Release 0.5.2.

1. Hide suppressed scrollbar rails.

Gruntfile.js

@@ -21,11 +21,7 @@ module.exports = function (grunt) {
       },
       min: {
         files: {
-          'min/perfect-scrollbar-<%= version %>.min.js': ['src/perfect-scrollbar.js'],
-          'min/perfect-scrollbar-<%= version %>.with-mousewheel.min.js': [
-            'src/perfect-scrollbar.js',
-            'src/jquery.mousewheel.js'
-          ]
+          'min/perfect-scrollbar.min.js': ['src/perfect-scrollbar.js']
         }
       }
     },
@@ -61,7 +57,7 @@ module.exports = function (grunt) {
         cwd: 'src/',
         src: ['perfect-scrollbar.css'],
         dest: 'min/',
-        ext: '-<%= version %>.min.css'
+        ext: '.min.css'
       }
     }
   });

README.md

@@ -1,4 +1,4 @@
-perfect-scrollbar
+perfect-scrollbar [![Travis CI](https://travis-ci.org/noraesae/perfect-scrollbar.svg?branch=master)](https://travis-ci.org/noraesae/perfect-scrollbar)
 =================
 
 Tiny but perfect jQuery scrollbar plugin
@@ -67,7 +67,7 @@ To make this plugin *perfect*, some requirements were not avoidable. But they're
 The requirement below is for perfect-scrollbar <= 0.3.4
 
 * there must be the *one* content element(like div) for the container.
- 
+
 Optional parameters
 -------------------
 
@@ -75,16 +75,22 @@ perfect-scrollbar supports optional parameters.
 
 ### wheelSpeed
 The scroll speed applied to mousewheel event.  
-**Default: 10**
+**Default: 1**
 
 ### wheelPropagation
 If this option is true, when the scroll reach the end of the side, mousewheel event will be propagated to parent element.  
+*Currently not supported for touch events*  
 **Default: false**
 
+
 ### minScrollbarLength
 When set to an integer value, the thumb part of the scrollbar will not shrink below that number of pixels.  
 **Default: null**
 
+### maxScrollbarLength
+When set to an integer value, the thumb part of the scrollbar will not expand over that number of pixels.  
+**Default: null**
+
 ### useBothWheelAxes
 When set to true, and only one (vertical or horizontal) scrollbar is visible then both vertical and horizontal scrolling will affect the scrollbar.  
 **Default: false**
@@ -118,7 +124,11 @@ How to Use
 
 ```html
 <style>
-  #Demo { position: 'relative'; }
+  #Demo { 
+    position: 'relative';
+    height: 100%; // Or whatever you want (eg. 400px)
+    overflow: hidden;
+  }
 </style>
 <div id='Demo'>
   <div>
@@ -157,13 +167,6 @@ $("#Demo").perfectScrollbar('update');
 
 Also you can get the informations about how to use the plugin from example codes in the `examples` directory of the source tree.
 
-Very helpful friends
---------------------
-
-perfect-scrollbar supports [jquery-mousewheel](https://github.com/brandonaaron/jquery-mousewheel). If you want to use mousewheel features, please include jquery-mousewheel before using perfect-scrollbar.
-
-If you want to make this plugin's update function more responsive, [jquery-resize](https://github.com/cowboy/jquery-resize) can be helpful.
-
 Contribution
 ------------
 
@@ -197,7 +200,7 @@ If you have any idea to improve this project or any problem using this, please f
 License
 -------
 
-The MIT License (MIT) Copyright (c) 2012, 2014 Hyeonje Alex Jun and other contributors.
