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Diffstat (limited to 'tex/context/base/mkiv/node-rul.mkiv')
| -rw-r--r-- | tex/context/base/mkiv/node-rul.mkiv | 366 |
1 files changed, 366 insertions, 0 deletions
diff --git a/tex/context/base/mkiv/node-rul.mkiv b/tex/context/base/mkiv/node-rul.mkiv new file mode 100644 index 000000000..87277337e --- /dev/null +++ b/tex/context/base/mkiv/node-rul.mkiv @@ -0,0 +1,366 @@ +%D \module +%D [ file=node-rul, +%D version=2009.11.03, % 1995.10.10, +%D title=\CONTEXT\ Core Macros, +%D subtitle=Bars, +%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. + +% todo: ex and and em traveling with attribute +% todo: this will move to typo-rul + ctxcommands + +\writestatus{loading}{ConTeXt Core Macros / Bars} + +%D \macros +%D {underbar,underbars, +%D overbar,overbars, +%D overstrike,overstrikes, +%D setupbar} +%D +%D In the rare case that we need undelined words, for instance because all font +%D alternatives are already in use, one can use \type {\underbar} and \type +%D {\overstrike} and their plural forms. +%D +%D \startbuffer +%D \underbars {drawing \underbar{bars} under words is a typewriter leftover} +%D \overstrikes {striking words makes them \overstrike {unreadable} but +%D sometimes even \overbar {top lines} come into view.} +%D \stopbuffer +%D +%D \typebuffer +%D +%D \startlines +%D \getbuffer +%D \stoplines +%D +%D The next macros are derived from the \PLAIN\ \TEX\ one, but also supports +%D nesting. The \type{$} keeps us in horizontal mode and at the same time +%D applies grouping. +%D +%D \showsetup{underbar} +%D \showsetup{underbars} +%D \showsetup{overbar} +%D \showsetup{overbars} +%D \showsetup{overstrike} +%D \showsetup{overstrikes} +%D +%D \showsetup{setupunderbar} +%D +%D Nested bars can be configured by appending \type {:<index>} to the category. +%D Normally units in combination with a unitless thickness specification but +%D there units can be used too. +%D +%D \startbuffer +%D \setupbars[unit=mm,rulethickness=1] bar\startbar[underbar]foo\stopbar bar\blank +%D \setupbars[unit=ex,rulethickness=1] bar\startbar[underbar]foo\stopbar bar\blank +%D \setupbars[unit=pt,rulethickness=1] bar\startbar[underbar]foo\stopbar bar\blank +%D \setupbars[unit=pt,rulethickness=10pt] bar\startbar[underbar]foo\stopbar bar +%D \stopbuffer +%D +%D \typebuffer \blank \getbuffer \blank +%D +%D As with many early usage of \LUA\ in \MKIV\ this mechanism explores a way +%D to deal with local settings at the \TEX\ end and remembering parameters +%D at the \LUA\ end. We might do things differently now, but as settings normally +%D don't change that often, we're not in a hurry to do that now. The problem at +%D the \LUA\ end is that we don't know when to clean up. + +\unprotect + +%definesystemattribute[ruled] +%definesystemattribute[shifted] + +\registerctxluafile{node-rul}{1.001} + +\installcorenamespace{bar} +\installcorenamespace{barindex} +\installcorenamespace{barattribute} +\installcorenamespace{barstack} + +\installcommandhandler \??bar {bar} \??bar + +\newtoks\t_node_rules_checklist + +\let\c_node_rules_index\relax % temporary synonym +\let\p_node_rules_color\empty + +\let\setupbars\setupbar + +\appendtoks + \ifsecondargument + \node_rules_define + \else + \the\t_node_rules_checklist + \fi +\to \everysetupbar + +\appendtoks + \ifcsname\??barindex\currentbar\endcsname + \lastnamedcs + \else + \expandafter\newcount\csname\??barindex\currentbar\endcsname + \fi + \normalexpanded{\t_node_rules_checklist{\node_rules_redefine{\currentbar}\the\t_node_rules_checklist}}% + \node_rules_define + \setuevalue\currentbar{\node_rules_direct{\currentbar}}% +\to \everydefinebar + +\unexpanded\def\node_rules_define + {\edef\p_node_rules_color{\barparameter\c!color}% + \setevalue{\??barattribute\currentbar}{\number + \clf_definerule + continue {\barparameter\c!continue}% + unit {\barparameter\c!unit}% + order {\barparameter\c!order}% + rulethickness {\barparameter\c!rulethickness}% + method \barparameter\c!method + ma \thecolormodelattribute + ca \thecolorattribute\p_node_rules_color + ta \thetransparencyattribute\p_node_rules_color + offset \barparameter\c!offset\space % number + dy \barparameter\c!dy\space % number + max \barparameter\c!max + \relax}} + +\unexpanded\def\node_rules_redefine#1% + {\def\currentbar{#1}\node_rules_define} + +\unexpanded\def\node_rules_direct#1% + {\groupedcommand{\node_rules_set{#1}}\relax} + +% \unexpanded\def\node_rules_set +% {\clf_enablerules % will be moved to lua +% \glet\node_rules_set\node_rules_set_indeed +% \node_rules_set} +% +%\unexpanded\def\node_rules_set_indeed#1% maybe reverse the 1000 (also maybe use more attributes instead of settings) + +\unexpanded\def\node_rules_set#1% maybe reverse the 1000 (also maybe use more attributes instead of settings) + {\edef\currentbar{#1}% + \usebarstyleandcolor\c!foregroundstyle\c!foregroundcolor + % todo: move this to lua .. we callout anyway + \expandafter\let\expandafter\c_node_rules_index\csname\??barindex#1\endcsname + \advance\c_node_rules_index\plusone + \clf_enablerules % will be relaxed + \attribute\ruledattribute\numexpr + \plusthousand*\c_node_rules_index + % optimizing this one needs testing + +\csname\??barattribute#1\ifcsname\??bar#1:\number\c_node_rules_index\s!parent\endcsname:\number\c_node_rules_index\fi\endcsname + \relax} + +\unexpanded\def\startbar[#1]% + {\begingroup + \node_rules_set{#1}} + +\unexpanded\def\stopbar + {\endgroup} + +\unexpanded\def\setbar[#1]% + {\node_rules_set{#1}} + +\let\directsetbar\node_rules_set + +% ungrouped + +\newcount\c_node_rules_nesting % todo: same as colors + +\unexpanded\def\pushbar[#1]% + {\global\advance\c_node_rules_nesting\plusone + \expandafter\edef\csname\??barstack\number\c_node_rules_nesting\endcsname{\attribute\ruledattribute\the\attribute\ruledattribute}% + \node_rules_set{#1}} + +\unexpanded\def\popbar + {\csname\??barstack\number\c_node_rules_nesting\endcsname + \global\advance\c_node_rules_nesting\minusone} + +\setupbars + [\c!method=0, % new: 0=center nested, 1=stack nested + \c!continue=\v!no, + \c!offset=0, % upwards, replaces: topoffset bottomoffset + \c!dy=0, + \c!max=3, + \c!style=, + \c!rulethickness=.1, + \c!order=\v!foreground, + \c!unit=ex, % so now we are relative + \c!color=] % replaces: rulecolor + +% \definebar[touchbar] [\c!method=0,\c!dy=-0.4,\c!offset=-0.0] +% \definebar[touchbars] [touchbar] [\c!continue=\v!yes] + +\let\normalmathoverbar \overbar +\let\normalmathunderbar \underbar +\let\normalmathoverstrike \overstrike +\let\normalmathunderstrike\understrike + +\definebar[\v!overbar] [\c!method=1,\c!dy=0.4,\c!offset=1.8,\c!continue=\v!yes] +\definebar[\v!underbar] [\c!method=1,\c!dy=-0.4,\c!offset=-0.3,\c!continue=\v!yes] +\definebar[\v!overstrike][\c!method=0,\c!dy=0.4,\c!offset=0.5,\c!continue=\v!yes] + +\definebar + [\v!understrike] + [\c!method=0, + \c!offset=1.375, + \c!rulethickness=2.5, + \c!continue=\v!yes, + \c!order=\v!background, + \c!color=lightgray] + +\definebar[\v!overbars] [\v!overbar] [\c!continue=\v!no] +\definebar[\v!underbars] [\v!underbar] [\c!continue=\v!no] +\definebar[\v!overstrikes] [\v!overstrike] [\c!continue=\v!no] +\definebar[\v!understrikes][\v!understrike][\c!continue=\v!no] + +% we want these always so ... + +\ifdefined\normalmathunderbar + \expandafter\let\expandafter\normaltextunderbar\csname\v!underbar\endcsname + \unexpanded\def\underbar{\mathortext\normalmathunderbar\normaltextunderbar} +\else + \expandafter\let\expandafter\underbar\csname\v!underbar\endcsname +\fi + +\ifdefined\normalmathoverbar + \expandafter\let\expandafter\normaltextoverbar\csname\v!overbar\endcsname + \unexpanded\def\overbar{\mathortext\normalmathoverbar\normaltextoverbar} +\else + \expandafter\let\expandafter\overbar\csname\v!overbar\endcsname +\fi + +\ifdefined\normalmathunderstrike + \expandafter\let\expandafter\normaltextunderstrike\csname\v!understrike\endcsname + \unexpanded\def\understrike{\mathortext\normalmathunderstrike\normaltextunderstrike} +\else + \expandafter\let\expandafter\understrike\csname\v!understrike\endcsname +\fi + +\ifdefined\normalmathoverstrike + \expandafter\let\expandafter\normaltextoverstrike\csname\v!overstrike\endcsname + \unexpanded\def\overstrike{\mathortext\normalmathoverstrike \normaltextoverstrike} +\else + \expandafter\let\expandafter\overstrike\csname\v!overstrike\endcsname +\fi + +\expandafter\let\expandafter\overstrikes\csname\v!overstrikes\endcsname +\expandafter\let\expandafter\underbars \csname\v!underbars \endcsname +\expandafter\let\expandafter\overbars \csname\v!overbars \endcsname + +\unexpanded\def\setupunderbar[#1]% too incompatible for the moment + {} + +%D This will move: (a bit duplicated) + +\installcorenamespace{shift} +\installcorenamespace{shiftindex} +\installcorenamespace{shiftattribute} + +\installcommandhandler \??shift {shift} \??shift + +\newtoks\t_node_shifts_checklist + +\let\c_node_shifts_index\relax % temporary synonym + +\let\setupshifts\setupshift + +\appendtoks + \ifsecondargument + \node_shifts_define + \else + \the\t_node_shifts_checklist + \fi +\to \everysetupshift + +\appendtoks + \ifcsname\??shiftindex\currentshift\endcsname + \lastnamedcs\zerocount + \else + \expandafter\newcount\csname\??shiftindex\currentshift\endcsname + \fi + \normalexpanded{\t_node_shifts_checklist{\node_shifts_redefine{\currentshift}\the\t_node_shifts_checklist}}% + \node_shifts_define + \setuevalue\currentshift{\node_shifts_direct{\currentshift}}% +\to \everydefineshift + +\unexpanded\def\node_shifts_define + {\setevalue{\??shiftattribute\currentshift}{\number + \clf_defineshift + continue {\shiftparameter\c!continue}% + unit {\shiftparameter\c!unit}% + method \shiftparameter\c!method + dy \shiftparameter\c!dy % number + \relax}} + +\unexpanded\def\node_shifts_redefine#1% + {\def\currentshift{#1}\node_shifts_define} + +% \unexpanded\def\node_shifts_set +% {\clf_enableshifts +% \glet\node_shifts_set\node_shifts_set_indeed +% \node_shifts_set} +% +% \def\node_shifts_set_indeed#1% todo: check parent ! + +\unexpanded\def\node_shifts_set#1% todo: check parent ! todo: move attr etc to lua + {\def\currentshift{#1}% + \expandafter\let\expandafter\c_node_shifts_index\csname\??shiftindex#1\endcsname + \advance\c_node_shifts_index\plusone + \attribute\shiftedattribute\numexpr + \plusthousand*\c_node_shifts_index + +\csname\??shiftattribute#1\ifcsname\??shift#1:\number\c_node_shifts_index\s!parent\endcsname:\number\c_node_shifts_index\fi\endcsname + \relax + \useshiftstyleandcolor\c!style\c!color + \dosetupisolatedalign{\shiftparameter\c!align}} + +\unexpanded\def\startshift[#1]% + {\begingroup + \node_shifts_set{#1}} + +\unexpanded\def\stopshift + {\endgroup} + +% \unexpanded\def\node_shifts_direct#1% +% {\doisolatedgroupedalign{\node_shifts_set{#1}}\donothing} + +\unexpanded\def\node_shifts_direct#1% + {\groupedcommand + {\begingroup\dostartisolation\begingroup\node_shifts_set{#1}} + {\endgroup\dostopisolation\endgroup}} + +\setupshifts + [\c!method=0, + \c!continue=\v!no, + \c!dy=0, + \c!unit=ex, + \c!align=, + \c!style=, + \c!color=] + +\defineshift [\v!shiftup] [\c!method=0,\c!dy=-1,\c!unit=ex,\c!continue=\v!yes,\c!style=\txx,\c!color=] +\defineshift [\v!shiftdown] [\c!method=1,\c!dy=.3,\c!unit=ex,\c!continue=\v!yes,\c!style=\txx,\c!color=] + +% we want these always so ... + +\expandafter\let\expandafter\shiftup \csname\v!shiftup \endcsname +\expandafter\let\expandafter\shiftdown \csname\v!shiftdown \endcsname + +% This is a weird helper: + +\unexpanded\def\dostartisolation{\signalcharacter} +\unexpanded\def\dostopisolation {\signalcharacter} +\unexpanded\def\doisolator {\signalcharacter} + +\unexpanded\def\dosetupisolatedalign#1% + {\doisolator + \setupalign[#1]\relax} + +\unexpanded\def\doisolatedgroupedalign#1#2% + {\groupedcommand + {\begingroup\dostartisolation\begingroup#1} + {#2\endgroup\dostopisolation\endgroup}} + +\protect \endinput |