beamerfontthemejku.sty

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%% 
%% LaTeX Beamer Font Theme for Johannes Kepler University Linz
%% 
%% Copyright (C) 2021-2024  Michael Roland
%% 
%% This is a rewrite of the JKU theme originally by
%% Susanne Hametner, Doris Pargfrieder, and Pieter-Jan Hoedt.
%% 
%% This Source Code Form is subject to the terms of the Mozilla Public
%% License, v. 2.0. If a copy of the MPL was not distributed with this
%% file, You can obtain one at https://mozilla.org/MPL/2.0/.
%% 
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\NeedsTeXFormat{LaTeX2e}[1995/12/01]

\ProvidesPackage{beamerfontthemejku}[2023/07/11 v3.0+git JKU Linz Beamer Theme (font theme)]


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%% 
%% Dependencies
%% 

\RequirePackage{etoolbox}
\RequirePackage{graphicx}
\RequirePackage{xcolor}
\RequirePackage{iftex}
% legacy packages prior to merge into iftex; still relevant?
\@ifundefined{ifluatex}{%
    \RequirePackage{ifluatex}
}{}
\@ifundefined{ifxetex}{%
    \RequirePackage{ifxetex}
}{}
\RequirePackage{listings}
\RequirePackage{verbatim}

%% 
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%% 
%% Options & Parameters
%% 

% Option fontpath={}: set path to template font resources (defaults to "./fonts")
\newcommand{\jkubeamer@fontpath}{fonts}
\DeclareOptionBeamer{fontpath}{\renewcommand{\jkubeamer@fontpath}{#1}}

% Option [no]fancyfonts: use custom TTF fonts with XeTeX/LuaTeX (defaults to true)
\newbool{jkubeamer@xetexfonts}
\booltrue{jkubeamer@xetexfonts}%
\DeclareOptionBeamer{fancyfonts}[true]{\setbool{jkubeamer@xetexfonts}{#1}}
\DeclareOptionBeamer{nofancyfonts}{\boolfalse{jkubeamer@xetexfonts}}

% Option [no]compactverb: use condensed fixed-width font for verbatim and listings (requires XeTeX and the fancyfonts option)
\newbool{jkubeamer@compactverb}
\booltrue{jkubeamer@compactverb}%
\DeclareOptionBeamer{compactverb}[true]{\setbool{jkubeamer@compactverb}{#1}}
\DeclareOptionBeamer{nocompactverb}{\boolfalse{jkubeamer@compactverb}}

% Option [no]compactmono: use condensed fixed-width font (requires XeTeX and the fancyfonts option)
\newbool{jkubeamer@compactmono}
%\booltrue{jkubeamer@compactmono}%
\DeclareOptionBeamer{compactmono}[true]{\setbool{jkubeamer@compactmono}{#1}}
\DeclareOptionBeamer{nocompactmono}{\boolfalse{jkubeamer@compactmono}}

% Option [no]mathastext: use standard document fonts (and default to sans-serif font) in math mode
\newbool{jkubeamer@mathastext}
%\booltrue{jkubeamer@mathastext}%
\DeclareOptionBeamer{mathastext}[true]{%
    \setbool{jkubeamer@mathastext}{#1}%
    \ifbool{jkubeamer@mathastext}{%
        \ifbool{jkubeamer@eulermath}{%
            \PackageWarning{beamerfontthemejku}{Options `mathastext' and `eulermath' cannot be used simultaneously, ignoring `eulermath'!}%
        }{}%
        \boolfalse{jkubeamer@eulermath}%
    }{}%
}
\DeclareOptionBeamer{nomathastext}{\boolfalse{jkubeamer@mathastext}}

% Option [no]eulermath: use Euler math fonts (instead of Fira Sans) in math mode (legacy behavior)
\newbool{jkubeamer@eulermath}
%\booltrue{jkubeamer@eulermath}%
\DeclareOptionBeamer{eulermath}[true]{%
    \setbool{jkubeamer@eulermath}{#1}%
    \ifbool{jkubeamer@eulermath}{%
        \ifbool{jkubeamer@mathastext}{%
            \PackageWarning{beamerfontthemejku}{Options `eulermath' and `mathastext' cannot be used simultaneously, ignoring `mathastext'!}%
        }{}%
        \boolfalse{jkubeamer@mathastext}%
    }{}%
}
\DeclareOptionBeamer{noeulermath}{\boolfalse{jkubeamer@eulermath}}

