DO NOT MERGE: Fixing regression where scroll position would be offset when rotated.

- Fixes the scrolling issue only in conjunction with framework measure fix
- Updating the wallpaper gallery item background

Change-Id: I156de59a3eadfdaa61018c0a74ad0614d76cde6d

res/drawable/wallpaper_gallery_item.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2011 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_focused="true" android:drawable="@drawable/grid_focused" />
+    <item android:state_pressed="true" android:drawable="@drawable/grid_pressed" />
+    <item android:state_selected="true" android:drawable="@drawable/grid_selected" />
+    <item android:drawable="@android:color/transparent" />
+</selector>

res/layout/wallpaper_item.xml

@@ -18,5 +18,6 @@
     android:id="@+id/wallpaper_image"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
+    android:background="@drawable/wallpaper_gallery_item"
     android:scaleType="fitXY"
     android:focusable="true" />

src/com/android/launcher2/PagedView.java

@@ -539,15 +539,6 @@ public abstract class PagedView extends ViewGroup {
         }
 
         if (DEBUG) Log.d(TAG, "PagedView.onLayout()");
-        if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) {
-            setHorizontalScrollBarEnabled(false);
-            int newX = getChildOffset(mCurrentPage) - getRelativeChildOffset(mCurrentPage);
-            scrollTo(newX, 0);
-            mScroller.setFinalX(newX);
-            setHorizontalScrollBarEnabled(true);
-            mFirstLayout = false;
-        }
-
         final int verticalPadding = mPaddingTop + mPaddingBottom;
         final int childCount = getChildCount();
         int childLeft = 0;
@@ -578,6 +569,16 @@ public abstract class PagedView extends ViewGroup {
                 childLeft += childWidth + mPageSpacing;
             }
         }
+
+        if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) {
+            setHorizontalScrollBarEnabled(false);
+            int newX = getChildOffset(mCurrentPage) - getRelativeChildOffset(mCurrentPage);
+            scrollTo(newX, 0);
+            mScroller.setFinalX(newX);
+            setHorizontalScrollBarEnabled(true);
+            mFirstLayout = false;
+        }
+
         if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) {
             mFirstLayout = false;
         }