106 lines
3.9 KiB
JavaScript
106 lines
3.9 KiB
JavaScript
/* -*- Mode: Javascript; indent-tabs-mode:nil; js-indent-level: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/*************************************************************
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*
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* MathJax/jax/output/SVG/autoload/mglyph.js
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*
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* Implements the SVG output for <mglyph> elements.
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*
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* ---------------------------------------------------------------------
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*
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* Copyright (c) 2011-2013 The MathJax Consortium
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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MathJax.Hub.Register.StartupHook("SVG Jax Ready",function () {
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var VERSION = "2.3";
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var MML = MathJax.ElementJax.mml,
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SVG = MathJax.OutputJax.SVG,
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BBOX = SVG.BBOX,
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LOCALE = MathJax.Localization;
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var XLINKNS = "http://www.w3.org/1999/xlink";
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BBOX.MGLYPH = BBOX.Subclass({
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type: "image", removeable: false,
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Init: function (img,w,h,align,mu,def) {
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if (def == null) {def = {}}
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var W = img.width*1000/SVG.em, H = img.height*1000/SVG.em, y = 0;
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if (w !== "") {W = SVG.length2em(w,mu,W)}
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if (h !== "") {H = SVG.length2em(h,mu,H)}
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if (align !== "" && align.match(/\d/)) {y = SVG.length2em(align,mu); def.y = -y}
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def.height = Math.floor(H); def.width = Math.floor(W);
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def.transform = "translate(0,"+H+") matrix(1 0 0 -1 0 0)";
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def.preserveAspectRatio = "none";
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this.SUPER(arguments).Init.call(this,def);
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this.element.setAttributeNS(XLINKNS,"href",img.src);
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this.w = this.r = W; this.h = this.H = H + y;
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this.d = this.D = -y; this.l = 0;
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}
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});
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MML.mglyph.Augment({
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toSVG: function (variant,scale) {
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this.SVGgetStyles(); var svg = this.SVG(), img, err;
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this.SVGhandleSpace(svg);
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var values = this.getValues("src","width","height","valign","alt");
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if (values.src === "") {
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values = this.getValues("index","fontfamily");
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if (values.index) {
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if (!scale) {scale = this.SVGgetScale()}
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var def = {}; if (values.fontfamily) {def["font-family"] = values.fontfamily}
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svg.Add(BBOX.TEXT(scale,String.fromCharCode(values.index),def));
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}
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} else {
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if (!this.img) {this.img = MML.mglyph.GLYPH[values.src]}
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if (!this.img) {
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this.img = MML.mglyph.GLYPH[values.src] = {img: new Image(), status: "pending"};
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img = this.img.img;
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img.onload = MathJax.Callback(["SVGimgLoaded",this]);
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img.onerror = MathJax.Callback(["SVGimgError",this]);
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img.src = values.src;
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MathJax.Hub.RestartAfter(img.onload);
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}
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if (this.img.status !== "OK") {
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err = MML.Error(
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LOCALE._(["MathML","BadMglyph"],"Bad mglyph: %1",values.src),
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{mathsize:"75%"});
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this.Append(err); svg = err.toSVG(); this.data.pop();
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} else {
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var mu = this.SVGgetMu(svg);
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svg.Add(BBOX.MGLYPH(this.img.img,values.width,values.height,values.valign,mu,
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{src:values.src, alt:values.alt, title:values.alt}));
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}
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}
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svg.Clean();
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this.SVGhandleColor(svg);
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this.SVGsaveData(svg);
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return svg;
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},
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SVGimgLoaded: function (event,status) {
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if (typeof(event) === "string") {status = event}
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this.img.status = (status || "OK")
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},
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SVGimgError: function () {this.img.img.onload("error")}
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},{
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GLYPH: {} // global list of all loaded glyphs
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});
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MathJax.Hub.Startup.signal.Post("SVG mglyph Ready");
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MathJax.Ajax.loadComplete(SVG.autoloadDir+"/mglyph.js");
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});
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