Make HolographicOutlineHelper a singleton.

It's a pretty heavy object, including three Paints at 74
bytes apiece, and we allocate one for every workspace and
every icon. We really only need one.

Change-Id: Ic9e12d478c3be27b13133718875c91540f7ccf4c

3 files changed, 11 insertions, 3 deletions

diff --git a/src/com/android/launcher3/BubbleTextView.java b/src/com/android/launcher3/BubbleTextView.java
index 7cac8a68c..7c7d93e4d 100644
--- a/src/com/android/launcher3/BubbleTextView.java
+++ b/src/com/android/launcher3/BubbleTextView.java
@@ -45,7 +45,7 @@ public class BubbleTextView extends TextView {
 
     private int mPrevAlpha = -1;
 
-    private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper();
+    private final HolographicOutlineHelper mOutlineHelper = HolographicOutlineHelper.obtain();
     private final Canvas mTempCanvas = new Canvas();
     private final Rect mTempRect = new Rect();
     private boolean mDidInvalidateForPressedState;
diff --git a/src/com/android/launcher3/HolographicOutlineHelper.java b/src/com/android/launcher3/HolographicOutlineHelper.java
index 0344cd537..47c40b657 100644
--- a/src/com/android/launcher3/HolographicOutlineHelper.java
+++ b/src/com/android/launcher3/HolographicOutlineHelper.java
@@ -43,6 +43,8 @@ public class HolographicOutlineHelper {
     private static final int MEDIUM = 1;
     private static final int EXTRA_THICK = 2;
 
+    static HolographicOutlineHelper INSTANCE;
+
     static {
         final float scale = LauncherAppState.getScreenDensity();
 
@@ -56,9 +58,11 @@ public class HolographicOutlineHelper {
         sExtraThickInnerBlurMaskFilter = new BlurMaskFilter(scale * 6.0f, BlurMaskFilter.Blur.NORMAL);
         sThickInnerBlurMaskFilter = new BlurMaskFilter(scale * 4.0f, BlurMaskFilter.Blur.NORMAL);
         sMediumInnerBlurMaskFilter = new BlurMaskFilter(scale * 2.0f, BlurMaskFilter.Blur.NORMAL);
+
+        INSTANCE = new HolographicOutlineHelper();
     }
 
-    HolographicOutlineHelper() {
+    private HolographicOutlineHelper() {
         mHolographicPaint.setFilterBitmap(true);
         mHolographicPaint.setAntiAlias(true);
         mBlurPaint.setFilterBitmap(true);
@@ -68,6 +72,10 @@ public class HolographicOutlineHelper {
         mErasePaint.setAntiAlias(true);
     }
 
+    public static HolographicOutlineHelper obtain() {
+        return INSTANCE;
+    }
+
     /**
      * Returns the interpolated holographic highlight alpha for the effect we want when scrolling
      * pages.
diff --git a/src/com/android/launcher3/Workspace.java b/src/com/android/launcher3/Workspace.java
index fd324420a..abf3b9832 100644
--- a/src/com/android/launcher3/Workspace.java
+++ b/src/com/android/launcher3/Workspace.java
@@ -167,7 +167,7 @@ public class Workspace extends SmoothPagedView
     /** Is the user is dragging an item near the edge of a page? */
     private boolean mInScrollArea = false;
 
-    private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper();
+    private final HolographicOutlineHelper mOutlineHelper = HolographicOutlineHelper.obtain();
     private Bitmap mDragOutline = null;
     private final Rect mTempRect = new Rect();
     private final int[] mTempXY = new int[2];