On Jul 9, 2008, at 11:09 AM, Rick Mann wrote:
My CAD program has a number of "parts" laid out on the canvas at the whim of the user. These parts are interconnected by the user with lines comprised of a series of orthogonal line segments (it's schematic capture CAD). There is one instance of my CALayer subclass for each of these parts, and I'm thinking I'll use one for each connected set of line segments (not sure yet).
Given what it sounds like your content is, I might consider putting the whole canvas on a single or small set of tiled layers (they can be unbounded in size).
Are you suggesting that each of these should subclass CATiledLayer instead (or provide a delegate)? I was setting the transform on the window's (root?) layer. Will that result in tile sublayers redrawing their content?
A tiled layer will trigger redraws when it detects that higher (or lower) resolution content is available. It caches this drawing as well, so you won't get called to redraw just because of a resize of content at that level is already available.
-- David Duncan Apple DTS Animation and Printing [EMAIL PROTECTED] _______________________________________________ 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 [EMAIL PROTECTED]
