%% kfu-math.lco
%% author: christian clason (c.clason@uni-graz.at)
%
% scrlttr2 (KOMAscript) template for University of Graz
% implements layout according to corporate design of 2017
% and provides defaults for Institute of Mathematics and Scientific Computing

\ProvidesFile{kfu-math.lco}[2021-03-27 letter class option 'KFU Mathematik']

\RequirePackage{calc}
\RequirePackage{kvoptions}
\SetupKeyvalOptions{
    family = kfu,
    prefix = kfu@
}
\DeclareBoolOption{print}
\ProcessKeyvalOptions*

\RequirePackage{babel}
\RequirePackage{csquotes}
\RequirePackage{fontspec}
\setmainfont[Ligatures=TeX, ExternalLocation,
ItalicFont=FRANKGBOB,
BoldFont=FRANKGD,
BoldItalicFont=FRANKGDOB]{FRANKGB}
\newfontfamily\institutefont[ExternalLocation]{DistProTh}
\RequirePackage{microtype}

\KOMAoptions{paper=a4, parskip=half-, enlargefirstpage=on, subject=left}
\usepackage[left=20mm,right=20mm,bottom=30mm]{geometry}
\@setplength{firstheadvpos}{1cm}
\@setplength{firstheadhpos}{30mm}
\@setplength{firstheadwidth}{170mm}
\@setplength{firstfoothpos}{20mm}
\@setplength{firstfootvpos}{287mm}
\@addtoplength[-5]{firstfootvpos}{\baselineskip}
\@setplength{refhpos}{30mm}
\@setplength{refwidth}{170mm}
\@setplength{sigbeforevskip}{3\baselineskip}
\let\raggedsignature=\raggedright

\ifkfu@print
    \KOMAoptions{foldmarks=true}
\else
    \KOMAoptions{foldmarks=off}
    \KOMAoptions{backaddress=off}
\fi

\RequirePackage{xcolor}
\definecolor{kfu@gray}{gray}{0.5}
\RequirePackage{graphicx}
\RequirePackage[colorlinks=true,urlcolor=black]{hyperref}
\urlstyle{rm}

\newkomavar{myinstitute}
\newkomavar{myuniversity}
\newkomavar{fromtitle}
\newkomavar{emaildomain}
\providecaptionname{english}\myinstitute{Institute of Mathematics and Scientific Computing}
\providecaptionname{ngerman}\myinstitute{Institut für Mathematik und Wissenschaftliches Rechnen}
\providecaptionname{english}\myuniversity{UNIVERSITY OF GRAZ}
\providecaptionname{ngerman}\myuniversity{UNIVERSITÄT GRAZ}
\setkomavar{myinstitute}{\myinstitute}
\setkomavar{myuniversity}{\myuniversity}

\setkomavar{emaildomain}{@uni-graz.at}
\setkomavar{phoneseparator}{:~+43~316~380~}
\providecaptionname{english}\myaddress{Heinrichstrasse 36, 8010 Graz, Austria}
\providecaptionname{ngerman}\myaddress{Heinrichstrasse 36, 8010 Graz}

\setkomavar{fromaddress}{\myaddress}
\setkomavar{backaddressseparator}{~\raisebox{0.25ex}{\textbf{\large.}}~}
\setkomavar{fromfax}{\usekomavar[\faxname]{faxseparator}+43~316~380~9815}
\setkomavar{place}{Graz}

\setkomavar{signature}{\usekomavar{fromtitle}~\usekomavar{fromname}}

\setkomavar{firsthead}{%
    \raggedleft
    \parbox[c]{12cm}{\raggedleft \color{kfu@gray}
        \huge \institutefont UNIVERSITÄT GRAZ\\UNIVERSITY OF GRAZ\\[0.75ex]
        \Large\usekomavar{myinstitute}
    }\hspace{1em}
    \parbox[c]{3cm}{\centering
        \includegraphics[height=2.5cm,keepaspectratio=true]{logo_uni_graz_4c.pdf}
    }
}

\setkomavar{firstfoot}{\small%
    \color{kfu@gray}
    \footnotesize\raggedleft
    \usekomavar{fromtitle}~\usekomavar{fromname}\\
    \usekomavar{fromaddress}\\
    \usekomavar[\phonename]{phoneseparator}\usekomavar{fromphone}\\
    \usekomavar{fromfax}\\
    \usekomavar[\emailname]{emailseparator}\usekomavar{fromemail}\usekomavar{emaildomain}\\
    \pageofpages\hfill
    \begingroup
    \hypersetup{urlcolor=kfu@gray}
    \usekomavar[\url]{fromurl}
    \endgroup
}


\RequirePackage{scrlayer-scrpage}
\RequirePackage{lastpage}
\newcommand{\pageofpages}{%
    \begingroup
    \hypersetup{linkcolor=kfu@gray}
    \@ifundefined{pageof@\languagename}
    {page~\thepage~of~\pageref{LastPage}} % a default
    {\@nameuse{pageof@\languagename}}%
    \endgroup
}
\newcommand{\pageof@ngerman}{Seite~\thepage~von~\pageref{LastPage}}

\DeclareNewLayer[foreground,rightmargin,
contents={\rotatebox{90}{%
        \parbox[b][0.4\layerwidth][b]{0.953\layerheight}{
    \Large\usekomavar[\color{kfu@gray}\institutefont]{myuniversity}}}
}]
{KFUletter.right}
\DeclareNewLayer[foreground,foot,
contents={\color{kfu@gray}\upshape\footnotesize\hfill\pageofpages}]
{KFUletter.outer}
\DeclarePageStyleByLayers{kfuletter}{%
KFUletter.right,KFUletter.outer}
\pagestyle{kfuletter}