+The MIT License (MIT) Copyright (c) 2012, 2014 Hyunje Alex Jun and other contributors.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 

bower.json

@@ -1,15 +1,14 @@
 {
   "name": "perfect-scrollbar",
-  "version": "0.4.10",
+  "version": "0.5.2",
   "homepage": "http://noraesae.github.io/perfect-scrollbar/",
   "authors": [
-    "Hyeonje Alex Jun <noraesae@yuiazu.net>"
+    "Hyunje Alex Jun <me@noraesae.net>"
   ],
   "description": "Tiny but perfect jQuery scrollbar plugin",
   "main": [
-    "min/perfect-scrollbar-0.4.10.min.css",
-    "min/perfect-scrollbar-0.4.10.min.js",
-    "min/perfect-scrollbar-0.4.10.with-mousewheel.min.js"
+    "src/perfect-scrollbar.css",
+    "src/perfect-scrollbar.js"
   ],
   "license": "MIT",
   "ignore": [
@@ -20,6 +19,6 @@
     "tests"
   ],
   "dependencies": {
-    "jquery": "2.x"
+    "jquery": ">=1.10"
   }
 }

examples/options-default.html

@@ -5,7 +5,6 @@
     <title>perfect-scrollbar example</title>
       <link href="../src/perfect-scrollbar.css" rel="stylesheet">
       <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
-      <script src="../src/jquery.mousewheel.js"></script>
       <script src="../src/perfect-scrollbar.js"></script>
       <style>
         .contentHolder { position:relative; margin:0px auto; padding:0px; width: 600px; height: 400px; overflow: hidden; }
@@ -17,6 +16,11 @@
         "use strict";
         $('#Default').perfectScrollbar();
       });
+      var updateSize = function () {
+        var width = parseInt($('#width').val(), 10);
+        var height = parseInt($('#height').val(), 10);
+        $('#Default').width(width).height(height).perfectScrollbar('update');
+      };
     </script>
   </head>
   <body>
@@ -24,6 +28,11 @@
       <div class="content">
       </div>
     </div>
+    <p style='text-align: center'>
+      Width <input type='text' id='width' value='600'>
+      Height <input type='text' id='height' value='400'>
+      <button onclick='updateSize()'>Change!</button>
+    </p>
   </body>
 </html>
 

examples/options-minScrollbarLength.html

@@ -5,7 +5,6 @@
     <title>perfect-scrollbar example</title>
         <link href="../src/perfect-scrollbar.css" rel="stylesheet">
         <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
-        <script src="../src/jquery.mousewheel.js"></script>
         <script src="../src/perfect-scrollbar.js"></script>
         <style>
           .contentHolder { position:relative; margin:0px auto; padding:0px; width: 640px; height: 360px; overflow: hidden; }

examples/options-suppressScrollAxis.html

@@ -5,7 +5,6 @@
     <title>perfect-scrollbar example</title>
       <link href="../src/perfect-scrollbar.css" rel="stylesheet">
       <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
-      <script src="../src/jquery.mousewheel.js"></script>
       <script src="../src/perfect-scrollbar.js"></script>
       <style>
         .contentHolder { position:relative; margin:0px auto; padding:0px; width: 600px; height: 400px; overflow: hidden; }

examples/options-useBothWheelAxes.html

@@ -5,7 +5,6 @@
     <title>perfect-scrollbar example</title>
         <link href="../src/perfect-scrollbar.css" rel="stylesheet">
         <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
-        <script src="../src/jquery.mousewheel.js"></script>
         <script src="../src/perfect-scrollbar.js"></script>
         <style>
           .contentHolder { position:relative; margin:0px auto; padding:0px; width: 640px; height: 360px; overflow: hidden; }

examples/options-wheelPropagation.html

@@ -5,7 +5,6 @@
     <title>perfect-scrollbar example</title>
       <link href="../src/perfect-scrollbar.css" rel="stylesheet">
       <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
-      <script src="../src/jquery.mousewheel.js"></script>
       <script src="../src/perfect-scrollbar.js"></script>
       <style>
         .contentHolder { position:relative; margin:0px auto; padding:0px; width: 600px; height: 400px; overflow: hidden; }

examples/options-wheelSpeed.html

@@ -5,7 +5,6 @@
     <title>perfect-scrollbar example</title>
       <link href="../src/perfect-scrollbar.css" rel="stylesheet">
