\NeedsTeXFormat{LaTeX2e}[1995/12/01]
\ProvidesClass{latexkurs}
\LoadClassWithOptions{beamer}

%%%

\RequirePackage{ifluatex}
\ifluatex\else\errmessage{This document requires LuaLaTeX}\fi

\RequirePackage{etex,etoolbox}
\RequirePackage{fontspec}
\RequirePackage[ngerman]{babel}
\RequirePackage{csquotes}
\RequirePackage{array}
\RequirePackage{wrapfig}
\RequirePackage{booktabs}
\RequirePackage{ccicons}
\RequirePackage{calc}
\RequirePackage{mdframed}

\RequirePackage{luacode}
\RequirePackage{pgfplots}
\RequirePackage{manfnt}

\RequirePackage{tikz}
\usetikzlibrary{arrows,intersections,calc,through,%
  external,positioning,automata,datavisualization,%
  datavisualization.formats.functions}

\setlength{\abovedisplayskip}{0pt}

%%% include variable macros

\input{course-details}

%%% theme

\definecolor{fsfwblue}{RGB}{40,173,184}
\definecolor{fsfwpurple}{RGB}{101,75,199}
\definecolor{fsfwgreen}{RGB}{107,187,0}
\definecolor{fsfwgray}{RGB}{240,240,240}

\useinnertheme[shadow=true]{rounded}
\useoutertheme{infolines}

\setbeamercolor{section in toc}{fg=black,bg=white}
\setbeamercolor{alerted text}{fg=fsfwgreen!80!gray}
\setbeamercolor*{palette primary}{fg=fsfwpurple!60!black,bg=fsfwblue!60!white}
\setbeamercolor*{palette secondary}{fg=fsfwpurple!70!black,bg=fsfwgray!15!white}
\setbeamercolor*{palette tertiary}{bg=fsfwpurple!80!black,fg=fsfwgray!10!white}
\setbeamercolor*{palette quaternary}{fg=fsfwpurple,bg=fsfwgray!5!white}

\setbeamercolor*{sidebar}{fg=fsfwpurple,bg=gray!15!white}

\setbeamercolor*{palette sidebar primary}{fg=fsfwpurple!10!black}
\setbeamercolor*{palette sidebar secondary}{fg=white}
\setbeamercolor*{palette sidebar tertiary}{fg=fsfwpurple!50!black}
\setbeamercolor*{palette sidebar quaternary}{fg=fsfwgray!10!white}

\setbeamercolor{titlelike}{parent=palette primary,bg=fsfwgreen}
\setbeamercolor{frametitle}{bg=fsfwblue,fg=white}
\setbeamerfont{frametitle}{series=\bfseries}

\setbeamercolor*{separation line}{}
\setbeamercolor*{fine separation line}{}

\setbeamercolor{data in head/foot}{fg=white}

\setbeamerfont{block title}{size={}}
\setbeamercolor{titlelike}{parent=structure,bg=white}

\setbeamertemplate{title page}{{
    \setbeamercolor{block body}{bg=fsfwgreen,fg=white}
    \setbeamertemplate{blocks}[rounded][shadow=true]
    \begin{center}

      \begin{block}{}
        \centering
        \vspace*{0.5\baselineskip}
        {\LARGE \textbf{\inserttitle}}\\

        \medskip

        {\Large \textbf{\insertsubtitle}}
        \vspace*{0.5\baselineskip}
      \end{block}

      \bigskip

      {\ccLogo~\ccAttribution~\ccShareAlike}
      \bigskip

      \insertauthor

      \smallskip

      \insertdate

      \smallskip

      \courseURL

      \medskip

      \leavevmode
      \lower0.4cm\hbox{\includegraphics[height=2cm]{pics/fsfw-logo}}
      \parbox[b]{3cm}{\small
        {\footnotesize Hochschulgruppe für}\\
        Freie Software und\\
        Freies Wissen}\\
      {\small\url{https://fsfw-dresden.de}}
    \end{center}

  }}

\setbeamertemplate{frametitle}{
  \vskip0.01\paperheight
  \hskip0.02\textwidth
  \vskip-0.18\paperheight
  \begin{beamercolorbox}[rounded=true,dp=0.5ex,ht=1.5ex,wd=0.96\textwidth]{frametitle}
    \smash{\insertframetitle}
  \end{beamercolorbox}
}

\setbeamertemplate{headline}{
  \hbox{%
    \includegraphics[height=0.12\paperheight]{pics/fsfw-banner}
  }
}
\setbeamercolor{footline}{bg=fsfwblue,fg=white}
\setbeamertemplate{footline}{
  % TODO: Foliennummern hinzufügen
  \hbox{}\hfill\smash{\raise0.1cm\hbox{%
    \fcolorbox{white}{white}{%
      \includegraphics[width=1.3cm]{pics/fsfw-logo-notext}}}
  \hspace*{0.1cm}}
  \hbox{%
    \includegraphics[height=0.12\paperheight]{pics/fsfw-banner}
  }
  \vskip-0.08\paperheight
}

\setbeamertemplate{blocks}[rounded][shadow=false]
\setbeamercolor{block title}{fg=fsfwpurple}
\usetikzlibrary{shapes.multipart}
\setbeamertemplate{items}{\raisebox{0.3ex}{%
    \tikz[scale=0.13] \draw[fill] (0,0) -- (0,1) -- (0.9,0.5) -- cycle;}}
\setbeamertemplate{navigation symbols}{}
\setbeamerfont{title}{series=\bfseries}

\defbeamertemplate{block alerted begin}{bends}{%
  \begin{columns}
    \begin{column}{0.05\linewidth}
      \dbend
    \end{column}
    \begin{column}{0.95\linewidth}
      \vskip.75ex\usebeamercolor[fg]{block title
        alerted}\insertblocktitle{}
      \vskip.1em
      \usebeamercolor[fg]{normal text}
}
\defbeamertemplate{block alerted end}{bends}{%
    \end{column}
  \end{columns}
}

\usetikzlibrary{arrows}
\tikzset{>={stealth'[sep]}}

\AtBeginSection{{
  \setbeamertemplate{blocks}[rounded][shadow=true]
  \setbeamercolor{block body}{bg=fsfwgreen,fg=white}
  \begin{frame}
    \begin{block}{}
      \begin{center}
        \Large\strut\smash{\textbf{\insertsection}}
      \end{center}
    \end{block}
  \end{frame}
}}

%%% misc

\newcommand{\GNULinux}{GNU\lower-0.25ex\hbox{/}Linux}
\newcommand{\TikZ}{Ti\emph{k}Z}

\RequirePackage{listings}
\lstset{language=[LaTeX]TeX, basicstyle=\ttfamily,
  keywordstyle={\color{blue}\bfseries}, frame=tb, extendedchars=true, literate=%
  {ä}{{\"a}}1 {ö}{{\"o}}1, mathescape=true,
  basewidth=0.5em, keywordstyle={},
}