summaryrefslogtreecommitdiff
path: root/tex/context/base/mkiv/chem-str.mkxl
diff options
context:
space:
mode:
Diffstat (limited to 'tex/context/base/mkiv/chem-str.mkxl')
-rw-r--r--tex/context/base/mkiv/chem-str.mkxl749
1 files changed, 0 insertions, 749 deletions
diff --git a/tex/context/base/mkiv/chem-str.mkxl b/tex/context/base/mkiv/chem-str.mkxl
deleted file mode 100644
index 5274de949..000000000
--- a/tex/context/base/mkiv/chem-str.mkxl
+++ /dev/null
@@ -1,749 +0,0 @@
-%D \module
-%D [ file=chem-ini,
-%D version=2009.05.13,
-%D subtitle=Chemistry,
-%D author=Hans Hagen \& Alan Braslau,
-%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 The original \PPCHTEX\ code was written in pure \TEX\, although later we made
-%D the move from \PICTEX\ to \METAPOST\. The current implementation is a mix between
-%D \TEX\, \LUA\ and \METAPOST. Although the first objective is to get a compatible
-%D but better implementation, later versions might provide more,
-
-%D NOT YET LMTX'd
-
-\writestatus{loading}{ConTeXt Chemistry Macros / Structure}
-
-\registerctxluafile{chem-str}{}
-
-% We have a slightly different interface. This is unchanged:
-%
-% \startchemical[axis=on]
-% \chemical[SIX,ROT2,B,R6,SUB1,FIVE,ROT1,B][1]
-% \stopchemical
-%
-% Here we use chemicalformula instead, so no longer a mix:
-%
-% \startchemicalformula
-% \chemical{2H_2}{top}{bottom}
-% \chemical{PLUS}{top}{bottom}
-% \chemical{O_2}{top}{bottom}
-% \chemical{GIVES}{top}{bottom}
-% \chemical{2H_2O}{top}{bottom}
-% \stopchemicalformula
-%
-% \startchemicalformula
-% \chemical{2H_2}
-% \chemical{PLUS}
-% \chemical{O_2}
-% \chemical{GIVES}
-% \chemical{2H_2O}
-% \stopchemicalformula
-%
-% The inline variant has only one argument:
-%
-% \chemical{2H_2,PLUS,O_2,GIVES,2H_2O}
-
-\unprotect
-
-\installcorenamespace{chemical}
-\installcorenamespace{chemicalsymbol}
-\installcorenamespace{chemicalframed}
-\installcorenamespace{chemicalsize}
-
-% \installsimplecommandhandler \??chemical {chemical} \??chemical % no \define...
-\installcommandhandler \??chemical {chemical} \??chemical % no \define...
-
-\aliased\let\setupchemicals \setupchemical
-\aliased\let\definechemicals\definechemical
-
-%D We use a dedicated framed macro instead of inheriting one. This is both
-%D a historical and practical reason (like shared keys with different meaning
-%D that could clash, e.g.\ align).
-
-\defineMPinstance % not really needed as we set in lua
- [chemistry]
- [\s!format=metafun,
- %\s!extensions=\v!yes, % Should we add extensions and initializations?
- %\s!initializations=\v!yes, % Would this give EmWidth, etc.?
- \c!method=\s!double]
-
-\startMPdefinitions{chemistry}
- loadmodule "chem" ;
-\stopMPdefinitions
-
-\defineframed
- [\??chemicalframed]
- [\c!align=\v!normal,
- \c!strut=\v!no]
-
-\permanent\protected\def\setupchemicalframed
- {\setupframed[\??chemicalframed]}
-
-\permanent\protected\overloaded\def\definechemical % is global (so we don't use the commandhandler)
- {\dosingleargument\chem_define}
-
-\def\chem_define[#1]#2%
- {\startnointerference
- \edef\currentdefinedchemical{#1}%
- \enforced\let\chemical\chem_chemical_nested
- \clf_undefinechemical{#1}%
- #2% flush
- \stopnointerference}
-
-\permanent\tolerant\protected\def\chem_chemical_nested[#1]#*[#2]%
- {\clf_definechemical{\currentdefinedchemical}{#1}{\detokenize{#2}}}
-
-% chemical symbols
-
-\permanent\tolerant\protected\def\definechemicalsymbol[#1]#*[#2]%
- {\ifarguments\else\setvalue{\??chemicalsymbol#1}{#2}\fi}
-
-\permanent\protected\def\chemicalsymbol[#1]%
- {\csname\??chemicalsymbol\ifcsname\??chemicalsymbol#1\endcsname#1\else\s!unknown\fi\endcsname}
-
-\definechemicalsymbol[\s!unknown][] % \char"FFFD empty
-
-% size (small medium big)
-
-% \edef\chemicaltoplocation{t}
-% \edef\chemicalbotlocation{b}
-
-\permanent\protected\def\chemicaltext#1%
- {\mathematics
- {\usechemicalstyleandcolor\c!style\c!color
- \strut
- \ifcase\currentxfontsize\or\scriptstyle\or\scriptscriptstyle\fi
- #1}}
-
-\setvalue{\??chemicalsize\v!small }{\txx}
-\setvalue{\??chemicalsize\v!medium}{\tx}
-\setvalue{\??chemicalsize\v!big }{}
-
-\newtoks \everychemical
-\newtoks \everystructurechemical
-%newconditional\indisplaychemical
-
-\newtoks \t_chem_every_box
-\newbox \b_chem_result
-\newconditional\c_chem_some_text
-\newdimen \d_chem_width
-\newdimen \d_chem_height
-\newdimen \d_chem_depth
-
-\permanent\tolerant\protected\def\startchemical[#1]#*[#2]%
- {\ifmmode\vcenter\else\vbox\fi % vpack ?
