/*************************************************************

*
*  MathJax/jax/output/SVG/autoload/annotation-xml.js
*  
*  Implements the SVG output for <annotation-xml> elements.
*
*  ---------------------------------------------------------------------
*  
*  Copyright (c) 2011-2018 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 = "2.7.5";
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)"
    });

if (encoding===“SVG1.1”) {

svg = BBOX({transform:"translate(0,"+(h*scale)+") scale("+scale+") matrix(1 0 0 -1 0 0)"});
svg.removeable = false;
svg.element.appendChild(this.data[0].cloneNode(true));

} else {

//
//  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");

});