From e525a35704043205ac5131898cc3291407864c32 Mon Sep 17 00:00:00 2001
From: Jorim Jaggi <jjaggi@google.com>
Date: Fri, 27 May 2016 16:56:55 -0700
Subject: [PATCH] Fix multi-window enter animation

Stable insets are not calculated in the first pass, so fetch it
manually if needed to avoid a relayout.

Bug: 28705801
Change-Id: I8f9a3bab96b597a80963d7ebcc8b19454b3e45a6
---
 .../com/android/systemui/stackdivider/DividerView.java    | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/packages/SystemUI/src/com/android/systemui/stackdivider/DividerView.java b/packages/SystemUI/src/com/android/systemui/stackdivider/DividerView.java
index d09587bbd3e40..998f50f205d7f 100644
--- a/packages/SystemUI/src/com/android/systemui/stackdivider/DividerView.java
+++ b/packages/SystemUI/src/com/android/systemui/stackdivider/DividerView.java
@@ -1064,6 +1064,14 @@ public class DividerView extends FrameLayout implements OnTouchListener,
         int position = DockedDividerUtils.calculatePositionForBounds(event.initialRect,
                 mDockSide, mDividerSize);
         mEntranceAnimationRunning = true;
+
+        // Insets might not have been fetched yet, so fetch manually if needed.
+        if (mStableInsets.isEmpty()) {
+            SystemServicesProxy.getInstance(mContext).getStableInsets(mStableInsets);
+            mSnapAlgorithm = null;
+            initializeSnapAlgorithm();
+        }
+
         resizeStack(position, mSnapAlgorithm.getMiddleTarget().position,
                 mSnapAlgorithm.getMiddleTarget());
     }