commit ecc06b32305ac234db24e3f76bcae0199b80c395
author Robert Carr <racarr@google.com> Tue Apr 18 14:25:10 2017 -0700
committer Robert Carr <racarr@google.com> Wed Apr 19 11:55:32 2017 -0700
tree ef76ec8934de545dc426a594814c1e21ce1caf71
parent 585f7c1b204ba9ad756af9a7d67b634eac194fba

Delay PiP transition to fullscreen until activities draw.

To avoid awful stretching.

Bug: 37473110
Test: Transition app fullscreen verify no awful video stretching.
Change-Id: I810a72207e45b8f83a63c9f0b3cc9a433569852c

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

diff --git a/services/core/java/com/android/server/wm/AppWindowToken.java b/services/core/java/com/android/server/wm/AppWindowToken.java
index 1fb34eb..7634644 100644
--- a/services/core/java/com/android/server/wm/AppWindowToken.java
+++ b/services/core/java/com/android/server/wm/AppWindowToken.java
@@ -1280,6 +1280,11 @@
                 // WindowStateAnimator#commitFinishDrawingLocked() will call performShowLocked().
                 dc.setLayoutNeeded();
                 mService.mH.obtainMessage(NOTIFY_ACTIVITY_DRAWN, token).sendToTarget();
+
+                final TaskStack s = getStack();
+                if (s != null) {
+                    s.onAllWindowsDrawn();
+                }
             }
         }