From bdbbf85803b5418bff8f9f45fbdd3b4a7cada9b6 Mon Sep 17 00:00:00 2001
From: Attila-Mihaly Balazs <dify.ltd@gmail.com>
Date: Thu, 31 May 2012 15:59:34 +0300
Subject: [PATCH] Added optional MathJax support

---
 forum/settings/static.py                          |  7 ++++++-
 .../media/js.src/pagedown/Markdown-combo.js       |  1 +
 .../media/js.src/pagedown/Markdown.Editor.js      |  1 +
 forum/skins/default/media/js.src/wmd/wmd.js       |  1 +
 forum/skins/default/templates/base_content.html   | 15 +++++++++++++++
 5 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/forum/settings/static.py b/forum/settings/static.py
index 9eb5d394..c402ca46 100644
--- a/forum/settings/static.py
+++ b/forum/settings/static.py
@@ -103,4 +103,9 @@
         label = _("Custom Head"),
         help_text = _("Your custom Head elements."),
         widget=Textarea(attrs={'rows': '25'}),
-        required=False))
\ No newline at end of file
+        required=False))
+
+MATHJAX_ENABLED = Setting('MATHJAX_ENABLED', False, HEAD_SET, dict(
+    label = _("Enable LaTeX support"),
+    help_text = _("Enable LaTeX support via MathJax, by loading MathJax javascript"),
+    required=False))
diff --git a/forum/skins/default/media/js.src/pagedown/Markdown-combo.js b/forum/skins/default/media/js.src/pagedown/Markdown-combo.js
index 581d8971..aeba9228 100644
--- a/forum/skins/default/media/js.src/pagedown/Markdown-combo.js
+++ b/forum/skins/default/media/js.src/pagedown/Markdown-combo.js
@@ -2269,6 +2269,7 @@ else
             elapsedTime = currTime - prevTime;
 
             pushPreviewHtml(text);
+            if (MathJax) { MathJax.Hub.Queue(["Typeset",MathJax.Hub]); }
         };
 
         // setTimeout is already used.  Used as an event listener.
diff --git a/forum/skins/default/media/js.src/pagedown/Markdown.Editor.js b/forum/skins/default/media/js.src/pagedown/Markdown.Editor.js
index 7f775d87..8aaab4b5 100644
--- a/forum/skins/default/media/js.src/pagedown/Markdown.Editor.js
+++ b/forum/skins/default/media/js.src/pagedown/Markdown.Editor.js
@@ -829,6 +829,7 @@
             elapsedTime = currTime - prevTime;
 
             pushPreviewHtml(text);
+            if (MathJax) { MathJax.Hub.Queue(["Typeset",MathJax.Hub]); }
         };
 
         // setTimeout is already used.  Used as an event listener.
diff --git a/forum/skins/default/media/js.src/wmd/wmd.js b/forum/skins/default/media/js.src/wmd/wmd.js
index ac03ea28..ad4b2104 100644
--- a/forum/skins/default/media/js.src/wmd/wmd.js
+++ b/forum/skins/default/media/js.src/wmd/wmd.js
@@ -1919,6 +1919,7 @@ Attacklab.wmdBase = function(){
 			
 			pushPreviewHtml(text);
 			htmlOut = text;
+			if (MathJax) { MathJax.Hub.Queue(["Typeset",MathJax.Hub]); }
 		};
 		
 		// setTimeout is already used.  Used as an event listener.
diff --git a/forum/skins/default/templates/base_content.html b/forum/skins/default/templates/base_content.html
index b96f0283..de290969 100644
--- a/forum/skins/default/templates/base_content.html
+++ b/forum/skins/default/templates/base_content.html
@@ -60,6 +60,21 @@
         </script>
         <script type="text/javascript" src="{% media  "/media/js/osqa.main.js" %}"></script>
         {% include "base_onready.html" %}
+        {% if settings.MATHJAX_ENABLED %}
+        <script type="text/x-mathjax-config">
+           MathJax.Hub.Config({
+             "HTML-CSS": { preferredFont: "TeX", availableFonts: ["STIX","TeX"] },
+             tex2jax: { inlineMath: [ ["$%","$%"] ],
+                        displayMath: [ ["$$","$$"] ],
+                        processEscapes: true,
+                        ignoreClass: "tex2jax_ignore|dno"
+             },
+             TeX: { noUndefined: { attributes: { mathcolor: "red", mathbackground: "#FFEEEE", mathsize: "90%" } } },
+             messageStyle: "none"
+           });
+        </script>        
+        <script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
+        {% endif %}        
 
         {% if settings.USE_PJAX %}
         <script type="text/javascript" src="{% media  "/media/js/jquery.pjax-8df345b0e7.js" %}"></script>