            config.allowDownGesture = settings_allow_down_gesture.isChecked
+        }
+    }
+
+    private fun setupShowNotch() {
+        settings_show_notch_holder.beVisibleIf(isPiePlus())
+        settings_show_notch.isChecked = config.showNotch
+        settings_show_notch_holder.setOnClickListener {
+            settings_show_notch.toggle()
+            config.showNotch = settings_show_notch.isChecked
+        }
+    }
+
+    private fun setupShowMediaCount() {
+        settings_show_media_count.isChecked = config.showMediaCount
+        settings_show_media_count_holder.setOnClickListener {
+            settings_show_media_count.toggle()
+            config.showMediaCount = settings_show_media_count.isChecked
+        }
+    }
+
+    private fun setupKeepLastModified() {
+        settings_keep_last_modified.isChecked = config.keepLastModified
+        settings_keep_last_modified_holder.setOnClickListener {
+            settings_keep_last_modified.toggle()
+            config.keepLastModified = settings_keep_last_modified.isChecked
+        }
+    }
+
+    private fun setupShowInfoBubble() {
+        settings_show_info_bubble.isChecked = config.showInfoBubble
+        settings_show_info_bubble_holder.setOnClickListener {
+            settings_show_info_bubble.toggle()
+            config.showInfoBubble = settings_show_info_bubble.isChecked
+        }
+    }
+
+    private fun setupEnablePullToRefresh() {
+        settings_enable_pull_to_refresh.isChecked = config.enablePullToRefresh
+        settings_enable_pull_to_refresh_holder.setOnClickListener {
+            settings_enable_pull_to_refresh.toggle()
+            config.enablePullToRefresh = settings_enable_pull_to_refresh.isChecked
+        }
+    }
+
+    private fun setupAllowZoomingImages() {
+        settings_allow_zooming_images.isChecked = config.allowZoomingImages
+        updateDeepZoomToggleButtons()
+        settings_allow_zooming_images_holder.setOnClickListener {
+            settings_allow_zooming_images.toggle()
+            config.allowZoomingImages = settings_allow_zooming_images.isChecked
+            updateDeepZoomToggleButtons()
+        }
+    }
+
+    private fun updateDeepZoomToggleButtons() {
+        settings_show_highest_quality_holder.beVisibleIf(config.allowZoomingImages)
+        settings_allow_one_to_one_zoom_holder.beVisibleIf(config.allowZoomingImages)
+    }
+
+    private fun setupShowHighestQuality() {
+        settings_show_highest_quality.isChecked = config.showHighestQuality
+        settings_show_highest_quality_holder.setOnClickListener {
+            settings_show_highest_quality.toggle()
+            config.showHighestQuality = settings_show_highest_quality.isChecked
+        }
+    }
+
+    private fun setupAllowOneToOneZoom() {
+        settings_allow_one_to_one_zoom.isChecked = config.allowOneToOneZoom
+        settings_allow_one_to_one_zoom_holder.setOnClickListener {
+            settings_allow_one_to_one_zoom.toggle()
+            config.allowOneToOneZoom = settings_allow_one_to_one_zoom.isChecked
+        }
+    }
+
+    private fun setupAllowInstantChange() {
+        settings_allow_instant_change.isChecked = config.allowInstantChange
+        settings_allow_instant_change_holder.setOnClickListener {
+            settings_allow_instant_change.toggle()
+            config.allowInstantChange = settings_allow_instant_change.isChecked
+        }
+    }
+
+    private fun setupShowExtendedDetails() {
+        settings_show_extended_details.isChecked = config.showExtendedDetails
+        settings_show_extended_details_holder.setOnClickListener {
+            settings_show_extended_details.toggle()
+            config.showExtendedDetails = settings_show_extended_details.isChecked
+            settings_manage_extended_details_holder.beVisibleIf(config.showExtendedDetails)
+            settings_hide_extended_details_holder.beVisibleIf(config.showExtendedDetails)
+        }
+    }
+
+    private fun setupHideExtendedDetails() {
+        settings_hide_extended_details_holder.beVisibleIf(config.showExtendedDetails)
+        settings_hide_extended_details.isChecked = config.hideExtendedDetails
+        settings_hide_extended_details_holder.setOnClickListener {
+            settings_hide_extended_details.toggle()
+            config.hideExtendedDetails = settings_hide_extended_details.isChecked
+        }
+    }
+
+    private fun setupManageExtendedDetails() {
+        settings_manage_extended_details_holder.beVisibleIf(config.showExtendedDetails)
+        settings_manage_extended_details_holder.setOnClickListener {
+            ManageExtendedDetailsDialog(this) {
+                if (config.extendedDetails == 0) {
+                    settings_show_extended_details_holder.callOnClick()
+                }
+            }
+        }
+    }
+
+    private fun setupSkipDeleteConfirmation() {
+        settings_skip_delete_confirmation.isChecked = config.skipDeleteConfirmation
+        settings_skip_delete_confirmation_holder.setOnClickListener {
+            settings_skip_delete_confirmation.toggle()
+            config.skipDeleteConfirmation = settings_skip_delete_confirmation.isChecked
+        }
+    }
+
+    private fun setupScreenRotation() {
+        settings_screen_rotation.text = getScreenRotationText()
+        settings_screen_rotation_holder.setOnClickListener {
+            val items = arrayListOf(
+                    RadioItem(ROTATE_BY_SYSTEM_SETTING, getString(R.string.screen_rotation_system_setting)),
+                    RadioItem(ROTATE_BY_DEVICE_ROTATION, getString(R.string.screen_rotation_device_rotation)),
+                    RadioItem(ROTATE_BY_ASPECT_RATIO, getString(R.string.screen_rotation_aspect_ratio)))
+
+            RadioGroupDialog(this@SettingsActivity, items, config.screenRotation) {
+                config.screenRotation = it as Int
+                settings_screen_rotation.text = getScreenRotationText()
+            }
+        }
+    }
+
+    private fun getScreenRotationText() = getString(when (config.screenRotation) {
+        ROTATE_BY_SYSTEM_SETTING -> R.string.screen_rotation_system_setting
+        ROTATE_BY_DEVICE_ROTATION -> R.string.screen_rotation_device_rotation
+        else -> R.string.screen_rotation_aspect_ratio
+    })
+
+    private fun setupBottomActions() {
+        settings_bottom_actions.isChecked = config.bottomActions
+        settings_bottom_actions_holder.setOnClickListener {
+            settings_bottom_actions.toggle()
+            config.bottomActions = settings_bottom_actions.isChecked
+            settings_manage_bottom_actions_holder.beVisibleIf(config.bottomActions)
+        }
+    }
+
+    private fun setupManageBottomActions() {
+        settings_manage_bottom_actions_holder.beVisibleIf(config.bottomActions)
+        settings_manage_bottom_actions_holder.setOnClickListener {
+            ManageBottomActionsDialog(this) {
+                if (config.visibleBottomActions == 0) {
+                    settings_bottom_actions_holder.callOnClick()
+                    config.bottomActions = false
+                    config.visibleBottomActions = DEFAULT_BOTTOM_ACTIONS
+                }
+            }
+        }
+    }
+
+    private fun setupUseRecycleBin() {
+        settings_empty_recycle_bin_holder.beVisibleIf(config.useRecycleBin)
+        settings_show_recycle_bin_holder.beVisibleIf(config.useRecycleBin)
+        settings_show_recycle_bin_last_holder.beVisibleIf(config.useRecycleBin && config.showRecycleBinAtFolders)
+        settings_use_recycle_bin.isChecked = config.useRecycleBin
+        settings_use_recycle_bin_holder.setOnClickListener {
+            settings_use_recycle_bin.toggle()
+            config.useRecycleBin = settings_use_recycle_bin.isChecked
+            settings_empty_recycle_bin_holder.beVisibleIf(config.useRecycleBin)
+            settings_show_recycle_bin_holder.beVisibleIf(config.useRecycleBin)
+            settings_show_recycle_bin_last_holder.beVisibleIf(config.useRecycleBin && config.showRecycleBinAtFolders)
+        }
+    }
+
+    private fun setupShowRecycleBin() {
+        settings_show_recycle_bin.isChecked = config.showRecycleBinAtFolders
+        settings_show_recycle_bin_holder.setOnClickListener {
+            settings_show_recycle_bin.toggle()
+            config.showRecycleBinAtFolders = settings_show_recycle_bin.isChecked
+            settings_show_recycle_bin_last_holder.beVisibleIf(config.useRecycleBin && config.showRecycleBinAtFolders)
+        }
+    }
+
+    private fun setupShowRecycleBinLast() {
+        settings_show_recycle_bin_last.isChecked = config.showRecycleBinLast
+        settings_show_recycle_bin_last_holder.setOnClickListener {
+            settings_show_recycle_bin_last.toggle()
+            config.showRecycleBinLast = settings_show_recycle_bin_last.isChecked
+            if (config.showRecycleBinLast) {
+                config.removePinnedFolders(setOf(RECYCLE_BIN))
+            }
+        }
+    }
+
+    private fun setupEmptyRecycleBin() {
+        Thread {
+            mRecycleBinContentSize = galleryDB.MediumDao().getDeletedMedia().sumByLong { it.size }
+            runOnUiThread {
+                settings_empty_recycle_bin_size.text = mRecycleBinContentSize.formatSize()
+            }
+        }.start()
+
+        settings_empty_recycle_bin_holder.setOnClickListener {
+            if (mRecycleBinContentSize == 0L) {
+                toast(R.string.recycle_bin_empty)
+            } else {
+                showRecycleBinEmptyingDialog {
+                    emptyTheRecycleBin()
+                    mRecycleBinContentSize = 0L
+                    settings_empty_recycle_bin_size.text = 0L.formatSize()
+                }
+            }
+        }
+    }
+
+    private fun setupExportSettings() {
+        settings_export_holder.setOnClickListener {
+            val configItems = LinkedHashMap<String, Any>().apply {
+                put(IS_USING_SHARED_THEME, config.isUsingSharedTheme)
+                put(TEXT_COLOR, config.textColor)
+                put(BACKGROUND_COLOR, config.backgroundColor)
+                put(PRIMARY_COLOR, config.primaryColor)
+                put(APP_ICON_COLOR, config.appIconColor)
+                put(USE_ENGLISH, config.useEnglish)
+                put(WAS_USE_ENGLISH_TOGGLED, config.wasUseEnglishToggled)
+                put(INCLUDED_FOLDERS, TextUtils.join(",", config.includedFolders))
+                put(EXCLUDED_FOLDERS, TextUtils.join(",", config.excludedFolders))
+                put(SHOW_HIDDEN_MEDIA, config.showHiddenMedia)
+                put(DO_EXTRA_CHECK, config.doExtraCheck)
+                put(AUTOPLAY_VIDEOS, config.autoplayVideos)
+                put(REMEMBER_LAST_VIDEO_POSITION, config.rememberLastVideoPosition)
+                put(LAST_VIDEO_PATH, config.lastVideoPath)
+                put(LOOP_VIDEOS, config.loopVideos)
+                put(OPEN_VIDEOS_ON_SEPARATE_SCREEN, config.openVideosOnSeparateScreen)
+                put(ALLOW_VIDEO_GESTURES, config.allowVideoGestures)
+                put(ANIMATE_GIFS, config.animateGifs)
+                put(CROP_THUMBNAILS, config.cropThumbnails)
+                put(SHOW_THUMBNAIL_VIDEO_DURATION, config.showThumbnailVideoDuration)
+                put(SHOW_MEDIA_COUNT, config.showMediaCount)
+                put(SHOW_INFO_BUBBLE, config.showInfoBubble)
+                put(SCROLL_HORIZONTALLY, config.scrollHorizontally)
+                put(ENABLE_PULL_TO_REFRESH, config.enablePullToRefresh)
+                put(MAX_BRIGHTNESS, config.maxBrightness)
+                put(BLACK_BACKGROUND, config.blackBackground)
+                put(HIDE_SYSTEM_UI, config.hideSystemUI)
+                put(ALLOW_INSTANT_CHANGE, config.allowInstantChange)
+                put(ALLOW_PHOTO_GESTURES, config.allowPhotoGestures)
+                put(ALLOW_DOWN_GESTURE, config.allowDownGesture)
+                put(SHOW_NOTCH, config.showNotch)
+                put(SCREEN_ROTATION, config.screenRotation)
+                put(ALLOW_ZOOMING_IMAGES, config.allowZoomingImages)
+                put(SHOW_HIGHEST_QUALITY, config.showHighestQuality)
+                put(ALLOW_ONE_TO_ONE_ZOOM, config.allowOneToOneZoom)
+                put(SHOW_EXTENDED_DETAILS, config.showExtendedDetails)
+                put(HIDE_EXTENDED_DETAILS, config.hideExtendedDetails)
+                put(EXTENDED_DETAILS, config.extendedDetails)
+                put(DELETE_EMPTY_FOLDERS, config.deleteEmptyFolders)
+                put(KEEP_LAST_MODIFIED, config.keepLastModified)
+                put(SKIP_DELETE_CONFIRMATION, config.skipDeleteConfirmation)
+                put(BOTTOM_ACTIONS, config.bottomActions)
+                put(VISIBLE_BOTTOM_ACTIONS, config.visibleBottomActions)
+                put(USE_RECYCLE_BIN, config.useRecycleBin)
+                put(SHOW_RECYCLE_BIN_AT_FOLDERS, config.showRecycleBinAtFolders)
+                put(SHOW_RECYCLE_BIN_LAST, config.showRecycleBinLast)
+                put(SORT_ORDER, config.sorting)
+                put(DIRECTORY_SORT_ORDER, config.directorySorting)
+                put(GROUP_BY, config.groupBy)
+                put(GROUP_DIRECT_SUBFOLDERS, config.groupDirectSubfolders)
+                put(PINNED_FOLDERS, TextUtils.join(",", config.pinnedFolders))
+                put(DISPLAY_FILE_NAMES, config.displayFileNames)
+                put(FILTER_MEDIA, config.filterMedia)
+                put(DIR_COLUMN_CNT, config.dirColumnCnt)
+                put(MEDIA_COLUMN_CNT, config.mediaColumnCnt)
+                put(SHOW_ALL, config.showAll)
+                put(SHOW_WIDGET_FOLDER_NAME, config.showWidgetFolderName)
+                put(WIDGET_BG_COLOR, config.widgetBgColor)
+                put(WIDGET_TEXT_COLOR, config.widgetTextColor)
+                put(VIEW_TYPE_FILES, config.viewTypeFiles)
+                put(VIEW_TYPE_FOLDERS, config.viewTypeFolders)
+                put(SLIDESHOW_INTERVAL, config.slideshowInterval)
+                put(SLIDESHOW_INCLUDE_VIDEOS, config.slideshowIncludeVideos)
+                put(SLIDESHOW_INCLUDE_GIFS, config.slideshowIncludeGIFs)
+                put(SLIDESHOW_RANDOM_ORDER, config.slideshowRandomOrder)
+                put(SLIDESHOW_MOVE_BACKWARDS, config.slideshowMoveBackwards)
+                put(SLIDESHOW_LOOP, config.loopSlideshow)
+                put(LAST_EDITOR_CROP_ASPECT_RATIO, config.lastEditorCropAspectRatio)
+                put(LAST_EDITOR_CROP_OTHER_ASPECT_RATIO_X, config.lastEditorCropOtherAspectRatioX)
+                put(LAST_EDITOR_CROP_OTHER_ASPECT_RATIO_Y, config.lastEditorCropOtherAspectRatioY)
+                put(LAST_EDITOR_DRAW_COLOR, config.lastEditorDrawColor)
+                put(LAST_EDITOR_BRUSH_SIZE, config.lastEditorBrushSize)
+                put(LAST_CONFLICT_RESOLUTION, config.lastConflictResolution)
+                put(LAST_CONFLICT_APPLY_TO_ALL, config.lastConflictApplyToAll)
+            }
+
+            exportSettings(configItems, "gallery-settings.txt")
+        }
+    }
+
+    private fun setupImportSettings() {
+        settings_import_holder.setOnClickListener {
+            FilePickerDialog(this) {
+                Thread {
+                    try {
+                        parseFile(it)
+                    } catch (e: Exception) {
+                        showErrorToast(e)
+                    }
+                }.start()
+            }
+        }
+    }
+
+    private fun parseFile(path: String) {
+        val inputStream = File(path).inputStream()
+        var importedItems = 0
+        val configValues = LinkedHashMap<String, Any>()
+        inputStream.bufferedReader().use {
+            while (true) {
+                try {
+                    val line = it.readLine() ?: break
+                    val split = line.split("=".toRegex(), 2)
+                    if (split.size == 2) {
+                        configValues[split[0]] = split[1]
+                    }
+                    importedItems++
+                } catch (e: Exception) {
+                    showErrorToast(e)
+                }
+            }
+        }
+
+        for ((key, value) in configValues) {
+            when (key) {
+                IS_USING_SHARED_THEME -> config.isUsingSharedTheme = value.toBoolean()
+                TEXT_COLOR -> config.textColor = value.toInt()
+                BACKGROUND_COLOR -> config.backgroundColor = value.toInt()
+                PRIMARY_COLOR -> config.primaryColor = value.toInt()
+                APP_ICON_COLOR -> {
+                    if (getAppIconColors().contains(value.toInt())) {
+                        config.appIconColor = value.toInt()
+                        checkAppIconColor()
+                    }
+                }
+                USE_ENGLISH -> config.useEnglish = value.toBoolean()
+                WAS_USE_ENGLISH_TOGGLED -> config.wasUseEnglishToggled = value.toBoolean()
+                INCLUDED_FOLDERS -> config.addIncludedFolders(value.toStringSet())
+                EXCLUDED_FOLDERS -> config.addExcludedFolders(value.toStringSet())
+                SHOW_HIDDEN_MEDIA -> config.showHiddenMedia = value.toBoolean()
+                DO_EXTRA_CHECK -> config.doExtraCheck = value.toBoolean()
+                AUTOPLAY_VIDEOS -> config.autoplayVideos = value.toBoolean()
+                REMEMBER_LAST_VIDEO_POSITION -> config.rememberLastVideoPosition = value.toBoolean()
+                LAST_VIDEO_PATH -> config.lastVideoPath = value.toString()
+                LOOP_VIDEOS -> config.loopVideos = value.toBoolean()
+                OPEN_VIDEOS_ON_SEPARATE_SCREEN -> config.openVideosOnSeparateScreen = value.toBoolean()
+                ALLOW_VIDEO_GESTURES -> config.allowVideoGestures = value.toBoolean()
+                ANIMATE_GIFS -> config.animateGifs = value.toBoolean()
+                CROP_THUMBNAILS -> config.cropThumbnails = value.toBoolean()
+                SHOW_THUMBNAIL_VIDEO_DURATION -> config.showThumbnailVideoDuration = value.toBoolean()
+                SHOW_MEDIA_COUNT -> config.showMediaCount = value.toBoolean()
+                SHOW_INFO_BUBBLE -> config.showInfoBubble = value.toBoolean()
+                SCROLL_HORIZONTALLY -> config.scrollHorizontally = value.toBoolean()
+                ENABLE_PULL_TO_REFRESH -> config.enablePullToRefresh = value.toBoolean()
+                MAX_BRIGHTNESS -> config.maxBrightness = value.toBoolean()
+                BLACK_BACKGROUND -> config.blackBackground = value.toBoolean()
+                HIDE_SYSTEM_UI -> config.hideSystemUI = value.toBoolean()
+                ALLOW_INSTANT_CHANGE -> config.allowInstantChange = value.toBoolean()
+                ALLOW_PHOTO_GESTURES -> config.allowPhotoGestures = value.toBoolean()
+                ALLOW_DOWN_GESTURE -> config.allowDownGesture = value.toBoolean()
+                SHOW_NOTCH -> config.showNotch = value.toBoolean()
+                SCREEN_ROTATION -> config.screenRotation = value.toInt()
+                ALLOW_ZOOMING_IMAGES -> config.allowZoomingImages = value.toBoolean()
+                SHOW_HIGHEST_QUALITY -> config.showHighestQuality = value.toBoolean()
+                ALLOW_ONE_TO_ONE_ZOOM -> config.allowOneToOneZoom = value.toBoolean()
+                SHOW_EXTENDED_DETAILS -> config.showExtendedDetails = value.toBoolean()
+                HIDE_EXTENDED_DETAILS -> config.hideExtendedDetails = value.toBoolean()
+                EXTENDED_DETAILS -> config.extendedDetails = value.toInt()
+                DELETE_EMPTY_FOLDERS -> config.deleteEmptyFolders = value.toBoolean()
+                KEEP_LAST_MODIFIED -> config.keepLastModified = value.toBoolean()
+                SKIP_DELETE_CONFIRMATION -> config.skipDeleteConfirmation = value.toBoolean()
+                BOTTOM_ACTIONS -> config.bottomActions = value.toBoolean()
+                VISIBLE_BOTTOM_ACTIONS -> config.visibleBottomActions = value.toInt()
+                USE_RECYCLE_BIN -> config.useRecycleBin = value.toBoolean()
+                SHOW_RECYCLE_BIN_AT_FOLDERS -> config.showRecycleBinAtFolders = value.toBoolean()
+                SHOW_RECYCLE_BIN_LAST -> config.showRecycleBinLast = value.toBoolean()
+                SORT_ORDER -> config.sorting = value.toInt()
+                DIRECTORY_SORT_ORDER -> config.directorySorting = value.toInt()
+                GROUP_BY -> config.groupBy = value.toInt()
+                GROUP_DIRECT_SUBFOLDERS -> config.groupDirectSubfolders = value.toBoolean()
+                PINNED_FOLDERS -> config.addPinnedFolders(value.toStringSet())
+                DISPLAY_FILE_NAMES -> config.displayFileNames = value.toBoolean()
+                FILTER_MEDIA -> config.filterMedia = value.toInt()
+                DIR_COLUMN_CNT -> config.dirColumnCnt = value.toInt()
+                MEDIA_COLUMN_CNT -> config.mediaColumnCnt = value.toInt()
+                SHOW_ALL -> config.showAll = value.toBoolean()
+                SHOW_WIDGET_FOLDER_NAME -> config.showWidgetFolderName = value.toBoolean()
+                WIDGET_BG_COLOR -> config.widgetBgColor = value.toInt()
+                WIDGET_TEXT_COLOR -> config.widgetTextColor = value.toInt()
+                VIEW_TYPE_FILES -> config.viewTypeFiles = value.toInt()
+                VIEW_TYPE_FOLDERS -> config.viewTypeFolders = value.toInt()
+                SLIDESHOW_INTERVAL -> config.slideshowInterval = value.toInt()
+                SLIDESHOW_INCLUDE_VIDEOS -> config.slideshowIncludeVideos = value.toBoolean()
+                SLIDESHOW_INCLUDE_GIFS -> config.slideshowIncludeGIFs = value.toBoolean()
+                SLIDESHOW_RANDOM_ORDER -> config.slideshowRandomOrder = value.toBoolean()
+                SLIDESHOW_MOVE_BACKWARDS -> config.slideshowMoveBackwards = value.toBoolean()
+                SLIDESHOW_LOOP -> config.loopSlideshow = value.toBoolean()
+                LAST_EDITOR_CROP_ASPECT_RATIO -> config.lastEditorCropAspectRatio = value.toInt()
+                LAST_EDITOR_CROP_OTHER_ASPECT_RATIO_X -> config.lastEditorCropOtherAspectRatioX = value.toInt()
+                LAST_EDITOR_CROP_OTHER_ASPECT_RATIO_Y -> config.lastEditorCropOtherAspectRatioY = value.toInt()
+                LAST_EDITOR_DRAW_COLOR -> config.lastEditorDrawColor = value.toInt()
+                LAST_EDITOR_BRUSH_SIZE -> config.lastEditorBrushSize = value.toInt()
+                LAST_CONFLICT_RESOLUTION -> config.lastConflictResolution = value.toInt()
+                LAST_CONFLICT_APPLY_TO_ALL -> config.lastConflictApplyToAll = value.toBoolean()
+            }
+        }
+
+        toast(if (configValues.size > 0) R.string.settings_imported_successfully else R.string.no_entries_for_importing)
+        runOnUiThread {
+            setupSettingItems()
+        }
+    }
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/SimpleActivity.kt

@@ -1,7 +1,11 @@
-package com.simplemobiletools.gallery.activities
+package com.simplemobiletools.gallery.pro.activities
 
+import android.annotation.SuppressLint
+import android.view.WindowManager
 import com.simplemobiletools.commons.activities.BaseSimpleActivity
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.commons.helpers.isPiePlus
+import com.simplemobiletools.gallery.pro.R
+import com.simplemobiletools.gallery.pro.extensions.config
 
 open class SimpleActivity : BaseSimpleActivity() {
     override fun getAppIconIDs() = arrayListOf(
@@ -27,4 +31,19 @@ open class SimpleActivity : BaseSimpleActivity() {
     )
 
     override fun getAppLauncherName() = getString(R.string.app_launcher_name)
+
+    @SuppressLint("InlinedApi")
+    protected fun checkNotchSupport() {
+        if (isPiePlus()) {
+            val cutoutMode = when {
+                config.showNotch -> WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES
+                else -> WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_NEVER
+            }
+
+            window.attributes.layoutInDisplayCutoutMode = cutoutMode
+            if (config.showNotch) {
+                window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS)
+            }
+        }
+    }
 }

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/SplashActivity.kt

@@ -1,9 +1,11 @@
-package com.simplemobiletools.gallery.activities
+package com.simplemobiletools.gallery.pro.activities
 
 import android.content.Intent
 import com.simplemobiletools.commons.activities.BaseSplashActivity
 
 class SplashActivity : BaseSplashActivity() {
+    override fun getAppPackageName() = "-1"
+
     override fun initActivity() {
         startActivity(Intent(this, MainActivity::class.java))
         finish()

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/VideoActivity.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.activities
+package com.simplemobiletools.gallery.pro.activities
 
 import android.os.Bundle
 

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/VideoPlayerActivity.kt

@@ -0,0 +1,616 @@
+package com.simplemobiletools.gallery.pro.activities
+
+import android.app.Activity
+import android.content.Intent
+import android.content.pm.ActivityInfo
+import android.content.res.Configuration
+import android.graphics.Color
+import android.graphics.Point
+import android.graphics.SurfaceTexture
+import android.graphics.drawable.ColorDrawable
+import android.net.Uri
+import android.os.Bundle
+import android.os.Handler
+import android.util.DisplayMetrics
+import android.view.*
+import android.widget.SeekBar
+import com.google.android.exoplayer2.*
+import com.google.android.exoplayer2.extractor.DefaultExtractorsFactory
+import com.google.android.exoplayer2.source.ExtractorMediaSource
+import com.google.android.exoplayer2.source.TrackGroupArray
+import com.google.android.exoplayer2.trackselection.TrackSelectionArray
+import com.google.android.exoplayer2.upstream.ContentDataSource
+import com.google.android.exoplayer2.upstream.DataSource
+import com.google.android.exoplayer2.upstream.DataSpec
+import com.google.android.exoplayer2.video.VideoListener
+import com.simplemobiletools.commons.extensions.*
+import com.simplemobiletools.commons.helpers.PERMISSION_WRITE_STORAGE
+import com.simplemobiletools.gallery.pro.R
+import com.simplemobiletools.gallery.pro.extensions.*
+import com.simplemobiletools.gallery.pro.helpers.*
+import kotlinx.android.synthetic.main.activity_video_player.*
+import kotlinx.android.synthetic.main.bottom_video_time_holder.*
+
+open class VideoPlayerActivity : SimpleActivity(), SeekBar.OnSeekBarChangeListener, TextureView.SurfaceTextureListener {
+    private val PLAY_WHEN_READY_DRAG_DELAY = 100L
+
+    private var mIsFullscreen = false
+    private var mIsPlaying = false
+    private var mWasVideoStarted = false
+    private var mIsDragged = false
+    private var mIsOrientationLocked = false
+    private var mScreenWidth = 0
+    private var mCurrTime = 0
+    private var mDuration = 0
+    private var mDragThreshold = 0f
+    private var mTouchDownX = 0f
+    private var mTouchDownY = 0f
+    private var mTouchDownTime = 0L
+    private var mProgressAtDown = 0L
+    private var mCloseDownThreshold = 100f
+
+    private var mUri: Uri? = null
+    private var mExoPlayer: SimpleExoPlayer? = null
+    private var mVideoSize = Point(0, 0)
+    private var mTimerHandler = Handler()
+    private var mPlayWhenReadyHandler = Handler()
+
+    private var mIgnoreCloseDown = false
+
+    public override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_video_player)
+        setupOrientation()
+        checkNotchSupport()
+
+        handlePermission(PERMISSION_WRITE_STORAGE) {
+            if (it) {
+                initPlayer()
+            } else {
+                toast(R.string.no_storage_permissions)
+                finish()
+            }
+        }
+    }
+
+    override fun onResume() {
+        super.onResume()
+        top_shadow.layoutParams.height = statusBarHeight + actionBarHeight
+        supportActionBar?.setBackgroundDrawable(ColorDrawable(Color.TRANSPARENT))
+        window.statusBarColor = Color.TRANSPARENT
+        window.navigationBarColor = Color.TRANSPARENT
+        if (config.blackBackground) {
+            video_player_holder.background = ColorDrawable(Color.BLACK)
+        }
+
+        if (config.maxBrightness) {
+            val attributes = window.attributes
+            attributes.screenBrightness = 1f
+            window.attributes = attributes
+        }
+
+        updateTextColors(video_player_holder)
+    }
+
+    override fun onPause() {
+        super.onPause()
+        pauseVideo()
+
+        if (config.rememberLastVideoPosition && mWasVideoStarted) {
+            saveVideoProgress()
+        }
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        if (!isChangingConfigurations) {
+            pauseVideo()
+            video_curr_time.text = 0.getFormattedDuration()
+            releaseExoPlayer()
+            video_seekbar.progress = 0
+            mTimerHandler.removeCallbacksAndMessages(null)
+            mPlayWhenReadyHandler.removeCallbacksAndMessages(null)
+        }
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        menuInflater.inflate(R.menu.menu_video_player, menu)
+        return true
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        when (item.itemId) {
+            R.id.menu_change_orientation -> changeOrientation()
+            R.id.menu_open_with -> openPath(mUri!!.toString(), true)
+            R.id.menu_share -> shareMediumPath(mUri!!.toString())
+            else -> return super.onOptionsItemSelected(item)
+        }
+        return true
+    }
+
+    override fun onConfigurationChanged(newConfig: Configuration) {
+        super.onConfigurationChanged(newConfig)
+        setVideoSize()
+        initTimeHolder()
+        video_surface_frame.onGlobalLayout {
+            video_surface_frame.controller.resetState()
+        }
+    }
+
+    private fun setupOrientation() {
+        if (!mIsOrientationLocked) {
+            if (config.screenRotation == ROTATE_BY_DEVICE_ROTATION) {
+                requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_SENSOR
+            } else if (config.screenRotation == ROTATE_BY_SYSTEM_SETTING) {
+                requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED
+            }
+        }
+    }
+
+    private fun initPlayer() {
+        mUri = intent.data ?: return
+        supportActionBar?.title = getFilenameFromUri(mUri!!)
+        initTimeHolder()
+
+        showSystemUI(true)
+        window.decorView.setOnSystemUiVisibilityChangeListener { visibility ->
+            val isFullscreen = visibility and View.SYSTEM_UI_FLAG_FULLSCREEN != 0
+            fullscreenToggled(isFullscreen)
+        }
+
+        video_curr_time.setOnClickListener { skip(false) }
+        video_duration.setOnClickListener { skip(true) }
+        video_toggle_play_pause.setOnClickListener { togglePlayPause() }
+        video_surface_frame.setOnClickListener { toggleFullscreen() }
+
+        video_next_file.beVisibleIf(intent.getBooleanExtra(SHOW_NEXT_ITEM, false))
+        video_next_file.setOnClickListener { handleNextFile() }
+
+        video_prev_file.beVisibleIf(intent.getBooleanExtra(SHOW_PREV_ITEM, false))
+        video_prev_file.setOnClickListener { handlePrevFile() }
+
+        video_surface_frame.setOnTouchListener { view, event ->
+            handleEvent(event)
+            false
+        }
+
+        initExoPlayer()
+        video_surface.surfaceTextureListener = this
+
+        if (config.allowVideoGestures) {
+            video_brightness_controller.initialize(this, slide_info, true, video_player_holder) { x, y ->
+                toggleFullscreen()
+            }
+
+            video_volume_controller.initialize(this, slide_info, false, video_player_holder) { x, y ->
+                toggleFullscreen()
+            }
+        } else {
+            video_brightness_controller.beGone()
+            video_volume_controller.beGone()
+        }
+
+        if (config.hideSystemUI) {
+            Handler().postDelayed({
+                fullscreenToggled(true)
+            }, HIDE_SYSTEM_UI_DELAY)
+        }
+
+        mDragThreshold = DRAG_THRESHOLD * resources.displayMetrics.density
+    }
+
+    private fun initExoPlayer() {
+        val dataSpec = DataSpec(mUri)
+        val fileDataSource = ContentDataSource(applicationContext)
+        try {
+            fileDataSource.open(dataSpec)
+        } catch (e: Exception) {
+            showErrorToast(e)
+        }
+
+        val factory = DataSource.Factory { fileDataSource }
+        val audioSource = ExtractorMediaSource(fileDataSource.uri, factory, DefaultExtractorsFactory(), null, null)
+        mExoPlayer = ExoPlayerFactory.newSimpleInstance(applicationContext).apply {
+            seekParameters = SeekParameters.CLOSEST_SYNC
+            audioStreamType = C.STREAM_TYPE_MUSIC
+            prepare(audioSource)
+        }
+        initExoPlayerListeners()
+    }
+
+    private fun initExoPlayerListeners() {
+        mExoPlayer!!.addListener(object : Player.EventListener {
+            override fun onPlaybackParametersChanged(playbackParameters: PlaybackParameters?) {}
+
+            override fun onSeekProcessed() {}
+
+            override fun onTracksChanged(trackGroups: TrackGroupArray?, trackSelections: TrackSelectionArray?) {}
+
+            override fun onPlayerError(error: ExoPlaybackException?) {}
+
+            override fun onLoadingChanged(isLoading: Boolean) {}
+
+            override fun onPositionDiscontinuity(reason: Int) {}
+
+            override fun onRepeatModeChanged(repeatMode: Int) {}
+
+            override fun onShuffleModeEnabledChanged(shuffleModeEnabled: Boolean) {}
+
+            override fun onTimelineChanged(timeline: Timeline?, manifest: Any?, reason: Int) {}
+
+            override fun onPlayerStateChanged(playWhenReady: Boolean, playbackState: Int) {
+                when (playbackState) {
+                    Player.STATE_READY -> videoPrepared()
+                    Player.STATE_ENDED -> videoCompleted()
+                }
+            }
+        })
+
+        mExoPlayer!!.addVideoListener(object : VideoListener {
+            override fun onVideoSizeChanged(width: Int, height: Int, unappliedRotationDegrees: Int, pixelWidthHeightRatio: Float) {
+                mVideoSize.x = width
+                mVideoSize.y = height
+                setVideoSize()
+            }
+
+            override fun onRenderedFirstFrame() {}
+        })
+    }
+
+    private fun videoPrepared() {
+        if (!mWasVideoStarted) {
+            video_toggle_play_pause.beVisible()
+            mDuration = (mExoPlayer!!.duration / 1000).toInt()
+            video_seekbar.max = mDuration
+            video_duration.text = mDuration.getFormattedDuration()
+            setPosition(mCurrTime)
+
+            if (config.rememberLastVideoPosition) {
+                setLastVideoSavedPosition()
+            }
+
+            if (config.autoplayVideos) {
+                resumeVideo()
+            } else {
+                video_toggle_play_pause.setImageResource(R.drawable.ic_play_outline)
+            }
+        }
+    }
+
+    private fun resumeVideo() {
+        video_toggle_play_pause.setImageResource(R.drawable.ic_pause_outline)
+        if (mExoPlayer == null) {
+            return
+        }
+
+        val wasEnded = didVideoEnd()
+        if (wasEnded) {
+            setPosition(0)
+        }
+
+        mWasVideoStarted = true
+        mIsPlaying = true
+        mExoPlayer?.playWhenReady = true
+        window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+    }
+
+    private fun pauseVideo() {
+        video_toggle_play_pause.setImageResource(R.drawable.ic_play_outline)
+        if (mExoPlayer == null) {
+            return
+        }
+
+        mIsPlaying = false
+        if (!didVideoEnd()) {
+            mExoPlayer?.playWhenReady = false
+        }
+
+        window.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+    }
+
+    private fun togglePlayPause() {
+        mIsPlaying = !mIsPlaying
+        if (mIsPlaying) {
+            resumeVideo()
+        } else {
+            pauseVideo()
+        }
+    }
+
+    private fun setPosition(seconds: Int) {
+        mExoPlayer?.seekTo(seconds * 1000L)
+        video_seekbar.progress = seconds
+        video_curr_time.text = seconds.getFormattedDuration()
+    }
+
+    private fun setLastVideoSavedPosition() {
+        if (config.lastVideoPath == mUri.toString() && config.lastVideoPosition > 0) {
+            setPosition(config.lastVideoPosition)
+        }
+    }
+
+    private fun videoCompleted() {
+        if (mExoPlayer == null) {
+            return
+        }
+
+        clearLastVideoSavedProgress()
+        mCurrTime = (mExoPlayer!!.duration / 1000).toInt()
+        if (config.loopVideos) {
+            resumeVideo()
+        } else {
+            video_seekbar.progress = video_seekbar.max
+            video_curr_time.text = mDuration.getFormattedDuration()
+            pauseVideo()
+        }
+    }
+
+    private fun didVideoEnd(): Boolean {
+        val currentPos = mExoPlayer?.currentPosition ?: 0
+        val duration = mExoPlayer?.duration ?: 0
+        return currentPos != 0L && currentPos >= duration
+    }
+
+    private fun saveVideoProgress() {
+        if (!didVideoEnd()) {
+            config.apply {
+                lastVideoPosition = mExoPlayer!!.currentPosition.toInt() / 1000
+                lastVideoPath = mUri.toString()
+            }
+        }
+    }
+
+    private fun clearLastVideoSavedProgress() {
+        config.apply {
+            lastVideoPosition = 0
+            lastVideoPath = ""
+        }
+    }
+
+    private fun setVideoSize() {
+        val videoProportion = mVideoSize.x.toFloat() / mVideoSize.y.toFloat()
+        val display = windowManager.defaultDisplay
+        val screenWidth: Int
+        val screenHeight: Int
+
+        val realMetrics = DisplayMetrics()
+        display.getRealMetrics(realMetrics)
+        screenWidth = realMetrics.widthPixels
+        screenHeight = realMetrics.heightPixels
+
+        val screenProportion = screenWidth.toFloat() / screenHeight.toFloat()
+
+        video_surface.layoutParams.apply {
+            if (videoProportion > screenProportion) {
+                width = screenWidth
+                height = (screenWidth.toFloat() / videoProportion).toInt()
+            } else {
+                width = (videoProportion * screenHeight.toFloat()).toInt()
+                height = screenHeight
+            }
+            video_surface.layoutParams = this
+        }
+
+        val multiplier = if (screenWidth > screenHeight) 0.5 else 0.8
+        mScreenWidth = (screenWidth * multiplier).toInt()
+
+        if (config.screenRotation == ROTATE_BY_ASPECT_RATIO) {
+            if (mVideoSize.x > mVideoSize.y) {
+                requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
+            } else if (mVideoSize.x < mVideoSize.y) {
+                requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
+            }
+        }
+    }
+
+    private fun changeOrientation() {
+        mIsOrientationLocked = true
+        requestedOrientation = if (resources.configuration.orientation == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT) {
+            ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
+        } else {
+            ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
+        }
+    }
+
+    private fun toggleFullscreen() {
+        fullscreenToggled(!mIsFullscreen)
+    }
+
+    private fun fullscreenToggled(isFullScreen: Boolean) {
+        mIsFullscreen = isFullScreen
+        if (isFullScreen) {
+            hideSystemUI(true)
+        } else {
+            showSystemUI(true)
+        }
+
+        val newAlpha = if (isFullScreen) 0f else 1f
+        arrayOf(video_prev_file, video_toggle_play_pause, video_next_file, video_curr_time, video_seekbar, video_duration, top_shadow, video_bottom_gradient).forEach {
+            it.animate().alpha(newAlpha).start()
+        }
+        video_seekbar.setOnSeekBarChangeListener(if (mIsFullscreen) null else this)
+        arrayOf(video_prev_file, video_next_file, video_curr_time, video_duration).forEach {
+            it.isClickable = !mIsFullscreen
+        }
+    }
+
+    private fun initTimeHolder() {
+        var right = 0
+        var bottom = 0
+
+        if (hasNavBar()) {
+            if (resources.configuration.orientation == Configuration.ORIENTATION_PORTRAIT) {
+                bottom += navigationBarHeight
+            } else {
+                right += navigationBarWidth
+                bottom += navigationBarHeight
+            }
+        }
+
+        video_time_holder.setPadding(0, 0, right, bottom)
+        video_seekbar.setOnSeekBarChangeListener(this)
+        video_seekbar.max = mDuration
+        video_duration.text = mDuration.getFormattedDuration()
+        video_curr_time.text = mCurrTime.getFormattedDuration()
+        setupTimer()
+    }
+
+    private fun setupTimer() {
+        runOnUiThread(object : Runnable {
+            override fun run() {
+                if (mExoPlayer != null && !mIsDragged && mIsPlaying) {
+                    mCurrTime = (mExoPlayer!!.currentPosition / 1000).toInt()
+                    video_seekbar.progress = mCurrTime
+                    video_curr_time.text = mCurrTime.getFormattedDuration()
+                }
+
+                mTimerHandler.postDelayed(this, 1000)
+            }
+        })
+    }
+
+    private fun skip(forward: Boolean) {
+        if (mExoPlayer == null) {
+            return
+        }
+
+        val curr = mExoPlayer!!.currentPosition
+        val twoPercents = Math.max((mExoPlayer!!.duration / 50).toInt(), MIN_SKIP_LENGTH)
+        val newProgress = if (forward) curr + twoPercents else curr - twoPercents
+        val roundProgress = Math.round(newProgress / 1000f)
+        val limitedProgress = Math.max(Math.min(mExoPlayer!!.duration.toInt(), roundProgress), 0)
+        setPosition(limitedProgress)
+        if (!mIsPlaying) {
+            togglePlayPause()
+        }
+    }
+
+    private fun handleEvent(event: MotionEvent) {
+        when (event.actionMasked) {
+            MotionEvent.ACTION_DOWN -> {
+                mTouchDownX = event.x
+                mTouchDownY = event.y
+                mTouchDownTime = System.currentTimeMillis()
+                mProgressAtDown = mExoPlayer!!.currentPosition
+            }
+            MotionEvent.ACTION_POINTER_DOWN -> mIgnoreCloseDown = true
+            MotionEvent.ACTION_MOVE -> {
+                val diffX = event.x - mTouchDownX
+                val diffY = event.y - mTouchDownY
+
+                if (mIsDragged || (Math.abs(diffX) > mDragThreshold && Math.abs(diffX) > Math.abs(diffY)) && video_surface_frame.controller.state.zoom == 1f) {
+                    if (!mIsDragged) {
+                        arrayOf(video_curr_time, video_seekbar, video_duration).forEach {
+                            it.animate().alpha(1f).start()
+                        }
+                    }
+                    mIgnoreCloseDown = true
+                    mIsDragged = true
+                    var percent = ((diffX / mScreenWidth) * 100).toInt()
+                    percent = Math.min(100, Math.max(-100, percent))
+
+                    val skipLength = (mDuration * 1000f) * (percent / 100f)
+                    var newProgress = mProgressAtDown + skipLength
+                    newProgress = Math.max(Math.min(mExoPlayer!!.duration.toFloat(), newProgress), 0f)
+                    val newSeconds = (newProgress / 1000).toInt()
+                    setPosition(newSeconds)
+                    resetPlayWhenReady()
+                }
+            }
+            MotionEvent.ACTION_UP -> {
+                val diffX = mTouchDownX - event.x
+                val diffY = mTouchDownY - event.y
+
+                val downGestureDuration = System.currentTimeMillis() - mTouchDownTime
+                if (config.allowDownGesture && !mIgnoreCloseDown && Math.abs(diffY) > Math.abs(diffX) && diffY < -mCloseDownThreshold &&
+                        downGestureDuration < MAX_CLOSE_DOWN_GESTURE_DURATION &&
+                        video_surface_frame.controller.state.zoom == 1f) {
+                    supportFinishAfterTransition()
+                }
+
+                mIgnoreCloseDown = false
+                if (mIsDragged) {
+                    if (mIsFullscreen) {
+                        arrayOf(video_curr_time, video_seekbar, video_duration).forEach {
+                            it.animate().alpha(0f).start()
+                        }
+                    }
+
+                    if (!mIsPlaying) {
+                        togglePlayPause()
+                    }
+                }
+                mIsDragged = false
+            }
+        }
+    }
+
+    private fun handleNextFile() {
+        Intent().apply {
+            putExtra(GO_TO_NEXT_ITEM, true)
+            setResult(Activity.RESULT_OK, this)
+        }
+        finish()
+    }
+
+    private fun handlePrevFile() {
+        Intent().apply {
+            putExtra(GO_TO_PREV_ITEM, true)
+            setResult(Activity.RESULT_OK, this)
+        }
+        finish()
+    }
+
+    private fun resetPlayWhenReady() {
+        mExoPlayer?.playWhenReady = false
+        mPlayWhenReadyHandler.removeCallbacksAndMessages(null)
+        mPlayWhenReadyHandler.postDelayed({
+            mExoPlayer?.playWhenReady = true
+        }, PLAY_WHEN_READY_DRAG_DELAY)
+    }
+
+    private fun releaseExoPlayer() {
+        mExoPlayer?.stop()
+        Thread {
+            mExoPlayer?.release()
+            mExoPlayer = null
+        }.start()
+    }
+
+    override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
+        if (mExoPlayer != null && fromUser) {
+            setPosition(progress)
+            resetPlayWhenReady()
+        }
+    }
+
+    override fun onStartTrackingTouch(seekBar: SeekBar?) {
+        mIsDragged = true
+    }
+
+    override fun onStopTrackingTouch(seekBar: SeekBar?) {
+        if (mExoPlayer == null)
+            return
+
+        if (mIsPlaying) {
+            mExoPlayer!!.playWhenReady = true
+        } else {
+            togglePlayPause()
+        }
+
+        mIsDragged = false
+    }
+
+    override fun onSurfaceTextureUpdated(surface: SurfaceTexture?) {
+    }
+
+    override fun onSurfaceTextureDestroyed(surface: SurfaceTexture?) = false
+
+    override fun onSurfaceTextureAvailable(surface: SurfaceTexture?, width: Int, height: Int) {
+        Thread {
+            mExoPlayer?.setVideoSurface(Surface(video_surface!!.surfaceTexture))
+        }.start()
+    }
+
+    override fun onSurfaceTextureSizeChanged(surface: SurfaceTexture?, width: Int, height: Int) {}
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/ViewPagerActivity.kt

