PEG-Wiki/javascript/MathJax/extensions/TeX/autobold.js

44 lines
1.6 KiB
JavaScript

/*************************************************************
*
* MathJax/extensions/TeX/autobold.js
*
* Adds \boldsymbol around mathematics that appears in a section
* of an HTML page that is in bold.
*
* Copyright (c) 2009 Design Science, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
MathJax.Hub.Register.StartupHook("TeX Jax Ready",function () {
var TEX = MathJax.InputJax.TeX;
var oldPrefilter = TEX.prefilterMath;
TEX.prefilterMath = function (math,displaystyle,script) {
var span = script.parentNode.insertBefore(document.createElement("span"),script);
span.visibility = "hidden";
span.style.fontFamily = "Times, serif";
span.appendChild(document.createTextNode("ABCXYZabcxyz"));
var W = span.offsetWidth;
span.style.fontWeight = "bold";
if (span.offsetWidth == W) {math = "\\bf {"+math+"}"}
span.parentNode.removeChild(span);
return oldPrefilter.call(TEX,math,displaystyle,script);
};
MathJax.Hub.Startup.signal.Post("TeX autobold Ready");
});
MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/autobold.js");