Thanks Matt - I was beginning to suspect that might be the case, but was hoping that there might be some workaround where I could get at the drawn content.
I have done some performance testing and it appears that I'll need to go the route of pure layers for most of it (the animation got a bit jerky with 1,000 layer backed views), but I guess I'll be able to factor out the drawing code and then when I want to print, just create an offscreen view and draw into it and print it. A bit more work, but probably worth it in order to access the power of Core Animation. I'm a little surprised about your statement that there is going to have to be a completely separate codebase for Mac and iOS. I would have thought that if I stick to the core graphics / quartz 2D drawing, that it would be reusable. Sure, I understand that I would have UIViews instead of NSViews etc, but I should be able to reuse large portions of my code - the core data stuff at the back end and core animation and basic drawing code at the front end. But then I haven't tried it in real life yet, so I could be wrong... Regards Gideon On 15/09/2010, at 12:40 AM, Matt Neuburg wrote: > Layers are an efficient way of presenting material on the screen and do not > feature anywhere in the printing story I just told you. A view is not > drawing its layer's sublayers in its drawRect; the layer draws itself (onto > the screen). > > So if you want to portray on paper what the user saw on the screen, you'll > need a view that knows how to draw that in its drawRect. If layers were > involved in what the user saw on the screen, the view will have to know how > to draw what those layers were drawing. > > ... > > As to interoperability of Mac code with iOS code, my experience is that > there isn't any (Mac has NSRect, iOS has CGRect, etc.) so the problem > doesn't arise - you're going to have two separate code bases in any case. m. > _______________________________________________ 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 arch...@mail-archive.com
