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// @license magnet:?xt=urn:btih:8e4f440f4c65981c5bf93c76d35135ba5064d8b7dn=apache-2.0.txt Apache-2.0
/* -*- Mode: Javascript; indent-tabs-mode:nil; js-indent-level: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/*************************************************************
*
* MathJax/jax/output/CommonHTML/autoload/mglyph.js
*
* Implements the CommonHTML output for <mglyph> elements.
*
* ---------------------------------------------------------------------
*
* Copyright (c) 2015-2020 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("CommonHTML Jax Ready",function () {
var VERSION = "2.7.9";
var MML = MathJax.ElementJax.mml,
CHTML = MathJax.OutputJax.CommonHTML,
LOCALE = MathJax.Localization;
MML.mglyph.Augment({
toCommonHTML: function (node,options) {
var values = this.getValues("src","width","height","valign","alt");
node = this.CHTMLcreateNode(node);
this.CHTMLhandleStyle(node);
this.CHTMLhandleScale(node);
if (values.src === "") {
var index = this.Get("index");
this.CHTMLgetVariant();
if (index && this.CHTMLvariant.style)
this.CHTMLhandleText(node,String.fromCharCode(index),this.CHTMLvariant);
} else {
var bbox = this.CHTML;
if (!bbox.img) bbox.img = MML.mglyph.GLYPH[values.src];
if (!bbox.img) {
bbox.img = MML.mglyph.GLYPH[values.src] = {img: new Image(), status: "pending"};
bbox.img.img.onload = MathJax.Callback(["CHTMLimgLoaded",this]);
bbox.img.img.onerror = MathJax.Callback(["CHTMLimgError",this]);
bbox.img.img.src = values.src;
MathJax.Hub.RestartAfter(bbox.img.img.onload);
}
if (bbox.img.status !== "OK") {
var err = MML.Error(LOCALE._(["MathML","BadMglyph"],"Bad mglyph: %1",values.src));
err.data[0].data[0].mathsize = "75%";
this.Append(err); err.toCommonHTML(node); this.data.pop();
bbox.combine(err.CHTML,0,0,1);
} else {
var img = CHTML.addElement(node,"img",{
isMathJax:true, src:values.src, alt:values.alt, title:values.alt
});
var w = values.width, h = values.height;
var W = bbox.img.img.width/CHTML.em, H = bbox.img.img.height/CHTML.em;
var WW = W, HH = H;
if (w !== "") {W = this.CHTMLlength2em(w,WW); H = (WW ? W/WW * HH : 0)}
if (h !== "") {H = this.CHTMLlength2em(h,HH); if (w === "") W = (HH ? H/HH * WW : 0)}
img.style.width = CHTML.Em(W); bbox.w = bbox.r = W;
img.style.height = CHTML.Em(H); bbox.h = bbox.t = H;
if (values.valign) {
bbox.d = bbox.b = -this.CHTMLlength2em(values.valign,HH);
img.style.verticalAlign = CHTML.Em(-bbox.d);
bbox.h -= bbox.d; bbox.t = bbox.h;
}
}
}
this.CHTMLhandleSpace(node);
this.CHTMLhandleBBox(node);
this.CHTMLhandleColor(node);
return node;
},
CHTMLimgLoaded: function (event,status) {
if (typeof(event) === "string") status = event;
this.CHTML.img.status = (status || "OK");
},
CHTMLimgError: function () {this.CHTML.img.img.onload("error")}
},{
GLYPH: {} // global list of all loaded glyphs
});
MathJax.Hub.Startup.signal.Post("CommonHTML mglyph Ready");
MathJax.Ajax.loadComplete(CHTML.autoloadDir+"/mglyph.js");
});
// @license-end
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