@@ -1,67 +1,59 @@
-package com.simplemobiletools.gallery.activities
+package com.simplemobiletools.gallery.pro.activities
 
 import android.animation.Animator
 import android.animation.ValueAnimator
-import android.annotation.SuppressLint
-import android.annotation.TargetApi
 import android.app.Activity
 import android.content.Intent
 import android.content.pm.ActivityInfo
 import android.content.res.Configuration
 import android.database.Cursor
-import android.graphics.Bitmap
-import android.graphics.BitmapFactory
 import android.graphics.Color
-import android.graphics.Matrix
 import android.graphics.drawable.ColorDrawable
 import android.media.ExifInterface
 import android.net.Uri
-import android.os.Build
 import android.os.Bundle
 import android.os.Handler
 import android.provider.MediaStore
-import android.support.v4.view.ViewPager
-import android.util.DisplayMetrics
 import android.view.Menu
 import android.view.MenuItem
 import android.view.View
 import android.view.WindowManager
 import android.view.animation.DecelerateInterpolator
-import com.bumptech.glide.Glide
+import android.widget.Toast
+import androidx.viewpager.widget.ViewPager
 import com.simplemobiletools.commons.dialogs.PropertiesDialog
 import com.simplemobiletools.commons.dialogs.RenameItemDialog
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.*
 import com.simplemobiletools.commons.models.FileDirItem
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.BuildConfig
-import com.simplemobiletools.gallery.adapters.MyPagerAdapter
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.asynctasks.GetMediaAsynctask
+import com.simplemobiletools.gallery.pro.adapters.MyPagerAdapter
-import com.simplemobiletools.gallery.dialogs.DeleteWithRememberDialog
+import com.simplemobiletools.gallery.pro.asynctasks.GetMediaAsynctask
-import com.simplemobiletools.gallery.dialogs.SaveAsDialog
+import com.simplemobiletools.gallery.pro.dialogs.DeleteWithRememberDialog
-import com.simplemobiletools.gallery.dialogs.SlideshowDialog
+import com.simplemobiletools.gallery.pro.dialogs.SaveAsDialog
-import com.simplemobiletools.gallery.extensions.*
+import com.simplemobiletools.gallery.pro.dialogs.SlideshowDialog
-import com.simplemobiletools.gallery.fragments.PhotoFragment
+import com.simplemobiletools.gallery.pro.extensions.*
-import com.simplemobiletools.gallery.fragments.VideoFragment
+import com.simplemobiletools.gallery.pro.fragments.PhotoFragment
-import com.simplemobiletools.gallery.fragments.ViewPagerFragment
+import com.simplemobiletools.gallery.pro.fragments.VideoFragment
-import com.simplemobiletools.gallery.helpers.*
+import com.simplemobiletools.gallery.pro.fragments.ViewPagerFragment
-import com.simplemobiletools.gallery.models.Medium
+import com.simplemobiletools.gallery.pro.helpers.*
-import com.simplemobiletools.gallery.models.ThumbnailItem
+import com.simplemobiletools.gallery.pro.models.Medium
+import com.simplemobiletools.gallery.pro.models.ThumbnailItem
 import kotlinx.android.synthetic.main.activity_medium.*
 import kotlinx.android.synthetic.main.bottom_actions.*
 import java.io.File
-import java.io.FileOutputStream
-import java.io.InputStream
-import java.io.OutputStream
 import java.util.*
 
 class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, ViewPagerFragment.FragmentListener {
+    private val REQUEST_VIEW_VIDEO = 1
+
     private var mPath = ""
     private var mDirectory = ""
     private var mIsFullScreen = false
     private var mPos = -1
     private var mShowAll = false
     private var mIsSlideshowActive = false
-    private var mRotationDegrees = 0
     private var mPrevHashcode = 0
 
     private var mSlideshowHandler = Handler()
@@ -69,19 +61,18 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
     private var mSlideshowMoveBackwards = false
     private var mSlideshowMedia = mutableListOf<Medium>()
     private var mAreSlideShowMediaVisible = false
+
     private var mIsOrientationLocked = false
 
     private var mMediaFiles = ArrayList<Medium>()
     private var mFavoritePaths = ArrayList<String>()
 
-    companion object {
-        var screenWidth = 0
-        var screenHeight = 0
-    }
-
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_medium)
+
+        top_shadow.layoutParams.height = statusBarHeight + actionBarHeight
+        checkNotchSupport()
         (MediaActivity.mMedia.clone() as ArrayList<ThumbnailItem>).filter { it is Medium }.mapTo(mMediaFiles) { it as Medium }
 
         handlePermission(PERMISSION_WRITE_STORAGE) {
@@ -96,7 +87,6 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         initFavorites()
     }
 
-    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
     override fun onResume() {
         super.onResume()
         if (!hasPermission(PERMISSION_WRITE_STORAGE)) {
@@ -105,15 +95,12 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         }
 
         if (config.bottomActions) {
-            if (isLollipopPlus()) {
             window.navigationBarColor = Color.TRANSPARENT
-            }
         } else {
             setTranslucentNavigation()
         }
 
         initBottomActions()
-        supportActionBar?.setBackgroundDrawable(resources.getDrawable(R.drawable.actionbar_gradient_background))
 
         if (config.maxBrightness) {
             val attributes = window.attributes
@@ -121,12 +108,11 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
             window.attributes = attributes
         }
 
-        setupRotation()
+        setupOrientation()
         invalidateOptionsMenu()
 
-        if (config.blackBackground) {
+        supportActionBar?.setBackgroundDrawable(ColorDrawable(Color.TRANSPARENT))
-            updateStatusbarColor(Color.BLACK)
+        window.statusBarColor = Color.TRANSPARENT
-        }
     }
 
     override fun onPause() {
@@ -149,8 +135,81 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         }
     }
 
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        menuInflater.inflate(R.menu.menu_viewpager, menu)
+        val currentMedium = getCurrentMedium() ?: return true
+        currentMedium.isFavorite = mFavoritePaths.contains(currentMedium.path)
+        val visibleBottomActions = if (config.bottomActions) config.visibleBottomActions else 0
+
+        val rotationDegrees = getCurrentPhotoFragment()?.mCurrentRotationDegrees ?: 0
+        menu.apply {
+            findItem(R.id.menu_show_on_map).isVisible = visibleBottomActions and BOTTOM_ACTION_SHOW_ON_MAP == 0
+            findItem(R.id.menu_slideshow).isVisible = visibleBottomActions and BOTTOM_ACTION_SLIDESHOW == 0
+            findItem(R.id.menu_properties).isVisible = visibleBottomActions and BOTTOM_ACTION_PROPERTIES == 0
+            findItem(R.id.menu_delete).isVisible = visibleBottomActions and BOTTOM_ACTION_DELETE == 0
+            findItem(R.id.menu_share).isVisible = visibleBottomActions and BOTTOM_ACTION_SHARE == 0
+            findItem(R.id.menu_edit).isVisible = visibleBottomActions and BOTTOM_ACTION_EDIT == 0 && !currentMedium.isSVG()
+            findItem(R.id.menu_rename).isVisible = visibleBottomActions and BOTTOM_ACTION_RENAME == 0 && !currentMedium.getIsInRecycleBin()
+            findItem(R.id.menu_rotate).isVisible = currentMedium.isImage() && visibleBottomActions and BOTTOM_ACTION_ROTATE == 0
+            findItem(R.id.menu_set_as).isVisible = visibleBottomActions and BOTTOM_ACTION_SET_AS == 0
+            findItem(R.id.menu_copy_to).isVisible = visibleBottomActions and BOTTOM_ACTION_COPY == 0
+            findItem(R.id.menu_save_as).isVisible = rotationDegrees != 0
+            findItem(R.id.menu_hide).isVisible = !currentMedium.isHidden() && visibleBottomActions and BOTTOM_ACTION_TOGGLE_VISIBILITY == 0 && !currentMedium.getIsInRecycleBin()
+            findItem(R.id.menu_unhide).isVisible = currentMedium.isHidden() && visibleBottomActions and BOTTOM_ACTION_TOGGLE_VISIBILITY == 0 && !currentMedium.getIsInRecycleBin()
+            findItem(R.id.menu_add_to_favorites).isVisible = !currentMedium.isFavorite && visibleBottomActions and BOTTOM_ACTION_TOGGLE_FAVORITE == 0
+            findItem(R.id.menu_remove_from_favorites).isVisible = currentMedium.isFavorite && visibleBottomActions and BOTTOM_ACTION_TOGGLE_FAVORITE == 0
+            findItem(R.id.menu_restore_file).isVisible = currentMedium.path.startsWith(recycleBinPath)
+            findItem(R.id.menu_change_orientation).isVisible = rotationDegrees == 0 && visibleBottomActions and BOTTOM_ACTION_CHANGE_ORIENTATION == 0
+            findItem(R.id.menu_change_orientation).icon = resources.getDrawable(getChangeOrientationIcon())
+            findItem(R.id.menu_rotate).setShowAsAction(
+                    if (rotationDegrees != 0) {
+                        MenuItem.SHOW_AS_ACTION_ALWAYS
+                    } else {
+                        MenuItem.SHOW_AS_ACTION_IF_ROOM
+                    })
+        }
+
+        if (visibleBottomActions != 0) {
+            updateBottomActionIcons(currentMedium)
+        }
+        return true
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        if (getCurrentMedium() == null)
+            return true
+
+        when (item.itemId) {
+            R.id.menu_set_as -> setAs(getCurrentPath())
+            R.id.menu_slideshow -> initSlideshow()
+            R.id.menu_copy_to -> copyMoveTo(true)
+            R.id.menu_move_to -> moveFileTo()
+            R.id.menu_open_with -> openPath(getCurrentPath(), true)
+            R.id.menu_hide -> toggleFileVisibility(true)
+            R.id.menu_unhide -> toggleFileVisibility(false)
+            R.id.menu_share -> shareMediumPath(getCurrentPath())
+            R.id.menu_delete -> checkDeleteConfirmation()
+            R.id.menu_rename -> renameFile()
+            R.id.menu_edit -> openEditor(getCurrentPath())
+            R.id.menu_properties -> showProperties()
+            R.id.menu_show_on_map -> showOnMap()
+            R.id.menu_rotate_right -> rotateImage(90)
+            R.id.menu_rotate_left -> rotateImage(-90)
+            R.id.menu_rotate_one_eighty -> rotateImage(180)
+            R.id.menu_add_to_favorites -> toggleFavorite()
+            R.id.menu_remove_from_favorites -> toggleFavorite()
+            R.id.menu_restore_file -> restoreFile()
+            R.id.menu_force_portrait -> toggleOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT)
+            R.id.menu_force_landscape -> toggleOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE)
+            R.id.menu_default_orientation -> toggleOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED)
+            R.id.menu_save_as -> saveImageAs()
+            R.id.menu_settings -> launchSettings()
+            else -> return super.onOptionsItemSelected(item)
+        }
+        return true
+    }
+
     private fun initViewPager() {
-        measureScreen()
         val uri = intent.data
         if (uri != null) {
             var cursor: Cursor? = null
@@ -191,7 +250,7 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
 
         if (intent.extras?.containsKey(IS_VIEW_INTENT) == true) {
             if (isShowHiddenFlagNeeded()) {
-                if (!config.isPasswordProtectionOn) {
+                if (!config.isHiddenPasswordProtectionOn) {
                     config.temporarilyShowHidden = true
                 }
             }
@@ -214,9 +273,10 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         supportActionBar?.title = mPath.getFilenameFromPath()
 
         view_pager.onGlobalLayout {
-            if (!isActivityDestroyed()) {
+            if (!isDestroyed) {
                 if (mMediaFiles.isNotEmpty()) {
                     gotMedia(mMediaFiles as ArrayList<ThumbnailItem>)
+                    checkSlideshowOnEnter()
                 }
             }
         }
@@ -232,7 +292,7 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
             view_pager.onGlobalLayout {
                 Handler().postDelayed({
                     fragmentClicked()
-                }, 500)
+                }, HIDE_SYSTEM_UI_DELAY)
             }
         }
 
@@ -246,8 +306,10 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
             view_pager.adapter?.let {
                 (it as MyPagerAdapter).toggleFullscreen(mIsFullScreen)
                 checkSystemUI()
-                if (!bottom_actions.isGone()) {
+                val newAlpha = if (mIsFullScreen) 0f else 1f
-                    bottom_actions.animate().alpha(if (mIsFullScreen) 0f else 1f).start()
+                top_shadow.animate().alpha(newAlpha).start()
+                if (bottom_actions.isVisible()) {
+                    bottom_actions.animate().alpha(newAlpha).start()
                     arrayOf(bottom_favorite, bottom_edit, bottom_share, bottom_delete, bottom_rotate, bottom_properties, bottom_change_orientation,
                             bottom_slideshow, bottom_show_on_map, bottom_toggle_file_visibility, bottom_rename).forEach {
                         it.isClickable = !mIsFullScreen
@@ -255,6 +317,24 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
                 }
             }
         }
+
+        if (intent.action == "com.android.camera.action.REVIEW") {
+            Thread {
+                if (galleryDB.MediumDao().getMediaFromPath(mPath).isEmpty()) {
+                    val type = when {
+                        mPath.isVideoFast() -> TYPE_VIDEOS
+                        mPath.isGif() -> TYPE_GIFS
+                        mPath.isSvg() -> TYPE_SVGS
+                        mPath.isRawFast() -> TYPE_RAWS
+                        else -> TYPE_IMAGES
+                    }
+
+                    val duration = if (type == TYPE_VIDEOS) mPath.getVideoDuration() else 0
+                    val medium = Medium(null, mPath.getFilenameFromPath(), mPath, mPath.getParentPath(), System.currentTimeMillis(), System.currentTimeMillis(), File(mPath).length(), type, duration, false, 0)
+                    galleryDB.MediumDao().insert(medium)
+                }
+            }.start()
+        }
     }
 
     private fun initBottomActions() {
@@ -268,7 +348,7 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         }.start()
     }
 
-    private fun setupRotation() {
+    private fun setupOrientation() {
         if (!mIsOrientationLocked) {
             if (config.screenRotation == ROTATE_BY_DEVICE_ROTATION) {
                 requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_SENSOR
@@ -278,81 +358,9 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         }
     }
 
-    override fun onCreateOptionsMenu(menu: Menu): Boolean {
-        menuInflater.inflate(R.menu.menu_viewpager, menu)
-        val currentMedium = getCurrentMedium() ?: return true
-        currentMedium.isFavorite = mFavoritePaths.contains(currentMedium.path)
-        val visibleBottomActions = if (config.bottomActions) config.visibleBottomActions else 0
-
-        menu.apply {
-            findItem(R.id.menu_show_on_map).isVisible = visibleBottomActions and BOTTOM_ACTION_SHOW_ON_MAP == 0
-            findItem(R.id.menu_slideshow).isVisible = visibleBottomActions and BOTTOM_ACTION_SLIDESHOW == 0
-            findItem(R.id.menu_properties).isVisible = visibleBottomActions and BOTTOM_ACTION_PROPERTIES == 0
-            findItem(R.id.menu_delete).isVisible = visibleBottomActions and BOTTOM_ACTION_DELETE == 0
-            findItem(R.id.menu_share).isVisible = visibleBottomActions and BOTTOM_ACTION_SHARE == 0
-            findItem(R.id.menu_edit).isVisible = visibleBottomActions and BOTTOM_ACTION_EDIT == 0 && !currentMedium.isSVG()
-            findItem(R.id.menu_rename).isVisible = visibleBottomActions and BOTTOM_ACTION_RENAME == 0 && !currentMedium.getIsInRecycleBin()
-            findItem(R.id.menu_rotate).isVisible = currentMedium.isImage() && visibleBottomActions and BOTTOM_ACTION_ROTATE == 0
-            findItem(R.id.menu_set_as).isVisible = visibleBottomActions and BOTTOM_ACTION_SET_AS == 0
-            findItem(R.id.menu_save_as).isVisible = mRotationDegrees != 0
-            findItem(R.id.menu_hide).isVisible = !currentMedium.isHidden() && visibleBottomActions and BOTTOM_ACTION_TOGGLE_VISIBILITY == 0 && !currentMedium.getIsInRecycleBin()
-            findItem(R.id.menu_unhide).isVisible = currentMedium.isHidden() && visibleBottomActions and BOTTOM_ACTION_TOGGLE_VISIBILITY == 0 && !currentMedium.getIsInRecycleBin()
-            findItem(R.id.menu_add_to_favorites).isVisible = !currentMedium.isFavorite && visibleBottomActions and BOTTOM_ACTION_TOGGLE_FAVORITE == 0
-            findItem(R.id.menu_remove_from_favorites).isVisible = currentMedium.isFavorite && visibleBottomActions and BOTTOM_ACTION_TOGGLE_FAVORITE == 0
-            findItem(R.id.menu_restore_file).isVisible = currentMedium.path.startsWith(filesDir.absolutePath)
-            findItem(R.id.menu_change_orientation).isVisible = mRotationDegrees == 0 && visibleBottomActions and BOTTOM_ACTION_CHANGE_ORIENTATION == 0
-            findItem(R.id.menu_change_orientation).icon = resources.getDrawable(getChangeOrientationIcon())
-            findItem(R.id.menu_rotate).setShowAsAction(
-                    if (mRotationDegrees != 0) {
-                        MenuItem.SHOW_AS_ACTION_ALWAYS
-                    } else {
-                        MenuItem.SHOW_AS_ACTION_IF_ROOM
-                    })
-        }
-
-        if (visibleBottomActions != 0) {
-            updateBottomActionIcons(currentMedium)
-        }
-        return true
-    }
-
-    override fun onOptionsItemSelected(item: MenuItem): Boolean {
-        if (getCurrentMedium() == null)
-            return true
-
-        when (item.itemId) {
-            R.id.menu_set_as -> setAs(getCurrentPath())
-            R.id.menu_slideshow -> initSlideshow()
-            R.id.menu_copy_to -> copyMoveTo(true)
-            R.id.menu_move_to -> copyMoveTo(false)
-            R.id.menu_open_with -> openPath(getCurrentPath(), true)
-            R.id.menu_hide -> toggleFileVisibility(true)
-            R.id.menu_unhide -> toggleFileVisibility(false)
-            R.id.menu_share -> shareMediumPath(getCurrentPath())
-            R.id.menu_delete -> checkDeleteConfirmation()
-            R.id.menu_rename -> renameFile()
-            R.id.menu_edit -> openEditor(getCurrentPath())
-            R.id.menu_properties -> showProperties()
-            R.id.menu_show_on_map -> showOnMap()
-            R.id.menu_rotate_right -> rotateImage(90)
-            R.id.menu_rotate_left -> rotateImage(270)
-            R.id.menu_rotate_one_eighty -> rotateImage(180)
-            R.id.menu_add_to_favorites -> toggleFavorite()
-            R.id.menu_remove_from_favorites -> toggleFavorite()
-            R.id.menu_restore_file -> restoreFile()
-            R.id.menu_force_portrait -> toggleOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT)
-            R.id.menu_force_landscape -> toggleOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE)
-            R.id.menu_default_orientation -> toggleOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED)
-            R.id.menu_save_as -> saveImageAs()
-            R.id.menu_settings -> launchSettings()
-            else -> return super.onOptionsItemSelected(item)
-        }
-        return true
-    }
-
     private fun updatePagerItems(media: MutableList<Medium>) {
         val pagerAdapter = MyPagerAdapter(this, supportFragmentManager, media)
-        if (!isActivityDestroyed()) {
+        if (!isDestroyed) {
             view_pager.apply {
                 adapter = pagerAdapter
                 currentItem = mPos
@@ -362,6 +370,12 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         }
     }
 
+    private fun checkSlideshowOnEnter() {
+        if (intent.getBooleanExtra(SLIDESHOW_START_ON_ENTER, false)) {
+            initSlideshow()
+        }
+    }
+
     private fun initSlideshow() {
         SlideshowDialog(this) {
             startSlideshow()
@@ -371,7 +385,7 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
     private fun startSlideshow() {
         if (getMediaForSlideshow()) {
             view_pager.onGlobalLayout {
-                if (!isActivityDestroyed()) {
+                if (!isDestroyed) {
                     hideSystemUI(true)
                     mSlideshowInterval = config.slideshowInterval
                     mSlideshowMoveBackwards = config.slideshowMoveBackwards
@@ -421,7 +435,7 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
                     val dragOffset = dragPosition - oldDragPosition
                     oldDragPosition = dragPosition
                     try {
-                        view_pager.fakeDragBy(dragOffset * (if (forward) 1f else -1f))
+                        view_pager.fakeDragBy(dragOffset * (if (forward) -1f else 1f))
                     } catch (e: Exception) {
                         stopSlideshow()
                     }
@@ -461,7 +475,7 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         if (mIsSlideshowActive) {
             if (getCurrentMedium()!!.isImage() || getCurrentMedium()!!.isGIF()) {
                 mSlideshowHandler.postDelayed({
-                    if (mIsSlideshowActive && !isActivityDestroyed()) {
+                    if (mIsSlideshowActive && !isDestroyed) {
                         swipeToNextMedium()
                     }
                 }, mSlideshowInterval * 1000L)
@@ -476,18 +490,9 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
     }
 
     private fun getMediaForSlideshow(): Boolean {
-        mSlideshowMedia = mMediaFiles.toMutableList()
+        mSlideshowMedia = mMediaFiles.filter {
-        if (!config.slideshowIncludePhotos) {
+            it.isImage() || (config.slideshowIncludeVideos && it.isVideo() || (config.slideshowIncludeGIFs && it.isGIF()))
-            mSlideshowMedia = mSlideshowMedia.filter { !it.isImage() } as MutableList
+        }.toMutableList()
-        }
-
-        if (!config.slideshowIncludeVideos) {
-            mSlideshowMedia = mSlideshowMedia.filter { it.isImage() || it.isGIF() } as MutableList
-        }
-
-        if (!config.slideshowIncludeGIFs) {
-            mSlideshowMedia = mSlideshowMedia.filter { !it.isGIF() } as MutableList
-        }
 
         if (config.slideshowRandomOrder) {
             mSlideshowMedia.shuffle()
@@ -507,13 +512,25 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         }
     }
 
+    private fun moveFileTo() {
+        handleDeletePasswordProtection {
+            copyMoveTo(false)
+        }
+    }
+
     private fun copyMoveTo(isCopyOperation: Boolean) {
         val currPath = getCurrentPath()
+        if (!isCopyOperation && currPath.startsWith(recycleBinPath)) {
+            toast(R.string.moving_recycle_bin_items_disabled, Toast.LENGTH_LONG)
+            return
+        }
+
         val fileDirItems = arrayListOf(FileDirItem(currPath, currPath.getFilenameFromPath()))
         tryCopyMoveFilesTo(fileDirItems, isCopyOperation) {
             config.tempFolderPath = ""
             if (!isCopyOperation) {
                 refreshViewPager()
+                updateFavoritePaths(fileDirItems, it)
             }
         }
     }
@@ -534,10 +551,18 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
     }
 
     private fun rotateImage(degrees: Int) {
-        mRotationDegrees = (mRotationDegrees + degrees) % 360
+        val currentPath = getCurrentPath()
-        getCurrentFragment()?.let {
+        if (needsStupidWritePermissions(currentPath)) {
-            (it as? PhotoFragment)?.rotateImageViewBy(mRotationDegrees)
+            handleSAFDialog(currentPath) {
+                rotateBy(degrees)
             }
+        } else {
+            rotateBy(degrees)
+        }
+    }
+
+    private fun rotateBy(degrees: Int) {
+        getCurrentPhotoFragment()?.rotateImageViewBy(degrees)
         supportInvalidateOptionsMenu()
     }
 
@@ -563,110 +588,20 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         val currPath = getCurrentPath()
         SaveAsDialog(this, currPath, false) {
             handleSAFDialog(it) {
+                toast(R.string.saving)
                 Thread {
-                    saveImageToFile(currPath, it)
+                    val photoFragment = getCurrentPhotoFragment() ?: return@Thread
+                    saveRotatedImageToFile(currPath, it, photoFragment.mCurrentRotationDegrees, true) {
+                        toast(R.string.file_saved)
+                        getCurrentPhotoFragment()?.mCurrentRotationDegrees = 0
+                        invalidateOptionsMenu()
+                    }
                 }.start()
             }
         }
     }
 
-    private fun saveImageToFile(oldPath: String, newPath: String) {
+    private fun getCurrentPhotoFragment() = getCurrentFragment() as? PhotoFragment
-        toast(R.string.saving)
-        if (oldPath == newPath && oldPath.isJpg()) {
-            if (tryRotateByExif(oldPath)) {
-                return
-            }
-        }
-
-        val tmpPath = "${filesDir.absolutePath}/.tmp_${newPath.getFilenameFromPath()}"
-        val tmpFileDirItem = FileDirItem(tmpPath, tmpPath.getFilenameFromPath())
-        try {
-            getFileOutputStream(tmpFileDirItem) {
-                if (it == null) {
-                    toast(R.string.unknown_error_occurred)
-                    return@getFileOutputStream
-                }
-
-                val oldLastModified = getCurrentFile().lastModified()
-                if (oldPath.isJpg()) {
-                    copyFile(getCurrentPath(), tmpPath)
-                    saveExifRotation(ExifInterface(tmpPath), mRotationDegrees)
-                } else {
-                    val inputstream = getFileInputStreamSync(oldPath)
-                    val bitmap = BitmapFactory.decodeStream(inputstream)
-                    saveFile(tmpPath, bitmap, it as FileOutputStream)
-                }
-
-                if (getDoesFilePathExist(newPath)) {
-                    tryDeleteFileDirItem(FileDirItem(newPath, newPath.getFilenameFromPath()), false, true)
-                }
-
-                copyFile(tmpPath, newPath)
-                scanPathRecursively(newPath)
-                toast(R.string.file_saved)
-
-                if (config.keepLastModified) {
-                    File(newPath).setLastModified(oldLastModified)
-                    updateLastModified(newPath, oldLastModified)
-                }
-
-                it.flush()
-                it.close()
-                mRotationDegrees = 0
-                invalidateOptionsMenu()
-
-                // we cannot refresh a specific image in Glide Cache, so just clear it all
-                val glide = Glide.get(applicationContext)
-                glide.clearDiskCache()
-                runOnUiThread {
-                    glide.clearMemory()
-                }
-            }
-        } catch (e: OutOfMemoryError) {
-            toast(R.string.out_of_memory_error)
-        } catch (e: Exception) {
-            showErrorToast(e)
-        } finally {
-            tryDeleteFileDirItem(tmpFileDirItem, false, true)
-        }
-    }
-
-    @TargetApi(Build.VERSION_CODES.N)
-    private fun tryRotateByExif(path: String): Boolean {
-        return try {
-            if (saveImageRotation(path, mRotationDegrees)) {
-                mRotationDegrees = 0
-                invalidateOptionsMenu()
-                toast(R.string.file_saved)
-                true
-            } else {
-                false
-            }
-        } catch (e: Exception) {
-            showErrorToast(e)
-            false
-        }
-    }
-
-    private fun copyFile(source: String, destination: String) {
-        var inputStream: InputStream? = null
-        var out: OutputStream? = null
-        try {
-            out = getFileOutputStreamSync(destination, source.getMimeType())
-            inputStream = getFileInputStreamSync(source)
-            inputStream?.copyTo(out!!)
-        } finally {
-            inputStream?.close()
-            out?.close()
-        }
-    }
-
-    private fun saveFile(path: String, bitmap: Bitmap, out: FileOutputStream) {
-        val matrix = Matrix()
-        matrix.postRotate(mRotationDegrees.toFloat())
-        val bmp = Bitmap.createBitmap(bitmap, 0, 0, bitmap.width, bitmap.height, matrix, true)
-        bmp.compress(path.getCompressionFormat(), 90, out)
-    }
 
     private fun isShowHiddenFlagNeeded(): Boolean {
         val file = File(mPath)
@@ -839,6 +774,11 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         bottom_set_as.setOnClickListener {
             setAs(getCurrentPath())
         }
+
+        bottom_copy.beVisibleIf(visibleBottomActions and BOTTOM_ACTION_COPY != 0)
+        bottom_copy.setOnClickListener {
+            copyMoveTo(true)
+        }
     }
 
     private fun updateBottomActionIcons(medium: Medium?) {
@@ -877,15 +817,17 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
     }
 
     override fun onActivityResult(requestCode: Int, resultCode: Int, resultData: Intent?) {
-        if (requestCode == REQUEST_EDIT_IMAGE) {
+        if (requestCode == REQUEST_EDIT_IMAGE && resultCode == Activity.RESULT_OK && resultData != null) {
-            if (resultCode == Activity.RESULT_OK && resultData != null) {
             mPos = -1
             mPrevHashcode = 0
             refreshViewPager()
-            }
+        } else if (requestCode == REQUEST_SET_AS && resultCode == Activity.RESULT_OK) {
-        } else if (requestCode == REQUEST_SET_AS) {
-            if (resultCode == Activity.RESULT_OK) {
             toast(R.string.wallpaper_set_successfully)
+        } else if (requestCode == REQUEST_VIEW_VIDEO && resultCode == Activity.RESULT_OK && resultData != null) {
+            if (resultData.getBooleanExtra(GO_TO_NEXT_ITEM, false)) {
+                goToNextItem()
+            } else if (resultData.getBooleanExtra(GO_TO_PREV_ITEM, false)) {
+                goToPrevItem()
             }
         }
         super.onActivityResult(requestCode, resultCode, resultData)
@@ -896,7 +838,11 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
             return
         }
 
-        if (config.tempSkipDeleteConfirmation || config.skipDeleteConfirmation) {
+        if (config.isDeletePasswordProtectionOn) {
+            handleDeletePasswordProtection {
+                deleteConfirmed()
+            }
+        } else if (config.tempSkipDeleteConfirmation || config.skipDeleteConfirmation) {
             deleteConfirmed()
         } else {
             askConfirmDelete()
@@ -904,8 +850,16 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
     }
 
     private fun askConfirmDelete() {
-        val message = if (config.useRecycleBin && !getCurrentMedium()!!.getIsInRecycleBin()) R.string.are_you_sure_recycle_bin else R.string.are_you_sure_delete
+        val filename = "\"${getCurrentPath().getFilenameFromPath()}\""
-        DeleteWithRememberDialog(this, getString(message)) {
+
+        val baseString = if (config.useRecycleBin && !getCurrentMedium()!!.getIsInRecycleBin()) {
+            R.string.move_to_recycle_bin_confirmation
+        } else {
+            R.string.deletion_confirmation
+        }
+
+        val message = String.format(resources.getString(baseString), filename)
+        DeleteWithRememberDialog(this, message) {
             config.tempSkipDeleteConfirmation = it
             deleteConfirmed()
         }
@@ -962,32 +916,19 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
 
     override fun onConfigurationChanged(newConfig: Configuration?) {
         super.onConfigurationChanged(newConfig)
-        measureScreen()
         initBottomActionsLayout()
     }
 
-    @SuppressLint("NewApi")
-    private fun measureScreen() {
-        val metrics = DisplayMetrics()
-        if (isJellyBean1Plus()) {
-            windowManager.defaultDisplay.getRealMetrics(metrics)
-            screenWidth = metrics.widthPixels
-            screenHeight = metrics.heightPixels
-        } else {
-            windowManager.defaultDisplay.getMetrics(metrics)
-            screenWidth = metrics.widthPixels
-            screenHeight = metrics.heightPixels
-        }
-    }
-
     private fun refreshViewPager() {
+        if (config.getFileSorting(mDirectory) and SORT_BY_RANDOM == 0) {
             GetMediaAsynctask(applicationContext, mDirectory, false, false, mShowAll) {
                 gotMedia(it)
             }.execute()
         }
+    }
 
     private fun gotMedia(thumbnailItems: ArrayList<ThumbnailItem>) {
-        val media = thumbnailItems.filter { it is Medium }.map { it as Medium } as ArrayList<Medium>
+        val media = thumbnailItems.asSequence().filter { it is Medium }.map { it as Medium }.toMutableList() as ArrayList<Medium>
         if (isDirEmpty(media) || media.hashCode() == mPrevHashcode) {
             return
         }
@@ -1069,6 +1010,34 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         checkOrientation()
     }
 
+    override fun launchViewVideoIntent(path: String) {
+        Thread {
+            val newUri = getFinalUriFromPath(path, BuildConfig.APPLICATION_ID) ?: return@Thread
+            val mimeType = getUriMimeType(path, newUri)
+            Intent().apply {
+                action = Intent.ACTION_VIEW
+                setDataAndType(newUri, mimeType)
+                addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+                putExtra(IS_FROM_GALLERY, true)
+                putExtra(REAL_FILE_PATH, path)
+                putExtra(SHOW_PREV_ITEM, view_pager.currentItem != 0)
+                putExtra(SHOW_NEXT_ITEM, view_pager.currentItem != mMediaFiles.size - 1)
+
+                if (resolveActivity(packageManager) != null) {
+                    try {
+                        startActivityForResult(this, REQUEST_VIEW_VIDEO)
+                    } catch (e: NullPointerException) {
+                        showErrorToast(e)
+                    }
+                } else {
+                    if (!tryGenericMimeType(this, mimeType, newUri)) {
+                        toast(R.string.no_app_found)
+                    }
+                }
+            }
+        }.start()
+    }
+
     private fun checkSystemUI() {
         if (mIsFullScreen) {
             hideSystemUI(true)
@@ -1098,15 +1067,12 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
 
     private fun getCurrentPath() = getCurrentMedium()?.path ?: ""
 
-    private fun getCurrentFile() = File(getCurrentPath())
-
     override fun onPageScrolled(position: Int, positionOffset: Float, positionOffsetPixels: Int) {}
 
     override fun onPageSelected(position: Int) {
         if (mPos != position) {
             mPos = position
             updateActionbarTitle()
-            mRotationDegrees = 0
             invalidateOptionsMenu()
             scheduleSwipe()
         }

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/WidgetConfigureActivity.kt

@@ -0,0 +1,184 @@
+package com.simplemobiletools.gallery.pro.activities
+
+import android.app.Activity
+import android.appwidget.AppWidgetManager
+import android.content.Intent
+import android.graphics.Color
+import android.graphics.drawable.ColorDrawable
+import android.os.Bundle
+import android.widget.RelativeLayout
+import android.widget.RemoteViews
+import com.simplemobiletools.commons.dialogs.ColorPickerDialog
+import com.simplemobiletools.commons.extensions.*
+import com.simplemobiletools.gallery.pro.R
+import com.simplemobiletools.gallery.pro.dialogs.PickDirectoryDialog
+import com.simplemobiletools.gallery.pro.extensions.*
+import com.simplemobiletools.gallery.pro.helpers.MyWidgetProvider
+import com.simplemobiletools.gallery.pro.models.Directory
+import com.simplemobiletools.gallery.pro.models.Widget
+import kotlinx.android.synthetic.main.activity_widget_config.*
+
+class WidgetConfigureActivity : SimpleActivity() {
+    private var mBgAlpha = 0f
+    private var mWidgetId = 0
+    private var mBgColor = 0
+    private var mBgColorWithoutTransparency = 0
+    private var mTextColor = 0
+    private var mFolderPath = ""
+    private var mDirectories = ArrayList<Directory>()
+
+    public override fun onCreate(savedInstanceState: Bundle?) {
+        useDynamicTheme = false
+        super.onCreate(savedInstanceState)
+        setResult(RESULT_CANCELED)
+        setContentView(R.layout.activity_widget_config)
+        initVariables()
+
+        mWidgetId = intent.extras?.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID) ?: AppWidgetManager.INVALID_APPWIDGET_ID
+
+        if (mWidgetId == AppWidgetManager.INVALID_APPWIDGET_ID) {
+            finish()
+        }
+
+        config_save.setOnClickListener { saveConfig() }
+        config_bg_color.setOnClickListener { pickBackgroundColor() }
+        config_text_color.setOnClickListener { pickTextColor() }
+        folder_picker_value.setOnClickListener { changeSelectedFolder() }
+        config_image_holder.setOnClickListener { changeSelectedFolder() }
+        folder_picker_show_folder_name.isChecked = config.showWidgetFolderName
+        handleFolderNameDisplay()
+        folder_picker_show_folder_name_holder.setOnClickListener {
+            folder_picker_show_folder_name.toggle()
+            handleFolderNameDisplay()
+        }
+
+        updateTextColors(folder_picker_holder)
+        folder_picker_holder.background = ColorDrawable(config.backgroundColor)
+
+        getCachedDirectories(false, false) {
+            mDirectories = it
+            val path = it.firstOrNull()?.path
+            if (path != null) {
+                updateFolderImage(path)
+            }
+        }
+    }
+
+    private fun initVariables() {
+        mBgColor = config.widgetBgColor
+        if (mBgColor == 1) {
+            mBgColor = Color.BLACK
+            mBgAlpha = .2f
+        } else {
+            mBgAlpha = Color.alpha(mBgColor) / 255f
+        }
+
+        mBgColorWithoutTransparency = Color.rgb(Color.red(mBgColor), Color.green(mBgColor), Color.blue(mBgColor))
+        config_bg_seekbar.apply {
+            progress = (mBgAlpha * 100).toInt()
+
+            onSeekBarChangeListener {
+                mBgAlpha = it / 100f
+                updateBackgroundColor()
+            }
+        }
+        updateBackgroundColor()
+
+        mTextColor = config.widgetTextColor
+        updateTextColor()
+    }
+
+    private fun saveConfig() {
+        val views = RemoteViews(packageName, R.layout.widget)
+        views.setBackgroundColor(R.id.widget_holder, mBgColor)
+        AppWidgetManager.getInstance(this).updateAppWidget(mWidgetId, views)
+        config.showWidgetFolderName = folder_picker_show_folder_name.isChecked
+        val widget = Widget(null, mWidgetId, mFolderPath)
+        Thread {
+            widgetsDB.insertOrUpdate(widget)
+        }.start()
+
+        storeWidgetColors()
+        requestWidgetUpdate()
+
+        Intent().apply {
+            putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, mWidgetId)
+            setResult(Activity.RESULT_OK, this)
+        }
+        finish()
+    }
+
+    private fun storeWidgetColors() {
+        config.apply {
+            widgetBgColor = mBgColor
+            widgetTextColor = mTextColor
+        }
+    }
+
+    private fun requestWidgetUpdate() {
+        Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE, null, this, MyWidgetProvider::class.java).apply {
+            putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, intArrayOf(mWidgetId))
+            sendBroadcast(this)
+        }
+    }
+
+    private fun updateBackgroundColor() {
+        mBgColor = mBgColorWithoutTransparency.adjustAlpha(mBgAlpha)
+        config_save.setBackgroundColor(mBgColor)
+        config_image_holder.setBackgroundColor(mBgColor)
+        config_bg_color.setFillWithStroke(mBgColor, Color.BLACK)
+    }
+
+    private fun updateTextColor() {
+        config_save.setTextColor(mTextColor)
+        config_folder_name.setTextColor(mTextColor)
+        config_text_color.setFillWithStroke(mTextColor, Color.BLACK)
+    }
+
+    private fun pickBackgroundColor() {
+        ColorPickerDialog(this, mBgColorWithoutTransparency) { wasPositivePressed, color ->
+            if (wasPositivePressed) {
+                mBgColorWithoutTransparency = color
+                updateBackgroundColor()
+            }
+        }
+    }
+
+    private fun pickTextColor() {
+        ColorPickerDialog(this, mTextColor) { wasPositivePressed, color ->
+            if (wasPositivePressed) {
+                mTextColor = color
+                updateTextColor()
+            }
+        }
+    }
+
+    private fun changeSelectedFolder() {
+        PickDirectoryDialog(this, "", false) {
+            updateFolderImage(it)
+        }
+    }
+
+    private fun updateFolderImage(folderPath: String) {
+        mFolderPath = folderPath
+        runOnUiThread {
+            folder_picker_value.text = getFolderNameFromPath(folderPath)
+            config_folder_name.text = getFolderNameFromPath(folderPath)
+        }
+
+        Thread {
+            val path = directoryDB.getDirectoryThumbnail(folderPath)
+            if (path != null) {
+                runOnUiThread {
+                    loadJpg(path, config_image, config.cropThumbnails)
+                }
+            }
+        }.start()
+    }
+
+    private fun handleFolderNameDisplay() {
+        val showFolderName = folder_picker_show_folder_name.isChecked
+        config_folder_name.beVisibleIf(showFolderName)
+        (config_image.layoutParams as RelativeLayout.LayoutParams).bottomMargin = if (showFolderName) 0 else resources.getDimension(R.dimen.normal_margin).toInt()
+    }
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/adapters/DirectoryAdapter.kt

@@ -1,6 +1,5 @@
-package com.simplemobiletools.gallery.adapters
+package com.simplemobiletools.gallery.pro.adapters
 
-import android.util.SparseArray
 import android.view.Menu
 import android.view.View
 import android.view.ViewGroup
@@ -11,23 +10,22 @@ import com.simplemobiletools.commons.adapters.MyRecyclerViewAdapter
 import com.simplemobiletools.commons.dialogs.ConfirmationDialog
 import com.simplemobiletools.commons.dialogs.PropertiesDialog
 import com.simplemobiletools.commons.dialogs.RenameItemDialog
+import com.simplemobiletools.commons.dialogs.RenameItemsDialog
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.OTG_PATH
 import com.simplemobiletools.commons.models.FileDirItem
 import com.simplemobiletools.commons.views.FastScroller
 import com.simplemobiletools.commons.views.MyRecyclerView
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.dialogs.ExcludeFolderDialog
+import com.simplemobiletools.gallery.pro.dialogs.ExcludeFolderDialog
-import com.simplemobiletools.gallery.dialogs.PickMediumDialog
+import com.simplemobiletools.gallery.pro.dialogs.PickMediumDialog
-import com.simplemobiletools.gallery.extensions.*
+import com.simplemobiletools.gallery.pro.extensions.*
-import com.simplemobiletools.gallery.helpers.*
+import com.simplemobiletools.gallery.pro.helpers.*
-import com.simplemobiletools.gallery.interfaces.DirectoryOperationsListener
+import com.simplemobiletools.gallery.pro.interfaces.DirectoryOperationsListener
-import com.simplemobiletools.gallery.models.AlbumCover
+import com.simplemobiletools.gallery.pro.models.AlbumCover
-import com.simplemobiletools.gallery.models.Directory
+import com.simplemobiletools.gallery.pro.models.Directory
 import kotlinx.android.synthetic.main.directory_item_list.view.*
 import java.io.File
-import java.util.*
-import kotlin.collections.ArrayList
 
 class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directory>, val listener: DirectoryOperationsListener?, recyclerView: MyRecyclerView,
                        val isPickIntent: Boolean, fastScroller: FastScroller? = null, itemClick: (Any) -> Unit) :
@@ -40,6 +38,7 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
     private var showMediaCount = config.showMediaCount
     private var animateGifs = config.animateGifs
     private var cropThumbnails = config.cropThumbnails
+    private var groupDirectSubfolders = config.groupDirectSubfolders
     private var currentDirectoriesHash = dirs.hashCode()
 
     init {
@@ -48,14 +47,6 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
 
     override fun getActionMenuId() = R.menu.cab_directories
 
-    override fun prepareItemSelection(viewHolder: ViewHolder) {
-        viewHolder.itemView.dir_check?.background?.applyColorFilter(primaryColor)
-    }
-
-    override fun markViewHolderSelection(select: Boolean, viewHolder: ViewHolder?) {
-        viewHolder?.itemView?.dir_check?.beVisibleIf(select)
-    }
-
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
         val layoutType = if (isListViewType) R.layout.directory_item_list else R.layout.directory_item_grid
         return createViewHolder(layoutType, parent)
@@ -63,34 +54,35 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
 
     override fun onBindViewHolder(holder: MyRecyclerViewAdapter.ViewHolder, position: Int) {
         val dir = dirs.getOrNull(position) ?: return
-        val view = holder.bindView(dir, true, !isPickIntent) { itemView, adapterPosition ->
+        holder.bindView(dir, true, !isPickIntent) { itemView, adapterPosition ->
             setupView(itemView, dir)
         }
-        bindViewHolder(holder, position, view)
+        bindViewHolder(holder)
     }
 
     override fun getItemCount() = dirs.size
 
     override fun prepareActionMode(menu: Menu) {
-        if (getSelectedPaths().isEmpty()) {
+        val selectedPaths = getSelectedPaths()
+        if (selectedPaths.isEmpty()) {
             return
         }
 
