% musixftab.tex : french tablature definitions for MusiXTeX
%
% usage: 
%
%    \input musixtex
%    \input musixftab
%    ...
%
%   musixftab.tex is free software; you can redistribute it and/or modify
%   it under the terms of the GNU General Public License as published by
%   the Free Software Foundation; either version 2, or (at your option)
%   any later version.
%
%   musixftab.tex is distributed in the hope that it will be useful,
%   but WITHOUT ANY WARRANTY; without even the implied warranty of
%   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
%   GNU General Public License for more details.
%
%   You should have received a copy of the GNU General Public License
%   along with MusiXTeX; see the file COPYING.  If not, write to
%   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
%   Boston, MA 02111-1307, USA.
%
%   Copyright 2021  Bob Tennent rdt@cs.queensu.ca
%
\immediate\write16{musixftab\space<2017/02/10>}
\ifx\undefined\startpiece\errmessage{Input musixtex.tex before musixftab.tex}\fi

\font\tabfntthirteen=frenchtab at 4pt
\font\tabfntsixteen=frenchtab at 5pt
\font\tabfnttwenty=frenchtab at 6pt
\font\tabfnttwentyfour=frenchtab at 7pt
\font\tabfnttwentynine=frenchtab at 9pt

\makeatletter

%  need to raise note boxes 0.25ex for frenchtab.pfb

\def\tabbox#1#2{%
  \setbox0=\hbox{\tabfnt #2}%
  \stringraise\nblines
  \advance\stringraise by -#1
  \multiply\stringraise by 2
  \advancefalse\def\q@u{}\loffset{0.45}{\@nq{\the\stringraise}}%
  \iftabstylespace\else\advance\stringraise-1\fi
  \special{ps: 1 setgray}%
  \ccharnote{\the\stringraise}{\vrule height \ht0 width \wd0 depth \dp0}%
  \special{ps: 0 setgray}%
  \ccharnote{\the\stringraise}{\raise 0.25ex\box0}%
}
% \ltabbox does the same as \tabbox, except that it produces 
% left-outlined symbols
\def\ltabbox#1#2{\setbox0=\hbox{\tabfnt #2}%
  \stringraise\nblines
  \advance\stringraise by -#1
  \multiply\stringraise by 2
  \advancefalse\def\q@u{}\loffset{0.2}{\@nq{\the\stringraise}}%
  \iftabstylespace\else\advance\stringraise-1\fi
  \special{ps: 1 setgray}%
  \zcharnote{\the\stringraise}{\vrule height \ht0 width \wd0 depth \dp0}%
  \special{ps: 0 setgray}%
  \zcharnote{\the\stringraise}{\raise 0.25ex\box0}%
}
% \rtabbox does the same as \tabbox, except that it produces 
% right-outlined symbols
\def\rtabbox#1#2{\setbox0=\hbox{\tabfnt #2}%
  \stringraise\nblines
  \advance\stringraise by -#1
  \multiply\stringraise by 2
  \advancefalse\def\q@u{}\loffset{0.75}{\@nq{\the\stringraise}}%
  \iftabstylespace\else\advance\stringraise-1\fi
  \special{ps: 1 setgray}%
  \lcharnote{\the\stringraise}{\vrule height \ht0 width \wd0 depth \dp0}%
  \special{ps: 0 setgray}%
  \lcharnote{\the\stringraise}{\raise 0.25ex\box0}%
}

\makeatother


\def\tab#1#2{%
\stringnum=#1
\ifnum\stringnum>\nblines
\nslashes=\stringnum
\advance\nslashes by -\nblines
\iftabstylespace\advance\nslashes by -1\fi
\def\numslashes{\the\nslashes}
\ifcase\numslashes\tabbox{#1}{#2}\or\zcn{-3}{\tabfnt V0}\or\zcn{-3}{\tabfnt W0}\or\zcn{-3}{\tabfnt X0}\or\zcn{-3}{\tabstringfnt\bf 4}\or\zcn{-3}{\tabstringfnt\bf 5}\or\zcn{-3}{\tabstringfnt\bf 6}\or\zcn{-3}{\tabstringfnt\bf 7}\fi%
\else\tabbox{#1}{#2}\fi\sk}

