fonts-ebook.sty

% \needsTeXFormat{LaTeX2e}

% This is breaking on my install, that makes no sense.

\ProvidesPackage{fonts-ebook}[2014/04/01 v0.0 Fonts for display on ereaders]

\RequirePackage{iftex}
\ifXeTeX
	\RequirePackage{xltxtra}
	\RequirePackage{polyglossia}
	\setmainlanguage[variant=us]{english}
\else\ifLuaTeX
	\RequirePackage{luatextra}
	\RequirePackage[english]{babel}
	\RequirePackage{lualatex-math}
\else\ifPDFTeX
	\RequirePackage{fixltx2e, metalogo}
	\RequirePackage[english]{babel}
\else
%% Set up some defaults in case we compile this on some version of LaTeX
%% other than LuaLaTeX or XeLaTeX, and which supports unicode-math.
	\RequirePackage{fixltx2e, realscripts, metalogo}
	\RequirePackage[english]{babel}
\fi\fi\fi

%% The xfrac package redefines \oldstylenums in a way that breaks fontspec, so
%% include xfrac before fontspec:
\RequirePackage{xfrac}
\RequirePackage{graphicx}
\RequirePackage{ellipsis}
\RequirePackage{xcolor} % Perhaps set to the Gray model?

\DeclareRobustCommand{\altcolor}{\color{darkgray}}

\ifPDFTeX
	%% A fallback for backward compatibility.
	%% Override most of these with stix:
	\RequirePackage{amssymb}
	\RequirePackage{tgtermes}
	\RequirePackage{inconsolata}
	\RequirePackage{tgheros}
	\RequirePackage{tgadventor}
	\RequirePackage[notext]{stix}
	\RequirePackage[T1]{fontenc}
	\RequirePackage[utf8x]{inputenc} % Or [utf8] if this causes errors.

%% "With amsmath v2.14 or newer, it is recommended to load it (and/or packages
%% that load it) after the stix package. Older versions of amsmath must be
%% loaded before the stix package, otherwise errors will arise.
	\RequirePackage{mathtools}
	\RequirePackage{amsthm}	% Consider using ntheorem

%% Lining numbers are the default in this setup, so make this a no-op.
	\DeclareRobustCommand{\liningnums}[1]{#1}

	\DeclareRobustCommand{\uppi}{\ensuremath\mathrm\pi}

	\DeclareRobustCommand{\titleface}{\rmfamily\bfseries\scshape}
	\DeclareRobustCommand{\captionface}{\sffamily}
	\DeclareRobustCommand{\labelfamily}{\fontfamily{qhv}\selectfont}
	\DeclareRobustCommand{\headerfamily}{\sffamily}

\else
%% This is the preferred version:
\RequirePackage{mathtools}
\RequirePackage{amsthm}	% Consider using ntheorem
%% Override most of these if using unicode math fonts:
\RequirePackage{amssymb}

\RequirePackage{fontspec}
\RequirePackage[ math-style=ISO,
             vargreek-shape=TeX,
             slash-delimiter=frac
           ]{unicode-math}
\RequirePackage{newunicodechar}

\defaultfontfeatures{ Ligatures=TeX,
                      Scale=MatchLowercase }

%% Lining numbers don’t quite work out of the box for some of these fonts;
%% we must explicitly turn old-style numbers off.
\DeclareRobustCommand{\liningnums}[1]{\addfontfeature{RawFeature=-onum,Numbers=Lining} {#1}}
%% Enable old-style numbers as an OpenType font feature.
\DeclareRobustCommand{\oldstylenums}[1]{\addfontfeature{RawFeature=-lnum,Numbers=OldStyle} {#1}}

\setmainfont[ Numbers={Proportional},
% \ifLuaTeX     Renderer=Basic,				\fi
               Ligatures={Common, Rare, TeX},
             ]{TeX Gyre Termes}

% Gillius ADF No2 (a Gill Sans clone) is a good match for Palatino.  It does
% not, however, come with small caps features.
\setsansfont[ Ligatures={Common, TeX}
            ]{Gillius ADF No2}
% Alternatives:
% \setsansfont[Ligatures={Common,TeX}]{Myriad Web Pro}
% \setsansfont[Ligatures={Common,TeX}]{TeX Gyre Adventor}

\setmonofont{Inconsolata}

\setmathfont{XITS Math}

%% The following are in the TeX Live distribution, and also good examples of
%% how to select alternative alphabets.

