[cairo] Spot colors (and CMYK)

cu cairouser at yahoo.com
Mon Feb 15 08:38:53 PST 2010

Cairo is a vector drawing library, so an example of a photo that looks
different is not relevant, in my opinion. As far as vector drawing goes,
I suspect that many applications (such us ours, for example) don't care
about the differences caused by different platforms and display profiles
etc.  (As an aside, it took us quite a bit of work to turn off the
automatic OSX color profile adjustment, suffice it to say they don't
really mean "generic" when they say GenericRGB :) )

Others that do care, can and should deal with this, most likely by
adjusting a palette they use as an input to vector drawing, ahead of
time. This isn't a very difficult operation. Once performed, it should
result in visually similar result on any given platform.

Kai-Uwe Behrmann wrote:
> Thats all no issue for a black and white word processor, as typical no one 
> will simulate paper white in screen just to print black text ;-)
> But for skin tones in a family photo album it is a problem: "Grand daddy 
> looks on your monitor better then on mine."
> To solve that brokeness, application developers need messy extra code for 
> each OS they want to port to and avoid a large part of cairo APIs.
> Thats in my opinion neighter easy nor the "right choice".
> kind regards
> Kai-Uwe Behrmann

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