Customise table of contents

Question

I'm trying to customise my table of contents. I would like to set a colour for each of my sections, as you can see in the image below. Purple for activity, teal for lessons, and blue for exercices.

I'm just adding a counter to the definition of l@section to do that :

\documentclass[11pt,a4paper,french]{book}
\usepackage{xstring}
\usepackage{titlesec}
\usepackage{tikz}

\newcounter{colorCounter}

\makeatletter

\renewcommand*\l@section[2]{%
\refstepcounter{colorCounter}
\ifnum\c@tocdepth>\m@ne
\addpenalty{-\@highpenalty}%
\vskip 1.0em \@plus\p@
\setlength\@tempdima{1.5em}%
\begingroup
   \parindent \z@ \rightskip \@pnumwidth
   \parfillskip -\@pnumwidth
   \leavevmode \bfseries \large
   \advance\leftskip\@tempdima
   \hskip -\leftskip
      \IfStrEq{\thecolorCounter}{1}{
      \def\@linkcolor{purple!75}}{}
      \IfStrEq{\thecolorCounter}{2}{
      \def\@linkcolor{teal!75}}{}
      \IfStrEq{\thecolorCounter}{3}{
      \def\@linkcolor{blue!75}}{}
          \begin{tikzpicture}
             \node[fill=\@linkcolor,text=white] {};
          \end{tikzpicture}%}
     \color{\@linkcolor}#1
     \nobreak\
     \leaders\hbox{$\m@th
     \mkern \@dotsep mu\hbox{.}\mkern \@dotsep
     mu$}\hfil\nobreak\hb@xt@\@pnumwidth{\hss
     \color{\@linkcolor}#2}\par
     \penalty\@highpenalty
     \ifnum\value{colorCounter}=3 \setcounter{colorCounter}{0}\fi
\endgroup
\medskip
\fi}   

\def\section{\secdef\@section\@ssection}

\def\@section[#1]#2{%
\addcontentsline{toc}{section}{#2}}

\makeatother

\begin{document}
\tableofcontents
\newpage
\chapter{Probability}
\section{Activity}
bla
\section{Cours}
bla
\section{Exercices}
bla
\chapter{Tableur}
\section{Exercices}
bla
\end{document}

Except that, If I don't have an "Activity" section or a "lesson" section, it's not the good colour any more !

Can you please make a compilable minimal working example (MWE)? — samcarter_is_at_topanswers.xyz, Jun 10 '17 at 20:47
Wouldn't it be better to use a new command \lesson that sets the lesson title as well as the toc entry? Avoids the akward if construction. — Johannes_B, Jun 11 '17 at 06:45
I tried to, but dots and page numbers are in black in the toc. — Yohann29100, Jun 11 '17 at 11:48

samcarter_is_at_topanswers.xyz · Accepted Answer · 2017-06-13T15:54:01.453

Based on Change images in custom ToC

This basically smuggles the colour changing instructions into the toc:

\documentclass[11pt,a4paper]{book}
\usepackage{xstring}
\usepackage{titlesec}
\usepackage{tikz}

\makeatletter

\renewcommand*\l@section[2]{%
\ifnum\c@tocdepth>\m@ne
\addpenalty{-\@highpenalty}%
\vskip 1.0em \@plus\p@
\setlength\@tempdima{1.5em}%
\begingroup
   \parindent \z@ \rightskip \@pnumwidth
   \parfillskip -\@pnumwidth
   \leavevmode \bfseries \large
   \advance\leftskip\@tempdima
   \hskip -\leftskip
     \sectoccolor\rule{1.7ex}{1.7ex}~#1
     \nobreak\
     \leaders\hbox{$\m@th
     \mkern \@dotsep mu\hbox{.}\mkern \@dotsep
     mu$}\hfil\nobreak\hb@xt@\@pnumwidth{\hss
     \sectoccolor#2}\par
     \penalty\@highpenalty
\endgroup
\medskip
\fi}   

\def\section{\secdef\@section\@ssection}

\def\@section[#1]#2{%
\addcontentsline{toc}{section}{#2}}

\makeatother

\newcommand*{\setsectoccolor}[1]{\addtocontents{toc}{\gdef\string\sectoccolor{\protect#1}}}  

\setsectoccolor{\color{black}} 

\newcommand{\Activity}{%
    \setsectoccolor{\color{purple!75}}%
    \section{Activity}%
    \setsectoccolor{\color{black}}%
}

\newcommand{\Course}{%
    \setsectoccolor{\color{teal!75}}%
    \section{Course}%
    \setsectoccolor{\color{black}}%
}

\newcommand{\Exercices}{%
    \setsectoccolor{\color{blue!75}}%
    \section{Exercices}%
    \setsectoccolor{\color{black}}%
}

\begin{document}
\tableofcontents
\newpage
\chapter{Probability}

\Activity
bla
\Course
bla
\Exercices
bla
\chapter{Tableur}
\Exercices
bla

\setsectoccolor{\color{orange!75}}%
\section{some other section}
\setsectoccolor{\color{black}}%

\end{document}

(maybe it would be enough to smuggle the colour name into the toc, but as the above seems to work, I did not investigate further)

Customise table of contents

1 Answers1

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