From 5e368ffbad2fb08e3eadab98eeefd4e1d05bdb2b Mon Sep 17 00:00:00 2001
From: Michael Jurka <mikejurka@google.com>
Date: Mon, 14 May 2012 23:13:15 -0700
Subject: [PATCH] Solve stutter when swiping All Apps the first time

Bug: 6024062
Change-Id: I6e05e9916389b1d90bd59443a04720fbf2338f5e
---
 src/com/android/launcher2/AppsCustomizePagedView.java | 3 ++-
 src/com/android/launcher2/PagedView.java              | 5 ++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/com/android/launcher2/AppsCustomizePagedView.java b/src/com/android/launcher2/AppsCustomizePagedView.java
index 5c91d35ccd..8aaa2d9df8 100644
--- a/src/com/android/launcher2/AppsCustomizePagedView.java
+++ b/src/com/android/launcher2/AppsCustomizePagedView.java
@@ -811,6 +811,7 @@ public class AppsCustomizePagedView extends PagedViewWithDraggableItems implemen
             onSyncWidgetPageItems(d);
         }
         mDeferredSyncWidgetPageItems.clear();
+        mForceDrawAllChildrenNextFrame = !toWorkspace;
     }
 
     @Override
@@ -1514,7 +1515,7 @@ public class AppsCustomizePagedView extends PagedViewWithDraggableItems implemen
     @Override
     protected void onPageEndMoving() {
         super.onPageEndMoving();
-
+        mForceDrawAllChildrenNextFrame = true;
         // We reset the save index when we change pages so that it will be recalculated on next
         // rotation
         mSaveInstanceStateItemIndex = -1;
diff --git a/src/com/android/launcher2/PagedView.java b/src/com/android/launcher2/PagedView.java
index 5d9cf81eb9..a9603acb04 100644
--- a/src/com/android/launcher2/PagedView.java
+++ b/src/com/android/launcher2/PagedView.java
@@ -133,6 +133,7 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
     protected boolean mAllowOverScroll = true;
     protected int mUnboundedScrollX;
     protected int[] mTempVisiblePagesRange = new int[2];
+    protected boolean mForceDrawAllChildrenNextFrame;
 
     // mOverScrollX is equal to getScrollX() when we're within the normal scroll range. Otherwise
     // it is equal to the scaled overscroll position. We use a separate value so as to prevent
@@ -796,13 +797,15 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
                 // View.INVISIBLE, preventing re-drawing of their hardware layer
                 for (int i = getChildCount() - 1; i >= 0; i--) {
                     final View v = getPageAt(i);
-                    if (leftScreen <= i && i <= rightScreen && shouldDrawChild(v)) {
+                    if (mForceDrawAllChildrenNextFrame ||
+                               (leftScreen <= i && i <= rightScreen && shouldDrawChild(v))) {
                         v.setVisibility(VISIBLE);
                         drawChild(canvas, v, drawingTime);
                     } else {
                         v.setVisibility(INVISIBLE);
                     }
                 }
+                mForceDrawAllChildrenNextFrame = false;
                 canvas.restore();
             }
         }