- \bgroup
- \synchronizestrut{\chemicalparameter\c!strut}%
- \dontcomplain
- %\settrue\indisplaychemical
- \forgetall
- \ifparameter#2\or
- \ifhastok={#1}%
- \setupcurrentchemical[#1]% same as \currentchemical
- \else
- \edef\currentchemical{#1}%
- \setupcurrentchemical[#2]%
- \fi
- \orelse\ifparameter#1\or
- \ifhastok={#1}%
- \setupcurrentchemical[#1]% same as \currentchemical
- \else
- \edef\currentchemical{#1}%
- \fi
- \fi
- \the\everystructurechemical
- \setbox\b_chem_result\hpack\bgroup
- \clf_startchemical
- width {\chemicalparameter\c!width}%
- height {\chemicalparameter\c!height}%
- left {\chemicalparameter\c!left}%
- right {\chemicalparameter\c!right}%
- top {\chemicalparameter\c!top}%
- bottom {\chemicalparameter\c!bottom}%
- scale {\chemicalparameter\c!scale}%
- rotation {\chemicalparameter\c!rotation}%
- symalign {\chemicalparameter\c!symalign}%
- axis {\chemicalparameter\c!axis}% was \MPcolor{...}
- framecolor {\chemicalparameter\c!framecolor}%
- rulethickness {\number\dimexpr\chemicalparameter\c!rulethickness}%
- offset {\number\dimexpr\chemicalparameter\c!offset}%
- unit {\number\dimexpr\chemicalparameter\c!unit}%
- factor {\number\chemicalparameter\c!factor}%
- \relax
- \startnointerference}
-
-\permanent\protected\def\stopchemical
- {\stopnointerference
- \clf_stopchemical
- \egroup
- \d_chem_width \wd\b_chem_result
- \d_chem_height\ht\b_chem_result
- \d_chem_depth \dp\b_chem_result
- \the\t_chem_every_box
- \doifelsenothing{\chemicalparameter\c!frame}\chem_framed_nop\chem_framed_yes
- \egroup}
-
-\protected\def\chem_framed_yes
- {\localframedwithsettings
- [\??chemicalframed]%
- [\c!frame=\chemicalparameter\c!frame,
- \c!rulethickness=\chemicalparameter\c!rulethickness,
- \c!framecolor=\chemicalparameter\c!framecolor]%
- {\vpack{\box\b_chem_result\vss}}} % remove depth
-
-\protected\def\chem_framed_nop
- {\directlocalframed
- [\??chemicalframed]%
- {\vpack{\box\b_chem_result\vss}}} % remove depth
-
-\aliased\let\startstructurechemical\startchemical
-\aliased\let\stopstructurechemical \stopchemical
-
-\appendtoks
- \enforced\let\chemical\structurechemical
-\to\everystructurechemical
-
-\protected\def\structurechemical
- {\dotripleempty\strc_chem_indeed}
-
-\def\strc_chem_indeed
- {\ifthirdargument
- \expandafter\strc_chem_indeed_three
- \else
- \expandafter\strc_chem_indeed_two
- \fi}
-
-\def\strc_chem_indeed_three[#1][#2][#3]%
- {\writestatus\m!chemicals{hyperlinked chemicals not yet supported}% todo reference, for the moment ignored
- \clf_chemicalcomponent
- {#2}%
- {\detokenize{#3}}%
- {\the\dimexpr\chemicalparameter\c!rulethickness}% todo: scaled points
- {\chemicalparameter\c!rulecolor}%
- \relax
- \ignorespaces}
-
-\def\strc_chem_indeed_two[#1][#2]% why no [#3] here
- {\clf_chemicalcomponent
- {#1}%
- {\detokenize{#2}}%
- {\the\dimexpr\chemicalparameter\c!rulethickness}% todo: scaled points
- {\chemicalparameter\c!rulecolor}%
- \relax
- \ignorespaces}
-
-\appendtoks
- \setbox\b_chem_result\hpack{\raise\MPlly\box\b_chem_result}%
- \d_chem_width \wd\b_chem_result
- \d_chem_height\ht\b_chem_result
- \d_chem_depth \dp\b_chem_result
-\to \t_chem_every_box
-
-% kind of compatible, but text sizes instead of math sizes (i.e. tx is larger than scriptsize)
