dutch.sty

%%Information
% style file for LaTeX notetaking
% original version written by @vEnhance [https://web.evanchen.cc/latex-style-guide.html].
% several modifications made @dutchhansen in Dec. 2023, with an up-to-date distribution of TeXLive.

%%How to use
% use separate macros.tex file for macros
% \documentclass[10pt]{scrartcl}
% \usepackage{dutch}, with options as needed
% proceed as normal

\ProvidesPackage{dutch}
%%fakesection Argument processing
% Default Arguments
% We include "dutch" in all of these to make sure
% that they don't collide with anything in external packages
\newif\ifdutchformal\dutchformaltrue
\newif\ifdutchhdr\dutchhdrtrue
\newif\ifdutchhref\dutchhreftrue
\newif\ifdutchsetup\dutchsetuptrue
\newif\ifdutchthm\dutchthmtrue
\newif\ifdutchsecthm\dutchsecthmfalse
\newif\ifdutchht\dutchhtfalse
\newif\ifdutchpkg\dutchpkgtrue
\newif\ifdutchpdf\dutchpdftrue
\newif\ifdutchauthor\dutchauthortrue
\newif\ifdutchmdthm\dutchmdthmfalse
\newif\ifdutchpatchasy\dutchpatchasyfalse
\newif\ifdutchhints\dutchhintsfalse
\newif\ifdutchcolorsec\dutchcolorsecfalse
\newif\ifdutchtitlemark\dutchtitlemarktrue
\newif\ifdutchvonenabled\dutchvonenabledfalse

%Receive Arguments
\DeclareOption{informal}{\dutchsecthmtrue\dutchmdthmtrue\dutchcolorsectrue} % long docs

\DeclareOption{formal}{\dutchformaltrue}
\DeclareOption{noformal}{\dutchformalfalse}
\DeclareOption{hdr}{\dutchhdrtrue}
\DeclareOption{nohdr}{\dutchhdrfalse}
\DeclareOption{href}{\dutchhreftrue}
\DeclareOption{nohref}{\dutchhreffalse}

\DeclareOption{nosetup}{\dutchsetupfalse}
\DeclareOption{thm}{\dutchthmtrue}
\DeclareOption{nothm}{\dutchthmfalse}
\DeclareOption{secthm}{\dutchsecthmtrue}
\DeclareOption{nosecthm}{\dutchsecthmfalse}

\DeclareOption{ht}{\dutchhttrue}
\DeclareOption{nopdf}{\dutchpdffalse}
\DeclareOption{nopkg}{\dutchpkgfalse}
\DeclareOption{noauthor}{\dutchauthorfalse}
\DeclareOption{titlemark}{\dutchtitlemarktrue} % Sets title in ohead, not \rightmark
\DeclareOption{sectionmark}{\dutchtitlemarkfalse} % Uses \rightmark not title in ohead

\DeclareOption{mdthm}{\dutchmdthmtrue}
\DeclareOption{nomdthm}{\dutchmdthmfalse}
\DeclareOption{colorsec}{\dutchcolorsectrue}
\DeclareOption{nocolorsec}{\dutchcolorsecfalse}

\DeclareOption{patchasy}{\dutchpatchasytrue}
\DeclareOption{hints}{\dutchhintstrue}
\DeclareOption{von}{\dutchvonenabledtrue}

\ProcessOptions\relax

% if packages not loaded, turn off mdthm and asy
\ifdutchpkg\else\dutchmdthmfalse\fi

% If no setup, turn off theorems
\ifdutchsetup\else\dutchthmfalse\fi

%%Small commands
\usepackage{amsmath,amssymb}
\usepackage{xpatch}
\usepackage{iftex}
\ifdutchpkg
  \usepackage[minimal]{yhmath}
  \usepackage{derivative}
\fi

