Titlesec 與 tikz

Question

我仍然對titlesec和感到困惑tikz。例如，在下面的程式碼中，如何將章節號和標題放置在具有自訂內邊距的圓角矩形內？

\documentclass[12pt, oneside]{book}
\usepackage[paperwidth=30pc, paperheight=36pc, margin=5pc]{geometry}

\usepackage{titlesec}
\titleformat{\chapter}%
  [hang]% shape
  {\centering\bfseries\large}% format applied to label+text
  {\thechapter}% label
  {10pt}% horizontal separation between label and title body
  {}% before the title body
  []% after the title body

\usepackage{tikz}

\begin{document}
\chapter{Test Chapter Title}
\end{document}

Answer 1

訣竅在於最後一個強制參數的最後部分將\titleformat標題傳遞為參數。

借用matexmatics的程式碼

\documentclass[12pt, oneside]{book}
\usepackage[paperwidth=30pc, paperheight=36pc, margin=5pc]{geometry}
\usepackage{tikz}
\usepackage{titlesec}

\titleformat{\chapter}
  [block]% shape
  {\filcenter\bfseries\large}% format applied to label+text
  {}% label
  {0pt}% horizontal separation between label and title body
  {\maketitleframe{\thechapter}}% before the title body
\titleformat{name=\chapter,numberless}
  [block]% shape
  {\filcenter\bfseries\large}% format applied to label+text
  {}% label
  {0pt}% horizontal separation between label and title body
  {\maketitleframe{\ignorespaces}}% before the title body

\newcommand{\maketitleframe}[2]{%
  \begin{tikzpicture}
    \node[draw,rounded corners] {#1 #2};
  \end{tikzpicture}% before the title body
}

\begin{document}

\tableofcontents

\chapter{Test Chapter Title}

\end{document}

為無數章節定義格式也很重要。作為第一個參數，和\ignorespaces之間的空格被吞掉了。筆記#1#2

1. \filcenter並不是\centering
2. 0pt 而不是 10pt

如果您希望編號和標題之間有更多空間

\documentclass[12pt, oneside]{book}
\usepackage[paperwidth=30pc, paperheight=36pc, margin=5pc,showframe]{geometry}
\usepackage{tikz}
\usepackage{titlesec}

\titleformat{\chapter}
  [block]% shape
  {\filcenter\bfseries\large}% format applied to label+text
  {}% label
  {0pt}% horizontal separation between label and title body
  {\maketitleframe{\thechapter\hspace{10pt}}}% before the title body
\titleformat{name=\chapter,numberless}
  [block]% shape
  {\filcenter\bfseries\large}% format applied to label+text
  {}% label
  {0pt}% horizontal separation between label and title body
  {\maketitleframe{}}% before the title body

\newcommand{\maketitleframe}[2]{%
  \begin{tikzpicture}
    \node[draw,rounded corners] {#1#2};
  \end{tikzpicture}% before the title body
}

\begin{document}

\tableofcontents

\chapter{Test Chapter Title}

\end{document}

Answer 2

一個解決方案是使用explicit套件選項titlesec。然後可以透過 獲得標題#1。命令\thechapter被移動到放置的\node位置#1。

\documentclass[12pt, oneside]{book}
\usepackage[paperwidth=30pc, paperheight=36pc, margin=5pc]{geometry}

\usepackage[explicit]{titlesec}
\titleformat{\chapter}%
  [hang]% shape
  {\centering\bfseries\large}% format applied to label+text
  {}% label
  {10pt}% horizontal separation between label and title body
  {\begin{tikzpicture}\node[draw,rounded corners] {\thechapter{} #1};\end{tikzpicture}}% before the title body
  []% after the title body

\usepackage{tikz}

\begin{document}
\chapter{Test Chapter Title}
\end{document}