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Fix a problem with \mathchoice when the contents have negative width in Firefox (needed to resolve issue #148 in Firefox)

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Davide P. Cervone 2011-10-25 14:51:43 -04:00
parent 9f80a1ebab
commit 7cb05e2e20
2 changed files with 11 additions and 1 deletions
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2
extensions/TeX/mathchoice.js
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@ -12,5 +12,5 @@
* http://www.apache.org/licenses/LICENSE-2.0
*/
MathJax.Hub.Register.StartupHook("TeX Jax Ready",function(){var c="1.1";var a=MathJax.ElementJax.mml;var d=MathJax.InputJax.TeX;var b=d.Definitions;b.macros.mathchoice="MathChoice";d.Parse.Augment({MathChoice:function(f){var i=this.ParseArg(f),e=this.ParseArg(f),g=this.ParseArg(f),h=this.ParseArg(f);this.Push(a.TeXmathchoice(i,e,g,h))}});a.TeXmathchoice=a.mbase.Subclass({type:"TeXmathchoice",choice:function(){var e=this.getValues("displaystyle","scriptlevel");if(e.scriptlevel>0){return Math.min(3,e.scriptlevel+1)}return(e.displaystyle?0:1)},setTeXclass:function(e){return this.Core().setTeXclass(e)},isSpacelike:function(){return this.Core().isSpacelike()},isEmbellished:function(){return this.Core().isEmbellished()},Core:function(){return this.data[this.choice()]},toHTML:function(e){e=this.HTMLcreateSpan(e);e.bbox=this.Core().toHTML(e).bbox;return e}});MathJax.Hub.Startup.signal.Post("TeX mathchoice Ready")});MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/mathchoice.js");
MathJax.Hub.Register.StartupHook("TeX Jax Ready",function(){var c="1.1";var a=MathJax.ElementJax.mml;var d=MathJax.InputJax.TeX;var b=d.Definitions;b.macros.mathchoice="MathChoice";d.Parse.Augment({MathChoice:function(f){var i=this.ParseArg(f),e=this.ParseArg(f),g=this.ParseArg(f),h=this.ParseArg(f);this.Push(a.TeXmathchoice(i,e,g,h))}});a.TeXmathchoice=a.mbase.Subclass({type:"TeXmathchoice",choice:function(){var e=this.getValues("displaystyle","scriptlevel");if(e.scriptlevel>0){return Math.min(3,e.scriptlevel+1)}return(e.displaystyle?0:1)},setTeXclass:function(e){return this.Core().setTeXclass(e)},isSpacelike:function(){return this.Core().isSpacelike()},isEmbellished:function(){return this.Core().isEmbellished()},Core:function(){return this.data[this.choice()]},toHTML:function(e){e=this.HTMLcreateSpan(e);e.bbox=this.Core().toHTML(e).bbox;if(e.firstChild&&e.firstChild.style.marginLeft){e.style.marginLeft=e.firstChild.style.marginLeft;e.firstChild.style.marginLeft=""}return e}});MathJax.Hub.Startup.signal.Post("TeX mathchoice Ready")});MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/mathchoice.js");

10
unpacked/extensions/TeX/mathchoice.js
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@ -56,6 +56,16 @@ MathJax.Hub.Register.StartupHook("TeX Jax Ready",function () {
toHTML: function (span) {
span = this.HTMLcreateSpan(span);
span.bbox = this.Core().toHTML(span).bbox;
// Firefox doesn't correctly handle a span with a negatively sized content,
// so move marginLeft to main span (this is a hack to get \iiiint to work).
// FIXME: This is a symptom of a more general problem with Firefox, and
// there probably needs to be a more general solution (e.g., modifying
// HTMLhandleSpace() to get the width and adjust the right margin to
// compensate for negative-width contents)
if (span.firstChild && span.firstChild.style.marginLeft) {
span.style.marginLeft = span.firstChild.style.marginLeft;
span.firstChild.style.marginLeft = "";
}
return span;
}
});