Change font in section headings only

fontssectioning

I'm writing a handbook for an organisation who has specific fonts (Montserrat for Titles and headings; Source Sans Pro for the text).
I can change the font to either of them using
https://tug.org/FontCatalogue/montserratregular/ and
https://tug.org/FontCatalogue/sourcesanspro/, respectively.

But I don't know how to get it into \allsectionsfont
Or into \fontfamily because the examples I found are for the "standard" fonts.

\documentclass[a4paper,12p]{book}

\usepackage[T1]{fontenc}
\usepackage[default]{sourcesanspro}
%\usepackage[defaultfam,tabular,lining]{montserrat} %% Option 'defaultfam'
%%% only if the base font of the document is to be sans serif
%\usepackage[T1]{fontenc}
\renewcommand*\oldstylenums[1]{{\fontfamily{Montserrat-TOsF}\selectfont #1}}

\usepackage{sectsty}
    \allsectionsfont{\sffamily}

\begin{document}
\setlength{\parindent}{0pt} % never indent first line

\chapter{Introduction}

\section{Why join?}

This document is a sample document to 
test font families and font typefaces.\\
{\fontfamily{cmss}\selectfont
This text uses a different font typeface
}

\end{document}

How do I need to change my code?

Best Answer

The two packages fight each other in how to define \sfdefault.

I suggest to first load sourcesanspro and make it \rmdefault. Then you can load montserrat.

\documentclass[a4paper,12pt]{book}

\usepackage[T1]{fontenc}
\usepackage{sectsty}

\usepackage{sourcesanspro}

% set the default font to SourceSansPro
\RenewCommandCopy{\rmdefault}{\sfdefault}

\usepackage[tabular,lining]{montserrat}

\allsectionsfont{\sffamily}

\setlength{\parindent}{0pt} % never indent first line

\begin{document}

\chapter{Introduction}

\section{Why join? \fontname\font}

This document is a sample document to 
test font families and font typefaces.
\fontname\font

\end{document}

The \fontname\font instructions show what font is being used.

Without the default or defaultfam options, the two packages just set \sfdefault. After loading sourcesanspro, we change \rmdefault to what sourcesanspro thinks is \sfdefault. After that we can load montserrat that sets \sfdefault.

With `titlesec`

\documentclass{book}
%\usepackage{avant}
%\renewcommand*\familydefault{\sfdefault} %% Only if the base font of the document is to be sans serif
\usepackage[T1]{fontenc}
%\renewcommand{\sfdefault}{pag} %% To make only sf fonts to be avant garde.
\usepackage{titlesec}
\titleformat{\chapter}[display]
  {\fontfamily{pag}\selectfont\huge\bfseries}
  {\chaptertitlename\ \thechapter}
  {20pt}
  {\Huge}
\titleformat{\section}
  {\fontfamily{pag}\selectfont\bfseries\Large}
  {\thesection}
  {1em}
  {}
\titleformat{\subsection}
  {\fontfamily{pag}\selectfont\bfseries\Large}
  {\thesection}
  {1em}
  {}
\begin{document}
\setcounter{secnumdepth}{3}
\chapter{Some chapter}
\section{Event Monitor Pattern}
\subsection{Some sub-section}
\subsubsection{Some sub sub section}

\end{document}

[Tex/LaTex] Change chapter number font only

You can use something like this to call the font in a scalable way:

\documentclass{article}

\begin{document}
{\fontencoding{U}\fontfamily{eur}\fontseries{b}\selectfont abc 123
 \large abc 123}
\end{document}

Be aware that the "U" in \fontencoding means "unknown". So you can't rely on chars to be on standard positions. (But the numbers should be ok.)

You shouldn't put the font switching command in \thechapter: \thechapter is used in a lot of places. The font switch will e.g. end also in the headers, the toc and will be used when you reference a chapter as it will be stored with the label:

\newlabel{abc}{{\fontencoding  {U}\fontfamily  {eur}\fontseries  {b}\selectfont  1}{1}}

Best Answer

Related Solutions

[Tex/LaTex] Change font to only section and subsection of the document

With titlesec

[Tex/LaTex] Change chapter number font only

Related Question

With `titlesec`