From 4ee1aa59e706822172f40119b9bf6c246cd77a24 Mon Sep 17 00:00:00 2001
From: "Davide P. Cervone" <dpvc@union.edu>
Date: Wed, 18 Mar 2015 14:43:54 -0400
Subject: [PATCH] Add support for mglyph

---
 .../jax/output/CommonHTML/autoload/mglyph.js  | 94 +++++++++++++++++++
 unpacked/jax/output/CommonHTML/jax.js         |  2 +-
 2 files changed, 95 insertions(+), 1 deletion(-)
 create mode 100644 unpacked/jax/output/CommonHTML/autoload/mglyph.js

diff --git a/unpacked/jax/output/CommonHTML/autoload/mglyph.js b/unpacked/jax/output/CommonHTML/autoload/mglyph.js
new file mode 100644
index 000000000..17c5cb643
--- /dev/null
+++ b/unpacked/jax/output/CommonHTML/autoload/mglyph.js
@@ -0,0 +1,94 @@
+/* -*- 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 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 = "2.5.0";
+  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 = MathJax.HTML.addElement(node,"img",{
+            isMathJax:true, src:values.src, alt:values.alt, title:values.alt
+          });
+          var w = bbox.img.img.width/CHTML.em, h = bbox.img.img.height/CHTML.em;
+          if (values.width !== "")  img.style.width  = CHTML.Em(CHTML.length2em(values.width,w));
+          if (values.height !== "") img.style.height = CHTML.Em(CHTML.length2em(values.height,h));
+          //
+          //  Warning:  causes page reflows
+          //
+          bbox.w = bbox.r = img.offsetWidth/CHTML.em; bbox.h = bbox.t = img.offsetHeight/CHTML.em;
+          if (values.valign) {
+            bbox.d = bbox.b = -CHTML.length2em(values.valign,bbox.h);
+            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");
+});
+
diff --git a/unpacked/jax/output/CommonHTML/jax.js b/unpacked/jax/output/CommonHTML/jax.js
index 353bb5ab5..67767bb43 100644
--- a/unpacked/jax/output/CommonHTML/jax.js
+++ b/unpacked/jax/output/CommonHTML/jax.js
@@ -2297,7 +2297,7 @@
     /********************************************************/
 
     MML.ms.Augment({toCommonHTML: MML.mbase.CHTMLautoload});
-//    MML.mglyph.Augment({toCommonHTML: MML.mbase.CHTMLautoload});
+    MML.mglyph.Augment({toCommonHTML: MML.mbase.CHTMLautoload});
 //    MML.menclose.Augment({toCommonHTML: MML.mbase.CHTMLautoload});
 //    MML.maction.Augment({toCommonHTML: MML.mbase.CHTMLautoload});
 //    MML.mmultiscripts.Augment({toCommonHTML: MML.mbase.CHTMLautoload});