On Jul 11, 2016, at 7:59 PM, Zdenek Wagner
<zdenek.wag...@gmail.com<mailto:zdenek.wag...@gmail.com>> wrote:
Especially this one, it depends on a lot of files. I wanted to extract ideas
how to build the XMP, how to include the ICC but I gave up.
XMP is done via a template file; e.g. pdfx.xmp or pdfa.xmp .
There are many places where information can be supplied, via macros
such as \xmp@Subject and \xmp@Author .
Much of the pdfx package is about supplying values for these, in UTF8
encoding.
I know, writing XMP is easy, I do not know how to include it. I do not like to
use hyperref for a document that will only be pronted and never will be online.
Using pdfTeX it is done like this in pdfx.sty :
\def\pdfx@numcoords{/N 4}% for CMYK colors
\immediate\pdfobj stream attr{\pdfx@numcoords} file %
{\pdfx@CMYKcolorprofiledir\pdfx@cmyk@profile}%
\edef\OBJ@CMYK{\the\pdflastobj\space 0 R}%
Then that object reference in \OBJ@CMYK is required for the OutputIntent .
viz.
\def\pdfx@outintent@dict{%
/Type/OutputIntent
/S/GTS_PDFX^^J
/OutputCondition (\pdfx@cmyk@intent)^^J
/OutputConditionIdentifier (\pdfx@cmyk@identifier)^^J
/Info(\pdfx@cmyk@intent)^^J
/RegistryName(\pdfx@cmyk@registry)
/DestOutputProfile \OBJ@CMYK
}%
which is linked to the PDF Catalog via:
\immediate\pdfobj{<<\pdfx@outintent@dict>>}%
\edef\pdfx@outintents{[\the\pdflastobj\space 0 R]}%
\def\pdfx@outcatalog@dict{%
/ViewerPreferences <</DisplayDocTitle true >>
/OutputIntents \pdfx@outintents % needs appropriate expansion
}%
\pdfcatalog{\pdfx@outcatalog@dict}%
Of course you need to supply all the information for the macros:
\pdfx@cmyk@….
and \pdfx@CMYKcolorprofiledir (possibly empty).
Using XeTeX there is similar coding using \special s,
including symbolic names for object references.
e.g.
\def\OBJ@CMYK{@colorprofile}%
\special{pdf:fstream @colorprofile %
(\pdfx@CMYKcolorprofiledir\pdfx@cmyk@profile) <<\pdfx@numcoords >>}
\def\pdfx@outintents{ @outintentsarray }%
\def\pdfx@outintentref{ @outintent@dict }%
\immediate\special{pdf:obj \pdfx@outintentref << \pdfx@outintent@dict >>}
\immediate\special{pdf:obj \pdfx@outintents [ ]}%
\immediate\special{pdf:put \pdfx@outintents \pdfx@outintent@dict}%
with \pdfcatalog defined appropriately:
\def\pdfx@catalog@xetex#1{\special{pdf:put @catalog <<#1>>}}
You should be able to put all the pieces together now.
Cheers,
Ross
Zdeněk Wagner
http://ttsm.icpf.cas.cz/team/wagner.shtml
http://icebearsoft.euweb.cz<http://icebearsoft.euweb.cz/>
Dr Ross Moore
Mathematics Dept | Level 2, S2.638 AHH
Macquarie University, NSW 2109, Australia
T: +61 2 9850 8955 | F: +61 2 9850 8114<tel:%2B61%202%209850%209695>
M:+61 407 288 255<tel:%2B61%20409%20125%20670> | E:
ross.mo...@mq.edu.au<mailto:rick.min...@mq.edu.au>
http://www.maths.mq.edu.au<http://mq.edu.au/>
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