在 LaTeX beamer 中定义新的块环境

Question

我的文档中有两种示例。我想使用不同的颜色，比如红色和蓝色。这就是我现在正在做的事情。

\documentclass[]{beamer}
\usetheme{Madrid}
\begin{document}

\begin{frame}
\frametitle{Test}
\setbeamercolor{block title}{fg=white,bg=red!75!black}
\begin{block}{First Kind Example}
This is example of the first kind.
\end{block}
\setbeamercolor{block title}{fg=white,bg=blue!75!black}
\begin{block}{Second Kind Example}
This is example of the second kind.
\end{block}
\end{frame}

\end{document}

setbeamercolor我知道这有点愚蠢。我想定义两个新的块环境，每个颜色一个，这样每次使用时就不需要使用它们了。

\begin{block1}{First Kind Example}
...
\end{block1}
\begin{block2}{Second Kind Example}
...
\end{block2}

我知道我需要在序言中定义这两个新环境，但不知道如何做。谢谢您的帮助。

顺便问一下，关于 LaTeX/beamer 中的这些技巧，有什么好的参考资料吗？有什么推荐吗？

Answer 1

如果您想将它们作为示例呈现，并使用 beamer 的环境对它们进行标记example（而不仅仅是使用通用的block），您可以尝试如下操作：

\documentclass[]{beamer}
\usetheme{Madrid}

\newtheorem{examplefirst}{Example}
\newtheorem{examplesecond}{Example}
\newenvironment<>{examplefirst}[1][]{%
  \setbeamercolor{block title example}{fg=white,bg=red!75!black}%
  \begin{example}#2[#1]}{\end{example}}
\newenvironment<>{examplesecond}[1][]{%
  \setbeamercolor{block title example}{fg=white,bg=blue!75!black}%
  \begin{example}#2[#1]}{\end{example}}

\begin{document}

\begin{frame}
    \begin{examplefirst}[An example of the first kind]
        Something about this example of the first kind.
    \end{examplefirst}
    \begin{examplesecond}[An example of the second kind]
        Something about this example of the second kind.
    \end{examplesecond}
    \begin{example}[A regular example]
        Something about the regular example.
    \end{example}
\end{frame}

\end{document}

生成结果：

如果你喜欢坚持使用通用block环境，也许这样的事情可能会起作用：

\documentclass[]{beamer}
\usetheme{Madrid}

\newenvironment<>{examplefirst}[1]{%
  \setbeamercolor{block title}{fg=white,bg=red!75!black}%
  \begin{block}#2{#1}}{\end{block}}
\newenvironment<>{examplesecond}[1]{%
  \setbeamercolor{block title}{fg=white,bg=blue!75!black}%
  \begin{block}#2{#1}}{\end{block}}

\begin{document}

\begin{frame}
    \begin{examplefirst}{An example of the first kind}
        Something about this example of the first kind.
    \end{examplefirst}
    \begin{examplesecond}{An example of the second kind}
        Something about this example of the second kind.
    \end{examplesecond}
    \begin{block}{A regular block}
        Something in the regular block format.
    \end{block}
\end{frame}

\end{document}

Answer 2

这是使用不同颜色的标准代码

\documentclass{beamer}

\usecolortheme{whale}
\usecolortheme{orchid}

\begin{document}

\begin{frame}{A frame}

\begin{block}{A block environment}
Some text.
\end{block}

\begin{alertblock}{An alertblock environment}
Some text.
\end{alertblock}

\begin{exampleblock}{An exampleblock environment}
Some text.
\end{exampleblock}

\end{frame}

\end{document}

Answer 3

@cfr 答案的扩展版本：

\newenvironment<>{definition}[2][DEFINITION]{%
    \setbeamercolor{block title}{fg=white,bg= green}%
    \setbeamerfont{block title example}{family=\ssfamily}
    \begin{block}{#1}#3{#2}}{\end{block}}

并将其用作

\begin{definition}
some text
\end{definition}

其默认标题为：DEFINITION

或者您可以给出您的标题：

\begin{definition}[YOUR TITLE]
    some text
\end{definition}