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%D \module
%D [ file=font-sty,
%D version=2011.01.13, % (copied fron font-ini)
%D title=\CONTEXT\ Font Macros,
%D subtitle=features,
%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 / Features}
\unprotect
%D Feature management.
%D
%D \starttyping
%D \definefontfeature[smallcaps][smcp=yes,script=latn]
%D \definefontfeature[smallcaps][SmallCapitals=yes,script=latn]
%D \definefontfeature[smallcaps][Small Capitals=yes,script=latn]
%D \definefontfeature[smallcaps][small capitals=yes,script=latn]
%D \definefontfeature[smallcaps][smallcapitals=yes,script=latn]
%D
%D \definedfont[cambria*smallcaps] test
%D
%D \starttext
%D \definefontfeature[basekerned][default][mode=base]
%D \definefontfeature[nodekerned][default][mode=node]
%D \definefontfeature[nonekerned][default][mode=base,kern=no]
%D \setupcolors[state=start]
%D \startoverlay
%D {\vbox{\red \definedfont[Serif*nonekerned at 12pt]\input tufte }}
%D {\vbox{\blue \definedfont[Serif*basekerned at 12pt]\input tufte }}
%D {\vbox{\green\definedfont[Serif*nodekerned at 12pt]\input tufte }}
%D \stopoverlay
%D \stoptext
%D
%D \enabletrackers[otf.kerns]
%D
%D \definefontfeature[withkern][default][mode=node]
%D \definefontfeature[nokern] [default][mode=node,kern=no]
%D \definefontfeature[single] [default][mode=node,cpsp=yes]
%D \definefontfeature[simple] [default][mode=node,cpsp=yes,kern=no]
%D
%D {\definedfont[Serif*default] [FGFGFGFGFGFGFGFGFGFGFGFGFG ABCDEFGHIJKLMNOPQRSTUVWXYZ] \par}
%D {\definedfont[Serif*nokern] [FGFGFGFGFGFGFGFGFGFGFGFGFG ABCDEFGHIJKLMNOPQRSTUVWXYZ] \par}
%D {\definedfont[Serif*single] [FGFGFGFGFGFGFGFGFGFGFGFGFG ABCDEFGHIJKLMNOPQRSTUVWXYZ] \par}
%D {\definedfont[Serif*simple] [FGFGFGFGFGFGFGFGFGFGFGFGFG ABCDEFGHIJKLMNOPQRSTUVWXYZ] \par}
%D \stoptyping
% \definefontfeature[slanted] [default][slant=.25]
% \definefontfeature[stretched][default][stretch=2]
%
% \start \definedfont[SerifBold*slanted at 20pt] \ruledhbox{Test!} \stop
% \start \definedfont[SerifBold*stretched at 20pt] \ruledhbox{Test!} \stop
%
% \definefontfeature[default] [liga=yes,texligatures=yes,texquotes=yes]
% \definefontfeature[default-caps][liga=yes,texligatures=yes,texquotes=yes,smcp=yes,script=latn]
%
% \starttypescript [serif] [palatino-nova-regular] [name]
% \definefontsynonym[Serif] [palatinonova-regular][features=default]
% \definefontsynonym[SerifCaps][palatinonova-regular][features=default-caps] % also sets Serif
% \stoptypescript
%
% \starttypescript [serif] [palatino-nova-regular] [name]
% \definefontsynonym[Serif] [palatinonova-regular*default]
% \definefontsynonym[SerifCaps] [palatinonova-regular*default-caps]
% \stoptypescript
%
% \definetypeface[mainface][rm][serif][palatino-nova-regular][default] \setupbodyfont[mainface]
%
% \starttext
% ``Test'' -- --- ff fi fl \sc ``Test'' -- --- ff fi fl
% \stoptext
%
% \definefontfeature
% [default-base]
% [script=latn,language=dflt,liga=yes,kern=yes,tlig=yes,trep=yes]
% \definefontfeature
% [default-node]
% [script=latn,language=dflt,liga=yes,kern=yes,tlig=yes,trep=yes,mode=node]
% \definefontfeature
% [default-none]
% [script=latn,language=dflt,liga=yes,kern=no, tlig=yes,trep=yes]
%
% \startoverlay
% {\vtop{\color[red] {\font\test=name:lmroman12regular*default-node \test \input ward \input zapf \input linden }}}
