asp.net+js+ajax实现手机移动端页面预览、剪裁、上传头像图片

参考资料：支持移动设备触摸图片裁剪的jQuery插件

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TestJavaScript.js

var _imgFile;

function gestureImage() {
    var gesture = document.getElementById("gesture");
    gesture.style.display = "";
    var form1 = document.getElementById("form1");
    form1.style.display = "none";
}

function uploadFace() {
    $.ajax({
        type: "post",
        url: "/CampusBattle/Handlers/AjaxHandler.ashx",
        data: {
            type: "SaveInformation",
            face: _imgFile
        },
        dataType: "json",
        success: function (data) {
            alert(data);
        },
        error: function (xmlHttpRequest, textStatus, errorThrown) {
            alert("加载失败：服务器错误。");
            console.log(xmlHttpRequest.status);
            console.log(xmlHttpRequest.readyState);
            console.log(textStatus);
            console.log(errorThrown);
        }
    });
}

iscroll-zoom.js

/*! iScroll v5.1.3 ~ (c) 2008-2014 Matteo Spinelli ~ http://cubiq.org/license */
(function (window, document, Math) {
var rAF = window.requestAnimationFrame	||
	window.webkitRequestAnimationFrame	||
	window.mozRequestAnimationFrame		||
	window.oRequestAnimationFrame		||
	window.msRequestAnimationFrame		||
	function (callback) { window.setTimeout(callback, 1000 / 60); };

var utils = (function () {
	var me = {};

	var _elementStyle = document.createElement('div').style;
	var _vendor = (function () {
		var vendors = ['t', 'webkitT', 'MozT', 'msT', 'OT'],
			transform,
			i = 0,
			l = vendors.length;

		for ( ; i < l; i++ ) {
			transform = vendors[i] + 'ransform';
			if ( transform in _elementStyle ) return vendors[i].substr(0, vendors[i].length-1);
		}

		return false;
	})();

	function _prefixStyle (style) {
		if ( _vendor === false ) return false;
		if ( _vendor === '' ) return style;
		return _vendor + style.charAt(0).toUpperCase() + style.substr(1);
	}

	me.getTime = Date.now || function getTime () { return new Date().getTime(); };

	me.extend = function (target, obj) {
		for ( var i in obj ) {
			target[i] = obj[i];
		}
	};

	me.addEvent = function (el, type, fn, capture) {
		el.addEventListener(type, fn, !!capture);
	};

	me.removeEvent = function (el, type, fn, capture) {
		el.removeEventListener(type, fn, !!capture);
	};

	me.prefixPointerEvent = function (pointerEvent) {
		return window.MSPointerEvent ?
			'MSPointer' + pointerEvent.charAt(9).toUpperCase() + pointerEvent.substr(10):
			pointerEvent;
	};

	me.momentum = function (current, start, time, lowerMargin, wrapperSize, deceleration) {
		var distance = current - start,
			speed = Math.abs(distance) / time,
			destination,
			duration;

		deceleration = deceleration === undefined ? 0.0006 : deceleration;

		destination = current + ( speed * speed ) / ( 2 * deceleration ) * ( distance < 0 ? -1 : 1 );
		duration = speed / deceleration;

		if ( destination < lowerMargin ) {
			destination = wrapperSize ? lowerMargin - ( wrapperSize / 2.5 * ( speed / 8 ) ) : lowerMargin;
			distance = Math.abs(destination - current);
			duration = distance / speed;
		} else if ( destination > 0 ) {
			destination = wrapperSize ? wrapperSize / 2.5 * ( speed / 8 ) : 0;
			distance = Math.abs(current) + destination;
			duration = distance / speed;
		}

		return {
			destination: Math.round(destination),
			duration: duration
		};
	};

	var _transform = _prefixStyle('transform');

	me.extend(me, {
		hasTransform: _transform !== false,
		hasPerspective: _prefixStyle('perspective') in _elementStyle,
		hasTouch: 'ontouchstart' in window,
		hasPointer: window.PointerEvent || window.MSPointerEvent, // IE10 is prefixed
		hasTransition: _prefixStyle('transition') in _elementStyle
	});

	// This should find all Android browsers lower than build 535.19 (both stock browser and webview)
	me.isBadAndroid = /Android /.test(window.navigator.appVersion) && !(/Chrome\/\d/.test(window.navigator.appVersion));

	me.extend(me.style = {}, {
		transform: _transform,
		transitionTimingFunction: _prefixStyle('transitionTimingFunction'),
		transitionDuration: _prefixStyle('transitionDuration'),
		transitionDelay: _prefixStyle('transitionDelay'),
		transformOrigin: _prefixStyle('transformOrigin')
	});

	me.hasClass = function (e, c) {
		var re = new RegExp("(^|\\s)" + c + "(\\s|$)");
		return re.test(e.className);
	};

	me.addClass = function (e, c) {
		if ( me.hasClass(e, c) ) {
			return;
		}

		var newclass = e.className.split(' ');
		newclass.push(c);
		e.className = newclass.join(' ');
	};

	me.removeClass = function (e, c) {
		if ( !me.hasClass(e, c) ) {
			return;
		}

		var re = new RegExp("(^|\\s)" + c + "(\\s|$)", 'g');
		e.className = e.className.replace(re, ' ');
	};

	me.offset = function (el) {
		var left = -el.offsetLeft,
			top = -el.offsetTop;

		// jshint -W084
		while (el = el.offsetParent) {
			left -= el.offsetLeft;
			top -= el.offsetTop;
		}
		// jshint +W084

		return {
			left: left,
			top: top
		};
	};

	me.preventDefaultException = function (el, exceptions) {
		for ( var i in exceptions ) {
			if ( exceptions[i].test(el[i]) ) {
				return true;
			}
		}

		return false;
	};

	me.extend(me.eventType = {}, {
		touchstart: 1,
		touchmove: 1,
		touchend: 1,

		mousedown: 2,
		mousemove: 2,
		mouseup: 2,

		pointerdown: 3,
		pointermove: 3,
		pointerup: 3,

		MSPointerDown: 3,
		MSPointerMove: 3,
		MSPointerUp: 3
	});

	me.extend(me.ease = {}, {
		quadratic: {
			style: 'cubic-bezier(0.25, 0.46, 0.45, 0.94)',
			fn: function (k) {
				return k * ( 2 - k );
			}
		},
		circular: {
			style: 'cubic-bezier(0.1, 0.57, 0.1, 1)',	// Not properly "circular" but this looks better, it should be (0.075, 0.82, 0.165, 1)
			fn: function (k) {
				return Math.sqrt( 1 - ( --k * k ) );
			}
		},
		back: {
			style: 'cubic-bezier(0.175, 0.885, 0.32, 1.275)',
			fn: function (k) {
				var b = 4;
				return ( k = k - 1 ) * k * ( ( b + 1 ) * k + b ) + 1;
			}
		},
		bounce: {
			style: '',
			fn: function (k) {
				if ( ( k /= 1 ) < ( 1 / 2.75 ) ) {
					return 7.5625 * k * k;
				} else if ( k < ( 2 / 2.75 ) ) {
					return 7.5625 * ( k -= ( 1.5 / 2.75 ) ) * k + 0.75;
				} else if ( k < ( 2.5 / 2.75 ) ) {
					return 7.5625 * ( k -= ( 2.25 / 2.75 ) ) * k + 0.9375;
				} else {
					return 7.5625 * ( k -= ( 2.625 / 2.75 ) ) * k + 0.984375;
				}
			}
		},
		elastic: {
			style: '',
			fn: function (k) {
				var f = 0.22,
					e = 0.4;

				if ( k === 0 ) { return 0; }
				if ( k == 1 ) { return 1; }

				return ( e * Math.pow( 2, - 10 * k ) * Math.sin( ( k - f / 4 ) * ( 2 * Math.PI ) / f ) + 1 );
			}
		}
	});

