adding Notch support + some actionbar/statusbar updates

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

@@ -52,7 +52,7 @@ open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentList
 
     override fun onResume() {
         super.onResume()
-        supportActionBar?.setBackgroundDrawable(resources.getDrawable(R.drawable.actionbar_gradient_background))
+        supportActionBar?.setBackgroundDrawable(resources.getDrawable(R.drawable.gradient_background_flipped))
         if (config.blackBackground) {
             updateStatusbarColor(Color.BLACK)
         }

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

@@ -82,6 +82,13 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_medium)
+
+        top_shadow.layoutParams.height = getStatusBarHeight() + getActionBarHeight()
+        if (isOreoPlus()) {
+            window.attributes.layoutInDisplayCutoutMode = WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES
+            window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS)
+        }
+
         (MediaActivity.mMedia.clone() as ArrayList<ThumbnailItem>).filter { it is Medium }.mapTo(mMediaFiles) { it as Medium }
 
         handlePermission(PERMISSION_WRITE_STORAGE) {
@@ -113,7 +120,6 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         }
 
         initBottomActions()
-        supportActionBar?.setBackgroundDrawable(resources.getDrawable(R.drawable.actionbar_gradient_background))
 
         if (config.maxBrightness) {
             val attributes = window.attributes
@@ -127,6 +133,11 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         if (config.blackBackground) {
             updateStatusbarColor(Color.BLACK)
         }
+
+        supportActionBar?.setBackgroundDrawable(ColorDrawable(Color.TRANSPARENT))
+        if (isLollipopPlus()) {
+            window.statusBarColor = Color.TRANSPARENT
+        }
     }
 
     override fun onPause() {
@@ -247,7 +258,9 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
                 (it as MyPagerAdapter).toggleFullscreen(mIsFullScreen)
                 checkSystemUI()
                 if (!bottom_actions.isGone()) {
-                    bottom_actions.animate().alpha(if (mIsFullScreen) 0f else 1f).start()
+                    val newAlpha = if (mIsFullScreen) 0f else 1f
+                    bottom_actions.animate().alpha(newAlpha).start()
+                    top_shadow.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

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

@@ -278,3 +278,19 @@ fun BaseSimpleActivity.showRecycleBinEmptyingDialog(callback: () -> Unit) {
         callback()
     }
 }
+
+fun BaseSimpleActivity.getStatusBarHeight(): Int {
+    var statusBarHeight = 0
+    val resourceId = resources.getIdentifier("status_bar_height", "dimen", "android")
+    if (resourceId > 0) {
+        statusBarHeight = resources.getDimensionPixelSize(resourceId)
+    }
+    return statusBarHeight
+}
+
+fun BaseSimpleActivity.getActionBarHeight(): Int {
+    val styledAttributes = theme.obtainStyledAttributes(intArrayOf(android.R.attr.actionBarSize))
+    val actionBarHeight = styledAttributes.getDimension(0, 0f)
+    styledAttributes.recycle()
+    return actionBarHeight.toInt()
+}

app/src/main/res/drawable/gradient_background_lighter.xml

@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<shape xmlns:android="http://schemas.android.com/apk/res/android">
-    <gradient
-        android:angle="90"
-        android:endColor="@android:color/transparent"
-        android:startColor="@color/circle_black_background"/>
-</shape>

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

@@ -28,7 +28,7 @@
         android:layout_width="match_parent"
         android:layout_height="@dimen/bottom_editor_actions_shadow_height"
         android:layout_alignParentBottom="true"
-        android:background="@drawable/gradient_background_lighter"/>
+        android:background="@drawable/gradient_background"/>
 
     <include
         android:id="@+id/bottom_aspect_ratios"

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

@@ -14,4 +14,10 @@
         android:id="@+id/bottom_actions"
         layout="@layout/bottom_actions"/>
 
+    <ImageView
+        android:id="@+id/top_shadow"
+        android:layout_width="match_parent"
+        android:layout_height="@dimen/default_status_action_height"
+        android:background="@drawable/gradient_background_flipped"/>
+
 </RelativeLayout>

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

@@ -6,7 +6,7 @@
     android:layout_width="match_parent"
     android:layout_height="@dimen/bottom_actions_height"
     android:layout_alignParentBottom="true"
-    android:background="@drawable/gradient_background_lighter"
+    android:background="@drawable/gradient_background"
     android:paddingTop="@dimen/medium_margin">
 
     <ImageView

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

@@ -6,7 +6,7 @@
     android:layout_width="match_parent"
     android:layout_height="@dimen/bottom_actions_height"
     android:layout_alignParentBottom="true"
-    android:background="@drawable/gradient_background_lighter">
+    android:background="@drawable/gradient_background">
 
     <ImageView
         android:id="@+id/bottom_set_wallpaper_aspect_ratio"

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

@@ -14,4 +14,5 @@
     <dimen name="bottom_filters_thumbnail_size">76dp</dimen>
     <dimen name="bottom_filters_height">90dp</dimen>
     <dimen name="bottom_editor_actions_shadow_height">180dp</dimen>
+    <dimen name="default_status_action_height">86dp</dimen>
 </resources>