% \iffalse meta-comment
%
% RWTH-CI -- Corporate Design for RWTH Aachen University
% ----------------------------------------------------------------------------
%
%  Copyright (C) 2025–2026 by Marei Peischl <rwth-ci@peitex.de> and Lukas C. Bossert
%
% ============================================================================
% This work may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either version 1.3c
% of this license or (at your option) any later version.
% The latest version of this license is in
% http://www.latex-project.org/lppl.txt
% and version 1.3c or later is part of all distributions of LaTeX
% version 2008/05/04 or later.
%
% This work has the LPPL maintenance status `maintained'.
%
% The Current Maintainer of this work is
%   Marei Peischl rwth-ci@peitex.de
%
% The development repository can be found at
% https://gitlab.git.nrw/rwth-it-center/rwth-latex-templates/rwth-ci
% Please use the issue tracker for feedback!
%
% ============================================================================
%
% \fi
% \iffalse
%<*driver>
\ProvidesFile{rwth-colors.dtx}
  [2026-04-03 v1.2 Color setup for RWTH-CI, Corporate Design of RWTH Aachen University]
%</driver>
%<@@=ptxcd>
%<*identification>
\NeedsTeXFormat{LaTeX2e}[2022-10-01]
%<package>\ProvidesExplPackage{rwth-colors}{2026-04-03}{1.2}{Color setup for RWTH-CI}
%</identification>
%<*driver>
\providecommand*{\PtxcdDocDTXfiles}{rwth-colors.dtx}
\providecommand*{\PtxcdDocTitle}{\pkg{rwth-colors}~--~\LaTeX{}~color~setup~for~RWTH-CI}
\input{rwth-ci.dtx}
%</driver>
% \fi
% \begin{documentation}
% \section{Color setup – \pkg{rwth-colors.sty}}
% The colors setup is done using the \pkg{xcolor} package.
% All mechanims described in the corresponding documentation may be used.
%
% All design specific colors are defined according to the guideline \cite{rwth-ci-guideline}.
% The predefined colors are listed below:
%
% \begingroup
% \raggedright
% \ExplSyntaxOn
% \renewcommand*{\definecolor}[3]{
%   \if_mode_vertical:
%   \bool_set_true:N \l_tmpa_bool
%   \tl_range:nnn {#1} {1} {-5}\hfill
%   \tl_range:nnn {#1} {-4} {-1}\space
%   \else:
%   \quad\tl_range:nnn {#1} {-3} {-1}\space
%   \fi:
%   \textcolor{#1}{\rule{1cm}{\ht\strutbox}}
% }
% \begingroup\cctab_select:N \c_document_cctab \input{rwthcolors.def}\endgroup
% \ExplSyntaxOff
% \endgroup
%
% \bigskip
% \noindent As one might realize the shadings are defined directly.
% Those should be used to stick to the CI guideline \cite{rwth-ci-guideline} instead of using the color mixing provided by \pkg{xcolor}.
% \end{documentation}
% \begin{implementation}
% \iffalse
%<*declareoptions>
% \fi
%    \begin{macrocode}
\tl_new:N \g_@@_colormode_tl
\keys_define:nn {ptxcd/colors} {
%    \end{macrocode}
% \iffalse
%</declareoptions>
%<*options>
% \fi
% \end{implementation}
% \begin{documentation}
% \subsection{Package specific options}
% \DescribeKeyOption*{colormode=cmyk/RGB}{Depends on document type}*
% \label{sec:colormode}
% The colormode can be selected to overwrite the default setting.
% Please be aware, that there is a difference in casing and \code{RGB} has to be used uppercase and \code{cmyk} lowercase.
% Internally the values between uppercase and lowercase model names would differ.
% \end{documentation}
% \begin{implementation}
% \begin{optionenv}{colormode}
%    \begin{macrocode}
  colormode .choices:nn = {cmyk,RGB}{
      \@ifpackageloaded{xcolor}{
        \selectcolormodel{\l_keys_value_tl}
      }{
        \exp_args:No \PassOptionsToPackage{\l_keys_value_tl}{xcolor}
        \tl_gset:Ne \g_@@_colormode_tl {\str_lowercase:f {\l_keys_value_tl}}
      }
    },
  colormode .usage:n = load,
  RGB .meta:n = {colormode=RGB},
  cmyk .meta:n = {colormode=cmyk},
%    \end{macrocode}
% \end{optionenv}
%    \begin{macrocode}
}
\ProcessKeyOptions[ptxcd/colors]
\RequirePackage{xcolor}

\input{rwthcolors.def}
%    \end{macrocode}
% \iffalse
%</options>
%<*package&body>
% \fi
%    \begin{macrocode}

%    \end{macrocode}
% \iffalse
%</package&body>
% \fi
% \end{implementation}
% \Finale
\endinput