%% $Id: gentium-otf.sty 1058 2025-01-08 08:02:06Z herbert $
%%
%% This file is distributed under the terms of the LaTeX Project Public
%% License from CTAN archives in directory  macros/latex/base/lppl.txt.
%% Either version 1.3 or, at your option, any later version.
%%
%
\ProvidesPackage{gentium-otf}[%
  2025/01/04 v. 0.01 (Herbert Voss) Supports gentium fonts for lualatex and xelatex.] 

\RequirePackage{iftex,xkeyval,textcomp,fontspec}

\def\@gentium@book{}
\DeclareOptionX{book}{\def\@gentium@book{Book}}

\newcommand*\gentiumRM@scale{1}  
\DeclareOptionX{ScaleRM}{\renewcommand*{\gentiumRM@scale}{#1}}

\newcommand*\gentium@math{}  
\newcommand*\gentium@math@features{}  
\DeclareOptionX{math}{\renewcommand*{\gentium@math}{#1}}
\DeclareOptionX{mathFeatures}{\renewcommand*{\gentium@math@features}{#1}}

\newcommand*\gentium@sans{}  
\newcommand*\gentium@sans@features{}  
\DeclareOptionX{sans}{\renewcommand*{\gentium@sans}{#1}}
\DeclareOptionX{sansFeatures}{\renewcommand*{\gentium@sans@features}{#1}}

\newcommand*\gentium@mono{}  
\newcommand*\gentium@mono@features{}  
\DeclareOptionX{mono}{\renewcommand*{\gentium@mono}{#1}}
\DeclareOptionX{monoFeatures}{\renewcommand*{\gentium@mono@features}{#1}}

\def\gentium@defaultfeatures{}
\DeclareOptionX{defaultfeatures}{\def\gentium@defaultfeatures{#1}}

\ProcessOptionsX\relax

\ifxetex\XeTeXtracingfonts=1\fi
\defaultfontfeatures[\rmfamily]{
     Ligatures = TeX ,
     SmallCapsFeatures={Letters=SmallCaps},%       \ifluatex,Renderer=Basic\fi}, 
     \gentium@defaultfeatures
}

%------------------------   filenames start -------------------------
%   1.       GentiumBookPlus-Bold.ttf  
%   2. GentiumBookPlus-BoldItalic.ttf  
%   3.     GentiumBookPlus-Italic.ttf  
%   4.    GentiumBookPlus-Regular.ttf  
%   5.           GentiumPlus-Bold.ttf  
%   6.     GentiumPlus-BoldItalic.ttf  
%   7.         GentiumPlus-Italic.ttf  
%   8.        GentiumPlus-Regular.ttf  

\edef\gentium@main@font{Gentium\@gentium@book Plus}% GentiumPlus  or GentiumBookPlus

\if$\gentium@math$\else
  \RequirePackage{unicode-math}
  \expandafter\setmathfont\expandafter[\gentium@math@features]{\gentium@math}
\fi

\if$\gentium@sans$\else
  \expandafter\setsansfont\expandafter[\gentium@sans@features]{\gentium@sans}
\fi

\if$\gentium@mono$\else
  \expandafter\setmonofont\expandafter[\gentium@mono@features]{\gentium@mono}
\fi

\setmainfont{\gentium@main@font}[ 
  Scale          = \gentiumRM@scale ,
  UprightFont    = *-Regular,
  ItalicFont     = *-Italic,
  ItalicFeatures = { SmallCapsFont = *-Italic },
  SlantedFont    = *-Regular,
  SlantedFeatures= {FakeSlant=0.2},
  BoldFont       = *-Bold,
  BoldFeatures   = { SmallCapsFont = *-Bold },
  BoldItalicFont = *-BoldItalic,
  BoldItalicFeatures = { SmallCapsFont = *-BoldItalic },
  BoldSlantedFont= *-Bold,
  BoldSlantedFeatures= {FakeSlant=0.2, SmallCapsFont = *-bold },
  SmallCapsFont  = *-Regular,
%  SmallCapsFeatures={RawFeature=+smcp},
  SmallCapsFeatures={Letters=SmallCaps}, 
  Extension      = .ttf  
]

\def\Lctosc#1{{\addfontfeature{RawFeature=+c2sc}#1}}
\def\LCtoSC{\@ifnextchar-\L@CtoSC\L@@CtoSC}
\def\L@CtoSC-{\addfontfeature{RawFeature=-c2sc}}
\def\L@@CtoSC#1{\addfontfeature{RawFeature=+c2sc}\ifx#1+\else#1\fi}

\def\Lctosmcp#1{{\addfontfeature{RawFeature={+c2sc,+smcp}}#1}}
\def\LCtoSMCP{\@ifnextchar-\L@CtoSMCP\L@@CtoSMCP}
\def\L@CtoSMCP-{\addfontfeature{RawFeature={-c2sc,-smcp}}}
\def\L@@CtoSMCP#1{\addfontfeature{RawFeature={+c2sc,+smcp}}\ifx#1+\else#1\fi}

\def\Lliga#1{{\addfontfeature{RawFeature=+liga}#1}}
\def\LLIGA{\@ifnextchar-\L@LIGA\L@@LIGA}
\def\L@LIGA-{\addfontfeature{RawFeature=-liga}}
\def\L@@LIGA#1{\addfontfeature{RawFeature=+liga}\ifx#1+\else#1\fi}

\def\Lss#1#2#3{{\addfontfeature{RawFeature=+ss#1#2}#3}}
\def\LSS#1#2{\addfontfeature{RawFeature=+ss#1#2}}

\def\Lcv{\@ifnextchar[\Lcv@i{\Lcv@i[1]}}
\def\Lcv@i[#1]#2#3#4{{\addfontfeature{RawFeature={+cv#2#3=#1}}#4}}
\def\LCV#1#2{\@ifnextchar[\LCV@i{\LCV@i[1]}}
\def\LCV[#1]#2#3{\addfontfeature{RawFeature={+cv#2#3=#1}}}

\def\Llang#1{\addfontfeature{Script=Cyrillic,Language=Serbian}}

\def\Lsup#1{{\addfontfeature{RawFeature=+sups}#1}}
\def\LSUP{\@ifnextchar-\L@SUP\L@@SUP}
\def\L@SUP-{\addfontfeature{RawFeature=-sups}}
\def\L@@SUP#1{\addfontfeature{RawFeature=+sups}\ifx#1+\else#1\fi}

\def\Lsub#1{{\addfontfeature{RawFeature=+subs}#1}}
\def\LSUB{\@ifnextchar-\L@SUB\L@@SUB}
\def\L@SUB-{\addfontfeature{RawFeature=-subs}}
\def\L@@SUB#1{\addfontfeature{RawFeature=+subs}\ifx#1+\else#1\fi}

\def\Lfrac#1{{\addfontfeature{RawFeature=+frac}#1}}
\def\LFRAC{\@ifnextchar-\L@FRAC\L@@FRAC}
\def\L@FRAC-{\addfontfeature{RawFeature=-frac}}
\def\L@@FRAC#1{\addfontfeature{RawFeature=+frac}\ifx#1+\else#1\fi}


\endinput