I wound up home-growing my own utilities to post-process the PDF as a learning exercise. Took about a day. PDF is a well-documented format and uses well-documented widely-supported compression algorithms.
We actually use iText to create composite PDFs (two or more PDFs placed on top of each other) and our utility to add the spot colors or convert to CMYK programmatically.
I wish I could share some of our code... working on getting approval to open-source some of it.
Ben
George Yi wrote:
I heard Jeremias mentioned Chamelon(Spell) Colour can do the post process but I never tried.
George
-----Original Message----- From: Clay Leeds [mailto:[EMAIL PROTECTED] Sent: Tuesday, October 07, 2003 11:59 AM To: [EMAIL PROTECTED] Subject: Re: CMKY
Ben Galbraith wrote:
FOP does support CMYK JPEGs -- there's a previous thread on this issue that I participated in that should document it fairly well.
XSL-FO may provide support for CMYK through its color space features; haven't studied it enough to grok it, not sure.
FOP doesn't not support CMYK for the elements it renders. However, I've found that post-processing the PDF is actually fairly straight-forward and enables introduction of both spot colors and CMYK colors. This process involves searching through each object in the PDF and replacing the RGB commands (PDF: rg/RG) with CMYK (PDF: k/K) or color space (PDF: cs/CS, scn/SCN) commands. It seemed scary at first, but actually not that bad. If anyone has interest in learning more about this technique, let me know.
Ben
I'm interested in this topic more because I'd like to add this type of information to the FOP web site than for any other reason (my company currently doesn't really care *that* much about color--but I'm interested!). I assume you use some sort of post-processor like iText or something? If you could create some sort of tutorial or something on how to do this, I think it would be *very* useful. Sounds intriguing!
Web Maestro Clay
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