bmc-sectioning.sty

%══════════════════════════════════════════%
%                                          %
%                  BMC                     %
%     A Bespoke, Multipurpose Class        %
%     -- Sectioning Functionality --       %
%                 -~=~-                    %
%          Authored by tecosaur            %
%                                          %
%══════════════════════════════════════════%

\ProvidesPackage{bmc-sectioning}[2019/06/09 Sectioning functionality used in the BMC class]
\NeedsTeXFormat{LaTeX2e}

\ifdefined\@bmc\else
    \RequirePackage{kvoptions}
    \SetupKeyvalOptions{family=bmc, prefix=bmc@}

    % General
    \DeclareBoolOption{solid}
    \DeclareBoolOption{stripe}

    \DeclareBoolOption{article}

    \DeclareBoolOption{paragraph}

    % color

    \DeclareBoolOption{dark}

    % other stuff

    \DeclareBoolOption{serif}
    \DeclareBoolOption{sans}
    \DeclareBoolOption{mono}
    \DeclareStringOption[serif]{body} % serif, sans, or mono

    \DeclareBoolOption{headingsSerif}
    \DeclareBoolOption{headingsSans}
    \DeclareBoolOption{headingsMono}
    \DeclareStringOption[sans]{headings} % serif, sans, or mono

    % process values

    \ifbool{bmc@serif}{
        \renewcommand{\bmc@body}{serif}
    }{}
    \ifbool{bmc@sans}{
        \renewcommand{\bmc@body}{sans}
    }{}
    \ifbool{bmc@mono}{
        \renewcommand{\bmc@body}{mono}
    }{}

    \ifbool{bmc@headingsSerif}{
        \renewcommand{\bmc@headings}{serif}
    }{}
    \ifbool{bmc@headingsSans}{
        \renewcommand{\bmc@headings}{sans}
    }{}
    \ifbool{bmc@headingsMono}{
        \renewcommand{\bmc@headings}{mono}
    }{}

    \newcommand{\ifdefstringx}[2]{%
        \begingroup
        \edef\x{#1}%
        \ifdefstring{\x}{#2}{\endgroup\@firstoftwo}{\endgroup\@secondoftwo}%
    }
\fi

% Titling
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\ifbool{bmc@article}{
}{
  \addtokomafont{chapter}{%
    \fontfamily{\headingsFont}\fontsize{1.7cm}{1.4cm}\fontseries{tx}\selectfont%
    \ifbool{bmc@dark}{\color{primaryVariant}\colorlet{inlinemath}{primaryVariant}}
    {\color{alternativePrimary}\colorlet{inlinemath}{alternativePrimary}}%
  }

  \renewcommand\chapterformat{%
    \fontseries{m}\fontsize{6.5cm}{1ex}\selectfont%
    \ifbool{bmc@solid}{\color{page}}{\color{primary}}%
    \thechapter
  }


  \renewcommand{\chapterlinesformat}[3]{%
    % TODO: find way to combine \newgeometry and \thispagestyle
    % \newgeometry{right=2.7cm, marginparwidth=0cm, marginparsep=0mm}
    \thispagestyle{empty}
    \begin{tikzpicture}[remember picture, overlay]
      \titleBackground
      \node[anchor=east] at ([yshift=-7.5cm, xshift=8.7cm] current page.north west) {#2};
      \node[anchor=north west,text width=\paperwidth-7cm-\leftmargin] at ([yshift=-4.8cm, xshift=7.7cm] current page.north west) {\raggedright #3};
	\end{tikzpicture}
  }
}


\addtokomafont{section}{\color{primary}\colorlet{inlinemath}{primary}%
	\Huge\bfseries\fontfamily{\headingsFont}\selectfont}
\addtokomafont{subsection}{\color{primary}\colorlet{inlinemath}{primary}%
	\huge\fontseries{sb}\fontfamily{\headingsFont}\selectfont}
\addtokomafont{subsubsection}{\color{primary}\colorlet{inlinemath}{primary}%
	\LARGE\fontseries{sb}\fontfamily{\headingsFont}\selectfont}
\addtokomafont{paragraph}{\color{primary!70!text}\colorlet{inlinemath}{primary!70!text}%
	\fontseries{mb}\fontfamily{\headingsFont}\selectfont}
\addtokomafont{subparagraph}{\color{primary!70!text}\colorlet{inlinemath}{primary!70!text}%
	\fontseries{mb}\fontfamily{\headingsFont}\selectfont}

