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+%D \module
+%D [ file=font-run,
+%D version=1998.09.11, % (second)
+%D version=2001.02.20, % (third)
+%D title=\CONTEXT\ Font Macros,
+%D subtitle=Runtime Macros,
+%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.
+
+%D [This code is hooked into the core macros and saves some
+%D format space.]
+
+\unprotect
+
+\gdef\@@onlyenglish#1%
+ {\blank{\tttf \type {#1} is only available in the english interface}\blank}
+
+\gdef\dosetshowfonttitle#1%
+ {\tabskip\zeropoint
+ \parindent\zeropoint
+ \setlocalhsize
+ \doifelsenothing{#1}
+ {\def\title{[\the\bodyfontsize]}}
+ {\switchtobodyfont[#1]\def\title{[#1]}}
+ \doifsomething\fontclass
+ {\doifnot{[\fontclass]}\title
+ {\edef\title{[\fontclass]\space\title}}}}
+
+\gdef\showbodyfont
+ {\dosingleempty\doshowbodyfont}
+
+\gdef\doshowbodyfont[#1]%
+ {\ifinsidefloat\else\startbaselinecorrection\fi
+ \vbox
+ {\dosetshowfonttitle{#1}%
+ \def\bigstrut##1##2%
+ {\hbox{\vrule
+ \!!height##1\strutht
+ \!!depth ##2\strutdp
+ \!!width \zeropoint}}
+ \def\next##1##2##3%
+ {&&##1&&##2\tf##3&&##2\sc##3%
+ &&##2\sl##3&&##2\it##3&&##2\bf##3&&##2\bs##3&&##2\bi##3%
+ &&##2\tfx##3&&##2\tfxx##3%
+ &&##2\tfa##3&&##2\tfb##3&&##2\tfc##3&&##2\tfd##3&\cr}%
+ \halign to \localhsize
+ {\bigstrut{1.5}{2}##&\vrule##
+ \tabskip=\!!zeropoint \!!plus 1fill
+ &\hfil##\hfil&\vrule##&\hfil##\hfil&\vrule##
+ &\hfil##\hfil&\vrule##&\hfil##\hfil&\vrule##
+ &\hfil##\hfil&\vrule##&\hfil##\hfil&\vrule##
+ &\hfil##\hfil&\vrule##&\hfil##\hfil&\vrule##
+ &\hfil##\hfil&\vrule##&\hfil##\hfil&\vrule##
+ &\hfil##\hfil&\vrule##&\hfil##\hfil&\vrule##
+ &\hfil##\hfil&\vrule##&\hfil##\hfil&##\vrule
+ \tabskip=\!!zeropoint\cr
+ \noalign{\hrule}
+ &\multispan{29}{\vrule\hfil\tttf\strut\title\hfil
+ \llap{\string\mr\hbox to 1em{\hss:\hss}$\mr \languageparameter\c!text$\quad}\vrule}\cr
+ \noalign{\hrule}\next{}{\tt\string}{}
+ \noalign{\hrule}\next{\tt\string\rm}\rm{\languageparameter\c!text}
+ \noalign{\hrule}\next{\tt\string\ss}\ss{\languageparameter\c!text}
+ \noalign{\hrule}\next{\tt\string\tt}\tt{\languageparameter\c!text}
+ \noalign{\hrule}}}
+ \ifinsidefloat\else\stopbaselinecorrection\fi}
+
+\gdef\showbodyfontenvironment
+ {\dosingleempty\doshowbodyfontenvironment}
+
+\gdef\doshowbodyfontenvironment[#1]%
+ {\ifinsidefloat\else\startbaselinecorrection\fi
+ \vbox
+ {\dosetshowfonttitle{#1}%
+ \def\next##1%
+ {&&\getvalue{\bodyfontvariable{##1\s!text}}%
