Centralizando seções

Question

Eu gostaria de titlesec centralizar minhas seções da seguinte maneira (MWE):

\documentclass[10pt,a4paper,twoside]{book}
\usepackage[latin1]{inputenc}
\usepackage{lipsum}
\usepackage{titlesec}
\titleformat{\section}% command to format the section titles
        [block]% shape/type of title
        {\LARGE\bfseries}% formatting commands applied to both label and title
        {\begin{center} \thesection \end{center}}% section number; here set inside an invisible box with a constant width
        {0em}% separation between number and chapter title; we've already covered this with the box
        {}% additional formatting command for title itself not applied to number
        [
        ]%
\begin{document}
\chapter{The first chapter}
\lipsum[1-5]
\section{First section}
\lipsum[3]
\section*{Section}
\lipsum[4]

\end{document}

Mas isso não centraliza o título da seção e também não é muito bonito. Como posso centralizar seções lindamente usando titlesec?

Answer 1

Funcionará se você seguir \centeringconforme \LARGE\bfseriessugerido pelo cfr.

\titleformat{\section}% command to format the section titles
        [block]% shape/type of title
        {\LARGE\bfseries\centering}% formatting commands applied to both label and title
        {\thesection}% section number; here set inside an invisible box with a constant width
        {1ex}% separation between number and chapter title; we've already covered this with the box
        {}% additional formatting command for title itself not applied to number
        [
        ]%

dá

Você também pode usar o formato simplificado

\titleformat*{\section}{\LARGE\bfseries\centering}

em vez de \titleformat.

\documentclass[10pt,a4paper,twoside]{book}
\usepackage[latin1]{inputenc}
\usepackage{lipsum}
\usepackage{titlesec}
%\titleformat{\section}% command to format the section titles
%        [block]% shape/type of title
%        {\LARGE\bfseries\centering}% formatting commands applied to both label and title
%        {\thesection}% section number; here set inside an invisible box with a constant width
%        {1ex}% separation between number and chapter title; we've already covered this with the box
%        {}% additional formatting command for title itself not applied to number
%        [
%        ]%

\titleformat*{\section}{\LARGE\bfseries\centering}
\begin{document}
\chapter{The first chapter}
\lipsum[1-5]
\section{First section}
\lipsum[3]
\section*{Section}
\lipsum[4]

\end{document}

Conforme lembrado por Bernard, você também pode usar \filcentero fornecido por titlesecem vez de \centering.

Mas seria fácil de usar sectstycomo na resposta de AboAmmar, se possível.

Answer 2

Uma solução rápida usando o sectstypacote

\documentclass[10pt,a4paper,twoside]{book}
\usepackage[latin1]{inputenc}
\usepackage{lipsum}
%\usepackage{titlesec}
\usepackage{sectsty}

\allsectionsfont{\centering}

\begin{document}
\chapter{The first chapter}
\lipsum[1-5]
\section{First section}
\lipsum[3]
\section*{Section}
\lipsum[4]

\end{document}

Ou simplesmente usando titlesecadicionando a [center]opção como esta:

\documentclass[10pt,a4paper,twoside]{book}
\usepackage[latin1]{inputenc}
\usepackage{lipsum}
\usepackage[center]{titlesec}

\begin{document}
\chapter{The first chapter}
\lipsum[1-5]
\section{First section}
\lipsum[3]
\section*{Section}
\lipsum[4]

\end{document}