-
-\appendtoks
- \edef\m_bodyfont{\chemicalparameter\c!bodyfont}%
- \ifempty\m_bodyfont
- \switchtobodyfont[\m_bodyfont]%
- \fi
- \getvalue{\??chemicalsize\chemicalparameter\c!size}%
-% \to \everystructurechemical
-\to \everychemical
-
-\permanent\protected\def\chemicaltoptext#1{\global\settrue\c_chem_some_text\gdef\m_chem_top_text{#1}\ignorespaces}
-\permanent\protected\def\chemicalbottext#1{\global\settrue\c_chem_some_text\gdef\m_chem_bot_text{#1}\ignorespaces}
-\permanent\protected\def\chemicalmidtext#1{\global\settrue\c_chem_some_text\gdef\m_chem_mid_text{#1}\ignorespaces}
-
-\appendtoks
- \enforced\let\toptext\chemicaltoptext \glet\m_chem_top_text\empty
- \enforced\let\bottext\chemicalbottext \glet\m_chem_bot_text\empty
- \enforced\let\midtext\chemicalmidtext \glet\m_chem_mid_text\empty
- \global\setfalse\c_chem_some_text
-\to \everystructurechemical
-
-\def\chem_add_texts
- {\setbox2\hpack to \d_chem_width{\strut\hss\hbox{\strut\m_chem_mid_text}\hss}%
- \setbox4\hpack to \d_chem_width{\strut\hss\hbox{\strut\m_chem_top_text}\hss}%
- \setbox6\hpack to \d_chem_width{\strut\hss\hbox{\strut\m_chem_bot_text}\hss}%
- \setbox\b_chem_result\hpack \bgroup
- \box\b_chem_result
- \hskip-\d_chem_width
- \raise\d_chem_height\hpack{\lower\ht4\box4}%
- \hskip-\d_chem_width
- \lower.5\dimexpr\ht2-\dp2\relax\box2%
- \hskip-\d_chem_width
- \lower\d_chem_depth \hpack{\raise\dp6\box6}%
- \hss
- \egroup} % text on top of chemicals
-
-\appendtoks
- \ifconditional\c_chem_some_text
- \chem_add_texts
- \d_chem_width \wd\b_chem_result
- \d_chem_height\ht\b_chem_result
- \d_chem_depth \dp\b_chem_result
- \fi
-\to \t_chem_every_box
-
-% todo: enspace or emspace
-
-\definechemicalsymbol[space] [\enspace\quad\enspace]
-\definechemicalsymbol[plus] [\enspace+\enspace]
-\definechemicalsymbol[minus] [\enspace-\enspace]
-\definechemicalsymbol[gives] [\chem_arrow_construct\xrightarrow]
-\definechemicalsymbol[equilibrium] [\chem_arrow_construct\xrightoverleftarrow]
-\definechemicalsymbol[mesomeric] [\chem_arrow_construct\xleftrightarrow]
-\definechemicalsymbol[opencomplex] [\mathematics{\Bigg[}] % not yet ok
-\definechemicalsymbol[closecomplex][\mathematics{\Bigg]}] % not yet ok
-
-\definechemicalsymbol[SPACE] [{\chemicalsymbol[space]}]
-\definechemicalsymbol[PLUS] [{\chemicalsymbol[plus]}]
-\definechemicalsymbol[MINUS] [{\chemicalsymbol[minus]}]
-\definechemicalsymbol[GIVES] [{\chemicalsymbol[gives]}]
-\definechemicalsymbol[EQUILIBRIUM] [{\chemicalsymbol[equilibrium]}]
-\definechemicalsymbol[MESOMERIC] [{\chemicalsymbol[mesomeric]}]
-\definechemicalsymbol[OPENCOMPLEX] [{\chemicalsymbol[opencomplex]}]
-\definechemicalsymbol[CLOSECOMPLEX][{\chemicalsymbol[closecomplex]}]
-
-\def\chem_arrow_construct#1#2#3%
- {\enspace
- \mathematics{#1%
- {\strut\hbox \s!spread 2\emwidth{\hss\clf_inlinechemical{#3}\hss}}% {\strut\hbox \s!spread 2em{\hss#3\hss}}}%
- {\strut\hbox \s!spread 2\emwidth{\hss\clf_inlinechemical{#2}\hss}}}% {\strut\hbox \s!spread 2em{\hss#2\hss}}%
- \enspace}
-
-% special macros (probably needs some more work)
-
-\let\chem_box_normal_yes\hbox
-\let\chem_box_visual_yes\hbox
-\let\chem_box_visual_nop\relax
-
