如何在投影機主文件中定義用於主題中使用的附加資訊的命令？

Question

在典型的投影機文件中，我可以設定各種選項，例如\author或\title：

主文件

\documentclass{beamer}

\author{George Orwell}
\title{Animal Farm}
\date{\today}
\institute[TUD]
%\def\talklocation{Berlin}

\usetheme{tudrobert}

\begin{document}

\begin{frame}
\titlepage
\end{frame}

\end{document}

然後可以在模板定義中使用：

Beamerthemetudrobert.tex

\mode<presentation>

\usepackage{graphicx}
\usepackage[absolute,overlay]{textpos}
\usepackage{calc}

\usepackage{fontspec}
\useinnertheme{tudrobert}

\setbeamertemplate{navigation symbols}{}
\setbeamertemplate{blocks}[rounded][shadow=true]  

\mode<all>

最後是我想使用指令的主題：

Beamerinnerthemetudrobert.tex

\mode<presentation>

\defbeamertemplate*{title page}{tudrobert}{%

    \usebeamerfont*{title}
    \MakeUppercase{\inserttitle}\par
    \vfill
    {\scriptsize\insertauthor}
    \vfill
    \vfill
    %\talklocation, \insertdate

}

\mode<all>

---

建議使用

\def\talklocation{Berlin}

和

\talklocation

拋出錯誤

這同樣適用於

\newcommand{\talklocation}{Berlin}

添加附加屬性/字串以傳遞給主題的適當方法是什麼？

Answer 1

正如 Jojo Boulix 在評論中所建議的投影機選項是要走的路。

這三個文件可能如下所示：

主文件

\documentclass{beamer}

\author{George Orwell}
\title{Animal Farm}
\date{\today}
\institute[TUD]

\usetheme[location=Berlin]{tudrobert}

\begin{document}

\begin{frame}
\titlepage
\end{frame}

\end{document}

Beamerthemetudrobert.tex

\mode<presentation>

\DeclareOptionBeamer{location}{\PassOptionsToPackage{location=#1}{beamerinnerthemetudrobert}}
\DeclareOptionBeamer{conference}{\PassOptionsToPackage{conference=#1}{beamerinnerthemetudrobert}}
\ProcessOptionsBeamer

\usepackage{graphicx}
\usepackage[absolute,overlay]{textpos}
\usepackage{calc}

\usepackage{fontspec}
\useinnertheme{tudrobert}

\setbeamertemplate{navigation symbols}{}
\setbeamertemplate{blocks}[rounded][shadow=true]  

\mode<all>

Beamerinnerthemetudrobert.tex

\mode<presentation>

\DeclareOptionBeamer{location}{\def\beamer@tudrobert@location{#1}}    
\DeclareOptionBeamer{conference}{\def\beamer@tudrobert@conference{#1}}    
\ProcessOptionsBeamer

\defbeamertemplate*{title page}{tudrobert}{%

    \usebeamerfont*{title}
    \MakeUppercase{\inserttitle}\par
    \vfill
    {\scriptsize\insertauthor}
    \vfill
    \vfill
    \beamer@tudrobert@location, \insertdate
    \beamer@tudrobert@conference

}

\mode<all>