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path: root/macros/latex/contrib/tagpdf/tagpdfdocu-patches.sty
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%\RequirePackage[enable-debug]{expl3}[2018/06/14]
\ProvidesExplPackage {tagpdfdocu-patches} {2023-05-16} {0.98g}
 {patches/commands for the tagpdf documentation}
\RequirePackage{etoolbox,xpatch}

%Logos

\ExplSyntaxOn
\DeclareRobustCommand\TeX{
  \leavevmode
  \tag_mc_end_push:
   \tag_struct_begin:n{tag=Span,actualtext=TeX}
    \tagmcbegin{}
     T\kern-.1667em\lower.5ex\hbox{E}\kern-.05emX\@ %changed from -.125em
    \tagmcend
   \tag_struct_end:
  \tag_mc_begin_pop:n{}}
\DeclareRobustCommand{\LaTeX}{
        \leavevmode
        \tag_mc_end_push:
        \tag_struct_begin:n{tag=Span,actualtext=LaTeX}
        \tagmcbegin{}
        L\kern-.25em % %changed from -0.36em
        \sbox\z@ T%
         \vbox to\ht\z@{\hbox{\check@mathfonts
                              \fontsize\sf@size\z@
                              \math@fontsfalse\selectfont
                              A}%
                        \vss}%
        \kern-.1em % %changed from 0.15em
        T\kern-.1667em\lower.5ex\hbox{E}\kern-.05emX\@ %changed from -0.125
        \tagmcend
        \tag_struct_end:
        \tag_mc_begin_pop:n{}    
  }
% textbf

\AddToHook{cmd/textbf/before}
  {\leavevmode\tag_mc_end_push:\tag_struct_begin:n{tag=Strong}\tagmcbegin{}}

\AddToHook{cmd/textbf/after}
  {\tag_mc_end:\tag_struct_end:\tag_mc_begin_pop:n{}}

% emph
\AddToHook{cmd/emph/before}
  {\leavevmode\tag_mc_end_push:\tag_struct_begin:n{tag=Em}\tagmcbegin{}}

\AddToHook{cmd/emph/after}
  {\tag_mc_end:\tag_struct_end:\tag_mc_begin_pop:n{}}
  
% minisec, correct tagging is still unclear.  
\newcommand\minisec[1]{%
    \if@noskipsec \leavevmode \fi
    \par
    \@afterindentfalse
    \if@nobreak
      \everypar{}%
    \else
      \addpenalty\@secpenalty\addvspace{1.5ex}%
    \fi
  {\tagpdfsetup{paratag=H10}\parindent \z@    
   \setlength{\parfillskip}{\z@ plus 1fil}%
    \raggedright\normalfont\bfseries\nobreak
    \nobreak\interlinepenalty \@M #1\par\nobreak%
  }\nobreak
  \@afterheading
}                    

% listings. Unclear how to make it work for the original lstlisting, so we make a 
% copy taglstlisting for now
\DeclareInstance{blockenv}{lstlisting}{display}
{
  env-name       = lstlisting,
  tag-name       = verbatim,
  tag-class      = ,
  tagging-recipe = standard,
  inner-level-counter  = ,
  level-increase = false,
  setup-code     = ,
  block-instance = displayblock ,
  inner-instance = ,
  final-code     =  \tl_set:Nn \l__tag_para_main_tag_tl {codeline}\tagtool{paratag=Code},
}

\lstnewenvironment{taglstlisting}[2][]{%
     \UseInstance{blockenv}{lstlisting} {}
     \lst@TestEOLChar{#2}%
     \lstset{#1}%
     \csname\@lst @SetFirstNumber\endcsname%
   }{%
     \@nobreakfalse
     \csname\@lst @SaveFirstNumber\endcsname%
     \endblockenv
   }
      
      % ======== marginnote ==========
% TODO marginnote has a bug (a \par is missing) so it messes up tagging.
% but currently unneeded as we marked them up as artifacts anyway as they don't contain
% meaningful contents

\NewDocumentCommand\sidenote{m}
 {
   \tag_mc_artifact_group_begin:n{notype}\tagpdfparaOff\marginnote{#1}\tag_mc_artifact_group_end:
 }

\ExplSyntaxOff
% ======== tikzpicture ==========
% TODO this needs some investigation: it messes up the stack if one add paraOff

\AddToHook{env/tikzpicture/begin}{}

%======== tcolorbox ========
% We switch of paratagging at the begin and reenable it locally in before upper.
% the before upper setting is dangerous as it can be overwritten by
% users. So a more stable hook is needed.
% we force also a \par and add a div structure, to avoid clashes with the block
% tagging code. This needs revisting!

\AddToHook{env/tcolorbox/before}{\par\tagstructbegin{tag=Div}}
\AddToHook{env/tcolorbox/begin}{\tagpdfparaOff \tcbset{before upper=\tagpdfparaOn}}
\AddToHook{env/tcolorbox/after}{\par\tagstructend}

% this is not good and only temporary, but it is still unclear how to handle internal lists.
\ExplSyntaxOn
\AddToHook{env/docCommand/before}{\par\tagtool{para=false}\tagstructbegin{tag=Code}\tagmcbegin{}\tag_stop:}
\AddToHook{env/docCommand/after}{\par\tag_start:\tagmcend\tagstructend\tagtool{para=true}}
\ExplSyntaxOff

%\AddToHook{env/docCommand/begin}{\tagpdfparaOff \tcbset{before upper=\tagpdfparaOn}\tagtool{paratag=Code}\tagtool{para-flattened=true}}

% ======= footnote ========
% done in testphase code

% ======= bibliography ========
% biblatex. Creates some empty mc-chunks.
% no internal patches, but redefining begentry/finentry is not safe.
% better hook is needed.