%Convenient Environments
\newenvironment{soln}{\begin{proof}[Solution]}{\end{proof}}
\newenvironment{parlist}{\begin{inparaenum}[(i)]}{\end{inparaenum}}
\newenvironment{gobble}{\setbox\z@\vbox\bgroup}{\egroup}

%%fakesection BEGIN MAIN SETUP
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\ifdutchsetup
  %%fakesection Set up author and date
  \ifdutchauthor
    \title{} % empty title to avoid crashes
    \author{Dutch Hansen}
    \date{\today}
  \fi

  %%fakesection Hyperref
  \ifdutchpkg
    \PassOptionsToPackage{usenames,svgnames,dvipsnames,table}{xcolor}
    \usepackage{xcolor}
    \ifdutchhref
      \usepackage[colorlinks=true,pdfusetitle]{hyperref}
      \hypersetup{pdfkeywords={dutch.sty}}
      \hypersetup{urlcolor=RoyalBlue,linkcolor=RoyalBlue,citecolor=ForestGreen}
    \fi
    \usepackage[nameinlink]{cleveref}
  \fi

  %%fakesection New theorem styles
  \ifdutchthm
    \usepackage{amsthm}
    \usepackage{thmtools}
  \fi
  \ifdutchmdthm
    \ifdutchthm
      %% theorem packages loaded already
    \else
      \usepackage{amsthm}
      \usepackage{thmtools}
    \fi
    \usepackage[framemethod=TikZ]{mdframed}
    \usetikzlibrary{shadows}
    % https://tex.stackexchange.com/a/292090/76888
    % https://github.com/marcodaniel/mdframed/issues/12
    \xpatchcmd{\endmdframed}
      {\aftergroup\endmdf@trivlist\color@endgroup}
      {\endmdf@trivlist\color@endgroup\@doendpe}
      {}{}

    \mdfdefinestyle{mdbluebox}{%
      roundcorner=10pt,
      linewidth=1pt,
      skipabove=12pt,
      innerbottommargin=9pt,
      skipbelow=2pt,
      linecolor=blue,
      nobreak=true,
      backgroundcolor=TealBlue!5,
    }
    \declaretheoremstyle[
      headfont=\sffamily\bfseries\color{MidnightBlue},
      mdframed={style=mdbluebox},
      headpunct={\\[3pt]},
      postheadspace={0pt}
    ]{thmbluebox}

    \mdfdefinestyle{mdgreybox}{%
      roundcorner=10pt,
      linewidth=1pt,
      skipabove=12pt,
      innerbottommargin=9pt,
      skipbelow=2pt,
      linecolor=black,
      nobreak=true,
      backgroundcolor=RedViolet!5!gray!5,
    }
    \declaretheoremstyle[
      headfont=\sffamily\bfseries,
      mdframed={style=mdgreybox},
      headpunct={\\[3pt]},
      postheadspace={0pt}
    ]{thmgreybox}

    \mdfdefinestyle{mdredbox}{%
      linewidth=0.5pt,
      skipabove=12pt,
      frametitleaboveskip=5pt,
      frametitlebelowskip=0pt,
      skipbelow=2pt,
      frametitlefont=\bfseries,
      innertopmargin=4pt,
      innerbottommargin=8pt,
      nobreak=true,
      backgroundcolor=Salmon!5,
      linecolor=RawSienna,
    }
    \declaretheoremstyle[
      headfont=\bfseries\color{RawSienna},
      mdframed={style=mdredbox},
      headpunct={\\[3pt]},
      postheadspace={0pt},
    ]{thmredbox}

    \mdfdefinestyle{mdgreenbox}{%
      skipabove=8pt,
      skipbelow=0pt,
      linewidth=2pt,
      rightline=false,
      leftline=true,
      topline=false,
      bottomline=false,
      linecolor=ForestGreen,
      backgroundcolor=ForestGreen!5,
    }
    \declaretheoremstyle[
      headfont=\bfseries\sffamily\color{ForestGreen!70!black},
      bodyfont=\normalfont,
      spaceabove=2pt,
      spacebelow=1pt,
      mdframed={style=mdgreenbox},
      headpunct={ --- },
    ]{thmgreenbox}

