On Jul 23, 2010, at 3:53 AM, Bernard Knaepen wrote: > I need to draw an NSAttributedString over an image. The characters of the > string might have different sizes, fonts and colors. > > I am currently using the drawAtPoint method but I would like to specify a > global opacity (transparency) to draw the string. Is there a way to do this > or should I scan the whole string and make the changes to each character > color individually by using the colorWithAlphaComponent method?
Something like this, perhaps: NSGraphicsContext* nsContext = [NSGraphicsContext currentContent]; CGContextRef cgContext = (CGContextRef)[nsContext graphicsPort]; [nsContext saveGraphicsState]; [nsContext setCompositingOperation:NSCompositeSourceOver]; CGContextSetAlpha(cgContext, 0.5); [theString drawAtPoint:thePoint]; [nsContext restoreGraphicsState]; _______________________________________________ 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