\ProcessOptionsBeamer

%% 
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%% 
%% Fancy fonts with LuaTeX/XeTeX
%% 

\RequirePackage{lmodern}
\RequirePackage{inconsolata}
\RequirePackage{helvet}
\ifluatex\else\ifxetex\else%
    \RequirePackage{euler}
\fi\fi
\RequirePackage{fontawesome5}
\ifluatex\else\ifxetex\else%
    % fix potentially mis-packaged FA5 in TeX Live 2017, see https://tex.stackexchange.com/q/497792/290236
    \pdfmapfile{=fontawesome5.map}%
\fi\fi
%\usefonttheme{serif}
\usefonttheme{professionalfonts}

\ifluatex\else\ifxetex\else%
    \ifbool{jkubeamer@xetexfonts}{%
        \PackageWarning{beamerfontthemejku}{True-type fonts are only supported on LuaLaTeX/XeLaTeX. Please consider switching to LuaLaTeX (or XeLaTex) to get the full look and feel of this beamer template. Note that you can silence this warning with the `nofancyfonts' option.}%
    }{}%
    \boolfalse{jkubeamer@xetexfonts}%
\fi\fi

\ifbool{jkubeamer@xetexfonts}{%
    \ifbool{jkubeamer@eulermath}{
        \@ifpackageloaded{unicode-math}{%
            \setmathfont{Euler-Math.otf}
        }{%
            \RequirePackage{euler-math}%
        }%
    }{%
        \RequirePackage[usefilenames]{firamath-otf}%
        %\RequirePackage[no-math]{fontspec}
    }
    % discover font path
    \expandafter\IfFileExists\expandafter{\jkubeamer@fontpath PublicSans-Regular.ttf}{%
        \IfFontExistsTF{\jkubeamer@fontpath PublicSans-Regular.ttf}{%
        }{%
            \xdef\jkubeamer@fontpath{}
        }%
    }{\expandafter\IfFileExists\expandafter{\jkubeamer@fontpath/PublicSans-Regular.ttf}{%
        \xdef\jkubeamer@fontpath{\jkubeamer@fontpath/}
        \IfFontExistsTF{\jkubeamer@fontpath PublicSans-Regular.ttf}{%
        }{%
            \xdef\jkubeamer@fontpath{}
        }%
    }{\IfFontExistsTF{PublicSans-Regular.ttf}{%
        \xdef\jkubeamer@fontpath{}
    }{%
        \PackageError{beamerfontthemejku}{Font files not found in `\jkubeamer@fontpath', forgot to set the font path with package option `fontpath='?}{}%
        \stop
    }}}%
    \IfFontExistsTF{\jkubeamer@fontpath PublicSans-Regular.ttf}{%
    }{%
        \PackageError{beamerfontthemejku}{Font files not found in local installation. Fonts must be installed to `$TEXMF[HOME|LOCAL]/fonts/truetype/' or an alternative font path set with package option `fontpath='}{}%
        \stop
    }%
    \defaultfontfeatures{
        Path={\jkubeamer@fontpath},
        Extension=.ttf,
        UprightFont=*-Regular,
        BoldFont=*-Bold,
        ItalicFont=*-Italic,
        BoldItalicFont=*-BoldItalic
    }
    \defaultfontfeatures+[Inconsolata,InconsolataCondensed]{
        Scale=1.16,
        ItalicFont={},
        BoldItalicFont={},
        AutoFakeSlant,
        AutoFakeBold,
        %BoldItalicFeatures={FakeSlant}
    }
    \setmainfont{Merriweather}
    %\setsansfont{OpenSans}
    \setsansfont{PublicSans}
    \ifbool{jkubeamer@compactmono}{%
