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修改 Beamer Warsaw 中的标题宽度

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修改 Beamer Warsaw 中的标题宽度

我正在使用 Beamer Warsaw 进行演示。我需要修改标题和页脚，因为作品的标题很长。因此，对于页脚，调整如下：

\setbeamertemplate{footline}
{
  \leavevmode%
  \hbox{%
  \begin{beamercolorbox}[wd=.25\paperwidth,ht=2.25ex,dp=1ex,center]{author in head/foot}%
    \usebeamerfont{author in head/foot}\insertshortauthor
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.75\paperwidth,ht=2.25ex,dp=1ex,center]{title in head/foot}%
    \usebeamerfont{title in head/foot}\insertshorttitle\hspace*{3em}
  \end{beamercolorbox}}%
  \vskip0pt%
}

至于标题，我不知道该修改什么。我尝试了：

\setbeamertemplate{headline}
{
  \leavevmode%
  \hbox{%
  \begin{beamercolorbox}[wd=.25\paperwidth]{section in head/foot}%
    \usebeamerfont{subsection in head/foot}\insertsectionhead
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.75\paperwidth]{subsection in head/foot}%
    \usebeamerfont{section in head/foot}\insertsubsectionhead
  \end{beamercolorbox}}%
  \vskip0pt%
}

但显然它不起作用。

答案1

Warsaw内部使用shadow外部主题，而外部主题又使用split外部主题定义headline（当compress未激活选项时）为

\defbeamertemplate*{headline}{split theme}
{%
  \leavevmode%
  \@tempdimb=2.4375ex%
  \ifnum\beamer@subsectionmax<\beamer@sectionmax%
    \multiply\@tempdimb by\beamer@sectionmax%
  \else%
    \multiply\@tempdimb by\beamer@subsectionmax%
  \fi%
  \ifdim\@tempdimb>0pt%
    \advance\@tempdimb by 1.825ex%
    \begin{beamercolorbox}[wd=.5\paperwidth,ht=\@tempdimb]{section in head/foot}%
      \vbox to\@tempdimb{\vfil\insertsectionnavigation{.5\paperwidth}\vfil}%
    \end{beamercolorbox}%
    \begin{beamercolorbox}[wd=.5\paperwidth,ht=\@tempdimb]{subsection in head/foot}%
      \vbox to\@tempdimb{\vfil\insertsubsectionnavigation{.5\paperwidth}\vfil}%
    \end{beamercolorbox}%
  \fi%
}

然后您可以轻松改变条纹的宽度：

\documentclass{beamer}
\usetheme{Warsaw}

\setbeamertemplate{footline}
{
  \leavevmode%
  \hbox{%
  \begin{beamercolorbox}[wd=.25\paperwidth,ht=2.25ex,dp=1ex,center]{author in head/foot}%
    \usebeamerfont{author in head/foot}\insertshortauthor
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.75\paperwidth,ht=2.25ex,dp=1ex,center]{title in head/foot}%
    \usebeamerfont{title in head/foot}\insertshorttitle\hspace*{3em}
  \end{beamercolorbox}}%
  \vskip0pt%
}

\makeatletter
\setbeamertemplate{headline}
{%
  \leavevmode%
  \@tempdimb=2.4375ex%
  \ifnum\beamer@subsectionmax<\beamer@sectionmax%
    \multiply\@tempdimb by\beamer@sectionmax%
  \else%
    \multiply\@tempdimb by\beamer@subsectionmax%
  \fi%
  \ifdim\@tempdimb>0pt%
    \advance\@tempdimb by 1.825ex%
    \begin{beamercolorbox}[wd=.25\paperwidth,ht=\@tempdimb]{section in head/foot}%
      \vbox to\@tempdimb{\vfil\insertsectionnavigation{.25\paperwidth}\vfil}%
    \end{beamercolorbox}%
    \begin{beamercolorbox}[wd=.75\paperwidth,ht=\@tempdimb]{subsection in head/foot}%
      \vbox to\@tempdimb{\vfil\insertsubsectionnavigation{.75\paperwidth}\vfil}%
    \end{beamercolorbox}%
  \fi%
}
\makeatother
\title{A reallly really really really long title just for the example}
\begin{document}

\section{A test section}
\begin{frame} test\end{frame}
\subsection{Test subsection one one}
\begin{frame} test\end{frame}
\subsection{Test subsection one two}
\begin{frame} test\end{frame}

\section{Another test section}
\begin{frame} test\end{frame}
\subsection{Test subsection two one}
\begin{frame} test\end{frame}
\subsection{Test subsection two two}
\begin{frame} test\end{frame}
\subsection{Test subsection two three}
\begin{frame} test\end{frame}

\end{document}

其中一个框架的图像：

在此处输入图片描述

但是，使用 的可选参数\title，您可以使用较短的标题作为 `footlinev，以避免重新定义：

\title[Short title]{A reallly really really really long title just for the example}

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