[cairo] Spot colors (and CMYK)

Kai-Uwe Behrmann ku.b at gmx.de
Mon Feb 15 12:53:38 PST 2010

Am 15.02.10, 12:38 -0400 schrieb cu:
> 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,

PDF is a vector format, which is highly colour management related.

> 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 :) )

The GenericRGB is really misleading. But they decided only to go for that 
because of such mind like you exist, which want to inadequately bypass 
colour management. You seems to be full of energy to keep colour 
unmanagement alive. By reason or out of habit?

osX engourages colour management. Its more work on osX to circumvent 
colour management.
Thats a consequent decission for a platform, which cares about colour.

> 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.

Thats stuff a system should do and not burden to users of the system.

kind regards
Kai-Uwe Behrmann
developing for colour management 
www.behrmann.name + www.oyranos.org

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