What if that color is part of a transparency operation?
What if that color is overprinted? Or knocked out?
and you probably need to find all the places that content can exist in a PDF,
which isn't just a single stream.
Leonard
From: Jon Wu <j...@wuservices.com<mailto:j...@wuservices.com>>
Reply-To: Post here
<itext-questions@lists.sourceforge.net<mailto:itext-questions@lists.sourceforge.net>>
Date: Wednesday, January 15, 2014 11:49 AM
To: Post here
<itext-questions@lists.sourceforge.net<mailto:itext-questions@lists.sourceforge.net>>
Subject: Re: [iText-questions] Changing colors of graphics and text in imported
PDFs
Thanks Leonard.
What if all I'm doing is a few color replacements? Could I just find something
like 0 0 0 1 k in the stream (assuming that's there) and then replace it with 4
numbers for my predetermined CMYK values or are there other intricacies that
would cause issues?
On Wed, Jan 15, 2014 at 1:59 AM, Leonard Rosenthol
<lrose...@adobe.com<mailto:lrose...@adobe.com>> wrote:
Can you do this with iText? Yes. HOWEVER it is going to require you to have a
VERY DEEP understanding of PDF and Color Management/Science.
Leonard
From: Jon Wu <j...@wuservices.com<mailto:j...@wuservices.com>>
Reply-To: Post here
<itext-questions@lists.sourceforge.net<mailto:itext-questions@lists.sourceforge.net>>
Date: Wednesday, January 15, 2014 10:24 AM
To: Post here
<itext-questions@lists.sourceforge.net<mailto:itext-questions@lists.sourceforge.net>>
Subject: [iText-questions] Changing colors of graphics and text in imported PDFs
Hi,
I'm trying to find a way to manipulate the colors in existing PDFs. I saw some
similar questions asked 6 or more years ago and I'm not sure if things have
changed.
Imagine I have a design that started in Adobe Illustrator with text and
graphics and there are 5 distinct colors used in the design such as a color
palette like ones you see on https://kuler.adobe.com/. The goal is to be able
to identify the 5 colors in the PDF and replace with with entirely new CMYK
colors as if I can just change the palette of the design on the fly from code.
If it helps, I could make all 5 of the initial colors anything such as a named
spot color.
Can I (or do I want to) do this with iText?
If not, what about string manipulation / search and replace?
Or I see in past posts there was some mention of other programs to do this but
some examples would be helpful is iText isn't the right tool for this purpose.
Thanks!
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_______________________________________________
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iText(R) is a registered trademark of 1T3XT BVBA.
Many questions posted to this list can (and will) be answered with a reference
to the iText book: http://www.itextpdf.com/book/
Please check the keywords list before you ask for examples:
http://itextpdf.com/themes/keywords.php
