Fixed the touch handling when QS was open

When QS was open, the panel could not always be correctly
scrolled.

Bug: 21525300
Change-Id: If18878d08d20254d9d822d80a295163703d897aa
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
index 2fe98bb..4dbee99 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
@@ -638,10 +638,9 @@
 
     @Override
     protected boolean isInContentBounds(float x, float y) {
-        float yTransformed = y - mNotificationStackScroller.getY();
         float stackScrollerX = mNotificationStackScroller.getX();
-        return mNotificationStackScroller.isInContentBounds(yTransformed) && stackScrollerX < x
-                && x < stackScrollerX + mNotificationStackScroller.getWidth();
+        return !mNotificationStackScroller.isBelowLastNotification(x - stackScrollerX, y)
+                && stackScrollerX < x && x < stackScrollerX + mNotificationStackScroller.getWidth();
     }
 
     private void initDownStates(MotionEvent event) {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/stack/NotificationStackScrollLayout.java b/packages/SystemUI/src/com/android/systemui/statusbar/stack/NotificationStackScrollLayout.java
index 4ae800f..0165372 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/stack/NotificationStackScrollLayout.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/stack/NotificationStackScrollLayout.java
@@ -2614,7 +2614,7 @@
         }
     }
 
-    private boolean isBelowLastNotification(float touchX, float touchY) {
+    public boolean isBelowLastNotification(float touchX, float touchY) {
         int childCount = getChildCount();
         for (int i = childCount - 1; i >= 0; i--) {
             ExpandableView child = (ExpandableView) getChildAt(i);
@@ -2640,7 +2640,7 @@
                 }
             }
         }
-        return touchY > mIntrinsicPadding;
+        return touchY > mTopPadding + mStackTranslation;
     }
 
     private void updateExpandButtons() {