-        val selectedPaths = getSelectedPaths()
+        val isOneItemSelected = isOneItemSelected()
         menu.apply {
-            findItem(R.id.cab_rename).isVisible = isOneItemSelected() && !selectedPaths.contains(FAVORITES) && !selectedPaths.contains(RECYCLE_BIN)
+            findItem(R.id.cab_rename).isVisible = !selectedPaths.contains(FAVORITES) && !selectedPaths.contains(RECYCLE_BIN)
-            findItem(R.id.cab_change_cover_image).isVisible = isOneItemSelected()
+            findItem(R.id.cab_change_cover_image).isVisible = isOneItemSelected
 
-            findItem(R.id.cab_empty_recycle_bin).isVisible = isOneItemSelected() && selectedPaths.first() == RECYCLE_BIN
+            findItem(R.id.cab_empty_recycle_bin).isVisible = isOneItemSelected && selectedPaths.first() == RECYCLE_BIN
-            findItem(R.id.cab_empty_disable_recycle_bin).isVisible = isOneItemSelected() && selectedPaths.first() == RECYCLE_BIN
+            findItem(R.id.cab_empty_disable_recycle_bin).isVisible = isOneItemSelected && selectedPaths.first() == RECYCLE_BIN
 
-            checkHideBtnVisibility(this)
+            checkHideBtnVisibility(this, selectedPaths)
-            checkPinBtnVisibility(this)
+            checkPinBtnVisibility(this, selectedPaths)
         }
     }
 
     override fun actionItemPressed(id: Int) {
-        if (selectedPositions.isEmpty()) {
+        if (selectedKeys.isEmpty()) {
             return
         }
 
@@ -105,7 +97,7 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
             R.id.cab_unhide -> toggleFoldersVisibility(false)
             R.id.cab_exclude -> tryExcludeFolder()
             R.id.cab_copy_to -> copyMoveTo(true)
-            R.id.cab_move_to -> copyMoveTo(false)
+            R.id.cab_move_to -> moveFilesTo()
             R.id.cab_select_all -> selectAll()
             R.id.cab_delete -> askConfirmDelete()
             R.id.cab_select_photo -> changeAlbumCover(false)
@@ -117,49 +109,33 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
 
     override fun getIsItemSelectable(position: Int) = true
 
+    override fun getItemSelectionKey(position: Int) = dirs.getOrNull(position)?.path?.hashCode()
+
+    override fun getItemKeyPosition(key: Int) = dirs.indexOfFirst { it.path.hashCode() == key }
+
     override fun onViewRecycled(holder: ViewHolder) {
         super.onViewRecycled(holder)
-        if (!activity.isActivityDestroyed()) {
+        if (!activity.isDestroyed) {
-            Glide.with(activity).clear(holder.itemView?.dir_thumbnail!!)
+            Glide.with(activity).clear(holder.itemView.dir_thumbnail!!)
         }
     }
 
-    private fun checkHideBtnVisibility(menu: Menu) {
+    private fun checkHideBtnVisibility(menu: Menu, selectedPaths: ArrayList<String>) {
-        var hiddenCnt = 0
+        menu.findItem(R.id.cab_hide).isVisible = selectedPaths.any { !File(it).doesThisOrParentHaveNoMedia() }
-        var unhiddenCnt = 0
+        menu.findItem(R.id.cab_unhide).isVisible = selectedPaths.any { File(it).doesThisOrParentHaveNoMedia() }
-        selectedPositions.mapNotNull { dirs.getOrNull(it)?.path }.forEach {
-            if (File(it).doesThisOrParentHaveNoMedia()) {
-                hiddenCnt++
-            } else {
-                unhiddenCnt++
-            }
     }
 
-        menu.findItem(R.id.cab_hide).isVisible = unhiddenCnt > 0
+    private fun checkPinBtnVisibility(menu: Menu, selectedPaths: ArrayList<String>) {
-        menu.findItem(R.id.cab_unhide).isVisible = hiddenCnt > 0
-    }
-
-    private fun checkPinBtnVisibility(menu: Menu) {
         val pinnedFolders = config.pinnedFolders
-        var pinnedCnt = 0
+        menu.findItem(R.id.cab_pin).isVisible = selectedPaths.any { !pinnedFolders.contains(it) }
-        var unpinnedCnt = 0
+        menu.findItem(R.id.cab_unpin).isVisible = selectedPaths.any { pinnedFolders.contains(it) }
-        selectedPositions.mapNotNull { dirs.getOrNull(it)?.path }.forEach {
-            if (pinnedFolders.contains(it)) {
-                pinnedCnt++
-            } else {
-                unpinnedCnt++
-            }
-        }
-
-        menu.findItem(R.id.cab_pin).isVisible = unpinnedCnt > 0
-        menu.findItem(R.id.cab_unpin).isVisible = pinnedCnt > 0
     }
 
     private fun showProperties() {
-        if (selectedPositions.size <= 1) {
+        if (selectedKeys.size <= 1) {
-            val path = dirs[selectedPositions.first()].path
+            val path = getFirstSelectedItemPath() ?: return
             if (path != FAVORITES && path != RECYCLE_BIN) {
-                PropertiesDialog(activity, dirs[selectedPositions.first()].path, config.shouldShowHidden)
+                PropertiesDialog(activity, path, config.shouldShowHidden)
             }
         } else {
             PropertiesDialog(activity, getSelectedPaths().filter { it != FAVORITES && it != RECYCLE_BIN }.toMutableList(), config.shouldShowHidden)
@@ -167,7 +143,8 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
     }
 
     private fun renameDir() {
-        val firstDir = dirs[selectedPositions.first()]
+        if (selectedKeys.size == 1) {
+            val firstDir = getFirstSelectedItem() ?: return
             val sourcePath = firstDir.path
             val dir = File(sourcePath)
             if (activity.isAStorageRootFolder(dir.absolutePath)) {
@@ -189,6 +166,12 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
                     }.start()
                 }
             }
+        } else {
+            val paths = getSelectedPaths().filter { !activity.isAStorageRootFolder(it) } as ArrayList<String>
+            RenameItemsDialog(activity, paths) {
+                listener?.refreshItems()
+            }
+        }
     }
 
     private fun toggleFoldersVisibility(hide: Boolean) {
@@ -283,18 +266,6 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
                         notifyItemRemoved(it)
                     }
 
-                    val newViewHolders = SparseArray<ViewHolder>()
-                    val cnt = viewHolders.size()
-                    for (i in 0..cnt) {
-                        if (affectedPositions.contains(i)) {
-                            continue
-                        }
-
-                        val view = viewHolders.get(i, null)
-                        val newIndex = i - selectedPositions.count { it <= i }
-                        newViewHolders.put(newIndex, view)
-                    }
-                    viewHolders = newViewHolders
                     currentDirectoriesHash = newDirs.hashCode()
                     dirs = newDirs
 
@@ -330,27 +301,38 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
 
     private fun pinFolders(pin: Boolean) {
         if (pin) {
-            config.addPinnedFolders(getSelectedPaths())
+            config.addPinnedFolders(getSelectedPaths().toHashSet())
         } else {
-            config.removePinnedFolders(getSelectedPaths())
+            config.removePinnedFolders(getSelectedPaths().toHashSet())
         }
 
+        currentDirectoriesHash = 0
         pinnedFolders = config.pinnedFolders
         listener?.recheckPinnedFolders()
-        notifyDataSetChanged()
+    }
-        finishActMode()
+
+    private fun moveFilesTo() {
+        activity.handleDeletePasswordProtection {
+            copyMoveTo(false)
+        }
     }
 
     private fun copyMoveTo(isCopyOperation: Boolean) {
         val paths = ArrayList<String>()
         val showHidden = activity.config.shouldShowHidden
-        selectedPositions.forEach {
+        getSelectedPaths().forEach {
-            val path = dirs[it].path
+            if (it.startsWith(OTG_PATH)) {
-            if (path.startsWith(OTG_PATH)) {
+                paths.addAll(getOTGFilePaths(it, showHidden))
-                paths.addAll(getOTGFilePaths(path, showHidden))
+            } else if (it != FAVORITES) {
-            } else if (path != FAVORITES) {
+                val filter = config.filterMedia
-                File(path).listFiles()?.filter {
+                File(it).listFiles()?.filter {
-                    !activity.getIsPathDirectory(it.absolutePath) && it.isMediaFile() && (showHidden || !it.name.startsWith('.'))
+                    !activity.getIsPathDirectory(it.absolutePath) &&
+                            it.absolutePath.isMediaFile() && (showHidden || !it.name.startsWith('.')) &&
+                            ((it.isImageFast() && filter and TYPE_IMAGES != 0) ||
+                                    (it.isVideoFast() && filter and TYPE_VIDEOS != 0) ||
+                                    (it.isGif() && filter and TYPE_GIFS != 0) ||
+                                    (it.isRawFast() && filter and TYPE_RAWS != 0) ||
+                                    (it.isSvg() && filter and TYPE_SVGS != 0))
                 }?.mapTo(paths) { it.absolutePath }
             }
         }
@@ -365,8 +347,16 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
 
     private fun getOTGFilePaths(path: String, showHidden: Boolean): ArrayList<String> {
         val paths = ArrayList<String>()
-        activity.getOTGFolderChildren(path)?.forEach {
+        val filter = config.filterMedia
-            if (!it.isDirectory && it.name.isMediaFile() && (showHidden || !it.name.startsWith('.'))) {
+        activity.getOTGFolderChildren(path)?.filter { it.name != null }?.forEach {
+            if (!it.isDirectory &&
+                    it.name!!.isMediaFile() && (showHidden || !it.name!!.startsWith('.')) &&
+                    ((it.name!!.isImageFast() && filter and TYPE_IMAGES != 0) ||
+                            (it.name!!.isVideoFast() && filter and TYPE_VIDEOS != 0) ||
+                            (it.name!!.isGif() && filter and TYPE_GIFS != 0) ||
+                            (it.name!!.isRawFast() && filter and TYPE_RAWS != 0) ||
+                            (it.name!!.isSvg() && filter and TYPE_SVGS != 0))
+            ) {
                 val relativePath = it.uri.path.substringAfterLast("${activity.config.OTGPartition}:")
                 paths.add("$OTG_PATH$relativePath")
             }
@@ -375,12 +365,20 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
     }
 
     private fun askConfirmDelete() {
-        if (config.skipDeleteConfirmation) {
+        when {
+            config.isDeletePasswordProtectionOn -> activity.handleDeletePasswordProtection {
                 deleteFolders()
+            }
+            config.skipDeleteConfirmation -> deleteFolders()
+            else -> {
+                val itemsCnt = selectedKeys.size
+                val items = if (itemsCnt == 1) {
+                    "\"${getSelectedPaths().first().getFilenameFromPath()}\""
                 } else {
-            val itemsCnt = selectedPositions.size
+                    resources.getQuantityString(R.plurals.delete_items, itemsCnt, itemsCnt)
-            val items = resources.getQuantityString(R.plurals.delete_items, itemsCnt, itemsCnt)
+                }
-            val fileDirItem = dirs.getOrNull(selectedPositions.first()) ?: return
+
+                val fileDirItem = getFirstSelectedItem() ?: return
                 val baseString = if (!config.useRecycleBin || (isOneItemSelected() && fileDirItem.isRecycleBin()) || (isOneItemSelected() && fileDirItem.areFavorites())) {
                     R.string.deletion_confirmation
                 } else {
@@ -395,31 +393,27 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
                 }
             }
         }
+    }
 
     private fun deleteFolders() {
-        if (selectedPositions.isEmpty()) {
+        if (selectedKeys.isEmpty()) {
             return
         }
 
-        val folders = ArrayList<File>(selectedPositions.size)
-        val removeFolders = ArrayList<Directory>(selectedPositions.size)
-
         var SAFPath = ""
-        selectedPositions.forEach {
+        val selectedDirs = getSelectedItems()
-            if (dirs.size > it) {
+        selectedDirs.forEach {
-                val path = dirs[it].path
+            val path = it.path
             if (activity.needsStupidWritePermissions(path) && config.treeUri.isEmpty()) {
                 SAFPath = path
             }
         }
-        }
 
         activity.handleSAFDialog(SAFPath) {
-            selectedPositions.sortedDescending().forEach {
+            val foldersToDelete = ArrayList<File>(selectedKeys.size)
-                val directory = dirs.getOrNull(it)
+            selectedDirs.forEach {
-                if (directory != null) {
+                if (it.areFavorites() || it.isRecycleBin()) {
-                    if (directory.areFavorites() || directory.isRecycleBin()) {
+                    if (it.isRecycleBin()) {
-                        if (directory.isRecycleBin()) {
                         tryEmptyRecycleBin(false)
                     } else {
                         Thread {
@@ -428,28 +422,23 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
                         }.start()
                     }
 
-                        if (selectedPositions.size == 1) {
+                    if (selectedKeys.size == 1) {
                         finishActMode()
-                        } else {
-                            selectedPositions.remove(it)
-                            toggleItemSelection(false, it)
                     }
                 } else {
-                        folders.add(File(directory.path))
+                    foldersToDelete.add(File(it.path))
-                        removeFolders.add(directory)
-                    }
                 }
             }
 
-            listener?.deleteFolders(folders)
+            listener?.deleteFolders(foldersToDelete)
         }
     }
 
     private fun changeAlbumCover(useDefault: Boolean) {
-        if (selectedPositions.size != 1)
+        if (selectedKeys.size != 1)
             return
 
-        val path = dirs[selectedPositions.first()].path
+        val path = getFirstSelectedItemPath() ?: return
 
         if (useDefault) {
             val albumCovers = getAlbumCoversWithout(path)
@@ -480,15 +469,15 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
         listener?.refreshItems()
     }
 
-    private fun getSelectedPaths(): HashSet<String> {
+    private fun getSelectedItems() = dirs.filter { selectedKeys.contains(it.path.hashCode()) } as ArrayList<Directory>
-        val paths = HashSet<String>(selectedPositions.size)
+
-        selectedPositions.forEach {
+    private fun getSelectedPaths() = getSelectedItems().map { it.path } as ArrayList<String>
-            (dirs.getOrNull(it))?.apply {
+
-                paths.add(path)
+    private fun getFirstSelectedItem() = getItemWithKey(selectedKeys.first())
-            }
+
-        }
+    private fun getFirstSelectedItemPath() = getFirstSelectedItem()?.path
-        return paths
+
-    }
+    private fun getItemWithKey(key: Int): Directory? = dirs.firstOrNull { it.path.hashCode() == key }
 
     fun updateDirs(newDirs: ArrayList<Directory>) {
         val directories = newDirs.clone() as ArrayList<Directory>
@@ -516,10 +505,11 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
     }
 
     private fun setupView(view: View, directory: Directory) {
+        val isSelected = selectedKeys.contains(directory.path.hashCode())
         view.apply {
-            dir_name.text = directory.name
+            dir_name.text = if (groupDirectSubfolders) "${directory.name} (${directory.subfoldersCount})" else directory.name
             dir_path?.text = "${directory.path.substringBeforeLast("/")}/"
-            photo_cnt.text = directory.mediaCnt.toString()
+            photo_cnt.text = directory.subfoldersMediaCount.toString()
             val thumbnailType = when {
                 directory.tmb.isVideoFast() -> TYPE_VIDEOS
                 directory.tmb.isGif() -> TYPE_GIFS
@@ -528,6 +518,11 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
                 else -> TYPE_IMAGES
             }
 
+            dir_check?.beVisibleIf(isSelected)
+            if (isSelected) {
+                dir_check.background?.applyColorFilter(primaryColor)
+            }
+
             activity.loadImage(thumbnailType, directory.tmb, dir_thumbnail, scrollHorizontally, animateGifs, cropThumbnails)
             dir_pin.beVisibleIf(pinnedFolders.contains(directory.path))
             dir_location.beVisibleIf(directory.location != LOCAITON_INTERNAL)

app/src/main/kotlin/com/simplemobiletools/gallery/pro/adapters/FiltersAdapter.kt

@@ -1,37 +1,34 @@
-package com.simplemobiletools.gallery.adapters
+package com.simplemobiletools.gallery.pro.adapters
 
 import android.content.Context
-import android.graphics.drawable.Drawable
-import android.support.v7.widget.RecyclerView
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import com.simplemobiletools.gallery.R
+import androidx.recyclerview.widget.RecyclerView
-import com.simplemobiletools.gallery.interfaces.FilterAdapterListener
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.models.FilterItem
+import com.simplemobiletools.gallery.pro.models.FilterItem
 import kotlinx.android.synthetic.main.editor_filter_item.view.*
 import java.util.*
 
-class FiltersAdapter(val context: Context, val filterItems: ArrayList<FilterItem>, val itemClick: (Int) -> Unit) : RecyclerView.Adapter<FiltersAdapter.ViewHolder>(),
+class FiltersAdapter(val context: Context, val filterItems: ArrayList<FilterItem>, val itemClick: (Int) -> Unit) : RecyclerView.Adapter<FiltersAdapter.ViewHolder>() {
-        FilterAdapterListener {
 
     private var currentSelection = filterItems.first()
     private var strokeBackground = context.resources.getDrawable(R.drawable.stroke_background)
 
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-        holder.bindView(filterItems[position], strokeBackground)
+        holder.bindView(filterItems[position])
     }
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
         val view = LayoutInflater.from(parent.context).inflate(R.layout.editor_filter_item, parent, false)
-        return ViewHolder(view, this)
+        return ViewHolder(view)
     }
 
     override fun getItemCount() = filterItems.size
 
-    override fun getCurrentFilter() = currentSelection
+    fun getCurrentFilter() = currentSelection
 
-    override fun setCurrentFilter(position: Int) {
+    private fun setCurrentFilter(position: Int) {
         val filterItem = filterItems.getOrNull(position) ?: return
         if (currentSelection != filterItem) {
             currentSelection = filterItem
@@ -40,19 +37,19 @@ class FiltersAdapter(val context: Context, val filterItems: ArrayList<FilterItem
         }
     }
 
-    class ViewHolder(view: View, val filterAdapterListener: FilterAdapterListener) : RecyclerView.ViewHolder(view) {
+    inner class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
-        fun bindView(filterItem: FilterItem, strokeBackground: Drawable): View {
+        fun bindView(filterItem: FilterItem): View {
             itemView.apply {
                 editor_filter_item_label.text = filterItem.filter.name
                 editor_filter_item_thumbnail.setImageBitmap(filterItem.bitmap)
-                editor_filter_item_thumbnail.background = if (filterAdapterListener.getCurrentFilter() == filterItem) {
+                editor_filter_item_thumbnail.background = if (getCurrentFilter() == filterItem) {
                     strokeBackground
                 } else {
                     null
                 }
 
                 setOnClickListener {
-                    filterAdapterListener.setCurrentFilter(adapterPosition)
+                    setCurrentFilter(adapterPosition)
                 }
             }
             return itemView

app/src/main/kotlin/com/simplemobiletools/gallery/pro/adapters/ManageFoldersAdapter.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.adapters
+package com.simplemobiletools.gallery.pro.adapters
 
 import android.view.Menu
 import android.view.View
@@ -7,8 +7,8 @@ import com.simplemobiletools.commons.activities.BaseSimpleActivity
 import com.simplemobiletools.commons.adapters.MyRecyclerViewAdapter
 import com.simplemobiletools.commons.interfaces.RefreshRecyclerViewListener
 import com.simplemobiletools.commons.views.MyRecyclerView
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.extensions.config
+import com.simplemobiletools.gallery.pro.extensions.config
 import kotlinx.android.synthetic.main.item_manage_folder.view.*
 import java.util.*
 
@@ -25,12 +25,6 @@ class ManageFoldersAdapter(activity: BaseSimpleActivity, var folders: ArrayList<
 
     override fun prepareActionMode(menu: Menu) {}
 
-    override fun prepareItemSelection(viewHolder: ViewHolder) {}
-
-    override fun markViewHolderSelection(select: Boolean, viewHolder: ViewHolder?) {
-        viewHolder?.itemView?.manage_folder_holder?.isSelected = select
-    }
-
     override fun actionItemPressed(id: Int) {
         when (id) {
             R.id.cab_remove -> removeSelection()
@@ -41,20 +35,27 @@ class ManageFoldersAdapter(activity: BaseSimpleActivity, var folders: ArrayList<
 
     override fun getIsItemSelectable(position: Int) = true
 
+    override fun getItemSelectionKey(position: Int) = folders.getOrNull(position)?.hashCode()
+
+    override fun getItemKeyPosition(key: Int) = folders.indexOfFirst { it.hashCode() == key }
+
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) = createViewHolder(R.layout.item_manage_folder, parent)
 
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
         val folder = folders[position]
-        val view = holder.bindView(folder, true, true) { itemView, adapterPosition ->
+        holder.bindView(folder, true, true) { itemView, adapterPosition ->
             setupView(itemView, folder)
         }
-        bindViewHolder(holder, position, view)
+        bindViewHolder(holder)
     }
 
     override fun getItemCount() = folders.size
 
+    private fun getSelectedItems() = folders.filter { selectedKeys.contains(it.hashCode()) } as ArrayList<String>
+
     private fun setupView(view: View, folder: String) {
         view.apply {
+            manage_folder_holder?.isSelected = selectedKeys.contains(folder.hashCode())
             manage_folder_title.apply {
                 text = folder
                 setTextColor(config.textColor)
@@ -63,20 +64,20 @@ class ManageFoldersAdapter(activity: BaseSimpleActivity, var folders: ArrayList<
     }
 
     private fun removeSelection() {
-        val removeFolders = ArrayList<String>(selectedPositions.size)
+        val removeFolders = ArrayList<String>(selectedKeys.size)
+        val positions = getSelectedItemPositions()
 
-        selectedPositions.sortedDescending().forEach {
+        getSelectedItems().forEach {
-            val folder = folders[it]
+            removeFolders.add(it)
-            removeFolders.add(folder)
             if (isShowingExcludedFolders) {
-                config.removeExcludedFolder(folder)
+                config.removeExcludedFolder(it)
             } else {
-                config.removeIncludedFolder(folder)
+                config.removeIncludedFolder(it)
             }
         }
 
         folders.removeAll(removeFolders)
-        removeSelectedItems()
+        removeSelectedItems(positions)
         if (folders.isEmpty()) {
             listener?.refreshItems()
         }

app/src/main/kotlin/com/simplemobiletools/gallery/pro/adapters/ManageHiddenFoldersAdapter.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.adapters
+package com.simplemobiletools.gallery.pro.adapters
 
 import android.view.Menu
 import android.view.View
@@ -8,9 +8,9 @@ import com.simplemobiletools.commons.adapters.MyRecyclerViewAdapter
 import com.simplemobiletools.commons.extensions.isPathOnSD
 import com.simplemobiletools.commons.interfaces.RefreshRecyclerViewListener
 import com.simplemobiletools.commons.views.MyRecyclerView
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.extensions.config
+import com.simplemobiletools.gallery.pro.extensions.config
-import com.simplemobiletools.gallery.extensions.removeNoMedia
+import com.simplemobiletools.gallery.pro.extensions.removeNoMedia
 import kotlinx.android.synthetic.main.item_manage_folder.view.*
 import java.util.*
 
@@ -27,12 +27,6 @@ class ManageHiddenFoldersAdapter(activity: BaseSimpleActivity, var folders: Arra
 
     override fun prepareActionMode(menu: Menu) {}
 
-    override fun prepareItemSelection(viewHolder: ViewHolder) {}
-
-    override fun markViewHolderSelection(select: Boolean, viewHolder: ViewHolder?) {
-        viewHolder?.itemView?.manage_folder_holder?.isSelected = select
-    }
-
     override fun actionItemPressed(id: Int) {
         when (id) {
             R.id.cab_unhide -> tryUnhideFolders()
@@ -43,20 +37,27 @@ class ManageHiddenFoldersAdapter(activity: BaseSimpleActivity, var folders: Arra
 
     override fun getIsItemSelectable(position: Int) = true
 
+    override fun getItemSelectionKey(position: Int) = folders.getOrNull(position)?.hashCode()
+
+    override fun getItemKeyPosition(key: Int) = folders.indexOfFirst { it.hashCode() == key }
+
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) = createViewHolder(R.layout.item_manage_folder, parent)
 
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
         val folder = folders[position]
-        val view = holder.bindView(folder, true, true) { itemView, adapterPosition ->
+        holder.bindView(folder, true, true) { itemView, adapterPosition ->
             setupView(itemView, folder)
         }
-        bindViewHolder(holder, position, view)
+        bindViewHolder(holder)
     }
 
     override fun getItemCount() = folders.size
 
+    private fun getSelectedItems() = folders.filter { selectedKeys.contains(it.hashCode()) } as ArrayList<String>
+
     private fun setupView(view: View, folder: String) {
         view.apply {
+            manage_folder_holder?.isSelected = selectedKeys.contains(folder.hashCode())
             manage_folder_title.apply {
                 text = folder
                 setTextColor(config.textColor)
@@ -65,12 +66,12 @@ class ManageHiddenFoldersAdapter(activity: BaseSimpleActivity, var folders: Arra
     }
 
     private fun tryUnhideFolders() {
-        val removeFolders = ArrayList<String>(selectedPositions.size)
+        val removeFolders = ArrayList<String>(selectedKeys.size)
 
         val sdCardPaths = ArrayList<String>()
-        selectedPositions.forEach {
+        getSelectedItems().forEach {
-            if (activity.isPathOnSD(folders[it])) {
+            if (activity.isPathOnSD(it)) {
-                sdCardPaths.add(folders[it])
+                sdCardPaths.add(it)
             }
         }
 
@@ -84,14 +85,14 @@ class ManageHiddenFoldersAdapter(activity: BaseSimpleActivity, var folders: Arra
     }
 
     private fun unhideFolders(removeFolders: ArrayList<String>) {
-        selectedPositions.sortedDescending().forEach {
+        val position = getSelectedItemPositions()
-            val folder = folders[it]
+        getSelectedItems().forEach {
-            removeFolders.add(folder)
+            removeFolders.add(it)
-            activity.removeNoMedia(folder)
+            activity.removeNoMedia(it)
         }
 
         folders.removeAll(removeFolders)
-        removeSelectedItems()
+        removeSelectedItems(position)
         if (folders.isEmpty()) {
             listener?.refreshItems()
         }

app/src/main/kotlin/com/simplemobiletools/gallery/pro/adapters/MediaAdapter.kt

@@ -1,50 +1,49 @@
-package com.simplemobiletools.gallery.adapters
+package com.simplemobiletools.gallery.pro.adapters
 
-import android.content.ContentProviderOperation
-import android.media.ExifInterface
 import android.os.Handler
 import android.os.Looper
-import android.provider.MediaStore
 import android.view.Menu
 import android.view.View
 import android.view.ViewGroup
+import android.widget.Toast
 import com.bumptech.glide.Glide
 import com.simplemobiletools.commons.activities.BaseSimpleActivity
 import com.simplemobiletools.commons.adapters.MyRecyclerViewAdapter
 import com.simplemobiletools.commons.dialogs.PropertiesDialog
 import com.simplemobiletools.commons.dialogs.RenameItemDialog
+import com.simplemobiletools.commons.dialogs.RenameItemsDialog
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.OTG_PATH
 import com.simplemobiletools.commons.models.FileDirItem
 import com.simplemobiletools.commons.views.FastScroller
 import com.simplemobiletools.commons.views.MyRecyclerView
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.dialogs.DeleteWithRememberDialog
+import com.simplemobiletools.gallery.pro.dialogs.DeleteWithRememberDialog
-import com.simplemobiletools.gallery.extensions.*
+import com.simplemobiletools.gallery.pro.extensions.*
-import com.simplemobiletools.gallery.helpers.VIEW_TYPE_LIST
+import com.simplemobiletools.gallery.pro.helpers.SHOW_ALL
-import com.simplemobiletools.gallery.interfaces.MediaOperationsListener
+import com.simplemobiletools.gallery.pro.helpers.VIEW_TYPE_LIST
-import com.simplemobiletools.gallery.models.Medium
+import com.simplemobiletools.gallery.pro.interfaces.MediaOperationsListener
-import com.simplemobiletools.gallery.models.ThumbnailItem
+import com.simplemobiletools.gallery.pro.models.Medium
-import com.simplemobiletools.gallery.models.ThumbnailSection
+import com.simplemobiletools.gallery.pro.models.ThumbnailItem
+import com.simplemobiletools.gallery.pro.models.ThumbnailSection
 import kotlinx.android.synthetic.main.photo_video_item_grid.view.*
 import kotlinx.android.synthetic.main.thumbnail_section.view.*
-import java.lang.Exception
-import java.text.SimpleDateFormat
 import java.util.*
 
 class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<ThumbnailItem>, val listener: MediaOperationsListener?, val isAGetIntent: Boolean,
-                   val allowMultiplePicks: Boolean, recyclerView: MyRecyclerView, fastScroller: FastScroller? = null, itemClick: (Any) -> Unit) :
+                   val allowMultiplePicks: Boolean, val path: String, recyclerView: MyRecyclerView, fastScroller: FastScroller? = null, itemClick: (Any) -> Unit) :
         MyRecyclerViewAdapter(activity, recyclerView, fastScroller, itemClick) {
 
     private val INSTANT_LOAD_DURATION = 2000L
     private val IMAGE_LOAD_DELAY = 100L
-    private val BATCH_SIZE = 100
     private val ITEM_SECTION = 0
     private val ITEM_MEDIUM = 1
 
     private val config = activity.config
-    private val isListViewType = config.viewTypeFiles == VIEW_TYPE_LIST
+    private val viewType = config.getFolderViewType(if (config.showAll) SHOW_ALL else path)
+    private val isListViewType = viewType == VIEW_TYPE_LIST
     private var visibleItemPaths = ArrayList<String>()
+    private var rotatedImagePaths = ArrayList<String>()
     private var loadImageInstantly = false
     private var delayHandler = Handler(Looper.getMainLooper())
     private var currentMediaHash = media.hashCode()
@@ -62,14 +61,6 @@ class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<Thumbnai
 
     override fun getActionMenuId() = R.menu.cab_media
 
-    override fun prepareItemSelection(viewHolder: ViewHolder) {
-        viewHolder.itemView?.medium_check?.background?.applyColorFilter(primaryColor)
-    }
-
-    override fun markViewHolderSelection(select: Boolean, viewHolder: ViewHolder?) {
-        viewHolder?.itemView?.medium_check?.beVisibleIf(select)
-    }
-
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
         val layoutType = if (viewType == ITEM_SECTION) {
             R.layout.thumbnail_section
@@ -89,15 +80,15 @@ class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<Thumbnai
             visibleItemPaths.add(tmbItem.path)
         }
 
-        val allowLongPress = !allowMultiplePicks && tmbItem is Medium
+        val allowLongPress = (!isAGetIntent || allowMultiplePicks) && tmbItem is Medium
-        val view = holder.bindView(tmbItem, tmbItem is Medium, allowLongPress) { itemView, adapterPosition ->
+        holder.bindView(tmbItem, tmbItem is Medium, allowLongPress) { itemView, adapterPosition ->
             if (tmbItem is Medium) {
                 setupThumbnail(itemView, tmbItem)
             } else {
                 setupSection(itemView, tmbItem as ThumbnailSection)
             }
         }
-        bindViewHolder(holder, position, view)
+        bindViewHolder(holder)
     }
 
     override fun getItemCount() = media.size
@@ -112,19 +103,26 @@ class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<Thumbnai
     }
 
     override fun prepareActionMode(menu: Menu) {
-        menu.apply {
+        val selectedItems = getSelectedItems()
-            findItem(R.id.cab_rename).isVisible = isOneItemSelected() && getSelectedMedia().firstOrNull()?.getIsInRecycleBin() == false
+        if (selectedItems.isEmpty()) {
-            findItem(R.id.cab_open_with).isVisible = isOneItemSelected()
+            return
-            findItem(R.id.cab_confirm_selection).isVisible = isAGetIntent && allowMultiplePicks && selectedPositions.size > 0
+        }
-            findItem(R.id.cab_restore_recycle_bin_files).isVisible = getSelectedPaths().all { it.startsWith(activity.filesDir.absolutePath) }
 
-            checkHideBtnVisibility(this)
+        val isOneItemSelected = isOneItemSelected()
-            checkFavoriteBtnVisibility(this)
+        val selectedPaths = selectedItems.map { it.path } as ArrayList<String>
+        menu.apply {
+            findItem(R.id.cab_rename).isVisible = selectedItems.firstOrNull()?.getIsInRecycleBin() == false
+            findItem(R.id.cab_open_with).isVisible = isOneItemSelected
+            findItem(R.id.cab_confirm_selection).isVisible = isAGetIntent && allowMultiplePicks && selectedKeys.isNotEmpty()
+            findItem(R.id.cab_restore_recycle_bin_files).isVisible = selectedPaths.all { it.startsWith(activity.recycleBinPath) }
+
+            checkHideBtnVisibility(this, selectedItems)
+            checkFavoriteBtnVisibility(this, selectedItems)
         }
     }
 
     override fun actionItemPressed(id: Int) {
-        if (selectedPositions.isEmpty()) {
+        if (selectedKeys.isEmpty()) {
             return
         }
 
@@ -139,12 +137,15 @@ class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<Thumbnai
             R.id.cab_remove_from_favorites -> toggleFavorites(false)
             R.id.cab_restore_recycle_bin_files -> restoreFiles()
             R.id.cab_share -> shareMedia()
+            R.id.cab_rotate_right -> rotateSelection(90)
+            R.id.cab_rotate_left -> rotateSelection(270)
+            R.id.cab_rotate_one_eighty -> rotateSelection(180)
             R.id.cab_copy_to -> copyMoveTo(true)
-            R.id.cab_move_to -> copyMoveTo(false)
+            R.id.cab_move_to -> moveFilesTo()
             R.id.cab_select_all -> selectAll()
-            R.id.cab_open_with -> activity.openPath(getCurrentPath(), true)
+            R.id.cab_open_with -> openPath()
             R.id.cab_fix_date_taken -> fixDateTaken()
-            R.id.cab_set_as -> activity.setAs(getCurrentPath())
+            R.id.cab_set_as -> setAs()
             R.id.cab_delete -> checkDeleteConfirmation()
         }
     }
@@ -153,12 +154,16 @@ class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<Thumbnai
 
     override fun getIsItemSelectable(position: Int) = !isASectionTitle(position)
 
+    override fun getItemSelectionKey(position: Int) = (media.getOrNull(position) as? Medium)?.path?.hashCode()
+
+    override fun getItemKeyPosition(key: Int) = media.indexOfFirst { (it as? Medium)?.path?.hashCode() == key }
+
     override fun onViewRecycled(holder: ViewHolder) {
         super.onViewRecycled(holder)
-        if (!activity.isActivityDestroyed()) {
+        if (!activity.isDestroyed) {
             val itemView = holder.itemView
-            visibleItemPaths.remove(itemView?.photo_name?.tag)
+            visibleItemPaths.remove(itemView.medium_name?.tag)
-            val tmb = itemView?.medium_thumbnail
+            val tmb = itemView.medium_thumbnail
             if (tmb != null) {
                 Glide.with(activity).clear(tmb)
             }
@@ -167,34 +172,15 @@ class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<Thumbnai
 
     fun isASectionTitle(position: Int) = media.getOrNull(position) is ThumbnailSection
 
-    private fun checkHideBtnVisibility(menu: Menu) {
+    private fun checkHideBtnVisibility(menu: Menu, selectedItems: ArrayList<Medium>) {
-        var hiddenCnt = 0
+        val isInRecycleBin = selectedItems.firstOrNull()?.getIsInRecycleBin() == true
-        var unhiddenCnt = 0
+        menu.findItem(R.id.cab_hide).isVisible = !isInRecycleBin && selectedItems.any { !it.isHidden() }
-        getSelectedMedia().forEach {
+        menu.findItem(R.id.cab_unhide).isVisible = !isInRecycleBin && selectedItems.any { it.isHidden() }
-            if (it.isHidden()) {
-                hiddenCnt++
-            } else {
-                unhiddenCnt++
-            }
     }
 
-        menu.findItem(R.id.cab_hide).isVisible = unhiddenCnt > 0
+    private fun checkFavoriteBtnVisibility(menu: Menu, selectedItems: ArrayList<Medium>) {
-        menu.findItem(R.id.cab_unhide).isVisible = hiddenCnt > 0
+        menu.findItem(R.id.cab_add_to_favorites).isVisible = selectedItems.any { !it.isFavorite }
-    }
+        menu.findItem(R.id.cab_remove_from_favorites).isVisible = selectedItems.any { it.isFavorite }
-
-    private fun checkFavoriteBtnVisibility(menu: Menu) {
-        var favoriteCnt = 0
-        var nonFavoriteCnt = 0
-        getSelectedMedia().forEach {
-            if (it.isFavorite) {
-                favoriteCnt++
-            } else {
-                nonFavoriteCnt++
-            }
-        }
-
-        menu.findItem(R.id.cab_add_to_favorites).isVisible = nonFavoriteCnt > 0
-        menu.findItem(R.id.cab_remove_from_favorites).isVisible = favoriteCnt > 0
     }
 
     private fun confirmSelection() {
@@ -202,8 +188,9 @@ class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<Thumbnai
     }
 
     private fun showProperties() {
-        if (selectedPositions.size <= 1) {
+        if (selectedKeys.size <= 1) {
-            PropertiesDialog(activity, (media[selectedPositions.first()] as Medium).path, config.shouldShowHidden)
+            val path = getFirstSelectedItemPath() ?: return
+            PropertiesDialog(activity, path, config.shouldShowHidden)
         } else {
             val paths = getSelectedPaths()
             PropertiesDialog(activity, paths, config.shouldShowHidden)
@@ -211,7 +198,8 @@ class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<Thumbnai
     }
 
     private fun renameFile() {
-        val oldPath = getCurrentPath()
+        if (selectedKeys.size == 1) {
+            val oldPath = getFirstSelectedItemPath() ?: return
             RenameItemDialog(activity, oldPath) {
                 Thread {
                     activity.updateDBMediaPath(oldPath, it)
@@ -223,15 +211,33 @@ class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<Thumbnai
                     }
                 }.start()
             }
+        } else {
+            RenameItemsDialog(activity, getSelectedPaths()) {
+                enableInstantLoad()
+                listener?.refreshItems()
+                finishActMode()
+            }
+        }
     }
 
     private fun editFile() {
-        activity.openEditor(getCurrentPath())
+        val path = getFirstSelectedItemPath() ?: return
+        activity.openEditor(path)
+    }
+
+    private fun openPath() {
+        val path = getFirstSelectedItemPath() ?: return
+        activity.openPath(path, true)
+    }
+
+    private fun setAs() {
+        val path = getFirstSelectedItemPath() ?: return
+        activity.setAs(path)
     }
 
     private fun toggleFileVisibility(hide: Boolean) {
         Thread {
-            getSelectedMedia().forEach {
+            getSelectedItems().forEach {
                 activity.toggleFileVisibility(it.path, hide)
             }
             activity.runOnUiThread {
@@ -244,7 +250,7 @@ class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<Thumbnai
     private fun toggleFavorites(add: Boolean) {
         Thread {
             val mediumDao = activity.galleryDB.MediumDao()
-            getSelectedMedia().forEach {
+            getSelectedItems().forEach {
                 it.isFavorite = add
                 mediumDao.updateFavorite(it.path, add)
             }
@@ -263,19 +269,55 @@ class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<Thumbnai
     }
 
     private fun shareMedia() {
-        if (selectedPositions.size == 1 && selectedPositions.first() != -1) {
+        if (selectedKeys.size == 1 && selectedKeys.first() != -1) {
-            activity.shareMediumPath(getSelectedMedia().first().path)
+            activity.shareMediumPath(getSelectedItems().first().path)
-        } else if (selectedPositions.size > 1) {
+        } else if (selectedKeys.size > 1) {
             activity.shareMediaPaths(getSelectedPaths())
         }
     }
 
+    private fun rotateSelection(degrees: Int) {
+        activity.toast(R.string.saving)
+        Thread {
+            val paths = getSelectedPaths().filter { it.isImageFast() }
+            var fileCnt = paths.size
+            rotatedImagePaths.clear()
+            paths.forEach {
+                rotatedImagePaths.add(it)
+                activity.saveRotatedImageToFile(it, it, degrees, true) {
+                    fileCnt--
+                    if (fileCnt == 0) {
+                        activity.runOnUiThread {
+                            listener?.refreshItems()
+                            finishActMode()
+                        }
+                    }
+                }
+            }
+        }.start()
+    }
+
+    private fun moveFilesTo() {
+        activity.handleDeletePasswordProtection {
+            copyMoveTo(false)
+        }
+    }
+
     private fun copyMoveTo(isCopyOperation: Boolean) {
         val paths = getSelectedPaths()
 
-        val fileDirItems = paths.map {
+        val recycleBinPath = activity.recycleBinPath
+        val fileDirItems = paths.asSequence().filter { isCopyOperation || !it.startsWith(recycleBinPath) }.map {
             FileDirItem(it, it.getFilenameFromPath())
-        } as ArrayList
+        }.toMutableList() as ArrayList
+
+        if (!isCopyOperation && paths.any { it.startsWith(recycleBinPath) }) {
+            activity.toast(R.string.moving_recycle_bin_items_disabled, Toast.LENGTH_LONG)
+        }
+
+        if (fileDirItems.isEmpty()) {
+            return
+        }
 
         activity.tryCopyMoveFilesTo(fileDirItems, isCopyOperation) {
             config.tempFolderPath = ""
@@ -283,60 +325,26 @@ class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<Thumbnai
             activity.applicationContext.rescanFolderMedia(fileDirItems.first().getParentPath())
             if (!isCopyOperation) {
                 listener?.refreshItems()
+                activity.updateFavoritePaths(fileDirItems, it)
             }
         }
     }
 
     private fun fixDateTaken() {
-        activity.toast(R.string.fixing)
         Thread {
-            try {
+            activity.fixDateTaken(getSelectedPaths()) {
-                val operations = ArrayList<ContentProviderOperation>()
-                val mediumDao = activity.galleryDB.MediumDao()
-                val paths = getSelectedPaths()
-                for (path in paths) {
-                    val dateTime = ExifInterface(path).getAttribute(ExifInterface.TAG_DATETIME_ORIGINAL)
-                            ?: ExifInterface(path).getAttribute(ExifInterface.TAG_DATETIME) ?: continue
-
-                    // some formats contain a "T" in the middle, some don't
-                    // sample dates: 2015-07-26T14:55:23, 2018:09:05 15:09:05
-                    val t = if (dateTime.substring(10, 11) == "T") "\'T\'" else " "
-                    val separator = dateTime.substring(4, 5)
-                    val format = "yyyy${separator}MM${separator}dd${t}kk:mm:ss"
-                    val formatter = SimpleDateFormat(format, Locale.getDefault())
-                    val timestamp = formatter.parse(dateTime).time
-
-                    val uri = activity.getFileUri(path)
-                    ContentProviderOperation.newUpdate(uri).apply {
-                        val selection = "${MediaStore.Images.Media.DATA} = ?"
-                        val selectionArgs = arrayOf(path)
-                        withSelection(selection, selectionArgs)
-                        withValue(MediaStore.Images.Media.DATE_TAKEN, timestamp)
-                        operations.add(build())
-                    }
-
-                    if (operations.size % BATCH_SIZE == 0) {
-                        activity.contentResolver.applyBatch(MediaStore.AUTHORITY, operations)
-                        operations.clear()
-                    }
-
-                    mediumDao.updateFavoriteDateTaken(path, timestamp)
-                }
-
-                activity.contentResolver.applyBatch(MediaStore.AUTHORITY, operations)
-                activity.toast(R.string.dates_fixed_successfully)
-                activity.runOnUiThread {
                 listener?.refreshItems()
                 finishActMode()
             }
-            } catch (e: Exception) {
-                activity.showErrorToast(e)
-            }
         }.start()
     }
 
     private fun checkDeleteConfirmation() {
-        if (config.tempSkipDeleteConfirmation || config.skipDeleteConfirmation) {
+        if (config.isDeletePasswordProtectionOn) {
+            activity.handleDeletePasswordProtection {
+                deleteFiles()
+            }
+        } else if (config.tempSkipDeleteConfirmation || config.skipDeleteConfirmation) {
             deleteFiles()
         } else {
             askConfirmDelete()
@@ -344,8 +352,15 @@ class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<Thumbnai
     }
 
     private fun askConfirmDelete() {
-        val items = resources.getQuantityString(R.plurals.delete_items, selectedPositions.size, selectedPositions.size)
+        val itemsCnt = selectedKeys.size
-        val isRecycleBin = getSelectedPaths().first().startsWith(activity.filesDir.absolutePath)
+        val firstPath = getSelectedPaths().first()
+        val items = if (itemsCnt == 1) {
+            "\"${firstPath.getFilenameFromPath()}\""
+        } else {
+            resources.getQuantityString(R.plurals.delete_items, itemsCnt, itemsCnt)
+        }
+
+        val isRecycleBin = firstPath.startsWith(activity.recycleBinPath)
         val baseString = if (config.useRecycleBin && !isRecycleBin) R.string.move_to_recycle_bin_confirmation else R.string.deletion_confirmation
         val question = String.format(resources.getString(baseString), items)
         DeleteWithRememberDialog(activity, question) {
@@ -354,48 +369,35 @@ class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<Thumbnai
         }
     }
 
