public boolean isCapturedViewUnder(int x, int y) {
        return isViewUnder(mCapturedView, x, y);
    }
Determine if the currently captured view is under the given point in the
parent view's coordinate system. If there is no captured view this method
will return false.

@param x X position to test in the parent's coordinate system
@param y Y position to test in the parent's coordinate system
@return true if the captured view is under the given point, false otherwise
app/src/main/java/home/smart/fly/animations/widget/slidepanel/ViewDragHelper.java