On Sat, Jan 24, 2009 at 7:10 PM, Alex Kac <a...@webis.net> wrote: > UIKit/AppKit are not thread-safe meaning we should never do drawing on a > background thread. Yet, if we have say 5 views and for performance reasons > we want the main view to draw first and then the other 4 to draw in the > background like how CoverFlow will draw its icons/images seemingly in the > background, how does one do that?
1) Are you sure you want to use separate views for each item in your CoverFlow-esque interface? You could use layers or cells. 2) Perform all your loading and rendering into an offscreen image and then use performSelectorOnMainThread: to schedule the drawing for the next runloop iteration. You get all the benefits of multithreading the I/O bound portion of your code. Yes, you still have to do the pixel-pushing on the main thread but that's an artifact of the architecture. --Kyle Sluder _______________________________________________ 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
