\ProvidesClass{packages/slides}[2025/01/27 v1]

\PassOptionsToPackage{dvipsnames, table}{xcolor}
\PassOptionsToPackage{unicode}{hyperref}
\PassOptionsToPackage{naturalnames}{hyperref}
\LoadClass[aspectratio=169,10pt]{beamer}

% speaker notes
% open pdf in dual screen using pympress (https://github.com/Cimbali/pympress)
% \setbeameroption{show notes on second screen=right}

% listings (should be loaded before csquotes)
\RequirePackage{minted}
\setmintedinline{breaklines, breakanywhere, breakanywheresymbolpre={}}

% language and encoding
\RequirePackage[french]{babel}
\RequirePackage{packages/lab-common}

% biblatex for references on slides
\RequirePackage[backend=biber]{biblatex}
% clean, short citations in footnotes (cf. https://tex.stackexchange.com/a/587604)
\renewbibmacro{in:}{}
% \AtEveryCitekey{\clearfield{journaltitle}}
\AtEveryCitekey{\clearfield{volume}}
\AtEveryCitekey{\clearfield{number}}
% \AtEveryCitekey{\clearfield{booktitle}}
% \AtEveryCitekey{\clearfield{series}}
\AtEveryCitekey{\clearfield{pages}}
\AtEveryCitekey{\clearfield{month}}
\AtEveryCitekey{\clearlist{publisher}}
\AtEveryCitekey{\clearname{editor}}
\AtEveryCitekey{\clearlist{location}}
\AtEveryCitekey{\clearfield{doi}}
\AtEveryCitekey{\clearfield{isbn}}
\AtEveryCitekey{\clearfield{issn}}
\AtEveryCitekey{\clearfield{eprint}}
\AtEveryCitekey{\clearfield{url}}
\AtEveryCitekey{\clearfield{urlyear}}
\AtEveryCitekey{\clearfield{urlmonth}}
\AtEveryCitekey{\clearfield{urlday}}
% include reference number in citations (cf. https://tex.stackexchange.com/a/176295)
\DeclareCiteCommand{\fullcite}
  {\usebibmacro{prenote}}
   {{\printtext[labelnumberwidth]{%
        \printfield{prefixnumber}%
        \printfield{labelnumber}}} %
  \usedriver
     {\DeclareNameAlias{sortname}{default}}
     {\thefield{entrytype}}}
  {\multicitedelim}
  {\usebibmacro{postnote}}

% captions
\RequirePackage{caption}
\captionsetup{font=scriptsize,labelfont=scriptsize}
% do not prepend "Figure X:" in captions
\captionsetup[figure]{labelformat=empty}

