[Openicc] questions to colormanagement and cairo

[Jan-Peter Homann]

hello list

We had a long discussion, how complex colormanagement for printing often 
is.
This is mainly caused by the concept of building a chain:

application->printerdriver->PostScript->PostScript-RIP->devicedriver->printer

As I read about the cairo-project:

-snip-
  Cairo provides a stateful user-level API with capabilities similar to 
the PDF 1.4 imaging model. Cairo provides operations including stroking 
and filling Bezier cubic splines, transforming and compositing 
translucent images, and antialiased text rendering.
-snip-

if the imaging model would be really comparable to PDF 1.4, cairo would 
be very helpful for doing efficient and transparent colormanagement to 
the screen and to the printer.

Reading the documentation, only RGB is described as a valid colorspace, 
no CMYK-colorspace or ICC-colormanagement seems to be supported.

So in the field of color, the imaging model is yet not comparable to PDF 
1.4

Can anybody on the list gives some informations about the 
future-planning for cairo:
- should CMYK-colorspace be supported ?
- should ICC-based colormanagement supported ?

If this would be implemented in cairo, it would be big step for 
colormanagement to the monitor and the printer for every application, 
which uses cairo.

Greetings
:-) Jan-Peter

-

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Jan-Peter Homann ------------- mobile +49 171 54 70 358
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