From ce7e05fbe8abd5f25ec47e0e05b5cc76ceb39d2e Mon Sep 17 00:00:00 2001
From: Michael Jurka <mikejurka@google.com>
Date: Tue, 1 Feb 2011 22:02:35 -0800
Subject: [PATCH] stop using hardware layers when workspace stops moving

helps workaround Bug 3417254

Change-Id: I874e5e52ab544fbb787e1021d6ee394e8f3a34d6
---
 src/com/android/launcher2/PagedView.java |  4 ++--
 src/com/android/launcher2/Workspace.java | 24 ++++++++++++++++++++++++
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/src/com/android/launcher2/PagedView.java b/src/com/android/launcher2/PagedView.java
index 6138b868fa..c018cf1fac 100644
--- a/src/com/android/launcher2/PagedView.java
+++ b/src/com/android/launcher2/PagedView.java
@@ -273,12 +273,12 @@ public abstract class PagedView extends ViewGroup {
         }
     }
 
-    private void pageBeginMoving() {
+    protected void pageBeginMoving() {
         mIsPageMoving = true;
         onPageBeginMoving();
     }
 
-    private void pageEndMoving() {
+    protected void pageEndMoving() {
         onPageEndMoving();
         mIsPageMoving = false;
     }
diff --git a/src/com/android/launcher2/Workspace.java b/src/com/android/launcher2/Workspace.java
index 2800b02a57..212ee096c6 100644
--- a/src/com/android/launcher2/Workspace.java
+++ b/src/com/android/launcher2/Workspace.java
@@ -306,9 +306,14 @@ public class Workspace extends SmoothPagedView
                 }
                 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false);
                 mAnimator = null;
+                enableChildrenLayers(false);
             }
         };
         mShrinkAnimationListener = new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationStart(Animator animation) {
+                enableChildrenLayers(true);
+            }
             @Override
             public void onAnimationEnd(Animator animation) {
                 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false);
@@ -1253,6 +1258,25 @@ public class Workspace extends SmoothPagedView
         return super.onTouchEvent(ev);
     }
 
+    protected void enableChildrenLayers(boolean enable) {
+        for (int i = 0; i < getPageCount(); i++) {
+            setChildrenLayersEnabled(enable);
+        }
+    }
+    @Override
+    protected void pageBeginMoving() {
+        enableChildrenLayers(true);
+        super.pageBeginMoving();
+    }
+
+    @Override
+    protected void pageEndMoving() {
+        if (!mIsSmall && !mIsInUnshrinkAnimation) {
+            enableChildrenLayers(false);
+        }
+        super.pageEndMoving();
+    }
+
     @Override
     protected void onWallpaperTap(MotionEvent ev) {
         final int[] position = mTempCell;