From 5b151a3db4e65b544629091ee40508f79a8a8e5f Mon Sep 17 00:00:00 2001
From: nightwing <amirjanyan@gmail.com>
Date: Sun, 29 Dec 2013 19:59:16 +0400
Subject: [PATCH] fix scrolling speed on firefox ux

---
 lib/ace/lib/event.js | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/lib/ace/lib/event.js b/lib/ace/lib/event.js
index 4d407dfc..36250d2f 100644
--- a/lib/ace/lib/event.js
+++ b/lib/ace/lib/event.js
@@ -118,8 +118,8 @@ exports.capture = function(el, eventHandler, releaseCaptureHandler) {
 
 exports.addMouseWheelListener = function(el, callback) {
     if ("onmousewheel" in el) {
-        var factor = 8;
         exports.addListener(el, "mousewheel", function(e) {
+            var factor = 8;
             if (e.wheelDeltaX !== undefined) {
                 e.wheelX = -e.wheelDeltaX / factor;
                 e.wheelY = -e.wheelDeltaY / factor;
@@ -131,8 +131,19 @@ exports.addMouseWheelListener = function(el, callback) {
         });
     } else if ("onwheel" in el) {
         exports.addListener(el, "wheel",  function(e) {
-            e.wheelX = (e.deltaX || 0) * 5;
-            e.wheelY = (e.deltaY || 0) * 5;
+            var factor = 0.35;
+            switch (e.deltaMode) {
+                case e.DOM_DELTA_PIXEL:
+                    e.wheelX = e.deltaX * factor || 0;
+                    e.wheelY = e.deltaY * factor || 0;
+                    break;
+                case e.DOM_DELTA_LINE:
+                case e.DOM_DELTA_PAGE:
+                    e.wheelX = (e.deltaX || 0) * 5;
+                    e.wheelY = (e.deltaY || 0) * 5;
+                    break;
+            }
+            
             callback(e);
         });
     } else {