	me.tap = function (e, eventName) {
		var ev = document.createEvent('Event');
		ev.initEvent(eventName, true, true);
		ev.pageX = e.pageX;
		ev.pageY = e.pageY;
		e.target.dispatchEvent(ev);
	};

	me.click = function (e) {
		var target = e.target,
			ev;

		if ( !(/(SELECT|INPUT|TEXTAREA)/i).test(target.tagName) ) {
			ev = document.createEvent('MouseEvents');
			ev.initMouseEvent('click', true, true, e.view, 1,
				target.screenX, target.screenY, target.clientX, target.clientY,
				e.ctrlKey, e.altKey, e.shiftKey, e.metaKey,
				0, null);

			ev._constructed = true;
			target.dispatchEvent(ev);
		}
	};

	return me;
})();

function IScroll (el, options) {
	this.wrapper = typeof el == 'string' ? document.querySelector(el) : el;
	this.scroller = this.wrapper.children[0];
	this.scrollerStyle = this.scroller.style;		// cache style for better performance

	this.options = {

		zoomMin: 1,
		zoomMax: 4, zoomStart: 1,

		resizeScrollbars: true,

		mouseWheelSpeed: 20,

		snapThreshold: 0.334,

// INSERT POINT: OPTIONS

		startX: 0,
		startY: 0,
		scrollY: true,
		directionLockThreshold: 5,
		momentum: true,

		bounce: true,
		bounceTime: 600,
		bounceEasing: '',

		preventDefault: true,
		preventDefaultException: { tagName: /^(INPUT|TEXTAREA|BUTTON|SELECT)$/ },

		HWCompositing: true,
		useTransition: true,
		useTransform: true
	};

	for ( var i in options ) {
		this.options[i] = options[i];
	}

	// Normalize options
	this.translateZ = this.options.HWCompositing && utils.hasPerspective ? ' translateZ(0)' : '';

	this.options.useTransition = utils.hasTransition && this.options.useTransition;
	this.options.useTransform = utils.hasTransform && this.options.useTransform;

	this.options.eventPassthrough = this.options.eventPassthrough === true ? 'vertical' : this.options.eventPassthrough;
	this.options.preventDefault = !this.options.eventPassthrough && this.options.preventDefault;

	// If you want eventPassthrough I have to lock one of the axes
	this.options.scrollY = this.options.eventPassthrough == 'vertical' ? false : this.options.scrollY;
	this.options.scrollX = this.options.eventPassthrough == 'horizontal' ? false : this.options.scrollX;

	// With eventPassthrough we also need lockDirection mechanism
	this.options.freeScroll = this.options.freeScroll && !this.options.eventPassthrough;
	this.options.directionLockThreshold = this.options.eventPassthrough ? 0 : this.options.directionLockThreshold;

	this.options.bounceEasing = typeof this.options.bounceEasing == 'string' ? utils.ease[this.options.bounceEasing] || utils.ease.circular : this.options.bounceEasing;

	this.options.resizePolling = this.options.resizePolling === undefined ? 60 : this.options.resizePolling;

	if ( this.options.tap === true ) {
		this.options.tap = 'tap';
	}

	if ( this.options.shrinkScrollbars == 'scale' ) {
		this.options.useTransition = false;
	}

	this.options.invertWheelDirection = this.options.invertWheelDirection ? -1 : 1;

// INSERT POINT: NORMALIZATION

	// Some defaults
	this.x = 0;
	this.y = 0;
	this.directionX = 0;
	this.directionY = 0;
	this._events = {};

	this.scale = Math.min(Math.max(this.options.zoomStart, this.options.zoomMin), this.options.zoomMax);

// INSERT POINT: DEFAULTS

	this._init();
	this.refresh();

	this.scrollTo(this.options.startX, this.options.startY);
	this.enable();
}

IScroll.prototype = {
	version: '5.1.3',

	_init: function () {
		this._initEvents();

		if ( this.options.zoom ) {
			this._initZoom();
		}

		if ( this.options.scrollbars || this.options.indicators ) {
			this._initIndicators();
		}

		if ( this.options.mouseWheel ) {
			this._initWheel();
		}

		if ( this.options.snap ) {
			this._initSnap();
		}

		if ( this.options.keyBindings ) {
			this._initKeys();
		}

// INSERT POINT: _init

	},

	destroy: function () {
		this._initEvents(true);

		this._execEvent('destroy');
	},

	_transitionEnd: function (e) {
		if ( e.target != this.scroller || !this.isInTransition ) {
			return;
		}

		this._transitionTime();
		if ( !this.resetPosition(this.options.bounceTime) ) {
			this.isInTransition = false;
			this._execEvent('scrollEnd');
		}
	},

	_start: function (e) {
		// React to left mouse button only
		if ( utils.eventType[e.type] != 1 ) {
			if ( e.button !== 0 ) {
				return;
			}
		}

		if ( !this.enabled || (this.initiated && utils.eventType[e.type] !== this.initiated) ) {
			return;
		}

		if ( this.options.preventDefault && !utils.isBadAndroid && !utils.preventDefaultException(e.target, this.options.preventDefaultException) ) {
			e.preventDefault();
		}

		var point = e.touches ? e.touches[0] : e,
			pos;

		this.initiated	= utils.eventType[e.type];
		this.moved		= false;
		this.distX		= 0;
		this.distY		= 0;
		this.directionX = 0;
		this.directionY = 0;
		this.directionLocked = 0;

		this._transitionTime();

		this.startTime = utils.getTime();

		if ( this.options.useTransition && this.isInTransition ) {
			this.isInTransition = false;
			pos = this.getComputedPosition();
			this._translate(Math.round(pos.x), Math.round(pos.y));
			this._execEvent('scrollEnd');
		} else if ( !this.options.useTransition && this.isAnimating ) {
			this.isAnimating = false;
			this._execEvent('scrollEnd');
		}

		this.startX    = this.x;
		this.startY    = this.y;
		this.absStartX = this.x;
		this.absStartY = this.y;
		this.pointX    = point.pageX;
		this.pointY    = point.pageY;

		this._execEvent('beforeScrollStart');
	},

	_move: function (e) {
		if ( !this.enabled || utils.eventType[e.type] !== this.initiated ) {
			return;
		}

		if ( this.options.preventDefault ) {	// increases performance on Android? TODO: check!
			e.preventDefault();
		}

		var point		= e.touches ? e.touches[0] : e,
			deltaX		= point.pageX - this.pointX,
			deltaY		= point.pageY - this.pointY,
			timestamp	= utils.getTime(),
			newX, newY,
			absDistX, absDistY;

		this.pointX		= point.pageX;
		this.pointY		= point.pageY;

		this.distX		+= deltaX;
		this.distY		+= deltaY;
		absDistX		= Math.abs(this.distX);
		absDistY		= Math.abs(this.distY);

		// We need to move at least 10 pixels for the scrolling to initiate
		if ( timestamp - this.endTime > 300 && (absDistX < 10 && absDistY < 10) ) {
			return;
		}

		// If you are scrolling in one direction lock the other
		if ( !this.directionLocked && !this.options.freeScroll ) {
			if ( absDistX > absDistY + this.options.directionLockThreshold ) {
				this.directionLocked = 'h';		// lock horizontally
			} else if ( absDistY >= absDistX + this.options.directionLockThreshold ) {
				this.directionLocked = 'v';		// lock vertically
			} else {
				this.directionLocked = 'n';		// no lock
			}
		}

		if ( this.directionLocked == 'h' ) {
			if ( this.options.eventPassthrough == 'vertical' ) {
				e.preventDefault();
			} else if ( this.options.eventPassthrough == 'horizontal' ) {
				this.initiated = false;
				return;
			}

			deltaY = 0;
		} else if ( this.directionLocked == 'v' ) {
			if ( this.options.eventPassthrough == 'horizontal' ) {
				e.preventDefault();
			} else if ( this.options.eventPassthrough == 'vertical' ) {
				this.initiated = false;
				return;
			}

			deltaX = 0;
		}

		deltaX = this.hasHorizontalScroll ? deltaX : 0;
		deltaY = this.hasVerticalScroll ? deltaY : 0;

		newX = this.x + deltaX;
		newY = this.y + deltaY;

