大都市 Beamer 演示文稿中的部分和子部分自定义

Question

我一直在用 Beamer 制作幻灯片演示。感谢这个问题我有以下代码，它生成带有标题的幻灯片，标题中包含章节和子章节

\documentclass[10pt]{beamer}
\graphicspath{{./Figures/}}
\usetheme[progressbar=frametitle]{metropolis}
\setbeamercolor{progress bar}{fg=orange,bg=green}

\makeatletter
\setbeamertemplate{headline}
{% 
  {\usebeamerfont{section in head/foot}
  \begin{beamercolorbox}[ht=3.5ex,dp=1.125ex,%
      leftskip=.3cm,rightskip=.3cm plus1fil]{section in head/foot}
    \usebeamercolor[fg]{section in head/foot}%
    \insertsectionhead
  \end{beamercolorbox}}%
  \begin{beamercolorbox}[colsep=1.5pt]{middle separation line head}
  \end{beamercolorbox}
  {\usebeamerfont{subsection in head/foot}
  \begin{beamercolorbox}[ht=2.5ex,dp=1.125ex,%
    leftskip=.3cm,rightskip=.3cm plus1fil]{subsection in head/foot}
    \insertsubsectionhead
  \end{beamercolorbox}}%
  \begin{beamercolorbox}[colsep=1.5pt]{lower separation line head}
  \end{beamercolorbox}
}
\makeatother

\setbeamercolor{section in head/foot}{fg=normal text.bg, bg=structure.fg}

\setbeamerfont{section in head/foot}{size=\small}
\setbeamerfont{subsection in head/foot}{size=\small}

\begin{document}


\section{Introduction}
\subsection{Subsection}

\begin{frame}{Introduction}

    \begin{center}
    I have text here
    \end{center}

\end{frame}


\end{document}

现在，我想知道是否存在一种方法来包含子部分，但只在一张幻灯片中，例如，在单张幻灯片的标题中添加另一行，然后手动引入子部分的名称，例如

而其他幻灯片一开始就只有Section和。Subsection

Answer 1

使用最新版本的 beamer（v3.70 或更新版本），您可以暂时在标题中添加另一个框，如下所示：

\documentclass[10pt]{beamer}
\graphicspath{{./Figures/}}
\usetheme[progressbar=frametitle]{moloch}% modern fork of the metropolis theme
\setbeamercolor{progress bar}{fg=orange,bg=green}

\makeatletter
\setbeamertemplate{headline}
{% 
  {\usebeamerfont{section in head/foot}
  \begin{beamercolorbox}[ht=3.5ex,dp=1.125ex,%
      leftskip=.3cm,rightskip=.3cm plus1fil]{section in head/foot}
    \usebeamercolor[fg]{section in head/foot}%
    \insertsectionhead
  \end{beamercolorbox}}%
  \begin{beamercolorbox}[colsep=1.5pt]{middle separation line head}
  \end{beamercolorbox}
  {\usebeamerfont{subsection in head/foot}
  \begin{beamercolorbox}[ht=2.5ex,dp=1.125ex,%
    leftskip=.3cm,rightskip=.3cm plus1fil]{subsection in head/foot}
    \insertsubsectionhead
  \end{beamercolorbox}}%
  \begin{beamercolorbox}[colsep=1.5pt]{lower separation line head}
  \end{beamercolorbox}
}
\makeatother

\setbeamercolor{section in head/foot}{fg=normal text.bg, bg=structure.fg}
\setbeamercolor{subsubsection in head/foot}{fg=normal text.bg, bg=structure.fg}

\setbeamerfont{section in head/foot}{size=\small}
\setbeamerfont{subsection in head/foot}{size=\small}
\setbeamerfont{subsubsection in head/foot}{size=\small}

\begin{document}


\section{Introduction}
\subsection{Subsection}
\subsubsection{Subsubsection}

\begingroup
\addtobeamertemplate{headline}{}{
  {\usebeamerfont{subsubsection in head/foot}
  \begin{beamercolorbox}[ht=2.5ex,dp=1.125ex,%
    leftskip=.3cm,rightskip=.3cm plus1fil]{subsubsection in head/foot}
    \insertsubsubsectionhead
  \end{beamercolorbox}}%
}
\begin{frame}{Introduction}

    \begin{center}
    I have text here
    \end{center}

\end{frame}
\endgroup

\begin{frame}
content...
\end{frame}

\end{document}