titlesec interferes with the part title in TOC

Question

In this answer, I designed a simple TOC style. However, I find the TOC setting for part doesn't work normally if the title format for \part has been modified by titlesec.

Without \titleformat{\part}, the TOC looks like (which is the desired result):

However, with \titleformat{\part}, the TOC becomes:

How can I get the desired effect back?

Below is a MWE.

\documentclass{book}
% \usepackage{titlesec}
% \titleclass{\part}{top} % make part like a chapter
% \titleformat{\part}[display]
%     {\filleft}
%     {\MakeUppercase{\partname}~\thepart}
%     {1em}
%     {\MakeUppercase}
\usepackage{etoolbox}
\makeatletter
\patchcmd@part% change the part style
  {\addcontentsline{toc}{part}{\thepart\hspace{1em}#1}}
  {\addcontentsline{toc}{part}{\protect\numberline{\texorpdfstring{-~\thepart~-}{\thepart~}}\texorpdfstring{\\MakeUppercase{#1}}{#1}}}
  {}{\FAIL}
\makeatother
\usepackage{titletoc}
\titlecontents{part}
    [0em]
    {\addvspace{1.5pc}\filcenter}
    {\thecontentslabel}
    {}
    {} % without page number
    [\addvspace{.5pc}]
\usepackage[hidelinks,linktoc=all]{hyperref}
\begin{document}
\ttfamily
\tableofcontents
\part{First part}
\end{document}

egreg · Accepted Answer · 2021-02-08T08:48:51.677

3

You need the newparttoc option and to change the rendering of \thecontentslabel.

\documentclass{book}
\usepackage[newparttoc]{titlesec}
\titleclass{\part}{top} % make part like a chapter
\titleformat{\part}[display]
    {\filleft}
    {\MakeUppercase{\partname}~\thepart}
    {1em}
    {\MakeUppercase}
\usepackage{titletoc}
\titlecontents{part}
    [0em]
    {\addvspace{1.5pc}\filcenter}
    {- \thecontentslabel\ - \}
    {}
    {} % without page number
    [\addvspace{.5pc}]
\usepackage[hidelinks,linktoc=all]{hyperref}
\begin{document}
\ttfamily
\tableofcontents
\part{First part}
\end{document}

Suppose you want to process the contents in the toc. You can do something like

\titlecontents{part}
    [0em]
    {\addvspace{1.5pc}\filcenter}
    {\formattocpart} % numbered
    {} % unnumbered
    {} % filler
    [\addvspace{.5pc}]
\newcommand\formattocpart[1]{%
  \colorbox{red!60!green}{%
    \begin{tabular}{@{}c@{}}
    - \thecontentslabel\ - \
    #1
    \end{tabular}%
  }%
}

The second and third mandatory arguments to \titlecontents are similar to the last mandatory argument to \titleformat.

edited Feb 08 '21 at 08:48

answered Feb 07 '21 at 14:43

egreg

1,121,712

With this method one seems to lose access to the title (First part). Can I somehow put it into a color box which, as I understand, only may be done by access to #1? – Jinwen Feb 08 '21 at 00:38
@Jinwen what precisely do you want to color? – egreg Feb 08 '21 at 08:23
Actually I want to put the title into a box to control its width. – Jinwen Feb 08 '21 at 08:25
@Jinwen In the toc or in the actual part title? – egreg Feb 08 '21 at 08:28
Just in the toc. To be precise, I wish to mimic the look of a typewriter, making sure all the characters are vertically aligned, thus sometimes the text needs to shift a half width of one character. – Jinwen Feb 08 '21 at 08:31
Perhaps this is too off-topic, I'll consider opening a new question on it. Anyway, thanks for your useful answer. – Jinwen Feb 08 '21 at 08:44
@Jinwen I added an example, see page 15 of the titlesec manual. – egreg Feb 08 '21 at 08:50

titlesec interferes with the part title in TOC

1 Answers1