Re: Printing with No Color Management (again)
Re: Printing with No Color Management (again)
- Subject: Re: Printing with No Color Management (again)
- From: Graeme Gill <email@hidden>
- Date: Thu, 28 Apr 2011 13:54:35 +1000
Chris Murphy wrote:
I guess the other approach would be to see about writing ones own PDF into the print
queue, bypassing the whole mess.
There are a bunch of APIs that capture driver dialog settings that get baked into the
PDF print spool file and also there's 2nd "sidecar" like file that contains other
metadata for theprinting system. So directly inserting a PDF minus all of this other
stuff I don't think would be straightforward.
More straightforward would be to yank cgpdftoraster which calls Quartz2D which is
responsible for rasterizing and calling ColorSync, for something that just rasterizes
and never calls ColorSync. CUPS is designed for swapping out raster filters so someone
could do it, but would it survive OS updates? What else would break? What other things
are you stepping on since Epson, HP, Canon drivers all currently depend on it. I'm not
sure. But I have thought about it.
It would be a trade-off of risk. If the failure mode is not to work at all rather
than producing the wrong color, it might be a reasonable choice though. The trick
would be using a replacement for cgpdftoraster for just for the test charts,
not a general replacement. That doesn't help application color matching though.
Graeme Gill.
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