On Monday, October 19, 2009, at 05:58PM, "Ben Haller" <bhcocoa...@sticksoftware.com> wrote: >On 19-Oct-09, at 5:27 PM, Dave Keck wrote: > >> Would NSView's -getRectsBeingDrawn:count: help? > > Well, I'm already using it in my own code where appropriate. (Or >actually I'm using -needsToDrawRect:). But the problem is that a >whole bunch of NSTableView cells are getting drawn that never got >invalidated. I would certainly hope that NSTableView is using one of >these minimal-drawing mechanisms, and I assume that it is. > > I think the problem is deeper (based upon what flashes under Quartz >Debug): I think the dirty rects are actually getting consolidated such >that NSTableView no longer has the information it needs to do minimal >drawing.
To test this theory, might it help to use a subclass of NSTableView whose drawRect: method prints the rectangle passed to it, and see what happens when your graph views do and do not do any drawing? And maybe the result of getRectsBeingDrawn:count: as well? I'm curious too if you've tried Greg Guerin's suggestion. --Andy > I could be mistaken about that, though, if the flashes in >Quartz Debug show only the area that Quartz is choosing to blit over, >and not necessarily the area that was considered dirty and redrawn. >(i.e. if it brings over merged areas for efficiency, for some reason; >but that seems unlikely...) > >Ben Haller >Stick Software > >_______________________________________________ > >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/aglee%40mac.com > >This email sent to ag...@mac.com > > _______________________________________________ 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