       <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
-      <script src="../src/jquery.mousewheel.js"></script>
       <script src="../src/perfect-scrollbar.js"></script>
       <style>
         .contentHolder { position:relative; margin:0px auto; padding:0px; width: 600px; height: 400px; overflow: hidden; }
@@ -16,23 +15,23 @@
       jQuery(document).ready(function ($) {
         "use strict";
         $('#Default').perfectScrollbar();
-        $('#FastWheelSpeed').perfectScrollbar({wheelSpeed:100});
-        $('#SlowWheelSpeed').perfectScrollbar({wheelSpeed:1});
+        $('#FastWheelSpeed').perfectScrollbar({wheelSpeed:10});
+        $('#SlowWheelSpeed').perfectScrollbar({wheelSpeed:0.1});
       });
     </script>
   </head>
   <body>
-    <h1 style="text-align:center">Default; wheelSpeed:10</h1>
+    <h1 style="text-align:center">Default; wheelSpeed:1</h1>
     <div id="Default" class="contentHolder">
       <div class="content">
       </div>
     </div>
-    <h1 style="text-align:center">Fast: wheelSpeed:100</h1>
+    <h1 style="text-align:center">Fast: wheelSpeed:10</h1>
     <div id="FastWheelSpeed" class="contentHolder">
       <div class="content">
       </div>
     </div>
-    <h1 style="text-align:center">Slow: wheelSpeed:1</h1>
+    <h1 style="text-align:center">Slow: wheelSpeed:0.1</h1>
     <div id="SlowWheelSpeed" class="contentHolder">
       <div class="content">
       </div>

examples/reach-the-end-callback.html

@@ -6,7 +6,6 @@
     <title>perfect-scrollbar example</title>
     <link href="../src/perfect-scrollbar.css" rel="stylesheet">
     <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
-    <script src="../src/jquery.mousewheel.js"></script>
     <script src="../src/perfect-scrollbar.js"></script>
     <style>
       #description {

examples/rtl.html

@@ -5,7 +5,6 @@
     <title>perfect-scrollbar example</title>
       <link href="../src/perfect-scrollbar.css" rel="stylesheet">
       <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
-      <script src="../src/jquery.mousewheel.js"></script>
       <script src="../src/perfect-scrollbar.js"></script>
       <style>
         .contentHolder { position:relative; margin:0px auto; padding:0px; width: 600px; height: 400px; overflow: hidden; }

examples/scrollbars-on-the-opposite-side.html

@@ -5,7 +5,6 @@
     <title>perfect-scrollbar example</title>
       <link href="../src/perfect-scrollbar.css" rel="stylesheet">
       <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
-      <script src="../src/jquery.mousewheel.js"></script>
       <script src="../src/perfect-scrollbar.js"></script>
       <style>
         .contentHolder { position:relative; margin:0px auto; padding:0px; width: 600px; height: 400px; overflow: hidden; }

examples/text-content.html

@@ -6,7 +6,6 @@
     <title>perfect-scrollbar example</title>
     <link href="../src/perfect-scrollbar.css" rel="stylesheet">
     <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
-    <script src="../src/jquery.mousewheel.js"></script>
     <script src="../src/perfect-scrollbar.js"></script>
     <style>
       #description {
@@ -19,10 +18,7 @@
     </style>
     <script type="text/javascript">
       $(document).ready(function ($) {
-        $('#description').perfectScrollbar({
-          wheelSpeed: 20,
-          wheelPropagation: false
-        });
+        $('#description').perfectScrollbar();
       });
     </script>
   </head>

min/perfect-scrollbar.min.css

@@ -1,5 +1,5 @@
-/*! perfect-scrollbar - v0.4.10
+/*! perfect-scrollbar - v0.5.2
 * http://noraesae.github.com/perfect-scrollbar/
-* Copyright (c) 2014 Hyeonje Alex Jun; Licensed MIT */
+* Copyright (c) 2014 Hyunje Alex Jun; Licensed MIT */
 
