[XeTeX] Σχετ: Plain XeTeX, pdftitle, pdfinfo

[Ross Moore]

On Jul 11, 2016, at 7:59 PM, Zdenek Wagner <zdenek.wagner at gmail.com<mailto:zdenek.wagner at 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 at Subject  and  \xmp at 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 at numcoords{/N 4}% for CMYK colors
   \immediate\pdfobj stream attr{\pdfx at numcoords} file %
     {\pdfx at CMYKcolorprofiledir\pdfx at cmyk@profile}%
   \edef\OBJ at CMYK{\the\pdflastobj\space 0 R}%

Then that object reference in \OBJ at CMYK  is required for the  OutputIntent .
viz.

  \def\pdfx at outintent@dict{%
    /Type/OutputIntent
    /S/GTS_PDFX^^J
    /OutputCondition (\pdfx at cmyk@intent)^^J
    /OutputConditionIdentifier (\pdfx at cmyk@identifier)^^J
    /Info(\pdfx at cmyk@intent)^^J
    /RegistryName(\pdfx at cmyk@registry)
    /DestOutputProfile \OBJ at CMYK
   }%

which is linked to the PDF Catalog via:

 \immediate\pdfobj{<<\pdfx at outintent@dict>>}%
  \edef\pdfx at outintents{[\the\pdflastobj\space 0 R]}%
 \def\pdfx at outcatalog@dict{%
  /ViewerPreferences <</DisplayDocTitle true >>
  /OutputIntents \pdfx at outintents % needs appropriate expansion
 }%
 \pdfcatalog{\pdfx at outcatalog@dict}%


Of course you need to supply all the information for the macros:
  \pdfx at cmyk@….
and  \pdfx at CMYKcolorprofiledir  (possibly empty).


Using XeTeX there is similar coding using  \special s,
including symbolic names for object references.
e.g.

    \def\OBJ at CMYK{@colorprofile}%
    \special{pdf:fstream @colorprofile %
      (\pdfx at CMYKcolorprofiledir\pdfx at cmyk@profile) <<\pdfx at numcoords >>}
   \def\pdfx at outintents{ @outintentsarray }%
   \def\pdfx at outintentref{ @outintent at dict }%
   \immediate\special{pdf:obj \pdfx at outintentref << \pdfx at outintent@dict >>}
   \immediate\special{pdf:obj \pdfx at outintents [ ]}%
   \immediate\special{pdf:put \pdfx at outintents \pdfx at outintent@dict}%

with \pdfcatalog defined appropriately:

 \def\pdfx at 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.moore at mq.edu.au<mailto:rick.minter at mq.edu.au>

http://www.maths.mq.edu.au<http://mq.edu.au/>


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