Zooming in an NSView

Question

I have an NSView in which the user can draw circles. These circles are stored as an array of NSBezierPaths, and in drawRect:, I loop through the array and call -stroke on each of the paths. How do I add a button to zoom in and out the NSView? Just change the bounds of the view?

Thanks.

Answer 1

Send your view a scaleUnitSquareToSize: message.

Answer 2

You might also find this informative:

https://developer.apple.com/library/content/qa/qa1346/_index.html

The code in that document lets you add a "scale" property to a view.