 .ps-container .ps-scrollbar-x-rail{position:absolute;bottom:3px;height:8px;-webkit-border-radius:4px;-moz-border-radius:4px;border-radius:4px;opacity:0;filter:alpha(opacity=0);-o-transition:background-color .2s linear,opacity .2s linear;-webkit-transition:background-color .2s linear,opacity .2s linear;-moz-transition:background-color .2s linear,opacity .2s linear;transition:background-color .2s linear,opacity .2s linear}.ps-container:hover .ps-scrollbar-x-rail,.ps-container.hover .ps-scrollbar-x-rail{opacity:.6;filter:alpha(opacity=60)}.ps-container .ps-scrollbar-x-rail:hover,.ps-container .ps-scrollbar-x-rail.hover{background-color:#eee;opacity:.9;filter:alpha(opacity=90)}.ps-container .ps-scrollbar-x-rail.in-scrolling{background-color:#eee;opacity:.9;filter:alpha(opacity=90)}.ps-container .ps-scrollbar-y-rail{position:absolute;right:3px;width:8px;-webkit-border-radius:4px;-moz-border-radius:4px;border-radius:4px;opacity:0;filter:alpha(opacity=0);-o-transition:background-color .2s linear,opacity .2s linear;-webkit-transition:background-color .2s linear,opacity .2s linear;-moz-transition:background-color .2s linear,opacity .2s linear;transition:background-color .2s linear,opacity .2s linear}.ps-container:hover .ps-scrollbar-y-rail,.ps-container.hover .ps-scrollbar-y-rail{opacity:.6;filter:alpha(opacity=60)}.ps-container .ps-scrollbar-y-rail:hover,.ps-container .ps-scrollbar-y-rail.hover{background-color:#eee;opacity:.9;filter:alpha(opacity=90)}.ps-container .ps-scrollbar-y-rail.in-scrolling{background-color:#eee;opacity:.9;filter:alpha(opacity=90)}.ps-container .ps-scrollbar-x{position:absolute;bottom:0;height:8px;background-color:#aaa;-webkit-border-radius:4px;-moz-border-radius:4px;border-radius:4px;-o-transition:background-color .2s linear;-webkit-transition:background-color.2s linear;-moz-transition:background-color .2s linear;transition:background-color .2s linear}.ps-container.ie6 .ps-scrollbar-x{font-size:0}.ps-container .ps-scrollbar-x-rail:hover .ps-scrollbar-x,.ps-container .ps-scrollbar-x-rail.hover .ps-scrollbar-x{background-color:#999}.ps-container .ps-scrollbar-y{position:absolute;right:0;width:8px;background-color:#aaa;-webkit-border-radius:4px;-moz-border-radius:4px;border-radius:4px;-o-transition:background-color .2s linear;-webkit-transition:background-color.2s linear;-moz-transition:background-color .2s linear;transition:background-color .2s linear}.ps-container.ie6 .ps-scrollbar-y{font-size:0}.ps-container .ps-scrollbar-y-rail:hover .ps-scrollbar-y,.ps-container .ps-scrollbar-y-rail.hover .ps-scrollbar-y{background-color:#999}.ps-container.ie .ps-scrollbar-x,.ps-container.ie .ps-scrollbar-y{visibility:hidden}.ps-container.ie:hover .ps-scrollbar-x,.ps-container.ie:hover .ps-scrollbar-y,.ps-container.ie.hover .ps-scrollbar-x,.ps-container.ie.hover .ps-scrollbar-y{visibility:visible}

package.json

@@ -1,6 +1,7 @@
 {
   "name": "perfect-scrollbar",
-  "version": "0.4.10",
+  "version": "0.5.2",
+  "main": "src/perfect-scrollbar.js",
   "engines": {
     "node": ">= 0.8.0"
   },

perfect-scrollbar.jquery.json

@@ -2,10 +2,10 @@
   "name": "perfect-scrollbar",
   "title": "perfect-scrollbar",
   "description": "Tiny but perfect jquery scrollbar plugin.",
-  "version": "0.4.10",
+  "version": "0.5.2",
   "author": {
-    "name": "Hyeonje Alex Jun",
-    "email": "noraesae@yuiazu.net",
+    "name": "Hyunje Alex Jun",
+    "email": "me@noraesae.net",
     "url": "https://github.com/noraesae/"
   },
   "licenses": [
@@ -15,7 +15,7 @@
     }
   ],
   "dependencies": {
-    "jquery": ">=1.8"
+    "jquery": ">=1.10"
   },
   "keywords": [
     "ui",
@@ -29,8 +29,8 @@
   "bugs": "https://github.com/noraesae/perfect-scrollbar/issues/",
   "maintainers": [
     {
-      "name": "Hyeonje Alex Jun",
-      "email": "noraesae@yuiazu.net",
+      "name": "Hyunje Alex Jun",
+      "email": "me@noraesae.net",
       "url": "https://github.com/noraesae/"
     }
   ]

src/jquery.mousewheel.js

@@ -1,201 +0,0 @@
-/*! Copyright (c) 2013 Brandon Aaron (http://brandon.aaron.sh)
- * Licensed under the MIT License (LICENSE.txt).
- *
- * Version: 3.1.9
- *
- * Requires: jQuery 1.2.2+
- */
-
-(function (factory) {
-    if ( typeof define === 'function' && define.amd ) {
-        // AMD. Register as an anonymous module.
-        define(['jquery'], factory);
-    } else if (typeof exports === 'object') {
-        // Node/CommonJS style for Browserify
-        module.exports = factory;
-    } else {
-        // Browser globals
-        factory(jQuery);
-    }
-}(function ($) {
-
-    var toFix  = ['wheel', 'mousewheel', 'DOMMouseScroll', 'MozMousePixelScroll'],
-        toBind = ( 'onwheel' in document || document.documentMode >= 9 ) ?
