> On 28 Sep 2015, at 17:08, Jens Alfke <j...@mooseyard.com> wrote: > > >> On Sep 28, 2015, at 1:41 AM, Ben <ben_cocoa_dev_l...@yahoo.co.uk >> <mailto:ben_cocoa_dev_l...@yahoo.co.uk>> wrote: >> >> When scrolling vertically, there could be up to 100,000 strings to be drawn, >> horizontally, much fewer, less than 10,000. I'm assuming a maximum grid size >> of 100 columns and 10k rows. This should be a worst-case assumption. > > As various people have said, there is no reason to draw any text that’s > outside the dirtyRect passed to your -drawRect: call. So you never need to > draw 100k strings at once. I’m confused by your statements in this thread — > you do say that you abide by the dirtyRect, so why are you drawing so many > strings? > >> Unfortunately NSTableView doesn't offer the type of interactions I want. I >> have filed a radar requesting enhancements. > > It’s very customizable. What’s missing for you?
I am sorry for the poor explanations. I hope this clears up my phrasing: I am only drawing the area requested by the dirtyRect parameter. I mention the large number of strings since when scrolling I am being asked to draw a larger number of dirtyRect blocks in quick succession. This means a correspondingly larger number of strings to be drawn. True, they are not all in the same drawRect call, but in sufficiently close proximity that I thought speeding up the largest consumer of cpu time (ie. string drawing) would help the improve the scroll lag. The biggest thing missing for me in NSTableView is single-cell selection and highlighting. There was also a drawing bug which I filed a radar for. — Thank you all for the suggestions though, I will try each of them. _______________________________________________ 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
