\NeedsTeXFormat{LaTeX2e}
\ProvidesClass{cours}[2019/01/09 LaTeX class for Lessons]
\makeatletter
% Base Class

\DeclareOption*{\PassOptionsToClass{\CurrentOption}{book}}


\ProcessOptions\relax
% Main packages

\LoadClass[12pt,a4paper,french,titlepage]{book}


\RequirePackage[french]{babel} % pour ecrire en francais
\RequirePackage[left=2.00cm, right=2.00cm, top=3.00cm, bottom=3.00cm]{geometry} % la mise en page

% Packages
\RequirePackage[utf8]{inputenc} % encodage

\RequirePackage{fancyhdr} % la mise en page
\RequirePackage[dvipsnames,x11names]{xcolor} % Un peu de couleur !
\RequirePackage{float}
\RequirePackage{subcaption}
\RequirePackage{subfiles}

\RequirePackage{hyperref}
\hypersetup{
    bookmarks=true,          % show bookmarks bar?
    unicode=true,            % non-Latin characters in Acrobat’s bookmarks
    pdftoolbar=true,         % show Acrobat’s toolbar?
    pdfmenubar=true,         % show Acrobat’s menu?
    pdffitwindow=false,      % window fit to page when opened
    pdfstartview={FitH},     % fits the width of the page to the window
    pdftitle=\@title,      % title
    pdfauthor=\@author,    % author
    colorlinks=true,         % false: boxed links; true: colored links
    linkcolor=black,      % color of internal links
    citecolor=OliveGreen,    % color of links to bibliography
    filecolor=magenta,       % color of file links
    urlcolor=BlueViolet      % color of external links
}



\RequirePackage{tikz}
\usetikzlibrary{fit}
\usetikzlibrary{positioning}
\RequirePackage{schemabloc}


\usepackage[european,cuteinductors,siunitx,straightvoltages]{circuitikz}
\tikzset{every picture/.style={execute at begin picture={\shorthandoff{:;!?};}}}
\usetikzlibrary{positioning, fit, calc}

\RequirePackage{pgfplots}
\RequirePackage{mathtools}
\RequirePackage{amsfonts}
\RequirePackage{mathrsfs}
\RequirePackage{amssymb}
\RequirePackage[section]{placeins} % Oblige a placer toutes les figures avant de passer a la section suivante

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%% Custom title Page %%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\def\teacher#1{\gdef\@teacher{#1}}
\def\module#1{\gdef\@module{#1}}

\renewcommand{\maketitle}{%
  \begin{titlepage}
		\centering
		{\huge \textsc{M1 E3A - Voie André Ampère}}
		\vspace{1cm}
        % \includegraphics[height=4cm]{Saphire} \\
        \vfill
        \@ifundefined{@module}
        {}
        {%
        {\LARGE \textsc{Module \@module}}\\
        }
        \vspace{1cm}\vfill
        \@ifundefined{@title}
        {}
 		{{\Huge \textbf{\@title}}}
 		\vfill
        \@ifundefined{@author}
        {}{%
          {\Large
            \underline{Un cours de :}\\ \vspace{1em}
            \textsc{\@teacher} \\ \vspace{0.5cm}
            \underline{Rédigé et complété par :} \\ \vspace{1em}
            \textsc{\@author}}
 		\vfill}
        \@ifundefined\@date{}{%
 		{\LARGE Version du \@date}
 		\vfill}
%       \includegraphics[width=6cm]{ENSPS}
%		\hfill
%		\includegraphics[width=6cm]{UPS}
	\end{titlepage}}

% pas de début de section dans la moitié inférieure d'une page

  \RequirePackage{needspace}

  \renewcommand{\section}{
    \needspace{0.3\textheight}%
    \@startsection {section}{1}{\z@}%
	{-3.5ex \@plus -1ex \@minus -.2ex}%
	{2.3ex \@plus.2ex}%
	{\reset@font\Large\bfseries}}
\raggedbottom

\setcounter{secnumdepth}{3}
\renewcommand{\thesection}{\arabic{section}}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%% BOITES %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


\RequirePackage{tikz,environ}
\tikzstyle{mybox} = [draw=black, very thick,
    rectangle, inner sep=10pt, inner ysep=20pt]
\tikzstyle{fancytitle} = [draw=black, fill=white, text=black]

\NewEnviron{defin}{\par
\begin{center}
\begin{tikzpicture}
\node [mybox] (box){%
    \begin{minipage}{0.8\textwidth}
    	\BODY
	\end{minipage} };
\node[fancytitle, right=10pt] at (box.north west) {\textbf{Définition}};
\end{tikzpicture}\end{center}\par
}

% \NewEnviron{thm}{\par
% \begin{center}
% \begin{tikzpicture}
% \node [mybox] (box){%
%     \begin{minipage}{0.8\textwidth}
%     	\BODY
% 	\end{minipage} };
% \node[fancytitle, right=10pt] at (box.north west) {\textbf{Théorème}};
% \end{tikzpicture}\end{center}\par
%}

\RequirePackage{thmbox}
\RequirePackage{xparse}
\NewDocumentEnvironment{prop}{o}{%
\begin{center}\begin{minipage}{0.8\textwidth}
  \thmbox[M]{\textbf{Proposition \IfNoValueTF{#1}{}{\em (#1)}}}%
  %\hspace*{-1.5em}%
  }
  {%
  \endthmbox\vspace*{.75ex}\end{minipage}\end{center}%
  }

\NewDocumentEnvironment{thm}{o}{%
\begin{center}\begin{minipage}{0.8\textwidth}
  \thmbox[M]{\textbf{Théorème \IfNoValueTF{#1}{}{\em (#1)}}}%
  %\hspace*{-1.5em}%
  }
  {%
  \endthmbox\vspace*{.75ex}\end{minipage}\end{center}%
  }


\NewDocumentEnvironment{corol}{o}{%
	\begin{center}\begin{minipage}{0.8\textwidth}
			\thmbox[M]{\textbf{Corollaire \IfNoValueTF{#1}{}{\em (#1)}}}%
			%\hspace*{-1.5em}%
		}
		{%
			\endthmbox\vspace*{.75ex}\end{minipage}\end{center}%
}

\NewDocumentEnvironment{lemEM}{o}{%
	\begin{center}\begin{minipage}{0.8\textwidth}
			\thmbox[M]{\textbf{Lemme ergodique maximal \IfNoValueTF{#1}{}{\em (#1)}}}%
			%\hspace*{-1.5em}%
		}
		{%
			\endthmbox\vspace*{.75ex}\end{minipage}\end{center}%
}

\newenvironment{rem}{\par\textbf{Remarque: }\nopagebreak}{\par}
\newenvironment{exemple}{\par\textbf{Exemple: }\nopagebreak}{\par}
\newenvironment{preuve}{\par\textit{Démonstration: }\nopagebreak}{\par}