-\installtextracker
- {chemistry.boxes}
- {\let\chem_box_visual_yes\ruledhbox \let\chem_box_visual_nop\ruledhbox}
- {\let\chem_box_visual_yes\hbox \let\chem_box_visual_nop\relax }
-
-\def\chem_top_construct#1#2#3#4%
- {\hpack\bgroup
- \setstrut
- \setbox\scratchboxone\chem_box_visual_yes{\strut#3}%
- \setbox\scratchboxtwo\chem_box_visual_yes{\strut\molecule{#4}}%
- \setbox\scratchboxone\chem_box_normal_yes{\raise\dimexpr\dp\scratchboxone+\ht\scratchboxtwo\relax\hbox to \wd\scratchboxtwo{#1\box\scratchboxone#2}}%
- \smashbox\scratchboxone
- \box\scratchboxone
- \box\scratchboxtwo
- \egroup}
-
-\def\chem_bottom_construct#1#2#3#4%
- {\hpack\bgroup
- \setstrut
- \setbox\scratchboxone\chem_box_visual_yes{\strut#3}%
- \setbox\scratchboxtwo\chem_box_visual_yes{\strut\molecule{#4}}%
- \setbox\scratchboxone\chem_box_normal_yes{\lower\dimexpr\dp\scratchboxtwo+\ht\scratchboxone\relax\hbox to \wd\scratchboxtwo{#1\box\scratchboxone#2}}%
- \smashbox\scratchboxone
- \box\scratchboxone
- \box\scratchboxtwo
- \egroup}
-
-\permanent\protected\def\chemicalleft#1#2% redundant boxes thanks to visual
- {\hbox\bgroup % hpack ?
- \setstrut
- \llap{\chem_box_visual_nop{\strut#1}}%
- \chem_box_visual_nop{\strut#2}%
- \egroup}
-
-\permanent\protected\def\chemicalright#1#2% redundant boxes thanks to visual
- {\hbox\bgroup % hpack ?
- \setstrut
- \chem_box_visual_yes{\strut#2}%
- \rlap{\chem_box_visual_nop{\strut#1}}%
- \egroup}
-
-\permanent\protected\def\chemicaltop {\chem_top_construct \hss \hss }
-\permanent\protected\def\chemicallefttop {\chem_top_construct \relax\hss }
-\permanent\protected\def\chemicalrighttop {\chem_top_construct \hss \relax}
-\permanent\protected\def\chemicalbottom {\chem_bottom_construct\hss \hss }
-\permanent\protected\def\chemicalleftbottom {\chem_bottom_construct\relax\hss }
-\permanent\protected\def\chemicalrightbottom{\chem_bottom_construct\hss \relax}
-
-\permanent\protected\def\chemicaltopleft #1{\chemicalleft {\chemicalrighttop {#1}{}}}
-\permanent\protected\def\chemicalbottomleft #1{\chemicalleft {\chemicalrightbottom{#1}{}}}
-\permanent\protected\def\chemicaltopright #1{\chemicalright{\chemicallefttop {#1}{}}}
-\permanent\protected\def\chemicalbottomright#1{\chemicalright{\chemicalleftbottom {#1}{}}}
-
-% \protected\def\chemicalcentered #1{\hbox to \fontcharwd\font`C{\setstrut\strut\hss#1\hss}}
-% \protected\def\chemicalleftcentered #1{\hbox to \fontcharwd\font`C{\setstrut\strut #1\hss}}
-% \protected\def\chemicalrightcentered#1{\hbox to \fontcharwd\font`C{\setstrut\strut\hss#1}}
-
-% \let\chemicalsmashedmiddle\chemicalcentered
-% \let\chemicalsmashedleft \chemicalleftcentered
-% \let\chemicalsmashedright \chemicalrightcentered
-
-\permanent\protected\def\chemicalalignedtext
- {\ifmmode
- \expandafter\chem_aligned_text_math
- \else
- \expandafter\chem_aligned_text_text
- \fi}
-
-\aliased\let\chemicaltighttext\relax % maybe smaller strut
-
-\def\chem_aligned_text_text#1#2#3%
- {\dontleavehmode
- \begingroup
- \usechemicalstyleandcolor\c!style\c!color
- \chem_box_visual_yes to \fontcharwd\font`C\bgroup
- \setstrut\strut
- #1\molecule{#3}#2%
- \egroup
- \endgroup}
-
-\def\chem_aligned_text_math#1#2#3%
- {\dontleavehmode
- \begingroup
