mirror of https://github.com/matze/mtheme.git
393 lines
10 KiB
TeX
393 lines
10 KiB
TeX
% \iffalse meta-comment -------------------------------------------------------
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% Copyright 2015 Matthias Vogelgesang and the LaTeX community. A full list of
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% contributors can be found at
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%
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% https://github.com/matze/mtheme/graphs/contributors
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%
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% and the original template was based on the HSRM theme by Benjamin Weiss.
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%
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% This work is licensed under a Creative Commons Attribution-ShareAlike 4.0
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% International License (https://creativecommons.org/licenses/by-sa/4.0/).
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% ------------------------------------------------------------------------- \fi
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% \iffalse
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%<driver> \ProvidesFile{beamerinnerthememetropolis.dtx}
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%<*package>
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\NeedsTeXFormat{LaTeX2e}
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\ProvidesPackage{beamerinnerthememetropolis}
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[2015/06/12 A Modern Beamer Theme]
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%</package>
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%<driver> \documentclass{ltxdoc}
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%<driver> \usepackage{beamerinnerthememetropolis}
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%<driver> \begin{document}
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%<driver> \DocInput{beamerinnerthememetropolis.dtx}
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%<driver> \end{document}
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% \fi
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% \CheckSum{0}
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% \StopEventually{}
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% \iffalse
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%<*package>
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% ------------------------------------------------------------------------- \fi
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% \section{Implementation: \textsc{metropolis} inner theme}
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%
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% A |beamer| inner theme dictates the style of the frame elements traditionally
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% set in the ``body'' of each slide. These include:
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%
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% \begin{itemize}
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% \item title, part, and section pages;
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% \item itemize, enumerate, and description environments;
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% \item block environments including theorems and proofs;
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% \item figures and tables; and
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% \item footnotes and plain text.
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% \end{itemize}
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%
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%
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%
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% This customization will be changed in a future update.
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%
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% \begin{macrocode}
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\def\mthemetitleformat{\scshape\MakeLowercase}
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% \end{macrocode}
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%
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%
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%
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% \subsection{Title page}
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%
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% \begin{macro}{title page}
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%
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% Template for the title page.
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%
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% \begin{macrocode}
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\RequirePackage{tikz}
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\setbeamertemplate{title page}{
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\begin{minipage}[b][\paperheight]{\textwidth}
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% \end{macrocode}
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%
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% If the user has set a |titlegraphic|, we set it in a zero-height box so
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% it doesn't change the position of other elements.
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%
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% \begin{macrocode}
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\ifx\inserttitlegraphic\@empty\else{%
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\vbox to 0pt {
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\vspace*{2em}
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\usebeamercolor[fg]{titlegraphic}%
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\inserttitlegraphic%
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}%
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\nointerlineskip%
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}
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\fi
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\vfill%
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% \end{macrocode}
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%
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% We set the title and subtitle, but only if they are defined by the user.
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% If |\subtitle| is empty, for example, it won't leave a blank space on the
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% title slide.
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%
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% \begin{macrocode}
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\ifx\inserttitle\@empty\else{{%
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\raggedright%
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\linespread{1.0}%
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\usebeamerfont{title}%
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\usebeamercolor[fg]{title}%
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\mthemetitleformat{\inserttitle}%
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\par%
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\vspace*{0.5em}
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}}
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\fi
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\ifx\insertsubtitle\@empty\else{{%
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\usebeamerfont{subtitle}%
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\usebeamercolor[fg]{subtitle}%
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\insertsubtitle%
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\par%
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\vspace*{0.5em}
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}}
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\fi
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% \end{macrocode}
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%
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% A horizontal rule (drawn in TikZ) separates the title and subtitle from
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% the author, date, and institution.
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%
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% \begin{macrocode}
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\begin{tikzpicture}
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\usebeamercolor{title separator}
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\draw[fg] (0, 0) -- (\textwidth, 0);
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\end{tikzpicture}%
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\par%
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\vspace*{1em}%
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% \end{macrocode}
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%
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% Like the title and subtitle, we display the author only when it is defined.
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% But beamer's definition of |\insertauthor| is always nonempty, so we have
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% to test another macro initialized by |\author{...}| to see if the user has
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% defined an author. This solution was suggested by Enrico Gregorio in an
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% answer to \href{https://tex.stackexchange.com/questions/241306/}{this
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% Stack Exchange question}.
