%% hgbheadings.sty
%% Headings setup
%% This file is part of the Hagenberg Thesis package for creating bachelors's and masters's theses
%% Author: Wilhelm Burger (wilbur@ieee.org)
%% GitHub: https://github.com/Digital-Media/HagenbergThesis
%% File encoding: ASCII

\ProvidesPackage{hgbheadings}[2025/02/24]%%AUTO

\RequirePackage{fancyhdr}
\RequirePackage{extramarks} % http://mirrors.ctan.org/macros/latex/contrib/fancyhdr/fancyhdr.pdf (p. 20)
\pagestyle{fancy}

\RequirePackage[sf,raggedright]{titlesec}	% use sans serif for chapter/section headings

% Specify the CONTENT to be shown in page headers:
% See also http://mirrors.ctan.org/macros/latex/contrib/fancyhdr/fancyhdr.pdf (p. 18)
\@ifundefined{chapter}%
	{% documents without 'chapter' (article etc.)
		\renewcommand{\sectionmark}[1]{%
			\markboth{\thesection\ #1}{}}%
		\renewcommand{\subsectionmark}[1]{%
			\markright{\thesubsection\ #1}}%
	}%
	{% documents with 'chapter' (book etc.)
		\renewcommand{\chaptermark}[1]{%
			\ifthenelse{\value{chapter} < 1}%
				{\markboth{#1}{}}%
				{\markboth{\thechapter\ #1}{}}}%
		\renewcommand{\sectionmark}[1]{%
			\markright{\thesection\ #1}}%
	}%

% Specify the FORMAT of page headers:
\addtolength{\headheight}{\baselineskip}
\renewcommand{\headrulewidth}{0pt}	% no line under header
\renewcommand{\footrulewidth}{0pt}	% no line above footer

\fancyhf{}% clear all header/footer fields

\ifthenelse{\boolean{@twoside}}% @twoside is defined in LaTeX kernel
	{% twopside:
		\fancyhead[RO,LE]{\sffamily\thepage}%
		\fancyhead[LO]{\sffamily\nouppercase{\rightmark}}%
		\fancyhead[RE]{\sffamily\nouppercase{\firstleftmark}}%
	}%
	{% oneside:
		\fancyhead[R]{\sffamily\thepage}%
		\fancyhead[L]{\sffamily\nouppercase{\firstleftmark}}%
	}%

\fancypagestyle{plain}{%
	\fancyhf{}% clear all header/footer fields except the center
	\fancyfoot[C]{\sffamily\thepage}
	\renewcommand{\headrulewidth}{0pt}
	\renewcommand{\footrulewidth}{0pt}
}