> On 2 Mar 2015, at 11:44, Ben <ben_cocoa_dev_l...@yahoo.co.uk> wrote: > > Hi list, > > Since NSCell is apparently on the way out, I've been trying to build a new > control I need using views. It's a cut-down spreadsheet-alike grid, similar > to MBTableGrid here: https://github.com/brendand/mbtablegrid > > Unfortunately, I am running into the to-be-expected performance trouble with > keeping a couple of hundred subviews in my control at the same time. It > particularly hurts when scrolling. Stuff I've tried includes: > > - Removing the off-screen views when possible (still leaves about 150 on > screen) > - Keeping a queue of reusable views to avoid allocating new ones > - Attempting to have one view per grid item type and treat it like an NSCell > (i.e., lockFocus into the parent view and draw there) > > Clearly a smooth-scrolling view-based grid is possible - after all, > NSTableView can do it. It's a shame I can't use it for this. > > Does anyone have any suggestions on how to achieve decent drawing/scrolling > performance here?
Can you offer any more explanation as to *what* is slow in your experiments? What is about the number of views that seems to be bogging your control down? _______________________________________________ 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
