Ok thank you.
The most complex part for me is to implement the dynamic crop rectangle. Im using a moveable panel and other 4 small panel on its borders for resizing it, with the touch event. Im on the right way?
I would probably do with a transparent panel on top, use it's touch event to move the edges of the crop rectangle doing all this graphicaly.
If you want you can post your code and I'll have a look at it.
Now i have a panel on top, but i have other 4 small panel for resize it, cause in the touch event of the panel i put coding for moving it, not resizing. The other 4 small panels have coding for resizing. Is there another way to do this without these 4 small panels? I will post my test code asap.
Sorry for bad english if you cant understand, im from italy. Thank you very much for your help.
[Edit: Project attached, is only a test for the dynamic crop/resize rect. There are still some bugs, i'm working on it.]