\renewcommand{\sectionformat}{%
	\fontseries{sb}\selectfont\itshape\thesection\autodot\enskip
}

\renewcommand{\subsectionformat}{%
    \fontseries{sb}\selectfont\itshape\thesubsection\autodot\enskip
}

\renewcommand{\subsubsectionformat}{%
    \fontseries{sb}\selectfont\itshape\thesubsubsection\autodot\enskip
}

\ifbool{bmc@article}{
	\renewcommand{\sectionlinesformat}[4]{
		#4 \hfill #3
		\vspace*{-.5\baselineskip}
		\mbox{}
		\textcolor{primary}{\rule{\textwidth}{.4pt}}\par\nobreak
	}
}{}

\RedeclareSectionCommands[indent=0em]{section,subsection,subsubsection}

% Make parahraphs and subparagraphs more like sections (unless disabled)
\ifbool{bmc@paragraph}{}{
	\ifx\paragraph\undefined\else
	\let\oldparagraph\paragraph
	\renewcommand{\paragraph}[1]{\oldparagraph{#1}\mbox{}}
	\fi
	\ifx\subparagraph\undefined\else
	\let\oldsubparagraph\subparagraph
	\renewcommand{\subparagraph}[1]{\oldsubparagraph{#1}\mbox{}}
	\fi
}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%		ToC and Mini-ToC
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\RequirePackage{titletoc}
\RequirePackage{framed}
\RequirePackage[absolute,overlay]{textpos}

\newcommand{\fancytoc}{
	\thispdfpagelabel{Contents}
	% \titleBackground
	{\hypersetup{linkcolor=text}
		\setcounter{tocdepth}{0}
		\begingroup
			\let\clearpage\relax
			\tableofcontents
		\endgroup
	}
	\begin{textblock*}{5cm}(1.6cm,6cm) % {block width} (coords)
		\fontsize{4cm}{2em}\selectfont
		\rotatebox[origin=c]{90}{\color{primaryVariant}Contents}
	\end{textblock*}
	\newpage
}

%		ToC
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\ifbool{bmc@article}{
	\renewcommand{\contentsname}{Contents}
}{
	\renewcommand{\contentsname}{}
}
% \pretocmd{\tableofcontents}{\hypertarget{contents}{}}{}{}

\newenvironment{tocChapterText}{
	\def\FrameCommand{
		\ifbool{bmc@notes}{
			\hspace*{\dimexpr13.3cm-1\leftmargin\relax}
		}{
			\hspace*{\dimexpr9.7cm-1\leftmargin\relax}
		}
	}
	\MakeFramed{
		% \parshape 1 0cm .75\textwidth \relax\FrameRestore
		\parshape 1 0cm 12.5cm \relax
	}
}{\endMakeFramed}
\titlecontents{chapter}[0em]{\vspace*{1\baselineskip}}{
	\parbox{7.5cm-\leftmargin}{\hfill{\ifbool{bmc@solid}{\hypersetup{linkcolor=contrastColour}}{\hypersetup{linkcolor=primary}}\fontsize{1.5cm}{1ex}\selectfont\color{page}\thecontentspage}\hspace*{3mm}}
	\vspace*{-1.48cm}\fontfamily{\headingsFont}\selectfont\tocChapterText{\large Chapter~\thecontentslabel}
	\\[-3mm]
	\huge\fontfamily{\familydefault}\selectfont
}{}{\endtocChapterText\vskip-5mm}

%		Mini-ToC
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\newcommand{\printMiniToc}{
	\vspace*{12cm}
	\hspace*{\dimexpr-1\leftmargin+6.7cm\relax}
	\parbox[t]{\paperwidth-7cm-\leftmargin}{
		\hspace*{-3mm}\raisebox{0.25mm}{\fontsize{0.6cm}{1ex}\selectfont\ifbool{bmc@solid}{\color{contrastColour}}{\color{primary}}\faList}
		\ifstrequal{\bmc@body}{serif}{\hspace*{5.5mm}}{\hspace*{6.5mm}} {\fontfamily{\headingsFont}\fontseries{tx}\selectfont\huge{Summary}}
		\vspace*{3mm}
		\startcontents[chapters]
		\hypersetup{linkcolor=text}
		\begin{spacing}{1.1}
			\printcontents[chapters]{p}{1}{\setcounter{tocdepth}{1}}
		\end{spacing}
	}
}


