Class for lecture notes

notes.tex

\ProvidesClass{notes}

% Color
\RequirePackage{color}

% Maths
\RequirePackage{amsmath}
\RequirePackage{amssymb}

% Inherit from article
\LoadClass[11pt]{article}

% In french
% Change that to \RequirePackage[langage]{babel} if you're using latex and not xe(la)tex
\RequirePackage{polyglossia}
\setdefaultlanguage{french}

% Load graphics
\RequirePackage{graphicx}

% \maketitle on multiple pages
\RequirePackage{titling}
\setlength{\droptitle}{-1in}

% Headers
\RequirePackage{fancyhdr}
\lhead{Corentin Cadiou}
\chead{Exercice n°\theexo}
\rhead{\@title}

% Comment
\RequirePackage{verbatim} 
% Support for simple logic
\RequirePackage{ifthen}

% For more beautiful drawings>
\RequirePackage{tikz}
\RequirePackage{amssymb}
\RequirePackage{framed}

\RequirePackage{varwidth} % see
                      % https://tex.stackexchange.com/questions/46475/can-we-define-maximum-width-for-a-node


% Initialize counters
\newcounter{exo}
\newcounter{misc}


% New commands
\newcommand{\un}[1]{\ \mathrm{#1}}
\newcommand{\E}[1]{\cdot 10^{#1}}
\newcommand{\mean}[1]{\left< #1 \right>}

% Some customization about the page layout
\renewcommand{\headrulewidth}{0.4pt}
\renewcommand{\footrulewidth}{0.4pt}
\pagestyle{fancy}

% Fancy environement
% Inspired from http://www.texample.net/tikz/examples/framed-tikz/
\usetikzlibrary{automata,positioning,calc,decorations.pathmorphing}

\pgfdeclarelayer{background}
\pgfsetlayers{background,main}

\def\parchmentframe#1{
\tikz{
  \node[inner sep=1em] (A) {#1};  % Draw the text of the node
  \begin{pgfonlayer}{background}  % Draw the shape behind
  \fill[normal border, rounded corners=2pt] 
        (A.north east) rectangle (A.south west);
  \draw[regular border]
        ($(A.north west) + (1em,0)$) --
        ($(A.north west) + (2pt,0)$) arc (90:180:2pt) --
        ($(A.south west) + (0,2pt)$) arc (180:270:2pt) --
        ($(A.south west) + (1em,0)$);
  \end{pgfonlayer}}}

\def\parchmentframetop#1{
\tikz{
  \node[inner sep=1em] (A) {#1};    % Draw the text of the node
  \begin{pgfonlayer}{background}    
  \draw[regular border]
        ($(A.north west) + (1em,0)$) --
        ($(A.north west) + (2pt,0)$) arc (90:180:2pt) --
        ($(A.south west) + (0,.2)$) ;
  \fill[normal border] 
        ($(A.south east) + (0,.2)$) --
        ($(A.north east) - (0,2pt)$) arc (0:90:2pt) --
        ($(A.north west) + (2pt,0)$) arc (90:180:2pt) --
        ($(A.south west) + (0,.2)$);
  \fill[torn border]                % Add the torn lower border
        ($(A.south east)-(0,.2)$) -- ($(A.south west)-(0,.2)$) -- 
        ($(A.south west)+(0,.2)$) -- ($(A.south east)+(0,.2)$) --
        cycle;
  \draw[extreme border]
        ($(A.south west)+(0,0.5em)$) --
        ($(A.south west)-(0,0.5em)$);

  \end{pgfonlayer}}}

\def\parchmentframebottom#1{
\tikz{
  \node[inner sep=1em] (A) {#1};   % Draw the text of the node
  \begin{pgfonlayer}{background}   
  \fill[normal border]             % Draw the ``complete shape'' behind
        (A.north west) -- 
        ($(A.south west) + (0,2pt)$) arc (180:270:2pt) --
        ($(A.south east) - (2pt,0)$) arc (270:360:2pt) --
        (A.north east);
  \fill[torn border]               % Add the torn upper border
        ($(A.north east)-(0,.5em)$) -- ($(A.north west)-(0,.5em)$) -- 
        ($(A.north west)+(0,.5em)$) -- ($(A.north east)+(0,.5em)$) --
        cycle;
  \draw [extreme border]
        ($(A.north west)+(0,0.5em)$) -- ($(A.north west)-(0,0.5em)$);
  \draw [regular border]
        ($(A.north west)-(0,0.5em)$) --
        ($(A.south west) + (0,2pt)$) arc (180:270:2pt) --
        ($(A.south west) + (1.em,0)$);
  \end{pgfonlayer}}}

