%% ---------------------------------------------------------------------------------------------
%% LaTeX Base Class Reykjavík University Books
%% ---------------------------------------------------------------------------------------------
%% Original Author: Lars Engebretsen (KTH)
%% Source not found on Google, an archived copy [2004/12/14 v2.1 Document Class for KTH Theses] can be found at
%% https://repository.cs.ru.is/svn/thesis-template/trunk/non-ru/kth.se/kthesis/tex/latex/kthesis/kthesis.cls
%% Refactored in 2017 by Gabriel Hjort Blindell <ghb AT kth.se>
%% Source at https://github.com/gablin/ghb-thesis/blob/master/kthesis.cls
%% This has a Creative Commons Attribution-NoDerivatives 4.0
%% <http://creativecommons.org/licenses/by-nc-nd/4.0/> for details).
%% Which means we sadly can't modify it for our use.
%% Refactored from Lars' version on 2022-05-22: Joseph Timothy Foley <foley AT ru.is>
%% Questions, comments, complaints: latex@RU.IS
%% Created on 2022-05-22
%% This code is distributed under the MIT license
%% Details at LICENSE.md
%% --------------- Identification ----------------------------
\NeedsTeXFormat{LaTeX2e}
\newcommand{\fileversion@rubook}{Revision 1.0}
\newcommand{\filedate@rubook}{2022/05/22}% must be YYYY/MM/DD!
\newcommand{\fileauthor@rubook}{Joseph Timothy Foley, foley at RU.IS}
\ProvidesPackage{rubook}[\filedate@rubook by \fileauthor@rubook]
\typeout{Book Class for Reykjavik University \fileversion@rubook <\filedate@rubook>, by \fileauthor@rubook}

\newcommand{\@rubook@setpapersize@afour}{\stockaiv{}}
\newcommand{\@rubook@setpapersize@bfive}{\stockbv{}}
%\def\@rubook@setpapersize@afour{%
%   \setstocksize{297mm}{210mm}
%   \settrimmedsize{297mm}{210mm}{*}
%   \settypeblocksize{49pc}{33pc}{*}}
% \def\@rubook@setpapersize@bfive{%
%   \setstocksize{297mm}{210mm}
%   \settrimmedsize{239mm}{169mm}{*}
%   \setlength{\trimtop}{\stockheight}
%   \addtolength{\trimtop}{-\paperheight}
%   \setlength{\trimtop}{0.5\trimtop}
%   \setlength{\trimedge}{\stockwidth}
%   \addtolength{\trimedge}{-\paperwidth}
%   \ifpdf
%   \AtBeginDocument{%
%     \setlength{\pdfpagewidth}{\stockwidth}
%     \setlength{\pdfpageheight}{\stockheight}}
%   \fi  
%   \settypeblocksize{43pc}{30pc}{*}}

\DeclareOption{g5paper}{\OptionNotUsed}
\DeclareOption{a3paper}{\OptionNotUsed}
\DeclareOption{a4paper}{\def\rubook@papersize{afour}}% paper stock a4
\DeclareOption{a6paper}{\OptionNotUsed}
\DeclareOption{a5paper}{\OptionNotUsed}
\DeclareOption{b3paper}{\OptionNotUsed}
\DeclareOption{b4paper}{\OptionNotUsed}
\DeclareOption{b5paper}{\def\rubook@papersize{bfive}}% paper stock b5
\DeclareOption{b6paper}{\OptionNotUsed}
\DeclareOption{letterpaper}{\OptionNotUsed}
\DeclareOption{legalpaper}{\OptionNotUsed}
\DeclareOption{executivepaper}{\OptionNotUsed}
\DeclareOption{ebook}{\OptionNotUsed}
\DeclareOption{landscape}{\OptionNotUsed}
\DeclareOption*{\PassOptionsToClass{\CurrentOption}{memoir}}
\ExecuteOptions{b5paper}
\ProcessOptions\relax
\LoadClass[a4paper]{memoir}
\@nameuse{@rubook@setpapersize@\rubook@papersize}


%%%%%%%%%%%%%%%% MARGINS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Note: The old MS word template uses even 25.4mm margins which works poorly as a bound book
\setxlvchars{}\setlxvchars{}
%% calculate textblock based upon character size
\trimLmarks{}% trim marks get cut off
\pagebv{}% cut to b5
%\settrims{0pt}{0pt}
\setpageml{\paperheight}{\paperwidth}{*}%page area on middle left for cutting
%\checkandfixthelayout% implement the margins if we weren't using canonic

\RequirePackage{canoniclayout}
%% Canonic layout calculates margins that look nice
%% Based upon a rectangle formed with a circle on the width


%% Some debugging code to check length calculation.
\newcommand{\showlengths@rubook}{
  \uselengthunit{mm} % showlen package
  Lengths: (with round off error from floats)\\
  pagecenterx:\printlength{\pagecenterx}\\
  pagecentery:\printlength{\pagecentery}\\
}
