Library or ideas to create a image editor on android

I need to load a image and create some annotation on top of it. I want to be able to put rectangles and text blocks on the image area and drag and drop them. Something like diamont lite (only with a user defined image background). To see a screen of diamond like use this link :

http://br.androlib.com/android.application.com-welant开发者_运维知识库-dianoid-lite-zCzxj.aspx

I was not able to find any library to make this. But what kind of classes should I use to implement this ? I am doing some tests here but I am not able to get a smooth editing.

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I was not able to find a library to it. But it can be done using a ImageSurfaceView. I can use the onDraw and onTouchEvent methods to do what I need.