# titleformat not being applied to bibliography

Here is a MWE of the code I am using for applying a titleformat to my chapters. But it does not get applied to my bibliography chapter. Any ideas why?

\documentclass[a4paper,11pt]{report}

\usepackage{times}
\usepackage{makeidx}

\usepackage{tikz}
\usetikzlibrary{calc}
\pgfdeclarelayer{background}
\pgfdeclarelayer{foreground}
\pgfsetlayers{background,main,foreground}

\usepackage{titlesec}

\titleformat{\chapter}[display]
{\bfseries\Large}
{\hfill \tikz[remember picture] \node[] (nr) {\huge\color{blue!50!black}\textbf{\thechapter}~~};
\begin{tikzpicture}[remember picture,overlay]
\coordinate (leftborder) at ($(nr)-(100,0)$);
\coordinate (leftborderhigh) at ($(nr.north west)-(100,0)$);
\coordinate (leftborderlow) at ($(nr.south west)-(100,0)$);
\coordinate (left) at ($(nr.west)-(1.5,0)$);
\path[shade, top color=blue!1,bottom color=blue!20] (leftborderhigh) -- ($(nr.north west)+(0,0.5)$) -- (left) -- (leftborder) -- cycle;
\path[shade, top color=blue!20,bottom color=blue!1] (leftborderlow) -- ($(nr.south west)-(0,0.5)$) -- (left) -- (leftborder) -- cycle;
\draw[blue!50!black,line width=0.1em,line join=round] (left) -- ($(nr.south west)-(0,0.5)$) -- ($(nr.south east)-(0,0.5)$) -- ($(nr.north east)+(0,0.5)$) -- ($(nr.north west)+(0,0.5)$) -- (left) -- (leftborder);
\end{tikzpicture}}
{5ex}
{\filleft\LARGE\bf}
[\vspace{0ex}]

\makeindex

\begin{document}
\chapter{Introduction}
\chapter{Conclusion}
\bibliography{../references}
\end{document}

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The bibliography is set as \chapter*, not \chapter. –  Werner May 25 '12 at 16:17
Do you want that the bibliography is numbered? –  egreg May 25 '12 at 16:18

In case you don't want a numbered bibliography, you need to add separate customization code using \titleformat{name=\chapter,numberless}. Add the following to your preamble (I used \phantom to preserve the size of your TikZ decoration):

\titleformat{name=\chapter,numberless}[display]
{\bfseries\Large}
{\hfill \tikz[remember picture] \node[] (nr) {\huge\color{blue!50!black}\phantom{\textbf{\thechapter}}~~};
\begin{tikzpicture}[remember picture,overlay]
\coordinate (leftborder) at ($(nr)-(100,0)$);
\coordinate (leftborderhigh) at ($(nr.north west)-(100,0)$);
\coordinate (leftborderlow) at ($(nr.south west)-(100,0)$);
\coordinate (left) at ($(nr.west)-(1.5,0)$);
\path[shade, top color=blue!1,bottom color=blue!20] (leftborderhigh) -- ($(nr.north west)+(0,0.5)$) -- (left) -- (leftborder) -- cycle;
\path[shade, top color=blue!20,bottom color=blue!1] (leftborderlow) -- ($(nr.south west)-(0,0.5)$) -- (left) -- (leftborder) -- cycle;
\draw[blue!50!black,line width=0.1em,line join=round] (left) -- ($(nr.south west)-(0,0.5)$) -- ($(nr.south east)-(0,0.5)$) -- ($(nr.north east)+(0,0.5)$) -- ($(nr.north west)+(0,0.5)$) -- (left) -- (leftborder);
\end{tikzpicture}}
{5ex}
{\filleft\LARGE\bf}
[\vspace{0ex}]

-
Thank you very much, perfect. Now my tikz decoration looks empty but that has nothing to do with the problem. –  Saki May 26 '12 at 7:09
@Saki You may also thank me by upvoting and accepting my answer. :-) –  lockstep May 26 '12 at 7:10