How to change the size of NSImageView control from within program?

Question

The following line of code displays an image on my application window, within an NSImageView control named outputImageView. I used Interface Builder to put the NSImageView control onto the window, initially (then bound it to outputImageView). How do I change the size of the NSImageView control within my program, so that it matches the size of the actual image I am displaying (which may change, periodically)? And what if I wanted to change the anchor point for the image (i.e., centered, left edge, bottom right, or whatever? Thanks in advance!

[outputImageView setImage: outputImage]; 

Answer 1

I don't know a way to change an NSImageView's size programattically, but you can use - setImageAlignment: to determine where the image should be positioned in the frame. Also, you may want to look at using IKImageView if you want a more flexible image view.

Answer 2

Like any other NSView, use -setFrame::

[outputImageView setFrame:NSMakeRect(x, y, w, h)]

The coordinates are specified in the system of the containing view.

If you need to change only the size (leaving the origin alone), you can use -setFrameSize::

[outputImageView setFrameSize:NSMakeSize(w, h)]

For alignment, use NSImageView's -setImageAlignment:, as jshier wrote.