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+% \iffalse meta-comment -------------------------------------------------------
+% Copyright (C) 2021 Thomas Lambert <trigon@thl.ovh>
+% Other contributors to this theme are listed here:
+% https://gitlab.com/thlamb/beamertheme-trigon/-/graphs/master
+%
+% The original template was heavily inspired by Metropolis from Matthias
+% Vogelgesang.
+%
+% License CC-BY-SA 4.0
+% This work is licensed under a Creative Commons Attribution-ShareAlike 4.0
+% International License (https://creativecommons.org/licenses/by-sa/4.0/)
+% ------------------------------------------------------------------------- \fi
+% \iffalse
+%<*package>
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{beamerouterthemetrigon}[2021/03/25 v0.5.0 Trigon outer theme]
+%</package>
+% \fi
+% \CheckSum{0}
+% \StopEventually{}
+% \iffalse
+%<*package>
+% ------------------------------------------------------------------------- \fi
+%
+% \subsection{\themename outer theme}
+%
+% A |beamer| outer theme dictates the style of the frame elements traditionally
+% set outside the ``body'' of each slide, such as the frame title, the logo, the
+% footer, etc.
+%
+% \subsubsection{Package dependencies}
+%
+% \begin{macrocode}
+\RequirePackage{pgfopts}
+% \end{macrocode}
+%
+% \subsubsection{Definitions}
+% We define the command |\logsmall| to specify the logo that needs to be applied
+% displayed on all normal frames.
+% \begin{macrocode}
+\def\logsmall{}
+\newcommand\smalllogo[1]{
+ \def\logsmall{#1}
+}
+% \end{macrocode}
+%
+% \subsubsection{Options}
+%
+% \begin{macro}{numbering}
+% Adds slide number to the bottom of each regular frame
+% \begin{macrocode}
+\pgfkeys{
+ /trigon/outer/numbering/.cd,
+ .is choice,
+ none/.code=\setbeamertemplate{frame numbering}[none],
+ counter/.code=\setbeamertemplate{frame numbering}[counter],
+ fraction/.code=\setbeamertemplate{frame numbering}[fraction]
+}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\trigon@outer@setdefaults}
+% Sets default values for the outer theme options.
+% \begin{macrocode}
+\newcommand{\trigon@outer@setdefaults}{
+ \pgfkeys{/trigon/outer/.cd,
+ numbering=counter
+ }
+}
+% \end{macrocode}
+% \end{macro}
+%
+%
+% \subsubsection{Frame title}
+% \begin{macro}{frametitle}
+% Template for the frame title
+% \begin{macrocode}
+\defbeamertemplate*{frametitle}{trigon}
+{
+ \vspace{-1pt}
+ \begin{beamercolorbox}[wd=\paperwidth,leftskip=0.05\paperwidth]{frametitle}
+ \vskip.4cm
+ \ifx\insertframesubtitle\@empty%
+ {\usebeamerfont{frametitle}\usebeamercolor[fg]{frametitle}\insertframetitle}%
+ \else%
+ {\usebeamerfont{frametitle}\usebeamercolor[fg]{frametitle}\insertframetitle}\\[-.25cm]
+ {\usebeamerfont{framesubtitle}\usebeamercolor[fg]{framesubtitle}\insertframesubtitle}%
+ \fi
+ \vskip.3cm
+ \end{beamercolorbox}
+}
+% \end{macrocode}
+% \end{macro}
+%
+%
+% \subsubsection{Fame header}
+% \begin{macro}{headline}
+% Templates for the frame header
+% \begin{macrocode}
+\defbeamertemplate{headline}{none}{}
+\defbeamertemplate*{headline}{logo}{
+\ifx\logsmall\@empty\else
+ \hfill\includegraphics[width=20pt]{\logsmall}\hspace{20pt}\vspace{-40pt}
+\fi
+}
+% \end{macrocode}
+% \end{macro}
+%
+%
+% \subsubsection{Frame footer}
+% Define various template for frame footer and manage frame numbering.
+% \begin{macrocode}
+\setbeamertemplate{navigation symbols}{}
+
+\defbeamertemplate{frame footer}{none}{}
+\defbeamertemplate{frame footer}{custom}[1]{ #1 }
+\defbeamertemplate{frame numbering}{none}{}
+\defbeamertemplate{frame numbering}{counter}{\insertframenumber}
+\defbeamertemplate{frame numbering}{fraction}{
+ \insertframenumber/\inserttotalframenumber
+}
+
+\defbeamertemplate{footline}{plain}{%
+ \begin{beamercolorbox}[wd=\textwidth, sep=10pt]{page number in head/foot}%
+ \usebeamerfont{page number in head/foot}%
+ \usebeamercolor[fg]{page number in head/foot}%
+ \usebeamertemplate*{frame footer}
+ \hfill%
+ \usebeamertemplate*{frame numbering}
+ \end{beamercolorbox}%
+}
+
+\setbeamertemplate{footline}[plain]
+% \end{macrocode}
+%
+% \begin{macro}{appendix}
+% Removes page numbering and per-slide progress bars when |\appendix| is
+% called. This makes it easier to include additional ``backup slides'' at
+% the end of the presentation, especially in conjunction with the package
+% |appendixnumberbeamer|.
+% \begin{macrocode}
+\AtBeginDocument{%
+ \apptocmd{\appendix}{%
+ \pgfkeys{%
+ /trigon/outer/.cd,
+ numbering=none}
+ }{}{}
+}
+% \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{Process package options}
+%
+% \begin{macrocode}
+\trigon@outer@setdefaults
+\ProcessPgfPackageOptions{/trigon/outer}
+% \end{macrocode}
+%
+% \iffalse
+%</package>
+% \fi
+% \Finale
+\endinput