I have an NSCollectionView with really simple (i.e. no tracking areas) item views.
In a test case of about 1500 items, scrolling gets unacceptably choppy. I've tracked this down to calls to a private method, -[NSView _updateTrackingAreas]. While scrolling, _updateTrackingAreas is called for my item views each time they move a few pixels, even though they have no tracking areas. _updateTrackingAreas in turn calls -[NSNotificationCenter postNotificationName:object:userInfo:], which is what is actually taking up all the time. Stubbing out _updateTrackingAreas improves the scrolling dramatically, but I'd like to find a sanctioned way to at least delay the recalculation of tracking areas until scrolling is done. Any pointers? _murat _______________________________________________ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
