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%D \module
%D [ file=meta-tex,
%D version=2006.06.07,
%D title=\CONTEXT\ Support Macros,
%D subtitle=\METAPOST\ fast text insertion,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
\registerctxluafile{meta-tex}{}
\unprotect
% Ok, we support this in MkIV because Mojca kept the pressure on. It
% looks a bit like a hack. But in fact this method is obsolete and
% eventually might go away.
\installcorenamespace{graphictextext}
\installcorenamespace{graphictexdepth}
\installcorenamespace{graphictexarguments}
\unexpanded\def\startTeXtexts#1\stopTeXtexts
{#1}
\let\stopTeXtexts\relax
\unexpanded\def\TeXtext
{\dosingleempty\meta_textext}
\def\meta_textext[#1]#2#3% contrary to mkii we don't process yet but we do expand
{\setxvalue{\??graphictextext#2}{\meta_textext_indeed{#1}{#3}}}
\unexpanded\def\meta_textext_indeed#1#2%
{\begingroup
\setbox\nextbox\hbox{#2}%
\ifcsname\??graphictexdepth#1\endcsname
\lastnamedcs
\else
\syst_boxes_lower_nextbox_dp
\fi
\box\nextbox
\endgroup}
\def\getTeXtext#1%
{\begincsname\??graphictextext#1\endcsname}
\letvalue{\??graphictexdepth d}\syst_boxes_lower_nextbox_dp
\letvalue{\??graphictexdepth \s!depth}\syst_boxes_lower_nextbox_dp
\letvalue{\??graphictexdepth n}\donothing
\letvalue{\??graphictexdepth\s!nodepth}\donothing
% \definetextext[framed]{\framed}
%
% \startMPcode
% draw \sometxt[framed]{black} rotated 45 ;
% \stopMPcode
%
% But Mojca wanted more! Two arguments.
%
% \definetextext[framed]{\framed}
%
% \startMPcode
% draw \sometxt{This is for} rotated 45 ;
% draw \sometxt[framed][foregroundstyle=bold]{Mojca's};
% draw \sometxt[framed]{eyes only!} rotated -45 ;
% \stopMPcode
\unexpanded\def\definetextext[#1]%
{\def\currenttextext{#1}%
\doifelsenextoptionalcs\meta_textext_define_one\meta_textext_define_zero}
\def\meta_textext_define_one {\setvalue{\??graphictexarguments1:\currenttextext}}
\def\meta_textext_define_zero{\setvalue{\??graphictexarguments0:\currenttextext}}
\def\sometxt#1#{\meta_some_txt{#1}}
\def\meta_some_txt#1#2% we need to capture embedded quotes (a bit messy as later on textext is filtered
{textext.drt("\mpsometxt#1{\clf_metapostescaped{#2}}")}
\unexpanded\def\mpsometxt % no _ catcode
{\doifelsenextoptionalcs\meta_some_txt_indeed_yes\meta_some_txt_indeed_nop}
\def\meta_some_txt_indeed_yes[#1]%
{\def\currenttextext{#1}%
\csname\??graphictexarguments
\ifcsname\??graphictexarguments0:#1\endcsname0\else
\ifcsname\??graphictexarguments1:#1\endcsname1\else
?\fi\fi
\endcsname}
\def\meta_some_txt_indeed_nop
{}
\setvalue{\??graphictexarguments ?}{}
\setvalue{\??graphictexarguments 0}{\csname\??graphictexarguments\currenttextext\endcsname}
\setvalue{\??graphictexarguments 1}{\dosingleempty\meta_gx_one}
\def\meta_gx_one{\csname\??graphictexarguments1:\currenttextext\endcsname}
% \definetextext[framed][#1]#2{\framed[width=4cm]{\switchtobodyfont[#1]#2}}
% \definetextext[simple]{\framed[width=8cm]}
%
% \starttext
%
% \startMPcode
% draw \sometxt{This is for} rotated 45 ;
% draw \sometxt[framed][ss,16pt] {Mojca's};
% draw \sometxt[framed]{eyes only!} rotated -45 ;
% draw \sometxt[simple]{Quotes "indeed" work!} rotated 180 ;
% \stopMPcode
%
% \stoptext
%
% a lua one:
%
% \unexpanded\def\definetextext[#1]#2{\setvalue{@@st@@#1}{#2}}
%
% \def\sometxt #1#{\dosometxt{#1}} % grab optional [args]
% \def\dosometxt #1#2{\ctxlua{metapost.sometxt(\!!bs#1\!!es,\!!bs#2\!!es)}}
%
% \def\sometxta #1{textext.drt("#1")}
% \def\sometxtb #1#2{textext.drt("\getvalue{@@st@@#1}{#2}")}
% \def\sometxtc #1#2#3{textext.drt("\getvalue{@@st@@#1}{\switchtobodyfont[#2]#3}")}
% Best use the mp macro instead since it provides positioning.
%
% \startuseMPgraphic{testgraphic}
% draw \sometxt{\ruledhbox{\strut hans hagen}} scaled 3;
% % draw textext.drt("\ruledhbox{\strut hans hagen}") scaled 3;
% % draw textext.dlft("\ruledhbox{\strut hans hagen}") scaled 3;
% % draw textext.lft("\ruledhbox{\strut hans hagen}") scaled 3;
% draw llcorner currentpicture -- urcorner currentpicture withcolor yellow;
% draw lrcorner currentpicture -- ulcorner currentpicture withcolor yellow;
% draw boundingbox currentpicture withcolor blue ;
% draw origin withcolor red withpen pencircle scaled 1pt;
% \stopuseMPgraphic
%
% {\showstruts\useMPgraphic{testgraphic}}
\unexpanded\def\MPexponent #1#2{\mathematics{#1\times10^{#2}}}
\unexpanded\def\MPformatted #1#2{\clf_metapostformatted{#1}{#2}}
\unexpanded\def\MPgraphformat#1#2{\clf_metapostgraphformat{#1}{#2}}
%D Some new fun (but exprimental for a while):
\unexpanded\def\MPLIBoutlinetext#1#2#3% index kind text
{\begingroup
\setbox\scratchbox\hbox{#3}%
\clf_MPLIBconvertoutlinetext\numexpr#1\relax{#2}\scratchbox
\endgroup}
\protect \endinput
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