% left spilling \tab
\def\ltab#1#2{%
\stringnum=#1
\ifnum\stringnum>\nblines
\nslashes=\stringnum
\advance\nslashes by -\nblines
\iftabstylespace\advance\nslashes by -1\fi
\def\numslashes{\the\nslashes}
\ifcase\numslashes\ltabbox{#1}{#2}\or\zcn{-3}{\tabfnt V0}\or\zcn{-3}{\tabfnt W0}\or\zcn{-3}{\tabfnt X0}\or\zcn{-3}{\tabstringfnt\bf 4}\or\zcn{-3}{\tabstringfnt\bf 5}\or\zcn{-3}{\tabstringfnt\bf 6}\or\zcn{-3}{\tabstringfnt\bf 7}\fi%
\else\ltabbox{#1}{#2}\fi\sk}

% right spilling  \tab
\def\rtab#1#2{%
\stringnum=#1
\ifnum\stringnum>\nblines
\nslashes=\stringnum
\advance\nslashes by -\nblines
\iftabstylespace\advance\nslashes by -1\fi
\def\numslashes{\the\nslashes}
\ifcase\numslashes\rtabbox{#1}{#2}\or\zcn{-3}{\tabfnt V0}\or\zcn{-3}{\tabfnt W0}\or\zcn{-3}{\tabfnt X0}\or\zcn{-3}{\tabstringfnt\bf 4}\or\zcn{-3}{\tabstringfnt\bf 5}\or\zcn{-3}{\tabstringfnt\bf 6}\or\zcn{-3}{\tabstringfnt\bf 7}\fi%
\else\rtabbox{#1}{#2}\fi\sk}

% \chord-tab symbol. Same as \tab, but no \sk is given, so multiple 
% symbols can be placed above one another
\def\ztab#1#2{%
\stringnum=#1
\ifnum\stringnum>\nblines
\nslashes=\stringnum
\advance\nslashes by -\nblines
\iftabstylespace\advance\nslashes by -1\fi
\def\numslashes{\the\nslashes}
\ifcase\numslashes\tabbox{#1}{#2}\or\zcn{-3}{\tabfnt V0}\or\zcn{-3}{\tabfnt W0}\or\zcn{-3}{\tabfnt X0}\or\zcn{-3}{\tabstringfnt\bf 4}\or\zcn{-3}{\tabstringfnt\bf 5}\or\zcn{-3}{\tabstringfnt\bf 6}\or\zcn{-3}{\tabstringfnt\bf 7}\fi%
\else\tabbox{#1}{#2}\fi}

% left spilling \ztab
\def\zltab#1#2{%
\stringnum=#1
\ifnum\stringnum>\nblines
\nslashes=\stringnum
\advance\nslashes by -\nblines
\iftabstylespace\advance\nslashes by -1\fi
\def\numslashes{\the\nslashes}
\ifcase\numslashes\ltabbox{#1}{#2}\or\zcn{-3}{\tabfnt V0}\or\zcn{-3}{\tabfnt W0}\or\zcn{-3}{\tabfnt X0}\or\zcn{-3}{\tabstringfnt\bf 4}\or\zcn{-3}{\tabstringfnt\bf 5}\or\zcn{-3}{\tabstringfnt\bf 6}\or\zcn{-3}{\tabstringfnt\bf 7}\fi%
\else\ltabbox{#1}{#2}\fi}

% right spilling \ztab
\def\zrtab#1#2{%
\stringnum=#1
\ifnum\stringnum>\nblines
\nslashes=\stringnum
\advance\nslashes by -\nblines
\iftabstylespace\advance\nslashes by -1\fi
\def\numslashes{\the\nslashes}
\ifcase\numslashes\rtabbox{#1}{#2}\or\zcn{-3}{\tabfnt V0}\or\zcn{-3}{\tabfnt W0}\or\zcn{-3}{\tabfnt X0}\or\zcn{-3}{\tabstringfnt\bf 4}\or\zcn{-3}{\tabstringfnt\bf 5}\or\zcn{-3}{\tabstringfnt\bf 6}\or\zcn{-3}{\tabstringfnt\bf 7}\fi%
\else\rtabbox{#1}{#2}\fi}

\endinput