-    private fun getCurrentPath() = (media[selectedPositions.first()] as Medium).path
-
     private fun deleteFiles() {
-        if (selectedPositions.isEmpty()) {
+        if (selectedKeys.isEmpty()) {
             return
         }
 
-        val fileDirItems = ArrayList<FileDirItem>(selectedPositions.size)
+        val SAFPath = getSelectedPaths().firstOrNull { activity.isPathOnSD(it) } ?: getFirstSelectedItemPath() ?: return
-        val removeMedia = ArrayList<Medium>(selectedPositions.size)
-
-        if (media.size <= selectedPositions.first()) {
-            finishActMode()
-            return
-        }
-
-        val SAFPath = (media[selectedPositions.first()] as Medium).path
         activity.handleSAFDialog(SAFPath) {
-            selectedPositions.sortedDescending().forEach {
+            val fileDirItems = ArrayList<FileDirItem>(selectedKeys.size)
-                val thumbnailItem = media.getOrNull(it)
+            val removeMedia = ArrayList<Medium>(selectedKeys.size)
-                if (thumbnailItem is Medium) {
+            val positions = getSelectedItemPositions()
-                    fileDirItems.add(FileDirItem(thumbnailItem.path, thumbnailItem.name))
+
-                    removeMedia.add(thumbnailItem)
+            getSelectedItems().forEach {
-                }
+                fileDirItems.add(FileDirItem(it.path, it.name))
+                removeMedia.add(it)
             }
 
             media.removeAll(removeMedia)
             listener?.tryDeleteFiles(fileDirItems)
-            removeSelectedItems()
+            removeSelectedItems(positions)
         }
     }
 
-    private fun getSelectedMedia(): List<Medium> {
+    private fun getSelectedItems() = media.filter { selectedKeys.contains((it as? Medium)?.path?.hashCode()) } as ArrayList<Medium>
-        val selectedMedia = ArrayList<Medium>(selectedPositions.size)
-        selectedPositions.forEach {
-            (media.getOrNull(it) as? Medium)?.apply {
-                selectedMedia.add(this)
-            }
-        }
-        return selectedMedia
-    }
 
-    private fun getSelectedPaths() = getSelectedMedia().map { it.path } as ArrayList<String>
+    private fun getSelectedPaths() = getSelectedItems().map { it.path } as ArrayList<String>
+
+    private fun getFirstSelectedItemPath() = getItemWithKey(selectedKeys.first())?.path
+
+    private fun getItemWithKey(key: Int): Medium? = media.firstOrNull { (it as? Medium)?.path?.hashCode() == key } as? Medium
 
     fun updateMedia(newMedia: ArrayList<ThumbnailItem>) {
         val thumbnailItems = newMedia.clone() as ArrayList<ThumbnailItem>
@@ -436,11 +438,24 @@ class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<Thumbnai
     fun getItemBubbleText(position: Int, sorting: Int) = (media[position] as? Medium)?.getBubbleText(sorting)
 
     private fun setupThumbnail(view: View, medium: Medium) {
+        val isSelected = selectedKeys.contains(medium.path.hashCode())
         view.apply {
             play_outline.beVisibleIf(medium.isVideo())
-            photo_name.beVisibleIf(displayFilenames || isListViewType)
+            medium_name.beVisibleIf(displayFilenames || isListViewType)
-            photo_name.text = medium.name
+            medium_name.text = medium.name
-            photo_name.tag = medium.path
+            medium_name.tag = medium.path
+
+            val showVideoDuration = medium.isVideo() && config.showThumbnailVideoDuration
+            if (showVideoDuration) {
+                video_duration.text = medium.videoDuration.getFormattedDuration()
+                video_duration.setTextColor(textColor)
+            }
+            video_duration.beVisibleIf(showVideoDuration)
+
+            medium_check?.beVisibleIf(isSelected)
+            if (isSelected) {
+                medium_check?.background?.applyColorFilter(primaryColor)
+            }
 
             var path = medium.path
             if (hasOTGConnected && path.startsWith(OTG_PATH)) {
@@ -448,20 +463,20 @@ class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<Thumbnai
             }
 
             if (loadImageInstantly) {
-                activity.loadImage(medium.type, path, medium_thumbnail, scrollHorizontally, animateGifs, cropThumbnails)
+                activity.loadImage(medium.type, path, medium_thumbnail, scrollHorizontally, animateGifs, cropThumbnails, rotatedImagePaths)
             } else {
                 medium_thumbnail.setImageDrawable(null)
                 medium_thumbnail.isHorizontalScrolling = scrollHorizontally
                 delayHandler.postDelayed({
                     val isVisible = visibleItemPaths.contains(medium.path)
                     if (isVisible) {
-                        activity.loadImage(medium.type, path, medium_thumbnail, scrollHorizontally, animateGifs, cropThumbnails)
+                        activity.loadImage(medium.type, path, medium_thumbnail, scrollHorizontally, animateGifs, cropThumbnails, rotatedImagePaths)
                     }
                 }, IMAGE_LOAD_DELAY)
             }
 
             if (isListViewType) {
-                photo_name.setTextColor(textColor)
+                medium_name.setTextColor(textColor)
                 play_outline.applyColorFilter(textColor)
             }
         }

app/src/main/kotlin/com/simplemobiletools/gallery/pro/adapters/MyPagerAdapter.kt

@@ -1,18 +1,18 @@
-package com.simplemobiletools.gallery.adapters
+package com.simplemobiletools.gallery.pro.adapters
 
 import android.os.Bundle
 import android.os.Parcelable
-import android.support.v4.app.Fragment
-import android.support.v4.app.FragmentManager
-import android.support.v4.app.FragmentStatePagerAdapter
-import android.support.v4.view.PagerAdapter
 import android.view.ViewGroup
-import com.simplemobiletools.gallery.activities.ViewPagerActivity
+import androidx.fragment.app.Fragment
-import com.simplemobiletools.gallery.fragments.PhotoFragment
+import androidx.fragment.app.FragmentManager
-import com.simplemobiletools.gallery.fragments.VideoFragment
+import androidx.fragment.app.FragmentStatePagerAdapter
-import com.simplemobiletools.gallery.fragments.ViewPagerFragment
+import androidx.viewpager.widget.PagerAdapter
-import com.simplemobiletools.gallery.helpers.MEDIUM
+import com.simplemobiletools.gallery.pro.activities.ViewPagerActivity
-import com.simplemobiletools.gallery.models.Medium
+import com.simplemobiletools.gallery.pro.fragments.PhotoFragment
+import com.simplemobiletools.gallery.pro.fragments.VideoFragment
+import com.simplemobiletools.gallery.pro.fragments.ViewPagerFragment
+import com.simplemobiletools.gallery.pro.helpers.MEDIUM
+import com.simplemobiletools.gallery.pro.models.Medium
 
 class MyPagerAdapter(val activity: ViewPagerActivity, fm: FragmentManager, val media: MutableList<Medium>) : FragmentStatePagerAdapter(fm) {
     private val fragments = HashMap<Int, ViewPagerFragment>()

app/src/main/kotlin/com/simplemobiletools/gallery/pro/asynctasks/GetMediaAsynctask.kt

@@ -1,16 +1,16 @@
-package com.simplemobiletools.gallery.asynctasks
+package com.simplemobiletools.gallery.pro.asynctasks
 
 import android.content.Context
 import android.os.AsyncTask
 import com.simplemobiletools.commons.helpers.SORT_BY_DATE_TAKEN
-import com.simplemobiletools.gallery.extensions.config
+import com.simplemobiletools.gallery.pro.extensions.config
-import com.simplemobiletools.gallery.extensions.getFavoritePaths
+import com.simplemobiletools.gallery.pro.extensions.getFavoritePaths
-import com.simplemobiletools.gallery.helpers.FAVORITES
+import com.simplemobiletools.gallery.pro.helpers.FAVORITES
-import com.simplemobiletools.gallery.helpers.MediaFetcher
+import com.simplemobiletools.gallery.pro.helpers.MediaFetcher
-import com.simplemobiletools.gallery.helpers.RECYCLE_BIN
+import com.simplemobiletools.gallery.pro.helpers.RECYCLE_BIN
-import com.simplemobiletools.gallery.helpers.SHOW_ALL
+import com.simplemobiletools.gallery.pro.helpers.SHOW_ALL
-import com.simplemobiletools.gallery.models.Medium
+import com.simplemobiletools.gallery.pro.models.Medium
-import com.simplemobiletools.gallery.models.ThumbnailItem
+import com.simplemobiletools.gallery.pro.models.ThumbnailItem
 import java.util.*
 
 class GetMediaAsynctask(val context: Context, val mPath: String, val isPickImage: Boolean = false, val isPickVideo: Boolean = false,
@@ -22,18 +22,19 @@ class GetMediaAsynctask(val context: Context, val mPath: String, val isPickImage
         val pathToUse = if (showAll) SHOW_ALL else mPath
         val getProperDateTaken = context.config.getFileSorting(pathToUse) and SORT_BY_DATE_TAKEN != 0
         val favoritePaths = context.getFavoritePaths()
+        val getVideoDurations = context.config.showThumbnailVideoDuration
         val media = if (showAll) {
             val foldersToScan = mediaFetcher.getFoldersToScan().filter { it != RECYCLE_BIN && it != FAVORITES }
             val media = ArrayList<Medium>()
             foldersToScan.forEach {
-                val newMedia = mediaFetcher.getFilesFrom(it, isPickImage, isPickVideo, getProperDateTaken, favoritePaths)
+                val newMedia = mediaFetcher.getFilesFrom(it, isPickImage, isPickVideo, getProperDateTaken, favoritePaths, getVideoDurations, false)
                 media.addAll(newMedia)
             }
 
             mediaFetcher.sortMedia(media, context.config.getFileSorting(SHOW_ALL))
             media
         } else {
-            mediaFetcher.getFilesFrom(mPath, isPickImage, isPickVideo, getProperDateTaken, favoritePaths)
+            mediaFetcher.getFilesFrom(mPath, isPickImage, isPickVideo, getProperDateTaken, favoritePaths, getVideoDurations)
         }
         return mediaFetcher.groupMedia(media, pathToUse)
     }

app/src/main/kotlin/com/simplemobiletools/gallery/pro/databases/GalleryDatabase.kt

@@ -0,0 +1,60 @@
+package com.simplemobiletools.gallery.pro.databases
+
+import android.content.Context
+import androidx.room.Database
+import androidx.room.Room
+import androidx.room.RoomDatabase
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+import com.simplemobiletools.gallery.pro.interfaces.DirectoryDao
+import com.simplemobiletools.gallery.pro.interfaces.MediumDao
+import com.simplemobiletools.gallery.pro.interfaces.WidgetsDao
+import com.simplemobiletools.gallery.pro.models.Directory
+import com.simplemobiletools.gallery.pro.models.Medium
+import com.simplemobiletools.gallery.pro.models.Widget
+
+@Database(entities = [Directory::class, Medium::class, Widget::class], version = 6)
+abstract class GalleryDatabase : RoomDatabase() {
+
+    abstract fun DirectoryDao(): DirectoryDao
+
+    abstract fun MediumDao(): MediumDao
+
+    abstract fun WidgetsDao(): WidgetsDao
+
+    companion object {
+        private var db: GalleryDatabase? = null
+
+        fun getInstance(context: Context): GalleryDatabase {
+            if (db == null) {
+                synchronized(GalleryDatabase::class) {
+                    if (db == null) {
+                        db = Room.databaseBuilder(context.applicationContext, GalleryDatabase::class.java, "gallery.db")
+                                .fallbackToDestructiveMigration()
+                                .addMigrations(MIGRATION_4_5)
+                                .addMigrations(MIGRATION_5_6)
+                                .build()
+                    }
+                }
+            }
+            return db!!
+        }
+
+        fun destroyInstance() {
+            db = null
+        }
+
+        private val MIGRATION_4_5 = object : Migration(4, 5) {
+            override fun migrate(database: SupportSQLiteDatabase) {
+                database.execSQL("ALTER TABLE media ADD COLUMN video_duration INTEGER default 0 NOT NULL")
+            }
+        }
+
+        private val MIGRATION_5_6 = object : Migration(5, 6) {
+            override fun migrate(database: SupportSQLiteDatabase) {
+                database.execSQL("CREATE TABLE IF NOT EXISTS `widgets` (`id` INTEGER PRIMARY KEY AUTOINCREMENT, `widget_id` INTEGER NOT NULL, `folder_path` TEXT NOT NULL)")
+                database.execSQL("CREATE UNIQUE INDEX `index_widgets_widget_id` ON `widgets` (`widget_id`)")
+            }
+        }
+    }
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/dialogs/ChangeGroupingDialog.kt

@@ -1,14 +1,14 @@
-package com.simplemobiletools.gallery.dialogs
+package com.simplemobiletools.gallery.pro.dialogs
 
 import android.content.DialogInterface
-import android.support.v7.app.AlertDialog
 import android.view.View
+import androidx.appcompat.app.AlertDialog
 import com.simplemobiletools.commons.activities.BaseSimpleActivity
 import com.simplemobiletools.commons.extensions.beVisibleIf
 import com.simplemobiletools.commons.extensions.setupDialogStuff
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.extensions.config
+import com.simplemobiletools.gallery.pro.extensions.config
-import com.simplemobiletools.gallery.helpers.*
+import com.simplemobiletools.gallery.pro.helpers.*
 import kotlinx.android.synthetic.main.dialog_change_grouping.view.*
 
 class ChangeGroupingDialog(val activity: BaseSimpleActivity, val path: String = "", val callback: () -> Unit) :

app/src/main/kotlin/com/simplemobiletools/gallery/pro/dialogs/ChangeSortingDialog.kt

@@ -1,15 +1,15 @@
-package com.simplemobiletools.gallery.dialogs
+package com.simplemobiletools.gallery.pro.dialogs
 
 import android.content.DialogInterface
-import android.support.v7.app.AlertDialog
 import android.view.View
+import androidx.appcompat.app.AlertDialog
 import com.simplemobiletools.commons.activities.BaseSimpleActivity
 import com.simplemobiletools.commons.extensions.beVisibleIf
 import com.simplemobiletools.commons.extensions.setupDialogStuff
 import com.simplemobiletools.commons.helpers.*
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.extensions.config
+import com.simplemobiletools.gallery.pro.extensions.config
-import com.simplemobiletools.gallery.helpers.SHOW_ALL
+import com.simplemobiletools.gallery.pro.helpers.SHOW_ALL
 import kotlinx.android.synthetic.main.dialog_change_sorting.view.*
 
 class ChangeSortingDialog(val activity: BaseSimpleActivity, val isDirectorySorting: Boolean, showFolderCheckbox: Boolean,
@@ -47,6 +47,7 @@ class ChangeSortingDialog(val activity: BaseSimpleActivity, val isDirectorySorti
             currSorting and SORT_BY_SIZE != 0 -> sortingRadio.sorting_dialog_radio_size
             currSorting and SORT_BY_DATE_MODIFIED != 0 -> sortingRadio.sorting_dialog_radio_last_modified
             currSorting and SORT_BY_DATE_TAKEN != 0 -> sortingRadio.sorting_dialog_radio_date_taken
+            currSorting and SORT_BY_RANDOM != 0 -> sortingRadio.sorting_dialog_radio_random
             else -> sortingRadio.sorting_dialog_radio_name
         }
         sortBtn.isChecked = true
@@ -69,6 +70,7 @@ class ChangeSortingDialog(val activity: BaseSimpleActivity, val isDirectorySorti
             R.id.sorting_dialog_radio_path -> SORT_BY_PATH
             R.id.sorting_dialog_radio_size -> SORT_BY_SIZE
             R.id.sorting_dialog_radio_last_modified -> SORT_BY_DATE_MODIFIED
+            R.id.sorting_dialog_radio_random -> SORT_BY_RANDOM
             else -> SORT_BY_DATE_TAKEN
         }
 

app/src/main/kotlin/com/simplemobiletools/gallery/pro/dialogs/ChangeViewTypeDialog.kt

@@ -0,0 +1,73 @@
+package com.simplemobiletools.gallery.pro.dialogs
+
+import android.view.View
+import androidx.appcompat.app.AlertDialog
+import com.simplemobiletools.commons.activities.BaseSimpleActivity
+import com.simplemobiletools.commons.extensions.beVisibleIf
+import com.simplemobiletools.commons.extensions.setupDialogStuff
+import com.simplemobiletools.gallery.pro.R
+import com.simplemobiletools.gallery.pro.extensions.config
+import com.simplemobiletools.gallery.pro.helpers.SHOW_ALL
+import com.simplemobiletools.gallery.pro.helpers.VIEW_TYPE_GRID
+import com.simplemobiletools.gallery.pro.helpers.VIEW_TYPE_LIST
+import kotlinx.android.synthetic.main.dialog_change_view_type.view.*
+
+class ChangeViewTypeDialog(val activity: BaseSimpleActivity, val fromFoldersView: Boolean, val path: String = "", val callback: () -> Unit) {
+    private var view: View
+    private var config = activity.config
+    private var pathToUse = if (path.isEmpty()) SHOW_ALL else path
+
+    init {
+        view = activity.layoutInflater.inflate(R.layout.dialog_change_view_type, null).apply {
+            val viewToCheck = if (fromFoldersView) {
+                if (config.viewTypeFolders == VIEW_TYPE_GRID) {
+                    change_view_type_dialog_radio_grid.id
+                } else {
+                    change_view_type_dialog_radio_list.id
+                }
+            } else {
+                val currViewType = config.getFolderViewType(pathToUse)
+                if (currViewType == VIEW_TYPE_GRID) {
+                    change_view_type_dialog_radio_grid.id
+                } else {
+                    change_view_type_dialog_radio_list.id
+                }
+            }
+
+            change_view_type_dialog_radio.check(viewToCheck)
+            change_view_type_dialog_group_direct_subfolders.apply {
+                beVisibleIf(fromFoldersView)
+                isChecked = config.groupDirectSubfolders
+            }
+
+            change_view_type_dialog_use_for_this_folder.apply {
+                beVisibleIf(!fromFoldersView)
+                isChecked = config.hasCustomViewType(pathToUse)
+            }
+        }
+
+        AlertDialog.Builder(activity)
+                .setPositiveButton(R.string.ok) { dialog, which -> dialogConfirmed() }
+                .setNegativeButton(R.string.cancel, null)
+                .create().apply {
+                    activity.setupDialogStuff(view, this)
+                }
+    }
+
+    private fun dialogConfirmed() {
+        val viewType = if (view.change_view_type_dialog_radio.checkedRadioButtonId == view.change_view_type_dialog_radio_grid.id) VIEW_TYPE_GRID else VIEW_TYPE_LIST
+        if (fromFoldersView) {
+            config.viewTypeFolders = viewType
+            config.groupDirectSubfolders = view.change_view_type_dialog_group_direct_subfolders.isChecked
+        } else {
+            if (view.change_view_type_dialog_use_for_this_folder.isChecked) {
+                config.saveFolderViewType(pathToUse, viewType)
+            } else {
+                config.removeFolderViewType(pathToUse)
+                config.viewTypeFiles = viewType
+            }
+        }
+
+        callback()
+    }
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/dialogs/CustomAspectRatioDialog.kt

@@ -0,0 +1,39 @@
+package com.simplemobiletools.gallery.pro.dialogs
+
+import android.widget.EditText
+import androidx.appcompat.app.AlertDialog
+import com.simplemobiletools.commons.activities.BaseSimpleActivity
+import com.simplemobiletools.commons.extensions.setupDialogStuff
+import com.simplemobiletools.commons.extensions.showKeyboard
+import com.simplemobiletools.commons.extensions.value
+import com.simplemobiletools.gallery.pro.R
+import kotlinx.android.synthetic.main.dialog_custom_aspect_ratio.view.*
+
+class CustomAspectRatioDialog(val activity: BaseSimpleActivity, val defaultCustomAspectRatio: Pair<Int, Int>?, val callback: (aspectRatio: Pair<Int, Int>) -> Unit) {
+    init {
+        val view = activity.layoutInflater.inflate(R.layout.dialog_custom_aspect_ratio, null).apply {
+            aspect_ratio_width.setText(defaultCustomAspectRatio?.first?.toString() ?: "")
+            aspect_ratio_height.setText(defaultCustomAspectRatio?.second?.toString() ?: "")
+        }
+
+        AlertDialog.Builder(activity)
+                .setPositiveButton(R.string.ok, null)
+                .setNegativeButton(R.string.cancel, null)
+                .create().apply {
+                    activity.setupDialogStuff(view, this) {
+                        showKeyboard(view.aspect_ratio_width)
+                        getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener {
+                            val width = getViewValue(view.aspect_ratio_width)
+                            val height = getViewValue(view.aspect_ratio_height)
+                            callback(Pair(width, height))
+                            dismiss()
+                        }
+                    }
+                }
+    }
+
+    private fun getViewValue(view: EditText): Int {
+        val textValue = view.value
+        return if (textValue.isEmpty()) 0 else textValue.toInt()
+    }
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/dialogs/DeleteWithRememberDialog.kt

@@ -1,9 +1,9 @@
-package com.simplemobiletools.gallery.dialogs
+package com.simplemobiletools.gallery.pro.dialogs
 
 import android.app.Activity
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
 import com.simplemobiletools.commons.extensions.setupDialogStuff
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
 import kotlinx.android.synthetic.main.dialog_delete_with_remember.view.*
 
 class DeleteWithRememberDialog(val activity: Activity, val message: String, val callback: (remember: Boolean) -> Unit) {

app/src/main/kotlin/com/simplemobiletools/gallery/pro/dialogs/ExcludeFolderDialog.kt

@@ -1,15 +1,15 @@
-package com.simplemobiletools.gallery.dialogs
+package com.simplemobiletools.gallery.pro.dialogs
 
-import android.support.v7.app.AlertDialog
 import android.view.ViewGroup
 import android.widget.RadioButton
 import android.widget.RadioGroup
+import androidx.appcompat.app.AlertDialog
 import com.simplemobiletools.commons.activities.BaseSimpleActivity
 import com.simplemobiletools.commons.extensions.beVisibleIf
 import com.simplemobiletools.commons.extensions.getBasePath
 import com.simplemobiletools.commons.extensions.setupDialogStuff
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.extensions.config
+import com.simplemobiletools.gallery.pro.extensions.config
 import kotlinx.android.synthetic.main.dialog_exclude_folder.view.*
 
 class ExcludeFolderDialog(val activity: BaseSimpleActivity, val selectedPaths: List<String>, val callback: () -> Unit) {
@@ -34,7 +34,7 @@ class ExcludeFolderDialog(val activity: BaseSimpleActivity, val selectedPaths: L
         }
 
         AlertDialog.Builder(activity)
-                .setPositiveButton(R.string.ok, { dialog, which -> dialogConfirmed() })
+                .setPositiveButton(R.string.ok) { dialog, which -> dialogConfirmed() }
                 .setNegativeButton(R.string.cancel, null)
                 .create().apply {
                     activity.setupDialogStuff(view, this)

app/src/main/kotlin/com/simplemobiletools/gallery/pro/dialogs/FilterMediaDialog.kt

@@ -1,11 +1,11 @@
-package com.simplemobiletools.gallery.dialogs
+package com.simplemobiletools.gallery.pro.dialogs
 
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
 import com.simplemobiletools.commons.activities.BaseSimpleActivity
 import com.simplemobiletools.commons.extensions.setupDialogStuff
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.extensions.config
+import com.simplemobiletools.gallery.pro.extensions.config
-import com.simplemobiletools.gallery.helpers.*
+import com.simplemobiletools.gallery.pro.helpers.*
 import kotlinx.android.synthetic.main.dialog_filter_media.view.*
 
 class FilterMediaDialog(val activity: BaseSimpleActivity, val callback: (result: Int) -> Unit) {

app/src/main/kotlin/com/simplemobiletools/gallery/pro/dialogs/ManageBottomActionsDialog.kt

@@ -1,11 +1,11 @@
-package com.simplemobiletools.gallery.dialogs
+package com.simplemobiletools.gallery.pro.dialogs
 
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
 import com.simplemobiletools.commons.activities.BaseSimpleActivity
 import com.simplemobiletools.commons.extensions.setupDialogStuff
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.extensions.config
+import com.simplemobiletools.gallery.pro.extensions.config
-import com.simplemobiletools.gallery.helpers.*
+import com.simplemobiletools.gallery.pro.helpers.*
 import kotlinx.android.synthetic.main.dialog_manage_bottom_actions.view.*
 
 class ManageBottomActionsDialog(val activity: BaseSimpleActivity, val callback: (result: Int) -> Unit) {
@@ -26,6 +26,7 @@ class ManageBottomActionsDialog(val activity: BaseSimpleActivity, val callback:
             manage_bottom_actions_toggle_visibility.isChecked = actions and BOTTOM_ACTION_TOGGLE_VISIBILITY != 0
             manage_bottom_actions_rename.isChecked = actions and BOTTOM_ACTION_RENAME != 0
             manage_bottom_actions_set_as.isChecked = actions and BOTTOM_ACTION_SET_AS != 0
+            manage_bottom_actions_copy.isChecked = actions and BOTTOM_ACTION_COPY != 0
         }
 
         AlertDialog.Builder(activity)
@@ -63,6 +64,8 @@ class ManageBottomActionsDialog(val activity: BaseSimpleActivity, val callback:
                 result += BOTTOM_ACTION_RENAME
             if (manage_bottom_actions_set_as.isChecked)
                 result += BOTTOM_ACTION_SET_AS
+            if (manage_bottom_actions_copy.isChecked)
+                result += BOTTOM_ACTION_COPY
         }
 
         activity.config.visibleBottomActions = result

app/src/main/kotlin/com/simplemobiletools/gallery/pro/dialogs/ManageExtendedDetailsDialog.kt

@@ -1,11 +1,11 @@
-package com.simplemobiletools.gallery.dialogs
+package com.simplemobiletools.gallery.pro.dialogs
 
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
 import com.simplemobiletools.commons.activities.BaseSimpleActivity
 import com.simplemobiletools.commons.extensions.setupDialogStuff
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.extensions.config
+import com.simplemobiletools.gallery.pro.extensions.config
-import com.simplemobiletools.gallery.helpers.*
+import com.simplemobiletools.gallery.pro.helpers.*
 import kotlinx.android.synthetic.main.dialog_manage_extended_details.view.*
 
 class ManageExtendedDetailsDialog(val activity: BaseSimpleActivity, val callback: (result: Int) -> Unit) {

app/src/main/kotlin/com/simplemobiletools/gallery/pro/dialogs/OtherAspectRatioDialog.kt

@@ -0,0 +1,74 @@
+package com.simplemobiletools.gallery.pro.dialogs
+
+import androidx.appcompat.app.AlertDialog
+import com.simplemobiletools.commons.activities.BaseSimpleActivity
+import com.simplemobiletools.commons.extensions.setupDialogStuff
+import com.simplemobiletools.gallery.pro.R
+import kotlinx.android.synthetic.main.dialog_other_aspect_ratio.view.*
+
+class OtherAspectRatioDialog(val activity: BaseSimpleActivity, val lastOtherAspectRatio: Pair<Int, Int>?, val callback: (aspectRatio: Pair<Int, Int>) -> Unit) {
+    private val dialog: AlertDialog
+
+    init {
+        val view = activity.layoutInflater.inflate(R.layout.dialog_other_aspect_ratio, null).apply {
+            other_aspect_ratio_2_1.setOnClickListener { ratioPicked(Pair(2, 1)) }
+            other_aspect_ratio_3_2.setOnClickListener { ratioPicked(Pair(3, 2)) }
+            other_aspect_ratio_4_3.setOnClickListener { ratioPicked(Pair(4, 3)) }
+            other_aspect_ratio_5_3.setOnClickListener { ratioPicked(Pair(5, 3)) }
+            other_aspect_ratio_16_9.setOnClickListener { ratioPicked(Pair(16, 9)) }
+            other_aspect_ratio_19_9.setOnClickListener { ratioPicked(Pair(19, 9)) }
+            other_aspect_ratio_custom.setOnClickListener { customRatioPicked() }
+
+            other_aspect_ratio_1_2.setOnClickListener { ratioPicked(Pair(1, 2)) }
+            other_aspect_ratio_2_3.setOnClickListener { ratioPicked(Pair(2, 3)) }
+            other_aspect_ratio_3_4.setOnClickListener { ratioPicked(Pair(3, 4)) }
+            other_aspect_ratio_3_5.setOnClickListener { ratioPicked(Pair(3, 5)) }
+            other_aspect_ratio_9_16.setOnClickListener { ratioPicked(Pair(9, 16)) }
+            other_aspect_ratio_9_19.setOnClickListener { ratioPicked(Pair(9, 19)) }
+
+            val radio1SelectedItemId = when (lastOtherAspectRatio) {
+                Pair(2, 1) -> other_aspect_ratio_2_1.id
+                Pair(3, 2) -> other_aspect_ratio_3_2.id
+                Pair(4, 3) -> other_aspect_ratio_4_3.id
+                Pair(5, 3) -> other_aspect_ratio_5_3.id
+                Pair(16, 9) -> other_aspect_ratio_16_9.id
+                Pair(19, 9) -> other_aspect_ratio_19_9.id
+                else -> 0
+            }
+            other_aspect_ratio_dialog_radio_1.check(radio1SelectedItemId)
+
+            val radio2SelectedItemId = when (lastOtherAspectRatio) {
+                Pair(1, 2) -> other_aspect_ratio_1_2.id
+                Pair(2, 3) -> other_aspect_ratio_2_3.id
+                Pair(3, 4) -> other_aspect_ratio_3_4.id
+                Pair(3, 5) -> other_aspect_ratio_3_5.id
+                Pair(9, 16) -> other_aspect_ratio_9_16.id
+                Pair(9, 19) -> other_aspect_ratio_9_19.id
+                else -> 0
+            }
+            other_aspect_ratio_dialog_radio_2.check(radio2SelectedItemId)
+
+            if (radio1SelectedItemId == 0 && radio2SelectedItemId == 0) {
+                other_aspect_ratio_dialog_radio_1.check(other_aspect_ratio_custom.id)
+            }
+        }
+
+        dialog = AlertDialog.Builder(activity)
+                .setNegativeButton(R.string.cancel, null)
+                .create().apply {
+                    activity.setupDialogStuff(view, this)
+                }
+    }
+
+    private fun customRatioPicked() {
+        CustomAspectRatioDialog(activity, lastOtherAspectRatio) {
+            callback(it)
+            dialog.dismiss()
+        }
+    }
+
+    private fun ratioPicked(pair: Pair<Int, Int>) {
+        callback(pair)
+        dialog.dismiss()
+    }
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/dialogs/PickDirectoryDialog.kt

@@ -0,0 +1,151 @@
+package com.simplemobiletools.gallery.pro.dialogs
+
+import android.view.KeyEvent
+import androidx.appcompat.app.AlertDialog
+import androidx.recyclerview.widget.RecyclerView
+import com.simplemobiletools.commons.activities.BaseSimpleActivity
+import com.simplemobiletools.commons.dialogs.FilePickerDialog
+import com.simplemobiletools.commons.extensions.*
+import com.simplemobiletools.commons.views.MyGridLayoutManager
+import com.simplemobiletools.gallery.pro.R
+import com.simplemobiletools.gallery.pro.adapters.DirectoryAdapter
+import com.simplemobiletools.gallery.pro.extensions.*
+import com.simplemobiletools.gallery.pro.helpers.VIEW_TYPE_GRID
+import com.simplemobiletools.gallery.pro.models.Directory
+import kotlinx.android.synthetic.main.dialog_directory_picker.view.*
+
+class PickDirectoryDialog(val activity: BaseSimpleActivity, val sourcePath: String, showOtherFolderButton: Boolean, val callback: (path: String) -> Unit) {
+    private var dialog: AlertDialog
+    private var shownDirectories = ArrayList<Directory>()
+    private var allDirectories = ArrayList<Directory>()
+    private var openedSubfolders = arrayListOf("")
+    private var view = activity.layoutInflater.inflate(R.layout.dialog_directory_picker, null)
+    private var isGridViewType = activity.config.viewTypeFolders == VIEW_TYPE_GRID
+    private var showHidden = activity.config.shouldShowHidden
+    private var currentPathPrefix = ""
+
+    init {
+        (view.directories_grid.layoutManager as MyGridLayoutManager).apply {
+            orientation = if (activity.config.scrollHorizontally && isGridViewType) RecyclerView.HORIZONTAL else RecyclerView.VERTICAL
+            spanCount = if (isGridViewType) activity.config.dirColumnCnt else 1
+        }
+
+        val builder = AlertDialog.Builder(activity)
+                .setPositiveButton(R.string.ok, null)
+                .setNegativeButton(R.string.cancel, null)
+                .setOnKeyListener { dialogInterface, i, keyEvent ->
+                    if (keyEvent.action == KeyEvent.ACTION_UP && i == KeyEvent.KEYCODE_BACK) {
+                        backPressed()
+                    }
+                    true
+                }
+
+        if (showOtherFolderButton) {
+            builder.setNeutralButton(R.string.other_folder) { dialogInterface, i -> showOtherFolder() }
+        }
+
+        dialog = builder.create().apply {
+            activity.setupDialogStuff(view, this, R.string.select_destination) {
+                view.directories_show_hidden.beVisibleIf(!context.config.shouldShowHidden)
+                view.directories_show_hidden.setOnClickListener {
+                    activity.handleHiddenFolderPasswordProtection {
+                        view.directories_show_hidden.beGone()
+                        showHidden = true
+                        fetchDirectories(true)
+                    }
+                }
+            }
+        }
+
+        fetchDirectories(false)
+    }
+
+    private fun fetchDirectories(forceShowHidden: Boolean) {
+        activity.getCachedDirectories(forceShowHidden = forceShowHidden) {
+            if (it.isNotEmpty()) {
+                it.forEach {
+                    it.subfoldersMediaCount = it.mediaCnt
+                }
+
+                activity.runOnUiThread {
+                    gotDirectories(activity.addTempFolderIfNeeded(it))
+                }
+            }
+        }
+    }
+
+    private fun showOtherFolder() {
+        FilePickerDialog(activity, sourcePath, false, showHidden, true, true) {
+            callback(it)
+        }
+    }
+
+    private fun gotDirectories(newDirs: ArrayList<Directory>) {
+        if (allDirectories.isEmpty()) {
+            allDirectories = newDirs.clone() as ArrayList<Directory>
+        }
+        val distinctDirs = newDirs.distinctBy { it.path.getDistinctPath() }.toMutableList() as ArrayList<Directory>
+        val sortedDirs = activity.getSortedDirectories(distinctDirs)
+        val dirs = activity.getDirsToShow(sortedDirs, allDirectories, currentPathPrefix).clone() as ArrayList<Directory>
+        if (dirs.hashCode() == shownDirectories.hashCode()) {
+            return
+        }
+
+        shownDirectories = dirs
+        val adapter = DirectoryAdapter(activity, dirs.clone() as ArrayList<Directory>, null, view.directories_grid, true) {
+            val clickedDir = it as Directory
+            val path = clickedDir.path
+            if (clickedDir.subfoldersCount == 1 || !activity.config.groupDirectSubfolders) {
+                if (path.trimEnd('/') == sourcePath) {
+                    activity.toast(R.string.source_and_destination_same)
+                    return@DirectoryAdapter
+                } else {
+                    callback(path)
+                    dialog.dismiss()
+                }
+            } else {
+                currentPathPrefix = path
+                openedSubfolders.add(path)
+                gotDirectories(allDirectories)
+            }
+        }
+
+        val scrollHorizontally = activity.config.scrollHorizontally && isGridViewType
+        val sorting = activity.config.directorySorting
+        view.apply {
+            directories_grid.adapter = adapter
+
+            directories_vertical_fastscroller.isHorizontal = false
+            directories_vertical_fastscroller.beGoneIf(scrollHorizontally)
+
+            directories_horizontal_fastscroller.isHorizontal = true
+            directories_horizontal_fastscroller.beVisibleIf(scrollHorizontally)
+
+            if (scrollHorizontally) {
+                directories_horizontal_fastscroller.allowBubbleDisplay = activity.config.showInfoBubble
+                directories_horizontal_fastscroller.setViews(directories_grid) {
+                    directories_horizontal_fastscroller.updateBubbleText(dirs[it].getBubbleText(sorting))
+                }
+            } else {
+                directories_vertical_fastscroller.allowBubbleDisplay = activity.config.showInfoBubble
+                directories_vertical_fastscroller.setViews(directories_grid) {
+                    directories_vertical_fastscroller.updateBubbleText(dirs[it].getBubbleText(sorting))
+                }
+            }
+        }
+    }
+
+    private fun backPressed() {
+        if (activity.config.groupDirectSubfolders) {
+            if (currentPathPrefix.isEmpty()) {
+                dialog.dismiss()
+            } else {
+                openedSubfolders.removeAt(openedSubfolders.size - 1)
+                currentPathPrefix = openedSubfolders.last()
+                gotDirectories(allDirectories)
+            }
+        } else {
+            dialog.dismiss()
+        }
+    }
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/dialogs/PickMediumDialog.kt

@@ -1,32 +1,33 @@
-package com.simplemobiletools.gallery.dialogs
+package com.simplemobiletools.gallery.pro.dialogs
 
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
-import android.support.v7.widget.GridLayoutManager
+import androidx.recyclerview.widget.RecyclerView
 import com.simplemobiletools.commons.activities.BaseSimpleActivity
 import com.simplemobiletools.commons.extensions.beGoneIf
 import com.simplemobiletools.commons.extensions.beVisibleIf
 import com.simplemobiletools.commons.extensions.setupDialogStuff
 import com.simplemobiletools.commons.views.MyGridLayoutManager
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.adapters.MediaAdapter
+import com.simplemobiletools.gallery.pro.adapters.MediaAdapter
-import com.simplemobiletools.gallery.asynctasks.GetMediaAsynctask
+import com.simplemobiletools.gallery.pro.asynctasks.GetMediaAsynctask
-import com.simplemobiletools.gallery.extensions.config
+import com.simplemobiletools.gallery.pro.extensions.config
-import com.simplemobiletools.gallery.extensions.getCachedMedia
+import com.simplemobiletools.gallery.pro.extensions.getCachedMedia
-import com.simplemobiletools.gallery.helpers.SHOW_ALL
+import com.simplemobiletools.gallery.pro.helpers.SHOW_ALL
-import com.simplemobiletools.gallery.helpers.VIEW_TYPE_GRID
+import com.simplemobiletools.gallery.pro.helpers.VIEW_TYPE_GRID
-import com.simplemobiletools.gallery.models.Medium
+import com.simplemobiletools.gallery.pro.models.Medium
-import com.simplemobiletools.gallery.models.ThumbnailItem
+import com.simplemobiletools.gallery.pro.models.ThumbnailItem
 import kotlinx.android.synthetic.main.dialog_medium_picker.view.*
 
 class PickMediumDialog(val activity: BaseSimpleActivity, val path: String, val callback: (path: String) -> Unit) {
     var dialog: AlertDialog
     var shownMedia = ArrayList<ThumbnailItem>()
     val view = activity.layoutInflater.inflate(R.layout.dialog_medium_picker, null)
-    var isGridViewType = activity.config.viewTypeFiles == VIEW_TYPE_GRID
+    val viewType = activity.config.getFolderViewType(if (activity.config.showAll) SHOW_ALL else path)
+    var isGridViewType = viewType == VIEW_TYPE_GRID
 
     init {
         (view.media_grid.layoutManager as MyGridLayoutManager).apply {
-            orientation = if (activity.config.scrollHorizontally && isGridViewType) GridLayoutManager.HORIZONTAL else GridLayoutManager.VERTICAL
+            orientation = if (activity.config.scrollHorizontally && isGridViewType) RecyclerView.HORIZONTAL else RecyclerView.VERTICAL
             spanCount = if (isGridViewType) activity.config.mediaColumnCnt else 1
         }
 
@@ -53,7 +54,7 @@ class PickMediumDialog(val activity: BaseSimpleActivity, val path: String, val c
     }
 
     private fun showOtherFolder() {
-        PickDirectoryDialog(activity, path) {
+        PickDirectoryDialog(activity, path, true) {
             callback(it)
             dialog.dismiss()
         }
@@ -64,7 +65,7 @@ class PickMediumDialog(val activity: BaseSimpleActivity, val path: String, val c
             return
 
         shownMedia = media
-        val adapter = MediaAdapter(activity, shownMedia.clone() as ArrayList<ThumbnailItem>, null, true, false, view.media_grid, null) {
+        val adapter = MediaAdapter(activity, shownMedia.clone() as ArrayList<ThumbnailItem>, null, true, false, path, view.media_grid, null) {
             if (it is Medium) {
                 callback(it.path)
                 dialog.dismiss()

app/src/main/kotlin/com/simplemobiletools/gallery/pro/dialogs/ResizeDialog.kt

@@ -0,0 +1,76 @@
+package com.simplemobiletools.gallery.pro.dialogs
+
+import android.graphics.Point
+import android.widget.EditText
+import androidx.appcompat.app.AlertDialog
+import com.simplemobiletools.commons.activities.BaseSimpleActivity
+import com.simplemobiletools.commons.extensions.*
+import com.simplemobiletools.gallery.pro.R
+import kotlinx.android.synthetic.main.dialog_resize_image.view.*
+
+class ResizeDialog(val activity: BaseSimpleActivity, val size: Point, val callback: (newSize: Point) -> Unit) {
+    init {
+        val view = activity.layoutInflater.inflate(R.layout.dialog_resize_image, null)
+        val widthView = view.image_width
+        val heightView = view.image_height
+
+        widthView.setText(size.x.toString())
+        heightView.setText(size.y.toString())
+
+        val ratio = size.x / size.y.toFloat()
+
+        widthView.onTextChangeListener {
+            if (widthView.hasFocus()) {
+                var width = getViewValue(widthView)
+                if (width > size.x) {
+                    widthView.setText(size.x.toString())
+                    width = size.x
+                }
+
+                if (view.keep_aspect_ratio.isChecked) {
+                    heightView.setText((width / ratio).toInt().toString())
+                }
+            }
+        }
+
+        heightView.onTextChangeListener {
+            if (heightView.hasFocus()) {
+                var height = getViewValue(heightView)
+                if (height > size.y) {
+                    heightView.setText(size.y.toString())
+                    height = size.y
+                }
+
+                if (view.keep_aspect_ratio.isChecked) {
+                    widthView.setText((height * ratio).toInt().toString())
+                }
+            }
+        }
+
+        AlertDialog.Builder(activity)
+                .setPositiveButton(R.string.ok, null)
+                .setNegativeButton(R.string.cancel, null)
+                .create().apply {
+                    activity.setupDialogStuff(view, this, R.string.resize_and_save) {
+                        showKeyboard(view.image_width)
+                        getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener {
+                            val width = getViewValue(widthView)
+                            val height = getViewValue(heightView)
+                            if (width <= 0 || height <= 0) {
+                                activity.toast(R.string.invalid_values)
+                                return@setOnClickListener
+                            }
+
+                            val newSize = Point(getViewValue(widthView), getViewValue(heightView))
+                            callback(newSize)
+                            dismiss()
+                        }
+                    }
+                }
+    }
+
+    private fun getViewValue(view: EditText): Int {
+        val textValue = view.value
+        return if (textValue.isEmpty()) 0 else textValue.toInt()
+    }
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/dialogs/SaveAsDialog.kt

@@ -1,11 +1,11 @@
-package com.simplemobiletools.gallery.dialogs
+package com.simplemobiletools.gallery.pro.dialogs
 
-import android.support.v7.app.AlertDialog
+import androidx.appcompat.app.AlertDialog
 import com.simplemobiletools.commons.activities.BaseSimpleActivity
 import com.simplemobiletools.commons.dialogs.ConfirmationDialog
 import com.simplemobiletools.commons.dialogs.FilePickerDialog
 import com.simplemobiletools.commons.extensions.*
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
 import kotlinx.android.synthetic.main.dialog_save_as.view.*
 
 class SaveAsDialog(val activity: BaseSimpleActivity, val path: String, val appendFilename: Boolean, val callback: (savePath: String) -> Unit) {
@@ -32,7 +32,7 @@ class SaveAsDialog(val activity: BaseSimpleActivity, val path: String, val appen
 
             save_as_name.setText(name)
             save_as_path.setOnClickListener {
-                FilePickerDialog(activity, realPath, false, false, true) {
+                FilePickerDialog(activity, realPath, false, false, true, true) {
                     save_as_path.text = activity.humanizePath(it)
                     realPath = it
                 }

app/src/main/kotlin/com/simplemobiletools/gallery/pro/dialogs/SlideshowDialog.kt

@@ -1,14 +1,13 @@
-package com.simplemobiletools.gallery.dialogs
+package com.simplemobiletools.gallery.pro.dialogs
 
