Is there an easy way of determining where the user has clicked in an image
displayed in an NSImageView? This strikes me as a reasonable thing to want to
do, but I can't work out how.
When I get the mouseDown event in my NSImageView subclass, I can call:
thisMousePoint = [self convertPoint:thisMousePoint fromView:[[theEvent
window] contentView]];
to get the mouse down in NSImageView pixel coordinates. However this may well
not be the same as the NSImage coordinates - e.g. if the view is set to
preserve aspect ratio and the image and view aspect ratios do not match.
Is there a neat way of converting to the "effective coordinate system" of the
NSImage as displayed in the NSImageView? Ultimately, I want to work out which
pixel of a bitmap image the user has clicked on. I could do this conversion
myself, but it would require quite a lot of checking of exactly what settings
the NSImageView was using, so this seems to me like something the framework
should be able to do for me...
Thanks in advance
Jonny
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