[cairo] API Shakeup: cairo_set_rgb_color

[Keith Packard]

Around 17 o'clock on Feb 15, Bill Spitzak wrote:

> Actually, since cairo_set_source_rgba takes double as the type of 
> parameter, you can do this with the other interface as well by setting 
> r,g,or b to a value greater than 1.0.

If 'a' is zero, you cannot usefully set r, g or b to anything other than 
zero.  The extra API really is required to get the desired functionality.

-keith


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