Merge "Keep rotation transform for exiting PiP with fixed rotation" into tm-qpr-dev am: 6ecaf45857

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20664788

Change-Id: Ic46a7427b06abd3ec65abf74fd15f46e689603d3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

libs/WindowManager/Shell/src/com/android/wm/shell/pip/PipTransition.java

@@ -358,8 +358,10 @@ public class PipTransition extends PipTransitionController {
             WindowContainerTransaction wct = null;
             if (isOutPipDirection(direction)) {
                 // Only need to reset surface properties. The server-side operations were already
-                // done at the start.
-                if (tx != null) {
+                // done at the start. But if it is running fixed rotation, there will be a seamless
+                // display transition later. So the last rotation transform needs to be kept to
+                // avoid flickering, and then the display transition will reset the transform.
+                if (tx != null && !mInFixedRotation) {
                     mFinishTransaction.merge(tx);
                 }
             } else {

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

@@ -1930,7 +1930,6 @@ class Task extends TaskFragment {
             mTaskSupervisor.scheduleUpdateMultiWindowMode(this);
         }
 
-        final int newWinMode = getWindowingMode();
         if (shouldStartChangeTransition(prevWinMode, mTmpPrevBounds)) {
             initializeChangeTransition(mTmpPrevBounds);
         }
@@ -1944,16 +1943,15 @@ class Task extends TaskFragment {
             }
         }
 
-        if (pipChanging && wasInPictureInPicture) {
+        if (pipChanging && wasInPictureInPicture
+                && !mTransitionController.isShellTransitionsEnabled()) {
             // If the top activity is changing from PiP to fullscreen with fixed rotation,
             // clear the crop and rotation matrix of task because fixed rotation will handle
             // the transformation on activity level. This also avoids flickering caused by the
             // latency of fullscreen task organizer configuring the surface.
             final ActivityRecord r = topRunningActivity();
             if (r != null && mDisplayContent.isFixedRotationLaunchingApp(r)) {
-                getSyncTransaction().setWindowCrop(mSurfaceControl, null)
-                        .setCornerRadius(mSurfaceControl, 0f)
-                        .setMatrix(mSurfaceControl, Matrix.IDENTITY_MATRIX, new float[9]);
+                resetSurfaceControlTransforms();
             }
         }
 

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

@@ -588,9 +588,7 @@ class WindowToken extends WindowContainer<WindowState> {
                 .setCallsite("WindowToken.getOrCreateFixedRotationLeash")
                 .build();
         t.setPosition(leash, mLastSurfacePosition.x, mLastSurfacePosition.y);
-        t.show(leash);
         t.reparent(getSurfaceControl(), leash);
-        t.setAlpha(getSurfaceControl(), 1.f);
         mFixedRotationTransformLeash = leash;
         updateSurfaceRotation(t, rotation, mFixedRotationTransformLeash);
         return mFixedRotationTransformLeash;