% {\vtop{\color[green]{\font\test=name:lmroman12regular*default-base \test \input ward \input zapf \input linden }}}
% {\vtop{\color[blue] {\font\test=name:lmroman12regular*default-none \test \input ward \input zapf \input linden }}}
% \stopoverlay
%
% \blank
%
% \startoverlay
% {\vtop{\color[red] {\font\test=name:texgyrepagella*default-node \test \input ward \input zapf \input linden }}}
% {\vtop{\color[green]{\font\test=name:texgyrepagella*default-base \test \input ward \input zapf \input linden }}}
% {\vtop{\color[blue] {\font\test=name:texgyrepagella*default-none \test \input ward \input zapf \input linden }}}
% \stopoverlay
%
% \blank
%
% \startoverlay
% {\vtop{\color[red] {\font\test=name:palatinonovaregular*default-node \test \input ward \input zapf \input linden }}}
% {\vtop{\color[green]{\font\test=name:palatinonovaregular*default-base \test \input ward \input zapf \input linden }}}
% {\vtop{\color[blue] {\font\test=name:palatinonovaregular*default-none \test \input ward \input zapf \input linden }}}
% \stopoverlay
%
% \startoverlay
% {\vtop{\color[red] {\font\test=name:OfficinaSerifBookITC*default-node \test \input ward \input zapf \input linden }}}
% {\vtop{\color[green]{\font\test=name:OfficinaSerifBookITC*default-base \test \input ward \input zapf \input linden }}}
% {\vtop{\color[blue] {\font\test=name:OfficinaSerifBookITC*default-none \test \input ward \input zapf \input linden }}}
% \stopoverlay
%
% \definefontfeature[superdefault][default][compose=yes]
%
% {\font\oeps=name:lmroman10regular*default at 30pt \oeps test \char7683}
% {\font\oeps=name:lmroman10regular*superdefault at 30pt \oeps test \char7683}
\unexpanded\def\definefontfeature
{\dotripleargument\font_basics_define_font_feature}
\def\font_basics_define_font_feature[#featureset][#parent][#settings]%
{\clf_definefontfeature{#featureset}{#parent}{#settings}}
\unexpanded\def\fontfeatureslist
{\dodoubleargument\font_basics_features_list}
\def\font_basics_features_list[#name][#separator]% todo: arg voor type
{\clf_featurelist{#name}{\detokenize{#separator}}}
\attribute\zerocount\zerocount % first in list, so fast match
% beware: these are global features on top of existing font features
\let\currentfeature \s!current
\let\m_font_feature_list \s!current
\let\m_font_feature_asked\empty
\newconstant\c_font_feature_state
% hashing at this end is slower
\unexpanded\def\addfeature {\doifelsenextoptionalcs\font_feature_add_yes \font_feature_add_nop }
\unexpanded\def\subtractfeature {\doifelsenextoptionalcs\font_feature_subtract_yes \font_feature_subtract_nop }
\unexpanded\def\replacefeature {\doifelsenextoptionalcs\font_feature_replace_yes \font_feature_replace_nop }
\unexpanded\def\resetandaddfeature{\doifelsenextoptionalcs\font_feature_reset_add_yes\font_feature_reset_add_nop}
\unexpanded\def\feature {\doifelsenextoptionalcs\font_feature_yes \font_feature_nop }
\unexpanded\def\font_feature_add_yes [#feature]{\edef\m_font_feature_asked{#feature}\font_feature_add}
\unexpanded\def\font_feature_add_nop #feature{\edef\m_font_feature_asked{#feature}\font_feature_add}
\unexpanded\def\font_feature_subtract_yes [#feature]{\edef\m_font_feature_asked{#feature}\font_feature_subtract}
\unexpanded\def\font_feature_subtract_nop #feature{\edef\m_font_feature_asked{#feature}\font_feature_subtract}