% beamer theme
\usetheme{moloch}
\RequirePackage{appendixnumberbeamer}
\RequirePackage{fontspec}
\setsansfont[
  Extension=.otf,
  UprightFont=*-Regular,
  ItalicFont=*-Italic,
  BoldFont=*-SemiBold,
  BoldItalicFont=*-SemiBoldItalic
]{IBMPlexSans}
\setmonofont[
  Extension=.otf,
  UprightFont=*-Regular,
  ItalicFont=*-Italic,
  BoldFont=*-SemiBold,
  BoldItalicFont=*-SemiBoldItalic
]{IBMPlexMono}
% \setmonofont{Fantasque Sans Mono}
\AtBeginEnvironment{tabular}{%
  \addfontfeature{Numbers={Monospaced}}
}
% https://steeven9.github.io/USI-LaTeX/html/packages_hyperref_babel_xcolor3.html
% Section 3.2 of:
% https://mirror.ibcp.fr/pub/CTAN/macros/latex/contrib/beamer-contrib/themes/moloch/moloch.pdf
\definecolor{ubo}{HTML}{5e548e}
\setbeamercolor{progress bar}{fg=ubo}
\setbeamercolor{title separator}{fg=ubo}
\setbeamercolor{frametitle}{bg=ubo}
% \setbeamercolor{progress bar}{fg=BrickRed}
% \setbeamercolor{title separator}{fg=BrickRed}
% footnote font size
\setbeamerfont{footnote}{size=\tiny}
% footer bar: author | short title, section and dots | frame count
% Set the short names with \author[short]{...} and \title[short]{...}.
\setbeamerfont{footline}{size=\fontsize{6}{7.5}\selectfont}
\setbeamercolor{footline}{
  use=normal text,
  fg=normal text.fg!80!normal text.bg,
  bg=ubo!10!normal text.bg
}
\setbeamercolor{footline frame count}{fg=white, bg=ubo}
% The left inset matches the frame title. The depth centres the capitals.
\newcommand*{\slides@footinset}{7.7pt}
\newcommand*{\slides@footheight}{7.6pt}
\newcommand*{\slides@footdepth}{3.4pt}
\newcommand*{\slides@footmaxdots}{20}
% Count the frames of each section as they are typeset. The totals come from
% the aux file, so the dots are complete from the second compilation onwards.
% The template runs several times per frame, hence the comparison with the
% previous frame. It also runs for plain frames, such as section pages, which
% have no footer and do not count. \part and \appendix restart the section numbers.
\newcount\slides@footframe
\gdef\slides@footlastsection{}
\gdef\slides@footlastframe{}
\newcommand*{\slides@sectionframes}[2]{\global\@namedef{slides@frames@#1}{#2}}
\newcommand*{\slides@footcount}{%
  \ifbeamer@plainframe\else\slides@footcountframe\fi
}
\newcommand*{\slides@footcountframe}{%
  \edef\slides@footcurrent{\the\c@part-\the\c@section}%
  \ifx\slides@footcurrent\slides@footlastsection\else
    \global\let\slides@footlastsection\slides@footcurrent
    \global\slides@footframe=0\relax
    \gdef\slides@footlastframe{}%
  \fi
  \edef\slides@footcurrent{\the\c@framenumber}%
  \ifx\slides@footcurrent\slides@footlastframe\else
    \global\let\slides@footlastframe\slides@footcurrent
    \global\advance\slides@footframe by 1\relax
    \if@filesw
      \immediate\write\@auxout{\string\slides@sectionframes
        {\slides@footlastsection}{\the\slides@footframe}}%
    \fi
  \fi
}
% Dots for the frames of the section, with a count when there are too many.
\newcommand*{\slides@footdots}{%
  \edef\slides@foottotal{%
    \ifcsname slides@frames@\slides@footlastsection\endcsname
      \csname slides@frames@\slides@footlastsection\endcsname
    \else
      \the\slides@footframe
    \fi
  }%
  \ifnum\slides@foottotal>\slides@footmaxdots\relax
    \the\slides@footframe/\slides@foottotal
  \else
    \tikzexternaldisable
    \begin{tikzpicture}[baseline=-1.55pt, x=4.4pt]
      \mmzUnmemoizable
      \foreach \slides@dot in {1,...,\slides@foottotal}{
        \ifnum\slides@dot=\slides@footframe\relax
          \fill (\slides@dot,0) circle[radius=1.5pt];
        \else
          \draw[line width=.35pt] (\slides@dot,0) circle[radius=1.3pt];
        \fi
      }
    \end{tikzpicture}%
    \tikzexternalenable
  \fi
}
% Typeset #2, scaled down if it is wider than #1.
\newsavebox{\slides@footbox}
\newcommand*{\slides@footfit}[2]{%
  \sbox{\slides@footbox}{#2}%
  \ifdim\wd\slides@footbox>#1\relax
    \resizebox{#1}{!}{\usebox{\slides@footbox}}%
  \else
    \usebox{\slides@footbox}%
  \fi
}
% A long author block is too tall for the bar: leave it out and warn once.
\newif\ifslides@footauthorwarned
\newcommand*{\slides@footauthor}{%
  \sbox{\slides@footbox}{\insertshortauthor}%
  \ifdim\dimexpr\ht\slides@footbox+\dp\slides@footbox\relax>1.5\baselineskip
    \ifslides@footauthorwarned\else
      \global\slides@footauthorwarnedtrue
      \ClassWarningNoLine{slides}{The author is too tall for the footer.
        Set a short name with \string\author[short]{...}}%
    \fi
  \else
    \slides@footfit{\dimexpr.19\paperwidth-2\dimexpr\slides@footinset\relax\relax}
      {\insertshortauthor}%
  \fi
}
\newcommand*{\slides@footmiddle}{%
  \insertshorttitle
  \ifnum\c@section>0\relax
    \enspace\textbullet\enspace\insertsectionhead\enspace\slides@footdots
  \fi
}
% One rule for the whole bar: adjacent boxes can leave a seam in PDF viewers.
\setbeamertemplate{footline}{%
  \slides@footcount
  \usebeamerfont{footline}%
  \hbox to\paperwidth{%
    \vrule width0pt height\dimexpr\slides@footheight+3pt\relax % clear footnotes
    \rlap{%
      \usebeamercolor[bg]{footline}%
      \vrule width\paperwidth height\slides@footheight depth\slides@footdepth
    }%
    \usebeamercolor[fg]{footline}%
    \hbox to.19\paperwidth{\hskip\slides@footinset\slides@footauthor\hss}%
    \hbox to.62\paperwidth{%
      \hss\slides@footfit{.62\paperwidth}{\slides@footmiddle}\hss
    }%
    \hskip.11\paperwidth
    \hbox to.08\paperwidth{%
      \usebeamercolor[bg]{footline frame count}%
      \rlap{\vrule width.08\paperwidth height\slides@footheight depth\slides@footdepth}%
      \usebeamercolor[fg]{footline frame count}%
      \hss\insertframenumber\,/\,\inserttotalframenumber\hss
    }%
  }%
}
% denser title bar. The bottom margin starts at the baseline and the top margin
% starts above the capitals, so the bottom one is larger to centre the text.
\setbeamerfont{frametitle}{size=\fontsize{11}{13}\selectfont}
\molochset{
  frametitle margin top=5.5pt,
  frametitle margin bottom=7pt
}
% solid background for blocks
\molochset{block=fill}
% remove section frames
% \molochset{sectionpage=none}
% enable subsection frames
\molochset{subsectionpage=progressbar}
% table of contents
\setbeamertemplate{section in toc}[sections numbered]
\makeatletter
\patchcmd{\beamer@sectionintoc}{\vskip1.5em}{\vskip0.3em}{}
  {\ClassWarning{slides}{Could not tighten section spacing in the table of contents}}
\makeatother
% smaller first-level bullet points
\setbeamertemplate{itemize item}{\textbullet}
% smaller bibliography entries
\renewcommand*{\bibfont}{\scriptsize}

