在 Beamer 中使框架标题和块宽度相同

Question

考虑一下这个MWE：

\documentclass[t]{beamer}
\setbeamercolor{frametitle}{fg=white, bg=blue}
\setbeamercolor{block body}{fg=white, bg=red}
\setbeamercolor{block title}{fg=white, bg=green}
\setbeamertemplate{frametitle}{%
\begin{beamercolorbox}[wd=\textwidth, ht=0.5cm, dp=0.2cm]{frametitle}
\usebeamerfont{frametitle}\insertframetitle
\end{beamercolorbox}
}
\begin{document}

\begin{frame}{This is the frame title}
\begin{block}{Block title}
This is the block content
\end{block}
Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Ut purus
elit, vestibulum ut, placerat ac, adipiscing vitae, felis. Curabitur
dictum gravida mauris. 
\end{frame}

\end{document}

得出的结果是：

我可以通过将 beamercolorbox 的宽度设置为 来使包含 frametitle 的颜色框与普通文本的宽度相同\textwidth。如何使所有彩色块的宽度相同？

Answer 1

在 的传统定义中，beamer blocks实际文本周围有更多空间。为了获得blocks与 中相同的宽度headline template，其中beamercolorboxesbeamer 块由 组成，使用[wd=\textwidth, ht=0.5cm, dp=0.2cm]取自 的设置重新定义headline template。

\documentclass[t]{beamer}

\setbeamercolor{frametitle}{fg=white, bg=blue}
\setbeamercolor{block body}{fg=white, bg=red}
\setbeamercolor{block title}{fg=white, bg=green}
\setbeamertemplate{frametitle}{%
\begin{beamercolorbox}[wd=\textwidth, ht=0.5cm, dp=0.2cm]{frametitle}
\usebeamerfont{frametitle}\insertframetitle
\end{beamercolorbox}
}
\begin{document}


\setbeamertemplate{block begin}{
    \begin{beamercolorbox}[wd=\textwidth, ht=0.5cm, dp=0.2cm]{block title}%
    \usebeamerfont*{block title}%
        {\rule[-0.4ex]{0mm}{2ex}\insertblocktitle}%
            \end{beamercolorbox}%
    {\ifbeamercolorempty[bg]{block body}{}{\nointerlineskip\vskip-0.5pt}}%
    \usebeamerfont{block body}%
    \begin{beamercolorbox}[wd=\textwidth, ht=0.5cm, dp=0.2cm]{block body}%
        \ifbeamercolorempty[bg]{block body}{\vskip-.25ex}{\vskip-.75ex}\vbox{}%
    }
    \setbeamertemplate{block end}{
    \end{beamercolorbox}
    \vspace*{.25cm}
}

\begin{frame}{This is the frame title}
\begin{block}{Block title}
This is the block content
\end{block}
Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Ut purus
elit, vestibulum ut, placerat ac, adipiscing vitae, felis. Curabitur
dictum gravida mauris. 
\end{frame}

\end{document}