% ROGLE 20th-anniversary proposal typography for LaTeX (brand/marca).
% Same system as Alberto Lacort's personal brand (profile/brand/marca.sty):
%   text     Palatino      (system under LuaLaTeX/XeLaTeX; newpxtext otherwise)
%   titles   Palatino bold
%   labels   Gill Sans     (secondary text only: captions, running heads, table headers;
%                           system under LuaLaTeX/XeLaTeX; gillius otherwise)
%   formulas newpxmath (Pagella)
%   code     Inconsolata
% Engines: pdfLaTeX, LuaLaTeX, XeLaTeX.
% Usage: \usepackage{rogle20-fonts}  ->  \rogletitlefont for titles in Palatino bold, \sffamily for Gill Sans.
% Decision record: brand/marca/decisiones/tipografia.md.
% In Beamer it also sets professionalfonts and Palatino bold frame and cover titles.
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{rogle20-fonts}[2026/09/30 ROGLE 20th-anniversary proposal fonts]
\RequirePackage{iftex}

% amssymb before newpxmath: a later \usepackage{amssymb} (Pandoc and Quarto
% templates) would clash with the symbols newpxmath defines.
\RequirePackage{amssymb}
% amsthm must precede newpxmath (both define \openbox). Beamer loads it.
\@ifclassloaded{beamer}{}{\RequirePackage{amsthm}}
\ifPDFTeX
  \RequirePackage[T1]{fontenc}
\fi
\RequirePackage{newpxtext}
\RequirePackage{newpxmath}
\ifPDFTeX\else
  % Under fontspec, newpxmath resolves operators (\sin, \mathrm, digits)
  % to Latin Modern. Point them to newpx's own OT1 Pagella instead.
  \DeclareSymbolFont{operators}{OT1}{zpltlf}{m}{n}
  \SetSymbolFont{operators}{bold}{OT1}{zpltlf}{b}{n}
  \DeclareMathAlphabet{\mathit}{OT1}{zpltlf}{m}{it}
  \SetMathAlphabet{\mathit}{bold}{OT1}{zpltlf}{b}{it}
  \DeclareMathAlphabet{\mathbf}{OT1}{zpltlf}{b}{n}
\fi
\RequirePackage{gillius}
\ifPDFTeX
  \RequirePackage[varqu]{inconsolata}
\else
  % inconsolata.sty is pdfLaTeX-only; use the same font from its OTF files.
  \setmonofont{Inconsolatazi4}[
    Extension=.otf, UprightFont=*-Regular, BoldFont=*-Bold]
  % Brand fonts from the system when installed; the clones above are the fallback.
  % newpxtext sets the main font again at \begin{document}, so Palatino goes after.
  \newcommand{\rogle@systemfont}[3]{% setter, Mac name, Windows name
    \IfFontExistsTF{#2}{#1{#2}}{\IfFontExistsTF{#3}{#1{#3}}{}}}
  \AtBeginDocument{\rogle@systemfont{\setmainfont}{Palatino}{Palatino Linotype}}
  \rogle@systemfont{\setsansfont}{Gill Sans}{Gill Sans MT}
\fi
\renewcommand{\familydefault}{\rmdefault}

% Title font: Palatino, bold. Gill Sans (\sffamily) is for secondary text only.
\newcommand{\rogletitlefont}{\rmfamily\bfseries}

% Beamer: keep newpxmath formulas (its default font theme would switch them to
% Computer Modern Sans). Frame and cover titles in Palatino bold.
\@ifclassloaded{beamer}{%
  \usefonttheme{professionalfonts}
  \setbeamerfont{frametitle}{family=\rmfamily,series=\bfseries}
  \setbeamerfont{title}{family=\rmfamily,series=\bfseries}
}{}

\endinput