Table of Contents: Nice Titles for Parts

Question

I have some long titles for Parts in a {book} file.

In TOC I receive the following:

I Paaaaaaaaaaaaaaa

aaaaaaaaaaaaaaaaaaart    pagenum

And I would like to have it like the following:

I Paaaaaaaaaaaaaaa

     aaaaaaaaaaaaaaaaaaart    pagenum

(so, I want to have some space in the second line before the text)

Do you have any ideas how to do it? I tried to add \hspace{} in title, but it does not help.

LaTeX makes it in such format for chapters and sections, but not for Parts.

Another small question: I use tocloft package for design. I wanted to add the word Part before the numbers of parts in TOC (f.e. using \cftpartpresnum), but I want to add it only for numbered parts. For example I want to have:

Intro ..... 1
Part I Lalala ...2
Part II Lalalala...4
Conclusion ....6

Is it possible? \cftpartpresnum adds to all parts.

Answer 1

You can achieve what you want, without using tocloft, by redefining the \@part and \l@part commands (the latter actually typesets the part entries in the ToC); here's an example of such redefinition (I wasn't sure of the desired alignment and indentation, but you can easily change these settings):

\documentclass{book}

\makeatletter
\def\@part[#1]#2{%
    \ifnum \c@secnumdepth >-2\relax
      \refstepcounter{part}%
      \addcontentsline{toc}{part}{\protect\numberline{\thepart}#1}%NEW
    \else
      \addcontentsline{toc}{part}{#1}%
    \fi
    \markboth{}{}%
    {\centering
     \interlinepenalty \@M
     \normalfont
     \ifnum \c@secnumdepth >-2\relax
       \huge\bfseries \partname\nobreakspace\thepart
       \par
       \vskip 20\p@
     \fi
     \Huge \bfseries #2\par}%
    \@endpart}
\renewcommand*\l@part[2]{%
  \ifnum \c@tocdepth >\m@ne
    \addpenalty{-\@highpenalty}%
    \vskip 1.0em \@plus\p@
    \setlength\@tempdima{3.3em}%NEW: indentation for lines 2,3,... change according to your needs
    \begingroup
      \parindent \z@ \rightskip \@pnumwidth
      \parfillskip -\@pnumwidth
      \leavevmode\large\bfseries
      \advance\leftskip\@tempdima% NEW: comment out if no indentation required for lines 2,3,...
      \hskip -\leftskip
      #1\nobreak\hfil \nobreak\hb@xt@\@pnumwidth{\hss #2}\par
      \penalty\@highpenalty
    \endgroup
  \fi}\makeatother

\begin{document}

\tableofcontents

\part{Test part one with a really really long title spanning two lines}
\part{Test part two with a really really long title spanning two lines}
\part{Test part three with a really really long title spanning two lines}
\part{Test part four with a really really long title spanning two lines}

\end{document}