'Test whether the mouse event occurred in the patch.
Returns T/F, {}'

def contains(self, mouseevent, radius=None):

    if callable(self._contains):
        return self._contains(self, mouseevent)
    radius = self._process_radius(radius)
    inside = self.get_path().contains_point((mouseevent.x, mouseevent.y), self.get_transform(), radius)
    return (inside, {})