\def\parchmentframemiddle#1{
\tikz{
  \node[inner sep=1em] (A) {#1};   % Draw the text of the node
  \begin{pgfonlayer}{background}   
  \fill[normal border]             % Draw the ``complete shape'' behind
        (A.south east) -- (A.south west) -- 
        (A.north west) -- (A.north east) -- cycle;
  \fill[torn border]               % Add the torn lower border
        ($(A.south east)-(0,.5em)$) -- ($(A.south west)-(0,.5em)$) -- 
        ($(A.south west)+(0,.5em)$) -- ($(A.south east)+(0,.5em)$) -- cycle;
  \fill[torn border]               % Add the torn upper border
        ($(A.north east)-(0,.5em)$) -- ($(A.north west)-(0,.5em)$) -- 
        ($(A.north west)+(0,.5em)$) -- ($(A.north east)+(0,.5em)$) --
        cycle;
  \draw[extreme border]
        ($(A.north west)-(0,.5em)$) -- ($(A.north west)+(0,.5em)$);
  \draw[regular border]
        ($(A.north west)-(0,.5em)$) -- ($(A.south west)+(0,.5em)$);
  \draw[extreme border]
        ($(A.south west)-(0,.5em)$) -- ($(A.south west)+(0,.5em)$);
  \end{pgfonlayer}}}

% To use it, do 
%    \newcustomexample{example}{Example}
%    \begin{example}[foo]
%      Foo is not bar!
%    \end{example}

\newcommand{\newcustomexample}[2]{
  \newenvironment{#1}[1][]{%
    \tikzset{
      normal border/.style={green!30!black!5, decorate},
      torn border/.style={green!30!black!2, decorate},
      extreme border/.style={black!30, dash pattern=on 1pt off 1pt},
      regular border/.style={black!30}}
    \stepcounter{misc}%
    \vspace\baselineskip%
    \def\FrameCommand{\parchmentframe}%
    \def\FirstFrameCommand{\parchmentframetop}%
    \def\LastFrameCommand{\parchmentframebottom}%
    \def\MidFrameCommand{\parchmentframemiddle}%
    \MakeFramed{\FrameRestore}
    \noindent\tikz\node[inner sep=1ex, rounded corners=1pt,draw=black!30,fill=white, 
    anchor=west, overlay] at (0em, 1em)
    {\begin{varwidth}{\textwidth}
        \textbf{\ifthenelse{\equal{##1}{}}{#2 \themisc}{#2
            \themisc\ -- ##1}}
      \end{varwidth}
    };\par\noindent
  }%
  {\endMakeFramed}
}

\newcommand{\newcustomdef}[2]{
  \newenvironment{#1}[1][]{%
    \tikzset{
      normal border/.style={blue!30!black!5, decorate},
      torn border/.style={blue!30!black!2, decorate},
      extreme border/.style={black!30, dash pattern=on 1pt off 1pt},
      regular border/.style={black!30}}
  
    \stepcounter{misc}%
    \vspace\baselineskip%
    \def\FrameCommand{\parchmentframe}%
    \def\FirstFrameCommand{\parchmentframetop}%
    \def\LastFrameCommand{\parchmentframebottom}%
    \def\MidFrameCommand{\parchmentframemiddle}%
    \MakeFramed{\FrameRestore}
    \noindent\tikz\node[inner sep=1ex, rounded corners=1pt, draw=black!30,fill=white, 
    anchor=west, overlay] at (0em, 1em)
    {\begin{varwidth}{\textwidth}
        \textbf{\ifthenelse{\equal{##1}{}}{#2 \themisc}{#2
            \themisc\ -- ##1}}
      \end{varwidth}
    };\par\noindent
  }%
  {\endMakeFramed}
}

\newcommand{\newcustommisc}[2]{
  \newenvironment{#1}[1][]{%
    \tikzset{
      normal border/.style={black!30!black!5, decorate},
      torn border/.style={black!30!black!2, decorate},
      extreme border/.style={black!30, dash pattern=on 1pt off 1pt},
      regular border/.style={black!30}}

    \stepcounter{misc}%
    \vspace\baselineskip%
    \def\FrameCommand{\parchmentframe}%
    \def\FirstFrameCommand{\parchmentframetop}%
    \def\LastFrameCommand{\parchmentframebottom}%
    \def\MidFrameCommand{\parchmentframemiddle}%
    \MakeFramed{\FrameRestore}
    \noindent\tikz\node[inner sep=1ex, rounded corners=1pt, draw=black!30,fill=white, 
    anchor=west, overlay] at (0em, 1em)
    {\begin{varwidth}{\textwidth}
        \textbf{\ifthenelse{\equal{##1}{}}{#2 \themisc}{#2
            \themisc\ -- ##1}}
      \end{varwidth}
    };\par\noindent
  }%
  {\endMakeFramed}
}