		// Slow down if outside of the boundaries
		if ( newX > 0 || newX < this.maxScrollX ) {
			newX = this.options.bounce ? this.x + deltaX / 3 : newX > 0 ? 0 : this.maxScrollX;
		}
		if ( newY > 0 || newY < this.maxScrollY ) {
			newY = this.options.bounce ? this.y + deltaY / 3 : newY > 0 ? 0 : this.maxScrollY;
		}

		this.directionX = deltaX > 0 ? -1 : deltaX < 0 ? 1 : 0;
		this.directionY = deltaY > 0 ? -1 : deltaY < 0 ? 1 : 0;

		if ( !this.moved ) {
			this._execEvent('scrollStart');
		}

		this.moved = true;

		this._translate(newX, newY);

/* REPLACE START: _move */

		if ( timestamp - this.startTime > 300 ) {
			this.startTime = timestamp;
			this.startX = this.x;
			this.startY = this.y;
		}

/* REPLACE END: _move */

	},

	_end: function (e) {
		if ( !this.enabled || utils.eventType[e.type] !== this.initiated ) {
			return;
		}

		if ( this.options.preventDefault && !utils.preventDefaultException(e.target, this.options.preventDefaultException) ) {
			e.preventDefault();
		}

		var point = e.changedTouches ? e.changedTouches[0] : e,
			momentumX,
			momentumY,
			duration = utils.getTime() - this.startTime,
			newX = Math.round(this.x),
			newY = Math.round(this.y),
			distanceX = Math.abs(newX - this.startX),
			distanceY = Math.abs(newY - this.startY),
			time = 0,
			easing = '';

		this.isInTransition = 0;
		this.initiated = 0;
		this.endTime = utils.getTime();

		// reset if we are outside of the boundaries
		if ( this.resetPosition(this.options.bounceTime) ) {
			return;
		}

		this.scrollTo(newX, newY);	// ensures that the last position is rounded

		// we scrolled less than 10 pixels
		if ( !this.moved ) {
			if ( this.options.tap ) {
				utils.tap(e, this.options.tap);
			}

			if ( this.options.click ) {
				utils.click(e);
			}

			this._execEvent('scrollCancel');
			return;
		}

		if ( this._events.flick && duration < 200 && distanceX < 100 && distanceY < 100 ) {
			this._execEvent('flick');
			return;
		}

		// start momentum animation if needed
		if ( this.options.momentum && duration < 300 ) {
			momentumX = this.hasHorizontalScroll ? utils.momentum(this.x, this.startX, duration, this.maxScrollX, this.options.bounce ? this.wrapperWidth : 0, this.options.deceleration) : { destination: newX, duration: 0 };
			momentumY = this.hasVerticalScroll ? utils.momentum(this.y, this.startY, duration, this.maxScrollY, this.options.bounce ? this.wrapperHeight : 0, this.options.deceleration) : { destination: newY, duration: 0 };
			newX = momentumX.destination;
			newY = momentumY.destination;
			time = Math.max(momentumX.duration, momentumY.duration);
			this.isInTransition = 1;
		}


		if ( this.options.snap ) {
			var snap = this._nearestSnap(newX, newY);
			this.currentPage = snap;
			time = this.options.snapSpeed || Math.max(
					Math.max(
						Math.min(Math.abs(newX - snap.x), 1000),
						Math.min(Math.abs(newY - snap.y), 1000)
					), 300);
			newX = snap.x;
			newY = snap.y;

			this.directionX = 0;
			this.directionY = 0;
			easing = this.options.bounceEasing;
		}

// INSERT POINT: _end

		if ( newX != this.x || newY != this.y ) {
			// change easing function when scroller goes out of the boundaries
			if ( newX > 0 || newX < this.maxScrollX || newY > 0 || newY < this.maxScrollY ) {
				easing = utils.ease.quadratic;
			}

			this.scrollTo(newX, newY, time, easing);
			return;
		}

		this._execEvent('scrollEnd');
	},

	_resize: function () {
		var that = this;

		clearTimeout(this.resizeTimeout);

		this.resizeTimeout = setTimeout(function () {
			that.refresh();
		}, this.options.resizePolling);
	},

	resetPosition: function (time) {
		var x = this.x,
			y = this.y;

		time = time || 0;

		if ( !this.hasHorizontalScroll || this.x > 0 ) {
			x = 0;
		} else if ( this.x < this.maxScrollX ) {
			x = this.maxScrollX;
		}

		if ( !this.hasVerticalScroll || this.y > 0 ) {
			y = 0;
		} else if ( this.y < this.maxScrollY ) {
			y = this.maxScrollY;
		}

		if ( x == this.x && y == this.y ) {
			return false;
		}

		this.scrollTo(x, y, time, this.options.bounceEasing);

		return true;
	},

	disable: function () {
		this.enabled = false;
	},

	enable: function () {
		this.enabled = true;
	},

	refresh: function () {
		var rf = this.wrapper.offsetHeight;		// Force reflow

		this.wrapperWidth	= this.wrapper.clientWidth;
		this.wrapperHeight	= this.wrapper.clientHeight;

/* REPLACE START: refresh */
	this.scrollerWidth	= Math.round(this.scroller.offsetWidth * this.scale);
	this.scrollerHeight	= Math.round(this.scroller.offsetHeight * this.scale);

	this.maxScrollX		= this.wrapperWidth - this.scrollerWidth;
	this.maxScrollY		= this.wrapperHeight - this.scrollerHeight;
/* REPLACE END: refresh */

		this.hasHorizontalScroll	= this.options.scrollX && this.maxScrollX < 0;
		this.hasVerticalScroll		= this.options.scrollY && this.maxScrollY < 0;

		if ( !this.hasHorizontalScroll ) {
			this.maxScrollX = 0;
			this.scrollerWidth = this.wrapperWidth;
		}

		if ( !this.hasVerticalScroll ) {
			this.maxScrollY = 0;
			this.scrollerHeight = this.wrapperHeight;
		}

		this.endTime = 0;
		this.directionX = 0;
		this.directionY = 0;

		this.wrapperOffset = utils.offset(this.wrapper);

		this._execEvent('refresh');

		this.resetPosition(this.options.bounceTime);

// INSERT POINT: _refresh

	},

	on: function (type, fn) {
		if ( !this._events[type] ) {
			this._events[type] = [];
		}

		this._events[type].push(fn);
	},

	off: function (type, fn) {
		if ( !this._events[type] ) {
			return;
		}

		var index = this._events[type].indexOf(fn);

		if ( index > -1 ) {
			this._events[type].splice(index, 1);
		}
	},

	_execEvent: function (type) {
		if ( !this._events[type] ) {
			return;
		}

		var i = 0,
			l = this._events[type].length;

		if ( !l ) {
			return;
		}

		for ( ; i < l; i++ ) {
			this._events[type][i].apply(this, [].slice.call(arguments, 1));
		}
	},

	scrollBy: function (x, y, time, easing) {
		x = this.x + x;
		y = this.y + y;
		time = time || 0;

		this.scrollTo(x, y, time, easing);
	},

	scrollTo: function (x, y, time, easing) {
		easing = easing || utils.ease.circular;

		this.isInTransition = this.options.useTransition && time > 0;

		if ( !time || (this.options.useTransition && easing.style) ) {
			this._transitionTimingFunction(easing.style);
			this._transitionTime(time);
			this._translate(x, y);
		} else {
			this._animate(x, y, time, easing.fn);
		}
	},

	scrollToElement: function (el, time, offsetX, offsetY, easing) {
		el = el.nodeType ? el : this.scroller.querySelector(el);

		if ( !el ) {
			return;
		}

		var pos = utils.offset(el);

		pos.left -= this.wrapperOffset.left;
		pos.top  -= this.wrapperOffset.top;