        \setmonofont{InconsolataCondensed}
    }{%
        \setmonofont{Inconsolata}
    }
    \newfontfamily\rmlightfamily{Merriweather}[
        NFSSFamily=rmlight,
        UprightFont=*-Light,
        BoldFont=*-Regular,
        ItalicFont=*-LightItalic,
        BoldItalicFont=*-Italic,
        Ligatures=TeX]
    \newfontfamily\rmblackfamily{Merriweather}[
        NFSSFamily=rmblack,
        UprightFont=*-Black,
        BoldFont=*-Black,
        ItalicFont=*-BlackItalic,
        BoldItalicFont=*-BlackItalic,
        Ligatures=TeX]
    %\newfontfamily\sflightfamily{OpenSans}[
    %    NFSSFamily=sflight,
    %    UprightFont=*-Light,
    %    BoldFont=*-SemiBold,
    %    ItalicFont=*-LightItalic,
    %    BoldItalicFont=*-SemiBoldItalic,
    %    Ligatures=TeX]
    %\newfontfamily\sfblackfamily{OpenSans}[
    %    NFSSFamily=sfblack,
    %    UprightFont=*-ExtraBold,
    %    BoldFont=*-ExtraBold,
    %    ItalicFont=*-ExtraBoldItalic,
    %    BoldItalicFont=*-ExtraBoldItalic,
    %    Ligatures=TeX]
    \newfontfamily\sflightfamily{PublicSans}[
        NFSSFamily=sflight,
        UprightFont=*-Thin,
        BoldFont=*-Medium,
        ItalicFont=*-ThinItalic,
        BoldItalicFont=*-MediumItalic,
        Ligatures=TeX]
    \newfontfamily\sfblackfamily{PublicSans}[
        NFSSFamily=sfblack,
        %LetterSpace=1.0,
        UprightFont=*-ExtraBold,
        BoldFont=*-Black,
        ItalicFont=*-ExtraBoldItalic,
        BoldItalicFont=*-BlackItalic,
        Ligatures=TeX]
    \ifbool{jkubeamer@compactmono}{%
        \newfontfamily\ttlightfamily{InconsolataCondensed}[
            NFSSFamily=ttlight,
            UprightFont=*-Light,
            BoldFont=*-Medium]
    }{%
        \newfontfamily\ttlightfamily{Inconsolata}[
            NFSSFamily=ttlight,
            UprightFont=*-Light,
            BoldFont=*-Medium]
    }
    \newfontfamily\ttcondensedfamily{InconsolataCondensed}[
        NFSSFamily=ttcondensed]
    \newfontfamily\ttcondensedlightfamily{InconsolataCondensed}[
        NFSSFamily=ttcondensedlight,
        UprightFont=*-Light,
        BoldFont=*-Medium]
    %\setmathsfont(Digits,Latin){Merriweather}
    %\setmathrm{Merriweather}
    %\setboldmathrm{Merriweather}[
    %    NFSSFamily=rmblack,
    %    UprightFont=*-Black,
    %    BoldFont=*-Black,
    %    ItalicFont=*-BlackItalic,
    %    BoldItalicFont=*-BlackItalic]
    %%\setmathsf{OpenSans}
    %\setmathsf{PublicSans}
    %\ifbool{jkubeamer@compactmono}{%
    %    \setmathtt{InconsolataCondensed}
    %}{%
    %    \setmathtt{Inconsolata}
    %}
}{%
    \RequirePackage[T1]{fontenc}
    \newcommand{\rmlightfamily}{\rmfamily}
    \newcommand{\rmblackfamily}{\rmfamily\bfseries}
    \newcommand{\sflightfamily}{\sffamily}
    \newcommand{\sfblackfamily}{\sffamily\bfseries}
    \newcommand{\ttlightfamily}{\ttfamily}
    \newcommand{\ttcondensedfamily}{\ttfamily}
    \newcommand{\ttcondensedlightfamily}{\ttfamily}
    