% Redefining toc style so that it dont get indented in partialTocs
\titlecontents{psection}[3em]
{} {\large{\ifbool{bmc@solid}{\color{contrastColour}}{\color{primary}}\bfseries\contentslabel{3.5em}}} {} {, \thecontentspage}

\titlecontents{psubsection}[3em]
{} {\large{\ifbool{bmc@solid}{\color{contrastColour}}{\color{primary}}\bfseries\contentslabel{3.5em}}} {} {, \thecontentspage} %\contentslabel{4.2em} to right-align

\ifbool{bmc@solid}{
	\newcommand{\titleBackground}{
		\fill[fill=primary] (current page.south west) rectangle ++(7.5cm, \paperheight);
	}
}{}

\ifbool{bmc@stripe}{
	\newcommand{\titleBackground}{
		\fill[fill=primary] ([xshift=7.42cm]current page.south west) rectangle ++(1mm, \paperheight);
	}
}{}

\ifboolexpr{not bool {bmc@solid} and not bool {bmc@stripe}}{
	\newcommand{\titleBackground}{}
}{}

%%%%%%%%%%%%%%%%%%

% Automatically add to \chapter
\xapptocmd{\scr@@startchapter}{\printMiniToc\vfill\newpage}{}{}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%      Header and Footer
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\ifdraft{
	\AfterPackage*{scrlayer-scrpage}{%
    \DeclareNewLayer[
      head,
      height=0pt,
      foreground,
      contents=\textcolor{text!60!page}{\layercontentsmeasure}
    ]{head.ruler}
    \DeclareNewLayer[
      foot,
      height=0pt,
      addvoffset=\footheight-\dp\strutbox,
      background,
      contents=\textcolor{text!60!page}{\layercontentsmeasure}
    ]{foot.ruler}
    \AddLayersAtBeginOfPageStyle{scrheadings}{head.ruler,foot.ruler}
    \AddLayersAtBeginOfPageStyle{plain.scrheadings}{head.ruler,foot.ruler}
  }
}{

	\clearpairofpagestyles
	\cfoot*{\hyperlink{contents}{\pagemark}}

	\ifbool{bmc@article}{
		\chead{\hypersetup{allcolors=.}\hyperlink{section.\arabic{section}}{\headmark}}
	}{
		\chead{\hypersetup{allcolors=.}\hyperlink{chapter.\arabic{chapter}}{\headmark}}
	}

	\addtokomafont{pagehead}{\fontfamily{\headingsFont}\selectfont\bfseries\upshape%
		\ifbool{bmc@solid}{\color{contrastColour}\colorlet{inlinemath}{contrastColour}}{\color{primary}\colorlet{inlinemath}{primary}}}
	\addtokomafont{pagenumber}{\fontfamily{\headingsFont}\fontseries{sb}\selectfont\color{primary}}

	% shift the predefined head layers
	\ifbool{bmc@print}{
		\ForEachLayerOfPageStyle*{scrheadings}{%
		\Ifstrstart{#1}{scrheadings.head.}
			{\ModifyLayer[addvoffset=-.45in-.5\voffset-.5\topmargin]{#1}}
			{}%
		}
		\ForEachLayerOfPageStyle*{plain.scrheadings}{%
		\Ifstrstart{#1}{plain.scrheadings.head.}
			{\ModifyLayer[addvoffset=-.45in-.5\voffset-.5\topmargin]{#1}}
			{}%
		}
	}{
		\ForEachLayerOfPageStyle*{scrheadings}{%
		\Ifstrstart{#1}{scrheadings.head.}
			{\ModifyLayer[addvoffset=-.5in-.5\voffset-.5\topmargin]{#1}}
			{}%
		}
		\ForEachLayerOfPageStyle*{plain.scrheadings}{%
		\Ifstrstart{#1}{plain.scrheadings.head.}
			{\ModifyLayer[addvoffset=-.5in-.5\voffset-.5\topmargin]{#1}}
			{}%
		}
	}

	% Defining the Layer
	\DeclareLayer[
		background,
		topmargin,
		addheight=\headheight,
		contents={%
			\ifbool{bmc@solid}{\color{primary}}{\color{page}}
			\rule{\layerwidth}{\layerheight}%
		}%
	]{my.head.background}

	%Adding the Layer to the pagestyles
	\AddLayersAtBeginOfPageStyle{scrheadings}{my.head.background}
	\AddLayersAtBeginOfPageStyle{plain.scrheadings}{my.head.background}

}