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\NeedsTeXFormat{LaTeX2e}
\ProvidesClass{musicography}
[2017/08/29 Symbols for music writing with pdflatex]

% Copyright 2017 Andrew A. Cashner, andrewacashner@gmail.com

% This work may be distributed and/or modified under the 
% conditions of the LaTeX Project Public License, either
% version 1.3 of this license or (at your option) any 
% later version.
% The latest version of this license is in 
%    http://www.latex-project.org/lppl.txt
% and version 1.3 or later is part of all distributions
% of LaTeX version 2005/12/01 or later.
%
% This work has the LPPL maintenance status `maintained'.
% The Current Maintainer of this work is Andrew A. Cashner.
% This work consists of the package file musicography.sty
% and the documentation file musicography.tex.

% CHANGE LOG
% 2017-08-29 First version on CTAN
% 2017-04-12 Created

\newif\ifLargeFont
\LargeFontfalse
\DeclareOption{bigger}{\LargeFonttrue}
\ProcessOptions\relax

\RequirePackage{xparse}

\ifLargeFont
    \newfont{\musFont}{musix13}
    \newfont{\musFontBig}{musix16}
    \newfont{\musFontLarge}{musix20}
\else
    \newfont{\musFont}{musix11}
    \newfont{\musFontBig}{musix13}
    \newfont{\musFontLarge}{musix16}
\fi

% Font for numbers in \musStack
% Could redefine to use lining figures, math mode, sans-serif, etc.
% Example for ebgaramond: \renewcommand{\musNumFont}[1]{\liningnums{#1}}
\NewDocumentCommand{\musNumFont}{}{}

% Print a music symbol from the \musFont, specifying space before, after, and
% baseline adjustment
%  #1 optional font command (default: \musFont)
%  #2 kern before    
%  #3 raisebox value 
%  #4 kern after     
%  #5 symbol code (e.g., \symbol{4}) 
\NewDocumentCommand{\musSymbol}{ O{\musFont} m m m m }{%
    {#1\kern#2\raisebox{#3}{#5}\kern#4}%
}

% Accidentals
%  #1 symbol command for accidental
\NewDocumentCommand{\musAccidental}{ m }{%
    \musSymbol[\musFontLarge]{0.1em}{0.5ex}{-0.1pt}{#1}%
}
\NewDocumentCommand{\musFlat}       {}{\musAccidental{\symbol{90}}}
\NewDocumentCommand{\musDoubleFlat} {}{\musAccidental{\symbol{91}}}
\NewDocumentCommand{\musSharp}      {}{\musAccidental{\symbol{92}}}
\NewDocumentCommand{\musDoubleSharp}{}{\musAccidental{\symbol{93}}}
\NewDocumentCommand{\musNatural}    {}{\musAccidental{\symbol{94}}}

% Shorthand accidental commands
% These commands are defined differently in the semantic-markup package,
% so LaTeX will use musicography commands instead, if this package is called
% after
\let\fl\musFlat
\let\sh\musSharp
\let\na\musNatural

% Print a composite music symbol of a notehead plus stem
%  #1 Symbol musSymbol command for notehead
\NewDocumentCommand{\musStemmedNote}{ m }{%
    \musSymbol{0.05em}{0.5ex}{0.2em}{#1\musStem}%
}

% Stemmed note plus flag
%  #1 symbol command for base note
%  #2 symbol command for flag
\NewDocumentCommand{\musFlaggedNote}{ m m }{%
    \musSymbol{0.05em}{0.5ex}{0pt}{#1\musStem}%
    \musSymbol{0pt}{0pt}{0.9em}{#2}%
}

% Note plus dot
%  #1 \musSymbol command for note to be dotted
\NewDocumentCommand{\musDottedNote}{ m }{#1\musDot}

\NewDocumentCommand{\musStem}{}{%
    \musSymbol{0.955em}{0.55ex}{0pt}{\symbol{16}}%
}
\NewDocumentCommand{\musSegno}{}{%
    \musSymbol{0.55em}{-0.4ex}{1.5em}{\symbol{86}}%
}
\NewDocumentCommand{\musDot}{}{%
    \musSymbol{-0.2em}{-0.5ex}{0.7em}{\symbol{24}}%
}