    \ifbool{jkubeamer@compactmono}{%
        \PackageWarning{beamerfontthemejku}{Option `compactmono' requires the `fancyfonts' option.}%
    }{}%
    \ifbool{jkubeamer@compactverb}{%
        \PackageWarning{beamerfontthemejku}{Option `compactverb' requires the `fancyfonts' option.}%
    }{}%
}

\ifbool{jkubeamer@compactverb}{%
    \newcommand{\jkubeamer@verbfamily}{\ttcondensedfamily}
}{%
    \newcommand{\jkubeamer@verbfamily}{\ttfamily}
}%

\renewcommand\familydefault{\sfdefault}

%% 
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%% 
%% Packages loaded for convenience
%% 
%% NOTE: These packages were loaded by the old JKU beamer package and remain
%%       here to match legacy behavior. You can prevent these packages from
%%       being loaded by using the nooptpackages option.
%% 

\ifbool{jkubeamer@optpackages}{%
    \RequirePackage{textcomp}
    \PassOptionsToPackage{full}{textcomp}
    %\RequirePackage{wasysym}
    %\RequirePackage{pifont}
}{}

%% 
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%% 
%% Experimental: Use standard document fonts in math mode
%% 

\ifbool{jkubeamer@mathastext}{%
    \ifxetex%
        % As of version 1.4, mathastext no longer compiles with XeLaTeX unless we
        % the (deprecated) everymath option or the nominus option. Bug has been
        % acknowledged by mathastext author. Until then, we are safe to use everymath:
        \PassOptionsToPackage{everymath}{mathastext}
        % In the future, we may also want to consider to use nominus (and use the
        % standard math font for it). In that case, we should do this for at least
        % the three basic operators +/-/= to achieve consistent operator alignment.
        % Actually, this looks very promising in combination with FiraMath and we
        % might want to consider always doing that in future (not just for XeLaTeX):
        %\PassOptionsToPackage{noplus,nominus,noequal}{mathastext}
    \fi
    \usepackage[italic,defaultmathsizes,eulergreek,nosmalldelims,unicodeminus]{mathastext}
}{}

%% 
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%% 
%% Normal style
%% 
\setbeamerfont*{normal text}{family=\sffamily, size*={11pt}{12.5pt}}
\setbeamerfont*{structure}{}
\setbeamerfont*{alerted text}{series=\bfseries}
\setbeamerfont*{example text}{}
\setbeamerfont*{emphasized text}{series=\itshape}
%% 
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%% 
%% Title frames
%% 
\setbeamerfont*{title}{family=\sfblackfamily, series=\bfseries, size*={22pt}{26.4pt}}
\setbeamerfont*{series title}{parent=title, size*={10pt}{12pt}}
\setbeamerfont*{subtitle}{family=\sffamily, size*={10pt}{12pt}}
\setbeamerfont*{subsubtitle}{parent=subtitle, size*={8pt}{9.6pt}}

\setbeamerfont*{author}{parent=subtitle}
\setbeamerfont*{institute}{parent=subsubtitle}
\setbeamerfont*{date}{parent=subsubtitle}
\setbeamerfont*{agenda}{parent=subtitle}
\setbeamerfont*{agenda title}{parent=agenda, family=\sfblackfamily, series=\bfseries}

\setbeamerfont*{imprint}{family=\sffamily, size*={4pt}{5pt}}
\setbeamerfont*{imprint name}{parent=imprint, family=\sfblackfamily, series=\bfseries}
\setbeamerfont*{imprint address}{parent=imprint}
\setbeamerfont*{imprint url}{parent=imprint}

\setbeamerfont*{section title}{parent=title}
\setbeamerfont*{subsection title}{parent=subtitle}
\setbeamerfont*{subsubsection title}{parent=subsubtitle}
%% 
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%% 
%% Frame title/footer
%% 
\setbeamerfont*{frametitle}{family=\sfblackfamily, series=\bfseries, size*={14pt}{16.8pt}}
\setbeamerfont*{framesubtitle}{parent=frametitle}
\setbeamerfont*{section in head/foot}{parent=structure, size*={6pt}{7pt}}
\setbeamerfont*{page number in head/foot}{parent=section in head/foot}
\setbeamerfont*{date in head/foot}{parent=section in head/foot}
\setbeamerfont*{footnote}{parent=normal text, size*={8pt}{9.6pt}}
\setbeamerfont*{footnote mark}{parent=normal text, size*={6pt}{7pt}}
%% 
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%% 
%% Contact frames
%% 
\setbeamerfont*{contacttitle}{parent=title}
\setbeamerfont*{contactsubtitle}{parent=framesubtitle}
\setbeamerfont*{contactinfo}{parent=normal text, size*={10pt}{12pt}}
\setbeamerfont*{contactinfo icon}{parent=contactinfo, size*={8pt}{9.6pt}}
\setbeamerfont*{acknowledgement}{parent=normal text, size*={5pt}{6pt}}
%% 
%% 
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%% 
%% Itemization and enumeration
%% 
\setbeamerfont*{item}{parent=normal text}
\setbeamerfont*{subitem}{parent=item, size*={10pt}{12pt}}
\setbeamerfont*{subsubitem}{parent=subitem, size*={9pt}{11pt}}
\setbeamerfont*{itemize item}{parent=item}
\setbeamerfont*{itemize subitem}{parent=subitem}
\setbeamerfont*{itemize subsubitem}{parent=subsubitem}
\setbeamerfont*{enumerate item}{parent=item}
\setbeamerfont*{enumerate subitem}{parent=subitem}
\setbeamerfont*{enumerate subsubitem}{parent=subsubitem}
\setbeamerfont*{description item}{parent=item, series=\bfseries}
%% 
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%% 
%% Table of contents
%% 
\setbeamerfont*{section in toc}{parent=structure}
\setbeamerfont*{subsection in toc}{parent=section in toc}
\setbeamerfont*{subsubsection in toc}{parent=subsection in toc}
%% 
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%% 
%% Bibliography
%% 
\setbeamerfont*{bibliography item}{parent=normal text}
\setbeamerfont*{bibliography entry author}{parent=normal text}
\setbeamerfont*{bibliography entry title}{parent=normal text}
\setbeamerfont*{bibliography entry location}{parent=normal text}
\setbeamerfont*{bibliography entry note}{parent=normal text}
%% 
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%% 
%% Captions
%% 
\setbeamerfont*{caption}{parent=normal text, size*={10pt}{12pt}}
\setbeamerfont*{caption name}{parent=caption}
%% 
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%% 
%% Blocks
%% 
\setbeamerfont*{block body}{parent=normal text}
\setbeamerfont*{block title}{parent=block body}
\setbeamerfont*{block body example}{parent=block body}
\setbeamerfont*{block title example}{parent=block title}
\setbeamerfont*{block body alerted}{parent=block body}
\setbeamerfont*{block title alerted}{parent=block title}
%% 
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%% 
%% Highlighting commands
%% 

