Image on opposite \part page

Question

I'm trying to place a picture on the left side of a \part section, basically what has been done here Memoir: Picture opposite part page, but with a book document class. I'm also using the epigraph package to change my \part command, which works fine.

But there is a BIG problem. When I insert the picture on the left side (even page), the epigraph shows on the picture page and on the part page, it shows twice! I want it to appear only on the part page.

Here is the code I'm using:

  \documentclass{book}

  \usepackage[brazil]{babel}
  \usepackage[utf8]{inputenc}
  \usepackage{amssymb, amsmath, amstext, array}
  \usepackage{gensymb}
  \usepackage{enumitem}
  \usepackage[table]{xcolor}
  \usepackage{graphicx}
  \graphicspath{ {Imagens/} }
  \usepackage[section]{placeins}
  \usepackage{addfont}
  \usepackage[default,scale=0.75]{opensans}
  \usepackage[T1]{fontenc} 
  \usepackage{titlesec}
  \usepackage{anyfontsize}
  \usepackage{lipsum}






  \newcommand*\cleartoleftpage{%
    \clearpage
    \ifodd\value{page}\hbox{}\newpage\fi
  }

  \usepackage{epigraph}


  \titleformat{\part}[display]
    {\filleft\fontsize{40}{40}\selectfont\scshape}
    {\fontsize{90}{90}\selectfont\thepart}
    {20pt}
    {\thispagestyle{epigraph}}

  \setlength\epigraphwidth{.6\textwidth}


  \usepackage{xpatch}
  \makeatletter
  \xpatchcmd\epigraphhead
   {\let\@evenfoot}
   {\let\@oddfoot\@empty\let\@evenfoot}
   {}{}
  \makeatother

  \usepackage{afterpage}

  \newcommand\blankpage{%
      \null
      \thispagestyle{empty}%
      \addtocounter{page}{-1}%
      \newpage}








  \begin{document}

  \chapter{One}
  \lipsum
  \cleardoublepage



  \cleartoleftpage

  \includegraphics[scale=1]{example-image-a}

  \epigraphhead[450]{BlablablaBlabaBlablablaBlablablaBlablablaBlablabla.\par\hfill\textsc{Blabmaister}}
  \part{Part One}


  \chapter{Two}
  \lipsum


  \end{document}

I've already tried afterpage and a lot of other solutions on the web, but none work. Could you please give me a hand?

Thanks!

Answer 1

Reducing this to a more minimal example, I tried following the package epigraph's instructions on page 6. However, exactly the same problem occurs, even without titlesec and the custom definitions of page skipping and the fiddling with the page counter and so on.

\documentclass{book}
\usepackage{lipsum}
\usepackage{nextpage,epigraph,graphicx}
\makeatletter
% manual 6
\let\@epipart\@endpart
\renewcommand{\@endpart}{\thispagestyle{epigraph}\@epipart}
\makeatother

\setlength\epigraphwidth{.6\textwidth}

\begin{document}

\chapter{One}
\lipsum


\epigraphhead[450]{BlablablaBlabaBlablablaBlablablaBlablablaBlablabla.\par\hfill\textsc{Blabmaister}}
\part{Part One}

\chapter{Two}
\lipsum

\end{document}

Clearly, the page style is being applied not once, but twice.

It does work if we precede the \epigraphhead with

\cleartooddpage[\thispagestyle{empty}]

but the manual doesn't mention a need to do this.

Nonetheless, this solution can be adapted to place an image on the preceding even page. That is, the following adaption of the manual's example does work.

\documentclass{book}
\usepackage{lipsum}
\usepackage{nextpage,epigraph,graphicx}
\makeatletter
% manual 6
\let\@epipart\@endpart
\renewcommand{\@endpart}{\thispagestyle{epigraph}\@epipart}
\makeatother

\setlength\epigraphwidth{.6\textwidth}

\begin{document}

\chapter{One}
\lipsum

\cleartoevenpage{\thispagestyle{empty}}
\cleartooddpage[\thispagestyle{empty}\includegraphics{example-image-a}]

\epigraphhead[450]{BlablablaBlabaBlablablaBlablablaBlablablaBlablabla.\par\hfill\textsc{Blabmaister}}
\part{Part One}

\chapter{Two}
\lipsum

\end{document}

[Personal motto: nothing is so difficult as with titlesec.]