+ &&\getvalue{\bodyfontvariable{##1\s!script}}%
+ &&\getvalue{\bodyfontvariable{##1\s!scriptscript}}%
+ &&\getvalue{\bodyfontvariable{##1\c!x}}%
+ &&\getvalue{\bodyfontvariable{##1\c!xx}}%
+ &&\getvalue{\bodyfontvariable{##1\interfaced\v!small}}%
+ &&\getvalue{\bodyfontvariable{##1\interfaced\v!big}}%
+ &&\edef\next{\getvalue{\bodyfontvariable{##1\c!interlinespace}}}\ifx\next\empty not set\else\next\fi&\cr
+ \noalign{\hrule}}
+ \halign to \localhsize
+ {##&\vrule##\strut
+ \tabskip=\!!zeropoint \!!plus 1fill
+ &\hfil##\hfil&\vrule##&\hfil##\hfil&\vrule##&\hfil##\hfil&\vrule##
+ &\hfil##\hfil&\vrule##&\hfil##\hfil&\vrule##&\hfil##\hfil&\vrule##
+ &\hfil##\hfil&\vrule##&\hfil##\hfil&##\vrule
+ \tabskip\zeropoint\cr
+ \noalign{\hrule}
+ &\multispan{17}{\vrule\hfil\tttf\strut\title\hfil}\vrule\cr
+ \noalign{\hrule}
+ &&\tttf\tx\s!text&&\tttf\tx\s!script&&\tttf\tx\s!scriptscript
+ &&\tttf\tx\c!x&&\tttf\tx\c!xx&&\tttf\tx\v!small&&\tttf\tx\v!big
+ &&\tttf\tx\c!interlinespace&\cr
+ \noalign{\hrule}
+ \@EA\globalprocesscommalist\@EA[\bodyfontenvironmentlist]\next}}
+ \ifinsidefloat\else\stopbaselinecorrection\fi}
+
+\gdef\showfont
+ {\dodoubleempty\doshowfont}
+
+\gdef\doshowfont[#1][#2]%
+ {\bgroup
+ \boxrulewidth=.1pt
+ \setupcolors[\c!state=\v!local]%
+ \iffirstargument
+ \definefont[\s!dummy][#1]\dummy
+ \else\ifdim2.5em>.05\hsize \tx
+ \ifdim2.5em>.05\hsize \txx
+ \fi\fi\fi
+ \ifinsidefloat\else\startbaselinecorrection\fi
+ \vbox\bgroup
+ \forgetall
+ \startoverlay
+ {\vbox
+ {\tf \setstrut \dummy
+ \localcolortrue \offinterlineskip
+ \dostepwiserecurse{0}{15}{1}
+ {\let\row\recurselevel
+ \hbox
+ {\red
+ \dostepwiserecurse{0}{15}{1}
+ {\let\col\recurselevel
+ \@EA\scratchcounter\normaldblquote\hexnumber\row\hexnumber\col\relax
+ \edef\rowcol{\the\scratchcounter}%
+ \iffontchar\font\scratchcounter
+ \setbox\scratchbox\ruledhbox{\black\char\scratchcounter}%
+ \ifdim\wd\scratchbox>\zeropoint
+ \donetrue \else \donefalse
+ \fi
+ \else
+ \setbox\scratchbox\hbox{\gray\vrule\!!width1ex\!!height.5ex\!!depth.5ex}%
+ \fi
+ \startoverlay
+ {\tf\vbox to 2.5em
+ {\vss
+ \hbox to 2.5em
+ {\dummy\ifdim\interwordspace=\zeropoint
+ \setbox\scratchbox\hbox
+ {\raise.5\dp\scratchbox\hbox
+ {\lower.5\ht\scratchbox\copy\scratchbox}}%
+ \ht\scratchbox\zeropoint
+ \dp\scratchbox\zeropoint
+ \else
+ \ht\scratchbox\strutht
+ \dp\scratchbox\strutdp
+ \strut
+ \fi
+ \hss\copy\scratchbox\hss}
+ \vss}}