\renewcommand<>{\alert}[1]{{%
    \only#2{%
        \usebeamerfont{alerted text}%
        \ifbeamercolorempty[fg]{alerted text}{}{\usebeamercolor[fg]{alerted text}}%
    }#1}}
\renewcommand<>{\emph}[1]{{%
    \only#2{%
        \usebeamerfont{emphasized text}%
        \ifbeamercolorempty[fg]{emphasized text}{}{\usebeamercolor[fg]{emphasized text}}%
    }#1}}
\newcommand<>{\highlight}[1]{{%
    \only#2{%
        \usebeamerfont{example text}%
        \ifbeamercolorempty[fg]{example text}{}{\usebeamercolor[fg]{example text}}%
    }#1}}
\renewcommand<>{\structure}[1]{{%
    \only#2{%
        \usebeamerfont{structure}%
        \ifbeamercolorempty[fg]{structure}{}{\usebeamercolor[fg]{structure}}%
    }#1}}

%% 
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%% 
%% Verbatim and listings
%% 

%\def\verbatim@font{\fontsize{10pt}{11pt}\jkubeamer@verbfamily\hyphenchar\font\m@ne\@noligs}
\def\verbatim@font{\normalfont\jkubeamer@verbfamily\hyphenchar\font\m@ne\@noligs}

% Command \textverb{...}: Display argument in verbatim font (unlike with \verb|...|, the argument is not treated as verbatim).
\newcommand{\textverb}[1]{{\verbatim@font #1}}

\lstset{%
    %language=[LaTeX]TeX,
    extendedchars=true,
    columns=fullflexible, % since we are using a fixed-width font anyways
    keepspaces=true,      % needs to be set to maintain fixed-width property of spaces with fullflexible
    %fontadjust=true,
    numbers=left,
    numberstyle=\fontsize{6pt}{6.6pt}\jkubeamer@verbfamily,
    %stepnumber=1,
    basicstyle=\fontsize{10pt}{11pt}\jkubeamer@verbfamily,
    commentstyle=\crGreen\itshape,
    keywordstyle=\crBlue\bfseries,
    stringstyle=\crPurple,
    tabsize=4,
    showtabs=false,
    showspaces=false,
    showstringspaces=true,
    breaklines=true,
    %frame=tb,
    %framerule=0.5pt,
    %framexleftmargin=0.5em,
    %framexrightmargin=0.5em,
    %xleftmargin=0.5em,
    %xrightmargin=0.5em,
}


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%% 
%% URLs
%% 

\urlstyle{same}

% Nasty hack to emulate passing option `hyphens' to the url package:
\def\do@url@hyp{\do\-}

\newcommand{\mailto}[1]{\href{mailto:#1}{#1}}
\newcommand{\prettyurl}[2][]{\ifstrempty{#1}{\href{#2}{#2}}{\href{#1}{#2}}}

%% 
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%% 
%% Setup default document font
%% 

\linespread{1.15}
\AtBeginDocument{\usebeamerfont{normal text}}

%% 
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