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Fix alignment of prescripts in mhchem to properly right-justify (won't work well in NativeMML output, but then neither do several other features)

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This commit is contained in:
Davide P. Cervone 2012-03-19 08:39:45 -04:00
parent 7c6b2c01df
commit d542c87077
3 changed files with 90 additions and 14 deletions
config
TeX-MML-AM_HTMLorMML-full.js
extensions/TeX
mhchem.js
unpacked/extensions/TeX
mhchem.js

82
config/TeX-MML-AM_HTMLorMML-full.js
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2
extensions/TeX/mhchem.js
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unpacked/extensions/TeX/mhchem.js
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@ -302,17 +302,14 @@ MathJax.Hub.Register.StartupHook("TeX Jax Ready",function () {
// right-justify super- and subscripts when they are before the atom
//
var sup = this.sup, sub = this.sub;
var n = Math.abs(sup.replace(/[^\d]/g,"").length-sub.replace(/[^\d]/g,"").length);
if (n) {
var zeros = "0000000000".substr(0,n);
var script = (sup.length > sub.length ? "sub" : "sup");
this[script] = "\\phantom{"+zeros+"}" + this[script];
}
if (sup.charAt(0) === "-" && sub.charAt(0) !== "-") {this.sub = "\\phantom{-}"+this.sub}
if (sub.charAt(0) === "-" && sup.charAt(0) !== "-") {this.sup = "\\phantom{-}"+this.sup}
if (!sup.match(/\d/)) {sup += "\\vphantom{0}"} // force common heights
if (!sub.match(/\d/)) {sub += "\\vphantom{0}"}
this.tex += "\\raise 1pt{\\scriptstyle\\begin{CEscriptstack}"+sup+"\\\\"+
sub+"\\end{CEscriptstack}}\\kern-.125em ";
} else {
if (!this.sup) {this.sup = "\\Space{0pt}{0pt}{.2em}"} // forces subscripts to align properly
this.tex += "^{"+this.sup+"}_{"+this.sub+"}";
}
if (!this.sup) {this.sup = "\\Space{0pt}{0pt}{.2em}"} // forces subscripts to align properly
this.tex += "^{"+this.sup+"}_{"+this.sub+"}";
this.sup = this.sub = "";
}
this.atom = false;
@ -388,7 +385,8 @@ MathJax.Hub.Register.StartupHook("TeX Jax Ready",function () {
// Needed for \bond for the ~ forms
//
MACROS.tripledash = ["Macro","\\raise3mu{\\tiny\\text{-}\\kern2mu\\text{-}\\kern2mu\\text{-}}"];
TEX.Definitions.environment.CEstack = ['Array',null,null,null,'r',null,"0.001em",'T',1]
TEX.Definitions.environment.CEstack = ['Array',null,null,null,'r',null,"0.001em",'T',1];
TEX.Definitions.environment.CEscriptstack = ['Array',null,null,null,'r',null,"0.2em",'S',1];
//
// Add \hyphen used in some mhchem examples