+ {\tf\vbox to 2.3em
+ {\ifdone
+ \hsize2.4em
+ \blue
+ \edef\theshowfontspecs
+ {\ifnum\hyphenchar\font=\rowcol hyph\else
+ \ifnum\skewchar \font=\rowcol skew\fi\fi}%
+ \tinyfont % after \edef, else wrong font analyzed
+ \doifnot\v!unknown{#2}{{\red\theshowfontspecs}}\hfill\number\rowcol
+ \vfill
+ \octnumber\rowcol\hfill\lchexnumbers\rowcol
+ \par
+ \fi}}
+ \stopoverlay}}}
+ \par}}
+ {\tf\basegrid[\c!nx=16,\c!ny=16,\c!dx=2.5,\c!dy=2.5,\c!unit=em]}
+ \stopoverlay
+ \nointerlineskip
+ \vskip2pt
+ % the \noexpand before \blank is needed for non etex
+ \edef\ascii{name: {\noexpand\black\fontname\font}}
+ \def\do##1##2{\ifx##1\undefined\else\ifx##1\empty\else##2\fi\fi}%
+ \doifelse\v!unknown{#2}
+ {\edef\theshowfontspecs
+ {name: {\noexpand\black\fontname\font}}}
+ {\edef\theshowfontspecs
+ {name: {\noexpand\black\fontname\font}\noexpand\quad
+ \do\currentencoding{encoding: {\noexpand\black\currentencoding\noexpand\quad}}%
+ \do\currentmapping {mapping: {\noexpand\black\currentmapping \noexpand\quad}}%
+ \do\fonthandling {handling: {\noexpand\black\fonthandling }}}}%
+ \tf % also sets em
+ \hbox to 40em{\blue\hfill\tinyfont\setstrut\strut\theshowfontspecs}
+ \egroup
+ \ifinsidefloat\else\stopbaselinecorrection\fi
+ \egroup}
+
+\gdef\showfontstyle
+ {\dotripleempty\doshowfontstyle}
+
+\gdef\doshowfontstyle[#1][#2][#3]%
+ {\ifthirdargument
+ \bgroup
+ \raggedright
+ \switchtobodyfont[#1]
+ \def\dodocommand##1##2%
+ {\starttextrule{\tttf #1 ##1 ##2}
+ \nobreak \getvalue{##2}%
+ \dorecurse{255}
+ {\iffontchar\font\recurselevel\relax
+ \char\recurselevel\relax\space
+ \fi}
+ \par \nobreak
+ \stoptextrule}
+ \def\docommand##1%
+ {\getvalue{##1}\processcommacommand[#3]{\dodocommand{##1}}}
+ \processcommalist[#2]\docommand
+ \egroup
+ \else\ifsecondargument
+ \showfontstyle[#1][#2][\fontalternativelist]% math is gone
+ \else
+ \showfontstyle[#1][\c!rm]\showfontstyle[#1][\c!ss]
+ \showfontstyle[#1][\c!tt]\showfontstyle[#1][\c!mm]
+ \fi\fi}
+
+\gdef\showligature#1%
+ {\hbox{\type{#1}\enspace\red\ruledhbox{\black#1}}}
+
+\gdef\showligatures[#1]%
+ {\ifx\starttabulate\undefined
+ \@@onlyenglish\showligatures
+ \else
+ \bgroup
+ \setupcolors[\c!state=\v!local]%
+ \def\show##1{\hbox{\red\ruledhbox{\black##1}}}%
+ \definefont[\s!dummy][#1]\dummy
+ \starttabulate[|*{9}{c|}]
+ \NC\type{ff}\NC\type{fi}\NC\type{fl}\NC\type{ffi}\NC\type{ffl}\NC
+ \type{``}\NC\type{''}\NC\type{--}\NC\type{---}\NC\NR
