Preferences: Scroll Wallpaper

Change-Id: If20b0f45cc773f7e03565b638ae745ced3070d5c

1 files changed, 28 insertions, 6 deletions

diff --git a/src/com/cyanogenmod/trebuchet/Workspace.java b/src/com/cyanogenmod/trebuchet/Workspace.java
index cd60d5cff..6845cd1ca 100644
--- a/src/com/cyanogenmod/trebuchet/Workspace.java
+++ b/src/com/cyanogenmod/trebuchet/Workspace.java
@@ -263,6 +263,7 @@ public class Workspace extends SmoothPagedView
     private int mDefaultHomescreen;
     private boolean mShowSearchBar;
     private boolean mResizeAnyWidget;
+    private boolean mScrollWallpaper;
     private boolean mShowScrollingIndicator;
 
     /**
@@ -338,6 +339,7 @@ public class Workspace extends SmoothPagedView
         }
         mShowSearchBar = PreferencesProvider.Interface.Homescreen.getShowSearchBar(context);
         mResizeAnyWidget = PreferencesProvider.Interface.Homescreen.getResizeAnyWidget(context);
+        mScrollWallpaper = PreferencesProvider.Interface.Homescreen.getScrollWallpaper(context);
         mShowScrollingIndicator = PreferencesProvider.Interface.Homescreen.getShowScrollingIndicator(context);
 
         mLauncher = (Launcher) context;
@@ -480,8 +482,10 @@ public class Workspace extends SmoothPagedView
         mWallpaperOffset = new WallpaperOffsetInterpolator();
         Display display = mLauncher.getWindowManager().getDefaultDisplay();
         display.getSize(mDisplaySize);
-        mWallpaperTravelWidth = (int) (mDisplaySize.x *
-                wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y));
+        if (mScrollWallpaper) {
+            mWallpaperTravelWidth = (int) (mDisplaySize.x *
+                    wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y));
+        }
 
         mMaxDistanceForFolderCreation = (0.55f * res.getDimensionPixelSize(R.dimen.app_icon_size));
         mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity);
@@ -963,6 +967,13 @@ public class Workspace extends SmoothPagedView
         }
     }
 
+    private void centerWallpaperOffset() {
+        if (mWindowToken != null) {
+            mWallpaperManager.setWallpaperOffsetSteps(0.5f, 0);
+            mWallpaperManager.setWallpaperOffsets(mWindowToken, 0.5f, 0);
+        }
+    }
+
     public void updateWallpaperOffsetImmediately() {
         mUpdateWallpaperOffsetImmediately = true;
     }
@@ -992,13 +1003,17 @@ public class Workspace extends SmoothPagedView
     @Override
     protected void updateCurrentPageScroll() {
         super.updateCurrentPageScroll();
-        computeWallpaperScrollRatio(mCurrentPage);
+        if (mScrollWallpaper) {
+            computeWallpaperScrollRatio(mCurrentPage);
+        }
     }
 
     @Override
     protected void snapToPage(int whichPage) {
         super.snapToPage(whichPage);
-        computeWallpaperScrollRatio(whichPage);
+        if (mScrollWallpaper) {
+            computeWallpaperScrollRatio(whichPage);
+        }
     }
 
     @Override
@@ -1145,7 +1160,9 @@ public class Workspace extends SmoothPagedView
     @Override
     public void computeScroll() {
         super.computeScroll();
-        syncWallpaperOffsetWithScroll();
+        if (mScrollWallpaper) {
+            syncWallpaperOffsetWithScroll();
+        }
     }
 
     void showOutlines() {
@@ -1373,7 +1390,9 @@ public class Workspace extends SmoothPagedView
 
     @Override
     protected void onDraw(Canvas canvas) {
-        updateWallpaperOffsets();
+        if (mScrollWallpaper) {
+            updateWallpaperOffsets();
+        }
 
         // Draw the background gradient if necessary
         if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) {
@@ -3376,6 +3395,9 @@ public class Workspace extends SmoothPagedView
         // needed
         updateChildrenLayersEnabled();
         setWallpaperDimension();
+        if (!mScrollWallpaper) {
+            centerWallpaperOffset();
+        }
     }
 
     /**