% ..............................................................................
% This file defines the color scheme for the diffferent institutions of the FAU, 
% accoridng to the corporate style guide 2021, see 
%
% https://www.intern.fau.de/kommunikation-marketing-und-corporate-identity/corporate-identity/
%
%
% for use with LaTeX.
%
% 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/fau-colors}
\RequirePackage{xcolor}

\newcounter{faucolors@institutecounter}\setcounter{faucolors@institutecounter}{-1}
\newif\iffaucolors@isFAU\faucolors@isFAUtrue
\newif\iffaucolors@isPhil\faucolors@isPhilfalse
\newif\iffaucolors@isRW\faucolors@isRWfalse
\newif\iffaucolors@isMed\faucolors@isMedfalse
\newif\iffaucolors@isNat\faucolors@isNatfalse
\newif\iffaucolors@isTech\faucolors@isTechfalse

\DeclareOption{FAU}{%
  \faucolors@isFAUtrue
  \stepcounter{faucolors@institutecounter}
}
\DeclareOption{Phil}{%
  \faucolors@isPhiltrue
  \stepcounter{faucolors@institutecounter}
}
\DeclareOption{RW}{%
  \faucolors@isRWtrue
  \stepcounter{faucolors@institutecounter}
}
\DeclareOption{Med}{%
  \faucolors@isMedtrue
  \stepcounter{faucolors@institutecounter}
}
\DeclareOption{Nat}{%
  \faucolors@isNattrue
  \stepcounter{faucolors@institutecounter}
}
\DeclareOption{Tech}{%
  \faucolors@isTechtrue
  \stepcounter{faucolors@institutecounter}
}
\ProcessOptions\relax

\ifnum\value{faucolors@institutecounter}>0
  \PackageError{fau-colors}{Options 'FAU', 'Phil', 'RW', 'Med', 'Nat', and 'Tech' are mutually exclusive. Please only specify one of these options.}{}
\fi

% ..............................................................................
% Define the colors and their respective dark versions for each institute.
% ------------------------------------------------------------------------------

% FAU University colors
\definecolor{FAUBlue}{RGB}{0,47,108}
\definecolor{FAUDarkBlue}{RGB}{4,30,66}

% Phil colors
\definecolor{PhilYellow}{RGB}{255, 184, 28}
\definecolor{PhilOrange}{RGB}{232, 119, 34}

% RW colors
\definecolor{RWRed}{RGB}{200, 16, 46}
\definecolor{RWDarkRed}{RGB}{151,27,47}

% Med colors
\definecolor{MedBlue}{RGB}{0, 163, 224}
\definecolor{MedDarkBlue}{RGB}{0, 97, 160}

% Nat colors
\definecolor{NatGreen}{RGB}{67, 176, 42}
\definecolor{NatDarkGreen}{RGB}{34, 136, 72}

% Tech colors
\definecolor{TechMetallic}{RGB}{119, 159, 181}
\definecolor{TechDarkMetallic}{RGB}{65, 116, 141}

% ..............................................................................
% Assign the colors 
% 	- BaseColor
%	- BaseDarkColor
% according to the specified institute.
% ------------------------------------------------------------------------------
\colorlet{TitleFont}{white}

\iffaucolors@isFAU
  \colorlet{BaseColor}{FAUBlue}
  \colorlet{BaseDarkColor}{FAUDarkBlue}
  \colorlet{SeparationLineColor}{BaseColor!62.5}
\fi

\iffaucolors@isPhil
  \colorlet{BaseColor}{PhilYellow}
  \colorlet{BaseDarkColor}{PhilOrange}
  \colorlet{SeparationLineColor}{PhilOrange}
  \colorlet{TitleFont}{black}
\fi

\iffaucolors@isRW
  \colorlet{BaseColor}{RWRed}
  \colorlet{BaseDarkColor}{RWDarkRed}
  \colorlet{SeparationLineColor}{RWDarkRed}
\fi

\iffaucolors@isMed
  \colorlet{BaseColor}{MedBlue}
  \colorlet{BaseDarkColor}{MedDarkBlue}
  \colorlet{SeparationLineColor}{MedDarkBlue}
\fi

\iffaucolors@isNat
  \colorlet{BaseColor}{NatGreen}
  \colorlet{BaseDarkColor}{NatDarkGreen}
  \colorlet{SeparationLineColor}{NatDarkGreen}
\fi

\iffaucolors@isTech
  \colorlet{BaseColor}{TechMetallic}
  \colorlet{BaseDarkColor}{TechDarkMetallic}
  \colorlet{SeparationLineColor}{TechDarkMetallic}
\fi

% ..............................................................................
% Define different shades for BaseColor and BaseDarkColor
% ------------------------------------------------------------------------------
%
\colorlet{BaseColorA}{BaseColor!62.5}
\colorlet{BaseColorB}{BaseColor!37.5}
\colorlet{BaseColorC}{BaseColor!25.0}
\colorlet{BaseColorD}{BaseColor!12.5}

\colorlet{BaseDarkColorA}{BaseDarkColor!62.5}
\colorlet{BaseDarkColorB}{BaseDarkColor!37.5}
\colorlet{BaseDarkColorC}{BaseDarkColor!25.0}
\colorlet{BaseDarkColorD}{BaseDarkColor!12.5}