I just went ahead and finished this as explained earlier. It was
so easy to do. So, we now have initial support for PDF/X-3:2003 and
improved PDF/A-1b support. Documentation will follow shortly.

I learned a lot about color handling while implementing this stuff. I
think that having all standard colors properly defined as sRGB in PDF is
a step further to ensure that FOP doesn't break the color intention from
XSL-FO when it generates PDF (uncalibrated, device-specific RGB vs. sRGB).
Together with the new possibility to specify an output profile, the
colors should now be properly mapped to the target device even if it's a
CMYK device (Confirmation from a professional pending, of course). :-)

On 14.06.2006 10:29:21 Jeremias Maerki wrote:
> Max,
> I know you're interested in better color handling in FOP. I'm currently
> working on implementing some level of PDF/X-3:2003 support for FOP.
> PDF/X-3:2003 because it can be used together with PDF/A-1. There's a
> mean little detail in the PDF/X spec that says the output intent must
> use an "Output Device Profile" which sRGB isn't (It's a Display Profile).
> Since all Output Device Profiles I found so far are CMYK profiles I
> obviously need to look into this a little. What I'm planning is to
> properly map XSL-FO's sRGB values into proper sRGB color values in the
> PDF (by mapping DefaultRGB into sRGB). That way I can avoid converting
> colors early and still indirectly set up the color transformation from
> sRGB to the target CMYK profile.
> What I'd like to know is whether you've already done some work in the
> CMYK area. Not that we duplicate our efforts. 

Jeremias Maerki

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