\unexpanded\def\font_feature_replace_yes [#feature]{\edef\m_font_feature_asked{#feature}\font_feature_replace}
\unexpanded\def\font_feature_replace_nop #feature{\edef\m_font_feature_asked{#feature}\font_feature_replace}
\unexpanded\def\font_feature_reset_add_yes[#feature]{\edef\m_font_feature_asked{#feature}\font_feature_reset_add}
\unexpanded\def\font_feature_reset_add_nop #feature{\edef\m_font_feature_asked{#feature}\font_feature_reset_add}
\let\doaddfeature \font_feature_add_nop % low level faster ones
\let\dosubtractfeature \font_feature_subtract_nop
\let\doreplacefeature \font_feature_replace_nop
\let\doresetandaddfeature\font_feature_reset_add_nop
\unexpanded\def\font_feature_add
{\ifnum\c_font_feature_state=\plusone
\ifx\m_font_feature_asked\currentfeature\else
\font_feature_add_indeed
\fi
\else
\font_feature_add_indeed
\fi}
\unexpanded\def\font_feature_add_indeed
{\clf_addfeature{\m_font_feature_list}{\m_font_feature_asked}%
\edef\m_font_feature_list{\m_font_feature_list+\m_font_feature_asked}% also + at the lua end
\c_font_feature_state\plusone
\let\currentfeature\m_font_feature_asked}
\unexpanded\def\font_feature_subtract
{\ifnum\c_font_feature_state=\minusone
\ifx\m_font_feature_asked\currentfeature\else
\font_feature_subtract_indeed
\fi
\else
\font_feature_subtract_indeed
\fi}
\unexpanded\def\font_feature_subtract_indeed
{\clf_subtractfeature{\m_font_feature_list}{\m_font_feature_asked}%
\edef\m_font_feature_list{\m_font_feature_list-\m_font_feature_asked}% also - at the lua end
\c_font_feature_state\minusone
\let\currentfeature\m_font_feature_asked}
\unexpanded\def\font_feature_replace
{\ifnum\c_font_feature_state=\zerocount
\ifx\m_font_feature_asked\currentfeature\else
\font_feature_replace_indeed
\fi
\else
\font_feature_replace_indeed
\fi}
\unexpanded\def\font_feature_replace_indeed
{\clf_replacefeature{\m_font_feature_list}{\m_font_feature_asked}%
\edef\m_font_feature_list{\m_font_feature_list=\m_font_feature_asked}% also = at the lua end
\c_font_feature_state\zerocount
\let\currentfeature\m_font_feature_asked}
\unexpanded\def\resetfeature
{\ifx\currentfeature\s!current \else
\font_feature_reset_indeed
\fi}
\unexpanded\def\font_feature_reset_indeed
{\let\m_font_feature_asked\empty
\let\currentfeature \s!current
\let\m_font_feature_list \s!current
\clf_resetfeature}
\unexpanded\def\revivefeature
{\ifx\currentfeature\s!current \else
\font_feature_revive_indeed
\fi}
\unexpanded\def\font_feature_revive_indeed
{\clf_revivefeature{\m_font_feature_list}}
\unexpanded\def\font_feature_reset_add
{\ifnum\c_font_feature_state=\plusone
\ifx\m_font_feature_asked\currentfeature\else
\font_feature_reset_add_indeed
\fi
\else
\font_feature_reset_add_indeed
\fi}
\unexpanded\def\font_feature_reset_add_indeed
{\clf_addfeature{\s!current}{\m_font_feature_asked}%
\edef\m_font_feature_list{\s!current+\m_font_feature_asked}% also + at the lua end
\c_font_feature_state\plusone
\let\currentfeature\m_font_feature_asked}
\installcorenamespace{featureyes}
\installcorenamespace{featurenop}
%\unexpanded\def\font_feature_yes[#method]{\csname\??featureyes\ifcsname\??featureyes#method\endcsname#method\else\s!unknown\fi\endcsname}
%\unexpanded\def\font_feature_nop #method{\csname\??featurenop\ifcsname\??featurenop#method\endcsname#method\else\s!unknown\fi\endcsname}
