Initially, let me explain what I am aiming for. I desire a layout similar to the one below (however, replace the squares with circles):
|------------|
| |-------| |
| | button| |
| |-------| |
|------------|
The concept is to have a button enclosed within a circular image. Not only should the outer image be circular, but the button should also conform to this shape. How can I achieve this? Is there a method to superimpose one circular image on top of another?