\def\blx@endbibliography{%
  \csuse{blx@endenv@\blx@theenv}%
  \blx@noitem
  \blx@locallabelwidth@finish
  \endgroup
  \blx@bibnote\blx@thepostnote
%  \endgroup
   \expandafter\endgroup\if@endpe\@doendpe\fi
}

% ====== hyperref ========
% this should probably go into tagpdf, but it is related to
% problem of pdf strings and context ....

\AddToHook{package/hyperref/after}
 {%
  \pdfstringdefDisableCommands{%
   \let\tagstructbegin\@gobble
   \let\tagmcbegin\@gobble
   \let\tagmcend\relax
   \let\tagstructend\relax
 }}{}

%====== picture =======

% PAC3 complained that the BBox is missing, so we are cheating for now
% and add a fix size.
\tagpdfsetup
  {
     newattribute =
        {bbox}{/O /Layout /BBox [0 0 100 100]}
  }


%====== floats ========

\tagpdfsetup{add-new-tag=float/Div}
\makeatletter
\def\@xfloat #1[#2]{%
  \@nodocument
  \def \@captype {#1}%
   \def \@fps {#2}%
   \@onelevel@sanitize \@fps
   \def \reserved@b {!}%
   \ifx \reserved@b \@fps
     \@fpsadddefault
   \else
     \ifx \@fps \@empty
       \@fpsadddefault
     \fi
   \fi
   \ifhmode
     \@bsphack
     \tagmcend%end P     
     \@floatpenalty -\@Mii
   \else
     \@floatpenalty-\@Miii
   \fi
  \ifinner
     \@parmoderr\@floatpenalty\z@
  \else
    \@next\@currbox\@freelist
      {%
       \@tempcnta \sixt@@n
       \expandafter \@tfor \expandafter \reserved@a
         \expandafter :\expandafter =\@fps
         \do
          {%
           \if \reserved@a h%
             \ifodd \@tempcnta
             \else
               \advance \@tempcnta \@ne
             \fi
           \else\if \reserved@a t%
             \@setfpsbit \tw@
           \else\if \reserved@a b%
             \@setfpsbit 4%
           \else\if \reserved@a p%
             \@setfpsbit 8%
           \else\if \reserved@a !%
             \ifnum \@tempcnta>15
               \advance\@tempcnta -\sixt@@n\relax
             \fi
           \else
             \@latex@error{Unknown float option `\reserved@a'}%
             {Option `\reserved@a' ignored and `p' used.}%
             \@setfpsbit 8%
           \fi\fi\fi\fi\fi
           }%
       \@tempcntb \csname ftype@\@captype \endcsname
       \multiply \@tempcntb \@xxxii
       \advance \@tempcnta \@tempcntb
       \global \count\@currbox \@tempcnta
       }%
    \@fltovf
  \fi
  \tagstructbegin{tag=float}%float
  \edef\@current@float@struct{\csname tag_get:n\endcsname{struct_num}}%
  \typeout{Float structure: \@current@float@struct}
  \global \setbox\@currbox
    \color@vbox
      \normalcolor
      \vbox \bgroup
        \hsize\columnwidth
        \@parboxrestore
        \@floatboxreset
}%

\def\end@float{%
  \@endfloatbox
  \tagstructend %end div
  \ifnum\@floatpenalty <\z@
    \@largefloatcheck
    \@cons\@currlist\@currbox
    \ifnum\@floatpenalty <-\@Mii
      \penalty -\@Miv
      \@tempdima\prevdepth
      \vbox{}%
      \prevdepth\@tempdima
      \penalty\@floatpenalty
    \else
      \vadjust{\penalty -\@Miv \vbox{}\penalty\@floatpenalty}\@Esphack
      \tagmcbegin{tag=P}%restart P Safe here??
    \fi
  \fi
}

\ExplSyntaxOn
\long\def\@makecaption#1#2{%
  \vskip\abovecaptionskip
  \tagtool{para=false}
  \sbox\@tempboxa{#1:~#2}% 
  \tag_struct_begin:n{tag=Caption}   
  \ifdim \wd\@tempboxa >\hsize
  \tag_struct_begin:n{tag=Lbl}
  \tag_mc_begin:n{}
    #1:~ 
  \tag_mc_end:
  \tag_struct_end:
  \tag_mc_begin:n{}  
    #2\par
  \tag_mc_end:  
  \else
    \global \@minipagefalse
    \hb@xt@\hsize{\hfil
     \tag_struct_begin:n{tag=Lbl}
      \tag_mc_begin:n{}
       #1:~ 
      \tag_mc_end:
     \tag_struct_end:
     \tag_mc_begin:n{}  
      #2\par
     \tag_mc_end:\hfil}%
   \fi
   \tagstructend %caption
  \vskip\belowcaptionskip}
\ExplSyntaxOff



\endinput