Thanks. That's a good suggestion. I just realized that the thing was trying to animate and was interfering with my attempts to manually draw. I saw "removeAllAnimations" and tried it to solved my immediate problem. I'll see if I can use what you mentioned instead. I'm not currently using CALayers for animation (yes, eventually), but just wanted a layering system that will hopefully let me to stack drawing layers, annotation, etc. along with live video layers and other things.
> Hi Gordon, > > I'm not sure what you really want to do is -removeAllAnimations. I > suspect that you probably want to temporarily disable animation within > the scope of a CATransaction. Take a look at the code found here: > > <http://developer.apple.com/documentation/Cocoa/Conceptual/CoreAnimation_guide > /Articles/Transactions.html#//apple_ref/doc/uid/TP40006096-SW9 >> > > later, > > douglas The view is a main presentation view that is (optionally) in a scroll view. I started out using the clipView, a la the Sketch example. Then at someone else's suggestion I switched to scaling my main view instead. Either way works great for a non-layer-backed view. The popup in the scroll bar ranges from 10% to 1600%. Currently, I'm just changing the view's frame and then resetting the bounds to the original size. I also tried "scaleUnitSquareToSize". It worked, but produced no different result with CALayers. I will also need to be able to change the bounds when the user changes the presentation dimmensions, e.g., 640 x 480 to/from 1024 x 786. All that worked until I tried CALayers. If I could figure out what changing the scroller size does, maybe I could make it do the same thing to adjust properly when the user changes the scale. > What exactly are you doing to scale your views? layers? > > When scaling layers within a non-scrolling view, I have used the > following method: > > [targetLayer setValue: [NSNumber numverWithFloat: newScaleValue] > forKeyPath: @"scale"]; > > Usually, I place a statement like this in an action method that is > targetted by a slider and it produces no-brainer results > > When I needed to scale a layer hosted by a view that was enclosed in a > NSScrollview, i used the following method: > > clipView = [targetScrollView contentView]; > ` newBoundsSize = NSMakeSize( NSWidth( [clipView frame] ) / > newScaleValue, NSHeight( [clipView frame]) / newScaleValue); > [clipView setBoundsSize: newBoundsSize]; > > This works for the most part. The scaling is sluggish and sometimes > the view doesn't redraw properly until a scroller is movedc. > > Have you tried both of these methods? Other methods? _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
