Fix status bar background flicker (867b812e) · Commits · e / os / android_frameworks_base

core/java/com/android/internal/policy/DecorView.java

+21 −0

Original line number	Diff line number	Diff line
		@@ -43,6 +43,7 @@ import android.graphics.LinearGradient;
		import android.graphics.Paint;
		import android.graphics.PixelFormat;
		import android.graphics.Rect;
		import android.graphics.Region;
		import android.graphics.Shader;
		import android.graphics.drawable.Drawable;
		import android.os.RemoteException;
		@@ -257,6 +258,26 @@ public class DecorView extends FrameLayout implements RootViewSurfaceTaker, Wind
		setWillNotDraw(getBackground() == null && !mBackgroundFallback.hasFallback());
		}

		@Override
		public boolean gatherTransparentRegion(Region region) {
		boolean statusOpaque = gatherTransparentRegion(mStatusColorViewState, region);
		boolean navOpaque = gatherTransparentRegion(mNavigationColorViewState, region);
		boolean decorOpaque = super.gatherTransparentRegion(region);

		// combine bools after computation, so each method above always executes
		return statusOpaque \|\| navOpaque \|\| decorOpaque;
		}

		boolean gatherTransparentRegion(ColorViewState colorViewState, Region region) {
		if (colorViewState.view != null && colorViewState.visible && isResizing()) {
		// If a visible ColorViewState is in a resizing host DecorView, forcibly register its
		// opaque area, since it's drawn by a different root RenderNode. It would otherwise be
		// rejected by ViewGroup#gatherTransparentRegion() for the view not being VISIBLE.
		return colorViewState.view.gatherTransparentRegion(region);
		}
		return false; // no opaque area added
		}

		@Override
		public void onDraw(Canvas c) {
		super.onDraw(c);