How to set the chapter, section, and default text to specific proportion widths?

Question

I have the following MVP:

\documentclass[a4paper]{book}

\renewcommand{\contentsname}{Contents}

\usepackage{fontspec}
\usepackage{fullpage}
\usepackage{geometry}
\usepackage{sectsty}
\usepackage[hidelinks]{hyperref}
\hypersetup{
  colorlinks,
  citecolor=black,
  filecolor=black,
  linkcolor=black,
  urlcolor=black
}
\setmainfont{MyMonospaceFont}
\newlength{\characterwidth}
\settowidth{\characterwidth}{\normalfont x}
\geometry{margin=0.7in,textwidth=96\characterwidth,lines=48}
\AtBeginDocument{\raggedright\setlength{\parindent}{3\characterwidth}}
\frenchspacing
\begin{document}
\title{xyz}
\maketitle
\tableofcontents

\chapter{Foo}
\section*{A}
hello world
\section*{B}
\section*{C}
\chapter{Bar}
\end{document}

I would like for the default font character width to be let's say 12pt, and then have the section width be 18pt, and the chapter be 24pt. Or perhaps 12pt 24pt 48pt. But in either case, I'm wondering how to do it.

I looked at these places:

But they don't go far enough into answer it and I'm stuck. For example, they explain \chaptertitlefont{\Huge}, but not how to use 48pt there, like \chaptertitlefont{48pt} just shows up as 48ptFoo. I've run into many issues with the answers, so wondering if one could help.

I think this should steer you in the right direction: Specify font point size — malvoisen, Aug 21 '19 at 11:41
\\fontsize{48pt}{60pt}\selectfont in \titleformat (from titlesec) should to the trick. — Bernard, Aug 21 '19 at 13:03
@Bernard \titleformat*{\chapter}{\fontsize{48pt}{60pt}\selectfont} or \titleformat*{\section}{\fontsize{48pt}{60pt}\selectfont} don't have any effect on the corresponding text. — Lance, Aug 21 '19 at 13:44
Try with \titleformat (without *) which requires 5 arguments. — Bernard, Aug 21 '19 at 14:05
I have no idea, not working \titleformat{\section}[display]{\fontsize{6mm}{12mm}\selectfont}{}{}. — Lance, Aug 21 '19 at 14:10

score 1 · Answer 1 · answered Aug 21 '19 at 18:28

As you are loading sectsty you can use its commands:

\documentclass[a4paper,12pt]{book}

\renewcommand{\contentsname}{Contents}

\usepackage{fontspec}
\usepackage{fullpage}
\usepackage{geometry}
\usepackage{sectsty}
\usepackage[hidelinks]{hyperref}
\hypersetup{
  colorlinks,
  citecolor=black,
  filecolor=black,
  linkcolor=black,
  urlcolor=black
}
\setmainfont{TeX Gyre Heros} %adapt
\newlength{\characterwidth}
\settowidth{\characterwidth}{\normalfont x}
\geometry{margin=0.7in,textwidth=96\characterwidth,lines=48}
\AtBeginDocument{\raggedright\setlength{\parindent}{3\characterwidth}}
\frenchspacing

\chapterfont{\fontsize{24pt}{30pt}\selectfont} %<---
\sectionfont{\fontsize{18pt}{24pt}\selectfont} %<---
\begin{document}
\chapter{Foo}
\section*{A}
hello world
\section*{B}
\section*{C}
\end{document}

How to set the chapter, section, and default text to specific proportion widths?

1 Answers1