[MonoTouch] Image Layers and Editing

[Miguel de Icaza]

Hello,

I have a client that is looking to created "pages" of pictures where an
> image
> is shown through another layer. For instance you have a white square with a
> circle cut in it and the image in under the white square and the picture
> shows through the circle cut out. How can I offer the ability to cut and
> crop the photo and preview the result in the scenario listed above.
>

There are many options to do this.

You could create a UIView that provides its own Draw method, and in the
draw method, you draw the rectangle, and then use a clipping path for a
circle and draw the image on top of it.

Another option would be to create an image with the rectangle that has a
transparent hole with the circle in the middle.   Then add your image to
the view, and then add this image with the hole on top of it.

UIImageView image = new UIImageView (UIImage.FromFile ("image.png"));
UIImageView rectangleWithHole = new UIImageView (UImage.FromFile
("imageWithHole.png"));

view.AddSubview (image);
view.AddSubview (rectangleWithHole);

Miguel
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