[Tex/LaTex] Index and fancyhydr

Question

I need to have different (imposed) pagestyles and thus am using fancyhydr. But I do not succeed to do the index correctly : it should begin on a certain pagestyle (say indextitle) and then have another style (say indexstyle). I do not know how to settle that : if I put the style before the command \printindex, it affects the last page before the index, which I do not want. I have tried to use the afterpage package which works fine for the inextitle page but does not solve the problem for the following pages. I have not found a way to settle the style in imakeidx directly.

Here is a MWE

 \documentclass[a4paper,11pt,twoside,openright]{book}
 \usepackage[body={110mm, 185mm}, headheight=55pt]{geometry}  
 \usepackage{imakeidx}  
  \usepackage{fancyhdr}
  \usepackage{afterpage}
\indexsetup{level=\chapter} %
\makeindex
 \usepackage[rule=0.6pt, columnsep=20pt, justific=raggedright,     font=small]{idxlayout}

\fancypagestyle{indextitle}{%
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0pt}
\fancyhead{}
\fancyfoot{}
} 
\fancypagestyle{index}{%
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0pt}
\fancyhead{}
\fancyhead[CE]{\textit{Index}}
\fancyhead[CO]{\textit{Index}}
\fancyfoot[C]{\thepage}
} 

\fancypagestyle{paper}{%
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0pt}
\fancyhead{}
\fancyhead[CE]{Name}
\fancyhead[CO]{Title of the paper}
\fancyfoot[C]{\thepage}
} 


\begin{document}
\pagestyle{paper}
A text with no sense\index{sense}

Just to make an index\index{index}

\afterpage{\thispagestyle{indextitle}}
\pagestyle{index}

\printindex

\end{document}

One sees that the main page has the wrong header.

I have tried several other things (clearpage first, but then the index begins two pages later). I would like also to change the way the title is done but it may be a different question. Thanks a lot.

Answer 1

The culprit is idxlayout that does strange things with the page style for the first page in an index.

You can remedy to the problem by issuing \thispagestyle{indextitle} before starting to typeset the index.

\documentclass[a4paper,11pt,twoside,openright]{book}
\usepackage[body={110mm, 185mm}, headheight=55pt]{geometry}  
\usepackage{imakeidx}  
\usepackage{fancyhdr}

\makeindex[columnsep=20pt,columnseprule]

\indexsetup{
  %level=\chapter,% <-- already default
  othercode={%
    \thispagestyle{indextitle}%
    \setlength{\columnseprule}{0.6pt}
    \small\raggedright
  }
}

\fancypagestyle{indextitle}{%
  \renewcommand{\headrulewidth}{0pt}%
  \renewcommand{\footrulewidth}{0pt}%
  \fancyhf{}%
}
\fancypagestyle{index}{%
  \renewcommand{\headrulewidth}{0pt}%
  \renewcommand{\footrulewidth}{0pt}%
  \fancyhf{}%
  \fancyhead[C]{\textit{Index}}%
  \fancyfoot[C]{\thepage}%
} 

\fancypagestyle{paper}{%
  \renewcommand{\headrulewidth}{0pt}%
  \renewcommand{\footrulewidth}{0pt}%
  \fancyhf{}%
  \fancyhead[CE]{Name}%
  \fancyhead[CO]{Title of the paper}%
  \fancyfoot[C]{\thepage}%
} 


\pagestyle{paper}

\begin{document}

A text with no sense\index{sense}

Just to make an index\index{index}

\count255=0
\loop\ifnum\count255<200 \advance\count255 1
\expandafter\index\expandafter{\romannumeral\count255 }
\repeat

\cleardoublepage
\pagestyle{index}
\printindex

\end{document}