- \scratchcounter\normalmathstyle
- \usechemicalstyleandcolor\c!style\c!color
- \chem_box_visual_yes to \fontcharwd\font`C\bgroup
- \setstrut\strut
- #1\mathematics{\tf\triggermathstyle\scratchcounter\molecule{#3}}#2%
- \egroup
- \endgroup}
-
-\permanent\protected\def\chemicalcentered {\chemicalalignedtext\hss \hss }
-\permanent\protected\def\chemicalleftcentered {\chemicalalignedtext\relax\hss }
-\permanent\protected\def\chemicalrightcentered{\chemicalalignedtext\hss \relax}
-
-\aliased\let\chemicalsmashedmiddle\chemicalcentered
-\aliased\let\chemicalsmashedleft \chemicalleftcentered
-\aliased\let\chemicalsmashedright \chemicalrightcentered
-
-\permanent\protected\def\chemicaloxidation#1#2#3%
- {\chemicaltop{\txx\ifcase#2\relax0\else#1\convertnumber{I}{#2}\fi}{#3}}
-
-\permanent\protected\def\chemicaloxidationplus {\dotriplegroupempty\chemicaloxidation{\textplus }} % {} needed!
-\permanent\protected\def\chemicaloxidationminus{\dotriplegroupempty\chemicaloxidation{\textminus}} % {} needed!
-\permanent\protected\def\chemicalforeveropen {\dotriplegroupempty\chemicalleft {$\big[$}} % {} needed!
-\permanent\protected\def\chemicalforeverclose {\dotriplegroupempty\chemicalright {$\big]$}} % {} needed!
-\permanent\protected\def\chemicaloxidationone {\chemicaloxidation\relax1}
-\permanent\protected\def\chemicaloxidationtwo {\chemicaloxidation\relax2}
-\permanent\protected\def\chemicaloxidationthree{\chemicaloxidation\relax3}
-\permanent\protected\def\chemicaloxidationfour {\chemicaloxidation\relax4}
-\permanent\protected\def\chemicaloxidationfive {\chemicaloxidation\relax5}
-\permanent\protected\def\chemicaloxidationsix {\chemicaloxidation\relax6}
-\permanent\protected\def\chemicaloxidationseven{\chemicaloxidation\relax7}
-
-\permanent\protected\def\chemicalbar
- {\hpack \s!spread .5\emwidth \bgroup
- \hss
- \vrule \s!height .9\strutht \s!depth .65\strutdp \s!width .1\exheight
- \hss
- \egroup}
-
-\appendtoks
- \enforced\let |\chemicalbar % \SR{N|NH}
- \enforced\let \+\chemicaloxidationplus
- \enforced\let \-\chemicaloxidationminus
- \enforced\let \[\chemicalforeveropen
- \enforced\let \]\chemicalforeverclose
- \enforced\let \1\chemicaloxidationone
- \enforced\let \2\chemicaloxidationtwo
- \enforced\let \3\chemicaloxidationthree
- \enforced\let \4\chemicaloxidationfour
- \enforced\let \5\chemicaloxidationfive
- \enforced\let \6\chemicaloxidationsix
- \enforced\let \7\chemicaloxidationseven
- \enforced\let \X\chemicaltighttext
- \enforced\let \T\chemicaltop
- \enforced\let \B\chemicalbottom
- \enforced\let \L\chemicalleft
- \enforced\let\LC\chemicalleftcentered
- \enforced\let \R\chemicalright
- \enforced\let\RC\chemicalrightcentered
- \enforced\let\TL\chemicaltopleft
- \enforced\let\BL\chemicalbottomleft
- \enforced\let\TR\chemicaltopright
- \enforced\let\BR\chemicalbottomright
- \enforced\let\LT\chemicallefttop
- \enforced\let\LB\chemicalleftbottom
- \enforced\let\RT\chemicalrighttop
- \enforced\let\RB\chemicalrightbottom
- \enforced\let\SL\chemicalsmashedleft
- \enforced\let\SM\chemicalsmashedmiddle
- \enforced\let\SR\chemicalsmashedright
-\to \everychemical
-
-% Should these also be defined in lower case, so as to be case independent?
