我对在 Beamer 中制作图表列表很感兴趣，这样我就不必在图片说明中引用每张图片，还可以节省幻灯片空间。以下示例（根据用户 Marco Daniel 和 Carsten 提供）几乎完美地满足了我的要求；我可以将源作为可选参数放在标题中，并将其打印在 LOF 上，但不打印在带有图表的框架上。但是我发现，在分成多张幻灯片的框架中，它们在 LOF 中打印多次（每张幻灯片一次）所有图表。
\documentclass{beamer}
\usetheme{PaloAlto}
\usepackage{ifthen}
\makeatletter
\AtEndDocument{%
\clearpage
\beamer@tempcount=\c@page\advance\beamer@tempcount by -1%
\if@filesw
\newwrite\tf@lof
\immediate\openout\tf@lof\jobname.lof\relax
\newwrite\tf@lot
\immediate\openout\tf@lot\jobname.lot\relax
\fi
}
\long\def\beamer@makecaption#1#2#3#4{%
\def\insertcaptionname{\csname#1name\endcsname}%
\def\insertcaptionnumber{\csname the#1\endcsname}%
\edef\insertframenumber{\theframenumber}%
\ifthenelse{\equal{#3}{\empty}}{%
\def\insertlistcaption{#2}%
}{%
\def\insertlistcaption{#3}%
}
\def\insertsource{#4}%
\def\insertcaption{#2}%
\ifthenelse{\equal{#1}{figure}}{%
\addtocontents{lof}
{\protect\listoffigureformat{\insertcaptionnumber}{\insertlistcaption}
{\insertframenumber}{\insertsource}}{}{}%
}{}
\ifthenelse{\equal{#1}{table}}{%
\addtocontents{lot}{\protect\listoftableformat{\insertcaptionnumber}
{\insertlistcaption}{\insertframenumber}}{}{}%
}{}
\nobreak\vskip\abovecaptionskip\nobreak
\sbox\@tempboxa{\usebeamertemplate**{caption}}%
\ifdim \wd\@tempboxa >\hsize
\usebeamertemplate**{caption}\par
\else
\global \@minipagefalse
\hb@xt@\hsize{\hfil\box\@tempboxa\hfil}%
\fi
\nobreak\vskip\belowcaptionskip\nobreak%
}
\def\listoffigureformat#1#2#3#4{%
\makebox[2ex][r]{#1}%
\hspace{1ex}%
{\usebeamercolor[fg]{bibliography entry author} #2}%
\ifthenelse{\equal{#4}{\empty}}{}{ -- #4}%
\dotfill%
\makebox[2ex][r]{#3}\par%
}
\def\listoffigures{%
\setlength{\leftskip}{3ex}
\setlength{\parindent}{-3ex}
\@starttoc{lof}%
}
\def\listoftableformat#1#2#3{\makebox[2ex][r]
{#1}\hspace{1ex}#2\dotfill\makebox[2ex][r]{#3}\par}
\def\listoftables{%
\setlength{\leftskip}{3ex}
\setlength{\parindent}{-3ex}
\@starttoc{lot}%
}
\long\def\@caption#1[#2]#3{
\par\nobreak
\begingroup
\@parboxrestore
\if@minipage
\@setminipage
\fi
\beamer@makecaption{#1}{\ignorespaces #3}{\ignorespaces #3}
{\ignorespaces #2}\par\nobreak
\endgroup}
\makeatother
\begin{document}
\begin{frame}{Frame}
\begin{figure}
\mbox{A}
\caption[citation]{The letter 'A'}
\end{figure}
\begin{itemize}
\item<1-> an item
\item<2-> another item
\item<3-> a third item
\end{itemize}
\end{frame}
\begin{frame}{List of Figures}
\listoffigures
\end{frame}
\end{document}
编写一个测试来确定某个条目是否已存在于图形列表中，并且如果旧条目与新条目匹配则不添加新条目，这似乎很简单，但是我对编码还很陌生，不知道如何在 LaTeX 中解决这个问题。有人能帮帮我吗？
答案1
快速破解：
\documentclass{beamer}
\usetheme{PaloAlto}
\usepackage{ifthen}
\makeatletter
\AtEndDocument{%
\clearpage
\beamer@tempcount=\c@page\advance\beamer@tempcount by -1%
\if@filesw
\newwrite\tf@lof
\immediate\openout\tf@lof\jobname.lof\relax
\newwrite\tf@lot
\immediate\openout\tf@lot\jobname.lot\relax
\fi
}
\long\def\beamer@makecaption#1#2#3#4{%
\def\insertcaptionname{\csname#1name\endcsname}%
\def\insertcaptionnumber{\csname the#1\endcsname}%
\edef\insertframenumber{\theframenumber}%
\ifthenelse{\equal{#3}{\empty}}{%
\def\insertlistcaption{#2}%
}{%
\def\insertlistcaption{#3}%
}
\def\insertsource{#4}%
\def\insertcaption{#2}%
\ifthenelse{\equal{#1}{figure}}{%
\only<+>{
\addtocontents{lof}
{\protect\listoffigureformat{\insertcaptionnumber}{\insertlistcaption}
{\insertframenumber}{\insertsource}}{}{}%
}}{}
\ifthenelse{\equal{#1}{table}}{%
\addtocontents{lot}{\protect\listoftableformat{\insertcaptionnumber}
{\insertlistcaption}{\insertframenumber}}{}{}%
}{}
\nobreak\vskip\abovecaptionskip\nobreak
\sbox\@tempboxa{\usebeamertemplate**{caption}}%
\ifdim \wd\@tempboxa >\hsize
\usebeamertemplate**{caption}\par
\else
\global \@minipagefalse
\hb@xt@\hsize{\hfil\box\@tempboxa\hfil}%
\fi
\nobreak\vskip\belowcaptionskip\nobreak%
}
\def\listoffigureformat#1#2#3#4{%
\makebox[2ex][r]{#1}%
\hspace{1ex}%
{\usebeamercolor[fg]{bibliography entry author} #2}%
\ifthenelse{\equal{#4}{\empty}}{}{ -- #4}%
\dotfill%
\makebox[2ex][r]{#3}\par%
}
\def\listoffigures{%
\setlength{\leftskip}{3ex}
\setlength{\parindent}{-3ex}
\@starttoc{lof}%
}
\def\listoftableformat#1#2#3{\makebox[2ex][r]
{#1}\hspace{1ex}#2\dotfill\makebox[2ex][r]{#3}\par}
\def\listoftables{%
\setlength{\leftskip}{3ex}
\setlength{\parindent}{-3ex}
\@starttoc{lot}%
}
\long\def\@caption#1[#2]#3{
\par\nobreak
\begingroup
\@parboxrestore
\if@minipage
\@setminipage
\fi
\beamer@makecaption{#1}{\ignorespaces #3}{\ignorespaces #3}
{\ignorespaces #2}\par\nobreak
\endgroup}
\makeatother
\begin{document}
\begin{frame}{Frame}
\begin{figure}
\mbox{A}
\caption[citation]{The letter 'A'}
\end{figure}
\begin{itemize}
\item<1-> an item
\item<2-> another item
\item<3-> a third item
\end{itemize}
\end{frame}
\begin{frame}{List of Figures}
\listoffigures
\end{frame}
\end{document}