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%
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% \begin{macrocode}
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\ifx\beamer@shortauthor\@empty\else{{%
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\usebeamerfont{author}%
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\usebeamercolor[fg]{author}%
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\insertauthor%
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\par%
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\vspace*{0.25em}
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}}
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\fi
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% \end{macrocode}
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%
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% The date and institute are set after the author, again provided they are
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% nonempty. Note that the default date in \LaTeX{} is |\today|, not |\empty|.
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%
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% \begin{macrocode}
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\ifx\insertdate\@empty\else{{%
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\usebeamerfont{date}%
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\usebeamercolor[fg]{date}%
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\insertdate%
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\par%
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}}
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\fi
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\ifx\insertinstitute\@empty\else{{%
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\vspace*{3mm}
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\usebeamerfont{institute}%
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\usebeamercolor[fg]{institute}%
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\insertinstitute%
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\par%
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}}
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\fi
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\vfill
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\vspace*{1mm}
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\end{minipage}
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}
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% \end{macrocode}
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% \end{macro}%
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%
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% Normal people should use |\maketitle| or |\titlepage| instead of using the
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% |title page| beamer template directly. Beamer already defines these macros,
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% but we patch them here to make the title page |[plain]| by default, remove
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% |\@thanks|, and ensure the title frame number doesn't count.
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%
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% \begin{macro}{\maketitle}
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% \begin{macro}{\titlepage}
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%
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% Inserts the title frame, or causes the current frame to use the
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% |title page| template.
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%
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% \begin{macrocode}
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\def\maketitle{%
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\ifbeamer@inframe
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\titlepage
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\else
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\frame[plain]{\titlepage}
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\fi
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}
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\def\titlepage{%
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\usebeamertemplate{title page}
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}
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% \end{macrocode}
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% \end{macro}
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% \end{macro}
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%
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%
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%
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% \subsection{Section page}
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%
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% \begin{macro}{section page}
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%
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% Template for the section title slide at the beginning of each section.
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%
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% \begin{macrocode}
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\setbeamertemplate{section page}{
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\vspace{2em}
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\centering
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\begin{minipage}{22em}
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\usebeamercolor[fg]{section title}
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\usebeamerfont{section title}
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\insertsectionHEAD\\[-1ex]
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\usebeamertemplate*{progress bar in section page}
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\end{minipage}
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\par
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}
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\if@noSectionSlide\else%
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\AtBeginSection{
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\ifbeamer@inframe
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\sectionpage
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\else
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\frame[plain,c]{\sectionpage}
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\fi
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}
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\fi
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% \end{macrocode}
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%
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% To give users the option to \MakeUppercase or \MakeLowercase the section
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% title, we need to expand |\insertsectionhead| before applying the relevant
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% formatting command. This solution was suggested by Enrico Gregorio in an
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% answer to \href{http://tex.stackexchange.com/questions/112526/}{this
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% StackExchange question}.
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%
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% \begin{macrocode}
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\providecommand{\insertsectionHEAD}{\expandafter\formatsectionhead\insertsectionhead}
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\providecommand{\formatsectionhead}[3]{#1{#2}{\mthemetitleformat{#3}}}
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% \end{macrocode}
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% \end{macro}
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%
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% \begin{macro}{progress bar in section page}
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%
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% Template for the progress bar displayed by default on the section page.
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% This code is duplicated in large part in the outer theme's template
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% |progress bar in head/foot|.
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%
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% \begin{macrocode}
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\RequirePackage{calc}
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\newlength{\metropolis@progressonsectionpage}
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\setbeamertemplate{progress bar in section page}{
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\setlength{\metropolis@progressonsectionpage}{%
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\textwidth * \ratio{\insertframenumber pt}{\inserttotalframenumber pt}%
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}%
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\begin{tikzpicture}
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\draw[bg, fill=bg] (0,0) rectangle (\textwidth, 0.4pt);
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\draw[fg, fill=fg] (0,0) rectangle (\metropolis@progressonsectionpage, 0.4pt);
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\end{tikzpicture}%
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}
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% \end{macrocode}
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%
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% The above code assumes that |\insertframenumber| is less than or equal to
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% |\inserttotalframenumber|. However, this is not true on the first compile;
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% in the absence of an |.aux| file, |\inserttotalframenumber| defaults to 1.
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% This behaviour could cause fatal errors for long presentations, as
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% |\metropolis@progressonsectionpage| would exceed \TeX's maximum length
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% (16383.99999pt, roughly 5.75 metres or 18.9 feet).
