Added option to keep screen on while viewing photos (#365)

app/src/main/kotlin/org/fossify/gallery/activities/SettingsActivity.kt

@@ -76,6 +76,7 @@ class SettingsActivity : SimpleActivity() {
         setupAppPasswordProtection()
         setupFileDeletionPasswordProtection()
         setupDeleteEmptyFolders()
+        setupKeepScreenOn()
         setupAllowPhotoGestures()
         setupAllowVideoGestures()
         setupAllowDownGesture()
@@ -446,6 +447,14 @@ class SettingsActivity : SimpleActivity() {
         }
     }
 
+    private fun setupKeepScreenOn() {
+        binding.settingsKeepScreenOnFullscreenPhotos.isChecked = config.keepScreenOn
+        binding.settingsKeepScreenOnFullscreenPhotosHolder.setOnClickListener {
+            binding.settingsKeepScreenOnFullscreenPhotos.toggle()
+            config.keepScreenOn = binding.settingsKeepScreenOnFullscreenPhotos.isChecked
+        }
+    }
+
     private fun setupAllowPhotoGestures() {
         binding.settingsAllowPhotoGestures.isChecked = config.allowPhotoGestures
         binding.settingsAllowPhotoGesturesHolder.setOnClickListener {
@@ -884,6 +893,7 @@ class SettingsActivity : SimpleActivity() {
                 put(BLACK_BACKGROUND, config.blackBackground)
                 put(HIDE_SYSTEM_UI, config.hideSystemUI)
                 put(ALLOW_INSTANT_CHANGE, config.allowInstantChange)
+                put(KEEP_SCREEN_ON, config.keepScreenOn)
                 put(ALLOW_PHOTO_GESTURES, config.allowPhotoGestures)
                 put(ALLOW_DOWN_GESTURE, config.allowDownGesture)
                 put(ALLOW_ROTATING_WITH_GESTURES, config.allowRotatingWithGestures)
@@ -1027,6 +1037,7 @@ class SettingsActivity : SimpleActivity() {
                 BLACK_BACKGROUND -> config.blackBackground = value.toBoolean()
                 HIDE_SYSTEM_UI -> config.hideSystemUI = value.toBoolean()
                 ALLOW_INSTANT_CHANGE -> config.allowInstantChange = value.toBoolean()
+                KEEP_SCREEN_ON -> config.keepScreenOn = value.toBoolean()
                 ALLOW_PHOTO_GESTURES -> config.allowPhotoGestures = value.toBoolean()
                 ALLOW_DOWN_GESTURE -> config.allowDownGesture = value.toBoolean()
                 ALLOW_ROTATING_WITH_GESTURES -> config.allowRotatingWithGestures = value.toBoolean()

app/src/main/kotlin/org/fossify/gallery/fragments/PhotoFragment.kt

@@ -17,6 +17,7 @@ import android.view.LayoutInflater
 import android.view.MotionEvent
 import android.view.View
 import android.view.ViewGroup
+import android.view.WindowManager
 import android.widget.RelativeLayout
 import androidx.exifinterface.media.ExifInterface.*
 import com.alexvasilkov.gestures.GestureController
@@ -220,6 +221,7 @@ class PhotoFragment : ViewPagerFragment() {
 
     override fun onPause() {
         super.onPause()
+        activity?.window?.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
         storeStateVariables()
     }
 
@@ -245,6 +247,7 @@ class PhotoFragment : ViewPagerFragment() {
             mShouldResetImage = false
         }
 
+        val keepScreenOn = config.keepScreenOn
         val allowPhotoGestures = config.allowPhotoGestures
         val allowInstantChange = config.allowInstantChange
 
@@ -254,6 +257,10 @@ class PhotoFragment : ViewPagerFragment() {
             instantNextItem.beVisibleIf(allowInstantChange)
         }
 