-
-\appendtoks
- \the\everychemical
-\to \everystructurechemical
-
-% inline
-
-\permanent\protected\def\chemical
- {\ifinformula
- \expandafter\indisplaychemical
- \else
- \expandafter\inlinechemical
- \fi}
-
-\permanent\protected\def\indisplaychemical
- {\mathstylecommand\displaychemical\inlinechemical\inlinechemical}
-
-% \permanent\protected\def\inlinechemical#1%
-% {\dontleavehmode
-% \begingroup
-% \scratchcounter\normalmathstyle
-% \usechemicalstyleandcolor\c!style\c!color
-% \hbox{\mathematics{\tf\triggermathstyle\scratchcounter\clf_inlinechemical{#1}}}%
-% \endgroup}
-
-\permanent\protected\def\displaychemical
- {\dotriplegroupempty\chem_display}
-
-\def\chem_display#1#2#3%
- {\the\everychemical
- \everychemical\emptytoks
- \quad
- \vcenter\bgroup
- \usechemicalstyleandcolor\c!style\c!color
- \ifthirdargument
- \ifsecondargument
- \halign{\aligntab\hss\alignmark\alignmark\hss\cr#2\cr\molecule{#1}\cr#3\cr}%
- \else
- \halign{\aligntab\hss\alignmark\alignmark\hss \cr\molecule{#1}\cr#2\cr}%
- \fi
- \else
- \hbox{\molecule{#1}}%
- \fi
- \egroup
- \quad}
-
-\permanent\protected\def\inlinechemical#1%
- {\dontleavehmode
- \hbox{\usechemicalstyleandcolor\c!style\c!color\clf_inlinechemical{#1}}}
-
-\permanent\protected\def\chemicalbondrule
- {\hpack{\vrule\s!height.75\exheight\s!depth-\dimexpr.75\exheight-\linewidth\relax\s!width\emwidth\relax}}
-
-\definechemicalsymbol[i:space] [\enspace\quad\enspace]
-\definechemicalsymbol[i:plus] [\enspace\mathematics{+}\enspace]
-\definechemicalsymbol[i:minus] [\enspace\mathematics{-}\enspace]
-\definechemicalsymbol[i:equals] [\enspace\mathematics{=}\enspace]
-\definechemicalsymbol[i:gives] [\enspace\mathematics{\xrightarrow{}{}}\enspace]
-\definechemicalsymbol[i:equilibrium] [\enspace\mathematics{\xrightoverleftarrow{}{}}\enspace]
-\definechemicalsymbol[i:mesomeric] [\enspace\mathematics{\xleftrightarrow{}{}}\enspace]
-\definechemicalsymbol[i:single] [\chemicalbondrule]
-\definechemicalsymbol[i:double] [\hpack{\lower.5ex\chemicalbondrule\hskip-1em\raise.5ex\chemicalbondrule}]
-\definechemicalsymbol[i:triple] [\hpack{\chemicalbondrule\hskip-1em\lower.5ex\chemicalbondrule\hskip-1em\raise.5ex\chemicalbondrule}]
-
-\permanent\protected\def\chemicalsinglebond {\chemicalsymbol[i:single]}
-\permanent\protected\def\chemicaldoublebond {\chemicalsymbol[i:double]}
-\permanent\protected\def\chemicaltriplebond {\chemicalsymbol[i:triple]}
-\permanent\protected\def\chemicalgives {\chemicalsymbol[i:gives]}
-\permanent\protected\def\chemicalmesomeric {\chemicalsymbol[i:mesomeric]}
-\permanent\protected\def\chemicalequilibrium{\chemicalsymbol[i:equilibrium]}
-\permanent\protected\def\chemicalplus {\chemicalsymbol[i:plus]}
-\permanent\protected\def\chemicalminus {\chemicalsymbol[i:minus]}
-\permanent\protected\def\chemicalequals {\chemicalsymbol[i:equals]}
-\permanent\protected\def\chemicalspace {\chemicalsymbol[i:space]}
-\permanent\protected\def\chemicalinline #1{#1}
-
-% display
-
-\newconditional\c_chem_has_top
-\newconditional\c_chem_has_bot
-
-\newtoks\t_chem_top
-\newtoks\t_chem_mid
-\newtoks\t_chem_bot
-
-\newif\ifinchemicalformula
-
-\permanent\protected\def\startchemicalformula
- {\mathortext\vcenter\vbox\bgroup
- \forgetall
- \inchemicalformulatrue
- \the\everychemical
- \everychemical\emptytoks
- \t_chem_top\emptytoks % not needed
- \t_chem_mid\emptytoks % not needed
- \t_chem_bot\emptytoks % not needed
- \enforced\let\chemical\formulachemical
- \setfalse\c_chem_has_top
- \setfalse\c_chem_has_bot}
-
-\permanent\protected\def\stopchemicalformula
- {\tabskip\emwidth\relax
- \nointerlineskip
- \ifconditional\c_chem_has_top
