On May 29, 2008, at 8:26 AM, Karl von Moller wrote:
Recently I have been exploring what ImageKit has to offer and by and
large it's all very cool. However I have an IKImageView which is
hooked up in interface builder to "+" and "-" button's in the aim
to zooming IN and OUT of the image. So this is being handled by IB
and not by my own code. However when I build and run the
application, the image zooms but always to a view coordinate that's
at the bottom left. I tried to override this by creating my own
point and setting the zoom factor by using [imageViewOutlet
setImageZoomFactor:[sender floatValue] centerPoint:viewsPoint];
But this doesn't solve the problem. Infact, it appears that my point
is being ignored all together???
Googling for info on IKImageView is pretty sparse. Can anyone
suggest a possible fix?
I went through 2 separate battles with this, trying to get it right.
I finally came to the conclusion, with the agreement of another
developer whom I contacted after I found a post of his regarding this
exact same subject, that much of IK was rushed out the door in an
effort to support iPhone, and the only testing done (well) was
whatever Apple engineers needed it to do at the time.
We ended up rolling our own implementations, and it really wasn't that
hard, nor that much code.
Another huge issue for me was that of live-zooming; there's apparently
no way to turn off the animation effects, and by using IK with live-
zooming, there is this enormously annoying stuttering effect as the
current animation is stopped and a new one is started (at least, I
think that's what it is).
I finally got panning and zooming (from the center point, but
presumably one could tweak it so it zooms from any point) working
perfectly (for my needs, anyway!) using a subclass of NSImageView.
I'll be happy to share this code if you need it, if you contact me off-
list.
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