> I have cause to display something like an application badge on > the docktile of my app, but [the regular one won't do] ...
Solution (I think ...): I ended up finding a basically sane way to do this -- just one method, and I did not have to subclass NSView -- but with a large hack for one feature: I was using a pre-existing image for the docktile. That was what I wanted to put the badge on. I created an offscreen window, added an NSImageView the same size as my image to its view hierarchy, then added an instance of NSText as a subview thereof, at an appropriate location. By loading my image into the image view and then drawing the text with a suitable background color, I was able to get a decent "badge". Before doing the drawing, I saved the graphics context and set up a new one with the view, and locked focus on the view; I unlocked and restored later. That setup allowed me to use NSBitmapImageRep:initWithFocusedViewRect: to grab the bits as drawn. I loaded the bitmap into a new instance of NSImage, which I could then assign to my docktile. Now the hack: My original image had some transparent areas, and I could not figure out a reasonable technique for capturing the bitmap drawn by the above procedure without also getting the bits for whatever background lay *behind* the transparent areas of my original image. I don't do a lot of graphics work, so if I am overlooking something obvious I will be very grateful if someone will tell me. My hack took advantage of the fact that my badged image did not have any of a certain color. I ended up setting the window background color to that color, then going through the captured bitmap one pixel at a time, changing all pixels that were approximately that color to transparent. (Actually, I had to make a whole new bitmap and copy or make-transparent; the captured bitmap did not have an alpha plane.) That did work, but it is not a very graceful technique or a very general one. -- Jay Reynolds Freeman --------------------- jay_reynolds_free...@mac.com http://web.mac.com/jay_reynolds_freeman (personal web site) _______________________________________________ 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
