beamerframe 键：设置字体、颜色和其他特定于框架的样式

Question

我的目标是为带有以下标签的特定框架分配自定义样式：[想要]关键，特别是字体系列、字体颜色和背景颜色。我能够将背景颜色与关键联系起来，但在尝试对字体进行同样的操作时，成功率较低。我想要的结果是能够只写：

\begin{frame}[fancy]
\frametitle{fancy title with fancy font and colors}
fancy background, fonts, and colors
\end{frame}

我目前的解决方法是定义自定义框架和自定义框架标题命令（fancyframe 和 fancyframetitle），但我更喜欢使用简单的 fancy 标签来控制样式（更容易打开和关闭）。

以下代码尝试将 beamer 代码中的部分内容整合在一起。背景颜色似乎可以正常工作，但字体和颜色要么漏掉，要么没有应用到正确的位置。输出结果一团糟。

\documentclass[xcolor={usenames,dvipsnames}]{beamer}
\usepackage{lipsum}
\usepackage[T1]{fontenc}

\usepackage{pgfpages}
\pgfpagesuselayout{4 on 1}[border shrink=2mm]

% default options for presentation
\mode<presentation>
{
  \setbeamercolor{frametitle}{bg=white,fg=Green}
  \setbeamertemplate{itemize item}{$-$}
  \setbeamertemplate{navigation symbols}{}
  \setbeamertemplate{footline}[pagenumber,split]
}

% define some special font for fancy frames
\usepackage{fontspec,unicode-math}
\newfontfamily\myfontfamily{augie}

% set default frame style
\defbeamertemplate*{background canvas}{mydefault}
{%
  \ifbeamercolorempty[bg]{background canvas}{}{\color{bg}\vrule width\paperwidth height\paperheight}% beamer default
}

% reset the default frame styles... doing this wrong?
\BeforeBeginEnvironment{frame}{%
  \setbeamertemplate{background canvas}[mydefault]%
  \usebeamerfont{normal text}
}

% set background color for fancy frames
\defbeamertemplate*{background canvas}{fancy}
{%
  \color{lightgray!50}\vrule width\paperwidth height\paperheight% background color added
}

% define the fancy key
\makeatletter
\define@key{beamerframe}{fancy}[true]{%
  \setbeamercovered{invisible}
  \setbeamertemplate{background canvas}[fancy]
  \setbeamerfont{normal text}{family={\myfontfamily}}% leaks
  \setbeamertemplate{itemize item}{$\blacktriangleright$}% leaks
  \setbeamertemplate{frametitle}{\color{Red}\textbf{\insertframetitle}}% leaks
}
\makeatother

% workaround: custom frame title  | likewise could make custom frames, but don't want to...
\newcommand{\fancyframetitle}[1]{\textcolor{NavyBlue}{\myfontfamily\Large#1}\vspace{0.05\paperheight}\par}


\begin{document}

\begin{frame}
\frametitle{Normal Frame (Green Title, Normal Font)}
\lipsum[11]
\begin{itemize}
\item \lipsum[11]
\end{itemize}
\end{frame}

\begin{frame}[fancy]
\frametitle{Fancy Frame (Red Title, Fancy Font)}
\lipsum[11]
\begin{itemize}
\item \lipsum[11]
\end{itemize}
\end{frame}

\begin{frame}
\frametitle{Normal Frame (Green Title, Normal Font)}
\lipsum[11]
\begin{itemize}
\item \lipsum[11]
\end{itemize}
\end{frame}

\begin{frame}[fancy]
\fancyframetitle{Fancy Frame (Blue Title, Fancy Font)}
\lipsum[11]
\begin{itemize}
\item \lipsum[11]
\end{itemize}
\end{frame}

\end{document}

实验失败的结果：样式泄露或未在预期的地方应用。

Answer 1

解决方案与https://tex.stackexchange.com/a/174213/36296

您必须在每一帧之前撤消所有特殊设置（并注意设置/使用的顺序）：

% !TeX TS-program = lualatex

\documentclass[xcolor={usenames,dvipsnames}]{beamer}
\usepackage{lipsum}
\usepackage[T1]{fontenc}

\usepackage{pgfpages}
\pgfpagesuselayout{4 on 1}[border shrink=2mm]

% default options for presentation
\mode<presentation>
{
  \setbeamertemplate{navigation symbols}{}
  \setbeamertemplate{footline}[pagenumber,split]
}

% define some special font for fancy frames
\usepackage{fontspec,unicode-math}
\newfontfamily\myfontfamily{augie}

% reset the default frame styles
\BeforeBeginEnvironment{frame}{%
  \setbeamercolor{background canvas}{bg=white}%
  \setbeamerfont{frametitle}{family=\sffamily,series=\normalfont}
  \setbeamercolor{frametitle}{bg=white,fg=Green}
  \setbeamertemplate{itemize item}{$-$}
  \setbeamerfont{normal text}{family=\sffamily}
  \usebeamerfont{normal text}
}

% define the fancy key
\makeatletter
\define@key{beamerframe}{fancy}[true]{%
  \setbeamercolor{background canvas}{bg=lightgray!50}%
  \setbeamercovered{invisible}
  \setbeamertemplate{background canvas}[fancy]
  \setbeamerfont{frametitle}{family={\myfontfamily},series=\bfseries}
  \setbeamercolor{frametitle}{bg=lightgray!50,fg=red}
  \setbeamertemplate{itemize item}{$\blacktriangleright$}
  \setbeamerfont{normal text}{family={\myfontfamily}}
  \usebeamerfont{normal text}
}
\makeatother

% special title for one-off use
\newcommand{\fancyframetitle}[1]{\textcolor{NavyBlue}{\myfontfamily\Large#1}\vspace{0.05\paperheight}\par}


\begin{document}

\begin{frame}
\frametitle{Normal Frame (Green Title, Normal Font)}
\lipsum[11]
\begin{itemize}
\item \lipsum[11]
\end{itemize}
\end{frame}

\begin{frame}[fancy]
\frametitle{Fancy Frame (Red Title, Fancy Font)}
\lipsum[11]
\begin{itemize}
\item \lipsum[11]
\end{itemize}
\end{frame}

\begin{frame}
\frametitle{Normal Frame (Green Title, Normal Font)}
\lipsum[11]
\begin{itemize}
\item \lipsum[11]
\end{itemize}
\end{frame}

\begin{frame}[fancy]
\fancyframetitle{Fancy Frame (Blue Title, Fancy Font)}
\lipsum[11]
\begin{itemize}
\item \lipsum[11]
\end{itemize}
\end{frame}

\end{document}