		// if offsetX/Y are true we center the element to the screen
		if ( offsetX === true ) {
			offsetX = Math.round(el.offsetWidth / 2 - this.wrapper.offsetWidth / 2);
		}
		if ( offsetY === true ) {
			offsetY = Math.round(el.offsetHeight / 2 - this.wrapper.offsetHeight / 2);
		}

		pos.left -= offsetX || 0;
		pos.top  -= offsetY || 0;

		pos.left = pos.left > 0 ? 0 : pos.left < this.maxScrollX ? this.maxScrollX : pos.left;
		pos.top  = pos.top  > 0 ? 0 : pos.top  < this.maxScrollY ? this.maxScrollY : pos.top;

		time = time === undefined || time === null || time === 'auto' ? Math.max(Math.abs(this.x-pos.left), Math.abs(this.y-pos.top)) : time;

		this.scrollTo(pos.left, pos.top, time, easing);
	},

	_transitionTime: function (time) {
		time = time || 0;

		this.scrollerStyle[utils.style.transitionDuration] = time + 'ms';

		if ( !time && utils.isBadAndroid ) {
			this.scrollerStyle[utils.style.transitionDuration] = '0.001s';
		}


		if ( this.indicators ) {
			for ( var i = this.indicators.length; i--; ) {
				this.indicators[i].transitionTime(time);
			}
		}


// INSERT POINT: _transitionTime

	},

	_transitionTimingFunction: function (easing) {
		this.scrollerStyle[utils.style.transitionTimingFunction] = easing;


		if ( this.indicators ) {
			for ( var i = this.indicators.length; i--; ) {
				this.indicators[i].transitionTimingFunction(easing);
			}
		}


// INSERT POINT: _transitionTimingFunction

	},

	_translate: function (x, y) {
		if ( this.options.useTransform ) {

/* REPLACE START: _translate */			this.scrollerStyle[utils.style.transform] = 'translate(' + x + 'px,' + y + 'px) scale(' + this.scale + ') ' + this.translateZ;/* REPLACE END: _translate */

		} else {
			x = Math.round(x);
			y = Math.round(y);
			this.scrollerStyle.left = x + 'px';
			this.scrollerStyle.top = y + 'px';
		}

		this.x = x;
		this.y = y;


	if ( this.indicators ) {
		for ( var i = this.indicators.length; i--; ) {
			this.indicators[i].updatePosition();
		}
	}


// INSERT POINT: _translate

	},

	_initEvents: function (remove) {
		var eventType = remove ? utils.removeEvent : utils.addEvent,
			target = this.options.bindToWrapper ? this.wrapper : window;

		eventType(window, 'orientationchange', this);
		eventType(window, 'resize', this);

		if ( this.options.click ) {
			eventType(this.wrapper, 'click', this, true);
		}

		if ( !this.options.disableMouse ) {
			eventType(this.wrapper, 'mousedown', this);
			eventType(target, 'mousemove', this);
			eventType(target, 'mousecancel', this);
			eventType(target, 'mouseup', this);
		}

		if ( utils.hasPointer && !this.options.disablePointer ) {
			eventType(this.wrapper, utils.prefixPointerEvent('pointerdown'), this);
			eventType(target, utils.prefixPointerEvent('pointermove'), this);
			eventType(target, utils.prefixPointerEvent('pointercancel'), this);
			eventType(target, utils.prefixPointerEvent('pointerup'), this);
		}

		if ( utils.hasTouch && !this.options.disableTouch ) {
			eventType(this.wrapper, 'touchstart', this);
			eventType(target, 'touchmove', this);
			eventType(target, 'touchcancel', this);
			eventType(target, 'touchend', this);
		}

		eventType(this.scroller, 'transitionend', this);
		eventType(this.scroller, 'webkitTransitionEnd', this);
		eventType(this.scroller, 'oTransitionEnd', this);
		eventType(this.scroller, 'MSTransitionEnd', this);
	},

	getComputedPosition: function () {
		var matrix = window.getComputedStyle(this.scroller, null),
			x, y;

		if ( this.options.useTransform ) {
			matrix = matrix[utils.style.transform].split(')')[0].split(', ');
			x = +(matrix[12] || matrix[4]);
			y = +(matrix[13] || matrix[5]);
		} else {
			x = +matrix.left.replace(/[^-\d.]/g, '');
			y = +matrix.top.replace(/[^-\d.]/g, '');
		}

		return { x: x, y: y };
	},

	_initIndicators: function () {
		var interactive = this.options.interactiveScrollbars,
			customStyle = typeof this.options.scrollbars != 'string',
			indicators = [],
			indicator;

		var that = this;

		this.indicators = [];

		if ( this.options.scrollbars ) {
			// Vertical scrollbar
			if ( this.options.scrollY ) {
				indicator = {
					el: createDefaultScrollbar('v', interactive, this.options.scrollbars),
					interactive: interactive,
					defaultScrollbars: true,
					customStyle: customStyle,
					resize: this.options.resizeScrollbars,
					shrink: this.options.shrinkScrollbars,
					fade: this.options.fadeScrollbars,
					listenX: false
				};

				this.wrapper.appendChild(indicator.el);
				indicators.push(indicator);
			}

			// Horizontal scrollbar
			if ( this.options.scrollX ) {
				indicator = {
					el: createDefaultScrollbar('h', interactive, this.options.scrollbars),
					interactive: interactive,
					defaultScrollbars: true,
					customStyle: customStyle,
					resize: this.options.resizeScrollbars,
					shrink: this.options.shrinkScrollbars,
					fade: this.options.fadeScrollbars,
					listenY: false
				};

				this.wrapper.appendChild(indicator.el);
				indicators.push(indicator);
			}
		}

		if ( this.options.indicators ) {
			// TODO: check concat compatibility
			indicators = indicators.concat(this.options.indicators);
		}

		for ( var i = indicators.length; i--; ) {
			this.indicators.push( new Indicator(this, indicators[i]) );
		}

		// TODO: check if we can use array.map (wide compatibility and performance issues)
		function _indicatorsMap (fn) {
			for ( var i = that.indicators.length; i--; ) {
				fn.call(that.indicators[i]);
			}
		}

		if ( this.options.fadeScrollbars ) {
			this.on('scrollEnd', function () {
				_indicatorsMap(function () {
					this.fade();
				});
			});

			this.on('scrollCancel', function () {
				_indicatorsMap(function () {
					this.fade();
				});
			});

			this.on('scrollStart', function () {
				_indicatorsMap(function () {
					this.fade(1);
				});
			});

			this.on('beforeScrollStart', function () {
				_indicatorsMap(function () {
					this.fade(1, true);
				});
			});
		}


		this.on('refresh', function () {
			_indicatorsMap(function () {
				this.refresh();
			});
		});

		this.on('destroy', function () {
			_indicatorsMap(function () {
				this.destroy();
			});

			delete this.indicators;
		});
	},

	_initZoom: function () {
		this.scrollerStyle[utils.style.transformOrigin] = '0 0';
	},

