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annotation-xml.js (2225B)

      1 /* -*- Mode: Javascript; indent-tabs-mode:nil; js-indent-level: 2 -*- */
      2 /* vim: set ts=2 et sw=2 tw=80: */
      3 
      4 /*************************************************************
      5  *
      6  *  MathJax/jax/output/CommonHTML/autoload/annotation-xm;l.js
      7  *  
      8  *  Implements the CommonHTML output for <annotation-xml> elements.
      9  *
     10  *  ---------------------------------------------------------------------
     11  *  
     12  *  Copyright (c) 2015 The MathJax Consortium
     13  * 
     14  *  Licensed under the Apache License, Version 2.0 (the "License");
     15  *  you may not use this file except in compliance with the License.
     16  *  You may obtain a copy of the License at
     17  * 
     18  *      http://www.apache.org/licenses/LICENSE-2.0
     19  * 
     20  *  Unless required by applicable law or agreed to in writing, software
     21  *  distributed under the License is distributed on an "AS IS" BASIS,
     22  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     23  *  See the License for the specific language governing permissions and
     24  *  limitations under the License.
     25  */
     26 
     27 MathJax.Hub.Register.StartupHook("CommonHTML Jax Ready",function () {
     28   var VERSION = "2.6.0";
     29   var MML = MathJax.ElementJax.mml,
     30       CHTML = MathJax.OutputJax.CommonHTML;
     31 
     32   MML["annotation-xml"].Augment({
     33     toCommonHTML: function (node) {
     34       var encoding = this.Get("encoding");
     35       node = this.CHTMLdefaultNode(node,{childOptions:{encoding:encoding}});
     36       if (this.CHTML.rscale !== 1) this.CHTML.rescale(1/this.CHTML.rscale);
     37       return node;
     38     }
     39   });
     40   
     41   MML.xml.Augment({
     42     toCommonHTML: function (node,options) {
     43       var bbox = this.CHTML = CHTML.BBOX.zero();
     44       for (var i = 0, m = this.data.length; i < m; i++) 
     45         {node.appendChild(this.data[i].cloneNode(true))}
     46       //
     47       //  Warning: causes reflow
     48       //
     49       var w = node.offsetWidth, h = node.offsetHeight;
     50       var strut = CHTML.addElement(node,"mjx-hd-test",{style:{height:h+"px"}});
     51       bbox.d = bbox.b = (node.offsetHeight - h)/CHTML.em;
     52       bbox.w = bbox.r = w/CHTML.em; bbox.h = bbox.t = h/CHTML.em - bbox.d;
     53       node.removeChild(strut);
     54     }
     55   });
     56   
     57   MathJax.Hub.Startup.signal.Post("CommonHTML annotation-xml Ready");
     58   MathJax.Ajax.loadComplete(CHTML.autoloadDir+"/annotation-xml.js");
     59 });
     60