\NewDocumentCommand{\musWhole}{}{%
    \musSymbol{0.05em}{0.5ex}{1.35em}{\symbol{9}}%
}
\NewDocumentCommand{\musHalf}{}{%
    \musStemmedNote{\symbol{9}}%
}
\NewDocumentCommand{\musQuarter}{}{%
    \musStemmedNote{\symbol{7}}%
}
\NewDocumentCommand{\musEighth}{}{%
    \musFlaggedNote{\symbol{8}}{\symbol{40}}%
}
\NewDocumentCommand{\musSixteenth}{}{%
    \musFlaggedNote{\symbol{8}}{\symbol{41}}%
}

\NewDocumentCommand{\musWholeDotted}{}{%
    \musDottedNote{\musWhole}%
}
\NewDocumentCommand{\musHalfDotted}{}{%
    \musDottedNote{\musHalf}%
}
\NewDocumentCommand{\musQuarterDotted}{}{%
    \musDottedNote{\musQuarter}%
}
\NewDocumentCommand{\musEighthDotted}{}{%
    \musDottedNote{\musEighth}%
}
\NewDocumentCommand{\musSixteenthDotted}{}{%
    \musDottedNote{\musSixteenth}%
}

% Command to stack numerals
% Adapted from harmony.sty's \ueber command 
\newdimen\tmpdima
\newdimen\tmpdimb
\newdimen\tmpdimc
\newdimen\tmpdimd
\newdimen\tmpdime
\newbox\nbxa
\newbox\nbxb
\newbox\nbxc
\newbox\nbxd
\newbox\nbxe
\newbox\nbxf
\newbox\nbxg
\newbox\nbxh
\newbox\nbxi

\NewDocumentCommand{\musStack}{ m m }{%
    \setbox\nbxi=\hbox{%
        \setbox\nbxa=\hbox{\scriptsize{\musNumFont{#1}}}%
        \setbox\nbxb=\hbox{\scriptsize{\musNumFont{#2}}}%
        \ifdim\wd\nbxa>\wd\nbxb%
        \tmpdima=\wd\nbxa%
        \else%
        \tmpdima=\wd\nbxb%
        \fi%
        \setbox\nbxa=\hbox to \tmpdima{%
            \scriptsize\hss{\musNumFont{#1}}\hss}%
        \setbox\nbxb=\hbox to \tmpdima{\scriptsize\hss{%
            \musNumFont{#2}}\hss}%
        \lower0.3ex\copy\nbxb%
        \kern-\wd\nbxb%
        \raise0.8\ht\nbxb%
        \box\nbxa%
    }%
    \unhbox\nbxi%
}

% Meter symbols
%  #1 symbol code for meter sign
\NewDocumentCommand{\musSymbolMeter}{ m }{%
    \raisebox{0.58ex}[8pt][2pt]{%
        {\kern-1pt\musFontBig\raisebox{0.3ex}{#1}\kern0.3em}%
    }%
}
% Meter that combines \meterC with numerals (e.g., C3 C3/2)
\NewDocumentCommand{\meterCplus}{ m }{\meterC{}\kern-0.7pt#1}

% Numeric meter signatures (e.g., 3/4)
%  #1 number on top
%  #2 number on bottom
\NewDocumentCommand{\musMeter}{ m m }{%
    \musStack{#1}{#2}\kern0.05em
}
% Same command used for figured bass
\NewDocumentCommand{\musFigures}{}{\musMeter}

\NewDocumentCommand{\meterC}{}{%
    \musSymbolMeter{\symbol{83}}%
}
\NewDocumentCommand{\meterCutC}{}{%
    \musSymbolMeter{\symbol{82}}%
}
% Ternary meters used in 16th--18th c. music
\NewDocumentCommand{\meterCThree}{}{%
    \meterCplus{\musNumFont{3}}%
}
\NewDocumentCommand{\meterCThreeTwo}{}{%
    \meterCplus{\musStack{3}{2}}%
}
% Ternary meter used in 17th-century Spanish music
\NewDocumentCommand{\meterCZ}{}{%
    \meterCplus{Z}%
}

% Aliases for older note names
\NewDocumentCommand{\musSemibreve}         {}{\musWhole}
\NewDocumentCommand{\musMinim}             {}{\musHalf}
\NewDocumentCommand{\musSemiminim}         {}{\musQuarter}
\NewDocumentCommand{\musCorchea}           {}{\musEighth}
\NewDocumentCommand{\musSemibreveDotted}   {}{\musWholeDotted}
\NewDocumentCommand{\musMinimDotted}       {}{\musHalfDotted}
\NewDocumentCommand{\musSeminiminimDotted} {}{\musQuarterDotted}
\NewDocumentCommand{\musCorcheaDotted}     {}{\musEighthDotted}

\endinput