Hey guys I was implementing a customised NSCell into NSTableView and it leaves dirty traces while scrolling up bit by bit.
The cell was subclassed from NSTextFieldCell, using drawInteriorWithFrame: and coordinates to locate and place elements inside (drawInRect for NSStrings whatever). The NSTableView calls cells via dataCellForTableColumn:row: and passes the current cell frame boundary NSRect to cells for drawing. It looked all well and neat except for sometimes leaving dirty traces while scrolling up slowly bit by bit. The capture below sketches the problem as dirty bits are lying under the first "retweet by retweet by" as a result of scrolling up. [ Image: http://img89.imageshack.us/img89/3644/20101120060934.png ] A call to NSTableView setNeedsDisplay:YES will always solve the problem however too inefficient. Can anyone please suggest if there's anything might be done to fix that up? kjoika _______________________________________________ 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
