3 files changed, 657 insertions, 11 deletions

diff --git a/js/hammer.js b/js/hammer.js
new file mode 100755
index 0000000..44a5802
--- /dev/null
+++ b/js/hammer.js
@@ -0,0 +1,586 @@
+/*
+ * Hammer.JS
+ * version 0.4
+ * author: Eight Media
+ * https://github.com/EightMedia/hammer.js
+ */
+function Hammer(element, options, undefined)
+{
+    var self = this;
+
+    var defaults = {
+        // prevent the default event or not... might be buggy when false
+        prevent_default    : false,
+        css_hacks          : true,
+
+        drag               : true,
+        drag_vertical      : true,
+        drag_horizontal    : true,
+        // minimum distance before the drag event starts
+        drag_min_distance  : 20, // pixels
+
+        // pinch zoom and rotation
+        transform          : true,
+        scale_treshold     : 0.1,
+        rotation_treshold  : 15, // degrees
+
+        tap                : true,
+        tap_double         : true,
+        tap_max_interval   : 300,
+        tap_double_distance: 20,
+
+        hold               : true,
+        hold_timeout       : 500
+    };
+    options = mergeObject(defaults, options);
+
+    // some css hacks
+    (function() {
+        if(!options.css_hacks) {
+            return false;
+        }
+
+        var vendors = ['webkit','moz','ms','o',''];
+        var css_props = {
+            "userSelect": "none",
+            "touchCallout": "none",
+            "userDrag": "none",
+            "tapHighlightColor": "rgba(0,0,0,0)"
+        };
+
+        var prop = '';
+        for(var i = 0; i < vendors.length; i++) {
+            for(var p in css_props) {
+                prop = p;
+                if(vendors[i]) {
+                    prop = vendors[i] + prop.substring(0, 1).toUpperCase() + prop.substring(1);
+                }
+                element.style[ prop ] = css_props[p];
+            }
+        }
+    })();
+
+    // holds the distance that has been moved
+    var _distance = 0;
+
+    // holds the exact angle that has been moved
+    var _angle = 0;
+
+    // holds the diraction that has been moved
+    var _direction = 0;
+
+    // holds position movement for sliding
+    var _pos = { };
+
+    // how many fingers are on the screen
+    var _fingers = 0;
+
+    var _first = false;
+
+    var _gesture = null;
+    var _prev_gesture = null;
+
+    var _touch_start_time = null;
+    var _prev_tap_pos = {x: 0, y: 0};
+    var _prev_tap_end_time = null;
+
+    var _hold_timer = null;
+
+    var _offset = {};
+
+    // keep track of the mouse status
+    var _mousedown = false;
+
+    var _event_start;
+    var _event_move;
+    var _event_end;
+
+
+    /**
+     * angle to direction define
+     * @param  float    angle
+     * @return string   direction
+     */
+    this.getDirectionFromAngle = function( angle )
+    {
+        var directions = {
+            down: angle >= 45 && angle < 135, //90
+            left: angle >= 135 || angle <= -135, //180
+            up: angle < -45 && angle > -135, //270
+            right: angle >= -45 && angle <= 45 //0
+        };
+
+        var direction, key;
+        for(key in directions){
+            if(directions[key]){
+                direction = key;
+                break;
+            }
+        }
+        return direction;
+    };
+
+
+    /**
+     * count the number of fingers in the event
+     * when no fingers are detected, one finger is returned (mouse pointer)
+     * @param  event
+     * @return int  fingers
+     */
+    function countFingers( event )
+    {
+        // there is a bug on android (until v4?) that touches is always 1,
+        // so no multitouch is supported, e.g. no, zoom and rotation...
+        return event.touches ? event.touches.length : 1;
+    }
+
+
+    /**
+     * get the x and y positions from the event object
+     * @param  event
+     * @return array  [{ x: int, y: int }]
+     */
+    function getXYfromEvent( event )
+    {
+        event = event || window.event;
+
+        // no touches, use the event pageX and pageY
+        if(!event.touches) {
+            var doc = document,
+                body = doc.body;
+
+            return [{
+                x: event.pageX || event.clientX + ( doc && doc.scrollLeft || body && body.scrollLeft || 0 ) - ( doc && doc.clientLeft || body && doc.clientLeft || 0 ),
+                y: event.pageY || event.clientY + ( doc && doc.scrollTop || body && body.scrollTop || 0 ) - ( doc && doc.clientTop || body && doc.clientTop || 0 )
+            }];
+        }
+        // multitouch, return array with positions
+        else {
+            var pos = [], src;
+            for(var t=0, len=event.touches.length; t<len; t++) {
+                src = event.touches[t];
+                pos.push({ x: src.pageX, y: src.pageY });
+            }
+            return pos;
+        }
+    }
+
+
+    /**
+     * calculate the angle between two points
+     * @param object pos1 { x: int, y: int }
+     * @param object pos2 { x: int, y: int }
+     */
+    function getAngle( pos1, pos2 )
+    {
+        return Math.atan2(pos2.y - pos1.y, pos2.x - pos1.x) * 180 / Math.PI;
+    }
+
+    /**
+     * trigger an event/callback by name with params
+     * @param string name
+     * @param array  params
+     */
+    function triggerEvent( eventName, params )
+    {
+        // return touches object
+        params.touches = getXYfromEvent(params.originalEvent);
+        params.type = eventName;
+
+        // trigger callback
+        if(isFunction(self["on"+ eventName])) {
+            self["on"+ eventName].call(self, params);
+        }
+    }
+
+
+    /**
+     * cancel event
+     * @param   object  event
+     * @return  void
+     */
+
+    function cancelEvent(event){
+        event = event || window.event;
+        if(event.preventDefault){
+            event.preventDefault();
+        }else{
+            event.returnValue = false;
+            event.cancelBubble = true;
+        }
+    }
+
+
+    /**
+     * reset the internal vars to the start values
+     */
+    function reset()
+    {
+        _pos = {};
+        _first = false;
+        _fingers = 0;
+        _distance = 0;
+        _angle = 0;
+        _gesture = null;
+    }
+
+
+    var gestures = {
+        // hold gesture
+        // fired on touchstart
+        hold : function(event)
+        {
+            // only when one finger is on the screen
+            if(options.hold) {
+                _gesture = 'hold';
+                clearTimeout(_hold_timer);
+
+                _hold_timer = setTimeout(function() {
+                    if(_gesture == 'hold') {
+                        triggerEvent("hold", {
+                            originalEvent   : event,
+                            position        : _pos.start
+                        });
+                    }
+                }, options.hold_timeout);
+            }
+        },
+
+
+        // drag gesture
+        // fired on mousemove
+        drag : function(event)
+        {
+            // get the distance we moved
+            var _distance_x = _pos.move[0].x - _pos.start[0].x;