+ \NC\show{ff}\NC\show{fi}\NC\show{fl}\NC\show{ffi}\NC\show{ffl}\NC
+ \show{``}\NC\show{''}\NC\show{--}\NC\show{---}\NC\NR
+ \stoptabulate
+ \egroup
+ \fi}
+
+\gdef\showfontstrip
+ {\dosingleempty\doshowfontstrip}
+
+\gdef\doshowfontstrip[#1]%
+ {\ifx\starttabulate\undefined
+ \@@onlyenglish\showfontstrip
+ \else
+ \bgroup
+ \def\dofontstripa##1##2%
+ {\tttf\string##1}
+ \def\dofontstripb##1##2%
+ {\ruledhbox{\switchtobodyfont[#1]##1{##2}}}
+ \def\dofontstripc##1##2%
+ {\setbox\scratchbox\hbox{\switchtobodyfont[#1]##1{##2}}%
+ \tt\tfx\the\ht\scratchbox}%
+ \def\dofontstripd##1##2%
+ {\setbox\scratchbox\hbox{\switchtobodyfont[#1]##1{##2}}%
+ \tt\tfx\the\wd\scratchbox}%
+ \def\fontstrip##1##2##3%
+ {\NC##2\rm{##3}\NC
+ ##2\ss{##3}\NC
+ ##2\tt{##3}\NC
+ ##2\mathematics{##3}\NC
+ \tttf##1\NR}
+ \starttabulate[|c|c|c|c|c|]
+ \fontstrip\relax\dofontstripa\empty
+ \TB
+ \fontstrip\relax\dofontstripb{xxxx}
+ \fontstrip\relax\dofontstripb{12345}
+ \fontstrip\relax\dofontstripb{(Agw)}
+ \TB
+ \fontstrip{(x height)}\dofontstripc{x}
+ \fontstrip{(m width)}\dofontstripd{m}
+ \stoptabulate
+ \egroup
+ \fi}
+
+\ifx\databox\undefined \newbox\databox \fi
+
+\gdef\testminimalbaseline#1%
+ {\setbox\databox\ruledhbox{#1}%
+ \scratchdimen\ht\databox
+ \advance\scratchdimen\dp\databox
+ \scratchtoks{#1}%
+ \expanded
+ {\NC \ruledhbox{\the\scratchtoks}
+ \noexpand \NC ->
+ \noexpand \NC \the\scratchdimen
+ \noexpand \NC =
+ \noexpand \NC \the\ht\databox
+ \noexpand \NC +
+ \noexpand \NC \the\dp\databox
+ \noexpand \NC \ifdim\scratchdimen<\baselineskip <
+ \else\ifdim\scratchdimen=\baselineskip =
+ \else > \fi\fi
+ \noexpand \NC \the\baselineskip
+ \noexpand \NC (\ifdim\scratchdimen>\baselineskip not \fi ok)
+ \noexpand \NC \noexpand \NR }}
+
+\gdef\showminimalbaseline
+ {\ifx\starttabulate\undefined
+ \@@onlyenglish\showminimalbaseline
+ \else
+ \starttabulate[||T|T|T|T|T|T|T|T|T|]
+ \testminimalbaseline{\hbox to 1em{\hss\showstruts\strut\hss}}%
+ \testminimalbaseline{(/)}%
+ \testminimalbaseline{$\frac{1}{2}x^2_3$}
+ \stoptabulate
+ \fi}
+
+\gdef\showkerning#1%
+ {\bgroup
+ \let\MPfshowcommand\ruledhbox
+ \setMPtext\s!dummy{#1}%
+ \startMPcode draw textext(\MPstring\s!dummy);\stopMPcode
+ \egroup}
+
+\gdef\showcharratio
+ {\dowithnextboxcontent
+ {\switchtobodyfont[10pt]}%
+ {(\expanded{\withoutpt\the\nextboxht},%
+ \expanded{\withoutpt\the\nextboxdp})}%
+ \hbox}
+
+\protect \endinput
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