On 16 Jul '08, at 8:22 AM, chaitanya pandit wrote:

One idea would be to create an NSBezierPath with the shape of the chat bubble, once u have it you can use the CTGradient calss's [gradient fillBezierPath] method to fill it with an aqua look.
The CTGradient project is here: 
http://blog.oofn.net/2006/01/15/gradients-in-cocoa/

There's an NSGradient class in 10.5.

I haven't tried this, but I don't think a plain gradient would look very good. The iChat balloons are more complicated than that; the artwork was done in Photoshop using some of those fancy layer effects that the Apple HI team can probably do in their sleep.

Once you have a template image like that, it's easy to stretch it to fill the balloon bounds using NSDrawNinePartImage.

—Jens

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