Beamer 使用 XeLaTeX 和“AtBeginSection”在第二个屏幕上显示注释

Question

我正在使用beamerXeLaTeX。每添加一个新部分，我都会在演示文稿中添加一个专门的部分页面。现在我开始在演示文稿中添加注释，并想使用该show notes on second screen选项，因为我用于演示的软件非常适合这种格式。不幸的是，结果是没有显示部分幻灯片后面的框架内容。

它确实可以与 LuaTeX 和 pdfTeX 正常配合使用。

梅威瑟：

\documentclass{beamer}
\usepackage{pgfpages}
\setbeameroption{show notes on second screen}

\AtBeginSection{
    \frame{\insertsectionhead}
}

\begin{document}
\section{My Section}
\begin{frame}{My Frametitle}
    My Content
\end{frame}
\note{
    My Notes
}
\end{document}

输出：

好像是个 bug。有什么修复/解决方法吗？

Answer 1

字体颜色似乎有问题，因此文本显示为白色。

解决方法

重置每一帧的字体颜色。以下代码添加\usebeamercolor[fg]{normal text}到幻灯片的定义（取自beamerbaseframe.sty）。

\documentclass{beamer}
\usepackage{pgfpages}
\setbeameroption{show notes on second screen}

\AtBeginSection{
    \frame{\insertsectionhead}
}

\makeatletter

\renewenvironment{beamer@frameslide}{%
    \ifbeamer@autobreak\else%
    \ifx\beamer@againname\@empty%
    {\let\@elt\beamer@restorecounter\beamer@overlaycounterresets}%
    \else%
    {\let\@elt\beamer@labelrestorecounter\beamer@overlaycounterresets}%
    \fi%
    \fi%
    \global\c@beamerpauses=1\relax%
    \expandafter\beamer@ifempty\expandafter{\beamer@framestartpage}{%
        \stepcounter{subsectionslide}%
        \xdef\beamer@framestartpage{\the\c@page}% only first time
    }{\clearpage\beamer@notesactions}% cleanup from previous slide
    \hypersetup{pdfpagetransition=R}%
    \hypersetup{pdfpageduration=}%
    \@ifundefined{thispdfpagelabel}{}{%
        \thispdfpagelabel{\insertframenumber}}%
    \xdef\beamer@frameendpage{\the\c@page}% every time
    \beamer@setuplinks%
    \beamer@displaybreak%
    \global\setbox\beamer@zoombox=\box\voidb@x%
    \def\beamer@zoomer{}%
    \beamer@slidehaszoomfalse%
    \gdef\insertframetitle{}%
    \gdef\insertframesubtitle{}%
    \gdef\beamer@frametitle{}%
    \gdef\beamer@shortframetitle{}%
    \gdef\beamer@framesubtitle{}%
    \let\beamer@startcomment=\beamer@startcommentinframe%
    % Start slide:
    \usebeamercolor[fg]{normal text}% NEW
    \beamer@framenotesbegin%
    \global\setbox\beamer@framebox=\vbox\bgroup%
    \beamer@inframetrue%
    \let\frame=\framelatex% inside frames, use LaTeX's \frame command
    \begin{beamer@framepauses}%
        \refcounter{framenumber}%use frame number for  \label
        \ifbeamer@shrink%
        \hsize=\beamer@shrinkfactorinv\hsize%
        \textwidth=\beamer@shrinkfactorinv\textwidth%
        \linewidth=\beamer@shrinkfactorinv\linewidth%
        \fi%
        % Insert labels if necessary:
        \ifx\beamer@againname\@empty\else%
        \nointerlineskip\vbox to0pt{\vss%
            \label<\the\beamer@slideinframe>{\beamer@againname<\the\beamer@slideinframe>}%
            \ifnum\beamer@slideinframe=1\relax%
            \label<1>{\beamer@againname}%
            \fi%
        }\nointerlineskip%
        \fi%
        \ifx\beamer@framehypertargets\@empty\else%
        \nointerlineskip\vbox to0pt{\vss%
            \beamer@framehypertargets%
            \global\let\beamer@framehypertargets\@empty%
        }\nointerlineskip%
        \fi%
        \vskip-\parskip\vbox{}%
        \beamer@initfirstlineunskip%
        \ifbeamer@plainframe\nointerlineskip\fi%
        \beamer@checkframetitle}%
    {\par
    \end{beamer@framepauses}%
    \egroup%
    \ifx\beamer@frametitle\@empty%
    \setbox\beamer@frametitlebox=\box\voidb@x%
    \else%
    \setbox\beamer@frametitlebox=\vbox{%
        \vbox{}%
        {\parskip0pt\usebeamertemplate***{frametitle}\vskip0.25em}%
    }%
    \fi%
    \ifbeamer@plainframe%
    \beamer@frametextheight=\paperheight%
    \else%
    \beamer@frametextheight=\textheight%
    \fi%
    \advance\beamer@frametextheight by-\ht\beamer@frametitlebox%
    \advance\beamer@frametextheight by-\dp\beamer@frametitlebox%
    \advance\beamer@frametextheight by-\beamer@frametopskip%
    \ifbeamer@shrink%
    \beamer@shrinkframebox%
    \fi%
    \ifx\beamer@zoomer\@empty
    \setbox\beamer@framebox=\vbox{%
        \nobreak\vbox{}\nobreak\par\nobreak\beamer@entrycode\nobreak%
        \nointerlineskip\unvbox\beamer@frametitlebox%
        \nobreak%
        \ifbeamer@autobreak%
        \vskip\beamer@frametopskipautobreak%
        \else%
        \vskip\beamer@frametopskip%
        \fi%
        \nobreak%
        \nointerlineskip\box\beamer@zoombox\nointerlineskip%
        \nobreak%
        \ifbeamer@slidehaszoom\box\beamer@framebox\else\unvbox\beamer@framebox\fi%
        % bottom skip is added in autobreakframebox
    }%
    \beamer@autobreakframebox%
    \else%
    \beamer@zoomer%
    \fi%
    \beamer@undolabels%
    \beamer@framenotesend%
    \box\beamer@framebox}

\makeatother

\begin{document}
\section{My Section}
\begin{frame}{My Frametitle}
    My Content
    \note{hgv}
\end{frame}

\end{document}

编辑

在评论中@Benjamin 提出了这个更简单的解决方案：

\documentclass{beamer}
\usepackage{pgfpages}
\setbeameroption{show notes on second screen}

\AtBeginSection{
    \frame{\insertsectionhead}
}

\makeatletter 
\def\beamer@framenotesbegin{% at beginning of slide
     \usebeamercolor[fg]{normal text}
      \gdef\beamer@noteitems{}% 
      \gdef\beamer@notes{}% 
}
\makeatother

\begin{document}
    \section{My Section}
    \begin{frame}{My Frametitle}
        My Content
        \note{hgv}
    \end{frame}

\end{document}