-                    ['wheel'] : ['mousewheel', 'DomMouseScroll', 'MozMousePixelScroll'],
-        slice  = Array.prototype.slice,
-        nullLowestDeltaTimeout, lowestDelta;
-
-    if ( $.event.fixHooks ) {
-        for ( var i = toFix.length; i; ) {
-            $.event.fixHooks[ toFix[--i] ] = $.event.mouseHooks;
-        }
-    }
-
-    var special = $.event.special.mousewheel = {
-        version: '3.1.9',
-
-        setup: function() {
-            if ( this.addEventListener ) {
-                for ( var i = toBind.length; i; ) {
-                    this.addEventListener( toBind[--i], handler, false );
-                }
-            } else {
-                this.onmousewheel = handler;
-            }
-            // Store the line height and page height for this particular element
-            $.data(this, 'mousewheel-line-height', special.getLineHeight(this));
-            $.data(this, 'mousewheel-page-height', special.getPageHeight(this));
-        },
-
-        teardown: function() {
-            if ( this.removeEventListener ) {
-                for ( var i = toBind.length; i; ) {
-                    this.removeEventListener( toBind[--i], handler, false );
-                }
-            } else {
-                this.onmousewheel = null;
-            }
-        },
-
-        getLineHeight: function(elem) {
-            return parseInt($(elem)['offsetParent' in $.fn ? 'offsetParent' : 'parent']().css('fontSize'), 10);
-        },
-
-        getPageHeight: function(elem) {
-            return $(elem).height();
-        },
-
-        settings: {
-            adjustOldDeltas: true
-        }
-    };
-
-    $.fn.extend({
-        mousewheel: function(fn) {
-            return fn ? this.bind('mousewheel', fn) : this.trigger('mousewheel');
-        },
-
-        unmousewheel: function(fn) {
-            return this.unbind('mousewheel', fn);
-        }
-    });
-
-
-    function handler(event) {
-        var orgEvent   = event || window.event,
-            args       = slice.call(arguments, 1),
-            delta      = 0,
-            deltaX     = 0,
-            deltaY     = 0,
-            absDelta   = 0;
-        event = $.event.fix(orgEvent);
-        event.type = 'mousewheel';
-
-        // Old school scrollwheel delta
-        if ( 'detail'      in orgEvent ) { deltaY = orgEvent.detail * -1;      }
-        if ( 'wheelDelta'  in orgEvent ) { deltaY = orgEvent.wheelDelta;       }
-        if ( 'wheelDeltaY' in orgEvent ) { deltaY = orgEvent.wheelDeltaY;      }
-        if ( 'wheelDeltaX' in orgEvent ) { deltaX = orgEvent.wheelDeltaX * -1; }
-
-        // Firefox < 17 horizontal scrolling related to DOMMouseScroll event
-        if ( 'axis' in orgEvent && orgEvent.axis === orgEvent.HORIZONTAL_AXIS ) {
-            deltaX = deltaY * -1;
-            deltaY = 0;
-        }
-
-        // Set delta to be deltaY or deltaX if deltaY is 0 for backwards compatabilitiy
-        delta = deltaY === 0 ? deltaX : deltaY;
-
-        // New school wheel delta (wheel event)
-        if ( 'deltaY' in orgEvent ) {
-            deltaY = orgEvent.deltaY * -1;
-            delta  = deltaY;
-        }
-        if ( 'deltaX' in orgEvent ) {
-            deltaX = orgEvent.deltaX;
-            if ( deltaY === 0 ) { delta  = deltaX * -1; }
-        }
-
-        // No change actually happened, no reason to go any further
-        if ( deltaY === 0 && deltaX === 0 ) { return; }
-
-        // Need to convert lines and pages to pixels if we aren't already in pixels
-        // There are three delta modes:
-        //   * deltaMode 0 is by pixels, nothing to do
-        //   * deltaMode 1 is by lines
-        //   * deltaMode 2 is by pages
-        if ( orgEvent.deltaMode === 1 ) {
-            var lineHeight = $.data(this, 'mousewheel-line-height');
-            delta  *= lineHeight;
-            deltaY *= lineHeight;
-            deltaX *= lineHeight;
-        } else if ( orgEvent.deltaMode === 2 ) {
-            var pageHeight = $.data(this, 'mousewheel-page-height');
-            delta  *= pageHeight;
-            deltaY *= pageHeight;
-            deltaX *= pageHeight;
-        }
-
-        // Store lowest absolute delta to normalize the delta values
-        absDelta = Math.max( Math.abs(deltaY), Math.abs(deltaX) );
-
-        if ( !lowestDelta || absDelta < lowestDelta ) {
-            lowestDelta = absDelta;
-
-            // Adjust older deltas if necessary
-            if ( shouldAdjustOldDeltas(orgEvent, absDelta) ) {
-                lowestDelta /= 40;
-            }
-        }
-
-        // Adjust older deltas if necessary
-        if ( shouldAdjustOldDeltas(orgEvent, absDelta) ) {
-            // Divide all the things by 40!