    \mdfdefinestyle{mdblackbox}{%
      skipabove=8pt,
      linewidth=3pt,
      rightline=false,
      leftline=true,
      topline=false,
      bottomline=false,
      linecolor=black,
      backgroundcolor=RedViolet!5!gray!5,
    }
    \declaretheoremstyle[
      headfont=\bfseries,
      bodyfont=\normalfont\small,
      spaceabove=0pt,
      spacebelow=0pt,
      mdframed={style=mdblackbox}
    ]{thmblackbox}

    \mdfdefinestyle{mdpurplebox}{%
      roundcorner=10pt,
      linewidth=1pt,
      skipabove=12pt,
      skipbelow=12pt,
      innertopmargin=9pt,
      innerbottommargin=9pt,
      linecolor=black,
      nobreak=true,
      backgroundcolor=Orchid!10,
      shadow=true,
      shadowsize=6pt,
      shadowcolor=black!30,
      frametitleaboveskip=8pt,
      frametitlebelowskip=8pt,
      frametitlebackgroundcolor=Violet!50!black,
      frametitlefont=\bfseries\sffamily\color{white},
      frametitlerule=true,
    }
    \newcommand{\listhack}{$\empty$\vspace{-2em}}
  \fi

  %%fakesection Theorem setup
  \ifdutchthm
    \theoremstyle{definition}
    %Branching here: the option secthm changes theorems to be labelled by section
    \ifdutchmdthm
      \ifdutchsecthm
        \declaretheorem[style=thmbluebox,name=Theorem,numberwithin=section]{theorem}
      \else
        \declaretheorem[style=thmbluebox,name=Theorem]{theorem}
      \fi
      \declaretheorem[style=thmbluebox,name=Lemma,sibling=theorem]{lemma}
      \declaretheorem[style=thmbluebox,name=Proposition,sibling=theorem]{proposition}
      \declaretheorem[style=thmbluebox,name=Corollary,sibling=theorem]{corollary}
      \declaretheorem[style=thmbluebox,name=Assumption,sibling=theorem]{assume}
      \declaretheorem[style=thmbluebox,name=Theorem,numbered=no]{theorem*}
      \declaretheorem[style=thmbluebox,name=Lemma,numbered=no]{lemma*}
      \declaretheorem[style=thmbluebox,name=Proposition,numbered=no]{proposition*}
      \declaretheorem[style=thmbluebox,name=Corollary,numbered=no]{corollary*}
      \declaretheorem[style=thmbluebox,name=Assumption,numbered=no]{assume*}
    \else
      \ifdutchsecthm
        \declaretheorem[name=Theorem,numberwithin=section]{theorem}
      \else
        \declaretheorem[name=Theorem]{theorem}
      \fi
      \declaretheorem[name=Lemma,sibling=theorem]{lemma}
      \declaretheorem[name=Proposition,sibling=theorem]{proposition}
      \declaretheorem[name=Corollary,sibling=theorem]{corollary}
      \declaretheorem[name=Assumption,sibling=theorem]{assume}
      \declaretheorem[name=Theorem,numbered=no]{theorem*}
      \declaretheorem[name=Lemma,numbered=no]{lemma*}
      \declaretheorem[name=Proposition,numbered=no]{proposition*}
      \declaretheorem[name=Corollary,numbered=no]{corollary*}
      \declaretheorem[name=Assumption,numbered=no]{assume*}
    \fi