% figures uncover animation (cf. https://tex.stackexchange.com/a/354033/95423)
\setbeamercovered{transparent}
\newcommand<>{\uncovergraphics}[2][{}]{
    \begin{tikzpicture}
        \node[anchor=south west,inner sep=0] (B) at (4,0)
            {\includegraphics[#1]{#2}};
        \alt#3{}{%
            \fill [draw=none, fill=bg, fill opacity=0.9] (B.north west) -- (B.north east) -- (B.south east) -- (B.south west) -- (B.north west) -- cycle;
        }
    \end{tikzpicture}
}

% fonts and symbols
\RequirePackage{emoji}
% custom font size for a slide (cf. https://tex.stackexchange.com/a/401409)
\newcommand{\customframefont}[1]{
    \setbeamertemplate{itemize/enumerate body begin}{#1}
    \setbeamertemplate{itemize/enumerate subbody begin}{#1}
}
\NewDocumentEnvironment{framefont}{m +b}{
    \customframefont{#1} % for itemize/enumerate
    {#1 % For the text outside itemize/enumerate
    #2
    }
    \customframefont{\normalsize}
}{}
% tikz
\usetikzlibrary{arrows.meta}
% math
\RequirePackage{amsmath,amssymb}
% resizebox
\RequirePackage{graphicx}
\RequirePackage{packages/slides-partners}
\RequirePackage{subcaption}
% tables
\RequirePackage{array}
\RequirePackage{tabularx}
\RequirePackage{booktabs}
% avoid spacing between rules and row background
\setlength{\abovetopsep}{0pt}
\setlength{\belowrulesep}{0pt}
\setlength{\aboverulesep}{0pt}
\setlength{\belowbottomsep}{0pt}
% vertical row padding
\renewcommand{\arraystretch}{1.5} % scales vertical row spacing
% vertical centering of text in all tabularx columns
\renewcommand\tabularxcolumn[1]{m{#1}}
% alternate row color
\definecolor{rowgray}{gray}{0.94}
% links
\RequirePackage{hyperref}
\hypersetup{
    colorlinks,
    anchorcolor=ubo,
    citecolor=ubo,
    linkcolor=,
    urlcolor=ubo
}

% redefine title page
% https://tex.stackexchange.com/a/396409
% Section 6.2.3 of:
% https://ctan.math.illinois.edu/macros/latex/contrib/beamer-contrib/themes/moloch/moloch.pdf
\makeatletter
\setbeamertemplate{title page}{
  % Use the theme's margins rather than a full-paper-height box, which placed
  % the footer almost on the page edge. Stretch only the space above the footer.
  % If the content is too tall, shrink the top space so the footer keeps its
  % bottom margin and the title moves up instead.
  \begin{minipage}[t][\dimexpr\paperheight-2\beamer@leftmargin\relax][s]{\textwidth}
    \vspace*{\dimexpr .04\paperheight\relax minus 1fill}
    \ifx\inserttitle\@empty\else\usebeamertemplate*{title}\fi
    \ifx\insertsubtitle\@empty\else\usebeamertemplate*{subtitle}\fi
    \vspace{.2cm}
    \ifx\insertdate\@empty\else\usebeamertemplate*{date}\fi
    \usebeamertemplate*{title separator}
    \ifx\beamer@shortauthor\@empty\else\usebeamertemplate*{author}\fi
    \vfill
    \begin{columns}[b,onlytextwidth]
        \column{0.52\linewidth}
        \ifx\insertinstitute\@empty\else\usebeamertemplate*{institute}\fi
        \column{0.44\linewidth}
        \insertpartnerlogos
    \end{columns}
    \vspace*{0pt}
  \end{minipage}
}
\makeatother