- \ifconditional\c_chem_has_bot
- \halign{\aligntab\hss\usechemicalstyleandcolor\c!style\c!color\alignmark\alignmark\hss\cr\the\t_chem_top\cr\the\t_chem_mid\cr\the\t_chem_bot\cr}%
- \else
- \halign{\aligntab\hss\usechemicalstyleandcolor\c!style\c!color\alignmark\alignmark\hss\cr\the\t_chem_top\cr\the\t_chem_mid\cr}%
- \fi
- \else
- \ifconditional\c_chem_has_bot
- \halign{\aligntab\hss\usechemicalstyleandcolor\c!style\c!color\alignmark\alignmark\hss\cr\the\t_chem_mid\cr\the\t_chem_bot\cr}%
- \else
- \halign{\aligntab\hss\usechemicalstyleandcolor\c!style\c!color\alignmark\alignmark\hss\cr\the\t_chem_mid\cr}%
- \fi
- \fi
- \egroup}
-
-% for the moment we have a special set
-
-\definechemicalsymbol[d:space] [\enspace\quad\enspace]
-\definechemicalsymbol[d:plus] [\enspace+\enspace]
-\definechemicalsymbol[d:minus] [\enspace-\enspace]
-\definechemicalsymbol[d:equals] [\enspace=\enspace]
-\definechemicalsymbol[d:gives] [\rightarrowfill] % \chem_arrow_construct\xrightarrow
-\definechemicalsymbol[d:equilibrium] [\rightoverleftarrowfill] % \chem_arrow_construct\xrightoverleftarrow
-\definechemicalsymbol[d:mesomeric] [\leftarrowfill] % \chem_arrow_construct\xleftrightarrow
-\definechemicalsymbol[d:single] [\chemicalbondrule]
-\definechemicalsymbol[d:double] [\hpack{\lower.5ex\chemicalbondrule\hskip-1em\raise.5ex\chemicalbondrule}]
-\definechemicalsymbol[d:triple] [\hpack{\chemicalbondrule\hskip-1em\lower.5ex\chemicalbondrule\hskip-1em\raise.5ex\chemicalbondrule}]
-\definechemicalsymbol[d:opencomplex] [\mathematics{\Bigg[}] % not yet ok
-\definechemicalsymbol[d:closecomplex][\mathematics{\Bigg]}] % not yet ok
-
-\definechemicalsymbol[d:SPACE] [{\chemicalsymbol[d:space]}]
-\definechemicalsymbol[d:PLUS] [{\chemicalsymbol[d:plus]}]
-\definechemicalsymbol[d:MINUS] [{\chemicalsymbol[d:minus]}]
-\definechemicalsymbol[d:EQUALS] [{\chemicalsymbol[d:equals]}]
-\definechemicalsymbol[d:GIVES] [{\chemicalsymbol[d:gives]}]
-\definechemicalsymbol[d:EQUILIBRIUM] [{\chemicalsymbol[d:equilibrium]}]
-\definechemicalsymbol[d:MESOMERIC] [{\chemicalsymbol[d:mesomeric]}]
-\definechemicalsymbol[d:SINGLE] [{\chemicalsymbol[d:single]}]
-\definechemicalsymbol[d:DOUBLE] [{\chemicalsymbol[d:double]}]
-\definechemicalsymbol[d:TRIPLE] [{\chemicalsymbol[d:triple]}]
-\definechemicalsymbol[d:OPENCOMPLEX] [{\chemicalsymbol[d:opencomplex]}]
-\definechemicalsymbol[d:CLOSECOMPLEX][{\chemicalsymbol[d:closecomplex]}]
-
-\permanent\protected\def\formulachemical
- {\relax\dotriplegroupempty\chem_formula}
-
-\def\chem_formula#1#2#3% we could do hboxes and measure
- {\ifthirdargument
- \doifelsenothing{#2}\chem_formula_top_nop{\chem_formula_top_yes{#2}}%
- \doifelsenothing{#3}\chem_formula_bot_nop{\chem_formula_bot_yes{#3}}%
- \else\ifsecondargument
- \chem_formula_top_nop
- \doifelsenothing{#2}\chem_formula_bot_nop{\chem_formula_bot_yes{#2}}%
- \else
- \chem_formula_top_nop
- \chem_formula_bot_nop
- \fi\fi
- \ifcsname\??chemicalsymbol d:\detokenize{#1}\endcsname
- \toksapp\t_chem_mid{\chemicalsymbol[d:#1]\aligntab}%
- \else
- \toksapp\t_chem_mid{\molecule{#1}\aligntab}%
- \fi}
-
-\def\chem_formula_mid#1%
- {\csname\??chemicalsymbol\detokenize{#1}\endcsname}
-
-\def\chem_formula_top_nop {\toksapp\t_chem_top{\aligntab}}
-\def\chem_formula_bot_nop {\toksapp\t_chem_bot{\aligntab}}
-\def\chem_formula_top_yes#1{\toksapp\t_chem_top{\chem_formula_top_indeed{#1}\aligntab}\settrue\c_chem_has_top}
-\def\chem_formula_bot_yes#1{\toksapp\t_chem_bot{\chem_formula_bot_indeed{#1}\aligntab}\settrue\c_chem_has_bot}
-
-\def\chem_formula_top_indeed#1{\strut#1}
-\def\chem_formula_bot_indeed#1{\strut#1}
-
-% Experimental: defaults might change.
