我使用自定义 Beamer 主题进行演示。我想在演示中使用块 ( \begin{block}…\end{block}
)。这些块渲染得略微太宽,不适合我的主题。有没有办法设置块的默认宽度,例如.9\textwidth
?
答案1
如果您不需要具有可自定义宽度的新块环境,而只是想更改原始块环境的宽度,请在序言中添加以下内容:
\addtobeamertemplate{block begin}{%
\setlength{\textwidth}{0.9\textwidth}%
}{}
\addtobeamertemplate{block alerted begin}{%
\setlength{\textwidth}{0.9\textwidth}%
}{}
\addtobeamertemplate{block example begin}{%
\setlength{\textwidth}{0.9\textwidth}%
}{}
答案2
您可以定义自己的块环境,并使用可选参数作为其宽度并提供默认值,例如.9\textwidth
。
以下是一个例子:
\documentclass{beamer}
\usetheme{Warsaw}
\usepackage[english]{babel}
\newenvironment<>{varblock}[2][.9\textwidth]{%
\setlength{\textwidth}{#1}
\begin{actionenv}#3%
\def\insertblocktitle{#2}%
\par%
\usebeamertemplate{block begin}}
{\par%
\usebeamertemplate{block end}%
\end{actionenv}}
\begin{document}
\begin{frame}
\begin{block}{Standard}
Normal block
\end{block}
\begin{varblock}[4cm]{New block}
Variable width, here 4cm
\end{varblock}
\begin{varblock}{New block}
If no width was given, .9\textbackslash textwidth will be used
\end{varblock}
\end{frame}
\end{document}
我发布了这个例子这里在2008。
答案3
使用 Stefan Kottwitz 的代码并做了微小的修改,我将其放在了我的序言中。
% Variable width block
\newenvironment<>{varblock}[2][0.9\textwidth]{%
\setlength{\textwidth}{#1}%
\setlength{\linewidth}{\textwidth}% required to itemize respect the width of block
\begin{actionenv}#3%
\def\insertblocktitle{#2}%
\par%
\usebeamertemplate{block begin}}
{\par%
\usebeamertemplate{block end}%
\end{actionenv}}
% Variable width example block
\newenvironment<>{varexampleblock}[2][0.9\textwidth]{%
\setlength{\textwidth}{#1}%
\setlength{\linewidth}{\textwidth}%
\begin{actionenv}#3%
\def\insertblocktitle{#2}%
\par%
\setbeamercolor{local structure}{parent=example text}%
\usebeamertemplate{block example begin}}
{\par%
\usebeamertemplate{block example end}%
\end{actionenv}}
% Variable width alert block
\newenvironment<>{varalertblock}[2][0.9\textwidth]{%
\setlength{\textwidth}{#1}%
\setlength{\linewidth}{\textwidth}%
\begin{actionenv}#3%
\def\insertblocktitle{#2}%
\par%
\setbeamercolor{local structure}{parent=alerted text}%
\usebeamertemplate{block alerted begin}}
{\par%
\usebeamertemplate{block alerted end}%
\end{actionenv}}