Merge "Always enable hardware layers in widgets in keyguard while dragging." into jb-mr1-dev

Author: Jim Miller

policy/src/com/android/internal/policy/impl/keyguard/KeyguardWidgetFrame.java

@@ -117,14 +117,7 @@ void setOverScrollAmount(float r, boolean left) {
             mOverScrollAmount = r;
             mForegroundGradient = left ? mLeftToRightGradient : mRightToLeftGradient;
             mForegroundAlpha = (int) Math.round((0.85f * r * 255));
-            if (getLayerType() != LAYER_TYPE_HARDWARE) {
-                setLayerType(LAYER_TYPE_HARDWARE, null);
-            }
             invalidate();
-        } else {
-            if (getLayerType() != LAYER_TYPE_NONE) {
-                setLayerType(LAYER_TYPE_NONE, null);
-            }
         }
     }
 }

policy/src/com/android/internal/policy/impl/keyguard/KeyguardWidgetPager.java

@@ -76,6 +76,25 @@ protected void onUnhandledTap(MotionEvent ev) {
         }
     }
 
+    @Override
+    protected void onPageBeginMoving() {
+        // Enable hardware layers while pages are moving
+        // TODO: We should only do this for the two views that are actually moving
+        int children = getChildCount();
+        for (int i = 0; i < children; i++) {
+            getChildAt(i).setLayerType(LAYER_TYPE_HARDWARE, null);
+        }
+    }
+
+    @Override
+    protected void onPageEndMoving() {
+        // Disable hardware layers while pages are moving
+        int children = getChildCount();
+        for (int i = 0; i < children; i++) {
+            getChildAt(i).setLayerType(LAYER_TYPE_NONE, null);
+        }
+    }
+
     /*
      * This interpolator emulates the rate at which the perceived scale of an object changes
      * as its distance from a camera increases. When this interpolator is applied to a scale