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Applying a transparent color over an image

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Applying a transparent color over an image

Subject: Applying a transparent color over an image
From: Duncan Campbell <email@hidden>
Date: Thu, 14 Apr 2005 18:23:02 +1000

Hey folks.

I've developed my own custom tabs (for an editor I'm building). My tabs (NSView subclasses) have 3 images: 1 for unselected, 1 for mouse-over (using a tracking-rect) and 1 for selected.

Since the 3 images are the same - just different colors - I was thinking it would likely be much more efficient to simple apply some kind of alpha-color transparency over the base unselected image (Note the images are not solid colors - so using something like [colorWithCalibratedWhite:] isn't going to work).

I guess I'm looking for something like: [imageWithCalibratedWhite: alpha:] or similar...

Can anyone suggest a way of doing this?

Many thx,

D.

---------------------------------------------------------------
Duncan Campbell
http://www.duncanandsarah.com/duncan
---------------------------------------------------------------

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