annotation-xml.js
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/* -*- Mode: Javascript; indent-tabs-mode:nil; js-indent-level: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/*************************************************************
*
* MathJax/jax/output/SVG/autoload/annotation-xml.js
*
* Implements the SVG output for <annotation-xml> elements.
*
* ---------------------------------------------------------------------
*
* Copyright (c) 2013-2014 The MathJax Consortium
*
* 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("SVG Jax Ready",function () {
var VERSION = "2.4.0";
var MML = MathJax.ElementJax.mml,
SVG = MathJax.OutputJax.SVG;
var BBOX = SVG.BBOX;
BBOX.FOREIGN = BBOX.Subclass({type: "foreignObject", removeable: false});
MML["annotation-xml"].Augment({
toSVG: function () {
var svg = this.SVG(); this.SVGhandleSpace(svg);
var encoding = this.Get("encoding");
for (var i = 0, m = this.data.length; i < m; i++)
{svg.Add(this.data[i].toSVG(encoding),svg.w,0)}
svg.Clean();
this.SVGhandleColor(svg);
this.SVGsaveData(svg);
return svg;
}
});
MML.xml.Augment({
toSVG: function (encoding) {
//
// Get size of xml content
//
var span = SVG.textSVG.parentNode;
SVG.mathDiv.style.width = "auto"; // Firefox returns offsetWidth = 0 without this
span.insertBefore(this.div,SVG.textSVG);
var w = this.div.offsetWidth, h = this.div.offsetHeight;
var strut = MathJax.HTML.addElement(this.div,"span",{
style:{display:"inline-block", overflow:"hidden", height:h+"px",
width:"1px", marginRight:"-1px"}
});
var d = this.div.offsetHeight - h; h -= d;
this.div.removeChild(strut);
span.removeChild(this.div); SVG.mathDiv.style.width = "";
//
// Create foreignObject element for the content
//
var scale = 1000/SVG.em;
var svg = BBOX.FOREIGN({
y:(-h)+"px", width:w+"px", height:(h+d)+"px",
transform:"scale("+scale+") matrix(1 0 0 -1 0 0)"
});
//
// Add the children to the foreignObject
//
for (var i = 0, m = this.data.length; i < m; i++)
{svg.element.appendChild(this.data[i].cloneNode(true))}
//
// Set the scale and finish up
//
svg.w = w*scale; svg.h = h*scale; svg.d = d*scale;
svg.r = svg.w; svg.l = 0;
svg.Clean();
this.SVGsaveData(svg);
return svg;
}
});
MathJax.Hub.Startup.signal.Post("SVG annotation-xml Ready");
MathJax.Ajax.loadComplete(SVG.autoloadDir+"/annotation-xml.js");
});