Beamer：将框架拆分为多张幻灯片并隐藏讲义中的不透明元素

Question

我有一张投影仪幻灯片，其中的项目会显示出来，然后使用叠加层变为不透明。一些元素会隐藏起来。使用handout模式时，我想为框架创建两张幻灯片。问题是，对于讲义模式，我希望不透明的项目变得不可见。

在本 MWE 中，我演示了基本问题。随着幻灯片的进展，每个项目都变成灰色。随着幻灯片的进展，嵌套项目变得不可见。

\documentclass{beamer}
\setbeamercovered{transparent}
\setbeamercovered{again covered={\opaqueness<1->{35}}}

\begin{document}

\begin{frame}
\frametitle{Split into two slides for handout}

\begin{enumerate}

    \item<+|handout:1> First item, becomes grey when covered again, shows in first handout slide, want to disappear completely in second handout slide
    \begin{itemize}
        \item<only@.|handout:1> Only shows while first item is uncovered, and in first handout slide
    \end{itemize}
    \item<+|handout:1> Second item, becomes grey when covered, shows in first handout slide, want to disappear completely in second handout slide
    \begin{itemize}
        \item<only@.|handout:1> Only shows while second item is uncovered, and in first handout slide
    \end{itemize}
    \item<+|handout:2> Third item, shows in second handout slide
    \begin{itemize}
        \item<only@.|handout:2> Shows along with third item, and in handout slide
    \end{itemize}

\end{enumerate}

\end{frame}

\end{document}

现在，使用该handout选项进行比较：

\documentclass[handout]{beamer}
\setbeamercovered{transparent}
\setbeamercovered{again covered={\opaqueness<1->{35}}}

\begin{document}

\begin{frame}
\frametitle{Split into two slides for handout}

\begin{enumerate}

    \item<+|handout:1> First item, becomes grey when covered again, shows in first handout slide, want to disappear completely in second handout slide
    \begin{itemize}
        \item<only@.|handout:1> Only shows while first item is uncovered, and in first handout slide
    \end{itemize}
    \item<+|handout:1> Second item, becomes grey when covered, shows in first handout slide, want to disappear completely in second handout slide
    \begin{itemize}
        \item<only@.|handout:1> Only shows while second item is uncovered, and in first handout slide
    \end{itemize}
    \item<+|handout:2> Third item, shows in second handout slide
    \begin{itemize}
        \item<only@.|handout:2> Shows along with third item, and in handout slide
    \end{itemize}

\end{enumerate}

\end{frame}

\end{document}

不处于模式时，一切都按预期工作handout。但是，我希望在处于模式时，项目 1 和 2 在幻灯片 2 上隐藏，并且不占用任何空间handout。现在，在处于handout模式的第二张幻灯片上，前两个项目只是灰色的。

Answer 1

您可以使用handout:only@1仅在讲义模式的第一个覆盖上显示以下项目：

\documentclass[handout]{beamer}

\setbeamercovered{transparent}
\setbeamercovered{again covered={\opaqueness<1->{35}}}

\begin{document}

\begin{frame}
\frametitle{Split into two slides for handout}

\begin{enumerate}

    \item<+|handout:only@1> First item, becomes grey when covered again, shows in first handout slide, want to disappear completely in second handout slide
    \begin{itemize}
        \item<only@.|handout:1> Only shows while first item is uncovered, and in first handout slide
    \end{itemize}
    \item<+|handout:only@1> Second item, becomes grey when covered, shows in first handout slide, want to disappear completely in second handout slide
    \begin{itemize}
        \item<only@.|handout:1> Only shows while second item is uncovered, and in first handout slide
    \end{itemize}
    \item<+|handout:2> Third item, shows in second handout slide
    \begin{itemize}
        \item<only@.|handout:2> Shows along with third item, and in handout slide
    \end{itemize}

\end{enumerate}

\end{frame}

\end{document}