	_zoomStart: function (e) {
		var c1 = Math.abs( e.touches[0].pageX - e.touches[1].pageX ),
			c2 = Math.abs( e.touches[0].pageY - e.touches[1].pageY );

		this.touchesDistanceStart = Math.sqrt(c1 * c1 + c2 * c2);
		this.startScale = this.scale;

		this.originX = Math.abs(e.touches[0].pageX + e.touches[1].pageX) / 2 + this.wrapperOffset.left - this.x;
		this.originY = Math.abs(e.touches[0].pageY + e.touches[1].pageY) / 2 + this.wrapperOffset.top - this.y;

		this._execEvent('zoomStart');
	},

	_zoom: function (e) {
		if ( !this.enabled || utils.eventType[e.type] !== this.initiated ) {
			return;
		}

		if ( this.options.preventDefault ) {
			e.preventDefault();
		}

		var c1 = Math.abs( e.touches[0].pageX - e.touches[1].pageX ),
			c2 = Math.abs( e.touches[0].pageY - e.touches[1].pageY ),
			distance = Math.sqrt( c1 * c1 + c2 * c2 ),
			scale = 1 / this.touchesDistanceStart * distance * this.startScale,
			lastScale,
			x, y;

		this.scaled = true;

		if ( scale < this.options.zoomMin ) {
			scale = 0.5 * this.options.zoomMin * Math.pow(2.0, scale / this.options.zoomMin);
		} else if ( scale > this.options.zoomMax ) {
			scale = 2.0 * this.options.zoomMax * Math.pow(0.5, this.options.zoomMax / scale);
		}

		lastScale = scale / this.startScale;
		x = this.originX - this.originX * lastScale + this.startX;
		y = this.originY - this.originY * lastScale + this.startY;

		this.scale = scale;

		this.scrollTo(x, y, 0);
	},

	_zoomEnd: function (e) {
		if ( !this.enabled || utils.eventType[e.type] !== this.initiated ) {
			return;
		}

		if ( this.options.preventDefault ) {
			e.preventDefault();
		}

		var newX, newY,
			lastScale;

		this.isInTransition = 0;
		this.initiated = 0;

		if ( this.scale > this.options.zoomMax ) {
			this.scale = this.options.zoomMax;
		} else if ( this.scale < this.options.zoomMin ) {
			this.scale = this.options.zoomMin;
		}

		// Update boundaries
		this.refresh();

		lastScale = this.scale / this.startScale;

		newX = this.originX - this.originX * lastScale + this.startX;
		newY = this.originY - this.originY * lastScale + this.startY;

		if ( newX > 0 ) {
			newX = 0;
		} else if ( newX < this.maxScrollX ) {
			newX = this.maxScrollX;
		}

		if ( newY > 0 ) {
			newY = 0;
		} else if ( newY < this.maxScrollY ) {
			newY = this.maxScrollY;
		}

		this.scrollTo(newX, newY, this.options.bounceTime);

		this.scaled = false;

		this._execEvent('zoomEnd');
	},

	zoom: function (scale, x, y, time) {
		if ( scale < this.options.zoomMin ) {
			scale = this.options.zoomMin;
		} else if ( scale > this.options.zoomMax ) {
			scale = this.options.zoomMax;
		}

		if ( scale == this.scale ) {
			return;
		}

		var relScale = scale / this.scale;

		x = x === undefined ? this.wrapperWidth / 2 - this.wrapperOffset.left : x;
		y = y === undefined ? this.wrapperHeight / 2 - this.wrapperOffset.top : y;
		time = time === undefined ? 300 : time;

		x = x + this.wrapperOffset.left - this.x;
		y = y + this.wrapperOffset.top - this.y;

		x = x - x * relScale + this.x;
		y = y - y * relScale + this.y;

		this.scale = scale;

		this.refresh();		// update boundaries

		if ( x > 0 ) {
			x = 0;
		} else if ( x < this.maxScrollX ) {
			x = this.maxScrollX;
		}

		if ( y > 0 ) {
			y = 0;
		} else if ( y < this.maxScrollY ) {
			y = this.maxScrollY;
		}

		this.scrollTo(x, y, time);
	},

	_wheelZoom: function (e) {
		var wheelDeltaY,
			deltaScale,
			that = this;

		// Execute the zoomEnd event after 400ms the wheel stopped scrolling
		clearTimeout(this.wheelTimeout);
		this.wheelTimeout = setTimeout(function () {
			that._execEvent('zoomEnd');
		}, 400);

		if ( 'deltaY' in e ) {
			wheelDeltaY = -e.deltaY / Math.abs(e.deltaY);
		} else if ('wheelDeltaY' in e) {
			wheelDeltaY = e.wheelDeltaY / Math.abs(e.wheelDeltaY);
		} else if('wheelDelta' in e) {
			wheelDeltaY = e.wheelDelta / Math.abs(e.wheelDelta);
		} else if ('detail' in e) {
			wheelDeltaY = -e.detail / Math.abs(e.detail);
		} else {
			return;
		}

		if (isNaN(wheelDeltaY)) wheelDeltaY = 0;
		deltaScale = this.scale + wheelDeltaY * .01;

		this.zoom(deltaScale, e.pageX, e.pageY, 0);

		e.preventDefault();
		e.stopPropagation();
	},

	_initWheel: function () {
		utils.addEvent(this.wrapper, 'wheel', this);
		utils.addEvent(this.wrapper, 'mousewheel', this);
		utils.addEvent(this.wrapper, 'DOMMouseScroll', this);

		this.on('destroy', function () {
			utils.removeEvent(this.wrapper, 'wheel', this);
			utils.removeEvent(this.wrapper, 'mousewheel', this);
			utils.removeEvent(this.wrapper, 'DOMMouseScroll', this);
		});
	},

	_wheel: function (e) {
		if ( !this.enabled ) {
			return;
		}

		e.preventDefault();
		e.stopPropagation();

		var wheelDeltaX, wheelDeltaY,
			newX, newY,
			that = this;

		if ( this.wheelTimeout === undefined ) {
			that._execEvent('scrollStart');
		}

		// Execute the scrollEnd event after 400ms the wheel stopped scrolling
		clearTimeout(this.wheelTimeout);
		this.wheelTimeout = setTimeout(function () {
			that._execEvent('scrollEnd');
			that.wheelTimeout = undefined;
		}, 400);

		if ( 'deltaX' in e ) {
			if (e.deltaMode === 1) {
				wheelDeltaX = -e.deltaX * this.options.mouseWheelSpeed;
				wheelDeltaY = -e.deltaY * this.options.mouseWheelSpeed;
			} else {
				wheelDeltaX = -e.deltaX;
				wheelDeltaY = -e.deltaY;
			}
		} else if ( 'wheelDeltaX' in e ) {
			wheelDeltaX = e.wheelDeltaX / 120 * this.options.mouseWheelSpeed;
			wheelDeltaY = e.wheelDeltaY / 120 * this.options.mouseWheelSpeed;
		} else if ( 'wheelDelta' in e ) {
			wheelDeltaX = wheelDeltaY = e.wheelDelta / 120 * this.options.mouseWheelSpeed;
		} else if ( 'detail' in e ) {
			wheelDeltaX = wheelDeltaY = -e.detail / 3 * this.options.mouseWheelSpeed;
		} else {
			return;
		}

		wheelDeltaX *= this.options.invertWheelDirection;
		wheelDeltaY *= this.options.invertWheelDirection;

		if ( !this.hasVerticalScroll ) {
			wheelDeltaX = wheelDeltaY;
			wheelDeltaY = 0;
		}

		if ( this.options.snap ) {
			newX = this.currentPage.pageX;
			newY = this.currentPage.pageY;

			if ( wheelDeltaX > 0 ) {
				newX--;
			} else if ( wheelDeltaX < 0 ) {
				newX++;
			}

			if ( wheelDeltaY > 0 ) {
				newY--;
			} else if ( wheelDeltaY < 0 ) {
				newY++;
			}

			this.goToPage(newX, newY);

			return;
		}

		newX = this.x + Math.round(this.hasHorizontalScroll ? wheelDeltaX : 0);
		newY = this.y + Math.round(this.hasVerticalScroll ? wheelDeltaY : 0);

		if ( newX > 0 ) {
			newX = 0;
		} else if ( newX < this.maxScrollX ) {
			newX = this.maxScrollX;
		}

		if ( newY > 0 ) {
			newY = 0;
		} else if ( newY < this.maxScrollY ) {
			newY = this.maxScrollY;
		}

		this.scrollTo(newX, newY, 0);