-            delta  /= 40;
-            deltaX /= 40;
-            deltaY /= 40;
-        }
-
-        // Get a whole, normalized value for the deltas
-        delta  = Math[ delta  >= 1 ? 'floor' : 'ceil' ](delta  / lowestDelta);
-        deltaX = Math[ deltaX >= 1 ? 'floor' : 'ceil' ](deltaX / lowestDelta);
-        deltaY = Math[ deltaY >= 1 ? 'floor' : 'ceil' ](deltaY / lowestDelta);
-
-        // Add information to the event object
-        event.deltaX = deltaX;
-        event.deltaY = deltaY;
-        event.deltaFactor = lowestDelta;
-        // Go ahead and set deltaMode to 0 since we converted to pixels
-        // Although this is a little odd since we overwrite the deltaX/Y
-        // properties with normalized deltas.
-        event.deltaMode = 0;
-
-        // Add event and delta to the front of the arguments
-        args.unshift(event, delta, deltaX, deltaY);
-
-        // Clearout lowestDelta after sometime to better
-        // handle multiple device types that give different
-        // a different lowestDelta
-        // Ex: trackpad = 3 and mouse wheel = 120
-        if (nullLowestDeltaTimeout) { clearTimeout(nullLowestDeltaTimeout); }
-        nullLowestDeltaTimeout = setTimeout(nullLowestDelta, 200);
-
-        return ($.event.dispatch || $.event.handle).apply(this, args);
-    }
-
-    function nullLowestDelta() {
-        lowestDelta = null;
-    }
-
-    function shouldAdjustOldDeltas(orgEvent, absDelta) {
-        // If this is an older event and the delta is divisable by 120,
-        // then we are assuming that the browser is treating this as an
-        // older mouse wheel event and that we should divide the deltas
-        // by 40 to try and get a more usable deltaFactor.
-        // Side note, this actually impacts the reported scroll distance
-        // in older browsers and can cause scrolling to be slower than native.
-        // Turn this off by setting $.event.special.mousewheel.settings.adjustOldDeltas to false.
-        return special.settings.adjustOldDeltas && orgEvent.type === 'mousewheel' && absDelta % 120 === 0;
-    }
-
-}));

src/perfect-scrollbar.css

@@ -6,7 +6,7 @@
     -moz-border-radius: 4px;
     border-radius: 4px;
     opacity: 0;
-    filter: alpha(opacity = 0);
+    filter: alpha(opacity=0);
     -o-transition: background-color .2s linear, opacity .2s linear;
     -webkit-transition: background-color .2s linear, opacity .2s linear;
     -moz-transition: background-color .2s linear, opacity .2s linear;
@@ -16,20 +16,20 @@
 .ps-container:hover .ps-scrollbar-x-rail,
 .ps-container.hover .ps-scrollbar-x-rail {
     opacity: 0.6;
-    filter: alpha(opacity = 60);
+    filter: alpha(opacity=60);
 }
 
 .ps-container .ps-scrollbar-x-rail:hover,
 .ps-container .ps-scrollbar-x-rail.hover {
     background-color: #eee;
     opacity: 0.9;
-    filter: alpha(opacity = 90);
+    filter: alpha(opacity=90);
 }
 
 .ps-container .ps-scrollbar-x-rail.in-scrolling {
     background-color: #eee;
     opacity: 0.9;
-    filter: alpha(opacity = 90);
+    filter: alpha(opacity=90);
 }
 
 .ps-container .ps-scrollbar-y-rail {
@@ -50,20 +50,20 @@
 .ps-container:hover .ps-scrollbar-y-rail,
 .ps-container.hover .ps-scrollbar-y-rail {
     opacity: 0.6;
-    filter: alpha(opacity = 60);
+    filter: alpha(opacity=60);
 }
 
 .ps-container .ps-scrollbar-y-rail:hover,
 .ps-container .ps-scrollbar-y-rail.hover {
     background-color: #eee;
     opacity: 0.9;
-    filter: alpha(opacity = 90);
+    filter: alpha(opacity=90);
 }
 
 .ps-container .ps-scrollbar-y-rail.in-scrolling {
     background-color: #eee;
     opacity: 0.9;
-    filter: alpha(opacity = 90);
+    filter: alpha(opacity=90);
 }
 
 .ps-container .ps-scrollbar-x {

src/perfect-scrollbar.js

@@ -1,4 +1,4 @@
-/* Copyright (c) 2012, 2014 Hyeonje Alex Jun and other contributors
+/* Copyright (c) 2012, 2014 Hyunje Alex Jun and other contributors
  * Licensed under the MIT License
  */
 (function (factory) {
@@ -19,9 +19,10 @@
 
   // The default settings for the plugin
   var defaultSettings = {
-    wheelSpeed: 10,
+    wheelSpeed: 1,
     wheelPropagation: false,
     minScrollbarLength: null,
+    maxScrollbarLength: null,
     useBothWheelAxes: false,
     useKeyboard: true,
     suppressScrollX: false,
@@ -102,7 +103,9 @@
