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如何从 beamer 和迭代创建命令中提取所有小节标题

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如何从 beamer 和迭代创建命令中提取所有小节标题

我想从 Beamer 演示文稿中提取所有小节标题，以便稍后构建类似于思维导图中的链接作为投影仪中的目录。但我会使用存储子部分标题的迭代构建命令。我认为 latex 至少应该运行两次。

\documentclass{beamer}
\usepackage{lmodern}

\AtBeginSubsection{%
    \renewcommand{\thesection}{\alph{section}}
    \renewcommand{\thesubsection}{\alph{subsection}}
    \expandafter\def\csname Section\thesection subsection\thesubsection\endcsname{\tableofcontents[currentsubsection,hideothersubsections,sectionstyle=hide/hide,subsectionstyle=show/hide]}
}

\begin{document}

\begin{frame}
    \frametitle{contents of all subsections}

    % The commands below shall be defined 
    \SectionAsubsectionA
    \SectionAsubsectionB
    \SectionBsubsectionA

\end{frame}

\section{section 1}

\subsection{subsection 1.1}

\subsection{subsection 1.2}

\section{section 2}

\subsection{subsection 2.1}

\end{document}

答案1

该答案基于 Werner 的评论，因此所有功劳都归于他。

\documentclass{beamer}

\usepackage{tikz}

\makeatletter
\let\oldsection\section
\renewcommand{\section}[2][]{%
    \oldsection[#1]{#2}% Call default \section (this also steps the section counter)
    \hypertarget{\csname Section\Alph{section}\endcsname}{}%
    \setbox0=\hbox{#1}\ifdim\wd0=0pt%
        \immediate\write\@auxout%
            {\string\global\string\def\string\Section\Alph{section}{%
              \arabic{section}{.} #2}}%
            %{\string\global\string\def\string\Section\Alph{section}{#2}}%
    \else%
        \immediate\write\@auxout%
            {\string\global\string\def\string\Section\Alph{section}{%
              \arabic{section}{.} #1}}%
            %{\string\global\string\def\string\Section\Alph{section}{#1}}%
    \fi%
}
\makeatother

\makeatletter
\let\oldsubsection\subsection
\renewcommand{\subsection}[2][]{%
    \oldsubsection[#1]{#2}% Call default \subsection (this also steps the subsection counter)
    \hypertarget{\csname Section\Alph{section}subsection\Alph{subsection}\endcsname}{}%
    \setbox0=\hbox{#1}\ifdim\wd0=0pt%
        \immediate\write\@auxout%
            {\string\global\string\def\string\Section\Alph{section}subsection\Alph{subsection}{%
              \arabic{section}.\arabic{subsection}{.} #2}}%
            %{\string\global\string\def\string\Section\Alph{section}subsection\Alph{subsection}{#2}}%
    \else%
        \immediate\write\@auxout%
            {\string\global\string\def\string\Section\Alph{section}subsection\Alph{subsection}{%
              \arabic{section}.\arabic{subsection}{.} #1}}%
            %{\string\global\string\def\string\Section\Alph{section}subsection\Alph{subsection}{#1}}%
    \fi%
}
\makeatother

\begin{document}
\begin{frame}

% Print sections with hyperlinks
\foreach \Idxsec in {A,...,Z}{%
    \ifcsname Section\Idxsec \endcsname
        \xdef\sectionname{\csname Section\Idxsec\endcsname}
        \hyperlink{\sectionname}{\sectionname}\par
    \fi
}

% Print subsections with hyperlinks
\foreach \Idxsec in {A,...,Z}{%
    \foreach \Idxsubsec in {A,...,Z}{%
        \ifcsname Section\Idxsec subsection\Idxsubsec \endcsname
            \xdef\subsectionname{\csname Section\Idxsec subsection\Idxsubsec\endcsname}
            \hyperlink{\subsectionname}{\subsectionname}\par
        \fi
    }
}

% Print sections and subsections with hyperlinks
\foreach \Idxsec in {A,...,Z}{%
    \ifcsname Section\Idxsec \endcsname
        \xdef\sectionname{\csname Section\Idxsec\endcsname}
        \hyperlink{\sectionname}{\sectionname}\par
        \foreach \Idxsubsec in {A,...,Z}{%
            \ifcsname Section\Idxsec subsection\Idxsubsec \endcsname
                \xdef\subsectionname{\csname Section\Idxsec subsection\Idxsubsec\endcsname}
                \hyperlink{\subsectionname}{\subsectionname}\par
            \fi
        }
    \fi
}

\end{frame}
\end{document}

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