annotation-xml.js (3136B)
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/SVG/autoload/annotation-xml.js 7 * 8 * Implements the SVG output for <annotation-xml> elements. 9 * 10 * --------------------------------------------------------------------- 11 * 12 * Copyright (c) 2013-2015 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("SVG Jax Ready",function () { 28 var VERSION = "2.6.0"; 29 var MML = MathJax.ElementJax.mml, 30 SVG = MathJax.OutputJax.SVG; 31 var BBOX = SVG.BBOX; 32 33 BBOX.FOREIGN = BBOX.Subclass({type: "foreignObject", removeable: false}); 34 35 MML["annotation-xml"].Augment({ 36 toSVG: function () { 37 var svg = this.SVG(); this.SVGhandleSpace(svg); 38 var encoding = this.Get("encoding"); 39 for (var i = 0, m = this.data.length; i < m; i++) 40 {svg.Add(this.data[i].toSVG(encoding),svg.w,0)} 41 svg.Clean(); 42 this.SVGhandleColor(svg); 43 this.SVGsaveData(svg); 44 return svg; 45 } 46 }); 47 48 MML.xml.Augment({ 49 toSVG: function (encoding) { 50 // 51 // Get size of xml content 52 // 53 var span = SVG.textSVG.parentNode; 54 SVG.mathDiv.style.width = "auto"; // Firefox returns offsetWidth = 0 without this 55 span.insertBefore(this.div,SVG.textSVG); 56 var w = this.div.offsetWidth, h = this.div.offsetHeight; 57 var strut = MathJax.HTML.addElement(this.div,"span",{ 58 style:{display:"inline-block", overflow:"hidden", height:h+"px", 59 width:"1px", marginRight:"-1px"} 60 }); 61 var d = this.div.offsetHeight - h; h -= d; 62 this.div.removeChild(strut); 63 span.removeChild(this.div); SVG.mathDiv.style.width = ""; 64 // 65 // Create foreignObject element for the content 66 // 67 var scale = 1000/SVG.em; 68 var svg = BBOX.FOREIGN({ 69 y:(-h)+"px", width:w+"px", height:(h+d)+"px", 70 transform:"scale("+scale+") matrix(1 0 0 -1 0 0)" 71 }); 72 // 73 // Add the children to the foreignObject 74 // 75 for (var i = 0, m = this.data.length; i < m; i++) 76 {svg.element.appendChild(this.data[i].cloneNode(true))} 77 // 78 // Set the scale and finish up 79 // 80 svg.w = w*scale; svg.h = h*scale; svg.d = d*scale; 81 svg.r = svg.w; svg.l = 0; 82 svg.Clean(); 83 this.SVGsaveData(svg); 84 return svg; 85 } 86 }); 87 88 MathJax.Hub.Startup.signal.Post("SVG annotation-xml Ready"); 89 MathJax.Ajax.loadComplete(SVG.autoloadDir+"/annotation-xml.js"); 90 91 }); 92