Use hyperxmp instead of pdfx, and CMYK outputindent for both PDF/A and PDF/X

liuthesis.cls

@@ -118,6 +118,7 @@
 \createvariable{examiner}
 \createvariable{titleenglish}
 \createvariable{titleswedish}
+\renewcommand{\@title}{\ifx\@titleenglish\@empty\@titleswedish\else\@titleenglish\fi}
 \createvariable{keywords}
 \createvariable{keywordsswedish}
 \createvariable{department}
@@ -304,24 +305,78 @@
 \PassOptionsToPackage{svgnames}{xcolor}
 \PassOptionsToPackage{pdfusetitle}{hyperref}
 %%%%%%%%%% PDF/A support
-%
-\ifxetex
-\let\pdfcreationdate=\creationdate
-\fi
 % https://tex.stackexchange.com/questions/474197/pdfx-incomplete-cidset-in-some-fonts/474336#474336
 \ifluatex
 \pdfvariable omitcidset=1
 \fi
-\RequirePackage[a-2b]{pdfx}
+
+%\pdfobjcompresslevel=0 %uncomment for Texlive
+\usepackage[pdfa,bookmarks=false]{hyperref} %bookmarks are incompatible with PDF/X<6
+\usepackage{hyperxmp}[2020/06/15]
+\usepackage{cmap}
+\usepackage[cmyk,hyperref]{xcolor}
+
+\ifxetex
+  \def\OBJ@CMYK{@colorprofile}%
+  \immediate\special{pdf:fstream \OBJ@CMYK (FOGRA39L_coated.icc) <</N 4>>}%
+  \def\pdfcatalog#1{\special{pdf:put @catalog <<#1>>}}
+  \def\pdfpageattr#1{\special{pdf:put @thispage <<#1>>}}
+\else
+  \immediate\pdfobj stream attr{/N 4} file {FOGRA39L_coated.icc}%
+  \edef\OBJ@CMYK{\the\pdflastobj\space 0 R}%
+\fi
+\pdfcatalog{%
+  /OutputIntents [ <<
+    /Type /OutputIntent
+    /S/GTS_PDFA1
+    /DestOutputProfile \OBJ@CMYK
+    /OutputConditionIdentifier (Coated FOGRA39)
+    /Info(FOGRA39L)
+    /OutputCondition(Offset printing, according to ISO 12647-2:2004/Amd 1, OFCOM, paper type 1 or 2 = coated art, 115 g/m2, tone value increase curves A (CMY) and B (K))
+    /RegistryName(http://www.fogra.org)
+  >>
+  <<
+    /Type /OutputIntent
+    /S/GTS_PDFX
+    /DestOutputProfile \OBJ@CMYK
+    /OutputConditionIdentifier (Coated FOGRA39)
+    /Info(FOGRA39L)
+    /OutputCondition(Offset printing, according to ISO 12647-2:2004/Amd 1, OFCOM, paper type 1 or 2 = coated art, 115 g/m2, tone value increase curves A (CMY) and B (K))
+    /RegistryName(http://www.fogra.org)
+  >> ]
+}
+
+% Bugfix of hyperref to produce CMYK links
+\let\HyColor@HyperrefBorderColor\HyColor@XZeroOneThreeFour
+
+%we need to tell PDF/X the final format of the paper. This needs adjustment if you want graphics on the page border, called bleeding
+\@tempdima=0.99626400996264009962\paperwidth
+\edef\boxwd{\strip@pt\@tempdima}
+\@tempdima=0.99626400996264009962\paperheight
+\edef\boxht{\strip@pt\@tempdima}
+
+\edef\next{%
+  \protect\pdfpageattr{
+    /TrimBox[0.0 0.0 \boxwd\space \boxht]
+  }%
+}
+\next
+
+\hypersetup{%
+    pdfdisplaydoctitle=true,
+    pdftrapped=False,
+    pdfapart=2,
+    pdfaconformance=B,
+    pdfuapart=1,
+    pdfxstandard={PDF/X-4},
+}
+
 %%%%%%%%%% end PDF/A support
-\RequirePackage{color}
-\RequirePackage{xcolor}
 \RequirePackage{pdfpages}
 \RequirePackage{tikz}
 \RequirePackage{pbox}
 \RequirePackage{ifthen}
 \RequirePackage{geometry}
-\RequirePackage{hyperref}
 \RequirePackage{amssymb}
 \RequirePackage{amsmath}
 \RequirePackage{etoolbox}
@@ -619,7 +674,7 @@
       \liuthesisabstract
     \end{justify}
     \vfill
-    \includegraphics[width=35mm]{liu_primary_black_en_rgb}
+    \includegraphics[width=35mm]{liu_primary_black_en}
     \\[15mm]
   \@division\\
   \@departmentenglish\\
@@ -659,7 +714,7 @@
     \begin{flushleft}
       Nyckelord: \@keywordsswedish\\[3mm]
     \end{flushleft}
-    \includegraphics[width=35mm]{liu_primary_black_sv_rgb}\\
+    \includegraphics[width=35mm]{liu_primary_black_sv}\\
     \@department\\
     Linköpings universitet, 581 83 Linköping\\[5mm]
   ISBN \@isbnprint{} (tryckt)\hspace{15mm} ISBN \@isbnpdf{} (PDF)\\
@@ -691,7 +746,7 @@
   \begin{flushleft}
     Keywords: \@keywords\\[3mm]
   \end{flushleft}
-  \includegraphics[width=35mm]{liu_primary_black_en_rgb} \\
+  \includegraphics[width=35mm]{liu_primary_black_en} \\
     \@departmentenglish\\
    Linköping University, SE--581 83 Linköping, Sweden\\[5mm]
   ISBN \@isbnprint{} (print)\hspace{15mm} ISBN \@isbnpdf{} (PDF)\\
@@ -765,7 +820,7 @@
 \vfill{}
 \begin{textblock*}{\textwidth}(2cm,\paperheight-4cm)
   \swedishenglish{\gdef\@langlogo{sv}}{\gdef\@langlogo{en}}
-  \parbox{0.4\textwidth}{\includegraphics[width=85mm]{liu_primary_black_\@langlogo_rgb}}%
+  \parbox{0.4\textwidth}{\includegraphics[width=85mm]{liu_primary_black_\@langlogo}}%
   \hspace*{32mm}
   \parbox{0.5\textwidth}{\raggedleft%
     \vspace*{4mm}
@@ -793,7 +848,7 @@
      {\Large\bfseries\@author}\\
      \vfill
     \swedishenglish{\gdef\@langlogo{sv}}{\gdef\@langlogo{en}}
-    \includegraphics[width=60mm]{liu_primary_black_\@langlogo_rgb}
+    \includegraphics[width=60mm]{liu_primary_black_\@langlogo}
    \\[12mm]
      {\footnotesize
      \swedishenglish{%

pdftopdfa

+#! /usr/bin/env bash
+filename=$(basename $1 .pdf)
+gs -dPDFA -dBATCH -dNOPAUSE \
+  -sColorConversionStrategy=UseDeviceIndependentColor \
+  -sDEVICE=pdfwrite -dPDFACompatibilityPolicy=2       \
+  -sOutputFile=$filename-pdfa.pdf \
+  $1