I've been trying to do some research on a Mac program I have in mind. However, the information is not always as good as it is for iOS programming. Anyway, what I want to do is use an IKImageView in a single window application to crop a photo. I want to be able to force a certain aspect ratio for the crop tool. I have read through all the documentation I could find for the IKImageView and I don't see a way to force a certain aspect ratio... Any pointers?