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% To avoid this, we increase the default value for |\inserttotalframenumber|;
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% presentations with over 4000 slides will still break on first compile, but
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% users in that situation likely have deeper problems to solve.
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%
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% \begin{macrocode}
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\def\inserttotalframenumber{100}
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% \end{macrocode}
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% \end{macro}
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%
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%
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%
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% \subsection{Block environments}
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%
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% \begin{macrocode}
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\newlength{\leftrightskip}
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\if@beamer@metropolis@blockbg
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\setlength{\leftrightskip}{1ex}
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\else
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\setlength{\leftrightskip}{0ex}
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\fi
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\setbeamertemplate{block begin}{%
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\vspace*{1ex}
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\begin{beamercolorbox}[%
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ht=2.4ex,
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dp=1ex,
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leftskip=\leftrightskip,
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rightskip=\leftrightskip]{block title}
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\usebeamerfont*{block title}\insertblocktitle%
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\end{beamercolorbox}%
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\vspace*{-1pt}
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\usebeamerfont{block body}%
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\begin{beamercolorbox}[%
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dp=1ex,
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leftskip=\leftrightskip,
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rightskip=\leftrightskip,
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vmode]{block body}%
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}
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\setbeamertemplate{block end}{%
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\end{beamercolorbox}
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\vspace*{0.2ex}
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}
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% \end{macrocode}
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%
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% Alerted block environment
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%
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% \begin{macrocode}
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\setbeamertemplate{block alerted begin}{%
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\vspace*{1ex}
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\begin{beamercolorbox}[%
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ht=2.4ex,
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dp=1ex,
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leftskip=\leftrightskip,
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rightskip=\leftrightskip]{block title alerted}
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\usebeamerfont*{block title alerted}\insertblocktitle%
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\end{beamercolorbox}%
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\vspace*{-1pt}
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\usebeamerfont{block body alerted}%
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\begin{beamercolorbox}[%
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dp=1ex,
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leftskip=\leftrightskip,
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rightskip=\leftrightskip,
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vmode]{block body}%
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}
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\setbeamertemplate{block alerted end}{%
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\end{beamercolorbox}
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\vspace*{0.2ex}
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}
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% \end{macrocode}
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%
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% Example block environment
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%
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% \begin{macrocode}
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\setbeamertemplate{block example begin}{%
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\vspace*{1ex}
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\begin{beamercolorbox}[%
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ht=2.4ex,
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dp=1ex,
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leftskip=\leftrightskip,
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rightskip=\leftrightskip]{block title example}
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\usebeamerfont*{block title example}\insertblocktitle%
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\end{beamercolorbox}%
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\vspace*{-1pt}
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\usebeamerfont{block body example}%
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\begin{beamercolorbox}[%
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dp=1ex,
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leftskip=\leftrightskip,
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rightskip=\leftrightskip,
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vmode]{block body}%
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}
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\setbeamertemplate{block example end}{%
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\end{beamercolorbox}
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\vspace*{0.2ex}
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}
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% \end{macrocode}
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%
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%
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%
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% \subsection{Itemize/enumerate environments}
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% \begin{macrocode}
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\setlength{\leftmargini}{1em}
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\setlength{\leftmarginii}{1em}
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\setlength{\leftmarginiii}{1em}
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\setbeamertemplate{itemize item}{\textbullet}
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\setbeamertemplate{itemize subitem}{\textbullet}
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\setbeamertemplate{itemize subsubitem}{\textbullet}
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% \end{macrocode}
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%
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% \subsection{Figures and tables}
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% \begin{macrocode}
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\setbeamertemplate{caption label separator}{: }
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\setbeamertemplate{caption}[numbered]
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% \end{macrocode}
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%
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% \subsection{Footnotes}
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% \begin{macrocode}
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\setbeamertemplate{footnote}{%
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\parindent 0em\noindent%
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\raggedright
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\usebeamercolor{footnote}\hbox to 0.8em{\hfil\insertfootnotemark}\insertfootnotetext\par%
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}
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% \end{macrocode}
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%
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% \subsection{General text}
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% \begin{macrocode}
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\mode<all>
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\setlength{\parskip}{0.5em}
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\linespread{1.15}
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% \end{macrocode}
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%
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%
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%
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% \iffalse
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%</package>
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% \fi
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% \Finale
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\endinput
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