// INSERT POINT: _wheel
	},

	_initSnap: function () {
		this.currentPage = {};

		if ( typeof this.options.snap == 'string' ) {
			this.options.snap = this.scroller.querySelectorAll(this.options.snap);
		}

		this.on('refresh', function () {
			var i = 0, l,
				m = 0, n,
				cx, cy,
				x = 0, y,
				stepX = this.options.snapStepX || this.wrapperWidth,
				stepY = this.options.snapStepY || this.wrapperHeight,
				el;

			this.pages = [];

			if ( !this.wrapperWidth || !this.wrapperHeight || !this.scrollerWidth || !this.scrollerHeight ) {
				return;
			}

			if ( this.options.snap === true ) {
				cx = Math.round( stepX / 2 );
				cy = Math.round( stepY / 2 );

				while ( x > -this.scrollerWidth ) {
					this.pages[i] = [];
					l = 0;
					y = 0;

					while ( y > -this.scrollerHeight ) {
						this.pages[i][l] = {
							x: Math.max(x, this.maxScrollX),
							y: Math.max(y, this.maxScrollY),
							width: stepX,
							height: stepY,
							cx: x - cx,
							cy: y - cy
						};

						y -= stepY;
						l++;
					}

					x -= stepX;
					i++;
				}
			} else {
				el = this.options.snap;
				l = el.length;
				n = -1;

				for ( ; i < l; i++ ) {
					if ( i === 0 || el[i].offsetLeft <= el[i-1].offsetLeft ) {
						m = 0;
						n++;
					}

					if ( !this.pages[m] ) {
						this.pages[m] = [];
					}

					x = Math.max(-el[i].offsetLeft, this.maxScrollX);
					y = Math.max(-el[i].offsetTop, this.maxScrollY);
					cx = x - Math.round(el[i].offsetWidth / 2);
					cy = y - Math.round(el[i].offsetHeight / 2);

					this.pages[m][n] = {
						x: x,
						y: y,
						width: el[i].offsetWidth,
						height: el[i].offsetHeight,
						cx: cx,
						cy: cy
					};

					if ( x > this.maxScrollX ) {
						m++;
					}
				}
			}

			this.goToPage(this.currentPage.pageX || 0, this.currentPage.pageY || 0, 0);

			// Update snap threshold if needed
			if ( this.options.snapThreshold % 1 === 0 ) {
				this.snapThresholdX = this.options.snapThreshold;
				this.snapThresholdY = this.options.snapThreshold;
			} else {
				this.snapThresholdX = Math.round(this.pages[this.currentPage.pageX][this.currentPage.pageY].width * this.options.snapThreshold);
				this.snapThresholdY = Math.round(this.pages[this.currentPage.pageX][this.currentPage.pageY].height * this.options.snapThreshold);
			}
		});

		this.on('flick', function () {
			var time = this.options.snapSpeed || Math.max(
					Math.max(
						Math.min(Math.abs(this.x - this.startX), 1000),
						Math.min(Math.abs(this.y - this.startY), 1000)
					), 300);

			this.goToPage(
				this.currentPage.pageX + this.directionX,
				this.currentPage.pageY + this.directionY,
				time
			);
		});
	},

	_nearestSnap: function (x, y) {
		if ( !this.pages.length ) {
			return { x: 0, y: 0, pageX: 0, pageY: 0 };
		}

		var i = 0,
			l = this.pages.length,
			m = 0;

		// Check if we exceeded the snap threshold
		if ( Math.abs(x - this.absStartX) < this.snapThresholdX &&
			Math.abs(y - this.absStartY) < this.snapThresholdY ) {
			return this.currentPage;
		}

		if ( x > 0 ) {
			x = 0;
		} else if ( x < this.maxScrollX ) {
			x = this.maxScrollX;
		}

		if ( y > 0 ) {
			y = 0;
		} else if ( y < this.maxScrollY ) {
			y = this.maxScrollY;
		}

		for ( ; i < l; i++ ) {
			if ( x >= this.pages[i][0].cx ) {
				x = this.pages[i][0].x;
				break;
			}
		}

		l = this.pages[i].length;

		for ( ; m < l; m++ ) {
			if ( y >= this.pages[0][m].cy ) {
				y = this.pages[0][m].y;
				break;
			}
		}

		if ( i == this.currentPage.pageX ) {
			i += this.directionX;

			if ( i < 0 ) {
				i = 0;
			} else if ( i >= this.pages.length ) {
				i = this.pages.length - 1;
			}

			x = this.pages[i][0].x;
		}

		if ( m == this.currentPage.pageY ) {
			m += this.directionY;

			if ( m < 0 ) {
				m = 0;
			} else if ( m >= this.pages[0].length ) {
				m = this.pages[0].length - 1;
			}

			y = this.pages[0][m].y;
		}

		return {
			x: x,
			y: y,
			pageX: i,
			pageY: m
		};
	},

	goToPage: function (x, y, time, easing) {
		easing = easing || this.options.bounceEasing;

		if ( x >= this.pages.length ) {
			x = this.pages.length - 1;
		} else if ( x < 0 ) {
			x = 0;
		}

		if ( y >= this.pages[x].length ) {
			y = this.pages[x].length - 1;
		} else if ( y < 0 ) {
			y = 0;
		}

		var posX = this.pages[x][y].x,
			posY = this.pages[x][y].y;

		time = time === undefined ? this.options.snapSpeed || Math.max(
			Math.max(
				Math.min(Math.abs(posX - this.x), 1000),
				Math.min(Math.abs(posY - this.y), 1000)
			), 300) : time;

		this.currentPage = {
			x: posX,
			y: posY,
			pageX: x,
			pageY: y
		};

		this.scrollTo(posX, posY, time, easing);
	},

	next: function (time, easing) {
		var x = this.currentPage.pageX,
			y = this.currentPage.pageY;

		x++;

		if ( x >= this.pages.length && this.hasVerticalScroll ) {
			x = 0;
			y++;
		}

		this.goToPage(x, y, time, easing);
	},

	prev: function (time, easing) {
		var x = this.currentPage.pageX,
			y = this.currentPage.pageY;

		x--;

		if ( x < 0 && this.hasVerticalScroll ) {
			x = 0;
			y--;
		}

		this.goToPage(x, y, time, easing);
	},

	_initKeys: function (e) {
		// default key bindings
		var keys = {
			pageUp: 33,
			pageDown: 34,
			end: 35,
			home: 36,
			left: 37,
			up: 38,
			right: 39,
			down: 40
		};
		var i;

		// if you give me characters I give you keycode
		if ( typeof this.options.keyBindings == 'object' ) {
			for ( i in this.options.keyBindings ) {
				if ( typeof this.options.keyBindings[i] == 'string' ) {
					this.options.keyBindings[i] = this.options.keyBindings[i].toUpperCase().charCodeAt(0);
				}
			}
		} else {
			this.options.keyBindings = {};
		}

		for ( i in keys ) {
			this.options.keyBindings[i] = this.options.keyBindings[i] || keys[i];
		}

		utils.addEvent(window, 'keydown', this);

		this.on('destroy', function () {
			utils.removeEvent(window, 'keydown', this);
		});
	},