-import android.support.v7.app.AlertDialog
 import android.view.View
+import androidx.appcompat.app.AlertDialog
 import com.simplemobiletools.commons.activities.BaseSimpleActivity
 import com.simplemobiletools.commons.extensions.hideKeyboard
 import com.simplemobiletools.commons.extensions.setupDialogStuff
-import com.simplemobiletools.commons.extensions.toast
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.extensions.config
-import com.simplemobiletools.gallery.extensions.config
+import com.simplemobiletools.gallery.pro.helpers.SLIDESHOW_DEFAULT_INTERVAL
-import com.simplemobiletools.gallery.helpers.SLIDESHOW_DEFAULT_INTERVAL
 import kotlinx.android.synthetic.main.dialog_slideshow.view.*
 
 class SlideshowDialog(val activity: BaseSimpleActivity, val callback: () -> Unit) {
@@ -29,11 +28,6 @@ class SlideshowDialog(val activity: BaseSimpleActivity, val callback: () -> Unit
                     activity.hideKeyboard(v)
             }
 
-            include_photos_holder.setOnClickListener {
-                interval_value.clearFocus()
-                include_photos.toggle()
-            }
-
             include_videos_holder.setOnClickListener {
                 interval_value.clearFocus()
                 include_videos.toggle()
@@ -73,11 +67,6 @@ class SlideshowDialog(val activity: BaseSimpleActivity, val callback: () -> Unit
                     activity.setupDialogStuff(view, this) {
                         hideKeyboard()
                         getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener {
-                            if (!view.include_photos.isChecked && !view.include_videos.isChecked && !view.include_gifs.isChecked) {
-                                activity.toast(R.string.no_media_for_slideshow)
-                                return@setOnClickListener
-                            }
-
                             storeValues()
                             callback()
                             dismiss()
@@ -90,7 +79,6 @@ class SlideshowDialog(val activity: BaseSimpleActivity, val callback: () -> Unit
         val config = activity.config
         view.apply {
             interval_value.setText(config.slideshowInterval.toString())
-            include_photos.isChecked = config.slideshowIncludePhotos
             include_videos.isChecked = config.slideshowIncludeVideos
             include_gifs.isChecked = config.slideshowIncludeGIFs
             random_order.isChecked = config.slideshowRandomOrder
@@ -107,7 +95,6 @@ class SlideshowDialog(val activity: BaseSimpleActivity, val callback: () -> Unit
 
         activity.config.apply {
             slideshowInterval = interval.toInt()
-            slideshowIncludePhotos = view.include_photos.isChecked
             slideshowIncludeVideos = view.include_videos.isChecked
             slideshowIncludeGIFs = view.include_gifs.isChecked
             slideshowRandomOrder = view.random_order.isChecked

app/src/main/kotlin/com/simplemobiletools/gallery/pro/extensions/Activity.kt

@@ -0,0 +1,490 @@
+package com.simplemobiletools.gallery.pro.extensions
+
+import android.annotation.TargetApi
+import android.app.Activity
+import android.content.ContentProviderOperation
+import android.content.Intent
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
+import android.graphics.Matrix
+import android.media.ExifInterface
+import android.os.Build
+import android.provider.MediaStore
+import android.util.DisplayMetrics
+import android.view.View
+import androidx.appcompat.app.AppCompatActivity
+import com.bumptech.glide.Glide
+import com.simplemobiletools.commons.activities.BaseSimpleActivity
+import com.simplemobiletools.commons.dialogs.ConfirmationDialog
+import com.simplemobiletools.commons.extensions.*
+import com.simplemobiletools.commons.helpers.*
+import com.simplemobiletools.commons.models.FAQItem
+import com.simplemobiletools.commons.models.FileDirItem
+import com.simplemobiletools.gallery.pro.BuildConfig
+import com.simplemobiletools.gallery.pro.R
+import com.simplemobiletools.gallery.pro.activities.SimpleActivity
+import com.simplemobiletools.gallery.pro.dialogs.PickDirectoryDialog
+import com.simplemobiletools.gallery.pro.helpers.NOMEDIA
+import com.simplemobiletools.gallery.pro.helpers.RECYCLE_BIN
+import com.simplemobiletools.gallery.pro.interfaces.MediumDao
+import com.squareup.picasso.Picasso
+import java.io.File
+import java.io.FileOutputStream
+import java.io.InputStream
+import java.io.OutputStream
+import java.text.SimpleDateFormat
+import java.util.*
+
+fun Activity.sharePath(path: String) {
+    sharePathIntent(path, BuildConfig.APPLICATION_ID)
+}
+
+fun Activity.sharePaths(paths: ArrayList<String>) {
+    sharePathsIntent(paths, BuildConfig.APPLICATION_ID)
+}
+
+fun Activity.shareMediumPath(path: String) {
+    sharePath(path)
+}
+
+fun Activity.shareMediaPaths(paths: ArrayList<String>) {
+    sharePaths(paths)
+}
+
+fun Activity.setAs(path: String) {
+    setAsIntent(path, BuildConfig.APPLICATION_ID)
+}
+
+fun Activity.openPath(path: String, forceChooser: Boolean) {
+    openPathIntent(path, forceChooser, BuildConfig.APPLICATION_ID)
+}
+
+fun Activity.openEditor(path: String, forceChooser: Boolean = false) {
+    openEditorIntent(path, forceChooser, BuildConfig.APPLICATION_ID)
+}
+
+fun Activity.launchCamera() {
+    val intent = Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA)
+    if (intent.resolveActivity(packageManager) != null) {
+        startActivity(intent)
+    } else {
+        toast(R.string.no_app_found)
+    }
+}
+
+fun SimpleActivity.launchAbout() {
+    val licenses = LICENSE_GLIDE or LICENSE_CROPPER or LICENSE_RTL or LICENSE_SUBSAMPLING or LICENSE_PATTERN or LICENSE_REPRINT or LICENSE_GIF_DRAWABLE or
+            LICENSE_PICASSO or LICENSE_EXOPLAYER or LICENSE_PANORAMA_VIEW or LICENSE_SANSELAN or LICENSE_FILTERS or LICENSE_GESTURE_VIEWS
+
+    val faqItems = arrayListOf(
+            FAQItem(R.string.faq_5_title_commons, R.string.faq_5_text_commons),
+            FAQItem(R.string.faq_1_title, R.string.faq_1_text),
+            FAQItem(R.string.faq_2_title, R.string.faq_2_text),
+            FAQItem(R.string.faq_3_title, R.string.faq_3_text),
+            FAQItem(R.string.faq_4_title, R.string.faq_4_text),
+            FAQItem(R.string.faq_5_title, R.string.faq_5_text),
+            FAQItem(R.string.faq_6_title, R.string.faq_6_text),
+            FAQItem(R.string.faq_7_title, R.string.faq_7_text),
+            FAQItem(R.string.faq_8_title, R.string.faq_8_text),
+            FAQItem(R.string.faq_10_title, R.string.faq_10_text),
+            FAQItem(R.string.faq_11_title, R.string.faq_11_text),
+            FAQItem(R.string.faq_12_title, R.string.faq_12_text),
+            FAQItem(R.string.faq_13_title, R.string.faq_13_text),
+            FAQItem(R.string.faq_14_title, R.string.faq_14_text),
+            FAQItem(R.string.faq_2_title_commons, R.string.faq_2_text_commons),
+            FAQItem(R.string.faq_6_title_commons, R.string.faq_6_text_commons))
+
+    startAboutActivity(R.string.app_name, licenses, BuildConfig.VERSION_NAME, faqItems, true)
+}
+
+fun AppCompatActivity.showSystemUI(toggleActionBarVisibility: Boolean) {
+    if (toggleActionBarVisibility) {
+        supportActionBar?.show()
+    }
+
+    window.decorView.systemUiVisibility = View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
+            View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION or
+            View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+}
+
+fun AppCompatActivity.hideSystemUI(toggleActionBarVisibility: Boolean) {
+    if (toggleActionBarVisibility) {
+        supportActionBar?.hide()
+    }
+
+    window.decorView.systemUiVisibility = View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
+            View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION or
+            View.SYSTEM_UI_FLAG_HIDE_NAVIGATION or
+            View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN or
+            View.SYSTEM_UI_FLAG_LOW_PROFILE or
+            View.SYSTEM_UI_FLAG_FULLSCREEN or
+            View.SYSTEM_UI_FLAG_IMMERSIVE
+}
+
+fun BaseSimpleActivity.addNoMedia(path: String, callback: () -> Unit) {
+    val file = File(path, NOMEDIA)
+    if (file.exists()) {
+        callback()
+        return
+    }
+
+    if (needsStupidWritePermissions(path)) {
+        handleSAFDialog(file.absolutePath) {
+            val fileDocument = getDocumentFile(path)
+            if (fileDocument?.exists() == true && fileDocument.isDirectory) {
+                fileDocument.createFile("", NOMEDIA)
+                applicationContext.scanFileRecursively(file) {
+                    callback()
+                }
+            } else {
+                toast(R.string.unknown_error_occurred)
+                callback()
+            }
+        }
+    } else {
+        try {
+            file.createNewFile()
+            applicationContext.scanFileRecursively(file) {
+                callback()
+            }
+        } catch (e: Exception) {
+            showErrorToast(e)
+            callback()
+        }
+    }
+}
+
+fun BaseSimpleActivity.removeNoMedia(path: String, callback: (() -> Unit)? = null) {
+    val file = File(path, NOMEDIA)
+    if (!file.exists()) {
+        callback?.invoke()
+        return
+    }
+
+    tryDeleteFileDirItem(file.toFileDirItem(applicationContext), false, false) {
+        scanPathRecursively(file.parent)
+        callback?.invoke()
+    }
+}
+
+fun BaseSimpleActivity.toggleFileVisibility(oldPath: String, hide: Boolean, callback: ((newPath: String) -> Unit)? = null) {
+    val path = oldPath.getParentPath()
+    var filename = oldPath.getFilenameFromPath()
+    if ((hide && filename.startsWith('.')) || (!hide && !filename.startsWith('.'))) {
+        callback?.invoke(oldPath)
+        return
+    }
+
+    filename = if (hide) {
+        ".${filename.trimStart('.')}"
+    } else {
+        filename.substring(1, filename.length)
+    }
+
+    val newPath = "$path/$filename"
+    renameFile(oldPath, newPath) {
+        callback?.invoke(newPath)
+        Thread {
+            updateDBMediaPath(oldPath, newPath)
+        }.start()
+    }
+}
+
+fun BaseSimpleActivity.tryCopyMoveFilesTo(fileDirItems: ArrayList<FileDirItem>, isCopyOperation: Boolean, callback: (destinationPath: String) -> Unit) {
+    if (fileDirItems.isEmpty()) {
+        toast(R.string.unknown_error_occurred)
+        return
+    }
+
+    val source = fileDirItems[0].getParentPath()
+    PickDirectoryDialog(this, source, true) {
+        copyMoveFilesTo(fileDirItems, source.trimEnd('/'), it, isCopyOperation, true, config.shouldShowHidden, callback)
+    }
+}
+
+fun BaseSimpleActivity.tryDeleteFileDirItem(fileDirItem: FileDirItem, allowDeleteFolder: Boolean = false, deleteFromDatabase: Boolean,
+                                            callback: ((wasSuccess: Boolean) -> Unit)? = null) {
+    deleteFile(fileDirItem, allowDeleteFolder) {
+        if (deleteFromDatabase) {
+            Thread {
+                deleteDBPath(galleryDB.MediumDao(), fileDirItem.path)
+                runOnUiThread {
+                    callback?.invoke(it)
+                }
+            }.start()
+        } else {
+            callback?.invoke(it)
+        }
+    }
+}
+
+fun BaseSimpleActivity.movePathsInRecycleBin(paths: ArrayList<String>, mediumDao: MediumDao = galleryDB.MediumDao(), callback: ((wasSuccess: Boolean) -> Unit)?) {
+    Thread {
+        var pathsCnt = paths.size
+        paths.forEach {
+            val file = File(it)
+            val internalFile = File(recycleBinPath, it)
+            try {
+                if (file.copyRecursively(internalFile, true)) {
+                    mediumDao.updateDeleted("$RECYCLE_BIN$it", System.currentTimeMillis(), it)
+                    pathsCnt--
+                }
+            } catch (e: Exception) {
+                showErrorToast(e)
+                return@forEach
+            }
+        }
+        callback?.invoke(pathsCnt == 0)
+    }.start()
+}
+
+fun BaseSimpleActivity.restoreRecycleBinPath(path: String, callback: () -> Unit) {
+    restoreRecycleBinPaths(arrayListOf(path), galleryDB.MediumDao(), callback)
+}
+
+fun BaseSimpleActivity.restoreRecycleBinPaths(paths: ArrayList<String>, mediumDao: MediumDao = galleryDB.MediumDao(), callback: () -> Unit) {
+    Thread {
+        val newPaths = ArrayList<String>()
+        paths.forEach {
+            val source = it
+            val destination = it.removePrefix(recycleBinPath)
+
+            var inputStream: InputStream? = null
+            var out: OutputStream? = null
+            try {
+                out = getFileOutputStreamSync(destination, source.getMimeType())
+                inputStream = getFileInputStreamSync(source)!!
+                inputStream.copyTo(out!!)
+                if (File(source).length() == File(destination).length()) {
+                    mediumDao.updateDeleted(destination.removePrefix(recycleBinPath), 0, "$RECYCLE_BIN$destination")
+                }
+                newPaths.add(destination)
+            } catch (e: Exception) {
+                showErrorToast(e)
+            } finally {
+                inputStream?.close()
+                out?.close()
+            }
+        }
+
+        runOnUiThread {
+            callback()
+        }
+
+        fixDateTaken(newPaths)
+    }.start()
+}
+
+fun BaseSimpleActivity.emptyTheRecycleBin(callback: (() -> Unit)? = null) {
+    Thread {
+        recycleBin.deleteRecursively()
+        galleryDB.MediumDao().clearRecycleBin()
+        galleryDB.DirectoryDao().deleteRecycleBin()
+        toast(R.string.recycle_bin_emptied)
+        callback?.invoke()
+    }.start()
+}
+
+fun BaseSimpleActivity.emptyAndDisableTheRecycleBin(callback: () -> Unit) {
+    Thread {
+        emptyTheRecycleBin {
+            config.useRecycleBin = false
+            callback()
+        }
+    }.start()
+}
+
+fun BaseSimpleActivity.showRecycleBinEmptyingDialog(callback: () -> Unit) {
+    ConfirmationDialog(this, "", R.string.empty_recycle_bin_confirmation, R.string.yes, R.string.no) {
+        callback()
+    }
+}
+
+fun BaseSimpleActivity.updateFavoritePaths(fileDirItems: ArrayList<FileDirItem>, destination: String) {
+    Thread {
+        fileDirItems.forEach {
+            val newPath = "$destination/${it.name}"
+            updateDBMediaPath(it.path, newPath)
+        }
+    }.start()
+}
+
+fun Activity.hasNavBar(): Boolean {
+    val display = windowManager.defaultDisplay
+
+    val realDisplayMetrics = DisplayMetrics()
+    display.getRealMetrics(realDisplayMetrics)
+
+    val displayMetrics = DisplayMetrics()
+    display.getMetrics(displayMetrics)
+
+    return (realDisplayMetrics.widthPixels - displayMetrics.widthPixels > 0) || (realDisplayMetrics.heightPixels - displayMetrics.heightPixels > 0)
+}
+
+fun Activity.fixDateTaken(paths: ArrayList<String>, callback: (() -> Unit)? = null) {
+    val BATCH_SIZE = 50
+    toast(R.string.fixing)
+    try {
+        var didUpdateFile = false
+        val operations = ArrayList<ContentProviderOperation>()
+        val mediumDao = galleryDB.MediumDao()
+        for (path in paths) {
+            val dateTime = ExifInterface(path).getAttribute(ExifInterface.TAG_DATETIME_ORIGINAL)
+                    ?: ExifInterface(path).getAttribute(ExifInterface.TAG_DATETIME) ?: continue
+
+            // some formats contain a "T" in the middle, some don't
+            // sample dates: 2015-07-26T14:55:23, 2018:09:05 15:09:05
+            val t = if (dateTime.substring(10, 11) == "T") "\'T\'" else " "
+            val separator = dateTime.substring(4, 5)
+            val format = "yyyy${separator}MM${separator}dd${t}kk:mm:ss"
+            val formatter = SimpleDateFormat(format, Locale.getDefault())
+            val timestamp = formatter.parse(dateTime).time
+
+            val uri = getFileUri(path)
+            ContentProviderOperation.newUpdate(uri).apply {
+                val selection = "${MediaStore.Images.Media.DATA} = ?"
+                val selectionArgs = arrayOf(path)
+                withSelection(selection, selectionArgs)
+                withValue(MediaStore.Images.Media.DATE_TAKEN, timestamp)
+                operations.add(build())
+            }
+
+            if (operations.size % BATCH_SIZE == 0) {
+                contentResolver.applyBatch(MediaStore.AUTHORITY, operations)
+                operations.clear()
+            }
+
+            mediumDao.updateFavoriteDateTaken(path, timestamp)
+            didUpdateFile = true
+        }
+
+        val resultSize = contentResolver.applyBatch(MediaStore.AUTHORITY, operations).size
+        if (resultSize == 0) {
+            didUpdateFile = false
+            rescanPaths(paths)
+        }
+
+        toast(if (didUpdateFile) R.string.dates_fixed_successfully else R.string.unknown_error_occurred)
+        runOnUiThread {
+            callback?.invoke()
+        }
+    } catch (e: Exception) {
+        showErrorToast(e)
+    }
+}
+
+fun BaseSimpleActivity.saveRotatedImageToFile(oldPath: String, newPath: String, degrees: Int, showToasts: Boolean, callback: () -> Unit) {
+    var newDegrees = degrees
+    if (newDegrees < 0) {
+        newDegrees += 360
+    }
+
+    if (oldPath == newPath && oldPath.isJpg()) {
+        if (tryRotateByExif(oldPath, newDegrees, showToasts, callback)) {
+            return
+        }
+    }
+
+    val tmpPath = "$recycleBinPath/.tmp_${newPath.getFilenameFromPath()}"
+    val tmpFileDirItem = FileDirItem(tmpPath, tmpPath.getFilenameFromPath())
+    try {
+        getFileOutputStream(tmpFileDirItem) {
+            if (it == null) {
+                if (showToasts) {
+                    toast(R.string.unknown_error_occurred)
+                }
+                return@getFileOutputStream
+            }
+
+            val oldLastModified = File(oldPath).lastModified()
+            if (oldPath.isJpg()) {
+                copyFile(oldPath, tmpPath)
+                saveExifRotation(ExifInterface(tmpPath), newDegrees)
+            } else {
+                val inputstream = getFileInputStreamSync(oldPath)
+                val bitmap = BitmapFactory.decodeStream(inputstream)
+                saveFile(tmpPath, bitmap, it as FileOutputStream, newDegrees)
+            }
+
+            if (getDoesFilePathExist(newPath)) {
+                tryDeleteFileDirItem(FileDirItem(newPath, newPath.getFilenameFromPath()), false, true)
+            }
+
+            copyFile(tmpPath, newPath)
+            scanPathRecursively(newPath)
+            fileRotatedSuccessfully(newPath, oldLastModified)
+
+            it.flush()
+            it.close()
+            callback.invoke()
+        }
+    } catch (e: OutOfMemoryError) {
+        if (showToasts) {
+            toast(R.string.out_of_memory_error)
+        }
+    } catch (e: Exception) {
+        if (showToasts) {
+            showErrorToast(e)
+        }
+    } finally {
+        tryDeleteFileDirItem(tmpFileDirItem, false, true)
+    }
+}
+
+@TargetApi(Build.VERSION_CODES.N)
+fun Activity.tryRotateByExif(path: String, degrees: Int, showToasts: Boolean, callback: () -> Unit): Boolean {
+    return try {
+        val file = File(path)
+        val oldLastModified = file.lastModified()
+        if (saveImageRotation(path, degrees)) {
+            fileRotatedSuccessfully(path, oldLastModified)
+            callback.invoke()
+            if (showToasts) {
+                toast(R.string.file_saved)
+            }
+            true
+        } else {
+            false
+        }
+    } catch (e: Exception) {
+        if (showToasts) {
+            showErrorToast(e)
+        }
+        false
+    }
+}
+
+fun Activity.fileRotatedSuccessfully(path: String, lastModified: Long) {
+    if (config.keepLastModified) {
+        File(path).setLastModified(lastModified)
+        updateLastModified(path, lastModified)
+    }
+
+    Picasso.get().invalidate(path.getFileKey())
+    // we cannot refresh a specific image in Glide Cache, so just clear it all
+    val glide = Glide.get(applicationContext)
+    glide.clearDiskCache()
+    runOnUiThread {
+        glide.clearMemory()
+    }
+}
+
+fun BaseSimpleActivity.copyFile(source: String, destination: String) {
+    var inputStream: InputStream? = null
+    var out: OutputStream? = null
+    try {
+        out = getFileOutputStreamSync(destination, source.getMimeType())
+        inputStream = getFileInputStreamSync(source)
+        inputStream?.copyTo(out!!)
+    } finally {
+        inputStream?.close()
+        out?.close()
+    }
+}
+
+fun saveFile(path: String, bitmap: Bitmap, out: FileOutputStream, degrees: Int) {
+    val matrix = Matrix()
+    matrix.postRotate(degrees.toFloat())
+    val bmp = Bitmap.createBitmap(bitmap, 0, 0, bitmap.width, bitmap.height, matrix, true)
+    bmp.compress(path.getCompressionFormat(), 90, out)
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/extensions/ArrayList.kt

@@ -1,7 +1,7 @@
-package com.simplemobiletools.gallery.extensions
+package com.simplemobiletools.gallery.pro.extensions
 
-import com.simplemobiletools.gallery.helpers.*
+import com.simplemobiletools.gallery.pro.helpers.*
-import com.simplemobiletools.gallery.models.Medium
+import com.simplemobiletools.gallery.pro.models.Medium
 
 fun ArrayList<Medium>.getDirMediaTypes(): Int {
     var types = 0

app/src/main/kotlin/com/simplemobiletools/gallery/pro/extensions/Context.kt

@@ -1,5 +1,7 @@
-package com.simplemobiletools.gallery.extensions
+package com.simplemobiletools.gallery.pro.extensions
 
+import android.appwidget.AppWidgetManager
+import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
 import android.content.res.Configuration
@@ -8,7 +10,6 @@ import android.database.sqlite.SQLiteException
 import android.graphics.Point
 import android.graphics.drawable.PictureDrawable
 import android.media.AudioManager
-import android.os.Build
 import android.provider.MediaStore
 import android.view.WindowManager
 import android.widget.ImageView
@@ -19,20 +20,28 @@ import com.bumptech.glide.load.resource.drawable.DrawableTransitionOptions
 import com.bumptech.glide.request.RequestOptions
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.*
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.activities.SettingsActivity
+import com.simplemobiletools.gallery.pro.activities.SettingsActivity
-import com.simplemobiletools.gallery.asynctasks.GetMediaAsynctask
+import com.simplemobiletools.gallery.pro.asynctasks.GetMediaAsynctask
-import com.simplemobiletools.gallery.databases.GalleryDatabase
+import com.simplemobiletools.gallery.pro.databases.GalleryDatabase
-import com.simplemobiletools.gallery.helpers.*
+import com.simplemobiletools.gallery.pro.helpers.*
-import com.simplemobiletools.gallery.interfaces.DirectoryDao
+import com.simplemobiletools.gallery.pro.interfaces.DirectoryDao
-import com.simplemobiletools.gallery.interfaces.MediumDao
+import com.simplemobiletools.gallery.pro.interfaces.MediumDao
-import com.simplemobiletools.gallery.models.Directory
+import com.simplemobiletools.gallery.pro.interfaces.WidgetsDao
-import com.simplemobiletools.gallery.models.Medium
+import com.simplemobiletools.gallery.pro.models.Directory
-import com.simplemobiletools.gallery.models.ThumbnailItem
+import com.simplemobiletools.gallery.pro.models.Medium
-import com.simplemobiletools.gallery.svg.SvgSoftwareLayerSetter
+import com.simplemobiletools.gallery.pro.models.ThumbnailItem
-import com.simplemobiletools.gallery.views.MySquareImageView
+import com.simplemobiletools.gallery.pro.svg.SvgSoftwareLayerSetter
+import com.simplemobiletools.gallery.pro.views.MySquareImageView
 import pl.droidsonroids.gif.GifDrawable
 import java.io.File
+import java.io.FileInputStream
+import java.nio.ByteBuffer
+import java.nio.channels.FileChannel
+import java.util.HashSet
+import java.util.LinkedHashSet
+import kotlin.Comparator
+import kotlin.collections.ArrayList
 
 val Context.portrait get() = resources.configuration.orientation == Configuration.ORIENTATION_PORTRAIT
 val Context.audioManager get() = getSystemService(Context.AUDIO_SERVICE) as AudioManager
@@ -44,11 +53,40 @@ val Context.navigationBarWidth: Int get() = if (navigationBarRight) navigationBa
 
 internal val Context.navigationBarSize: Point
     get() = when {
-        navigationBarRight -> Point(realScreenSize.x - usableScreenSize.x, usableScreenSize.y)
+        navigationBarRight -> Point(newNavigationBarHeight, usableScreenSize.y)
-        navigationBarBottom -> Point(usableScreenSize.x, realScreenSize.y - usableScreenSize.y)
+        navigationBarBottom -> Point(usableScreenSize.x, newNavigationBarHeight)
         else -> Point()
     }
 
+internal val Context.newNavigationBarHeight: Int
+    get() {
+        var navigationBarHeight = 0
+        val resourceId = resources.getIdentifier("navigation_bar_height", "dimen", "android")
+        if (resourceId > 0) {
+            navigationBarHeight = resources.getDimensionPixelSize(resourceId)
+        }
+        return navigationBarHeight
+    }
+
+internal val Context.statusBarHeight: Int
+    get() {
+        var statusBarHeight = 0
+        val resourceId = resources.getIdentifier("status_bar_height", "dimen", "android")
+        if (resourceId > 0) {
+            statusBarHeight = resources.getDimensionPixelSize(resourceId)
+        }
+        return statusBarHeight
+    }
+
+internal val Context.actionBarHeight: Int
+    get() {
+        val styledAttributes = theme.obtainStyledAttributes(intArrayOf(android.R.attr.actionBarSize))
+        val actionBarHeight = styledAttributes.getDimension(0, 0f)
+        styledAttributes.recycle()
+        return actionBarHeight.toInt()
+    }
+
+
 val Context.usableScreenSize: Point
     get() {
         val size = Point()
@@ -59,7 +97,6 @@ val Context.usableScreenSize: Point
 val Context.realScreenSize: Point
     get() {
         val size = Point()
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1)
         windowManager.defaultDisplay.getRealSize(size)
         return size
     }
@@ -77,6 +114,14 @@ val Context.config: Config get() = Config.newInstance(applicationContext)
 
 val Context.galleryDB: GalleryDatabase get() = GalleryDatabase.getInstance(applicationContext)
 
+val Context.widgetsDB: WidgetsDao get() = GalleryDatabase.getInstance(applicationContext).WidgetsDao()
+
+val Context.directoryDB: DirectoryDao get() = GalleryDatabase.getInstance(applicationContext).DirectoryDao()
+
+val Context.recycleBin: File get() = filesDir
+
+val Context.recycleBinPath: String get() = filesDir.absolutePath
+
 fun Context.movePinnedDirectoriesToFront(dirs: ArrayList<Directory>): ArrayList<Directory> {
     val foundFolders = ArrayList<Directory>()
     val pinnedFolders = config.pinnedFolders
@@ -96,6 +141,14 @@ fun Context.movePinnedDirectoriesToFront(dirs: ArrayList<Directory>): ArrayList<
             dirs.add(0, newFolder)
         }
     }
+
+    if (config.useRecycleBin && config.showRecycleBinAtFolders && config.showRecycleBinLast) {
+        val binIndex = dirs.indexOfFirst { it.isRecycleBin() }
+        if (binIndex != -1) {
+            val bin = dirs.removeAt(binIndex)
+            dirs.add(bin)
+        }
+    }
     return dirs
 }
 
@@ -104,6 +157,11 @@ fun Context.getSortedDirectories(source: ArrayList<Directory>): ArrayList<Direct
     val sorting = config.directorySorting
     val dirs = source.clone() as ArrayList<Directory>
 
+    if (sorting and SORT_BY_RANDOM != 0) {
+        dirs.shuffle()
+        return movePinnedDirectoriesToFront(dirs)
+    }
+
     dirs.sortWith(Comparator { o1, o2 ->
         o1 as Directory
         o2 as Directory
@@ -124,6 +182,120 @@ fun Context.getSortedDirectories(source: ArrayList<Directory>): ArrayList<Direct
     return movePinnedDirectoriesToFront(dirs)
 }
 
+fun Context.getDirsToShow(dirs: ArrayList<Directory>, allDirs: ArrayList<Directory>, currentPathPrefix: String): ArrayList<Directory> {
+    return if (config.groupDirectSubfolders) {
+        dirs.forEach {
+            it.subfoldersCount = 0
+            it.subfoldersMediaCount = it.mediaCnt
+        }
+
+        val dirFolders = dirs.map { it.path }.sorted().toMutableSet() as HashSet<String>
+        val foldersToShow = getDirectParentSubfolders(dirFolders, currentPathPrefix)
+        val parentDirs = dirs.filter { foldersToShow.contains(it.path) } as ArrayList<Directory>
+        updateSubfolderCounts(dirs, parentDirs)
+
+        // show the current folder as an available option too, not just subfolders
+        if (currentPathPrefix.isNotEmpty()) {
+            val currentFolder = allDirs.firstOrNull { parentDirs.firstOrNull { it.path == currentPathPrefix } == null && it.path == currentPathPrefix }
+            currentFolder?.apply {
+                subfoldersCount = 1
+                parentDirs.add(this)
+            }
+        }
+
+        parentDirs
+    } else {
+        dirs.forEach { it.subfoldersMediaCount = it.mediaCnt }
+        dirs
+    }
+}
+
+fun Context.getDirectParentSubfolders(folders: HashSet<String>, currentPathPrefix: String): HashSet<String> {
+    val internalPath = internalStoragePath
+    val sdPath = sdCardPath
+    val currentPaths = LinkedHashSet<String>()
+
+    folders.forEach {
+        val path = it
+        if (path != RECYCLE_BIN && path != FAVORITES && !path.equals(internalPath, true) && !path.equals(sdPath, true)) {
+            if (currentPathPrefix.isNotEmpty()) {
+                if (path == currentPathPrefix || File(path).parent.equals(currentPathPrefix, true)) {
+                    currentPaths.add(path)
+                }
+            } else if (folders.any { !it.equals(path, true) && (File(path).parent.equals(it, true) || File(it).parent.equals(File(path).parent, true)) }) {
+                // if we have folders like
+                // /storage/emulated/0/Pictures/Images and
+                // /storage/emulated/0/Pictures/Screenshots,
+                // but /storage/emulated/0/Pictures is empty, show Images and Screenshots as separate folders, do not group them at /Pictures
+                val parent = File(path).parent
+                if (folders.contains(parent)) {
+                    currentPaths.add(parent)
+                } else {
+                    currentPaths.add(path)
+                }
+            } else {
+                currentPaths.add(path)
+            }
+        }
+    }
+
+    var areDirectSubfoldersAvailable = false
+    currentPaths.forEach {
+        val path = it
+        currentPaths.forEach {
+            if (!it.equals(path) && File(it).parent?.equals(path) == true) {
+                areDirectSubfoldersAvailable = true
+            }
+        }
+    }
+
+    if (currentPathPrefix.isEmpty() && folders.contains(RECYCLE_BIN)) {
+        currentPaths.add(RECYCLE_BIN)
+    }
+
+    if (currentPathPrefix.isEmpty() && folders.contains(FAVORITES)) {
+        currentPaths.add(FAVORITES)
+    }
+
+    if (folders.size == currentPaths.size) {
+        return currentPaths
+    }
+
+    folders.clear()
+    folders.addAll(currentPaths)
+    return if (areDirectSubfoldersAvailable) {
+        getDirectParentSubfolders(folders, currentPathPrefix)
+    } else {
+        folders
+    }
+}
+
+fun Context.updateSubfolderCounts(children: ArrayList<Directory>, parentDirs: ArrayList<Directory>) {
+    for (child in children) {
+        var longestSharedPath = ""
+        for (parentDir in parentDirs) {
+            if (parentDir.path == child.path) {
+                longestSharedPath = child.path
+                continue
+            }
+
+            if (child.path.startsWith(parentDir.path, true) && parentDir.path.length > longestSharedPath.length) {
+                longestSharedPath = parentDir.path
+            }
+        }
+
+        // make sure we count only the proper direct subfolders, grouped the same way as on the main screen
+        parentDirs.firstOrNull { it.path == longestSharedPath }?.apply {
+            if (path.equals(child.path, true) || path.equals(File(child.path).parent, true) || children.any { it.path.equals(File(child.path).parent, true) }) {
+                subfoldersCount++
+                if (path != child.path) {
+                    subfoldersMediaCount += child.mediaCnt
+                }
+            }
+        }
+    }
+}
+
 fun Context.getNoMediaFolders(callback: (folders: ArrayList<String>) -> Unit) {
     Thread {
         val folders = ArrayList<String>()
@@ -174,7 +346,7 @@ fun Context.rescanFolderMediaSync(path: String) {
                     if (!newMedia.contains(it)) {
                         val mediumPath = (it as? Medium)?.path
                         if (mediumPath != null) {
-                            mediumDao.deleteMediumPath(mediumPath)
+                            deleteDBPath(mediumDao, mediumPath)
                         }
                     }
                 }
@@ -190,10 +362,21 @@ fun Context.storeDirectoryItems(items: ArrayList<Directory>, directoryDao: Direc
 }
 
 fun Context.checkAppendingHidden(path: String, hidden: String, includedFolders: MutableSet<String>): String {
-    val dirName = when (path) {
+    val dirName = getFolderNameFromPath(path)
+    return if (File(path).doesThisOrParentHaveNoMedia() && !path.isThisOrParentIncluded(includedFolders)) {
+        "$dirName $hidden"
+    } else {
+        dirName
+    }
+}
+
+fun Context.getFolderNameFromPath(path: String): String {
+    return when (path) {
         internalStoragePath -> getString(R.string.internal)
         sdCardPath -> getString(R.string.sd_card)
-        OTG_PATH -> getString(R.string.otg)
+        OTG_PATH -> getString(R.string.usb)
+        FAVORITES -> getString(R.string.favorites)
+        RECYCLE_BIN -> getString(R.string.recycle_bin)
         else -> {
             if (path.startsWith(OTG_PATH)) {
                 path.trimEnd('/').substringAfterLast('/')
@@ -202,21 +385,16 @@ fun Context.checkAppendingHidden(path: String, hidden: String, includedFolders:
             }
         }
     }
-
-    return if (File(path).doesThisOrParentHaveNoMedia() && !path.isThisOrParentIncluded(includedFolders)) {
-        "$dirName $hidden"
-    } else {
-        dirName
-    }
 }
 
-fun Context.loadImage(type: Int, path: String, target: MySquareImageView, horizontalScroll: Boolean, animateGifs: Boolean, cropThumbnails: Boolean) {
+fun Context.loadImage(type: Int, path: String, target: MySquareImageView, horizontalScroll: Boolean, animateGifs: Boolean, cropThumbnails: Boolean,
+                      skipMemoryCacheAtPaths: ArrayList<String>? = null) {
     target.isHorizontalScrolling = horizontalScroll
     if (type == TYPE_IMAGES || type == TYPE_VIDEOS || type == TYPE_RAWS) {
         if (type == TYPE_IMAGES && path.isPng()) {
-            loadPng(path, target, cropThumbnails)
+            loadPng(path, target, cropThumbnails, skipMemoryCacheAtPaths)
         } else {
-            loadJpg(path, target, cropThumbnails)
+            loadJpg(path, target, cropThumbnails, skipMemoryCacheAtPaths)
         }
     } else if (type == TYPE_GIFS) {
         try {
@@ -230,9 +408,9 @@ fun Context.loadImage(type: Int, path: String, target: MySquareImageView, horizo
 
             target.scaleType = if (cropThumbnails) ImageView.ScaleType.CENTER_CROP else ImageView.ScaleType.FIT_CENTER
         } catch (e: Exception) {
-            loadJpg(path, target, cropThumbnails)
+            loadJpg(path, target, cropThumbnails, skipMemoryCacheAtPaths)
         } catch (e: OutOfMemoryError) {
-            loadJpg(path, target, cropThumbnails)
+            loadJpg(path, target, cropThumbnails, skipMemoryCacheAtPaths)
         }
     } else if (type == TYPE_SVGS) {
         loadSVG(path, target, cropThumbnails)
@@ -258,9 +436,10 @@ fun Context.getPathLocation(path: String): Int {
     }
 }
 
-fun Context.loadPng(path: String, target: MySquareImageView, cropThumbnails: Boolean) {
+fun Context.loadPng(path: String, target: MySquareImageView, cropThumbnails: Boolean, skipMemoryCacheAtPaths: ArrayList<String>? = null) {
     val options = RequestOptions()
             .signature(path.getFileSignature())
+            .skipMemoryCache(skipMemoryCacheAtPaths?.contains(path) == true)
             .diskCacheStrategy(DiskCacheStrategy.RESOURCE)
             .format(DecodeFormat.PREFER_ARGB_8888)
 
@@ -272,9 +451,10 @@ fun Context.loadPng(path: String, target: MySquareImageView, cropThumbnails: Boo
     builder.apply(options).into(target)
 }
 
-fun Context.loadJpg(path: String, target: MySquareImageView, cropThumbnails: Boolean) {
+fun Context.loadJpg(path: String, target: MySquareImageView, cropThumbnails: Boolean, skipMemoryCacheAtPaths: ArrayList<String>? = null) {
     val options = RequestOptions()
             .signature(path.getFileSignature())
+            .skipMemoryCache(skipMemoryCacheAtPaths?.contains(path) == true)
             .diskCacheStrategy(DiskCacheStrategy.RESOURCE)
 
     val builder = Glide.with(applicationContext)
@@ -299,7 +479,7 @@ fun Context.loadSVG(path: String, target: MySquareImageView, cropThumbnails: Boo
             .into(target)
 }
 
-fun Context.getCachedDirectories(getVideosOnly: Boolean = false, getImagesOnly: Boolean = false, directoryDao: DirectoryDao = galleryDB.DirectoryDao(), callback: (ArrayList<Directory>) -> Unit) {
+fun Context.getCachedDirectories(getVideosOnly: Boolean = false, getImagesOnly: Boolean = false, directoryDao: DirectoryDao = galleryDB.DirectoryDao(), forceShowHidden: Boolean = false, callback: (ArrayList<Directory>) -> Unit) {
     Thread {
         val directories = try {
             directoryDao.getAll() as ArrayList<Directory>
@@ -307,11 +487,11 @@ fun Context.getCachedDirectories(getVideosOnly: Boolean = false, getImagesOnly:
             ArrayList<Directory>()
         }
 
-        if (!config.showRecycleBinAtFolders) {
+        if (!config.showRecycleBinAtFolders || !config.useRecycleBin) {
             directories.removeAll { it.isRecycleBin() }
         }
 
-        val shouldShowHidden = config.shouldShowHidden
+        val shouldShowHidden = config.shouldShowHidden || forceShowHidden
         val excludedPaths = config.excludedFolders
         val includedPaths = config.includedFolders
         var filteredDirectories = directories.filter { it.path.shouldFolderBeVisible(excludedPaths, includedPaths, shouldShowHidden) } as ArrayList<Directory>
@@ -390,11 +570,10 @@ fun Context.getCachedMedia(path: String, getVideosOnly: Boolean = false, getImag
         val grouped = mediaFetcher.groupMedia(media, pathToUse)
         callback(grouped.clone() as ArrayList<ThumbnailItem>)
 
-        val recycleBinPath = filesDir.absolutePath
         val mediaToDelete = ArrayList<Medium>()
         media.filter { !getDoesFilePathExist(it.path) }.forEach {
             if (it.path.startsWith(recycleBinPath)) {
-                mediumDao.deleteMediumPath(it.path.removePrefix(recycleBinPath))
+                deleteDBPath(mediumDao, it.path)
             } else {
                 mediaToDelete.add(it)
             }
@@ -427,10 +606,83 @@ fun Context.getOTGFolderChildrenNames(path: String) = getOTGFolderChildren(path)
 
 fun Context.getFavoritePaths() = galleryDB.MediumDao().getFavoritePaths() as ArrayList<String>
 
+// remove the "recycle_bin" from the file path prefix, replace it with real bin path /data/user...
 fun Context.getUpdatedDeletedMedia(mediumDao: MediumDao): ArrayList<Medium> {
     val media = mediumDao.getDeletedMedia() as ArrayList<Medium>
     media.forEach {
-        it.path = File(filesDir.absolutePath, it.path).toString()
+        it.path = File(recycleBinPath, it.path.removePrefix(RECYCLE_BIN)).toString()
     }
     return media
 }
+
+fun Context.deleteDBPath(mediumDao: MediumDao, path: String) {
+    mediumDao.deleteMediumPath(path.replaceFirst(recycleBinPath, RECYCLE_BIN))
+}
+
+fun Context.updateWidgets() {
+    val widgetIDs = AppWidgetManager.getInstance(applicationContext).getAppWidgetIds(ComponentName(applicationContext, MyWidgetProvider::class.java))
+    if (widgetIDs.isNotEmpty()) {
+        Intent(applicationContext, MyWidgetProvider::class.java).apply {
+            action = AppWidgetManager.ACTION_APPWIDGET_UPDATE
+            putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, widgetIDs)
+            sendBroadcast(this)
+        }
+    }
+}
+
+// based on https://github.com/sannies/mp4parser/blob/master/examples/src/main/java/com/google/code/mp4parser/example/PrintStructure.java
+fun Context.parseFileChannel(path: String, fc: FileChannel, level: Int, start: Long, end: Long, callback: () -> Unit) {
+    val FILE_CHANNEL_CONTAINERS = arrayListOf("moov", "trak", "mdia", "minf", "udta", "stbl")
+    try {
+        var iteration = 0
+        var currEnd = end
+        fc.position(start)
+        if (currEnd <= 0) {
+            currEnd = start + fc.size()
+        }
+
+        while (currEnd - fc.position() > 8) {
+            // just a check to avoid deadloop at some videos
+            if (iteration++ > 50) {
+                return
+            }
+
+            val begin = fc.position()
+            val byteBuffer = ByteBuffer.allocate(8)
+            fc.read(byteBuffer)
+            byteBuffer.rewind()
+            val size = IsoTypeReader.readUInt32(byteBuffer)
+            val type = IsoTypeReader.read4cc(byteBuffer)
+            val newEnd = begin + size
+
+            if (type == "uuid") {
+                val fis = FileInputStream(File(path))
+                fis.skip(begin)
+
+                val sb = StringBuilder()
+                val buffer = ByteArray(1024)
+                while (true) {
+                    val n = fis.read(buffer)
+                    if (n != -1) {
+                        sb.append(String(buffer, 0, n))
+                    } else {
+                        break
+                    }
+                }
+
+                val xmlString = sb.toString().toLowerCase()
+                if (xmlString.contains("gspherical:projectiontype>equirectangular") || xmlString.contains("gspherical:projectiontype=\"equirectangular\"")) {
+                    callback.invoke()
+                }
+                return
+            }
+
+            if (FILE_CHANNEL_CONTAINERS.contains(type)) {
+                parseFileChannel(path, fc, level + 1, begin + 8, newEnd, callback)
+            }
+
+            fc.position(newEnd)
+        }
+    } catch (ignored: Exception) {
+    }
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/extensions/File.kt

@@ -1,6 +1,6 @@
-package com.simplemobiletools.gallery.extensions
+package com.simplemobiletools.gallery.pro.extensions
 
-import com.simplemobiletools.gallery.helpers.NOMEDIA
+import com.simplemobiletools.gallery.pro.helpers.NOMEDIA
 import java.io.File
 
 fun File.containsNoMedia() = isDirectory && File(this, NOMEDIA).exists()

app/src/main/kotlin/com/simplemobiletools/gallery/pro/extensions/FileDirItem.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.extensions
+package com.simplemobiletools.gallery.pro.extensions
 
 import android.os.Environment
 import com.simplemobiletools.commons.models.FileDirItem

app/src/main/kotlin/com/simplemobiletools/gallery/pro/extensions/Resources.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.extensions
+package com.simplemobiletools.gallery.pro.extensions
 
 import android.content.Context
 import android.content.res.Resources

app/src/main/kotlin/com/simplemobiletools/gallery/pro/extensions/String.kt

@@ -1,13 +1,16 @@
-package com.simplemobiletools.gallery.extensions
+package com.simplemobiletools.gallery.pro.extensions
 
+import android.media.MediaMetadataRetriever
 import com.bumptech.glide.signature.ObjectKey
 import com.simplemobiletools.commons.helpers.OTG_PATH
 import java.io.File
 import java.io.IOException
 
