Add task environment

RainbowCR.cls

@@ -2,7 +2,7 @@
 \ProvidesClass{RainbowCR}[Compte rendu de CR des Rainbow Swingers]
 
 \LoadClass[a4paper]{article}
-\RequirePackage[margin=2cm,right=4.5cm]{geometry}
+\RequirePackage[margin=2cm,right=4.5cm, marginparwidth=3cm, marginparsep=0.7cm]{geometry}
 \RequirePackage{fontawesome}
 \RequirePackage{amsmath}
 \RequirePackage{amsfonts}
@@ -10,6 +10,8 @@
 \RequirePackage[french]{babel}
 \RequirePackage[shortlabels]{enumitem}
 \RequirePackage{array}
+\RequirePackage[framemethod=tikz]{mdframed}
+\RequirePackage{marginnote}
 
 % Listes
 \setlist[itemize]{label=\textbullet}
@@ -62,3 +64,38 @@
 
     \vspace{2em}
 }
+
+
+% Tasks
+\definecolor{taskbarcolor}{RGB}{172,70,255}
+\definecolor{tasktextcolor}{RGB}{90,36,132}
+\newmdenv[
+    linewidth=0.3mm,
+    linecolor=taskbarcolor,
+    bottomline=false,topline=false,leftline=false,
+    rightmargin=-4.3mm,
+    innerrightmargin=4mm,
+    leftmargin=0pt, innerleftmargin=0pt,
+    skipabove=0.5em, innertopmargin=0.3em,
+    skipbelow=0.5em, innerbottommargin=0.3em,
+]{taskbar}
+\newenvironment{task}[1][À définir]{
+
+    \ifchoristes\else%
+    \marginnote{~\\\vspace{-10pt}\raggedright{}\color{tasktextcolor}#1}
+    \begin{taskbar}%
+    \fi
+}
+{
+    \ifchoristes\else\end{taskbar}\fi
+}
+
+% Patch the task environment with indentation
+% Thanks https://tex.stackexchange.com/a/207364
+\makeatletter
+\newcommand{\indentforlinedintro}{%
+  \patchcmd\mdf@lrbox{\parindent\z@}{\parindent\normalparindent\relax}{}{}%
+  \patchcmd\mdf@trivlist{\itemindent\z@}{\itemindent\normalparindent}{}{}%
+}
+\patchcmd{\task}{\begin}{\indentforlinedintro\begin}{}{}
+\makeatother