    \ifdutchmdthm
      \declaretheorem[style=thmgreenbox,name=Algorithm,sibling=theorem]{algorithm}
      \declaretheorem[style=thmgreenbox,name=Algorithm,numbered=no]{algorithm*}
      \declaretheorem[style=thmgreybox,name=Claim,sibling=theorem]{claim}
      \declaretheorem[style=thmgreybox,name=Claim,numbered=no]{claim*}
    \else
      \declaretheorem[name=Algorithm,sibling=theorem]{algorithm}
      \declaretheorem[name=Algorithm,numbered=no]{algorithm*}
      \declaretheorem[name=Claim,sibling=theorem]{claim}
      \declaretheorem[name=Claim,numbered=no]{claim*}
    \fi

    \ifdutchmdthm
      \declaretheorem[style=thmredbox,name=Example,sibling=theorem]{example}
      \declaretheorem[style=thmredbox,name=Example,numbered=no]{example*}
    \else
      \declaretheorem[name=Example,sibling=theorem]{example}
      \declaretheorem[name=Example,numbered=no]{example*}
    \fi

    % Remark-style theorems
    \ifdutchmdthm
      \declaretheorem[style=thmblackbox,name=Remark,sibling=theorem]{remark}
      \declaretheorem[style=thmblackbox,name=Remark,numbered=no]{remark*}
    \else
      \declaretheorem[name=Remark,sibling=theorem]{remark}
      \declaretheorem[name=Remark,numbered=no]{remark*}
    \fi

    \ifdutchmdthm
      \declaretheoremstyle[
        headfont=\color{blue!40!black}\normalfont\bfseries,
        spaceabove=8pt,
        spacebelow=8pt,
        bodyfont=\normalfont
      ]{basehead}
    \else
      \declaretheoremstyle[spaceabove=6pt,spacebelow=6pt]{basehead}
    \fi

    \declaretheorem[style=basehead,name=Answer,sibling=theorem]{answer}
    \declaretheorem[style=basehead,name=Answer,numbered=no]{answer*}
    \declaretheorem[style=thmgreybox,name=Conjecture,sibling=theorem]{conjecture}
    \declaretheorem[style=thmgreybox,name=Conjecture,numbered=no]{conjecture*}
    \declaretheorem[style=thmgreenbox,name=Definition,sibling=theorem]{definition}
    \declaretheorem[style=thmgreenbox,name=Definition,numbered=no]{definition*}
    \declaretheorem[style=thmblackbox,name=Observation,sibling=theorem]{observation}
    \declaretheorem[style=thmblackbox,name=Observation,numbered=no]{observation*}
    \declaretheorem[style=basehead,name=Exercise,sibling=theorem]{exercise}
    \declaretheorem[style=basehead,name=Exercise,numbered=no]{exercise*}
    \declaretheorem[style=basehead,name=Fact,sibling=theorem]{fact}
    \declaretheorem[style=basehead,name=Fact,numbered=no]{fact*}
    \declaretheorem[style=basehead,name=Problem,sibling=theorem]{problem}
    \declaretheorem[style=basehead,name=Problem,numbered=no]{problem*}
    \declaretheorem[style=basehead,name=Question,sibling=theorem]{ques}
    \declaretheorem[style=basehead,name=Question,numbered=no]{ques*}

    \ifdutchpkg
      \Crefname{answer}{Answer}{Answers}
      \Crefname{assume}{Assumption}{Assumptions}
      \Crefname{claim}{Claim}{Claims}
      \Crefname{conjecture}{Conjecture}{Conjectures}
      \Crefname{exercise}{Exercise}{Exercises}
      \Crefname{fact}{Fact}{Facts}
      \Crefname{problem}{Problem}{Problems}
      \Crefname{ques}{Question}{Questions}
    \fi
  \fi

