Android gradient emboss effect
<p>I am trying to achieve from code the following: (can't post images unfortunatelly)</p>

<p>A rectangle with rounded corners, with an emboss effect (the light comes from top left corner).
In the middle there is a circle engraved in the rectangle. Imagine a water surface, and a drop of water hits the surface. It creates a dent in the surface. That circle is also painted with some linear gradient.</p>

<p>The problem is I could only use the EmbossMaskFilter from Android to raise the surface, to make it closer to the user eye, but I don't know how to implement the opposite.
Anyone can help me with that?</p>

<p>Thank you very much.</p>
