Reparent PiP overlay under task as soon as possible am: e338982c97

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/23731681

Change-Id: I24898f2d39f085f2a70895a7dd55b55a1c2d040b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java

@@ -1515,6 +1515,20 @@ public abstract class AbsSwipeUpHandler<T extends StatefulActivity<S>,
                 if (mSwipePipToHomeReleaseCheck != null) {
                     mSwipePipToHomeReleaseCheck.setCanRelease(false);
                 }
+
+                // grab a screenshot before the PipContentOverlay gets parented on top of the task
+                UI_HELPER_EXECUTOR.execute(() -> {
+                    mTaskSnapshot = mRecentsAnimationController.screenshotTask(
+                            mGestureState.getRunningTaskId());
+                });
+
+                // let SystemUi reparent the overlay leash as soon as possible
+                SystemUiProxy.INSTANCE.get(mContext).stopSwipePipToHome(
+                        mSwipePipToHomeAnimator.getTaskId(),
+                        mSwipePipToHomeAnimator.getComponentName(),
+                        mSwipePipToHomeAnimator.getDestinationBounds(),
+                        mSwipePipToHomeAnimator.getContentOverlay());
+
                 windowAnim = mSwipePipToHomeAnimators;
             } else {
                 mSwipePipToHomeAnimator = null;
@@ -2089,11 +2103,6 @@ public abstract class AbsSwipeUpHandler<T extends StatefulActivity<S>,
      */
     private void maybeFinishSwipePipToHome() {
         if (mIsSwipingPipToHome && mSwipePipToHomeAnimators[0] != null) {
-            SystemUiProxy.INSTANCE.get(mContext).stopSwipePipToHome(
-                    mSwipePipToHomeAnimator.getTaskId(),
-                    mSwipePipToHomeAnimator.getComponentName(),
-                    mSwipePipToHomeAnimator.getDestinationBounds(),
-                    mSwipePipToHomeAnimator.getContentOverlay());
             mRecentsAnimationController.setFinishTaskTransaction(
                     mSwipePipToHomeAnimator.getTaskId(),
                     mSwipePipToHomeAnimator.getFinishTransaction(),

quickstep/src/com/android/quickstep/SystemUiProxy.java

@@ -549,9 +549,9 @@ public class SystemUiProxy implements ISystemUiProxy {
     }
 
     /**
-     * Notifies WM Shell that launcher has finished all the animation for swipe to home. WM Shell
-     * can choose to fade out the overlay when entering PIP is finished, and WM Shell should be
-     * responsible for cleaning up the overlay.
+     * Notifies WM Shell that launcher has finished the preparation of the animation for swipe to
+     * home. WM Shell can choose to fade out the overlay when entering PIP is finished, and WM Shell
+     * should be responsible for cleaning up the overlay.
      */
     public void stopSwipePipToHome(int taskId, ComponentName componentName, Rect destinationBounds,
             SurfaceControl overlay) {