-fun String.getFileSignature(): ObjectKey {
+fun String.getFileSignature() = ObjectKey(getFileKey())
+
+fun String.getFileKey(): String {
     val file = File(this)
-    return ObjectKey("${file.absolutePath}${file.lastModified()}")
+    return "${file.absolutePath}${file.lastModified()}"
 }
 
 fun String.isThisOrParentIncluded(includedPaths: MutableSet<String>) = includedPaths.any { startsWith(it, true) }
@@ -18,8 +21,14 @@ fun String.shouldFolderBeVisible(excludedPaths: MutableSet<String>, includedPath
     val file = File(this)
     return if (isEmpty()) {
         false
+    } else if (!showHidden && file.isHidden) {
+        false
+    } else if (includedPaths.contains(this)) {
+        true
     } else if (!showHidden && file.containsNoMedia()) {
         false
+    } else if (excludedPaths.contains(this)) {
+        false
     } else if (isThisOrParentIncluded(includedPaths)) {
         true
     } else if (isThisOrParentExcluded(excludedPaths)) {
@@ -43,3 +52,14 @@ fun String.getDistinctPath(): String {
         toLowerCase()
     }
 }
+
+fun String.getVideoDuration(): Int {
+    var seconds = 0
+    try {
+        val retriever = MediaMetadataRetriever()
+        retriever.setDataSource(this)
+        seconds = Math.round(retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION).toInt() / 1000f)
+    } catch (e: Exception) {
+    }
+    return seconds
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/extensions/View.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.extensions
+package com.simplemobiletools.gallery.pro.extensions
 
 import android.os.SystemClock
 import android.view.MotionEvent

app/src/main/kotlin/com/simplemobiletools/gallery/pro/fragments/PhotoFragment.kt

@@ -0,0 +1,630 @@
+package com.simplemobiletools.gallery.pro.fragments
+
+import android.content.Intent
+import android.content.res.Configuration
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
+import android.graphics.Color
+import android.graphics.Matrix
+import android.graphics.drawable.ColorDrawable
+import android.graphics.drawable.Drawable
+import android.graphics.drawable.PictureDrawable
+import android.media.ExifInterface.*
+import android.net.Uri
+import android.os.Build
+import android.os.Bundle
+import android.os.Handler
+import android.util.DisplayMetrics
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import com.alexvasilkov.gestures.GestureController
+import com.alexvasilkov.gestures.State
+import com.bumptech.glide.Glide
+import com.bumptech.glide.load.DataSource
+import com.bumptech.glide.load.DecodeFormat
+import com.bumptech.glide.load.engine.DiskCacheStrategy
+import com.bumptech.glide.load.engine.GlideException
+import com.bumptech.glide.request.RequestListener
+import com.bumptech.glide.request.RequestOptions
+import com.bumptech.glide.request.target.Target
+import com.davemorrissey.labs.subscaleview.DecoderFactory
+import com.davemorrissey.labs.subscaleview.ImageDecoder
+import com.davemorrissey.labs.subscaleview.ImageRegionDecoder
+import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
+import com.simplemobiletools.commons.activities.BaseSimpleActivity
+import com.simplemobiletools.commons.extensions.*
+import com.simplemobiletools.commons.helpers.OTG_PATH
+import com.simplemobiletools.gallery.pro.R
+import com.simplemobiletools.gallery.pro.activities.PanoramaPhotoActivity
+import com.simplemobiletools.gallery.pro.activities.PhotoActivity
+import com.simplemobiletools.gallery.pro.extensions.*
+import com.simplemobiletools.gallery.pro.helpers.*
+import com.simplemobiletools.gallery.pro.models.Medium
+import com.simplemobiletools.gallery.pro.svg.SvgSoftwareLayerSetter
+import com.squareup.picasso.Callback
+import com.squareup.picasso.Picasso
+import it.sephiroth.android.library.exif2.ExifInterface
+import kotlinx.android.synthetic.main.pager_photo_item.view.*
+import org.apache.sanselan.common.byteSources.ByteSourceInputStream
+import org.apache.sanselan.formats.jpeg.JpegImageParser
+import pl.droidsonroids.gif.InputSource
+import java.io.File
+import java.io.FileOutputStream
+import java.util.*
+
+class PhotoFragment : ViewPagerFragment() {
+    private val DEFAULT_DOUBLE_TAP_ZOOM = 2f
+    private val ZOOMABLE_VIEW_LOAD_DELAY = 150L
+    private val SAME_ASPECT_RATIO_THRESHOLD = 0.01
+
+    // devices with good displays, but the rest of the hardware not good enough for them
+    private val WEIRD_DEVICES = arrayListOf(
+            "motorola xt1685",
+            "google nexus 5x"
+    )
+
+    var mCurrentRotationDegrees = 0
+    private var mIsFragmentVisible = false
+    private var mIsFullscreen = false
+    private var mWasInit = false
+    private var mIsPanorama = false
+    private var mIsSubsamplingVisible = false    // checking view.visibility is unreliable, use an extra variable for it
+    private var mImageOrientation = -1
+    private var mLoadZoomableViewHandler = Handler()
+    private var mScreenWidth = 0
+    private var mScreenHeight = 0
+    private var mCurrentGestureViewZoom = 1f
+
+    private var mStoredShowExtendedDetails = false
+    private var mStoredHideExtendedDetails = false
+    private var mStoredAllowDeepZoomableImages = false
+    private var mStoredShowHighestQuality = false
+    private var mStoredExtendedDetails = 0
+
+    private lateinit var mView: ViewGroup
+    private lateinit var mMedium: Medium
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
+        mView = (inflater.inflate(R.layout.pager_photo_item, container, false) as ViewGroup).apply {
+            subsampling_view.setOnClickListener { photoClicked() }
+            gestures_view.setOnClickListener { photoClicked() }
+            gif_view.setOnClickListener { photoClicked() }
+            instant_prev_item.setOnClickListener { listener?.goToPrevItem() }
+            instant_next_item.setOnClickListener { listener?.goToNextItem() }
+            panorama_outline.setOnClickListener { openPanorama() }
+
+            instant_prev_item.parentView = container
+            instant_next_item.parentView = container
+
+            photo_brightness_controller.initialize(activity!!, slide_info, true, container) { x, y ->
+                mView.apply {
+                    if (subsampling_view.isVisible()) {
+                        subsampling_view.sendFakeClick(x, y)
+                    } else {
+                        gestures_view.sendFakeClick(x, y)
+                    }
+                }
+            }
+
+            if (context.config.allowDownGesture) {
+                gif_view.setOnTouchListener { v, event ->
+                    if (gif_view_frame.controller.state.zoom == 1f) {
+                        handleEvent(event)
+                    }
+                    false
+                }
+
+                gestures_view.controller.addOnStateChangeListener(object : GestureController.OnStateChangeListener {
+                    override fun onStateChanged(state: State) {
+                        mCurrentGestureViewZoom = state.zoom
+                    }
+                })
+
+                gestures_view.setOnTouchListener { v, event ->
+                    if (mCurrentGestureViewZoom == 1f) {
+                        handleEvent(event)
+                    }
+                    false
+                }
+
+                subsampling_view.setOnTouchListener { v, event ->
+                    if (subsampling_view.isZoomedOut()) {
+                        handleEvent(event)
+                    }
+                    false
+                }
+            }
+        }
+
+        checkScreenDimensions()
+        storeStateVariables()
+        if (!mIsFragmentVisible && activity is PhotoActivity) {
+            mIsFragmentVisible = true
+        }
+
+        mMedium = arguments!!.getSerializable(MEDIUM) as Medium
+        if (mMedium.path.startsWith("content://") && !mMedium.path.startsWith("content://mms/")) {
+            val originalPath = mMedium.path
+            mMedium.path = context!!.getRealPathFromURI(Uri.parse(originalPath)) ?: mMedium.path
+
+            if (mMedium.path.isEmpty()) {
+                var out: FileOutputStream? = null
+                try {
+                    var inputStream = context!!.contentResolver.openInputStream(Uri.parse(originalPath))
+                    val exif = ExifInterface()
+                    exif.readExif(inputStream, ExifInterface.Options.OPTION_ALL)
+                    val tag = exif.getTag(ExifInterface.TAG_ORIENTATION)
+                    val orientation = tag?.getValueAsInt(-1) ?: -1
+                    inputStream = context!!.contentResolver.openInputStream(Uri.parse(originalPath))
+                    val original = BitmapFactory.decodeStream(inputStream)
+                    val rotated = rotateViaMatrix(original, orientation)
+                    exif.setTagValue(ExifInterface.TAG_ORIENTATION, 1)
+                    exif.removeCompressedThumbnail()
+
+                    val file = File(context!!.externalCacheDir, Uri.parse(originalPath).lastPathSegment)
+                    out = FileOutputStream(file)
+                    rotated.compress(Bitmap.CompressFormat.JPEG, 100, out)
+                    mMedium.path = file.absolutePath
+                } catch (e: Exception) {
+                    activity!!.toast(R.string.unknown_error_occurred)
+                    return mView
+                } finally {
+                    out?.close()
+                }
+            }
+        }
+
+        mIsFullscreen = activity!!.window.decorView.systemUiVisibility and View.SYSTEM_UI_FLAG_FULLSCREEN == View.SYSTEM_UI_FLAG_FULLSCREEN
+        loadImage()
+        initExtendedDetails()
+        mWasInit = true
+        checkIfPanorama()
+        updateInstantSwitchWidths()
+
+        return mView
+    }
+
+    override fun onPause() {
+        super.onPause()
+        storeStateVariables()
+    }
+
+    override fun onResume() {
+        super.onResume()
+        val config = context!!.config
+        if (mWasInit && (config.showExtendedDetails != mStoredShowExtendedDetails || config.extendedDetails != mStoredExtendedDetails)) {
+            initExtendedDetails()
+        }
+
+        if (mWasInit) {
+            if (config.allowZoomingImages != mStoredAllowDeepZoomableImages || config.showHighestQuality != mStoredShowHighestQuality) {
+                mIsSubsamplingVisible = false
+                mView.subsampling_view.beGone()
+                loadImage()
+            } else if (mMedium.isGIF()) {
+                loadGif()
+            }
+        }
+
+        val allowPhotoGestures = config.allowPhotoGestures
+        val allowInstantChange = config.allowInstantChange
+
+        mView.apply {
+            photo_brightness_controller.beVisibleIf(allowPhotoGestures)
+            instant_prev_item.beVisibleIf(allowInstantChange)
+            instant_next_item.beVisibleIf(allowInstantChange)
+        }
+
+        storeStateVariables()
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        if (activity?.isDestroyed == false) {
+            mView.subsampling_view.recycle()
+        }
+
+        mLoadZoomableViewHandler.removeCallbacksAndMessages(null)
+        if (mCurrentRotationDegrees != 0) {
+            Thread {
+                val path = mMedium.path
+                (activity as? BaseSimpleActivity)?.saveRotatedImageToFile(path, path, mCurrentRotationDegrees, false) {}
+            }.start()
+        }
+    }
+
+    override fun onConfigurationChanged(newConfig: Configuration) {
+        super.onConfigurationChanged(newConfig)
+
+        // avoid GIFs being skewed, played in wrong aspect ratio
+        if (mMedium.isGIF()) {
+            mView.onGlobalLayout {
+                measureScreen()
+                Handler().postDelayed({
+                    mView.gif_view_frame.controller.resetState()
+                    loadGif()
+                }, 50)
+            }
+        } else {
+            hideZoomableView()
+            loadImage()
+        }
+
+        initExtendedDetails()
+        updateInstantSwitchWidths()
+    }
+
+    override fun setMenuVisibility(menuVisible: Boolean) {
+        super.setMenuVisibility(menuVisible)
+        mIsFragmentVisible = menuVisible
+        if (mWasInit) {
+            if (!mMedium.isGIF()) {
+                photoFragmentVisibilityChanged(menuVisible)
+            }
+        }
+    }
+
+    private fun storeStateVariables() {
+        context!!.config.apply {
+            mStoredShowExtendedDetails = showExtendedDetails
+            mStoredHideExtendedDetails = hideExtendedDetails
+            mStoredAllowDeepZoomableImages = allowZoomingImages
+            mStoredShowHighestQuality = showHighestQuality
+            mStoredExtendedDetails = extendedDetails
+        }
+    }
+
+    private fun checkScreenDimensions() {
+        if (mScreenWidth == 0 || mScreenHeight == 0) {
+            measureScreen()
+        }
+    }
+
+    private fun measureScreen() {
+        val metrics = DisplayMetrics()
+        activity!!.windowManager.defaultDisplay.getRealMetrics(metrics)
+        mScreenWidth = metrics.widthPixels
+        mScreenHeight = metrics.heightPixels
+    }
+
+    private fun photoFragmentVisibilityChanged(isVisible: Boolean) {
+        if (isVisible) {
+            scheduleZoomableView()
+        } else {
+            hideZoomableView()
+        }
+    }
+
+    private fun degreesForRotation(orientation: Int) = when (orientation) {
+        ORIENTATION_ROTATE_270 -> 270
+        ORIENTATION_ROTATE_180 -> 180
+        ORIENTATION_ROTATE_90 -> 90
+        else -> 0
+    }
+
+    private fun rotateViaMatrix(original: Bitmap, orientation: Int): Bitmap {
+        val degrees = degreesForRotation(orientation).toFloat()
+        return if (degrees == 0f) {
+            original
+        } else {
+            val matrix = Matrix()
+            matrix.setRotate(degrees)
+            Bitmap.createBitmap(original, 0, 0, original.width, original.height, matrix, true)
+        }
+    }
+
+    private fun loadImage() {
+        checkScreenDimensions()
+        mImageOrientation = getImageOrientation()
+        when {
+            mMedium.isGIF() -> loadGif()
+            mMedium.isSVG() -> loadSVG()
+            else -> loadBitmap()
+        }
+    }
+
+    private fun loadGif() {
+        try {
+            val pathToLoad = getPathToLoad(mMedium)
+            val source = if (pathToLoad.startsWith("content://") || pathToLoad.startsWith("file://")) {
+                InputSource.UriSource(context!!.contentResolver, Uri.parse(pathToLoad))
+            } else {
+                InputSource.FileSource(pathToLoad)
+            }
+
+            mView.apply {
+                gestures_view.beGone()
+                gif_view.setInputSource(source)
+                gif_view_frame.beVisible()
+            }
+        } catch (e: Exception) {
+            loadBitmap()
+        } catch (e: OutOfMemoryError) {
+            loadBitmap()
+        }
+    }
+
+    private fun loadSVG() {
+        Glide.with(context!!)
+                .`as`(PictureDrawable::class.java)
+                .listener(SvgSoftwareLayerSetter())
+                .load(mMedium.path)
+                .into(mView.gestures_view)
+    }
+
+    private fun loadBitmap(addZoomableView: Boolean = true) {
+        val options = RequestOptions()
+                .signature(mMedium.path.getFileSignature())
+                .format(DecodeFormat.PREFER_ARGB_8888)
+                .diskCacheStrategy(DiskCacheStrategy.RESOURCE)
+                .fitCenter()
+
+        if (mCurrentRotationDegrees != 0) {
+            options.transform(GlideRotateTransformation(mCurrentRotationDegrees))
+            options.diskCacheStrategy(DiskCacheStrategy.NONE)
+        }
+
+        Glide.with(context!!)
+                .load(getPathToLoad(mMedium))
+                .apply(options)
+                .listener(object : RequestListener<Drawable> {
+                    override fun onLoadFailed(e: GlideException?, model: Any?, target: Target<Drawable>?, isFirstResource: Boolean): Boolean {
+                        if (activity != null) {
+                            tryLoadingWithPicasso(addZoomableView)
+                        }
+                        return false
+                    }
+
+                    override fun onResourceReady(resource: Drawable?, model: Any?, target: Target<Drawable>?, dataSource: DataSource?, isFirstResource: Boolean): Boolean {
+                        if (mIsFragmentVisible && addZoomableView) {
+                            scheduleZoomableView()
+                        }
+                        return false
+                    }
+                }).into(mView.gestures_view)
+    }
+
+    private fun tryLoadingWithPicasso(addZoomableView: Boolean) {
+        var pathToLoad = if (mMedium.path.startsWith("content://")) mMedium.path else "file://${mMedium.path}"
+        pathToLoad = pathToLoad.replace("%", "%25").replace("#", "%23")
+
+        try {
+            val picasso = Picasso.get()
+                    .load(pathToLoad)
+                    .centerInside()
+                    .stableKey(mMedium.path.getFileKey())
+                    .resize(mScreenWidth, mScreenHeight)
+
+            if (mCurrentRotationDegrees != 0) {
+                picasso.rotate(mCurrentRotationDegrees.toFloat())
+            } else {
+                degreesForRotation(mImageOrientation).toFloat()
+            }
+
+            picasso.into(mView.gestures_view, object : Callback {
+                override fun onSuccess() {
+                    mView.gestures_view.controller.settings.isZoomEnabled = mCurrentRotationDegrees != 0 || context?.config?.allowZoomingImages == false
+                    if (mIsFragmentVisible && addZoomableView) {
+                        scheduleZoomableView()
+                    }
+                }
+
+                override fun onError(e: Exception) {}
+            })
+        } catch (ignored: Exception) {
+        }
+    }
+
+    private fun openPanorama() {
+        Intent(context, PanoramaPhotoActivity::class.java).apply {
+            putExtra(PATH, mMedium.path)
+            startActivity(this)
+        }
+    }
+
+    private fun scheduleZoomableView() {
+        mLoadZoomableViewHandler.removeCallbacksAndMessages(null)
+        mLoadZoomableViewHandler.postDelayed({
+            if (mIsFragmentVisible && context?.config?.allowZoomingImages == true && mMedium.isImage() && !mIsSubsamplingVisible) {
+                addZoomableView()
+            }
+        }, ZOOMABLE_VIEW_LOAD_DELAY)
+    }
+
+    private fun addZoomableView() {
+        val rotation = degreesForRotation(mImageOrientation)
+        val path = getPathToLoad(mMedium)
+        mIsSubsamplingVisible = true
+
+        val bitmapDecoder = object : DecoderFactory<ImageDecoder> {
+            override fun make() = PicassoDecoder(path, Picasso.get(), rotation)
+        }
+
+        val regionDecoder = object : DecoderFactory<ImageRegionDecoder> {
+            override fun make() = PicassoRegionDecoder()
+        }
+
+        var newOrientation = (rotation + mCurrentRotationDegrees) % 360
+        if (newOrientation < 0) {
+            newOrientation += 360
+        }
+
+        val config = context!!.config
+        mView.subsampling_view.apply {
+            setMaxTileSize(if (config.showHighestQuality) Integer.MAX_VALUE else 4096)
+            setMinimumTileDpi(if (config.showHighestQuality) -1 else getMinTileDpi())
+            background = ColorDrawable(Color.TRANSPARENT)
+            bitmapDecoderFactory = bitmapDecoder
+            regionDecoderFactory = regionDecoder
+            maxScale = 10f
+            beVisible()
+            isOneToOneZoomEnabled = config.allowOneToOneZoom
+            orientation = newOrientation
+            setImage(path)
+            onImageEventListener = object : SubsamplingScaleImageView.OnImageEventListener {
+                override fun onReady() {
+                    background = ColorDrawable(if (config.blackBackground) Color.BLACK else config.backgroundColor)
+                    val useWidth = if (mImageOrientation == ORIENTATION_ROTATE_90 || mImageOrientation == ORIENTATION_ROTATE_270) sHeight else sWidth
+                    val useHeight = if (mImageOrientation == ORIENTATION_ROTATE_90 || mImageOrientation == ORIENTATION_ROTATE_270) sWidth else sHeight
+                    doubleTapZoomScale = getDoubleTapZoomScale(useWidth, useHeight)
+                }
+
+                override fun onImageLoadError(e: Exception) {
+                    mView.gestures_view.controller.settings.isZoomEnabled = true
+                    background = ColorDrawable(Color.TRANSPARENT)
+                    mIsSubsamplingVisible = false
+                    beGone()
+                }
+
+                override fun onImageRotation(degrees: Int) {
+                    val fullRotation = (rotation + degrees) % 360
+                    val useWidth = if (fullRotation == 90 || fullRotation == 270) sHeight else sWidth
+                    val useHeight = if (fullRotation == 90 || fullRotation == 270) sWidth else sHeight
+                    doubleTapZoomScale = getDoubleTapZoomScale(useWidth, useHeight)
+                    mCurrentRotationDegrees = (mCurrentRotationDegrees + degrees) % 360
+                    loadBitmap(false)
+                    activity?.invalidateOptionsMenu()
+                }
+            }
+        }
+    }
+
+    private fun getMinTileDpi(): Int {
+        val metrics = resources.displayMetrics
+        val averageDpi = (metrics.xdpi + metrics.ydpi) / 2
+        val device = "${Build.BRAND} ${Build.MODEL}".toLowerCase()
+        return when {
+            WEIRD_DEVICES.contains(device) -> 240
+            averageDpi > 400 -> 280
+            averageDpi > 300 -> 220
+            else -> 160
+        }
+    }
+
+    private fun checkIfPanorama() {
+        mIsPanorama = try {
+            val inputStream = if (mMedium.path.startsWith("content:/")) context!!.contentResolver.openInputStream(Uri.parse(mMedium.path)) else File(mMedium.path).inputStream()
+            val imageParser = JpegImageParser().getXmpXml(ByteSourceInputStream(inputStream, mMedium.name), HashMap<String, Any>())
+            imageParser.contains("GPano:UsePanoramaViewer=\"True\"", true) || imageParser.contains("<GPano:UsePanoramaViewer>True</GPano:UsePanoramaViewer>", true)
+        } catch (e: Exception) {
+            false
+        } catch (e: OutOfMemoryError) {
+            false
+        }
+
+        mView.panorama_outline.beVisibleIf(mIsPanorama)
+    }
+
+    private fun getImageOrientation(): Int {
+        val defaultOrientation = -1
+        var orient = defaultOrientation
+
+        try {
+            val pathToLoad = getPathToLoad(mMedium)
+            val exif = android.media.ExifInterface(pathToLoad)
+            orient = exif.getAttributeInt(android.media.ExifInterface.TAG_ORIENTATION, defaultOrientation)
+
+            if (orient == defaultOrientation || mMedium.path.startsWith(OTG_PATH)) {
+                val uri = if (pathToLoad.startsWith("content:/")) Uri.parse(pathToLoad) else Uri.fromFile(File(pathToLoad))
+                val inputStream = context!!.contentResolver.openInputStream(uri)
+                val exif2 = ExifInterface()
+                exif2.readExif(inputStream, ExifInterface.Options.OPTION_ALL)
+                orient = exif2.getTag(ExifInterface.TAG_ORIENTATION)?.getValueAsInt(defaultOrientation) ?: defaultOrientation
+            }
+        } catch (ignored: Exception) {
+        } catch (ignored: OutOfMemoryError) {
+        }
+        return orient
+    }
+
+    private fun getDoubleTapZoomScale(width: Int, height: Int): Float {
+        val bitmapAspectRatio = height / width.toFloat()
+        val screenAspectRatio = mScreenHeight / mScreenWidth.toFloat()
+
+        return if (context == null || Math.abs(bitmapAspectRatio - screenAspectRatio) < SAME_ASPECT_RATIO_THRESHOLD) {
+            DEFAULT_DOUBLE_TAP_ZOOM
+        } else if (context!!.portrait && bitmapAspectRatio <= screenAspectRatio) {
+            mScreenHeight / height.toFloat()
+        } else if (context!!.portrait && bitmapAspectRatio > screenAspectRatio) {
+            mScreenWidth / width.toFloat()
+        } else if (!context!!.portrait && bitmapAspectRatio >= screenAspectRatio) {
+            mScreenWidth / width.toFloat()
+        } else if (!context!!.portrait && bitmapAspectRatio < screenAspectRatio) {
+            mScreenHeight / height.toFloat()
+        } else {
+            DEFAULT_DOUBLE_TAP_ZOOM
+        }
+    }
+
+    fun rotateImageViewBy(degrees: Int) {
+        if (mIsSubsamplingVisible) {
+            mView.subsampling_view.rotateBy(degrees)
+        } else {
+            mCurrentRotationDegrees = (mCurrentRotationDegrees + degrees) % 360
+            mLoadZoomableViewHandler.removeCallbacksAndMessages(null)
+            mIsSubsamplingVisible = false
+            loadBitmap()
+        }
+    }
+
+    private fun initExtendedDetails() {
+        if (context!!.config.showExtendedDetails) {
+            mView.photo_details.apply {
+                beInvisible()   // make it invisible so we can measure it, but not show yet
+                text = getMediumExtendedDetails(mMedium)
+                onGlobalLayout {
+                    if (isAdded) {
+                        val realY = getExtendedDetailsY(height)
+                        if (realY > 0) {
+                            y = realY
+                            beVisibleIf(text.isNotEmpty())
+                            alpha = if (!context!!.config.hideExtendedDetails || !mIsFullscreen) 1f else 0f
+                        }
+                    }
+                }
+            }
+        } else {
+            mView.photo_details.beGone()
+        }
+    }
+
+    private fun hideZoomableView() {
+        if (context?.config?.allowZoomingImages == true) {
+            mIsSubsamplingVisible = false
+            mView.subsampling_view.recycle()
+            mView.subsampling_view.beGone()
+            mLoadZoomableViewHandler.removeCallbacksAndMessages(null)
+        }
+    }
+
+    private fun photoClicked() {
+        listener?.fragmentClicked()
+    }
+
+    private fun updateInstantSwitchWidths() {
+        val newWidth = resources.getDimension(R.dimen.instant_change_bar_width) + if (activity?.portrait == false) activity!!.navigationBarWidth else 0
+        mView.instant_prev_item.layoutParams.width = newWidth.toInt()
+        mView.instant_next_item.layoutParams.width = newWidth.toInt()
+    }
+
+    override fun fullscreenToggled(isFullscreen: Boolean) {
+        this.mIsFullscreen = isFullscreen
+        mView.photo_details.apply {
+            if (mStoredShowExtendedDetails && isVisible()) {
+                animate().y(getExtendedDetailsY(height))
+
+                if (mStoredHideExtendedDetails) {
+                    animate().alpha(if (isFullscreen) 0f else 1f).start()
+                }
+            }
+        }
+    }
+
+    private fun getExtendedDetailsY(height: Int): Float {
+        val smallMargin = resources.getDimension(R.dimen.small_margin)
+        val fullscreenOffset = smallMargin + if (mIsFullscreen) 0 else context!!.navigationBarHeight
+        val actionsHeight = if (context!!.config.bottomActions && !mIsFullscreen) resources.getDimension(R.dimen.bottom_actions_height) else 0f
+        return context!!.realScreenSize.y - height - actionsHeight - fullscreenOffset
+    }
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/fragments/VideoFragment.kt

@@ -1,18 +1,16 @@
-package com.simplemobiletools.gallery.fragments
+package com.simplemobiletools.gallery.pro.fragments
 
-import android.annotation.TargetApi
+import android.content.Intent
 import android.content.res.Configuration
 import android.graphics.Point
 import android.graphics.SurfaceTexture
-import android.media.AudioManager
-import android.media.MediaMetadataRetriever
 import android.net.Uri
-import android.os.Build
 import android.os.Bundle
 import android.os.Handler
 import android.util.DisplayMetrics
 import android.view.*
-import android.view.animation.AnimationUtils
+import android.widget.ImageView
+import android.widget.RelativeLayout
 import android.widget.SeekBar
 import android.widget.TextView
 import com.bumptech.glide.Glide
@@ -20,68 +18,115 @@ import com.google.android.exoplayer2.*
 import com.google.android.exoplayer2.extractor.DefaultExtractorsFactory
 import com.google.android.exoplayer2.source.ExtractorMediaSource
 import com.google.android.exoplayer2.source.TrackGroupArray
-import com.google.android.exoplayer2.trackselection.DefaultTrackSelector
 import com.google.android.exoplayer2.trackselection.TrackSelectionArray
 import com.google.android.exoplayer2.upstream.ContentDataSource
 import com.google.android.exoplayer2.upstream.DataSource
 import com.google.android.exoplayer2.upstream.DataSpec
 import com.google.android.exoplayer2.upstream.FileDataSource
-import com.google.android.exoplayer2.video.VideoListener
 import com.simplemobiletools.commons.extensions.*
-import com.simplemobiletools.commons.helpers.isJellyBean1Plus
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.activities.PanoramaVideoActivity
-import com.simplemobiletools.gallery.activities.VideoActivity
+import com.simplemobiletools.gallery.pro.activities.VideoActivity
-import com.simplemobiletools.gallery.extensions.*
+import com.simplemobiletools.gallery.pro.extensions.*
-import com.simplemobiletools.gallery.helpers.MEDIUM
+import com.simplemobiletools.gallery.pro.helpers.Config
-import com.simplemobiletools.gallery.helpers.MediaSideScroll
+import com.simplemobiletools.gallery.pro.helpers.MEDIUM
-import com.simplemobiletools.gallery.models.Medium
+import com.simplemobiletools.gallery.pro.helpers.MIN_SKIP_LENGTH
+import com.simplemobiletools.gallery.pro.helpers.PATH
+import com.simplemobiletools.gallery.pro.models.Medium
+import com.simplemobiletools.gallery.pro.views.MediaSideScroll
+import kotlinx.android.synthetic.main.bottom_video_time_holder.view.*
 import kotlinx.android.synthetic.main.pager_video_item.view.*
 import java.io.File
+import java.io.FileInputStream
 
 class VideoFragment : ViewPagerFragment(), TextureView.SurfaceTextureListener, SeekBar.OnSeekBarChangeListener {
     private val PROGRESS = "progress"
-    private val MIN_SKIP_LENGTH = 2000
-    private val HIDE_PAUSE_DELAY = 2000L
-    private val PLAY_PAUSE_VISIBLE_ALPHA = 0.8f
 
-    private var mTextureView: TextureView? = null
+    private var mIsFullscreen = false
-    private var mCurrTimeView: TextView? = null
+    private var mWasFragmentInit = false
-    private var mSeekBar: SeekBar? = null
+    private var mIsPanorama = false
-    private var mTimeHolder: View? = null
+    private var mIsFragmentVisible = false
-    private var mView: View? = null
+    private var mIsPlaying = false
+    private var mIsDragged = false
+    private var mWasVideoStarted = false
+    private var mCurrTime = 0
+    private var mDuration = 0
+
     private var mExoPlayer: SimpleExoPlayer? = null
     private var mVideoSize = Point(0, 0)
     private var mTimerHandler = Handler()
-    private var mHidePauseHandler = Handler()
-
-    private var mIsPlaying = false
-    private var mIsDragged = false
-    private var mIsFullscreen = false
-    private var mIsFragmentVisible = false
-    private var mWasFragmentInit = false
-    private var mIsExoPlayerInitialized = false
-    private var mCurrTime = 0
-    private var mDuration = 0
 
     private var mStoredShowExtendedDetails = false
     private var mStoredHideExtendedDetails = false
     private var mStoredBottomActions = true
     private var mStoredExtendedDetails = 0
+    private var mStoredRememberLastVideoPosition = false
+    private var mStoredLastVideoPath = ""
+    private var mStoredLastVideoPosition = 0
 
-    private lateinit var brightnessSideScroll: MediaSideScroll
+    private lateinit var mTimeHolder: View
-    private lateinit var volumeSideScroll: MediaSideScroll
+    private lateinit var mBrightnessSideScroll: MediaSideScroll
-
+    private lateinit var mVolumeSideScroll: MediaSideScroll
-    lateinit var medium: Medium
+    private lateinit var mView: View
+    private lateinit var mMedium: Medium
+    private lateinit var mConfig: Config
+    private lateinit var mTextureView: TextureView
+    private lateinit var mCurrTimeView: TextView
+    private lateinit var mPlayPauseButton: ImageView
+    private lateinit var mSeekBar: SeekBar
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+        mConfig = context!!.config
         mView = inflater.inflate(R.layout.pager_video_item, container, false).apply {
             instant_prev_item.setOnClickListener { listener?.goToPrevItem() }
             instant_next_item.setOnClickListener { listener?.goToNextItem() }
+            video_curr_time.setOnClickListener { skip(false) }
+            video_duration.setOnClickListener { skip(true) }
+            video_holder.setOnClickListener { toggleFullscreen() }
+            video_preview.setOnClickListener { toggleFullscreen() }
+            panorama_outline.setOnClickListener { openPanorama() }
+            video_play_outline.setOnClickListener {
+                if (mConfig.openVideosOnSeparateScreen) {
+                    launchVideoPlayer()
+                } else {
+                    togglePlayPause()
+                }
+            }
+
+            mPlayPauseButton = video_toggle_play_pause
+            mPlayPauseButton.setOnClickListener {
+                togglePlayPause()
+            }
+
+            mSeekBar = video_seekbar
+            mSeekBar.setOnSeekBarChangeListener(this@VideoFragment)
+            // adding an empty click listener just to avoid ripple animation at toggling fullscreen
+            mSeekBar.setOnClickListener { }
+
             mTimeHolder = video_time_holder
+            mCurrTimeView = video_curr_time
+            mBrightnessSideScroll = video_brightness_controller
+            mVolumeSideScroll = video_volume_controller
+            mTextureView = video_surface
+
+            if (mConfig.allowDownGesture) {
+                video_preview.setOnTouchListener { view, event ->
+                    handleEvent(event)
+                    false
+                }
+
+                video_surface_frame.setOnTouchListener { view, event ->
+                    if (video_surface_frame.controller.state.zoom == 1f) {
+                        handleEvent(event)
+                    }
+                    false
+                }
+            }
         }
 
         storeStateVariables()
-        medium = arguments!!.getSerializable(MEDIUM) as Medium
+        mMedium = arguments!!.getSerializable(MEDIUM) as Medium
+        Glide.with(context!!).load(mMedium.path).into(mView.video_preview)
 
         // setMenuVisibility is not called at VideoActivity (third party intent)
         if (!mIsFragmentVisible && activity is VideoActivity) {
@@ -89,81 +134,91 @@ class VideoFragment : ViewPagerFragment(), TextureView.SurfaceTextureListener, S
         }
 
         mIsFullscreen = activity!!.window.decorView.systemUiVisibility and View.SYSTEM_UI_FLAG_FULLSCREEN == View.SYSTEM_UI_FLAG_FULLSCREEN
+        initTimeHolder()
+        checkIfPanorama()
 
+        mMedium.path.getVideoResolution()?.apply {
+            mVideoSize.x = x
+            mVideoSize.y = y
+        }
+
+        if (mIsPanorama) {
+            mView.apply {
+                panorama_outline.beVisible()
+                video_play_outline.beGone()
+                mVolumeSideScroll.beGone()
+                mBrightnessSideScroll.beGone()
+                Glide.with(context!!).load(mMedium.path).into(video_preview)
+            }
+        }
+
+        if (!mIsPanorama) {
             setupPlayer()
             if (savedInstanceState != null) {
                 mCurrTime = savedInstanceState.getInt(PROGRESS)
             }
 
-        checkFullscreen()
             mWasFragmentInit = true
 
-        mView!!.apply {
+            if (mVideoSize.x != 0 && mVideoSize.y != 0) {
-            brightnessSideScroll = video_brightness_controller
-            brightnessSideScroll.initialize(activity!!, slide_info, true, container) { x, y ->
-                video_holder.performClick()
-            }
-
-            volumeSideScroll = video_volume_controller
-            volumeSideScroll.initialize(activity!!, slide_info, false, container) { x, y ->
-                video_holder.performClick()
-            }
-
-            video_curr_time.setOnClickListener { skip(false) }
-            video_duration.setOnClickListener { skip(true) }
-            Glide.with(context!!).load(medium.path).into(video_preview)
-        }
-
-        mExoPlayer = ExoPlayerFactory.newSimpleInstance(context, DefaultTrackSelector())
-        initExoPlayerListeners()
-
-        medium.path.getVideoResolution()?.apply {
-            mVideoSize.x = x
-            mVideoSize.y = y
                 setVideoSize()
             }
 
-        setupVideoDuration()
+            mView.apply {
+                mBrightnessSideScroll.initialize(activity!!, slide_info, true, container) { x, y ->
+                    video_holder.performClick()
+                }
 
-        mView!!.video_surface.onGlobalLayout {
+                mVolumeSideScroll.initialize(activity!!, slide_info, false, container) { x, y ->
-            if (mIsFragmentVisible && context?.config?.autoplayVideos == true) {
+                    video_holder.performClick()
+                }
+
+                video_surface.onGlobalLayout {
+                    if (mIsFragmentVisible && mConfig.autoplayVideos && !mConfig.openVideosOnSeparateScreen) {
                         playVideo()
                     }
                 }
+            }
+        }
 
+        setupVideoDuration()
+        if (mStoredRememberLastVideoPosition) {
+            setLastVideoSavedPosition()
+        }
+
+        updateInstantSwitchWidths()
         return mView
     }
 
     override fun onResume() {
         super.onResume()
-        activity!!.updateTextColors(mView!!.video_holder)
+        mConfig = context!!.config      // make sure we get a new config, in case the user changed something in the app settings
-        val config = context!!.config
+        activity!!.updateTextColors(mView.video_holder)
-        val allowVideoGestures = config.allowVideoGestures
+        val allowVideoGestures = mConfig.allowVideoGestures
-        val allowInstantChange = config.allowInstantChange
+        val allowInstantChange = mConfig.allowInstantChange
-        mView!!.apply {
+        mTextureView.beGoneIf(mConfig.openVideosOnSeparateScreen || mIsPanorama)
-            video_volume_controller.beVisibleIf(allowVideoGestures)
+        mView.apply {
-            video_brightness_controller.beVisibleIf(allowVideoGestures)
+            video_surface_frame.beGoneIf(mTextureView.isGone())
+
+            video_volume_controller.beVisibleIf(allowVideoGestures && !mIsPanorama)
+            video_brightness_controller.beVisibleIf(allowVideoGestures && !mIsPanorama)
 
             instant_prev_item.beVisibleIf(allowInstantChange)
             instant_next_item.beVisibleIf(allowInstantChange)
         }
 
-        if (config.showExtendedDetails != mStoredShowExtendedDetails || config.extendedDetails != mStoredExtendedDetails) {
         checkExtendedDetails()
-        }
-
-        if (config.bottomActions != mStoredBottomActions) {
         initTimeHolder()
-        }
-
-        mView!!.video_time_holder.setBackgroundResource(if (config.bottomActions) 0 else R.drawable.gradient_background)
         storeStateVariables()
     }
 
     override fun onPause() {
         super.onPause()
-        pauseVideo()
         storeStateVariables()
+        pauseVideo()
+        if (mStoredRememberLastVideoPosition && mIsFragmentVisible && mWasVideoStarted) {
+            saveVideoProgress()
+        }
     }
 
     override fun onDestroy() {
@@ -180,7 +235,7 @@ class VideoFragment : ViewPagerFragment(), TextureView.SurfaceTextureListener, S
         }
 
         mIsFragmentVisible = menuVisible
-        if (mWasFragmentInit && menuVisible && context?.config?.autoplayVideos == true) {
+        if (mWasFragmentInit && menuVisible && mConfig.autoplayVideos && !mConfig.openVideosOnSeparateScreen) {
             playVideo()
         }
     }
@@ -190,35 +245,85 @@ class VideoFragment : ViewPagerFragment(), TextureView.SurfaceTextureListener, S
         setVideoSize()
         initTimeHolder()
         checkExtendedDetails()
+        updateInstantSwitchWidths()
+        mView.video_surface_frame.onGlobalLayout {
+            mView.video_surface_frame.controller.resetState()
+        }
+    }
+
+    override fun onSaveInstanceState(outState: Bundle) {
+        super.onSaveInstanceState(outState)
+        outState.putInt(PROGRESS, mCurrTime)
     }
 
     private fun storeStateVariables() {
-        context!!.config.apply {
+        mConfig.apply {
             mStoredShowExtendedDetails = showExtendedDetails
             mStoredHideExtendedDetails = hideExtendedDetails
             mStoredExtendedDetails = extendedDetails
             mStoredBottomActions = bottomActions
+            mStoredRememberLastVideoPosition = rememberLastVideoPosition
+            mStoredLastVideoPath = lastVideoPath
+            mStoredLastVideoPosition = lastVideoPosition
         }
     }
 
     private fun setupPlayer() {
-        if (activity == null)
+        if (activity == null || mConfig.openVideosOnSeparateScreen || mIsPanorama) {
             return
+        }
 
-        mView!!.video_play_outline.setOnClickListener { togglePlayPause() }
+        mView.video_surface_frame.setOnClickListener { toggleFullscreen() }
+        mTextureView.surfaceTextureListener = this
 
-        mTextureView = mView!!.video_surface
-        mTextureView!!.setOnClickListener { toggleFullscreen() }
-        mTextureView!!.surfaceTextureListener = this
-        mView!!.video_holder.setOnClickListener { toggleFullscreen() }
-
-        initTimeHolder()
         checkExtendedDetails()
+
+        mExoPlayer = ExoPlayerFactory.newSimpleInstance(context)
+        mExoPlayer!!.seekParameters = SeekParameters.CLOSEST_SYNC
+        initExoPlayerListeners()
+    }
+
+    private fun saveVideoProgress() {
+        if (!videoEnded()) {
+            mStoredLastVideoPosition = mExoPlayer!!.currentPosition.toInt() / 1000
+            mStoredLastVideoPath = mMedium.path
+        }
+
+        mConfig.apply {
+            lastVideoPosition = mStoredLastVideoPosition
+            lastVideoPath = mStoredLastVideoPath
+        }
+    }
+
+    private fun setLastVideoSavedPosition() {
+        if (mStoredLastVideoPath == mMedium.path && mStoredLastVideoPosition > 0) {
+            setPosition(mStoredLastVideoPosition)
+        }
+    }
+
+    private fun setupTimeHolder() {
+        mSeekBar.max = mDuration
+        mView.video_duration.text = mDuration.getFormattedDuration()
+        setupTimer()
+    }
+
+    private fun setupTimer() {
+        activity!!.runOnUiThread(object : Runnable {
+            override fun run() {
+                if (mExoPlayer != null && !mIsDragged && mIsPlaying) {
+                    mCurrTime = (mExoPlayer!!.currentPosition / 1000).toInt()
+                    mSeekBar.progress = mCurrTime
+                    mCurrTimeView.text = mCurrTime.getFormattedDuration()
+                }
+
+                mTimerHandler.postDelayed(this, 1000)
+            }
+        })
     }
 
     private fun initExoPlayer() {
-        val isContentUri = medium.path.startsWith("content://")
+        val isContentUri = mMedium.path.startsWith("content://")
-        val uri = if (isContentUri) Uri.parse(medium.path) else Uri.fromFile(File(medium.path))
+        val uri = if (isContentUri) Uri.parse(mMedium.path) else Uri.fromFile(File(mMedium.path))
         val dataSpec = DataSpec(uri)
         val fileDataSource = if (isContentUri) ContentDataSource(context) else FileDataSource()
         try {
@@ -229,7 +334,7 @@ class VideoFragment : ViewPagerFragment(), TextureView.SurfaceTextureListener, S
 
         val factory = DataSource.Factory { fileDataSource }
         val audioSource = ExtractorMediaSource(fileDataSource.uri, factory, DefaultExtractorsFactory(), null, null)
-        mExoPlayer!!.audioStreamType = AudioManager.STREAM_MUSIC
+        mExoPlayer!!.audioStreamType = C.STREAM_TYPE_MUSIC
         mExoPlayer!!.prepare(audioSource)
     }
 
@@ -241,9 +346,7 @@ class VideoFragment : ViewPagerFragment(), TextureView.SurfaceTextureListener, S
 
             override fun onTracksChanged(trackGroups: TrackGroupArray?, trackSelections: TrackSelectionArray?) {}
 
-            override fun onPlayerError(error: ExoPlaybackException?) {
+            override fun onPlayerError(error: ExoPlaybackException?) {}
-                mIsExoPlayerInitialized = false
-            }
 
             override fun onLoadingChanged(isLoading: Boolean) {}
 
@@ -256,7 +359,6 @@ class VideoFragment : ViewPagerFragment(), TextureView.SurfaceTextureListener, S
             override fun onTimelineChanged(timeline: Timeline?, manifest: Any?, reason: Int) {}
 
             override fun onPlayerStateChanged(playWhenReady: Boolean, playbackState: Int) {
-                mIsExoPlayerInitialized = playbackState == Player.STATE_READY || playbackState == Player.STATE_ENDED
                 when (playbackState) {
                     Player.STATE_READY -> videoPrepared()
                     Player.STATE_ENDED -> videoCompleted()
@@ -264,7 +366,7 @@ class VideoFragment : ViewPagerFragment(), TextureView.SurfaceTextureListener, S
             }
         })
 
-        mExoPlayer!!.addVideoListener(object : VideoListener {
+        mExoPlayer!!.addVideoListener(object : SimpleExoPlayer.VideoListener {
             override fun onVideoSizeChanged(width: Int, height: Int, unappliedRotationDegrees: Int, pixelWidthHeightRatio: Float) {
                 mVideoSize.x = width
                 mVideoSize.y = height
@@ -275,116 +377,169 @@ class VideoFragment : ViewPagerFragment(), TextureView.SurfaceTextureListener, S
         })
     }
 
+    private fun launchVideoPlayer() {
+        listener?.launchViewVideoIntent(mMedium.path)
+    }
+
     private fun toggleFullscreen() {
         listener?.fragmentClicked()
     }
 
