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%D \module
%D [ file=font-glf,
%D version=2020.12.21,
%D title=\CONTEXT\ Font Macros,
%D subtitle=Glyph Scaling,
%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.
\writestatus{loading}{ConTeXt Font Macros / Glyph Scaling}
\unprotect
%D Experiment:
\installcorenamespace{scaledfont}
\installcorenamespace{scaledfontxscale}
\installcorenamespace{scaledfontyscale}
\installcommandhandler \??scaledfont {scaledfont} \??scaledfont
\appendtoks
\ifempty\currentscaledfont\else
\expandafter\integerdef\csname\??scaledfontxscale\currentscaledfont\endcsname\numericscale\scaledfontparameter\c!xscale\relax
\expandafter\integerdef\csname\??scaledfontyscale\currentscaledfont\endcsname\numericscale\scaledfontparameter\c!yscale\relax
\fi
\to \everysetupscaledfont
\integerdef\bodyglyphscale\plusthousand
\appendtoks
\expandafter\integerdef\csname\??scaledfontxscale\currentscaledfont\endcsname\numericscale\scaledfontparameter\c!xscale\relax
\expandafter\integerdef\csname\??scaledfontyscale\currentscaledfont\endcsname\numericscale\scaledfontparameter\c!yscale\relax
\overloaded\frozen\protected\edefcsname\currentscaledfont\endcsname
{\glyphxscale\numexpr\csname\??scaledfontxscale\currentscaledfont\endcsname*\bodyglyphscale/\plusthousand\relax
\glyphyscale\numexpr\csname\??scaledfontyscale\currentscaledfont\endcsname*\bodyglyphscale/\plusthousand\relax
\begincsname\scaledfontparameter\c!style\endcsname}%
\to \everydefinescaledfont
\setupscaledfont
[\c!scale=\plusthousand,
\c!xscale=\scaledfontparameter\c!scale,
\c!yscale=\scaledfontparameter\c!scale]
% \installcorenamespace{scaledfontbody}
%
% \permanent\protected\def\definescaledfontbody[#1]#*[#2]% only for testing
% {%\expandafter\integerdef\csname\??scaledfontbody#1\endcsname\integerdef\bodyglyphscale\numericscale#2\relax
% \frozen\protected\defcsname#1\endcsname%
% {\integerdef\bodyglyphscale\numericscale#2\relax
% \glyphxscale\bodyglyphscale
% \glyphyscale\bodyglyphscale
% \the\everybodyfont}}
\protect \endinput
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