% ..............................................................................
% The font theme for the fau-beamer template. Parts of the following code were 
% copied from a template designed by Balthasar Reuther.
%
% Copyright 2022 by Tim Roith <tim.roith@fau.de>
%
% This program can be redistributed and/or modified under the terms
% of the GNU Public License, version 2.
%
% ------------------------------------------------------------------------------

\ProvidesPackage{styles/beamerfontthemefau}
\RequirePackage{fp}

% ..............................................................................
% Font sizes.
% ------------------------------------------------------------------------------
\def\fau@font@fontscale{1.}
\def\fau@font@fontsize{11}
\def\fau@font@baselineskip{13}
\def\fau@font@baselinescale{1.}
\def\fau@font@globalscale{1.}
\DeclareOptionBeamer{fontsize}{\def\fau@font@fontsize{#1}}
\DeclareOptionBeamer{fontbaselineskip}{\def\fau@font@baselineskip{#1}}
\DeclareOptionBeamer{fontscale}{\def\fau@font@fontscale{#1}}
\DeclareOptionBeamer{scale}{\def\fau@font@globalscale{#1}}
\DeclareOptionBeamer{baselinescale}{\def\fau@font@baselinescale{#1}}

% ..............................................................................
\ProcessOptionsBeamer
\mode<presentation>
% ..............................................................................

% Helvetica
\RequirePackage{lmodern}
\RequirePackage{textcomp}
\RequirePackage{fix-cm}
\RequirePackage[scaled=0.92]{helvet}

% ..............................................................................
% scalable vector fonts
% ..............................................................................
% this code is copied from the beamerposter package
% ------------------------------------------------------------------------------
\FPeval{\globalscale}{\fau@font@globalscale}
% define baselinescale
\FPeval{\baselinescale}{\fau@font@baselineskip/13} % normalize
\FPeval{\baselinescale}{baselinescale * 1.7} % adjust to larger canvas
\FPeval{\baselinescale}{globalscale * baselinescale} % apply global scale
\FPupn{\baselinescale}{0.442  baselinescale * 2 round}
% define fontscale
\FPeval{\fontscale}{\fau@font@fontsize/11} % normalize
\FPeval{\fontscale}{fontscale * 1.9} % adjust to larger canvas
\FPeval{\fontscale}{globalscale * fontscale} % apply global scale
\FPupn{\fontscale}{0.442  fontscale * 2 round}


% --------------------------
\edef\fontSizeX{12}
\edef\fontSizeY{14}
\FPupn{\resulttinyX}{fontscale fontSizeX * 2 round}
\FPupn{\resulttinyY}{baselinescale fontSizeY * 2 round}
\renewcommand*{\tiny}{\fontsize{\resulttinyX}{\resulttinyY}\selectfont}

\edef\fontSizeX{14.4}\edef\fontSizeY{18}   
\FPupn{\resultscriptsizeX}{fontscale fontSizeX * 2 round}
\FPupn{\resultscriptsizeY}{fontscale fontSizeY * 2 round}
\renewcommand*{\scriptsize}{\fontsize{\resultscriptsizeX}{\resultscriptsizeY}\selectfont}

\edef\fontSizeX{17.28}\edef\fontSizeY{22}
\FPupn{\resultfootnotesizeX}{fontscale fontSizeX * 2 round}
\FPupn{\resultfootnotesizeY}{baselinescale fontSizeY * 2 round}
\renewcommand*{\footnotesize}{\fontsize{\resultfootnotesizeX}{\resultfootnotesizeY}\selectfont}

\edef\fontSizeX{20.74}\edef\fontSizeY{25}
\FPupn{\resultsmallX}{fontscale fontSizeX * 2 round}
\FPupn{\resultsmallY}{baselinescale fontSizeY * 2 round}
\renewcommand*{\small}{\fontsize{\resultsmallX}{\resultsmallY}\selectfont}

\edef\fontSizeX{24.88}\edef\fontSizeY{30}
\FPupn{\resultnormalsizeX}{fontscale fontSizeX * 2 round}
\FPupn{\resultnormalsizeY}{baselinescale fontSizeY * 2 round}
\renewcommand*{\normalsize}{\fontsize{\resultnormalsizeX}{\resultnormalsizeY}\selectfont}

