On Jan 6, 2011, at 10:28 AM, James Bucanek wrote: > Greetings, > > The is probably more of a Carbon question than a Cocoa question, but since > the problem starts with CALayer, I'll start here first.
Not really since nothing here involves Carbon :). > So how can I get my text to draw as smoothly as the Finder? Subpixel antialiasing requires a background to antialias against, and your layer is probably transparent. If you supply a background (by drawing one into the context first) then you should get subpixel antialiasing, assuming it is otherwise enabled. > Searching the forums I found a reference to "sub-pixel smoothing". The > solution was to fix some properties of the CGBitmapContext being drawn into, > but CALayer doesn't (as far as I can tell) give you any control over the > CGContext used when drawing the content of the layer. There is actually a way to gain control over the context that is being drawn into, although this is generally not necessary (and can result in inefficiencies in some cases). Basically you can override -displayLayer: (in your layer's delegate) or -display (in a layer subclass) to create your own bitmap context, call -drawInContext: with that context, then create an image from the context and assign it to the layer's contents property. It isn't a generally useful technique, but if you have a case where you want to preserve previous content when redrawing the layer this is one way to do so. -- David Duncan _______________________________________________ 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
