https://zybuluo.com/static/MathJax/extensions/TeX/mathchoice.js

1/*
2 *  /MathJax/extensions/TeX/mathchoice.js
3 *  
4 *  Copyright (c) 2009-2013 The MathJax Consortium
5 *
6 *  Part of the MathJax library.
7 *  See http://www.mathjax.org for details.
8 * 
9 *  Licensed under the Apache License, Version 2.0;
10 *  you may not use this file except in compliance with the License.
11 *
12 *      http://www.apache.org/licenses/LICENSE-2.0
13 */
14
15MathJax.Hub.Register.StartupHook("TeX Jax Ready",function(){var c="2.2";var a=MathJax.ElementJax.mml;var d=MathJax.InputJax.TeX;var b=d.Definitions;b.Add({macros:{mathchoice:"MathChoice"}},null,true);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",notParent:true,choice:function(){if(this.selection==null){this.selection=0;var e=this.getValues("displaystyle","scriptlevel");if(e.scriptlevel>0){this.selection=Math.min(3,e.scriptlevel+1)}else{this.selection=(e.displaystyle?0:1)}}return this.selection},selected:function(){return this.data[this.choice()]},setTeXclass:function(e){return this.selected().setTeXclass(e)},isSpacelike:function(){return this.selected().isSpacelike()},isEmbellished:function(){return this.selected().isEmbellished()},Core:function(){return this.selected()},CoreMO:function(){return this.selected().CoreMO()},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},toSVG:function(){return this.Core().toSVG()}});MathJax.Hub.Startup.signal.Post("TeX mathchoice Ready")});MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/mathchoice.js");
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