\edef\fontSizeX{29.86}\edef\fontSizeY{37}
\FPupn{\resultlargeX}{fontscale fontSizeX * 2 round}
\FPupn{\resultlargeY}{baselinescale fontSizeY * 2 round}
\renewcommand*{\large}{\fontsize{\resultlargeX}{\resultlargeY}\selectfont}

\edef\fontSizeX{35.83}\edef\fontSizeY{45}
\FPupn{\resultLargeX}{fontscale fontSizeX * 2 round}
\FPupn{\resultLargeY}{baselinescale fontSizeY * 2 round}
\renewcommand*{\Large}{\fontsize{\resultLargeX}{\resultLargeY}\selectfont}

\edef\fontSizeX{43}\edef\fontSizeY{54}
\FPupn{\resultLARGEX}{fontscale fontSizeX * 2 round}
\FPupn{\resultLARGEY}{baselinescale fontSizeY * 2 round}
\renewcommand*{\LARGE}{\fontsize{\resultLARGEX}{\resultLARGEY}\selectfont}

\edef\fontSizeX{51.6}\edef\fontSizeY{64}
\FPupn{\resulthugeX}{fontscale fontSizeX * 2 round}
\FPupn{\resulthugeY}{baselinescale fontSizeY * 2 round}
\renewcommand*{\huge}{\fontsize{\resulthugeX}{\resulthugeY}\selectfont}

\edef\fontSizeX{61.92}\edef\fontSizeY{77}
\FPupn{\resultHugeX}{fontscale fontSizeX * 2 round}
\FPupn{\resultHugeY}{baselinescale fontSizeY * 2 round}
\renewcommand*{\Huge}{\fontsize{\resultHugeX}{\resultHugeY}\selectfont}

\edef\fontSizeX{74.3}\edef\fontSizeY{93}
\FPupn{\resultveryHugeX}{fontscale fontSizeX * 2 round}
\FPupn{\resultveryHugeY}{baselinescale fontSizeY * 2 round}
\def\veryHuge{}
\renewcommand*{\veryHuge}{\fontsize{\resultveryHugeX}{\resultveryHugeY}\selectfont}

\edef\fontSizeX{89.16}\edef\fontSizeY{112}
\FPupn{\resultVeryHugeX}{fontscale fontSizeX * 2 round}
\FPupn{\resultVeryHugeY}{baselinescale fontSizeY * 2 round}
\def\VeryHuge{}
\renewcommand*{\VeryHuge}{\fontsize{\resultVeryHugeX}{\resultVeryHugeY}\selectfont}

\edef\fontSizeX{107}\edef\fontSizeY{134}
\FPupn{\resultVERYHugeX}{fontscale fontSizeX * 2 round}
\FPupn{\resultVERYHugeY}{baselinescale fontSizeY * 2 round}
\def\VERYHuge{}
\renewcommand*{\VERYHuge}{\fontsize{\resultVERYHugeX}{\resultVERYHugeY}\selectfont}

\AtBeginDocument{\normalsize\selectfont}

% set the normalfont (default)
\renewcommand*{\normalfont}{\normalsize}
\newcommand{\LARGELarge}{\fontsize{\resultLARGEX}{\resultLargeY}\selectfont}
% 

\setbeamerfont{title}{size=\huge,series=\bfseries}
\setbeamerfont{subtitle}{size=\Large,series=\mdseries}
%\setbeamerfont{frametitle}{size=\LARGELarge, series=\bfseries}
\setbeamerfont{frametitle}{size=\LARGE, series=\bfseries}
\setbeamerfont{framesubtitle}{size=\large,series=\mdseries}
\setbeamerfont{block title}{size=\large,series=\bfseries}
\setbeamerfont{footline}{size=\scriptsize}
\setbeamerfont{subsection in toc}{size=\Large,series=\mdseries}
\setbeamerfont{default}{size=\normalsize, series=\mdseries}
% ..............................................................................
% equal font sizes for all levels
\setbeamerfont{itemize/enumerate body}{size=\normalsize}
\setbeamerfont{itemize/enumerate subbody}{size=\normalsize}
\setbeamerfont{itemize/enumerate subsubbody}{size=\normalsize}
% ..............................................................................
% caption size
%\setbeamerfont{caption}{size=\scriptsize}


\mode<all>