bmc-boxes.sty

%══════════════════════════════════════════%
%                                          %
%                  BMC                     %
%     A Bespoke, Multipurpose Class        %
%       -- Boxes of Vaious Kinds --        %
%                 -~=~-                    %
%          Authored by tecosaur            %
%                                          %
%══════════════════════════════════════════%

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

\ifdefined\@bmc\else
    \RequirePackage{bmc-fonts}
    \RequirePackage{bmc-color}
    \RequirePackage{bmc-ref}
\fi

\RequirePackage[many]{tcolorbox}
\RequirePackage{interfaces-base}
\LoadInterface{pgfkeys}
\usetikzlibrary{calc}

\tcbset{
    bmcbox/.style={
        enhanced,
        % text
        fonttitle=\large\fontfamily{\headingsFont}\fontseries{sb}\selectfont,
        coltitle=text,
        colback=infoBulleBackground,
        colbacktitle=infoBulleBackground,
        % frame
        % frame hidden,
        colframe=infoBulleBackground,
        toprule=4pt,titlerule=0pt,bottomrule=0pt,rightrule=0pt,leftrule=0pt,
        segmentation hidden,
        sharpish corners,
        overlay={%
            \draw[line width=2.5pt,#1] (frame.north west)--(frame.south west);
        },
        % margins & padding
        before skip=\baselineskip,
        after skip=\baselineskip,
        boxsep=2pt,
        top=6pt,
        bottom=4pt,
        left=8pt,
        right=6pt,
        breakable,
    },
    bmcboxtitle/.style n args=3{
        extras middle and last={%
            top=20pt,
            overlay={%
                \draw[line width=2.5pt,#1] (frame.north west)--(frame.south west);
                % \draw[line width=0.5pt,dashed,#1] (frame.north west)--(frame.north east);
                \draw[] {([yshift=-12pt,xshift=4.5pt]frame.north west)} node[anchor=west] {#2};
                \draw[] {([yshift=-12pt,xshift=-4.5pt]frame.north east)} node[anchor=east] {#3};
            }
        },
    }
}

% Counter Reset
%-------------------------------------------------------------------------------
\pgfkeys{
	/infoBulle/math/.cd,
	counterReset/.store in=\infoBulle@mathCounterReset,
	counterReset = section,
}
% Icon Radius
%-------------------------------------------------------------------------------
\pgfkeys{
	/infoBulle/icon/.cd,
	radius/.store as dimen
}

% Icon Shape
%-------------------------------------------------------------------------------
\DeclareDocumentCommand{\infoBulle@hexagon}{m m O{}}{
	\fill [#3] ($ (#1) + (0:#2) $) -- ($ (#1) + (60:#2) $) -- ($ (#1) + (120:#2) $) -- ($ (#1) + (180:#2) $) -- ($ (#1) + (240:#2) $) -- ($ (#1) + (300:#2) $) -- cycle;
}
\pgfkeys{
	/infoBulle/icon/.cd,
	shape/.is choice,
	shape/round/.style = {/infoBulle/icon/radius = 3.0mm, /infoBulle/icon/shapeCommand/.code n args = {3}{\fill[##3] (##1) circle (##2);}},
	shape/hexagon/.style = {/infoBulle/icon/radius = 4mm, /infoBulle/icon/shapeCommand/.code n args = {3}{\infoBulle@hexagon{##1}{##2}[##3, rotate=90];}},
	shape/round,
}

\DeclareDocumentCommand{\faAbstractIcon}{m m O{text=infoBulleBackground}}{%
	\begin{tikzpicture}[inner sep=0mm, baseline=(iconText.base)]%
		\coordinate (iconCenter) at (0,0);
		\pgfkeys{/infoBulle/icon/shapeCommand={iconCenter}{\pgfkeysvalueof{/infoBulle/icon/radius}}{#1}}
		\draw (iconCenter) node[text width=.6cm, anchor=center, align=center, font=\fontsize{.35cm}{.42cm}, #3] (iconText) {#2};
	\end{tikzpicture}
}

\DeclareDocumentCommand{\newBmcBox}{m m m O{box} O{\faAngleRight}}{
    \DeclareTColorBox[auto counter]{#1}{O{} O{} O{\thetcbcounter}}{
        bmcbox={#2},bmcboxtitle={#2}{%
            \faAbstractIcon{infoBulleBackground}{#5}[text=#2!70!page]%
            \colorlet{inlinemath}{text!50!page}%
            \color{text!50!page}\small\fontfamily{\headingsFont}\fontseries{mb}\selectfont%
            \ifstrempty{##2}{#3~\thetcbcounter}{##2}%
            \fontseries{tx}\selectfont%
            \ifstrempty{##1}{}{\ifstrempty{##2}{}{: ##1}}%
            \itshape\enspace continued%
        }{\ifstrempty{##2}{}{\small\fontfamily{\headingsFont}\fontseries{tx}\selectfont\itshape%
            \hfill\textcolor{text!50!page}{\thetcbcounter}}},
        title={%
            \faAbstractIcon{#2}{#5}~%
            \colorlet{inlinemath}{text}%
            \ifstrempty{##2}{#3~\thetcbcounter}{##2}%
            \ifstrempty{##1}{}{: \fontseries{tx}\selectfont##1}%
            \ifstrempty{##2}{}{\hfill\textcolor{text!50!page}{\thetcbcounter}}},
        label=#4:##3,
    }
    \expandafter\newcommand\csname tcb@cnt@#1autorefname\endcsname{#3}
}

% \newBmcBox{<env name>}{<colour>}{<title name>}[<ref prefix>][<fa icon name>]
\newBmcBox{example}{exampleColor}{Example}[eg][\faClipboard]
\newBmcBox{critical}{criticalColor}{Critical}[crit][\faTimes]
\newBmcBox{question}{questionColor}{Question}[qu][\faQuestion]
\newBmcBox{info}{informationColor}{Information}[info][\faInfo]
\newBmcBox{check}{checkColor}{Check}[check][\faCheck]
\newBmcBox{warning}{warningColor}{Warning}[warn][\faExclamation]
\newBmcBox{tip}{tipColor}{Tip}[tip][\faLightbulb]

\newcommand{\bmcBoxMathIcon}{\fontsize{.6cm}{.72cm}\selectfont$\pi$}
\newBmcBox{maths}{mathematicalColor}{Maths}[mth][\bmcBoxMathIcon]
\newBmcBox{proof}{mathematicalColor}{Proof}[prf][\bmcBoxMathIcon]
\newBmcBox{theorem}{mathematicalColor}{Theorem}[thr][\bmcBoxMathIcon]
\newBmcBox{lemma}{mathematicalColor}{Lemma}[lem][\bmcBoxMathIcon]
\newBmcBox{corollary}{mathematicalColor}{Corollary}[cor][\bmcBoxMathIcon]
\newBmcBox{definition}{mathematicalColor}{Definition}[def][\bmcBoxMathIcon]
\newBmcBox{axiom}{mathematicalColor}{Axiom}[axi][\bmcBoxMathIcon]
\newBmcBox{proposition}{mathematicalColor}{Proposition}[prop][\bmcBoxMathIcon]