Optimizations and fixes of rare situations

- popup after orientation change had incorrect allowed bounds for swiping
- popup could cause a crash after many quick switches to main player and back
- better method of setting fullscreen/non-fullscreen layout using thumbnail view. Also fixed thumbnail height in fullscreen layout
- global settings observer didn't work when a user closed a service manually via notification because it checked for service existing
- app will now exits from fullscreen mode when the user switches players
- playQueuePanel has visibility "gone" by default (not "invisible") because "invisible" can cause problems

app/src/main/java/org/schabi/newpipe/fragments/detail/VideoDetailFragment.java

@@ -1040,6 +1040,9 @@ public class VideoDetailFragment
         boolean useExternalAudioPlayer = PreferenceManager.getDefaultSharedPreferences(activity)
                 .getBoolean(activity.getString(R.string.use_external_audio_player_key), false);
 
+        //  If a user watched video inside fullscreen mode and than chose another player return to non-fullscreen mode
+        if (player != null && player.isInFullscreen()) player.toggleFullscreen();
+
         if (!useExternalAudioPlayer && android.os.Build.VERSION.SDK_INT >= 16) {
             openNormalBackgroundPlayer(append);
         } else {
@@ -1056,6 +1059,9 @@ public class VideoDetailFragment
         // See UI changes while remote playQueue changes
         if (!bounded) startService(false);
 
+        //  If a user watched video inside fullscreen mode and than chose another player return to non-fullscreen mode
+        if (player != null && player.isInFullscreen()) player.toggleFullscreen();
+
         PlayQueue queue = setupPlayQueueForIntent(append);
         if (append) {
             NavigationHelper.enqueueOnPopupPlayer(activity, queue, false);
@@ -1181,17 +1187,7 @@ public class VideoDetailFragment
 
         // Check if viewHolder already contains a child
         if (player.getRootView() != viewHolder) removeVideoPlayerView();
-
-        final int newHeight;
-        if (player.isInFullscreen())
-            newHeight = activity.getWindow().getDecorView().getHeight();
-        else
-            newHeight = FrameLayout.LayoutParams.MATCH_PARENT;
-
-        if (viewHolder.getLayoutParams().height != newHeight) {
-            viewHolder.getLayoutParams().height = newHeight;
-            viewHolder.requestLayout();
-        }
+        setHeightThumbnail();
 
         // Prevent from re-adding a view multiple times
         if (player.getRootView().getParent() == null) viewHolder.addView(player.getRootView());
@@ -1242,9 +1238,15 @@ public class VideoDetailFragment
     private void setHeightThumbnail() {
         final DisplayMetrics metrics = getResources().getDisplayMetrics();
         boolean isPortrait = metrics.heightPixels > metrics.widthPixels;
-        int height = isPortrait
+
+        int height;
+        if (player != null && player.isInFullscreen())
+            height = activity.getWindow().getDecorView().getHeight();
+        else
+            height = isPortrait
                     ? (int) (metrics.widthPixels / (16.0f / 9.0f))
-                : (int) (metrics.heightPixels / 2f);
+                    : (int) (metrics.heightPixels / 2f);;
+
         thumbnailImageView.setLayoutParams(
                 new FrameLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, height));
         thumbnailImageView.setMinimumHeight(height);
@@ -1334,8 +1336,6 @@ public class VideoDetailFragment
 
     @Override
     public void onSettingsChanged() {
-        if (player == null) return;
-
         if(!globalScreenOrientationLocked())
             getActivity().setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
     }

app/src/main/java/org/schabi/newpipe/player/VideoPlayerImpl.java

@@ -1329,7 +1329,7 @@ public class VideoPlayerImpl extends VideoPlayer
     public void updatePopupSize(int width, int height) {
         if (DEBUG) Log.d(TAG, "updatePopupSize() called with: width = [" + width + "], height = [" + height + "]");
 
-        if (popupLayoutParams == null || windowManager == null || !popupPlayerSelected() || getRootView().getParent() == null)
+        if (popupLayoutParams == null || windowManager == null || getParentActivity() != null || getRootView().getParent() == null)
             return;
 
         width = (int) (width > maximumWidth ? maximumWidth : width < minimumWidth ? minimumWidth : width);
@@ -1347,7 +1347,7 @@ public class VideoPlayerImpl extends VideoPlayer
     }
 
     private void updateWindowFlags(final int flags) {
-        if (popupLayoutParams == null || windowManager == null || !popupPlayerSelected() || getRootView().getParent() == null)
+        if (popupLayoutParams == null || windowManager == null || getParentActivity() != null || getRootView().getParent() == null)
             return;
 
         popupLayoutParams.flags = flags;

app/src/main/java/org/schabi/newpipe/player/event/PlayerGestureListener.java

@@ -299,7 +299,8 @@ public class PlayerGestureListener extends GestureDetector.SimpleOnGestureListen
     private boolean onDownInPopup(MotionEvent e) {
         // Fix popup position when the user touch it, it may have the wrong one
         // because the soft input is visible (the draggable area is currently resized).
-        playerImpl.checkPopupPositionBounds(playerImpl.getCloseOverlayView().getWidth(), playerImpl.getCloseOverlayView().getHeight());
+        playerImpl.updateScreenSize();
+        playerImpl.checkPopupPositionBounds();
 
         initialPopupX = playerImpl.getPopupLayoutParams().x;
         initialPopupY = playerImpl.getPopupLayoutParams().y;

app/src/main/res/layout-large-land/activity_main_player.xml

@@ -53,7 +53,7 @@
         android:layout_alignParentEnd="true"
         android:layout_alignParentRight="true"
         android:layout_height="match_parent"
-        android:visibility="invisible"
+        android:visibility="gone"
         android:background="?attr/queue_background_color"
         tools:visibility="visible">
 

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

@@ -51,7 +51,7 @@
         android:id="@+id/playQueuePanel"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:visibility="invisible"
+        android:visibility="gone"
         android:background="?attr/queue_background_color"
         tools:visibility="visible">