Fix some cases when enabling hierarchical animation

- Fix split-screen primary stack's thumbnail won't animate:
    - in ActivityRecord#attachThumbnailAnimation, using WC#getAnimatingContainer
      to align the current animating layer.

- Fix animation surface position shifted when launching activity in
  split-screen secondary stack:
    - Using WC#getRelativeDisplayedPosition in WC#getAnimationAdapter
    to get relative position of leash parent.

Also, refined below logics:
- Refine logics in WindowContainer#getAnimationBounds with
  getDisplayBounds for fixing a regression issue that launching activity
  from split screen secondary stack the animation will moving to top stack rather
  then moving to bottom stack.

Bug: 142617871
Bug: 131661052

Test: Refectoring CL, all existing tests passed.
Test: Manual testing for:
      1) Enable hierarchical animation flag by using adb command:
         adb shell setprop persist.wm.hierarchical_animations 1
      2) Entering split-screen mode from recents app.
      3) Make sure task scroll-up thumbnail animation for split-screen primary
         stack can animated.
      4) Launch app to split-screen secondary stack, make sure launching
      animation position will right below divider instead going to top-side
      of screen.

Change-Id: I3ccc39ab1f3f02cecff8631512dc94f2f01c4be3

services/core/java/com/android/server/wm/ActivityRecord.java

@@ -5934,7 +5934,11 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
             mAnimationBoundsLayer = createAnimationBoundsLayer(t);
 
             // Crop to stack bounds.
-            t.setWindowCrop(mAnimationBoundsLayer, mTmpRect);
+            if (!WindowManagerService.sHierarchicalAnimations) {
+                // For Hierarchical animation, we don't need to set window crop since the leash
+                // surface size has already same as the animating container.
+                t.setWindowCrop(mAnimationBoundsLayer, mTmpRect);
+            }
             t.setLayer(mAnimationBoundsLayer, layer);
 
             // Reparent leash to animation bounds layer.
@@ -5982,9 +5986,10 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
             return;
         }
         clearThumbnail();
+        final Transaction transaction = getAnimatingContainer().getPendingTransaction();
         mThumbnail = new WindowContainerThumbnail(mWmService.mSurfaceFactory,
-                getPendingTransaction(), this, thumbnailHeader);
-        mThumbnail.startAnimation(getPendingTransaction(), loadThumbnailAnimation(thumbnailHeader));
+                transaction, getAnimatingContainer(), thumbnailHeader);
+        mThumbnail.startAnimation(transaction, loadThumbnailAnimation(thumbnailHeader));
     }
 
     /**
@@ -6011,13 +6016,13 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
         if (thumbnail == null) {
             return;
         }
+        final Transaction transaction = getAnimatingContainer().getPendingTransaction();
         mThumbnail = new WindowContainerThumbnail(mWmService.mSurfaceFactory,
-                getPendingTransaction(), this, thumbnail);
+                transaction, getAnimatingContainer(), thumbnail);
         final Animation animation =
                 getDisplayContent().mAppTransition.createCrossProfileAppsThumbnailAnimationLocked(
                         win.getFrameLw());
-        mThumbnail.startAnimation(getPendingTransaction(), animation, new Point(frame.left,
-                frame.top));
+        mThumbnail.startAnimation(transaction, animation, new Point(frame.left, frame.top));
     }
 
     private Animation loadThumbnailAnimation(GraphicBuffer thumbnailHeader) {

services/core/java/com/android/server/wm/WindowContainer.java

@@ -42,6 +42,7 @@ import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_ANIM;
 import static com.android.server.wm.WindowManagerDebugConfig.TAG_WITH_CLASS_NAME;
 import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM;
 import static com.android.server.wm.WindowManagerService.logWithStack;
+import static com.android.server.wm.WindowManagerService.sHierarchicalAnimations;
 import static com.android.server.wm.WindowStateAnimator.STACK_CLIP_AFTER_ANIM;
 
 import android.annotation.CallSuper;
@@ -1855,7 +1856,7 @@ class WindowContainer<E extends WindowContainer> extends ConfigurationContainer<
     // TODO: Remove this and use #getBounds() instead once we set an app transition animation
     // on TaskStack.
     Rect getAnimationBounds(int appStackClipMode) {
-        return getBounds();
+        return getDisplayedBounds();
     }
 
     /**
@@ -1929,7 +1930,11 @@ class WindowContainer<E extends WindowContainer> extends ConfigurationContainer<
 
         // Separate position and size for use in animators.
         mTmpRect.set(getAnimationBounds(appStackClipMode));
-        mTmpPoint.set(mTmpRect.left, mTmpRect.top);
+        if (sHierarchicalAnimations) {
+            getRelativeDisplayedPosition(mTmpPoint);
+        } else {
+            mTmpPoint.set(mTmpRect.left, mTmpRect.top);
+        }
         mTmpRect.offsetTo(0, 0);
 
         final RemoteAnimationController controller =