+        if (keepScreenOn) {
+            activity?.window?.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+        }
+
         storeStateVariables()
     }
 

app/src/main/kotlin/org/fossify/gallery/helpers/Config.kt

@@ -308,6 +308,10 @@ class Config(context: Context) : BaseConfig(context) {
         get() = prefs.getBoolean(DELETE_EMPTY_FOLDERS, false)
         set(deleteEmptyFolders) = prefs.edit().putBoolean(DELETE_EMPTY_FOLDERS, deleteEmptyFolders).apply()
 
+    var keepScreenOn: Boolean
+        get() = prefs.getBoolean(KEEP_SCREEN_ON, true)
+        set(keepScreenOn) = prefs.edit().putBoolean(KEEP_SCREEN_ON, keepScreenOn).apply()
+
     var allowPhotoGestures: Boolean
         get() = prefs.getBoolean(ALLOW_PHOTO_GESTURES, false)
         set(allowPhotoGestures) = prefs.edit().putBoolean(ALLOW_PHOTO_GESTURES, allowPhotoGestures).apply()

app/src/main/kotlin/org/fossify/gallery/helpers/Constants.kt

@@ -45,6 +45,7 @@ const val INCLUDED_FOLDERS = "included_folders"
 const val ALBUM_COVERS = "album_covers"
 const val HIDE_SYSTEM_UI = "hide_system_ui"
 const val DELETE_EMPTY_FOLDERS = "delete_empty_folders"
+const val KEEP_SCREEN_ON = "keep_screen_on"
 const val ALLOW_PHOTO_GESTURES = "allow_photo_gestures"
 const val ALLOW_VIDEO_GESTURES = "allow_video_gestures"
 const val TEMP_FOLDER_PATH = "temp_folder_path"

app/src/main/res/layout/activity_settings.xml

@@ -491,6 +491,21 @@
 
             </RelativeLayout>
 
+            <RelativeLayout
+                android:id="@+id/settings_keep_screen_on_fullscreen_photos_holder"
+                style="@style/SettingsHolderSwitchStyle"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content">
+
+                <org.fossify.commons.views.MyMaterialSwitch
+                    android:id="@+id/settings_keep_screen_on_fullscreen_photos"
+                    style="@style/SettingsSwitchStyle"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:text="@string/keep_screen_on_fullscreen_photos" />
+
+            </RelativeLayout>
+
             <RelativeLayout
                 android:id="@+id/settings_allow_photo_gestures_holder"
                 style="@style/SettingsHolderSwitchStyle"

app/src/main/res/values-pl/strings.xml

@@ -162,6 +162,7 @@
     <string name="scroll_thumbnails_horizontally">Przewijaj miniaturki w poziomie</string>
     <string name="hide_system_ui_at_fullscreen">Automatycznie ukrywaj interfejs systemu dla multimediów na pełnym ekranie</string>
     <string name="delete_empty_folders">Usuwaj puste foldery po usunięciu ich zawartości</string>
+    <string name="keep_screen_on_fullscreen_photos">Pozostawiaj ekran włączony podczas oglądania obrazów na pełnym ekranie</string>
     <string name="allow_photo_gestures">Zezwalaj na kontrolowanie jasności obrazów pionowymi gestami</string>
     <string name="allow_video_gestures">Zezwalaj na kontrolowanie głośności i jasności wideo pionowymi gestami</string>
     <string name="show_media_count">Pokazuj liczbę multimediów w folderze w widoku głównym</string>

app/src/main/res/values/strings.xml

@@ -180,6 +180,7 @@
     <string name="scroll_thumbnails_horizontally">Scroll thumbnails horizontally</string>
     <string name="hide_system_ui_at_fullscreen">Automatically hide system UI at fullscreen media</string>
     <string name="delete_empty_folders">Delete empty folders after deleting their content</string>
+    <string name="keep_screen_on_fullscreen_photos">Keep the screen on while viewing fullscreen photos</string>
     <string name="allow_photo_gestures">Allow controlling photo brightness with vertical gestures</string>
     <string name="allow_video_gestures">Allow controlling video volume and brightness with vertical gestures</string>
     <string name="playback_speed">Playback speed</string>