Merge "Add gradient to PIP dismiss target, per mocks." into rvc-dev am: 3e29cb85d5 am: 3ff8830b6b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11795070

Change-Id: I44ccfb9be23768a58fd33ab2e1b6bc74723e3350

packages/SystemUI/src/com/android/systemui/pip/phone/PipTouchHandler.java

@@ -30,6 +30,7 @@ import android.graphics.PixelFormat;
 import android.graphics.Point;
 import android.graphics.PointF;
 import android.graphics.Rect;
+import android.graphics.drawable.TransitionDrawable;
 import android.os.Handler;
 import android.os.RemoteException;
 import android.util.Log;
@@ -76,6 +77,9 @@ import java.io.PrintWriter;
 public class PipTouchHandler {
     private static final String TAG = "PipTouchHandler";
 
+    /** Duration of the dismiss scrim fading in/out. */
+    private static final int DISMISS_TRANSITION_DURATION_MS = 200;
+
     // Allow dragging the PIP to a location to close it
     private final boolean mEnableDismissDragToEdge;
     // Allow PIP to resize to a slightly bigger state upon touch
@@ -249,6 +253,8 @@ public class PipTouchHandler {
 
         mTargetView = new DismissCircleView(context);
         mTargetViewContainer = new FrameLayout(context);
+        mTargetViewContainer.setBackgroundDrawable(
+                context.getDrawable(R.drawable.floating_dismiss_gradient_transition));
         mTargetViewContainer.setClipChildren(false);
         mTargetViewContainer.addView(mTargetView);
 
@@ -553,6 +559,9 @@ public class PipTouchHandler {
             mMagneticTargetAnimator
                     .spring(DynamicAnimation.TRANSLATION_Y, 0f, mTargetSpringConfig)
                     .start();
+
+            ((TransitionDrawable) mTargetViewContainer.getBackground()).startTransition(
+                    DISMISS_TRANSITION_DURATION_MS);
         }
     }
 
@@ -565,6 +574,9 @@ public class PipTouchHandler {
                         mTargetSpringConfig)
                 .withEndActions(() ->  mTargetViewContainer.setVisibility(View.GONE))
                 .start();
+
+        ((TransitionDrawable) mTargetViewContainer.getBackground()).reverseTransition(
+                DISMISS_TRANSITION_DURATION_MS);
     }
 
     /**