From 6c5e169de610b0dee24813e7126818d47fc6fc96 Mon Sep 17 00:00:00 2001
From: Tony Wickham <twickham@google.com>
Date: Fri, 20 Apr 2018 11:32:03 -0700
Subject: [PATCH] Prevent unecessary invalidates

updateEmptyMessage() calls invalidate() whenever size has changed. We
were only updating mLastMeasuredSize when showing the empty message,
however, so we were invalidating whenever updateEmptyMessage was called.

Change-Id: Ic9046738e4f53d53aded6347a273522c53394991
---
 quickstep/src/com/android/quickstep/views/RecentsView.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index 6a2df0b878..2e45d8320b 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -943,6 +943,7 @@ public abstract class RecentsView<T extends BaseActivity>
         boolean hasValidSize = getWidth() > 0 && getHeight() > 0;
         if (sizeChanged && hasValidSize) {
             mEmptyTextLayout = null;
+            mLastMeasureSize.set(getWidth(), getHeight());
         }
 
         if (!mShowEmptyMessage) return;
@@ -953,7 +954,6 @@ public abstract class RecentsView<T extends BaseActivity>
         scrollTo(0, 0);
 
         if (hasValidSize && mEmptyTextLayout == null) {
-            mLastMeasureSize.set(getWidth(), getHeight());
             int availableWidth = mLastMeasureSize.x - mEmptyMessagePadding - mEmptyMessagePadding;
             mEmptyTextLayout = StaticLayout.Builder.obtain(mEmptyMessage, 0, mEmptyMessage.length(),
                     mEmptyMessagePaint, availableWidth)