	_key: function (e) {
		if ( !this.enabled ) {
			return;
		}

		var snap = this.options.snap,	// we are using this alot, better to cache it
			newX = snap ? this.currentPage.pageX : this.x,
			newY = snap ? this.currentPage.pageY : this.y,
			now = utils.getTime(),
			prevTime = this.keyTime || 0,
			acceleration = 0.250,
			pos;

		if ( this.options.useTransition && this.isInTransition ) {
			pos = this.getComputedPosition();

			this._translate(Math.round(pos.x), Math.round(pos.y));
			this.isInTransition = false;
		}

		this.keyAcceleration = now - prevTime < 200 ? Math.min(this.keyAcceleration + acceleration, 50) : 0;

		switch ( e.keyCode ) {
			case this.options.keyBindings.pageUp:
				if ( this.hasHorizontalScroll && !this.hasVerticalScroll ) {
					newX += snap ? 1 : this.wrapperWidth;
				} else {
					newY += snap ? 1 : this.wrapperHeight;
				}
				break;
			case this.options.keyBindings.pageDown:
				if ( this.hasHorizontalScroll && !this.hasVerticalScroll ) {
					newX -= snap ? 1 : this.wrapperWidth;
				} else {
					newY -= snap ? 1 : this.wrapperHeight;
				}
				break;
			case this.options.keyBindings.end:
				newX = snap ? this.pages.length-1 : this.maxScrollX;
				newY = snap ? this.pages[0].length-1 : this.maxScrollY;
				break;
			case this.options.keyBindings.home:
				newX = 0;
				newY = 0;
				break;
			case this.options.keyBindings.left:
				newX += snap ? -1 : 5 + this.keyAcceleration>>0;
				break;
			case this.options.keyBindings.up:
				newY += snap ? 1 : 5 + this.keyAcceleration>>0;
				break;
			case this.options.keyBindings.right:
				newX -= snap ? -1 : 5 + this.keyAcceleration>>0;
				break;
			case this.options.keyBindings.down:
				newY -= snap ? 1 : 5 + this.keyAcceleration>>0;
				break;
			default:
				return;
		}

		if ( snap ) {
			this.goToPage(newX, newY);
			return;
		}

		if ( newX > 0 ) {
			newX = 0;
			this.keyAcceleration = 0;
		} else if ( newX < this.maxScrollX ) {
			newX = this.maxScrollX;
			this.keyAcceleration = 0;
		}

		if ( newY > 0 ) {
			newY = 0;
			this.keyAcceleration = 0;
		} else if ( newY < this.maxScrollY ) {
			newY = this.maxScrollY;
			this.keyAcceleration = 0;
		}

		this.scrollTo(newX, newY, 0);

		this.keyTime = now;
	},

	_animate: function (destX, destY, duration, easingFn) {
		var that = this,
			startX = this.x,
			startY = this.y,
			startTime = utils.getTime(),
			destTime = startTime + duration;

		function step () {
			var now = utils.getTime(),
				newX, newY,
				easing;

			if ( now >= destTime ) {
				that.isAnimating = false;
				that._translate(destX, destY);

				if ( !that.resetPosition(that.options.bounceTime) ) {
					that._execEvent('scrollEnd');
				}

				return;
			}

			now = ( now - startTime ) / duration;
			easing = easingFn(now);
			newX = ( destX - startX ) * easing + startX;
			newY = ( destY - startY ) * easing + startY;
			that._translate(newX, newY);

			if ( that.isAnimating ) {
				rAF(step);
			}
		}

		this.isAnimating = true;
		step();
	},
	handleEvent: function (e) {
		switch ( e.type ) {
			case 'touchstart':
			case 'pointerdown':
			case 'MSPointerDown':
			case 'mousedown':
				this._start(e);

				if ( this.options.zoom && e.touches && e.touches.length > 1 ) {
					this._zoomStart(e);
				}
				break;
			case 'touchmove':
			case 'pointermove':
			case 'MSPointerMove':
			case 'mousemove':
				if ( this.options.zoom && e.touches && e.touches[1] ) {
					this._zoom(e);
					return;
				}
				this._move(e);
				break;
			case 'touchend':
			case 'pointerup':
			case 'MSPointerUp':
			case 'mouseup':
			case 'touchcancel':
			case 'pointercancel':
			case 'MSPointerCancel':
			case 'mousecancel':
				if ( this.scaled ) {
					this._zoomEnd(e);
					return;
				}
				this._end(e);
				break;
			case 'orientationchange':
			case 'resize':
				this._resize();
				break;
			case 'transitionend':
			case 'webkitTransitionEnd':
			case 'oTransitionEnd':
			case 'MSTransitionEnd':
				this._transitionEnd(e);
				break;
			case 'wheel':
			case 'DOMMouseScroll':
			case 'mousewheel':
				if ( this.options.wheelAction == 'zoom' ) {
					this._wheelZoom(e);
					return;
				}
				this._wheel(e);
				break;
			case 'keydown':
				this._key(e);
				break;
		}
	}

};
function createDefaultScrollbar (direction, interactive, type) {
	var scrollbar = document.createElement('div'),
		indicator = document.createElement('div');

	if ( type === true ) {
		scrollbar.style.cssText = 'position:absolute;z-index:9999';
		indicator.style.cssText = '-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;position:absolute;background:rgba(0,0,0,0.5);border:1px solid rgba(255,255,255,0.9);border-radius:3px';
	}

	indicator.className = 'iScrollIndicator';

	if ( direction == 'h' ) {
		if ( type === true ) {
			scrollbar.style.cssText += ';height:7px;left:2px;right:2px;bottom:0';
			indicator.style.height = '100%';
		}
		scrollbar.className = 'iScrollHorizontalScrollbar';
	} else {
		if ( type === true ) {
			scrollbar.style.cssText += ';width:7px;bottom:2px;top:2px;right:1px';
			indicator.style.width = '100%';
		}
		scrollbar.className = 'iScrollVerticalScrollbar';
	}

	scrollbar.style.cssText += ';overflow:hidden';

	if ( !interactive ) {
		scrollbar.style.pointerEvents = 'none';
	}

	scrollbar.appendChild(indicator);

	return scrollbar;
}

function Indicator (scroller, options) {
	this.wrapper = typeof options.el == 'string' ? document.querySelector(options.el) : options.el;
	this.wrapperStyle = this.wrapper.style;
	this.indicator = this.wrapper.children[0];
	this.indicatorStyle = this.indicator.style;
	this.scroller = scroller;

	this.options = {
		listenX: true,
		listenY: true,
		interactive: false,
		resize: true,
		defaultScrollbars: false,
		shrink: false,
		fade: false,
		speedRatioX: 0,
		speedRatioY: 0
	};

	for ( var i in options ) {
		this.options[i] = options[i];
	}

	this.sizeRatioX = 1;
	this.sizeRatioY = 1;
	this.maxPosX = 0;
	this.maxPosY = 0;

	if ( this.options.interactive ) {
		if ( !this.options.disableTouch ) {
			utils.addEvent(this.indicator, 'touchstart', this);
			utils.addEvent(window, 'touchend', this);
		}
		if ( !this.options.disablePointer ) {
			utils.addEvent(this.indicator, utils.prefixPointerEvent('pointerdown'), this);
			utils.addEvent(window, utils.prefixPointerEvent('pointerup'), this);
		}
		if ( !this.options.disableMouse ) {
			utils.addEvent(this.indicator, 'mousedown', this);
			utils.addEvent(window, 'mouseup', this);
		}
	}

	if ( this.options.fade ) {
		this.wrapperStyle[utils.style.transform] = this.scroller.translateZ;
		this.wrapperStyle[utils.style.transitionDuration] = utils.isBadAndroid ? '0.001s' : '0ms';
		this.wrapperStyle.opacity = '0';
	}
}

