自定义标题格式

Question

我有以下自定义小节标题格式：

    \documentclass{article}

    % Raised Rule Command:
    % - arg 1 (optional) how high to raise the rule
    % - arg 2 thickness of the rule
    \newcommand{\raisedrulefill}[2][0ex]{\leaders\hbox{\rule[#1]{1pt}{#2}}\hfill}

    \usepackage[explicit]{titlesec}

    \titleformat{\subsection}{\large\bfseries}
    {\rule[0.3ex]{5pt}{1.5pt}
    \thesubsection\,\rule[0.3ex]{8pt}{1.5pt}\,}{0em}
    {#1\,\raisedrulefill[0.3ex]{1.5pt}}

    \begin{document}


    \section{Test}

    \subsection{This is a test tile}

    \subsection{This is a long test title that isn't formatted how I'd like it to
    be}

    \end{document}

如下所示。

不过，我想重新格式化长度为两行的字幕，如下所示。

因此，不知何故，这条线必须相对于包含标题的框的中心放置（该框将标题环绕）。

你知道如何实现这个目标吗？

Answer 1

这里有一个选项，您可以保存小节标题，sbox然后控制此框的宽度，如果宽度超过固定长度\maxwidth，则标题文本将插入到 parbox 内。

\documentclass{article}
\usepackage[explicit]{titlesec}

    % Raised Rule Command:
    % - arg 1 (optional) how high to raise the rule
    % - arg 2 thickness of the rule
\newcommand{\raisedrulefill}[2][0ex]{\leaders\hbox{\rule[#1]{1pt}{#2}}\hfill}


\def\maxwidth{.8\textwidth}

\newsavebox\tempbox

\def\testwidth#1{%
\sbox{\tempbox}{#1}%
  \ifdim\wd\tempbox<\maxwidth
    \usebox{\tempbox}%
  \else
    \parbox{\maxwidth}{#1}%
  \fi}


\titleformat{\subsection}{\large\bfseries}
    {\rule[0.3ex]{5pt}{1.5pt}
    \thesubsection\,\rule[0.3ex]{8pt}{1.5pt}\,}{0em}
    {\testwidth{#1}\,\raisedrulefill[0.3ex]{1.5pt}}

\begin{document}


\section{Test}

\subsection{This is a test tile}

\subsection{This is a long test title that isn't formatted how I'd like it to
    be}

\end{document}