  %%fakesection formal section and chapter heads
  \ifdutchcolorsec
    \@ifundefined{KOMAClassName}{}{
      \@ifundefined{chapter}{}{
        \addtokomafont{partprefix}{\rmfamily}
        \renewcommand*{\partformat}{\color{purple}
          \scalebox{2.5}{\thepart}\enlargethispage{2em}}
        \addtokomafont{chapterprefix}{\raggedleft}
        \RedeclareSectionCommand[beforeskip=0.5em]{chapter}
        \renewcommand*{\chapterformat}{\mbox{%
          \scalebox{1.5}{\chapappifchapterprefix{\nobreakspace}}%
          \scalebox{2.718}{\color{purple}\thechapter}\enskip}}
      }
      \renewcommand*{\sectionformat}%
        {\color{purple}\S\thesection\enskip}
      \renewcommand*{\subsectionformat}%
        {\color{purple}\S\thesubsection\enskip}
      \renewcommand*{\subsubsectionformat}%
        {\color{purple}\S\thesubsubsection\enskip}
      \addtokomafont{paragraph}{\color{orange!35!black}\P\ }
      \KOMAoptions{numbers=noenddot}
    }
  \fi

  %%fakesection \maketitle configuration
  \@ifundefined{KOMAClassName}%
    {} % do nothing outside KOMA class
    {% If KOMA exists. . .
    \addtokomafont{subtitle}{\Large}
    \setkomafont{author}{\Large\scshape}
    \setkomafont{date}{\Large\normalsize}
    }
  \providecommand{\thetitle}{\@title}
  \providecommand{\theauthor}{\@author}
  \providecommand{\thedate}{\@date}

  %%fakesection Page setup
  \ifdutchformal
    \@ifundefined{KOMAClassName}
    {
      \usepackage{formalhdr}
      \setlength{\headheight}{0.75in}
      \setlength{\oddsidemargin}{0in}
      \setlength{\evensidemargin}{0in}
      \setlength{\voffset}{-1.0in}
      \setlength{\headsep}{10pt}
      \setlength{\textwidth}{6.5in}
      \setlength{\headwidth}{6.5in}
      \setlength{\textheight}{8.75in}
      \setlength{\parskip}{1ex plus 0.5ex minus 0.2ex}
      \setlength{\footskip}{0.3in}
      \ifdutchhdr
        \renewcommand{\headrulewidth}{0.5pt}
        \renewcommand{\footrulewidth}{0.0pt}
        \pagestyle{formal}
        \lhead{Dutch Hansen}
        \chead{}
        \rhead{\nouppercase{\leftmark}}
        \lfoot{}
        \cfoot{\thepage}
        \rfoot{}
      \fi
    }
    {
      \usepackage[headsepline]{scrlayer-scrpage}
      \renewcommand{\headfont}{}
      \addtolength{\textheight}{3.14cm}
      \setlength{\footskip}{0.5in}
      \setlength{\headsep}{10pt}
      \ihead{\footnotesize\textbf{\theauthor} --- \thedate}
      \automark{section}
      \chead{}
      \ohead{\footnotesize\textbf{\thetitle}}
      \cfoot{\pagemark}
    }
  \fi

  %%fakesection Unicode
  \ifdutchpkg
    \ifluatex
      \usepackage{fontspec}
      % https://tex.stackexchange.com/a/572220/76888
      \directlua{luaotfload.add_fallback
        ("dutchs_fallbacks",
          {
            "NotoColorEmoji:mode=harf;",
            "Source Han Sans TW:style=Regular;",
            "Noto Serif CJK SC:style=Regular;",
          }
        )}
      \setmainfont{lmroman10-regular}[
        BoldFont=lmroman10-bold,
        ItalicFont=lmroman10-italic,
        BoldItalicFont=lmroman10-bolditalic,
        SlantedFont=lmromanslant10-regular,
        BoldSlantedFont=lmromanslant10-bold,
        SmallCapsFont=lmromancaps10-regular,
        RawFeature={fallback=dutchs_fallbacks}
      ]
      \setsansfont{lmsans10-regular}[
        BoldFont=lmsans10-bold,
        ItalicFont=lmsans10-oblique,
        BoldItalicFont=lmsans10-boldoblique,
        RawFeature={fallback=dutchs_fallbacks}
      ]
    \fi
  \fi

%%fakesection END MAIN SETUP
\fi