-
-\definefloat
- [\v!chemical]
- [\v!chemicals]
-
-\setuplabeltext
- [\v!chemical=]
-
-\setupfloat
- [\v!chemical]
- [\c!location=\v!here,
- \c!inner=\hsize.8\textwidth\dontleavehmode, % brr
- \c!align={\v!flushleft,\v!lohi}]
-
-\setupcaption
- [\v!chemical]
- [\c!location=\v!right,
- \c!distance=\zeropoint,
- \c!width=.2\textwidth,
- \c!align=\v!flushright]
-
-% Can be used as for displayed math: \startplaceformula... to display a chemical formula
-% or a chemical structure:
-%
-% \startplacechemical
-% \startchemicalformula
-% \chemical{2H_2}
-% \chemical{PLUS}
-% \chemical{O_2}
-% \chemical{GIVES}
-% \chemical{2H_2O}
-% \stopchemicalformula
-% \stopplacechemical
-
-% gone: state option resolution offset (now frame offset) alternative
-
-\setupchemicalframed
- [\c!align=\v!normal,
- \c!strut=\v!no,
- \c!offset=\v!overlay,
- \c!frame=\v!off]
-
-\definecolor % private color
- [chemicalframecolor]
- [r=.75,g=.85,b=.95]
-
-\setupchemical
- [\c!frame=,
- \c!width=\v!fit, % or unitless number, multiplies scale*unit
- \c!height=\v!fit, % or unitless number, multiplies scale*unit
- \c!left=\v!fit, % or unitless number, multiplies scale*unit
- \c!right=\v!fit, % or unitless number, multiplies scale*unit
- \c!top=\v!fit, % or unitless number, multiplies scale*unit
- \c!bottom=\v!fit, % or unitless number, multiplies scale*unit
- \c!bodyfont=,
- \c!scale=\v!normal, % small, normal or medium, big, or unitless number (multiplies unit)
- \c!size=\v!medium,
- \c!textsize=\v!big, % how is textsize used??
- \c!axis=\v!off,
- \c!style=\rm,
- \c!rotation=0, % unitless number (interpreted as degrees)
- \c!symalign=\v!auto,
- \c!location=, % not yet used (was interaction related in mkii)
- \c!offset=.25\emwidth,
- \c!unit=\emwidth,
- \c!factor=3,
- \c!color=,
- \c!strut=\v!yes,
- \c!framecolor=chemicalframecolor,
- \c!rulethickness=0.6pt, %1.5\linewidth,
- \c!rulecolor=]
-
-%D Compatibility:
-
-\definechemical[+R] {\chemical[RR]}
-\definechemical[-R] {\chemical[LR]}
-
-\definechemical[CARBON:CB] {\chemical[NEWMANSTAGGER,C,SB]}
-\definechemical[NEWMANSTAGGER:CB] {\chemical[NEWMANSTAGGER,C,SB]}
-\definechemical[NEWMANECLIPSED:CB]{\chemical[NEWMANECLIPSED,C,SB]}
-\definechemical[CARBON:CB1] {\chemical[CARBON,C,SB,Z234,1.5MOV1,MIR0,C,SB,Z234]}
-
-\definechemical[NEWMAN] {\chemical[]}
-\definechemical[STAGGER] {\chemical[NEWMANSTAGGER]}
-\definechemical[ECLIPSE] {\chemical[NEWMANECLIPSED]}
-\definechemical[ECLIPSED] {\chemical[NEWMANECLIPSED]}
-\definechemical[SIX:FRONT] {\chemical[SIXFRONT]}
-\definechemical[FIVE:FRONT] {\chemical[FIVEFRONT]}
-
-\protect \endinput