\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{tex/docstyle}[2021/03/12 v0.1 Styling for a Notebook]

%% Margins
\RequirePackage{geometry}
\newgeometry{a4paper, margin=2.2cm, top=3cm, bottom=3cm}

%% Headers and footers
\RequirePackage{fancyhdr}
\fancypagestyle{docstyle}{
  \fancyhf{} % clear currrent values
  \fancyhead[L]{\itshape\leftmark}
  \fancyhead[R]{}
  \fancyfoot[C]{\thepage}
  \renewcommand{\headrulewidth}{0pt}
}
\pagestyle{docstyle} % apply style

%% Main font
% \PassOptionsToPackage{11pt, noamsfont}{amsart}
% \RequirePackage{amsart}

\PassOptionsToPackage{p,osf}{scholax}
\RequirePackage{scholax}

% must be loaded before newtxmath
% amssymb should not be loaded
\RequirePackage{amsmath}
\RequirePackage{amsthm}

\PassOptionsToPackage{scaled=1.075,ncf,vvarbb}{newtxmath}
\RequirePackage{newtxmath}

%% Link colors
\RequirePackage{xcolor}
\PassOptionsToPackage{
  plainpages=false,
  pdfpagelabels,
  pdfusetitle,
  colorlinks = true,
  linkcolor = darkgray!50!black,
  urlcolor = blue!60!black,
  citecolor = black,
  anchorcolor = black
}{hyperref}
\RequirePackage{hyperref}

%% Source code listings
\RequirePackage{listings}
\lstset{
  belowcaptionskip=\baselineskip,
  breaklines=true,
  frame=none,
  inputencoding=utf8,
  % margin
  xleftmargin=\parindent,
  % numbers
  numbers=left,
  numbersep=5pt,
  numberstyle=\ttfamily\footnotesize\color{gray},
  % background
  backgroundcolor=\color{white},
  showstringspaces=false,
  % default language
  language=[LaTeX]TeX,
  % break long lines, and show an arrow where the line was broken
  breaklines=true,
  % postbreak=\mbox{\textcolor{blue!60!black}{$\hookrightarrow$}\space},
  % font
  basicstyle=\ttfamily\small,
  identifierstyle=\color{black},
  keywordstyle=\color{blue!60!black},
  commentstyle=\color{red!60!black},
  stringstyle=\color{orange!60!black},
}

%% Pretty drawings
\RequirePackage{graphicx}
\RequirePackage{tikz}

\colorlet{GridColor}{lightgray}
\newcommand{\makegrid}[1]{
  \begin{center}\begin{tikzpicture}
    \draw[
      dotted, draw=GridColor, fill=white,
      step=4mm,
    ] (0, 0) grid (\linewidth, #1 * 8mm);
  \end{tikzpicture}\end{center}
}

\newcommand{\makefigure}[2][]{
  \begin{center}\begin{tikzpicture}
    \draw[
      draw=GridColor, fill=white
    ] (0, 0) rectangle (\linewidth, #2);
    \node[
      text=GridColor, anchor=north west
    ] at (0, #2) {#1};
  \end{tikzpicture}\end{center}
}