www

commit 81a1413d19e16d03021304239bd7dcb792b30790
parent d0800c8c3cf45bc1976d6bf643d9042c4c88c198
Author: Davide Cervone <dpvc@union.edu>
Date:   Wed, 22 Sep 2010 23:43:22 +0000

Add separate (shorter) timeout for web fonts, and after first web font fails, give up on web fonts and use image fonts instead (if available)

git-svn-id: https://mathjax.svn.sourceforge.net/svnroot/mathjax/trunk@607 b8fd5906-0fad-46e2-a0d3-10d94ff285d1

Diffstat:
M
mathjax/MathJax.js
 | 
4
++--
M
mathjax/jax/output/HTML-CSS/fonts/TeX/fontdata.js
 | 
4
++--
M
mathjax/jax/output/HTML-CSS/jax.js
 | 
4
++--
M
mathjax/unpacked/MathJax.js
 | 
6
+++---
M
mathjax/unpacked/jax/output/HTML-CSS/fonts/TeX/fontdata.js
 | 
6
+++---
M
mathjax/unpacked/jax/output/HTML-CSS/jax.js
 | 
51
++++++++++++++++++++++++++++++++++++---------------

6 files changed, 48 insertions(+), 27 deletions(-)
diff --git a/mathjax/MathJax.js b/mathjax/MathJax.js
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 ]);
 
diff --git a/mathjax/unpacked/MathJax.js b/mathjax/unpacked/MathJax.js
@@ -29,7 +29,7 @@ if (document.getElementById && document.childNodes && document.createElement) {
 if (!window.MathJax) {window.MathJax= {}}
 if (!MathJax.Hub) {  // skip if already loaded
   
-MathJax.version = "1.0.3";
+MathJax.version = "1.0.4";
 
 /**********************************************************/
 
@@ -723,10 +723,10 @@ MathJax.version = "1.0.3";
       //
       //  Start the timer for the given callback checker
       //
-      start: function (AJAX,check,delay) {
+      start: function (AJAX,check,delay,timeout) {
         check = BASE.Callback(check);
         check.execute = this.execute; check.time = this.time;
-        check.STATUS = AJAX.STATUS; check.timeout = AJAX.timeout;
+        check.STATUS = AJAX.STATUS; check.timeout = timeout || AJAX.timeout;
         check.delay = check.total = 0;
         setTimeout(check,delay);
       },
diff --git a/mathjax/unpacked/jax/output/HTML-CSS/fonts/TeX/fontdata.js b/mathjax/unpacked/jax/output/HTML-CSS/fonts/TeX/fontdata.js
@@ -23,7 +23,7 @@
  */
 
 (function (HTMLCSS,MML,AJAX) {
-  var VERSION = "1.0";
+  var VERSION = "1.0.1";
   
   var MAIN   = "MathJax_Main",
       BOLD   = "MathJax_Main-bold",
@@ -406,8 +406,8 @@
   //  Handle error with reversed glyphs for \bigcap and \bigcup in version 1 of fonts
   //
   HTMLCSS.Font.oldLoadComplete = HTMLCSS.Font.loadComplete;
-  HTMLCSS.Font.loadComplete = function (font,n,status) {
-    if (n != null) {this.oldLoadComplete(font,n,status)}
+  HTMLCSS.Font.loadComplete = function (font,n,done,status) {
+    if (n != null) {this.oldLoadComplete(font,n,done,status)}
     if (font.family === SIZE1 || font.family === SIZE2) {
       if (font.version === 1) {
         HTMLCSS.FONTDATA.VARIANT["-largeOp"].remap = {0x22C2: 0x22C3, 0x22C3: 0x22C2};
diff --git a/mathjax/unpacked/jax/output/HTML-CSS/jax.js b/mathjax/unpacked/jax/output/HTML-CSS/jax.js
@@ -26,6 +26,8 @@
 (function (MML,AJAX,HUB,HTMLCSS) {
    
   var FONTTEST = MathJax.Object.Subclass({
+    timeout:  5*1000,   // timeout for loading web fonts
+
     FontInfo: {
       STIX: {family: "STIXSizeOneSym", testString: "() {} []"},
       TeX:  {family: "MathJax_Size1",  testString: "() {} []"}
@@ -126,22 +128,23 @@
     loadWebFont: function (font) {
       HUB.Startup.signal.Post("HTML-CSS Jax - Web-Font "+HTMLCSS.fontInUse+"/"+font.directory);
       var n = MathJax.Message.File("Web-Font "+HTMLCSS.fontInUse+"/"+font.directory);
-      var callback = MathJax.Callback(["loadComplete",this,font,n]);
-      AJAX.timer.start(AJAX,[this.checkWebFont,font,callback],1);
-      return callback;
-    },
-    loadComplete: function (font,n,status) {
-      if (status !== AJAX.STATUS.OK) {
-        this.loadError(font);
-        if (HUB.Browser.isFirefox && HTMLCSS.allowWebFonts) {
-          var host = document.location.protocol + "//" + document.location.hostname;
-          if (document.location.port != "") {host += ":" + document.location.port}
-          host += "/";
-          if (AJAX.fileURL(HTMLCSS.webfontDir).substr(0,host.length) !== host)
-            {this.firefoxFontError(font)}
-        }
-      }
+      var done = MathJax.Callback({}); // called when font is loaded
+      var callback = MathJax.Callback(["loadComplete",this,font,n,done]);
+      AJAX.timer.start(AJAX,[this.checkWebFont,font,callback],1,this.timeout);
+      return done;
+    },
+    loadComplete: function (font,n,done,status) {
       MathJax.Message.Clear(n);
+      if (status === AJAX.STATUS.OK) {done(); return}
+      this.loadError(font);
+      if (HUB.Browser.isFirefox && HTMLCSS.allowWebFonts) {
+        var host = document.location.protocol + "//" + document.location.hostname;
+        if (document.location.port != "") {host += ":" + document.location.port}
+        host += "/";
+        if (AJAX.fileURL(HTMLCSS.webfontDir).substr(0,host.length) !== host)
+          {this.firefoxFontError(font)}
+      }
+      HTMLCSS.loadWebFontError(font,done);
     },
     loadError: function (font) {
       MathJax.Message.Set("Can't load web font "+HTMLCSS.fontInUse+"/"+font.directory,null,2000);
@@ -1050,6 +1053,24 @@
       if (HTMLCSS.FontFaceBug) {font.family = font.name}
       HUB.RestartAfter(this.Font.loadWebFont(font));
     },
+    loadWebFontError: function (font,done) {
+      //
+      //  After the first web font fails to load, switch to image fonts, if possible
+      //  otherwise, give up on web fonts all together
+      // 
+      HUB.Startup.signal.Post("HTML-CSS Jax - disable web fonts");
+      font.isWebFont = false;
+      if (this.config.imageFont && this.config.imageFont === this.fontInUse) {
+        this.imgFonts = true;
+        HUB.Startup.signal.Post("HTML-CSS Jax - switch to image fonts");
+        HUB.Startup.signal.Post("HTML-CSS Jax - using image fonts");
+        MathJax.Message.Set("Web-Fonts not available -- using image fonts instead",null,3000);
+        AJAX.Require(this.directory+"/imageFonts.js",done);
+      } else {
+        this.allowWebFonts = false;
+        done();
+      }
+    },
 
     Element: MathJax.HTML.Element,
     addElement: MathJax.HTML.addElement,