Tagging order issue when using sidewaystable environment

[pskumaresh06]

I'm encountering an issue with the tagpdf package when using the sidewaystable environment. In my case, the tag order for table content follows the LaTeX input sequence rather than reflecting the table’s actual placement in the PDF output. This causes accessibility tools to read the content out of the intended sequence, affecting logical flow and usability.

Attached is a minimal working example (MWE) and the resulting PDF.

sample.pdf
sample.txt

Could you please advise if there is a way to modify the tag order to follow the visual layout in the PDF?

Thank you very much for your support and for all the work on this valuable package.

[mbertucci47]

Relevant: #112

[u-fischer]

You can try this for now to move the content into the float again (but probably the minipage should not produce structure elements):

\DocumentMetadata{
 lang=en,
 testphase={phase-III,table,title},
 pdfversion=2.0,
 pdfstandard=ua-2,
 pdfstandard=a-4f,
 uncompress
}

\documentclass{article}
\usepackage{rotating}
\makeatletter
\def\@xrotfloat#1[#2]{%
  \@float{#1}[#2]%
  \begin{lrbox}\rot@float@box
  \tagpdfparaOff
  \begin{minipage}\textheight
 }
\makeatother 
\begin{document}

\section{test}
\begin{sidewaystable}
\caption{bla}
\begin{tabular}{ll}
a & b
\end{tabular}
\end{sidewaystable}

\end{document}

[u-fischer]

I think it is better to suspend the tagging for the minipage:

But this code won't work ;-(. Edit: it works if one doesn't forget the \par at the end.

\DocumentMetadata{
 lang=en,
 testphase={phase-III,table,title},
 pdfversion=2.0,
 pdfstandard=ua-2,
 pdfstandard=a-4f,
 uncompress
}

\documentclass{article}
\usepackage{rotating}
\makeatletter
\def\@xrotfloat#1[#2]{%
  \@float{#1}[#2]%
  \begin{lrbox}\rot@float@box
  \SuspendTagging{\minipage}%
  \begin{minipage}\textheight
  \ResumeTagging{\minipage}%
  \UseTaggingSocket{para/restore}% not sure if needed
 }
\def\end@rotfloat{%
   \par %close paragraph for tagging.
   \SuspendTagging{\minipage}% 
   \end{minipage}%
   \ResumeTagging{\minipage}%
   \end{lrbox}%
   \stepcounter{r@tfl@t}%
   \rot@label{RF\ther@tfl@t}%
   \rot@pageref{RF\ther@tfl@t}{\R@@page}%
   \edef\@tempa{Adding sideways \@captype\space on page \R@@page\space}
   \rot@mess@toks\expandafter{\@tempa}
   \wd\rot@float@box\z@
   \ht\rot@float@box\z@
   \dp\rot@float@box\z@
   \vbox to \textheight{%
    \setkeys{Grot}{units=360}%
    \if@rot@twoside
    \else
      \let\R@@page\rot@LR
    \fi
    \ifthenelse{\isodd{\R@@page}}{%
      \if@rot@twoside
        \rot@mess@toks\expandafter{\the\rot@mess@toks (right hand page)}%
      \fi
      \vfill
      \@@line{%
        \hskip\rotFPtop
        \rotatebox{90}{\box\rot@float@box}%
        \hskip\rotFPbot
      }%
    }{%
      \if@rot@twoside
        \rot@mess@toks\expandafter{\the\rot@mess@toks (left hand page)}%
      \fi
      \@@line{%
        \hskip\rotFPbot
        \rotatebox{-90}{\box\rot@float@box}%
        \hskip\rotFPtop
      }%
      \vfill
    }%
    \rot@message{\the\rot@mess@toks}
  }%
  \end@float
} 
\makeatother 
\begin{document}

\section{test}
\begin{sidewaystable}
\caption{bla}
\begin{tabular}{ll}
a & b
\end{tabular}
\end{sidewaystable}

\end{document}