           isScrollbarYUsingRight = scrollbarYRight === scrollbarYRight, // !isNaN
           scrollbarYLeft = isScrollbarYUsingRight ? null: parseInt($scrollbarYRail.css('left'), 10),
           isRtl = $this.css('direction') === "rtl",
-          eventClassName = getEventClassName();
+          eventClassName = getEventClassName(),
+          railBorderXWidth = parseInt($scrollbarXRail.css('borderLeftWidth'), 10) + parseInt($scrollbarXRail.css('borderRightWidth'), 10),
+          railBorderYWidth = parseInt($scrollbarXRail.css('borderTopWidth'), 10) + parseInt($scrollbarXRail.css('borderBottomWidth'), 10);
 
       var updateContentScrollTop = function (currentTop, deltaY) {
         var newTop = currentTop + deltaY,
@@ -120,12 +123,6 @@
 
         var scrollTop = parseInt(scrollbarYTop * (contentHeight - containerHeight) / (containerHeight - scrollbarYHeight), 10);
         $this.scrollTop(scrollTop);
-
-        if (isScrollbarXUsingBottom) {
-          $scrollbarXRail.css({bottom: scrollbarXBottom - scrollTop});
-        } else {
-          $scrollbarXRail.css({top: scrollbarXTop + scrollTop});
-        }
       };
 
       var updateContentScrollLeft = function (currentLeft, deltaX) {
@@ -144,18 +141,15 @@
 
         var scrollLeft = parseInt(scrollbarXLeft * (contentWidth - containerWidth) / (containerWidth - scrollbarXWidth), 10);
         $this.scrollLeft(scrollLeft);
-
-        if (isScrollbarYUsingRight) {
-          $scrollbarYRail.css({right: scrollbarYRight - scrollLeft});
-        } else {
-          $scrollbarYRail.css({left: scrollbarYLeft + scrollLeft});
-        }
       };
 
       var getSettingsAdjustedThumbSize = function (thumbSize) {
         if (settings.minScrollbarLength) {
           thumbSize = Math.max(thumbSize, settings.minScrollbarLength);
         }
+        if (settings.maxScrollbarLength) {
+          thumbSize = Math.min(thumbSize, settings.maxScrollbarLength);
+        }
         return thumbSize;
       };
 
@@ -190,11 +184,27 @@
         }
         $scrollbarYRail.css(scrollbarYStyles);
 
-        $scrollbarX.css({left: scrollbarXLeft, width: scrollbarXWidth});
-        $scrollbarY.css({top: scrollbarYTop, height: scrollbarYHeight});
+        $scrollbarX.css({left: scrollbarXLeft, width: scrollbarXWidth - railBorderXWidth});
+        $scrollbarY.css({top: scrollbarYTop, height: scrollbarYHeight - railBorderYWidth});
+
+        if (scrollbarXActive) {
+          $this.addClass('ps-active-x');
+        } else {
+          $this.removeClass('ps-active-x');
+        }
+
+        if (scrollbarYActive) {
+          $this.addClass('ps-active-y');
+        } else {
+          $this.removeClass('ps-active-y');
+        }
       };
 
       var updateBarSizeAndPosition = function () {
+        // Hide scrollbars not to affect scrollWidth and scrollHeight
+        $scrollbarXRail.hide();
+        $scrollbarYRail.hide();
+
         containerWidth = settings.includePadding ? $this.innerWidth() : $this.width();
         containerHeight = settings.includePadding ? $this.innerHeight() : $this.height();
         contentWidth = $this.prop('scrollWidth');
@@ -232,6 +242,14 @@
         }
 
         updateScrollbarCss();
+
+        // Show scrollbars if needed after updated
+        if (!settings.suppressScrollX) {
+          $scrollbarXRail.show();
+        }
+        if (!settings.suppressScrollY) {
+          $scrollbarYRail.show();
+        }
       };
 
       var bindMouseScrollXHandler = function () {
@@ -249,6 +267,7 @@
         $(document).bind('mousemove' + eventClassName, function (e) {
           if ($scrollbarXRail.hasClass('in-scrolling')) {
             updateContentScrollLeft(currentLeft, e.pageX - currentPageX);
+            updateBarSizeAndPosition();
             e.stopPropagation();
             e.preventDefault();
           }
@@ -279,6 +298,7 @@
         $(document).bind('mousemove' + eventClassName, function (e) {
           if ($scrollbarYRail.hasClass('in-scrolling')) {
             updateContentScrollTop(currentTop, e.pageY - currentPageY);
+            updateBarSizeAndPosition();
             e.stopPropagation();
             e.preventDefault();
           }
@@ -320,16 +340,38 @@
 
       // bind handlers
       var bindMouseWheelHandler = function () {
-        // FIXME: Backward compatibility.
