docs: public boolean contains(MotionEvent event){
  		if (mPath.isEmpty())
  			return false;
  		RectF bounds = new RectF(); //bounds of the Path
  		mPath.computeBounds(bounds, true);
  		Region region = new Region();
  		//Path has been computed in #draw (we assume that if it can be clicked, it has been drawn before). 
  		region.setPath(mPath, new Region((int)bounds.left, (int)bounds.top, 
  				(int) (bounds.right), (int) (bounds.bottom)));
  		return region.contains((int)event.getX(), (int)event.getY());
  	}