-    private fun initTimeHolder() {
+    private fun checkExtendedDetails() {
-        val res = resources
+        if (mConfig.showExtendedDetails) {
-        val left = 0
+            mView.video_details.apply {
-        val top = 0
+                beInvisible()   // make it invisible so we can measure it, but not show yet
-        var right = 0
+                text = getMediumExtendedDetails(mMedium)
-        var bottom = 0
+                onGlobalLayout {
-
+                    if (isAdded) {
-        if (hasNavBar()) {
+                        val realY = getExtendedDetailsY(height)
-            if (res.configuration.orientation == Configuration.ORIENTATION_PORTRAIT) {
+                        if (realY > 0) {
-                bottom += context!!.navigationBarHeight
+                            y = realY
+                            beVisibleIf(text.isNotEmpty())
+                            alpha = if (!mConfig.hideExtendedDetails || !mIsFullscreen) 1f else 0f
+                        }
+                    }
+                }
+            }
         } else {
-                right += context!!.navigationBarWidth
+            mView.video_details.beGone()
-                bottom += context!!.navigationBarHeight
         }
     }
 
-        if (context!!.config.bottomActions) {
+    private fun initTimeHolder() {
+        var right = 0
+        var bottom = context!!.navigationBarHeight
+        if (mConfig.bottomActions) {
             bottom += resources.getDimension(R.dimen.bottom_actions_height).toInt()
         }
 
-        mTimeHolder!!.setPadding(left, top, right, bottom)
+        if (resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE && activity?.hasNavBar() == true) {
+            right += activity!!.navigationBarWidth
+        }
 
-        mCurrTimeView = mView!!.video_curr_time
+        (mTimeHolder.layoutParams as RelativeLayout.LayoutParams).apply {
-        mSeekBar = mView!!.video_seekbar
+            bottomMargin = bottom
-        mSeekBar!!.setOnSeekBarChangeListener(this)
+            rightMargin = right
+        }
+        mTimeHolder.beInvisibleIf(mIsFullscreen)
+    }
 
-        if (mIsFullscreen) {
+    private fun checkIfPanorama() {
-            mTimeHolder!!.beInvisible()
+        try {
+            val fis = FileInputStream(File(mMedium.path))
+            fis.use { fis ->
+                context!!.parseFileChannel(mMedium.path, fis.channel, 0, 0, 0) {
+                    mIsPanorama = true
+                }
+            }
+        } catch (ignored: Exception) {
+        } catch (ignored: OutOfMemoryError) {
         }
     }
 
-    private fun hasNavBar(): Boolean {
+    private fun openPanorama() {
-        return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+        Intent(context, PanoramaVideoActivity::class.java).apply {
-            val display = context!!.windowManager.defaultDisplay
+            putExtra(PATH, mMedium.path)
-
+            startActivity(this)
-            val realDisplayMetrics = DisplayMetrics()
-            display.getRealMetrics(realDisplayMetrics)
-
-            val realHeight = realDisplayMetrics.heightPixels
-            val realWidth = realDisplayMetrics.widthPixels
-
-            val displayMetrics = DisplayMetrics()
-            display.getMetrics(displayMetrics)
-
-            val displayHeight = displayMetrics.heightPixels
-            val displayWidth = displayMetrics.widthPixels
-
-            realWidth - displayWidth > 0 || realHeight - displayHeight > 0
-        } else {
-            val hasMenuKey = ViewConfiguration.get(context).hasPermanentMenuKey()
-            val hasBackKey = KeyCharacterMap.deviceHasKey(KeyEvent.KEYCODE_BACK)
-            !hasMenuKey && !hasBackKey
         }
     }
 
-    private fun setupTimeHolder() {
+    private fun updateInstantSwitchWidths() {
-        mSeekBar!!.max = mDuration
+        val newWidth = resources.getDimension(R.dimen.instant_change_bar_width) + if (activity?.portrait == false) activity!!.navigationBarWidth else 0
-        mView!!.video_duration.text = mDuration.getFormattedDuration()
+        mView.instant_prev_item.layoutParams.width = newWidth.toInt()
-        setupTimer()
+        mView.instant_next_item.layoutParams.width = newWidth.toInt()
     }
 
-    private fun setupTimer() {
+    override fun fullscreenToggled(isFullscreen: Boolean) {
-        activity!!.runOnUiThread(object : Runnable {
+        mIsFullscreen = isFullscreen
-            override fun run() {
+        val newAlpha = if (isFullscreen) 0f else 1f
-                if (mExoPlayer != null && !mIsDragged && mIsPlaying) {
+        if (!mIsFullscreen) {
-                    mCurrTime = (mExoPlayer!!.currentPosition / 1000).toInt()
+            mTimeHolder.beVisible()
-                    mSeekBar!!.progress = mCurrTime
-                    mCurrTimeView!!.text = mCurrTime.getFormattedDuration()
         }
 
-                mTimerHandler.postDelayed(this, 1000)
+        mSeekBar.setOnSeekBarChangeListener(if (mIsFullscreen) null else this)
-            }
+        arrayOf(mView.video_curr_time, mView.video_duration).forEach {
-        })
+            it.isClickable = !mIsFullscreen
         }
 
-    override fun onSaveInstanceState(outState: Bundle) {
+        mTimeHolder.animate().alpha(newAlpha).start()
-        super.onSaveInstanceState(outState)
+        mView.video_details.apply {
-        outState.putInt(PROGRESS, mCurrTime)
+            if (mStoredShowExtendedDetails && isVisible()) {
+                animate().y(getExtendedDetailsY(height))
+
+                if (mStoredHideExtendedDetails) {
+                    animate().alpha(newAlpha).start()
+                }
+            }
+        }
     }
 
-    private fun checkFullscreen() {
+    private fun getExtendedDetailsY(height: Int): Float {
-        if (activity == null) {
+        val smallMargin = resources.getDimension(R.dimen.small_margin)
+        val fullscreenOffset = smallMargin + if (mIsFullscreen) 0 else context!!.navigationBarHeight
+        var actionsHeight = 0f
+        if (!mIsFullscreen) {
+            actionsHeight += resources.getDimension(R.dimen.video_player_play_pause_size)
+            if (mConfig.bottomActions) {
+                actionsHeight += resources.getDimension(R.dimen.bottom_actions_height)
+            }
+        }
+        return context!!.realScreenSize.y - height - actionsHeight - fullscreenOffset
+    }
+
+    private fun skip(forward: Boolean) {
+        if (mExoPlayer == null || mIsPanorama) {
             return
         }
 
-        var anim = android.R.anim.fade_in
+        val curr = mExoPlayer!!.currentPosition
-        if (mIsFullscreen) {
+        val twoPercents = Math.max((mExoPlayer!!.duration / 50).toInt(), MIN_SKIP_LENGTH)
-            anim = android.R.anim.fade_out
+        val newProgress = if (forward) curr + twoPercents else curr - twoPercents
-            mSeekBar!!.setOnSeekBarChangeListener(null)
+        val roundProgress = Math.round(newProgress / 1000f)
-        } else {
+        val limitedProgress = Math.max(Math.min(mExoPlayer!!.duration.toInt(), roundProgress), 0)
-            mSeekBar!!.setOnSeekBarChangeListener(this)
+        setPosition(limitedProgress)
+        if (!mIsPlaying) {
+            togglePlayPause()
+        }
     }
 
-        AnimationUtils.loadAnimation(activity, anim).apply {
+    override fun onProgressChanged(seekBar: SeekBar, progress: Int, fromUser: Boolean) {
-            duration = 150
+        if (mExoPlayer != null && fromUser) {
-            fillAfter = true
+            setPosition(progress)
-            mTimeHolder?.startAnimation(this)
         }
     }
 
+    override fun onStartTrackingTouch(seekBar: SeekBar) {
+        if (mExoPlayer == null)
+            return
+
+        mExoPlayer!!.playWhenReady = false
+        mIsDragged = true
+    }
+
+    override fun onStopTrackingTouch(seekBar: SeekBar) {
+        if (mIsPanorama) {
+            openPanorama()
+            return
+        }
+
+        if (mExoPlayer == null)
+            return
+
+        if (mIsPlaying) {
+            mExoPlayer!!.playWhenReady = true
+        } else {
+            togglePlayPause()
+        }
+
+        mIsDragged = false
+    }
+
     private fun togglePlayPause() {
         if (activity == null || !isAdded)
             return
 
         mIsPlaying = !mIsPlaying
-        mHidePauseHandler.removeCallbacksAndMessages(null)
         if (mIsPlaying) {
             playVideo()
         } else {
@@ -397,20 +552,39 @@ class VideoFragment : ViewPagerFragment(), TextureView.SurfaceTextureListener, S
             return
         }
 
-        if (mView!!.video_preview.isVisible()) {
+        if (mView.video_preview.isVisible()) {
-            mView!!.video_preview.beGone()
+            mView.video_preview.beGone()
             initExoPlayer()
         }
 
-        if (videoEnded()) {
+        val wasEnded = videoEnded()
-            setProgress(0)
+        if (wasEnded) {
+            setPosition(0)
         }
 
+        if (mStoredRememberLastVideoPosition) {
+            setLastVideoSavedPosition()
+            clearLastVideoSavedProgress()
+        }
+
+        if (!wasEnded || !mConfig.loopVideos) {
+            mPlayPauseButton.setImageResource(R.drawable.ic_pause_outline)
+        }
+
+        if (!mWasVideoStarted) {
+            mView.video_play_outline.beGone()
+            mPlayPauseButton.beVisible()
+        }
+
+        mWasVideoStarted = true
         mIsPlaying = true
         mExoPlayer?.playWhenReady = true
-        mView!!.video_play_outline.setImageResource(R.drawable.ic_pause)
         activity!!.window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
-        schedulePlayPauseFadeOut()
+    }
+
+    private fun clearLastVideoSavedProgress() {
+        mStoredLastVideoPosition = 0
+        mStoredLastVideoPath = ""
     }
 
     private fun pauseVideo() {
@@ -423,46 +597,35 @@ class VideoFragment : ViewPagerFragment(), TextureView.SurfaceTextureListener, S
             mExoPlayer?.playWhenReady = false
         }
 
-        mView?.video_play_outline?.setImageResource(R.drawable.ic_play)
+        mPlayPauseButton.setImageResource(R.drawable.ic_play_outline)
-        mView?.video_play_outline?.alpha = PLAY_PAUSE_VISIBLE_ALPHA
         activity?.window?.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
-        schedulePlayPauseFadeOut()
     }
 
-    private fun schedulePlayPauseFadeOut() {
+    private fun videoEnded(): Boolean {
-        mHidePauseHandler.removeCallbacksAndMessages(null)
+        val currentPos = mExoPlayer?.currentPosition ?: 0
-        mHidePauseHandler.postDelayed({
+        val duration = mExoPlayer?.duration ?: 0
-            mView!!.video_play_outline.animate().alpha(0f).start()
+        return currentPos != 0L && currentPos >= duration
-        }, HIDE_PAUSE_DELAY)
     }
 
-    private fun videoEnded() = mExoPlayer?.currentPosition ?: 0 >= mExoPlayer?.duration ?: 0
+    private fun setPosition(seconds: Int) {
-
+        mExoPlayer?.seekTo(seconds * 1000L)
-    private fun setProgress(seconds: Int) {
+        mSeekBar.progress = seconds
-        mExoPlayer!!.seekTo(seconds * 1000L)
+        mCurrTimeView.text = seconds.getFormattedDuration()
-        mSeekBar!!.progress = seconds
-        mCurrTimeView!!.text = seconds.getFormattedDuration()
     }
 
     private fun setupVideoDuration() {
-        try {
+        mDuration = mMedium.path.getVideoDuration()
-            val retriever = MediaMetadataRetriever()
-            retriever.setDataSource(medium.path)
-            mDuration = Math.round(retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION).toInt() / 1000f)
-        } catch (ignored: Exception) {
-        }
-
         setupTimeHolder()
-        setProgress(0)
+        setPosition(0)
     }
 
     private fun videoPrepared() {
         if (mDuration == 0) {
             mDuration = (mExoPlayer!!.duration / 1000).toInt()
             setupTimeHolder()
-            setProgress(mCurrTime)
+            setPosition(mCurrTime)
 
-            if (mIsFragmentVisible && (context!!.config.autoplayVideos)) {
+            if (mIsFragmentVisible && (mConfig.autoplayVideos)) {
                 playVideo()
             }
         }
@@ -474,23 +637,24 @@ class VideoFragment : ViewPagerFragment(), TextureView.SurfaceTextureListener, S
         }
 
         mCurrTime = (mExoPlayer!!.duration / 1000).toInt()
-        if (listener?.videoEnded() == false && context!!.config.loopVideos) {
+        if (listener?.videoEnded() == false && mConfig.loopVideos) {
             playVideo()
         } else {
-            mSeekBar!!.progress = mSeekBar!!.max
+            mSeekBar.progress = mSeekBar.max
-            mCurrTimeView!!.text = mDuration.getFormattedDuration()
+            mCurrTimeView.text = mDuration.getFormattedDuration()
             pauseVideo()
         }
     }
 
     private fun cleanup() {
         pauseVideo()
-        mCurrTimeView?.text = 0.getFormattedDuration()
         releaseExoPlayer()
-        mSeekBar?.progress = 0
+
+        if (mWasFragmentInit) {
+            mCurrTimeView.text = 0.getFormattedDuration()
+            mSeekBar.progress = 0
             mTimerHandler.removeCallbacksAndMessages(null)
-        mHidePauseHandler.removeCallbacksAndMessages(null)
+        }
-        mTextureView = null
     }
 
     private fun releaseExoPlayer() {
@@ -509,33 +673,28 @@ class VideoFragment : ViewPagerFragment(), TextureView.SurfaceTextureListener, S
 
     override fun onSurfaceTextureAvailable(surface: SurfaceTexture?, width: Int, height: Int) {
         Thread {
-            mExoPlayer?.setVideoSurface(Surface(mTextureView!!.surfaceTexture))
+            mExoPlayer?.setVideoSurface(Surface(mTextureView.surfaceTexture))
         }.start()
     }
 
-    @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
     private fun setVideoSize() {
-        if (activity == null || mTextureView == null)
+        if (activity == null || mConfig.openVideosOnSeparateScreen) {
             return
+        }
 
         val videoProportion = mVideoSize.x.toFloat() / mVideoSize.y.toFloat()
         val display = activity!!.windowManager.defaultDisplay
         val screenWidth: Int
         val screenHeight: Int
 
-        if (isJellyBean1Plus()) {
         val realMetrics = DisplayMetrics()
         display.getRealMetrics(realMetrics)
         screenWidth = realMetrics.widthPixels
         screenHeight = realMetrics.heightPixels
-        } else {
-            screenWidth = display.width
-            screenHeight = display.height
-        }
 
         val screenProportion = screenWidth.toFloat() / screenHeight.toFloat()
 
-        mTextureView!!.layoutParams.apply {
+        mTextureView.layoutParams.apply {
             if (videoProportion > screenProportion) {
                 width = screenWidth
                 height = (screenWidth.toFloat() / videoProportion).toInt()
@@ -543,92 +702,7 @@ class VideoFragment : ViewPagerFragment(), TextureView.SurfaceTextureListener, S
                 width = (videoProportion * screenHeight.toFloat()).toInt()
                 height = screenHeight
             }
-            mTextureView!!.layoutParams = this
+            mTextureView.layoutParams = this
-        }
-    }
-
-    private fun checkExtendedDetails() {
-        if (context!!.config.showExtendedDetails) {
-            mView!!.video_details.apply {
-                beInvisible()   // make it invisible so we can measure it, but not show yet
-                text = getMediumExtendedDetails(medium)
-                onGlobalLayout {
-                    if (isAdded) {
-                        val realY = getExtendedDetailsY(height)
-                        if (realY > 0) {
-                            y = realY
-                            beVisibleIf(text.isNotEmpty())
-                            alpha = if (!context!!.config.hideExtendedDetails || !mIsFullscreen) 1f else 0f
         }
     }
 }
-            }
-        } else {
-            mView!!.video_details.beGone()
-        }
-    }
-
-    private fun skip(forward: Boolean) {
-        if (mExoPlayer == null) {
-            return
-        }
-
-        val curr = mExoPlayer!!.currentPosition
-        val twoPercents = Math.max((mExoPlayer!!.duration / 50).toInt(), MIN_SKIP_LENGTH)
-        val newProgress = if (forward) curr + twoPercents else curr - twoPercents
-        val roundProgress = Math.round(newProgress / 1000f)
-        val limitedProgress = Math.max(Math.min(mExoPlayer!!.duration.toInt(), roundProgress), 0)
-        setProgress(limitedProgress)
-        if (!mIsPlaying) {
-            togglePlayPause()
-        }
-    }
-
-    override fun onProgressChanged(seekBar: SeekBar, progress: Int, fromUser: Boolean) {
-        if (mExoPlayer != null && fromUser) {
-            setProgress(progress)
-        }
-    }
-
-    override fun onStartTrackingTouch(seekBar: SeekBar) {
-        if (mExoPlayer == null)
-            return
-
-        mExoPlayer!!.playWhenReady = false
-        mIsDragged = true
-    }
-
-    override fun onStopTrackingTouch(seekBar: SeekBar) {
-        if (mExoPlayer == null)
-            return
-
-        if (!mIsPlaying) {
-            togglePlayPause()
-        } else {
-            mExoPlayer!!.playWhenReady = true
-        }
-
-        mIsDragged = false
-    }
-
-    override fun fullscreenToggled(isFullscreen: Boolean) {
-        mIsFullscreen = isFullscreen
-        checkFullscreen()
-        mView!!.video_details.apply {
-            if (mStoredShowExtendedDetails && isVisible()) {
-                animate().y(getExtendedDetailsY(height))
-
-                if (mStoredHideExtendedDetails) {
-                    animate().alpha(if (isFullscreen) 0f else 1f).start()
-                }
-            }
-        }
-    }
-
-    private fun getExtendedDetailsY(height: Int): Float {
-        val smallMargin = resources.getDimension(R.dimen.small_margin)
-        val timeHolderHeight = mTimeHolder!!.height - context!!.navigationBarHeight.toFloat()
-        val fullscreenOffset = context!!.navigationBarHeight.toFloat() - smallMargin
-        return context!!.usableScreenSize.y - height + if (mIsFullscreen) fullscreenOffset else -(timeHolderHeight + smallMargin)
-    }
-}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/fragments/ViewPagerFragment.kt

@@ -0,0 +1,119 @@
+package com.simplemobiletools.gallery.pro.fragments
+
+import android.provider.MediaStore
+import android.view.MotionEvent
+import androidx.fragment.app.Fragment
+import com.simplemobiletools.commons.extensions.*
+import com.simplemobiletools.commons.helpers.OTG_PATH
+import com.simplemobiletools.gallery.pro.extensions.config
+import com.simplemobiletools.gallery.pro.helpers.*
+import com.simplemobiletools.gallery.pro.models.Medium
+import java.io.File
+
+abstract class ViewPagerFragment : Fragment() {
+    var listener: FragmentListener? = null
+
+    protected var mTouchDownTime = 0L
+    protected var mTouchDownX = 0f
+    protected var mTouchDownY = 0f
+    protected var mCloseDownThreshold = 100f
+    protected var mIgnoreCloseDown = false
+
+    abstract fun fullscreenToggled(isFullscreen: Boolean)
+
+    interface FragmentListener {
+        fun fragmentClicked()
+
+        fun videoEnded(): Boolean
+
+        fun goToPrevItem()
+
+        fun goToNextItem()
+
+        fun launchViewVideoIntent(path: String)
+    }
+
+    fun getMediumExtendedDetails(medium: Medium): String {
+        val file = File(medium.path)
+        if (!file.exists()) {
+            return ""
+        }
+
+        val path = "${file.parent.trimEnd('/')}/"
+        val exif = android.media.ExifInterface(medium.path)
+        val details = StringBuilder()
+        val detailsFlag = context!!.config.extendedDetails
+        if (detailsFlag and EXT_NAME != 0) {
+            medium.name.let { if (it.isNotEmpty()) details.appendln(it) }
+        }
+
+        if (detailsFlag and EXT_PATH != 0) {
+            path.let { if (it.isNotEmpty()) details.appendln(it) }
+        }
+
+        if (detailsFlag and EXT_SIZE != 0) {
+            file.length().formatSize().let { if (it.isNotEmpty()) details.appendln(it) }
+        }
+
+        if (detailsFlag and EXT_RESOLUTION != 0) {
+            file.absolutePath.getResolution()?.formatAsResolution().let { if (it?.isNotEmpty() == true) details.appendln(it) }
+        }
+
+        if (detailsFlag and EXT_LAST_MODIFIED != 0) {
+            getFileLastModified(file).let { if (it.isNotEmpty()) details.appendln(it) }
+        }
+
+        if (detailsFlag and EXT_DATE_TAKEN != 0) {
+            path.getExifDateTaken(exif).let { if (it.isNotEmpty()) details.appendln(it) }
+        }
+
+        if (detailsFlag and EXT_CAMERA_MODEL != 0) {
+            path.getExifCameraModel(exif).let { if (it.isNotEmpty()) details.appendln(it) }
+        }
+
+        if (detailsFlag and EXT_EXIF_PROPERTIES != 0) {
+            path.getExifProperties(exif).let { if (it.isNotEmpty()) details.appendln(it) }
+        }
+        return details.toString().trim()
+    }
+
+    fun getPathToLoad(medium: Medium) = if (medium.path.startsWith(OTG_PATH)) medium.path.getOTGPublicPath(context!!) else medium.path
+
+    private fun getFileLastModified(file: File): String {
+        val projection = arrayOf(MediaStore.Images.Media.DATE_MODIFIED)
+        val uri = MediaStore.Files.getContentUri("external")
+        val selection = "${MediaStore.MediaColumns.DATA} = ?"
+        val selectionArgs = arrayOf(file.absolutePath)
+        val cursor = context!!.contentResolver.query(uri, projection, selection, selectionArgs, null)
+        cursor?.use {
+            return if (cursor.moveToFirst()) {
+                val dateModified = cursor.getLongValue(MediaStore.Images.Media.DATE_MODIFIED) * 1000L
+                dateModified.formatDate()
+            } else {
+                file.lastModified().formatDate()
+            }
+        }
+        return ""
+    }
+
+    protected fun handleEvent(event: MotionEvent) {
+        when (event.actionMasked) {
+            MotionEvent.ACTION_DOWN -> {
+                mTouchDownTime = System.currentTimeMillis()
+                mTouchDownX = event.x
+                mTouchDownY = event.y
+            }
+            MotionEvent.ACTION_POINTER_DOWN -> mIgnoreCloseDown = true
+            MotionEvent.ACTION_UP, MotionEvent.ACTION_CANCEL -> {
+                val diffX = mTouchDownX - event.x
+                val diffY = mTouchDownY - event.y
+
+                val downGestureDuration = System.currentTimeMillis() - mTouchDownTime
+                if (!mIgnoreCloseDown && Math.abs(diffY) > Math.abs(diffX) && diffY < -mCloseDownThreshold && downGestureDuration < MAX_CLOSE_DOWN_GESTURE_DURATION) {
+                    activity?.supportFinishAfterTransition()
+                }
+                mIgnoreCloseDown = false
+            }
+        }
+    }
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/helpers/Config.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.helpers
+package com.simplemobiletools.gallery.pro.helpers
 
 import android.content.Context
 import android.content.res.Configuration
@@ -8,8 +8,8 @@ import com.google.gson.reflect.TypeToken
 import com.simplemobiletools.commons.helpers.BaseConfig
 import com.simplemobiletools.commons.helpers.SORT_BY_DATE_MODIFIED
 import com.simplemobiletools.commons.helpers.SORT_DESCENDING
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.models.AlbumCover
+import com.simplemobiletools.gallery.pro.models.AlbumCover
 import java.util.*
 
 class Config(context: Context) : BaseConfig(context) {
@@ -59,6 +59,22 @@ class Config(context: Context) : BaseConfig(context) {
 
     fun hasCustomGrouping(path: String) = prefs.contains(GROUP_FOLDER_PREFIX + path.toLowerCase())
 
+    fun saveFolderViewType(path: String, value: Int) {
+        if (path.isEmpty()) {
+            viewTypeFiles = value
+        } else {
+            prefs.edit().putInt(VIEW_TYPE_PREFIX + path.toLowerCase(), value).apply()
+        }
+    }
+
+    fun getFolderViewType(path: String) = prefs.getInt(VIEW_TYPE_PREFIX + path.toLowerCase(), viewTypeFiles)
+
+    fun removeFolderViewType(path: String) {
+        prefs.edit().remove(VIEW_TYPE_PREFIX + path.toLowerCase()).apply()
+    }
+
+    fun hasCustomViewType(path: String) = prefs.contains(VIEW_TYPE_PREFIX + path.toLowerCase())
+
     var wasHideFolderTooltipShown: Boolean
         get() = prefs.getBoolean(HIDE_FOLDER_TOOLTIP_SHOWN, false)
         set(wasShown) = prefs.edit().putBoolean(HIDE_FOLDER_TOOLTIP_SHOWN, wasShown).apply()
@@ -88,7 +104,10 @@ class Config(context: Context) : BaseConfig(context) {
     fun addPinnedFolders(paths: Set<String>) {
         val currPinnedFolders = HashSet<String>(pinnedFolders)
         currPinnedFolders.addAll(paths)
-        pinnedFolders = currPinnedFolders
+        pinnedFolders = currPinnedFolders.filter { it.isNotEmpty() }.toHashSet()
+        if (paths.contains(RECYCLE_BIN)) {
+            showRecycleBinLast = false
+        }
     }
 
     fun removePinnedFolders(paths: Set<String>) {
@@ -104,7 +123,7 @@ class Config(context: Context) : BaseConfig(context) {
     fun addExcludedFolders(paths: Set<String>) {
         val currExcludedFolders = HashSet<String>(excludedFolders)
         currExcludedFolders.addAll(paths)
-        excludedFolders = currExcludedFolders
+        excludedFolders = currExcludedFolders.filter { it.isNotEmpty() }.toHashSet()
     }
 
     fun removeExcludedFolder(path: String) {
@@ -114,23 +133,21 @@ class Config(context: Context) : BaseConfig(context) {
     }
 
     var excludedFolders: MutableSet<String>
-        get() = prefs.getStringSet(EXCLUDED_FOLDERS, getDataFolder())
+        get() = prefs.getStringSet(EXCLUDED_FOLDERS, HashSet())
         set(excludedFolders) = prefs.edit().remove(EXCLUDED_FOLDERS).putStringSet(EXCLUDED_FOLDERS, excludedFolders).apply()
 
-    private fun getDataFolder(): Set<String> {
-        val folders = HashSet<String>()
-        val dataFolder = context.externalCacheDir?.parentFile?.parent?.trimEnd('/') ?: ""
-        if (dataFolder.endsWith("data"))
-            folders.add(dataFolder)
-        return folders
-    }
-
     fun addIncludedFolder(path: String) {
         val currIncludedFolders = HashSet<String>(includedFolders)
         currIncludedFolders.add(path)
         includedFolders = currIncludedFolders
     }
 
+    fun addIncludedFolders(paths: Set<String>) {
+        val currIncludedFolders = HashSet<String>(includedFolders)
+        currIncludedFolders.addAll(paths)
+        includedFolders = currIncludedFolders.filter { it.isNotEmpty() }.toHashSet()
+    }
+
     fun removeIncludedFolder(path: String) {
         val currIncludedFolders = HashSet<String>(includedFolders)
         currIncludedFolders.remove(path)
@@ -143,7 +160,7 @@ class Config(context: Context) : BaseConfig(context) {
 
     var autoplayVideos: Boolean
         get() = prefs.getBoolean(AUTOPLAY_VIDEOS, false)
-        set(autoplay) = prefs.edit().putBoolean(AUTOPLAY_VIDEOS, autoplay).apply()
+        set(autoplayVideos) = prefs.edit().putBoolean(AUTOPLAY_VIDEOS, autoplayVideos).apply()
 
     var animateGifs: Boolean
         get() = prefs.getBoolean(ANIMATE_GIFS, false)
@@ -157,6 +174,10 @@ class Config(context: Context) : BaseConfig(context) {
         get() = prefs.getBoolean(CROP_THUMBNAILS, true)
         set(cropThumbnails) = prefs.edit().putBoolean(CROP_THUMBNAILS, cropThumbnails).apply()
 
+    var showThumbnailVideoDuration: Boolean
+        get() = prefs.getBoolean(SHOW_THUMBNAIL_VIDEO_DURATION, false)
+        set(showThumbnailVideoDuration) = prefs.edit().putBoolean(SHOW_THUMBNAIL_VIDEO_DURATION, showThumbnailVideoDuration).apply()
+
     var screenRotation: Int
         get() = prefs.getInt(SCREEN_ROTATION, ROTATE_BY_SYSTEM_SETTING)
         set(screenRotation) = prefs.edit().putInt(SCREEN_ROTATION, screenRotation).apply()
@@ -165,13 +186,17 @@ class Config(context: Context) : BaseConfig(context) {
         get() = prefs.getBoolean(LOOP_VIDEOS, false)
         set(loop) = prefs.edit().putBoolean(LOOP_VIDEOS, loop).apply()
 
+    var openVideosOnSeparateScreen: Boolean
+        get() = prefs.getBoolean(OPEN_VIDEOS_ON_SEPARATE_SCREEN, false)
+        set(openVideosOnSeparateScreen) = prefs.edit().putBoolean(OPEN_VIDEOS_ON_SEPARATE_SCREEN, openVideosOnSeparateScreen).apply()
+
     var displayFileNames: Boolean
         get() = prefs.getBoolean(DISPLAY_FILE_NAMES, false)
         set(display) = prefs.edit().putBoolean(DISPLAY_FILE_NAMES, display).apply()
 
     var blackBackground: Boolean
-        get() = prefs.getBoolean(DARK_BACKGROUND, false)
+        get() = prefs.getBoolean(BLACK_BACKGROUND, false)
-        set(darkBackground) = prefs.edit().putBoolean(DARK_BACKGROUND, darkBackground).apply()
+        set(blackBackground) = prefs.edit().putBoolean(BLACK_BACKGROUND, blackBackground).apply()
 
     var filterMedia: Int
         get() = prefs.getInt(FILTER_MEDIA, TYPE_IMAGES or TYPE_VIDEOS or TYPE_GIFS or TYPE_RAWS or TYPE_SVGS)
@@ -181,10 +206,6 @@ class Config(context: Context) : BaseConfig(context) {
         get() = prefs.getInt(getDirectoryColumnsField(), getDefaultDirectoryColumnCount())
         set(dirColumnCnt) = prefs.edit().putInt(getDirectoryColumnsField(), dirColumnCnt).apply()
 
-    var oneFingerZoom: Boolean
-        get() = prefs.getBoolean(ONE_FINGER_ZOOM, false)
-        set(oneFingerZoom) = prefs.edit().putBoolean(ONE_FINGER_ZOOM, oneFingerZoom).apply()
-
     var allowInstantChange: Boolean
         get() = prefs.getBoolean(ALLOW_INSTANT_CHANGE, false)
         set(allowInstantChange) = prefs.edit().putBoolean(ALLOW_INSTANT_CHANGE, allowInstantChange).apply()
@@ -266,10 +287,6 @@ class Config(context: Context) : BaseConfig(context) {
         get() = prefs.getInt(SLIDESHOW_INTERVAL, SLIDESHOW_DEFAULT_INTERVAL)
         set(slideshowInterval) = prefs.edit().putInt(SLIDESHOW_INTERVAL, slideshowInterval).apply()
 
-    var slideshowIncludePhotos: Boolean
-        get() = prefs.getBoolean(SLIDESHOW_INCLUDE_PHOTOS, true)
-        set(slideshowIncludePhotos) = prefs.edit().putBoolean(SLIDESHOW_INCLUDE_PHOTOS, slideshowIncludePhotos).apply()
-
     var slideshowIncludeVideos: Boolean
         get() = prefs.getBoolean(SLIDESHOW_INCLUDE_VIDEOS, false)
         set(slideshowIncludeVideos) = prefs.edit().putBoolean(SLIDESHOW_INCLUDE_VIDEOS, slideshowIncludeVideos).apply()
@@ -362,6 +379,18 @@ class Config(context: Context) : BaseConfig(context) {
         get() = prefs.getBoolean(BOTTOM_ACTIONS, true)
         set(bottomActions) = prefs.edit().putBoolean(BOTTOM_ACTIONS, bottomActions).apply()
 
+    var rememberLastVideoPosition: Boolean
+        get() = prefs.getBoolean(REMEMBER_LAST_VIDEO_POSITION, false)
+        set(rememberLastVideoPosition) = prefs.edit().putBoolean(REMEMBER_LAST_VIDEO_POSITION, rememberLastVideoPosition).apply()
+
+    var lastVideoPath: String
+        get() = prefs.getString(LAST_VIDEO_PATH, "")
+        set(lastVideoPath) = prefs.edit().putString(LAST_VIDEO_PATH, lastVideoPath).apply()
+
+    var lastVideoPosition: Int
+        get() = prefs.getInt(LAST_VIDEO_POSITION, 0)
+        set(lastVideoPosition) = prefs.edit().putInt(LAST_VIDEO_POSITION, lastVideoPosition).apply()
+
     var visibleBottomActions: Int
         get() = prefs.getInt(VISIBLE_BOTTOM_ACTIONS, DEFAULT_BOTTOM_ACTIONS)
         set(visibleBottomActions) = prefs.edit().putInt(VISIBLE_BOTTOM_ACTIONS, visibleBottomActions).apply()
@@ -371,10 +400,12 @@ class Config(context: Context) : BaseConfig(context) {
         get() = prefs.getStringSet(EVER_SHOWN_FOLDERS, getEverShownFolders())
         set(everShownFolders) = prefs.edit().putStringSet(EVER_SHOWN_FOLDERS, everShownFolders).apply()
 
-    fun getEverShownFolders() = hashSetOf(
+    private fun getEverShownFolders() = hashSetOf(
             internalStoragePath,
-            Environment.DIRECTORY_DCIM,
+            Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM).absolutePath,
-            Environment.DIRECTORY_PICTURES
+            Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).absolutePath,
+            Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).absolutePath,
+            "${Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).absolutePath}/Screenshots"
     )
 
     var showRecycleBinAtFolders: Boolean
@@ -388,4 +419,52 @@ class Config(context: Context) : BaseConfig(context) {
     var lastBinCheck: Long
         get() = prefs.getLong(LAST_BIN_CHECK, 0L)
         set(lastBinCheck) = prefs.edit().putLong(LAST_BIN_CHECK, lastBinCheck).apply()
+
+    var showHighestQuality: Boolean
+        get() = prefs.getBoolean(SHOW_HIGHEST_QUALITY, false)
+        set(showHighestQuality) = prefs.edit().putBoolean(SHOW_HIGHEST_QUALITY, showHighestQuality).apply()
+
+    var showRecycleBinLast: Boolean
+        get() = prefs.getBoolean(SHOW_RECYCLE_BIN_LAST, false)
+        set(showRecycleBinLast) = prefs.edit().putBoolean(SHOW_RECYCLE_BIN_LAST, showRecycleBinLast).apply()
+
+    var allowDownGesture: Boolean
+        get() = prefs.getBoolean(ALLOW_DOWN_GESTURE, true)
+        set(allowDownGesture) = prefs.edit().putBoolean(ALLOW_DOWN_GESTURE, allowDownGesture).apply()
+
+    var lastEditorCropAspectRatio: Int
+        get() = prefs.getInt(LAST_EDITOR_CROP_ASPECT_RATIO, ASPECT_RATIO_FREE)
+        set(lastEditorCropAspectRatio) = prefs.edit().putInt(LAST_EDITOR_CROP_ASPECT_RATIO, lastEditorCropAspectRatio).apply()
+
+    var lastEditorCropOtherAspectRatioX: Int
+        get() = prefs.getInt(LAST_EDITOR_CROP_OTHER_ASPECT_RATIO_X, 2)
+        set(lastEditorCropOtherAspectRatioX) = prefs.edit().putInt(LAST_EDITOR_CROP_OTHER_ASPECT_RATIO_X, lastEditorCropOtherAspectRatioX).apply()
+
+    var lastEditorCropOtherAspectRatioY: Int
+        get() = prefs.getInt(LAST_EDITOR_CROP_OTHER_ASPECT_RATIO_Y, 1)
+        set(lastEditorCropOtherAspectRatioY) = prefs.edit().putInt(LAST_EDITOR_CROP_OTHER_ASPECT_RATIO_Y, lastEditorCropOtherAspectRatioY).apply()
+
+    var groupDirectSubfolders: Boolean
+        get() = prefs.getBoolean(GROUP_DIRECT_SUBFOLDERS, false)
+        set(groupDirectSubfolders) = prefs.edit().putBoolean(GROUP_DIRECT_SUBFOLDERS, groupDirectSubfolders).apply()
+
+    var showWidgetFolderName: Boolean
+        get() = prefs.getBoolean(SHOW_WIDGET_FOLDER_NAME, true)
+        set(showWidgetFolderName) = prefs.edit().putBoolean(SHOW_WIDGET_FOLDER_NAME, showWidgetFolderName).apply()
+
+    var allowOneToOneZoom: Boolean
+        get() = prefs.getBoolean(ALLOW_ONE_TO_ONE_ZOOM, false)
+        set(allowOneToOneZoom) = prefs.edit().putBoolean(ALLOW_ONE_TO_ONE_ZOOM, allowOneToOneZoom).apply()
+
+    var lastEditorDrawColor: Int
+        get() = prefs.getInt(LAST_EDITOR_DRAW_COLOR, primaryColor)
+        set(lastEditorDrawColor) = prefs.edit().putInt(LAST_EDITOR_DRAW_COLOR, lastEditorDrawColor).apply()
+
+    var lastEditorBrushSize: Int
+        get() = prefs.getInt(LAST_EDITOR_BRUSH_SIZE, 50)
+        set(lastEditorBrushSize) = prefs.edit().putInt(LAST_EDITOR_BRUSH_SIZE, lastEditorBrushSize).apply()
+
+    var showNotch: Boolean
+        get() = prefs.getBoolean(SHOW_NOTCH, true)
+        set(showNotch) = prefs.edit().putBoolean(SHOW_NOTCH, showNotch).apply()
 }

app/src/main/kotlin/com/simplemobiletools/gallery/pro/helpers/Constants.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.helpers
+package com.simplemobiletools.gallery.pro.helpers
 
 import com.simplemobiletools.commons.helpers.MONTH_SECONDS
 
@@ -6,17 +6,21 @@ import com.simplemobiletools.commons.helpers.MONTH_SECONDS
 const val DIRECTORY_SORT_ORDER = "directory_sort_order"
 const val SORT_FOLDER_PREFIX = "sort_folder_"
 const val GROUP_FOLDER_PREFIX = "group_folder_"
+const val VIEW_TYPE_PREFIX = "view_type_folder_"
 const val SHOW_HIDDEN_MEDIA = "show_hidden_media"
 const val TEMPORARILY_SHOW_HIDDEN = "temporarily_show_hidden"
 const val IS_THIRD_PARTY_INTENT = "is_third_party_intent"
 const val AUTOPLAY_VIDEOS = "autoplay_videos"
+const val REMEMBER_LAST_VIDEO_POSITION = "remember_last_video_position"
 const val LOOP_VIDEOS = "loop_videos"
+const val OPEN_VIDEOS_ON_SEPARATE_SCREEN = "open_videos_on_separate_screen"
 const val ANIMATE_GIFS = "animate_gifs"
 const val MAX_BRIGHTNESS = "max_brightness"
 const val CROP_THUMBNAILS = "crop_thumbnails"
+const val SHOW_THUMBNAIL_VIDEO_DURATION = "show_thumbnail_video_duration"
 const val SCREEN_ROTATION = "screen_rotation"
 const val DISPLAY_FILE_NAMES = "display_file_names"
-const val DARK_BACKGROUND = "dark_background"
+const val BLACK_BACKGROUND = "dark_background"
 const val PINNED_FOLDERS = "pinned_folders"
 const val FILTER_MEDIA = "filter_media"
 const val DIR_COLUMN_CNT = "dir_column_cnt"
@@ -43,7 +47,6 @@ const val VIEW_TYPE_FILES = "view_type_files"
 const val SHOW_EXTENDED_DETAILS = "show_extended_details"
 const val EXTENDED_DETAILS = "extended_details"
 const val HIDE_EXTENDED_DETAILS = "hide_extended_details"
-const val ONE_FINGER_ZOOM = "one_finger_zoom"
 const val ALLOW_INSTANT_CHANGE = "allow_instant_change"
 const val DO_EXTRA_CHECK = "do_extra_check"
 const val WAS_NEW_APP_SHOWN = "was_new_app_shown_clock"
@@ -51,6 +54,8 @@ const val LAST_FILEPICKER_PATH = "last_filepicker_path"
 const val WAS_OTG_HANDLED = "was_otg_handled"
 const val TEMP_SKIP_DELETE_CONFIRMATION = "temp_skip_delete_confirmation"
 const val BOTTOM_ACTIONS = "bottom_actions"
+const val LAST_VIDEO_PATH = "last_video_path"
+const val LAST_VIDEO_POSITION = "last_video_position"
 const val VISIBLE_BOTTOM_ACTIONS = "visible_bottom_actions"
 const val WERE_FAVORITES_PINNED = "were_favorites_pinned"
 const val WAS_RECYCLE_BIN_PINNED = "was_recycle_bin_pinned"
@@ -58,13 +63,24 @@ const val USE_RECYCLE_BIN = "use_recycle_bin"
 const val GROUP_BY = "group_by"
 const val EVER_SHOWN_FOLDERS = "ever_shown_folders"
 const val SHOW_RECYCLE_BIN_AT_FOLDERS = "show_recycle_bin_at_folders"
+const val SHOW_RECYCLE_BIN_LAST = "show_recycle_bin_last"
 const val ALLOW_ZOOMING_IMAGES = "allow_zooming_images"
 const val WAS_SVG_SHOWING_HANDLED = "was_svg_showing_handled"
 const val LAST_BIN_CHECK = "last_bin_check"
+const val SHOW_HIGHEST_QUALITY = "show_highest_quality"
+const val ALLOW_DOWN_GESTURE = "allow_down_gesture"
+const val LAST_EDITOR_CROP_ASPECT_RATIO = "last_editor_crop_aspect_ratio"
+const val LAST_EDITOR_CROP_OTHER_ASPECT_RATIO_X = "last_editor_crop_other_aspect_ratio_x"
+const val LAST_EDITOR_CROP_OTHER_ASPECT_RATIO_Y = "last_editor_crop_other_aspect_ratio_y"
+const val GROUP_DIRECT_SUBFOLDERS = "group_direct_subfolders"
+const val SHOW_WIDGET_FOLDER_NAME = "show_widget_folder_name"
+const val ALLOW_ONE_TO_ONE_ZOOM = "allow_one_to_one_zoom"
+const val LAST_EDITOR_DRAW_COLOR = "last_editor_draw_color"
+const val LAST_EDITOR_BRUSH_SIZE = "last_editor_brush_size"
+const val SHOW_NOTCH = "show_notch"
 
 // slideshow
 const val SLIDESHOW_INTERVAL = "slideshow_interval"
-const val SLIDESHOW_INCLUDE_PHOTOS = "slideshow_include_photos"
 const val SLIDESHOW_INCLUDE_VIDEOS = "slideshow_include_videos"
 const val SLIDESHOW_INCLUDE_GIFS = "slideshow_include_gifs"
 const val SLIDESHOW_RANDOM_ORDER = "slideshow_random_order"
@@ -73,17 +89,26 @@ const val SLIDESHOW_MOVE_BACKWARDS = "slideshow_move_backwards"
 const val SLIDESHOW_LOOP = "loop_slideshow"
 const val SLIDESHOW_DEFAULT_INTERVAL = 5
 const val SLIDESHOW_SCROLL_DURATION = 500L
+const val SLIDESHOW_START_ON_ENTER = "slideshow_start_on_enter"
 
 const val NOMEDIA = ".nomedia"
 const val FAVORITES = "favorites"
 const val RECYCLE_BIN = "recycle_bin"
 const val SHOW_FAVORITES = "show_favorites"
 const val SHOW_RECYCLE_BIN = "show_recycle_bin"
+const val SHOW_NEXT_ITEM = "show_next_item"
+const val SHOW_PREV_ITEM = "show_prev_item"
+const val GO_TO_NEXT_ITEM = "go_to_next_item"
+const val GO_TO_PREV_ITEM = "go_to_prev_item"
 const val MAX_COLUMN_COUNT = 20
 const val SHOW_TEMP_HIDDEN_DURATION = 300000L
 const val CLICK_MAX_DURATION = 150
+const val CLICK_MAX_DISTANCE = 100
+const val MAX_CLOSE_DOWN_GESTURE_DURATION = 300
 const val DRAG_THRESHOLD = 8
 const val MONTH_MILLISECONDS = MONTH_SECONDS * 1000L
+const val MIN_SKIP_LENGTH = 2000
+const val HIDE_SYSTEM_UI_DELAY = 500L
 
 const val DIRECTORY = "directory"
 const val MEDIUM = "medium"
@@ -149,5 +174,20 @@ const val BOTTOM_ACTION_SHOW_ON_MAP = 256
 const val BOTTOM_ACTION_TOGGLE_VISIBILITY = 512
 const val BOTTOM_ACTION_RENAME = 1024
 const val BOTTOM_ACTION_SET_AS = 2048
+const val BOTTOM_ACTION_COPY = 4096
 
 const val DEFAULT_BOTTOM_ACTIONS = BOTTOM_ACTION_TOGGLE_FAVORITE or BOTTOM_ACTION_EDIT or BOTTOM_ACTION_SHARE or BOTTOM_ACTION_DELETE
+
+// aspect ratios used at the editor for cropping
+const val ASPECT_RATIO_FREE = 0
+const val ASPECT_RATIO_ONE_ONE = 1
+const val ASPECT_RATIO_FOUR_THREE = 2
+const val ASPECT_RATIO_SIXTEEN_NINE = 3
+const val ASPECT_RATIO_OTHER = 4
+
+// some constants related to zooming videos
+const val MIN_VIDEO_ZOOM_SCALE = 1f
+const val MAX_VIDEO_ZOOM_SCALE = 5f
+const val ZOOM_MODE_NONE = 0
+const val ZOOM_MODE_DRAG = 1
+const val ZOOM_MODE_ZOOM = 2

app/src/main/kotlin/com/simplemobiletools/gallery/pro/helpers/FilterThumbnailsManager.kt