-        // After e.deltaFactor applied, wheelSpeed should have smaller value.
-        // Currently, there's no way to change the settings after the scrollbar initialized.
-        // But if the way is implemented in the future, wheelSpeed should be reset.
-        settings.wheelSpeed /= 10;
-
         var shouldPrevent = false;
-        $this.bind('mousewheel' + eventClassName, function (e, deprecatedDelta, deprecatedDeltaX, deprecatedDeltaY) {
-          var deltaX = e.deltaX * e.deltaFactor || deprecatedDeltaX,
-              deltaY = e.deltaY * e.deltaFactor || deprecatedDeltaY;
+
+        var getDeltaFromEvent = function (e) {
+          var deltaX = e.originalEvent.deltaX,
+              deltaY = -1 * e.originalEvent.deltaY;
+
+          if (typeof deltaX === "undefined" || typeof deltaY === "undefined") {
+            // OS X Safari
+            deltaX = -1 * e.originalEvent.wheelDeltaX / 6;
+            deltaY = e.originalEvent.wheelDeltaY / 6;
+          }
+
+          if (e.originalEvent.deltaMode && e.originalEvent.deltaMode === 1) {
+            // Firefox in deltaMode 1: Line scrolling
+            deltaX *= 10;
+            deltaY *= 10;
+          }
+
+          if (deltaX !== deltaX && deltaY !== deltaY/* NaN checks */) {
+            // IE in some mouse drivers
+            deltaX = 0;
+            deltaY = e.originalEvent.wheelDelta;
+          }
+
+          return [deltaX, deltaY];
+        };
+
+        var mousewheelHandler = function (e) {
+          var delta = getDeltaFromEvent(e);
+
+          var deltaX = delta[0],
+              deltaY = delta[1];
 
           shouldPrevent = false;
           if (!settings.useBothWheelAxes) {
@@ -365,14 +407,13 @@
             e.stopPropagation();
             e.preventDefault();
           }
-        });
+        };
 
-        // fix Firefox scroll problem
-        $this.bind('MozMousePixelScroll' + eventClassName, function (e) {
-          if (shouldPrevent) {
-            e.preventDefault();
-          }
-        });
+        if (typeof window.onwheel !== "undefined") {
+          $this.bind('wheel' + eventClassName, mousewheelHandler);
+        } else if (typeof window.onmousewheel !== "undefined") {
+          $this.bind('mousewheel' + eventClassName, mousewheelHandler);
+        }
       };
 
       var bindKeyboardHandler = function () {
@@ -386,6 +427,10 @@
 
         var shouldPrevent = false;
         $(document).bind('keydown' + eventClassName, function (e) {
+          if (e.isDefaultPrevented && e.isDefaultPrevented()) {
+            return;
+          }
+
           if (!hovered || $(document.activeElement).is(":input,[contenteditable]")) {
             return;
           }
@@ -651,12 +696,11 @@
         bindMouseScrollXHandler();
         bindMouseScrollYHandler();
         bindRailClickHandler();
+        bindMouseWheelHandler();
+
         if (supportsTouch) {
           bindMobileTouchHandler();
         }
-        if ($this.mousewheel) {
-          bindMouseWheelHandler();
-        }
         if (settings.useKeyboard) {
           bindKeyboardHandler();
         }