Handful of small changes / bug fixes

-> Fixed fade in of overview panel on first animation
-> Fixed long press issue in page indicator region
-> Added background scrim to overview mode
-> Fading search bar in overview mode / disabling clickability
   of search bar and mic

Change-Id: Ic9bf84f7cb9ff2991c5b4e93273d9e3f65556e5c

src/com/android/launcher3/PagedView.java

@@ -133,6 +133,8 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
     protected float mTotalMotionX;
     private int mLastScreenCenter = -1;
 
+    private boolean mCancelTap;
+
     private int[] mPageScrolls;
 
     protected final static int TOUCH_STATE_REST = 0;
@@ -735,7 +737,7 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
         // NOTE: We multiply by 1.5f to account for the fact that depending on the offset of the
         // viewport, we can be at most one and a half screens offset once we scale down
         DisplayMetrics dm = getResources().getDisplayMetrics();
-        int maxSize = Math.max(dm.widthPixels, dm.heightPixels);
+        int maxSize = Math.max(dm.widthPixels, dm.heightPixels + mInsets.top + mInsets.bottom);
         int parentWidthSize, parentHeightSize;
         int scaledWidthSize, scaledHeightSize;
         if (mUseMinScale) {
@@ -1851,7 +1853,9 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
                     onDropToDelete();
                 }
             } else {
-                onUnhandledTap(ev);
+                if (!mCancelTap) {
+                    onUnhandledTap(ev);
+                }
             }
 
             // Remove the callback to wait for the side page hover timeout
@@ -1884,6 +1888,7 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
     private void resetTouchState() {
         releaseVelocityTracker();
         endReordering();
+        mCancelTap = false;
         mTouchState = TOUCH_STATE_REST;
         mActivePointerId = INVALID_POINTER;
     }
@@ -2156,6 +2161,12 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
         return mAllowLongPress;
     }
 
+    @Override
+    public boolean performLongClick() {
+        mCancelTap = true;
+        return super.performLongClick();
+    }
+
     /**
      * Set true to allow long-press events to be triggered, usually checked by
      * {@link Launcher} to accept or block dpad-initiated long-presses.