@@ -1,7 +1,7 @@
-package com.simplemobiletools.gallery.helpers
+package com.simplemobiletools.gallery.pro.helpers
 
 import android.graphics.Bitmap
-import com.simplemobiletools.gallery.models.FilterItem
+import com.simplemobiletools.gallery.pro.models.FilterItem
 import java.util.*
 
 class FilterThumbnailsManager {

app/src/main/kotlin/com/simplemobiletools/gallery/pro/helpers/GlideRotateTransformation.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.helpers
+package com.simplemobiletools.gallery.pro.helpers
 
 import android.graphics.Bitmap
 import android.graphics.Matrix
@@ -8,8 +8,9 @@ import java.security.MessageDigest
 
 class GlideRotateTransformation(val rotateRotationAngle: Int) : BitmapTransformation() {
     override fun transform(pool: BitmapPool, bitmap: Bitmap, outWidth: Int, outHeight: Int): Bitmap {
-        if (rotateRotationAngle % 360 == 0)
+        if (rotateRotationAngle % 360 == 0) {
             return bitmap
+        }
 
         val matrix = Matrix()
         matrix.postRotate(rotateRotationAngle.toFloat())

app/src/main/kotlin/com/simplemobiletools/gallery/pro/helpers/IsoTypeReader.kt

@@ -0,0 +1,27 @@
+package com.simplemobiletools.gallery.pro.helpers
+
+import java.io.UnsupportedEncodingException
+import java.nio.ByteBuffer
+import java.nio.charset.Charset
+
+// file taken from the https://github.com/sannies/mp4parser project, used at determining if a video is a panoramic one
+object IsoTypeReader {
+    fun readUInt32(bb: ByteBuffer): Long {
+        var i = bb.int.toLong()
+        if (i < 0) {
+            i += 1L shl 32
+        }
+        return i
+    }
+
+    fun read4cc(bb: ByteBuffer): String? {
+        val codeBytes = ByteArray(4)
+        bb.get(codeBytes)
+
+        return try {
+            String(codeBytes, Charset.forName("ISO-8859-1"))
+        } catch (e: UnsupportedEncodingException) {
+            null
+        }
+    }
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/helpers/MediaFetcher.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.helpers
+package com.simplemobiletools.gallery.pro.helpers
 
 import android.content.Context
 import android.database.Cursor
@@ -7,33 +7,39 @@ import android.provider.MediaStore
 import android.text.format.DateFormat
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.*
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.extensions.*
+import com.simplemobiletools.gallery.pro.extensions.*
-import com.simplemobiletools.gallery.models.Medium
+import com.simplemobiletools.gallery.pro.models.Medium
-import com.simplemobiletools.gallery.models.ThumbnailItem
+import com.simplemobiletools.gallery.pro.models.ThumbnailItem
-import com.simplemobiletools.gallery.models.ThumbnailSection
+import com.simplemobiletools.gallery.pro.models.ThumbnailSection
 import java.io.File
 import java.util.*
 
 class MediaFetcher(val context: Context) {
     var shouldStop = false
 
-    fun getFilesFrom(curPath: String, isPickImage: Boolean, isPickVideo: Boolean, getProperDateTaken: Boolean, favoritePaths: ArrayList<String>): ArrayList<Medium> {
+    fun getFilesFrom(curPath: String, isPickImage: Boolean, isPickVideo: Boolean, getProperDateTaken: Boolean, favoritePaths: ArrayList<String>,
+                     getVideoDurations: Boolean, sortMedia: Boolean = true): ArrayList<Medium> {
         val filterMedia = context.config.filterMedia
         if (filterMedia == 0) {
             return ArrayList()
         }
 
         val curMedia = ArrayList<Medium>()
-        if (curPath.startsWith(OTG_PATH)) {
+        if (curPath.startsWith(OTG_PATH, true)) {
-            val newMedia = getMediaOnOTG(curPath, isPickImage, isPickVideo, filterMedia, favoritePaths)
+            if (context.hasOTGConnected()) {
+                val newMedia = getMediaOnOTG(curPath, isPickImage, isPickVideo, filterMedia, favoritePaths, getVideoDurations)
                 curMedia.addAll(newMedia)
+            }
         } else {
-            val newMedia = getMediaInFolder(curPath, isPickImage, isPickVideo, filterMedia, getProperDateTaken, favoritePaths)
+            val newMedia = getMediaInFolder(curPath, isPickImage, isPickVideo, filterMedia, getProperDateTaken, favoritePaths, getVideoDurations)
             curMedia.addAll(newMedia)
         }
 
+        if (sortMedia) {
             sortMedia(curMedia, context.config.getFileSorting(curPath))
+        }
+
         return curMedia
     }
 
@@ -122,7 +128,7 @@ class MediaFetcher(val context: Context) {
         val foldersToIgnore = arrayListOf("/storage/emulated/legacy")
         val config = context.config
         val includedFolders = config.includedFolders
-        var foldersToScan = config.everShownFolders.toMutableList() as ArrayList
+        var foldersToScan = config.everShownFolders.filter { it == FAVORITES || it == RECYCLE_BIN || context.getDoesFilePathExist(it) }.toMutableList() as ArrayList
 
         cursor.use {
             if (cursor.moveToFirst()) {
@@ -167,7 +173,7 @@ class MediaFetcher(val context: Context) {
     }
 
     private fun getMediaInFolder(folder: String, isPickImage: Boolean, isPickVideo: Boolean, filterMedia: Int, getProperDateTaken: Boolean,
-                                 favoritePaths: ArrayList<String>): ArrayList<Medium> {
+                                 favoritePaths: ArrayList<String>, getVideoDurations: Boolean): ArrayList<Medium> {
         val media = ArrayList<Medium>()
 
         val deletedMedia = if (folder == RECYCLE_BIN) {
@@ -176,27 +182,27 @@ class MediaFetcher(val context: Context) {
             ArrayList()
         }
 
+        val doExtraCheck = context.config.doExtraCheck
+        val showHidden = context.config.shouldShowHidden
+        val dateTakens = if (getProperDateTaken && folder != FAVORITES && folder != RECYCLE_BIN) getFolderDateTakens(folder) else HashMap()
+
         val files = when (folder) {
-            FAVORITES -> favoritePaths.map { File(it) }.toTypedArray()
+            FAVORITES -> favoritePaths.filter { showHidden || !it.contains("/.") }.map { File(it) }.toTypedArray()
             RECYCLE_BIN -> deletedMedia.map { File(it.path) }.toTypedArray()
             else -> File(folder).listFiles() ?: return media
         }
 
-        val doExtraCheck = context.config.doExtraCheck
-        val showHidden = context.config.shouldShowHidden
-        val dateTakens = if (getProperDateTaken) getFolderDateTakens(folder) else HashMap()
-
         for (file in files) {
             if (shouldStop) {
                 break
             }
 
-            val filename = file.name
+            val path = file.absolutePath
-            val isImage = filename.isImageFast()
+            val isImage = path.isImageFast()
-            val isVideo = if (isImage) false else filename.isVideoFast()
+            val isVideo = if (isImage) false else path.isVideoFast()
-            val isGif = if (isImage || isVideo) false else filename.isGif()
+            val isGif = if (isImage || isVideo) false else path.isGif()
-            val isRaw = if (isImage || isVideo || isGif) false else filename.isRawFast()
+            val isRaw = if (isImage || isVideo || isGif) false else path.isRawFast()
-            val isSvg = if (isImage || isVideo || isGif || isRaw) false else filename.isSvg()
+            val isSvg = if (isImage || isVideo || isGif || isRaw) false else path.isSvg()
 
             if (!isImage && !isVideo && !isGif && !isRaw && !isSvg)
                 continue
@@ -216,6 +222,7 @@ class MediaFetcher(val context: Context) {
             if (isSvg && filterMedia and TYPE_SVGS == 0)
                 continue
 
+            val filename = file.name
             if (!showHidden && filename.startsWith('.'))
                 continue
 
@@ -223,7 +230,6 @@ class MediaFetcher(val context: Context) {
             if (size <= 0L || (doExtraCheck && !file.exists()))
                 continue
 
-            val path = file.absolutePath
             if (folder == RECYCLE_BIN) {
                 deletedMedia.firstOrNull { it.path == path }?.apply {
                     media.add(this)
@@ -231,6 +237,7 @@ class MediaFetcher(val context: Context) {
             } else {
                 val lastModified = file.lastModified()
                 var dateTaken = lastModified
+                val videoDuration = if (getVideoDurations && isVideo) path.getVideoDuration() else 0
 
                 if (getProperDateTaken) {
                     dateTaken = dateTakens.remove(filename) ?: lastModified
@@ -245,14 +252,15 @@ class MediaFetcher(val context: Context) {
                 }
 
                 val isFavorite = favoritePaths.contains(path)
-                val medium = Medium(null, filename, path, file.parent, lastModified, dateTaken, size, type, isFavorite, 0L)
+                val medium = Medium(null, filename, path, file.parent, lastModified, dateTaken, size, type, videoDuration, isFavorite, 0L)
                 media.add(medium)
             }
         }
         return media
     }
 
-    private fun getMediaOnOTG(folder: String, isPickImage: Boolean, isPickVideo: Boolean, filterMedia: Int, favoritePaths: ArrayList<String>): ArrayList<Medium> {
+    private fun getMediaOnOTG(folder: String, isPickImage: Boolean, isPickVideo: Boolean, filterMedia: Int, favoritePaths: ArrayList<String>,
+                              getVideoDurations: Boolean): ArrayList<Medium> {
         val media = ArrayList<Medium>()
         val files = context.getDocumentFile(folder)?.listFiles() ?: return media
         val doExtraCheck = context.config.doExtraCheck
@@ -307,8 +315,9 @@ class MediaFetcher(val context: Context) {
             }
 
             val path = Uri.decode(file.uri.toString().replaceFirst("${context.config.OTGTreeUri}/document/${context.config.OTGPartition}%3A", OTG_PATH))
+            val videoDuration = if (getVideoDurations) path.getVideoDuration() else 0
             val isFavorite = favoritePaths.contains(path)
-            val medium = Medium(null, filename, path, folder, dateModified, dateTaken, size, type, isFavorite, 0L)
+            val medium = Medium(null, filename, path, folder, dateModified, dateTaken, size, type, videoDuration, isFavorite, 0L)
             media.add(medium)
         }
 
@@ -344,6 +353,11 @@ class MediaFetcher(val context: Context) {
     }
 
     fun sortMedia(media: ArrayList<Medium>, sorting: Int) {
+        if (sorting and SORT_BY_RANDOM != 0) {
+            media.shuffle()
+            return
+        }
+
         media.sortWith(Comparator { o1, o2 ->
             o1 as Medium
             o2 as Medium

app/src/main/kotlin/com/simplemobiletools/gallery/pro/helpers/MyWidgetProvider.kt

@@ -0,0 +1,85 @@
+package com.simplemobiletools.gallery.pro.helpers
+
+import android.app.PendingIntent
+import android.appwidget.AppWidgetManager
+import android.appwidget.AppWidgetProvider
+import android.content.Context
+import android.content.Intent
+import android.os.Bundle
+import android.widget.RemoteViews
+import com.bumptech.glide.Glide
+import com.bumptech.glide.load.engine.DiskCacheStrategy
+import com.bumptech.glide.request.RequestOptions
+import com.simplemobiletools.commons.extensions.setBackgroundColor
+import com.simplemobiletools.commons.extensions.setText
+import com.simplemobiletools.commons.extensions.setVisibleIf
+import com.simplemobiletools.gallery.pro.R
+import com.simplemobiletools.gallery.pro.activities.MediaActivity
+import com.simplemobiletools.gallery.pro.extensions.*
+import com.simplemobiletools.gallery.pro.models.Widget
+
+class MyWidgetProvider : AppWidgetProvider() {
+    private fun setupAppOpenIntent(context: Context, views: RemoteViews, id: Int, widget: Widget) {
+        val intent = Intent(context, MediaActivity::class.java).apply {
+            putExtra(DIRECTORY, widget.folderPath)
+        }
+
+        val pendingIntent = PendingIntent.getActivity(context, widget.widgetId, intent, PendingIntent.FLAG_UPDATE_CURRENT)
+        views.setOnClickPendingIntent(id, pendingIntent)
+    }
+
+    override fun onUpdate(context: Context, appWidgetManager: AppWidgetManager, appWidgetIds: IntArray) {
+        super.onUpdate(context, appWidgetManager, appWidgetIds)
+        Thread {
+            val config = context.config
+            context.widgetsDB.getWidgets().filter { appWidgetIds.contains(it.widgetId) }.forEach {
+                val views = RemoteViews(context.packageName, R.layout.widget).apply {
+                    setBackgroundColor(R.id.widget_holder, config.widgetBgColor)
+                    setVisibleIf(R.id.widget_folder_name, config.showWidgetFolderName)
+                    setTextColor(R.id.widget_folder_name, config.widgetTextColor)
+                    setText(R.id.widget_folder_name, context.getFolderNameFromPath(it.folderPath))
+                }
+
+                val path = context.directoryDB.getDirectoryThumbnail(it.folderPath) ?: return@forEach
+                val options = RequestOptions()
+                        .signature(path.getFileSignature())
+                        .diskCacheStrategy(DiskCacheStrategy.RESOURCE)
+                if (context.config.cropThumbnails) options.centerCrop() else options.fitCenter()
+
+                val density = context.resources.displayMetrics.density
+                val appWidgetOptions = appWidgetManager.getAppWidgetOptions(appWidgetIds.first())
+                val width = appWidgetOptions.getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH)
+                val height = appWidgetOptions.getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT)
+
+                val widgetSize = (Math.max(width, height) * density).toInt()
+                try {
+                    val image = Glide.with(context)
+                            .asBitmap()
+                            .load(path)
+                            .apply(options)
+                            .submit(widgetSize, widgetSize)
+                            .get()
+                    views.setImageViewBitmap(R.id.widget_imageview, image)
+                } catch (e: Exception) {
+                }
+
+                setupAppOpenIntent(context, views, R.id.widget_holder, it)
+                appWidgetManager.updateAppWidget(it.widgetId, views)
+            }
+        }.start()
+    }
+
+    override fun onAppWidgetOptionsChanged(context: Context, appWidgetManager: AppWidgetManager, appWidgetId: Int, newOptions: Bundle) {
+        super.onAppWidgetOptionsChanged(context, appWidgetManager, appWidgetId, newOptions)
+        onUpdate(context, appWidgetManager, intArrayOf(appWidgetId))
+    }
+
+    override fun onDeleted(context: Context, appWidgetIds: IntArray) {
+        super.onDeleted(context, appWidgetIds)
+        Thread {
+            appWidgetIds.forEach {
+                context.widgetsDB.deleteWidgetId(it)
+            }
+        }.start()
+    }
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/helpers/PicassoDecoder.kt

@@ -1,9 +1,9 @@
-package com.simplemobiletools.gallery.helpers
+package com.simplemobiletools.gallery.pro.helpers
 
 import android.content.Context
 import android.graphics.Bitmap
 import android.net.Uri
-import com.davemorrissey.labs.subscaleview.decoder.ImageDecoder
+import com.davemorrissey.labs.subscaleview.ImageDecoder
 import com.squareup.picasso.MemoryPolicy
 import com.squareup.picasso.Picasso
 

app/src/main/kotlin/com/simplemobiletools/gallery/pro/helpers/PicassoRegionDecoder.kt

@@ -1,16 +1,17 @@
-package com.simplemobiletools.gallery.helpers
+package com.simplemobiletools.gallery.pro.helpers
 
 import android.content.Context
 import android.graphics.*
 import android.net.Uri
-import com.davemorrissey.labs.subscaleview.decoder.ImageRegionDecoder
+import com.davemorrissey.labs.subscaleview.ImageRegionDecoder
 
 class PicassoRegionDecoder : ImageRegionDecoder {
     private var decoder: BitmapRegionDecoder? = null
     private val decoderLock = Any()
 
     override fun init(context: Context, uri: Uri): Point {
-        val inputStream = context.contentResolver.openInputStream(uri)
+        val newUri = Uri.parse(uri.toString().replace("%", "%25").replace("#", "%23"))
+        val inputStream = context.contentResolver.openInputStream(newUri)
         decoder = BitmapRegionDecoder.newInstance(inputStream, false)
         return Point(decoder!!.width, decoder!!.height)
     }

app/src/main/kotlin/com/simplemobiletools/gallery/pro/interfaces/DirectoryDao.kt

@@ -1,11 +1,11 @@
-package com.simplemobiletools.gallery.interfaces
+package com.simplemobiletools.gallery.pro.interfaces
 
-import android.arch.persistence.room.Dao
+import androidx.room.Dao
-import android.arch.persistence.room.Insert
+import androidx.room.Insert
-import android.arch.persistence.room.OnConflictStrategy.REPLACE
+import androidx.room.OnConflictStrategy.REPLACE
-import android.arch.persistence.room.Query
+import androidx.room.Query
-import com.simplemobiletools.gallery.helpers.RECYCLE_BIN
+import com.simplemobiletools.gallery.pro.helpers.RECYCLE_BIN
-import com.simplemobiletools.gallery.models.Directory
+import com.simplemobiletools.gallery.pro.models.Directory
 
 @Dao
 interface DirectoryDao {
@@ -29,4 +29,7 @@ interface DirectoryDao {
 
     @Query("DELETE FROM directories WHERE path = \'$RECYCLE_BIN\' COLLATE NOCASE")
     fun deleteRecycleBin()
+
+    @Query("SELECT thumbnail FROM directories WHERE path = :path")
+    fun getDirectoryThumbnail(path: String): String?
 }

app/src/main/kotlin/com/simplemobiletools/gallery/pro/interfaces/DirectoryOperationsListener.kt

@@ -1,6 +1,6 @@
-package com.simplemobiletools.gallery.interfaces
+package com.simplemobiletools.gallery.pro.interfaces
 
-import com.simplemobiletools.gallery.models.Directory
+import com.simplemobiletools.gallery.pro.models.Directory
 import java.io.File
 
 interface DirectoryOperationsListener {

app/src/main/kotlin/com/simplemobiletools/gallery/pro/interfaces/MediaOperationsListener.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.interfaces
+package com.simplemobiletools.gallery.pro.interfaces
 
 import com.simplemobiletools.commons.models.FileDirItem
 

app/src/main/kotlin/com/simplemobiletools/gallery/pro/interfaces/MediumDao.kt

@@ -1,24 +1,24 @@
-package com.simplemobiletools.gallery.interfaces
+package com.simplemobiletools.gallery.pro.interfaces
 
-import android.arch.persistence.room.Dao
+import androidx.room.Dao
-import android.arch.persistence.room.Delete
+import androidx.room.Delete
-import android.arch.persistence.room.Insert
+import androidx.room.Insert
-import android.arch.persistence.room.OnConflictStrategy.REPLACE
+import androidx.room.OnConflictStrategy.REPLACE
-import android.arch.persistence.room.Query
+import androidx.room.Query
-import com.simplemobiletools.gallery.models.Medium
+import com.simplemobiletools.gallery.pro.models.Medium
 
 @Dao
 interface MediumDao {
-    @Query("SELECT filename, full_path, parent_path, last_modified, date_taken, size, type, is_favorite, deleted_ts FROM media WHERE deleted_ts = 0 AND parent_path = :path COLLATE NOCASE")
+    @Query("SELECT filename, full_path, parent_path, last_modified, date_taken, size, type, video_duration, is_favorite, deleted_ts FROM media WHERE deleted_ts = 0 AND parent_path = :path COLLATE NOCASE")
     fun getMediaFromPath(path: String): List<Medium>
 
-    @Query("SELECT filename, full_path, parent_path, last_modified, date_taken, size, type, is_favorite, deleted_ts FROM media WHERE deleted_ts = 0 AND is_favorite = 1")
+    @Query("SELECT filename, full_path, parent_path, last_modified, date_taken, size, type, video_duration, is_favorite, deleted_ts FROM media WHERE deleted_ts = 0 AND is_favorite = 1")
     fun getFavorites(): List<Medium>
 
     @Query("SELECT full_path FROM media WHERE deleted_ts = 0 AND is_favorite = 1")
     fun getFavoritePaths(): List<String>
 
-    @Query("SELECT filename, full_path, parent_path, last_modified, date_taken, size, type, is_favorite, deleted_ts FROM media WHERE deleted_ts != 0")
+    @Query("SELECT filename, full_path, parent_path, last_modified, date_taken, size, type, video_duration, is_favorite, deleted_ts FROM media WHERE deleted_ts != 0")
     fun getDeletedMedia(): List<Medium>
 
     @Insert(onConflict = REPLACE)
@@ -33,7 +33,7 @@ interface MediumDao {
     @Query("DELETE FROM media WHERE full_path = :path COLLATE NOCASE")
     fun deleteMediumPath(path: String)
 
-    @Query("DELETE FROM media WHERE deleted_ts < :timestmap")
+    @Query("DELETE FROM media WHERE deleted_ts < :timestmap AND deleted_ts != 0")
     fun deleteOldRecycleBinItems(timestmap: Long)
 
     @Query("UPDATE OR REPLACE media SET filename = :newFilename, full_path = :newFullPath, parent_path = :newParentPath WHERE full_path = :oldPath COLLATE NOCASE")
@@ -42,8 +42,8 @@ interface MediumDao {
     @Query("UPDATE media SET is_favorite = :isFavorite WHERE full_path = :path COLLATE NOCASE")
     fun updateFavorite(path: String, isFavorite: Boolean)
 
-    @Query("UPDATE media SET deleted_ts = :deletedTS WHERE full_path = :path COLLATE NOCASE")
+    @Query("UPDATE OR REPLACE media SET full_path = :newPath, deleted_ts = :deletedTS WHERE full_path = :oldPath COLLATE NOCASE")
-    fun updateDeleted(path: String, deletedTS: Long)
+    fun updateDeleted(newPath: String, deletedTS: Long, oldPath: String)
 
     @Query("UPDATE media SET date_taken = :dateTaken WHERE full_path = :path COLLATE NOCASE")
     fun updateFavoriteDateTaken(path: String, dateTaken: Long)

app/src/main/kotlin/com/simplemobiletools/gallery/pro/interfaces/WidgetsDao.kt

@@ -0,0 +1,19 @@
+package com.simplemobiletools.gallery.pro.interfaces
+
+import androidx.room.Dao
+import androidx.room.Insert
+import androidx.room.OnConflictStrategy
+import androidx.room.Query
+import com.simplemobiletools.gallery.pro.models.Widget
+
+@Dao
+interface WidgetsDao {
+    @Query("SELECT * FROM widgets")
+    fun getWidgets(): List<Widget>
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    fun insertOrUpdate(widget: Widget): Long
+
+    @Query("DELETE FROM widgets WHERE widget_id = :widgetId")
+    fun deleteWidgetId(widgetId: Int)
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/models/AlbumCover.kt

@@ -1,3 +1,3 @@
-package com.simplemobiletools.gallery.models
+package com.simplemobiletools.gallery.pro.models
 
 data class AlbumCover(val path: String, val tmb: String)

app/src/main/kotlin/com/simplemobiletools/gallery/pro/models/Directory.kt

@@ -1,20 +1,16 @@
-package com.simplemobiletools.gallery.models
+package com.simplemobiletools.gallery.pro.models
 
-import android.arch.persistence.room.ColumnInfo
+import androidx.room.*
-import android.arch.persistence.room.Entity
-import android.arch.persistence.room.Index
-import android.arch.persistence.room.PrimaryKey
 import com.simplemobiletools.commons.extensions.formatDate
 import com.simplemobiletools.commons.extensions.formatSize
 import com.simplemobiletools.commons.helpers.SORT_BY_DATE_MODIFIED
 import com.simplemobiletools.commons.helpers.SORT_BY_NAME
 import com.simplemobiletools.commons.helpers.SORT_BY_PATH
 import com.simplemobiletools.commons.helpers.SORT_BY_SIZE
-import com.simplemobiletools.gallery.helpers.FAVORITES
+import com.simplemobiletools.gallery.pro.helpers.FAVORITES
-import com.simplemobiletools.gallery.helpers.RECYCLE_BIN
+import com.simplemobiletools.gallery.pro.helpers.RECYCLE_BIN
-import java.io.Serializable
 
-@Entity(tableName = "directories", indices = [Index(value = "path", unique = true)])
+@Entity(tableName = "directories", indices = [Index(value = ["path"], unique = true)])
 data class Directory(
         @PrimaryKey(autoGenerate = true) var id: Long?,
         @ColumnInfo(name = "path") var path: String,
@@ -24,12 +20,14 @@ data class Directory(
         @ColumnInfo(name = "last_modified") var modified: Long,
         @ColumnInfo(name = "date_taken") var taken: Long,
         @ColumnInfo(name = "size") var size: Long,
-        @ColumnInfo(name = "location") val location: Int,
+        @ColumnInfo(name = "location") var location: Int,
-        @ColumnInfo(name = "media_types") var types: Int) : Serializable {
+        @ColumnInfo(name = "media_types") var types: Int,
 
-    companion object {
+        // used with "Group direct subfolders" enabled
-        private const val serialVersionUID = -6553345863555455L
+        @Ignore var subfoldersCount: Int = 0,
-    }
+        @Ignore var subfoldersMediaCount: Int = 0) {
+
+    constructor() : this(null, "", "", "", 0, 0L, 0L, 0L, 0, 0, 0, 0)
 
     fun getBubbleText(sorting: Int) = when {
         sorting and SORT_BY_NAME != 0 -> name

app/src/main/kotlin/com/simplemobiletools/gallery/pro/models/FilterItem.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.models
+package com.simplemobiletools.gallery.pro.models
 
 import android.graphics.Bitmap
 import com.zomato.photofilters.imageprocessors.Filter

app/src/main/kotlin/com/simplemobiletools/gallery/pro/models/Medium.kt

@@ -1,9 +1,9 @@
-package com.simplemobiletools.gallery.models
+package com.simplemobiletools.gallery.pro.models
 
-import android.arch.persistence.room.ColumnInfo
+import androidx.room.ColumnInfo
-import android.arch.persistence.room.Entity
+import androidx.room.Entity
-import android.arch.persistence.room.Index
+import androidx.room.Index
-import android.arch.persistence.room.PrimaryKey
+import androidx.room.PrimaryKey
 import com.simplemobiletools.commons.extensions.formatDate
 import com.simplemobiletools.commons.extensions.formatSize
 import com.simplemobiletools.commons.extensions.getFilenameExtension
@@ -11,11 +11,11 @@ import com.simplemobiletools.commons.helpers.SORT_BY_DATE_MODIFIED
 import com.simplemobiletools.commons.helpers.SORT_BY_NAME
 import com.simplemobiletools.commons.helpers.SORT_BY_PATH
 import com.simplemobiletools.commons.helpers.SORT_BY_SIZE
-import com.simplemobiletools.gallery.helpers.*
+import com.simplemobiletools.gallery.pro.helpers.*
 import java.io.Serializable
 import java.util.*
 
-@Entity(tableName = "media", indices = [(Index(value = "full_path", unique = true))])
+@Entity(tableName = "media", indices = [(Index(value = ["full_path"], unique = true))])
 data class Medium(
         @PrimaryKey(autoGenerate = true) var id: Long?,
         @ColumnInfo(name = "filename") var name: String,
@@ -25,6 +25,7 @@ data class Medium(
         @ColumnInfo(name = "date_taken") var taken: Long,
         @ColumnInfo(name = "size") val size: Long,
         @ColumnInfo(name = "type") val type: Int,
+        @ColumnInfo(name = "video_duration") val videoDuration: Int,
         @ColumnInfo(name = "is_favorite") var isFavorite: Boolean,
         @ColumnInfo(name = "deleted_ts") var deletedTS: Long) : Serializable, ThumbnailItem() {
 

app/src/main/kotlin/com/simplemobiletools/gallery/pro/models/PaintOptions.kt

@@ -0,0 +1,5 @@
+package com.simplemobiletools.gallery.pro.models
+
+import android.graphics.Color
+
+data class PaintOptions(var color: Int = Color.BLACK, var strokeWidth: Float = 5f)

app/src/main/kotlin/com/simplemobiletools/gallery/pro/models/ThumbnailItem.kt

@@ -0,0 +1,3 @@
+package com.simplemobiletools.gallery.pro.models
+
+open class ThumbnailItem

app/src/main/kotlin/com/simplemobiletools/gallery/pro/models/ThumbnailSection.kt

@@ -1,3 +1,3 @@
-package com.simplemobiletools.gallery.models
+package com.simplemobiletools.gallery.pro.models
 
 data class ThumbnailSection(val title: String) : ThumbnailItem()

app/src/main/kotlin/com/simplemobiletools/gallery/pro/models/Widget.kt

@@ -0,0 +1,12 @@
+package com.simplemobiletools.gallery.pro.models
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.Index
+import androidx.room.PrimaryKey
+
+@Entity(tableName = "widgets", indices = [(Index(value = ["widget_id"], unique = true))])
+data class Widget(
+        @PrimaryKey(autoGenerate = true) var id: Int?,
+        @ColumnInfo(name = "widget_id") var widgetId: Int,
+        @ColumnInfo(name = "folder_path") var folderPath: String)

app/src/main/kotlin/com/simplemobiletools/gallery/pro/receivers/RefreshMediaReceiver.kt

@@ -1,13 +1,13 @@
-package com.simplemobiletools.gallery.receivers
+package com.simplemobiletools.gallery.pro.receivers
 
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.REFRESH_PATH
-import com.simplemobiletools.gallery.extensions.galleryDB
+import com.simplemobiletools.gallery.pro.extensions.galleryDB
-import com.simplemobiletools.gallery.helpers.*
+import com.simplemobiletools.gallery.pro.helpers.*
-import com.simplemobiletools.gallery.models.Medium
+import com.simplemobiletools.gallery.pro.models.Medium
 import java.io.File
 
 class RefreshMediaReceiver : BroadcastReceiver() {
@@ -16,7 +16,7 @@ class RefreshMediaReceiver : BroadcastReceiver() {
 
         Thread {
             val medium = Medium(null, path.getFilenameFromPath(), path, path.getParentPath(), System.currentTimeMillis(), System.currentTimeMillis(),
-                    File(path).length(), getFileType(path), false, 0L)
+                    File(path).length(), getFileType(path), 0, false, 0L)
             context.galleryDB.MediumDao().insert(medium)
         }.start()
     }

app/src/main/kotlin/com/simplemobiletools/gallery/pro/svg/SvgDecoder.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.svg
+package com.simplemobiletools.gallery.pro.svg
 
 import com.bumptech.glide.load.Options
 import com.bumptech.glide.load.ResourceDecoder

app/src/main/kotlin/com/simplemobiletools/gallery/pro/svg/SvgDrawableTranscoder.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.svg
+package com.simplemobiletools.gallery.pro.svg
 
 import android.graphics.drawable.PictureDrawable
 import com.bumptech.glide.load.Options

app/src/main/kotlin/com/simplemobiletools/gallery/pro/svg/SvgModule.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.svg
+package com.simplemobiletools.gallery.pro.svg
 
 import android.content.Context
 import android.graphics.drawable.PictureDrawable

app/src/main/kotlin/com/simplemobiletools/gallery/pro/svg/SvgSoftwareLayerSetter.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.svg
+package com.simplemobiletools.gallery.pro.svg
 
 import android.graphics.drawable.PictureDrawable
 import android.widget.ImageView

app/src/main/kotlin/com/simplemobiletools/gallery/pro/views/EditorDrawCanvas.kt

@@ -0,0 +1,147 @@
+package com.simplemobiletools.gallery.pro.views
+
+import android.content.Context
+import android.graphics.*
+import android.util.AttributeSet
+import android.view.MotionEvent
+import android.view.View
+import com.simplemobiletools.gallery.pro.R
+import com.simplemobiletools.gallery.pro.extensions.config
+import com.simplemobiletools.gallery.pro.models.PaintOptions
+import java.util.*
+
+class EditorDrawCanvas(context: Context, attrs: AttributeSet) : View(context, attrs) {
+    private var mCurX = 0f
+    private var mCurY = 0f
+    private var mStartX = 0f
+    private var mStartY = 0f
+    private var mColor = 0
+    private var mWasMultitouch = false
+
+    private var mPaths = LinkedHashMap<Path, PaintOptions>()
+    private var mPaint = Paint()
+    private var mPath = Path()
+    private var mPaintOptions = PaintOptions()
+
+    private var backgroundBitmap: Bitmap? = null
+
+    init {
+        mColor = context.config.primaryColor
+        mPaint.apply {
+            color = mColor
+            style = Paint.Style.STROKE
+            strokeJoin = Paint.Join.ROUND
+            strokeCap = Paint.Cap.ROUND
+            strokeWidth = 40f
+            isAntiAlias = true
+        }
+    }
+
+    override fun onDraw(canvas: Canvas) {
+        super.onDraw(canvas)
+        canvas.save()
+
+        if (backgroundBitmap != null) {
+            canvas.drawBitmap(backgroundBitmap!!, 0f, 0f, null)
+        }
+
+        for ((key, value) in mPaths) {
+            changePaint(value)
+            canvas.drawPath(key, mPaint)
+        }
+
+        changePaint(mPaintOptions)
+        canvas.drawPath(mPath, mPaint)
+        canvas.restore()
+    }
+
+    override fun onTouchEvent(event: MotionEvent): Boolean {
+        val x = event.x
+        val y = event.y
+
+        when (event.action and MotionEvent.ACTION_MASK) {
+            MotionEvent.ACTION_DOWN -> {
+                mWasMultitouch = false
+                mStartX = x
+                mStartY = y
+                actionDown(x, y)
+            }
+            MotionEvent.ACTION_MOVE -> {
+                if (event.pointerCount == 1 && !mWasMultitouch) {
+                    actionMove(x, y)
+                }
+            }
+            MotionEvent.ACTION_UP, MotionEvent.ACTION_CANCEL -> actionUp()
+            MotionEvent.ACTION_POINTER_DOWN -> mWasMultitouch = true
+        }
+
+        invalidate()
+        return true
+    }
+
+    private fun actionDown(x: Float, y: Float) {
+        mPath.reset()
+        mPath.moveTo(x, y)
+        mCurX = x
+        mCurY = y
+    }
+
+    private fun actionMove(x: Float, y: Float) {
+        mPath.quadTo(mCurX, mCurY, (x + mCurX) / 2, (y + mCurY) / 2)
+        mCurX = x
+        mCurY = y
+    }
+
+    private fun actionUp() {
+        if (!mWasMultitouch) {
+            mPath.lineTo(mCurX, mCurY)
+
+            // draw a dot on click
+            if (mStartX == mCurX && mStartY == mCurY) {
+                mPath.lineTo(mCurX, mCurY + 2)
+                mPath.lineTo(mCurX + 1, mCurY + 2)
+                mPath.lineTo(mCurX + 1, mCurY)
+            }
+        }
+
+        mPaths[mPath] = mPaintOptions
+        mPath = Path()
+        mPaintOptions = PaintOptions(mPaintOptions.color, mPaintOptions.strokeWidth)
+    }
+
+    private fun changePaint(paintOptions: PaintOptions) {
+        mPaint.color = paintOptions.color
+        mPaint.strokeWidth = paintOptions.strokeWidth
+    }
+
+    fun updateColor(newColor: Int) {
+        mPaintOptions.color = newColor
+    }
+
+    fun updateBrushSize(newBrushSize: Int) {
+        mPaintOptions.strokeWidth = resources.getDimension(R.dimen.full_brush_size) * (newBrushSize / 100f)
+    }
+
+    fun updateBackgroundBitmap(bitmap: Bitmap) {
+        backgroundBitmap = bitmap
+        invalidate()
+    }
+
+    fun getBitmap(): Bitmap {
+        val bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888)
+        val canvas = Canvas(bitmap)
+        canvas.drawColor(Color.WHITE)
+        draw(canvas)
+        return bitmap
+    }
+
+    fun undo() {
+        if (mPaths.isEmpty()) {
+            return
+        }
+
+        val lastKey = mPaths.keys.lastOrNull()
+        mPaths.remove(lastKey)
+        invalidate()
+    }
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/views/InstantItemSwitch.kt

@@ -1,12 +1,13 @@
-package com.simplemobiletools.gallery.views
+package com.simplemobiletools.gallery.pro.views
 
 import android.content.Context
 import android.util.AttributeSet
 import android.view.MotionEvent
 import android.view.ViewGroup
 import android.widget.RelativeLayout
-import com.simplemobiletools.gallery.helpers.CLICK_MAX_DURATION
+import com.simplemobiletools.gallery.pro.helpers.CLICK_MAX_DISTANCE
-import com.simplemobiletools.gallery.helpers.DRAG_THRESHOLD
+import com.simplemobiletools.gallery.pro.helpers.CLICK_MAX_DURATION
+import com.simplemobiletools.gallery.pro.helpers.DRAG_THRESHOLD
 
 // handle only one finger clicks, pass other events to the parent view and ignore it when received again
 class InstantItemSwitch(context: Context, attrs: AttributeSet) : RelativeLayout(context, attrs) {
@@ -40,7 +41,9 @@ class InstantItemSwitch(context: Context, attrs: AttributeSet) : RelativeLayout(
                 mTouchDownTime = System.currentTimeMillis()
             }
             MotionEvent.ACTION_UP -> {
-                if (System.currentTimeMillis() - mTouchDownTime < CLICK_MAX_DURATION) {
+                val diffX = mTouchDownX - event.x
+                val diffY = mTouchDownY - event.y
+                if (Math.abs(diffX) < CLICK_MAX_DISTANCE && Math.abs(diffY) < CLICK_MAX_DISTANCE && System.currentTimeMillis() - mTouchDownTime < CLICK_MAX_DURATION) {
                     performClick()
                 }
             }

app/src/main/kotlin/com/simplemobiletools/gallery/pro/views/MediaSideScroll.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.helpers
+package com.simplemobiletools.gallery.pro.views
 
 import android.app.Activity
 import android.content.Context
@@ -10,9 +10,12 @@ import android.view.MotionEvent
 import android.view.ViewGroup
 import android.widget.RelativeLayout
 import android.widget.TextView
-import com.simplemobiletools.gallery.R
+import com.simplemobiletools.commons.extensions.onGlobalLayout
-import com.simplemobiletools.gallery.activities.ViewPagerActivity
+import com.simplemobiletools.gallery.pro.R
-import com.simplemobiletools.gallery.extensions.audioManager
+import com.simplemobiletools.gallery.pro.extensions.audioManager
+import com.simplemobiletools.gallery.pro.helpers.CLICK_MAX_DISTANCE
+import com.simplemobiletools.gallery.pro.helpers.CLICK_MAX_DURATION
+import com.simplemobiletools.gallery.pro.helpers.DRAG_THRESHOLD
 
 // allow horizontal swipes through the layout, else it can cause glitches at zoomed in images
 class MediaSideScroll(context: Context, attrs: AttributeSet) : RelativeLayout(context, attrs) {
@@ -23,6 +26,7 @@ class MediaSideScroll(context: Context, attrs: AttributeSet) : RelativeLayout(co
     private var mTouchDownValue = -1
     private var mTempBrightness = 0
     private var mLastTouchY = 0f
+    private var mViewHeight = 0
     private var mIsBrightnessScroll = false
     private var mPassTouches = false
     private var dragThreshold = DRAG_THRESHOLD * context.resources.displayMetrics.density
@@ -30,8 +34,8 @@ class MediaSideScroll(context: Context, attrs: AttributeSet) : RelativeLayout(co
     private var mSlideInfoText = ""
     private var mSlideInfoFadeHandler = Handler()
     private var mParentView: ViewGroup? = null
+    private var activity: Activity? = null
 
-    private lateinit var activity: Activity
     private lateinit var slideInfoView: TextView
     private lateinit var callback: (Float, Float) -> Unit
 
@@ -42,6 +46,9 @@ class MediaSideScroll(context: Context, attrs: AttributeSet) : RelativeLayout(co
         mParentView = parentView
         mIsBrightnessScroll = isBrightness
         mSlideInfoText = activity.getString(if (isBrightness) R.string.brightness else R.string.volume)
+        onGlobalLayout {
+            mViewHeight = height
+        }
     }
 
     override fun dispatchTouchEvent(ev: MotionEvent): Boolean {
@@ -55,7 +62,7 @@ class MediaSideScroll(context: Context, attrs: AttributeSet) : RelativeLayout(co
     }
 
     override fun onTouchEvent(event: MotionEvent): Boolean {
-        if (mPassTouches) {
+        if (mPassTouches && activity == null) {
             return false
         }
 
@@ -78,7 +85,7 @@ class MediaSideScroll(context: Context, attrs: AttributeSet) : RelativeLayout(co
                 val diffY = mTouchDownY - event.y
 
                 if (Math.abs(diffY) > dragThreshold && Math.abs(diffY) > Math.abs(diffX)) {
-                    var percent = ((diffY / ViewPagerActivity.screenHeight) * 100).toInt() * 3
+                    var percent = ((diffY / mViewHeight) * 100).toInt() * 3
                     percent = Math.min(100, Math.max(-100, percent))
 
                     if ((percent == 100 && event.y > mLastTouchY) || (percent == -100 && event.y < mLastTouchY)) {
@@ -100,7 +107,9 @@ class MediaSideScroll(context: Context, attrs: AttributeSet) : RelativeLayout(co
                 mLastTouchY = event.y
             }
             MotionEvent.ACTION_UP -> {
-                if (System.currentTimeMillis() - mTouchDownTime < CLICK_MAX_DURATION) {
+                val diffX = mTouchDownX - event.x
+                val diffY = mTouchDownY - event.y
+                if (Math.abs(diffX) < CLICK_MAX_DISTANCE && Math.abs(diffY) < CLICK_MAX_DISTANCE && System.currentTimeMillis() - mTouchDownTime < CLICK_MAX_DURATION) {
                     callback(event.rawX, event.rawY)
                 }
 
@@ -112,11 +121,11 @@ class MediaSideScroll(context: Context, attrs: AttributeSet) : RelativeLayout(co
         return true
     }
 
-    private fun getCurrentVolume() = activity.audioManager.getStreamVolume(AudioManager.STREAM_MUSIC)
+    private fun getCurrentVolume() = activity!!.audioManager.getStreamVolume(AudioManager.STREAM_MUSIC)
 
     private fun getCurrentBrightness(): Int {
         return try {
-            Settings.System.getInt(activity.contentResolver, Settings.System.SCREEN_BRIGHTNESS)
+            Settings.System.getInt(activity!!.contentResolver, Settings.System.SCREEN_BRIGHTNESS)
         } catch (e: Settings.SettingNotFoundException) {
             70
         }
@@ -132,11 +141,11 @@ class MediaSideScroll(context: Context, attrs: AttributeSet) : RelativeLayout(co
 
     private fun volumePercentChanged(percent: Int) {
         val stream = AudioManager.STREAM_MUSIC
-        val maxVolume = activity.audioManager.getStreamMaxVolume(stream)
+        val maxVolume = activity!!.audioManager.getStreamMaxVolume(stream)
         val percentPerPoint = 100 / maxVolume
         val addPoints = percent / percentPerPoint
         val newVolume = Math.min(maxVolume, Math.max(0, mTouchDownValue + addPoints))
-        activity.audioManager.setStreamVolume(stream, newVolume, 0)
+        activity!!.audioManager.setStreamVolume(stream, newVolume, 0)
 
         val absolutePercent = ((newVolume / maxVolume.toFloat()) * 100).toInt()
         showValue(absolutePercent)
@@ -156,9 +165,9 @@ class MediaSideScroll(context: Context, attrs: AttributeSet) : RelativeLayout(co
         val absolutePercent = ((newBrightness / maxBrightness) * 100).toInt()
         showValue(absolutePercent)
 
-        val attributes = activity.window.attributes
+        val attributes = activity!!.window.attributes
         attributes.screenBrightness = absolutePercent / 100f
-        activity.window.attributes = attributes
+        activity!!.window.attributes = attributes
 
         mSlideInfoFadeHandler.removeCallbacksAndMessages(null)
         mSlideInfoFadeHandler.postDelayed({

app/src/main/kotlin/com/simplemobiletools/gallery/pro/views/MySquareImageView.kt

@@ -1,4 +1,4 @@
-package com.simplemobiletools.gallery.views
+package com.simplemobiletools.gallery.pro.views
 
 import android.content.Context
 import android.util.AttributeSet