\unexpanded\def\font_feature_yes[#method]{\begincsname\??featureyes#method\endcsname}
\unexpanded\def\font_feature_nop #method{\begincsname\??featurenop#method\endcsname}
\letvalue{\??featureyes +}\addfeature
\letvalue{\??featurenop +}\addfeature
\letvalue{\??featureyes -}\subtractfeature
\letvalue{\??featurenop -}\subtractfeature
\letvalue{\??featureyes =}\replacefeature
\letvalue{\??featurenop =}\replacefeature
\letvalue{\??featureyes !}\resetandaddfeature
\letvalue{\??featurenop !}\resetandaddfeature
\letvalue{\??featureyes >}\revivefeature
\letvalue{\??featurenop >}\revivefeature
\letvalue{\??featureyes <}\resetfeature
\letvalue{\??featurenop <}\resetfeature
\letvalue{\??featureyes\v!more }\addfeature % add set to previous set and combine with font set
\letvalue{\??featurenop\v!more }\addfeature
\letvalue{\??featureyes\v!less }\subtractfeature % subtract set from previous set and combine with font set
\letvalue{\??featurenop\v!less }\subtractfeature
\letvalue{\??featureyes\v!new }\replacefeature % replace font set
\letvalue{\??featurenop\v!new }\replacefeature
\letvalue{\??featureyes\v!reset }\resetfeature % forget sets and revert to font set
\letvalue{\??featurenop\v!reset }\resetfeature
\letvalue{\??featureyes\v!default}\revivefeature % make sure the current set is used on top of the font set
\letvalue{\??featurenop\v!default}\revivefeature
\letvalue{\??featureyes\v!old }\revivefeature
\letvalue{\??featurenop\v!old }\revivefeature
\letvalue{\??featureyes\v!local }\resetandaddfeature
\letvalue{\??featurenop\v!local }\resetandaddfeature
\letvalue{\??featureyes\s!unknown}\empty
\letvalue{\??featurenop\s!unknown}\empty
% just for old times sake:
\unexpanded\def\featureattribute#feature%
{\clf_featureattribute{#feature}}
\unexpanded\def\setfontfeature#feature%
{\edef\currentfeature{#feature}%
\let\m_font_feature_list\currentfeature
\clf_setfontfeature{\currentfeature}}
\let\resetfontfeature\resetfeature
% these are obsolete (don't use them any longer)
\let\addfontfeaturetoset \font_feature_add_nop
\let\subtractfontfeaturefromset \font_feature_subtract_nop
\let\addfontfeaturetofont \font_feature_add_nop
\let\subtractfontfeaturefromfont\font_feature_subtract_nop
\let\setff\setfontfeature
\let\addfs\addfontfeaturetoset
\let\subfs\subtractfontfeaturefromset
\let\addff\addfontfeaturetofont
\let\subff\subtractfontfeaturefromfont
%D \macros
%D {os}
%D
%D In good old \TEX, the old style numerals were often taken
%D from the math fonts. No longer.
\definefontfeature
[just-os]
[mode=node,onum=yes]
%unexpanded\def\sc{\setfontfeature{smallcaps}}
\unexpanded\def\os{\setfontfeature{just-os}}
% \doifelsecurrentfonthasfeature{smcp}{YES}{NO}
% \doifelsecurrentfonthasfeature{crap}{YES}{NO}
% \doifelsecurrentfonthasfeature{kern}{YES}{NO}
\def\doifelsecurrentfonthasfeature#feature%
{\clf_doifelsecurrentfonthasfeature{#feature}}
\let\doifcurrentfonthasfeatureelse\doifelsecurrentfonthasfeature
% new:
\clf_registerlanguagefeatures
% also new
\unexpanded\def\useaddfontfeatureparameter#namespace% faster local variant
{\edef\m_font_feature_asked{#namespace\c!features}%
\ifx\m_font_feature_asked\empty\else
\font_feature_add
\fi}
% let's put this here:
\unexpanded\def\slashedzero
{\dontleavehmode
\begingroup
%\addff{zero}
\font_feature_add_nop{zero}%
0%
\endgroup}
\protect \endinput
|
