昨天我观看了 Beamer 的一场演讲，每张新幻灯片都会从页面顶部滑出内容，并在底部添加新内容。我花了一段时间才习惯，但习惯之后我发现它非常有用。我的演讲并非全都适合这种格式，但有些可以，我想知道一种有效的方法。我问了演讲者，他对所有内容进行了硬编码（即，他剪切并粘贴内容）。我试图提出一个不那么痛苦的解决方案。
\documentclass[t]{beamer}
\beamertemplatenavigationsymbolsempty %removes from controls from bottom right
\begin{document}
\begin{frame}
\only<+-+(2)>{\frametitle{Frame Title 1}
\begin{theorem}[1]
These are the hypotheses of this amazingly important theorem, which we can call Theorem 1. Following these hypotheses, comes the amazing conclusion. Aren't you impressed?
\end{theorem}
}
\only<+-+(2)>{
\begin{theorem}[2]
These are the hypotheses of this amazingly important theorem, which we can call Theorem 2. Following these hypotheses, comes the amazing conclusion. Aren't you impressed?
\end{theorem}
}
\only<+-+(3)>{
\begin{theorem}[3]
These are the hypotheses of this amazingly important theorem, which we can call Theorem 3. Following these hypotheses, comes the amazing conclusion. Aren't you impressed?
\end{theorem}
}
\only<+->{\frametitle{Frame Title 2}
\begin{theorem}[4]
These are the hypotheses of this amazingly important theorem, which we can call Theorem 4. Following these hypotheses, comes the amazing conclusion. Aren't you impressed?
\end{theorem}
}
\only<+->{
\begin{theorem}[5]
These are the hypotheses of this amazingly important theorem, which we can call Theorem 5. Following these hypotheses, comes the amazing conclusion. Aren't you impressed?
\end{theorem}
}
\only<+->{\frametitle{Frame Title 3}
\alert<6>{Here comes an itemized list:}
}
\begin{itemize}[<+->]
\item This is the first bullet point
\item That's the second one
\item The third bullet point
\item The final bullet point
\end{itemize}
\end{frame}
\end{document}
这将返回输出
积极的一面是我不需要重复任何文本，而且我已经想出了如何在frametitle适当的时候更改。缺点是我必须非常小心地使用\only每个块的命令，而添加新内容通常需要重新编号。我想要将每个文本块（即我希望在幻灯片上接下来显示的内容）放入它自己的环境中，然后让 tex 计算块的大小并自动在屏幕上放置尽可能多的内容（类似于allowframebreaks但更细致入微），以及一种frametitle在适当的地方更改的便捷方式。我并不是特别关心它如何与section和subsection命令交互，因为我通常不会在幻灯片中使用它们，但如果它也与这些兼容，则会获得加分。
这是否太过雄心勃勃了？