\setmathfont[ range={\mathcal,\mathbfcal},
              Scale=MatchUppercase,
              StylisticSet=1
            ]{XITS Math}

%\setmathfont[ range={\mathcal,\mathbfcal},
%              Scale=MatchUppercase,
%              Style=Alternate
%            ]{Asana Math}

\setmathfont[ range={\mathscr,\mathbfscr},
              Scale=MatchUppercase,
            ]{XITS Math}

%% XITS Math actually supports a few additional math alphabets that
%% unicode-math does not, through its stylistic sets.  Commands to use them
%% could go here.

\newfontface\titleface[ Letters=SmallCaps,
                        Numbers={Proportional, Lining},
% \ifLuaTeX               Renderer=Basic,				\fi
                        Ligatures={Common, Rare, TeX}
                      ]{TeX Gyre Termes Bold}
\newfontface\captionface{Gillius ADF No2}
\newfontfamily\labelfamily[ Numbers={Monospaced},
% \ifLuaTeX                   Renderer=Basic,			\fi
                            Scale=MatchUppercase]{TeX Gyre Heros}
\newfontfamily\headerfamily[ Scale=MatchUppercase,
%                             Numbers={Proportional, Lining}
                           ]{Gillius ADF No2}
%\newfontfamily\headerfamily{TeX Gyre Adventor}

\setmathfont[range="220E, Scale=MatchUppercase]{XITS Math}
\DeclareRobustCommand{\QED}{\ensuremath{\mathup\char"220E}}

\fi

%% Microtype needs to be loaded after certain other packages, including
%% inputenc, babel and fontspec.
\RequirePackage[verbose]{microtype}

% Really Euler:
\DeclareMicrotypeAlias{NeoEuler}{eus}

% \RequirePackage{breqn}

\RequirePackage[sf, bf, medium, compact]{titlesec}      % customizing section titles
% \titleformat{\section}{\headerfamily\bfseries\large}{}{0em}{}
% \titleformat{\subsection}{\headerfamily\bfseries}{}{0em}{}
\titleformat{\subsubsection}[runin]{\headerfamily\bfseries}{}{0em}{}
\titlespacing{\subsubsection}{0pt}{5pt}{5pt}

%% Display section numbers as lining, numbering within sections as oldstyle.
\def\thesection{\labelfamily \liningnums{\arabic{section}}}
\def\thesubsection{\labelfamily{\liningnums{\arabic{section}}.\oldstylenums{\arabic{subsection}}}}

\titlelabel{\makebox[1cm][l]{\thetitle}}

% This is a bit excessive

% \numberwithin{equation}{subsection}
% \renewcommand{\theequation}{\normalfont \liningnums{\arabic{section}}.\oldstylenums{\arabic{subsection}}.\oldstylenums{\arabic{equation}}}

\numberwithin{equation}{section}
\renewcommand{\theequation}{\normalfont \liningnums{\arabic{section}}.\oldstylenums{\arabic{equation}}}

% The Q.E.D. symbol was not showing up properly, forcing me to redefine it.
% The reason turned out to be that the unicode-math package maps the
% \qedsymbol command to a code point my font used for a different glyph.
% This meant I got to research the history of the symbol and decide which
% variant to use.
%
% Paul Halmos first introduced it to mathematics, and one name for it is
% therefore the Halmos symbol.  In other contexts, it's called the tombstone.
% Most of his papers scanned by Google do not in fact use the symbol, but his
% text on measure theory uses a filled rectangle.  His autobiography says
% it "sometimes looks like" an empty rectangle.  The festschrift _Paul Halmos:
% Celebrating 50 Years of Mathematics_ uses an empty diamond.  The more recent
% textbooks I checked used either the TeX-default empty square or a filled
% square.
% 
% I therefore feel justified in using the Unicode character for Q.E.D. and
% choosing its appearance by specifying a math font to take the glyph from.
% XITS Math uses an attractive filled rectangle, as in Halmos' 1950 book on
% measure theory and the 1997 edition of Donald Knuth's own _The Art
% of Computer Programming_.
\DeclareRobustCommand{\qedsymbol}{\ensuremath{\QED}}

\endinput