Merge "Turn off AA while notification expanding animation is running"

graphics/java/android/graphics/drawable/GradientDrawable.java

@@ -825,6 +825,14 @@ public class GradientDrawable extends Drawable {
         mFillPaint.setXfermode(mode);
     }
 
+    /**
+     * @param aa to draw this drawable with
+     * @hide
+     */
+    public void setAntiAlias(boolean aa) {
+        mFillPaint.setAntiAlias(aa);
+    }
+
     private void buildPathIfDirty() {
         final GradientState st = mGradientState;
         if (mPathIsDirty) {

packages/SystemUI/src/com/android/systemui/statusbar/NotificationBackgroundView.java

@@ -249,6 +249,9 @@ public class NotificationBackgroundView extends View {
                     (GradientDrawable) ((LayerDrawable) mBackground).getDrawable(0);
             gradientDrawable.setXfermode(
                     running ? new PorterDuffXfermode(PorterDuff.Mode.SRC) : null);
+            // Speed optimization: disable AA if transfer mode is not SRC_OVER. AA is not easy to
+            // spot during animation anyways.
+            gradientDrawable.setAntiAlias(!running);
         }
         if (!mExpandAnimationRunning) {
             setDrawableAlpha(mDrawableAlpha);