8

Is there a way to find out and use the positioning choice (here, top, bottom, page) made for some figure?

Please spend a few minutes to admire 
\edef\mypos{\thepositioningchoicethatwasusedfor{myfig}}
\ifx\mypos h the following image:\fi
\ifx\mypos t \ref{myfig} at the top of page \pageref{myfig}.\fi
\ifx\mypos b \ref{myfig} at the bottom of page \pageref{myfig}.\fi
\ifx\mypos p \ref{myfig} residing on its own page \pageref{myfig}.\fi
\begin{figure}[htbp]
...
\label{myfig}
\end{figure}

I suppose I could play with \zref to make good guesses, but perhaps there is already something ready-made?

Hagen von Eitzen
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  • \label only records @currentlabel (counter value), @currentlabelname (varies), @currentHref (hyperref target) and the page number. The placement options are implemented a bit flags in the float queue, but the hard part would be figuring out which insert corresponds to the given figure. – John Kormylo May 26 '22 at 14:08
  • See also https://tex.stackexchange.com/questions/587069/check-the-condition-for-figure-position-placement-on-that-page and https://tex.stackexchange.com/questions/425892/place-figure-at-bottom-of-this-page-or-the-top-of-the-next-page?r=SearchResults&s=1%7C53.9480 – John Kormylo May 26 '22 at 14:17
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    It may be better to consider wordings of the following kind: "Figure X above/below" or "Figure Y on the previous/following page" or "Figure Z on page z"... rather than highlighting the location on the specific page; figures will have captions, which readers should... well.. read. varioref can help with the wording choices, as can zref's modules. – Werner May 26 '22 at 23:54

1 Answers1

4

Don't forget to run twice.

\documentclass{article}
\usepackage{refcount}

\makeatletter
\newcommand{\savefps}[1]% #1 = label name
{\bgroup
  \edef@currentlabel{\number@tempcnta}%
  \label{#1}%
\egroup}


\newcommand{\checkh}[3]{% #1 = bit flags, #2 = true, #3 = false
  @tempcntb=#1\relax
  \ifodd@tempcntb #2\relax
  \else #3\relax
  \fi}


\newcommand{\checkt}[3]{% #1 = bit flags, #2 = true, #3 = false
  @tempcntb=#1\relax
  \divide@tempcntb by 2
  \ifodd@tempcntb #2\relax
  \else #3\relax
  \fi}


\newcommand{\checkb}[3]{% #1 = bit flags, #2 = true, #3 = false
  @tempcntb=#1\relax
  \divide@tempcntb by 4
  \ifodd@tempcntb #2\relax
  \else #3\relax
  \fi}


\newcommand{\checkp}[3]{% #1 = bit flags, #2 = true, #3 = false
  @tempcntb=#1\relax
  \divide@tempcntb by 8
  \ifodd@tempcntb #2\relax
  \else #3\relax
  \fi}
\makeatother


\begin{document}


\edef\foo{\getrefnumber{test}}% see refcount package
\checkh{\foo}{h}{not h}\par
\checkt{\foo}{t}{not t}\par
\checkb{\foo}{b}{not b}\par
\checkp{\foo}{p}{not p}\par


\begin{figure}[hp]
\savefps{test}
\end{figure}


\end{document}
John Kormylo
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  • 3
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  • 120