Indicator.prototype = {
	handleEvent: function (e) {
		switch ( e.type ) {
			case 'touchstart':
			case 'pointerdown':
			case 'MSPointerDown':
			case 'mousedown':
				this._start(e);
				break;
			case 'touchmove':
			case 'pointermove':
			case 'MSPointerMove':
			case 'mousemove':
				this._move(e);
				break;
			case 'touchend':
			case 'pointerup':
			case 'MSPointerUp':
			case 'mouseup':
			case 'touchcancel':
			case 'pointercancel':
			case 'MSPointerCancel':
			case 'mousecancel':
				this._end(e);
				break;
		}
	},

	destroy: function () {
		if ( this.options.interactive ) {
			utils.removeEvent(this.indicator, 'touchstart', this);
			utils.removeEvent(this.indicator, utils.prefixPointerEvent('pointerdown'), this);
			utils.removeEvent(this.indicator, 'mousedown', this);

			utils.removeEvent(window, 'touchmove', this);
			utils.removeEvent(window, utils.prefixPointerEvent('pointermove'), this);
			utils.removeEvent(window, 'mousemove', this);

			utils.removeEvent(window, 'touchend', this);
			utils.removeEvent(window, utils.prefixPointerEvent('pointerup'), this);
			utils.removeEvent(window, 'mouseup', this);
		}

		if ( this.options.defaultScrollbars ) {
			this.wrapper.parentNode.removeChild(this.wrapper);
		}
	},

	_start: function (e) {
		var point = e.touches ? e.touches[0] : e;

		e.preventDefault();
		e.stopPropagation();

		this.transitionTime();

		this.initiated = true;
		this.moved = false;
		this.lastPointX	= point.pageX;
		this.lastPointY	= point.pageY;

		this.startTime	= utils.getTime();

		if ( !this.options.disableTouch ) {
			utils.addEvent(window, 'touchmove', this);
		}
		if ( !this.options.disablePointer ) {
			utils.addEvent(window, utils.prefixPointerEvent('pointermove'), this);
		}
		if ( !this.options.disableMouse ) {
			utils.addEvent(window, 'mousemove', this);
		}

		this.scroller._execEvent('beforeScrollStart');
	},

	_move: function (e) {
		var point = e.touches ? e.touches[0] : e,
			deltaX, deltaY,
			newX, newY,
			timestamp = utils.getTime();

		if ( !this.moved ) {
			this.scroller._execEvent('scrollStart');
		}

		this.moved = true;

		deltaX = point.pageX - this.lastPointX;
		this.lastPointX = point.pageX;

		deltaY = point.pageY - this.lastPointY;
		this.lastPointY = point.pageY;

		newX = this.x + deltaX;
		newY = this.y + deltaY;

		this._pos(newX, newY);

// INSERT POINT: indicator._move

		e.preventDefault();
		e.stopPropagation();
	},

	_end: function (e) {
		if ( !this.initiated ) {
			return;
		}

		this.initiated = false;

		e.preventDefault();
		e.stopPropagation();

		utils.removeEvent(window, 'touchmove', this);
		utils.removeEvent(window, utils.prefixPointerEvent('pointermove'), this);
		utils.removeEvent(window, 'mousemove', this);

		if ( this.scroller.options.snap ) {
			var snap = this.scroller._nearestSnap(this.scroller.x, this.scroller.y);

			var time = this.options.snapSpeed || Math.max(
					Math.max(
						Math.min(Math.abs(this.scroller.x - snap.x), 1000),
						Math.min(Math.abs(this.scroller.y - snap.y), 1000)
					), 300);

			if ( this.scroller.x != snap.x || this.scroller.y != snap.y ) {
				this.scroller.directionX = 0;
				this.scroller.directionY = 0;
				this.scroller.currentPage = snap;
				this.scroller.scrollTo(snap.x, snap.y, time, this.scroller.options.bounceEasing);
			}
		}

		if ( this.moved ) {
			this.scroller._execEvent('scrollEnd');
		}
	},

	transitionTime: function (time) {
		time = time || 0;
		this.indicatorStyle[utils.style.transitionDuration] = time + 'ms';

		if ( !time && utils.isBadAndroid ) {
			this.indicatorStyle[utils.style.transitionDuration] = '0.001s';
		}
	},

	transitionTimingFunction: function (easing) {
		this.indicatorStyle[utils.style.transitionTimingFunction] = easing;
	},

	refresh: function () {
		this.transitionTime();

		if ( this.options.listenX && !this.options.listenY ) {
			this.indicatorStyle.display = this.scroller.hasHorizontalScroll ? 'block' : 'none';
		} else if ( this.options.listenY && !this.options.listenX ) {
			this.indicatorStyle.display = this.scroller.hasVerticalScroll ? 'block' : 'none';
		} else {
			this.indicatorStyle.display = this.scroller.hasHorizontalScroll || this.scroller.hasVerticalScroll ? 'block' : 'none';
		}

		if ( this.scroller.hasHorizontalScroll && this.scroller.hasVerticalScroll ) {
			utils.addClass(this.wrapper, 'iScrollBothScrollbars');
			utils.removeClass(this.wrapper, 'iScrollLoneScrollbar');

			if ( this.options.defaultScrollbars && this.options.customStyle ) {
				if ( this.options.listenX ) {
					this.wrapper.style.right = '8px';
				} else {
					this.wrapper.style.bottom = '8px';
				}
			}
		} else {
			utils.removeClass(this.wrapper, 'iScrollBothScrollbars');
			utils.addClass(this.wrapper, 'iScrollLoneScrollbar');

			if ( this.options.defaultScrollbars && this.options.customStyle ) {
				if ( this.options.listenX ) {
					this.wrapper.style.right = '2px';
				} else {
					this.wrapper.style.bottom = '2px';
				}
			}
		}

		var r = this.wrapper.offsetHeight;	// force refresh

		if ( this.options.listenX ) {
			this.wrapperWidth = this.wrapper.clientWidth;
			if ( this.options.resize ) {
				this.indicatorWidth = Math.max(Math.round(this.wrapperWidth * this.wrapperWidth / (this.scroller.scrollerWidth || this.wrapperWidth || 1)), 8);
				this.indicatorStyle.width = this.indicatorWidth + 'px';
			} else {
				this.indicatorWidth = this.indicator.clientWidth;
			}

			this.maxPosX = this.wrapperWidth - this.indicatorWidth;

			if ( this.options.shrink == 'clip' ) {
				this.minBoundaryX = -this.indicatorWidth + 8;
				this.maxBoundaryX = this.wrapperWidth - 8;
			} else {
				this.minBoundaryX = 0;
				this.maxBoundaryX = this.maxPosX;
			}

			this.sizeRatioX = this.options.speedRatioX || (this.scroller.maxScrollX && (this.maxPosX / this.scroller.maxScrollX));
		}

		if ( this.options.listenY ) {
			this.wrapperHeight = this.wrapper.clientHeight;
			if ( this.options.resize ) {
				this.indicatorHeight = Math.max(Math.round(this.wrapperHeight * this.wrapperHeight / (this.scroller.scrollerHeight || this.wrapperHeight || 1)), 8);
				this.indicatorStyle.height = this.indicatorHeight + 'px';
			} else {
				this.indicatorHeight = this.indicator.clientHeight;
			}

			this.maxPosY = this.wrapperHeight - this.indicatorHeight;

			if ( this.options.shrink == 'clip' ) {
				this.minBoundaryY = -this.indicatorHeight + 8;
				this.maxBoundaryY = this.wrapperHeight - 8;
			} else {
				this.minBoundaryY = 0;
				this.maxBoundaryY = this.maxPosY;
			}

			this.maxPosY = this.wrapperHeight - this.indicatorHeight;
			this.sizeRatioY = this.options.speedRatioY || (this.scroller.maxScrollY && (this.maxPosY / this.scroller.maxScrollY));
		}

		this.updatePosition();
	},

	updatePosition: function () {
		var x = this.options.listenX && Math.round(this.sizeRatioX * this.scroller.x) || 0,
			y = this.options.listenY && Math.round(this.sizeRatioY * this.scroller.y) || 0;

		if ( !this.options.ignoreBoundaries ) {
			if ( x < this.minBoundaryX ) {
				if ( this.options.shrink == 'scale' ) {
					this.width = Math.max(this.indicatorWidth + x, 8);
					this.indicatorStyle.width = this.width + 'px';
				}
				x = this.minBoundaryX;
			} else if ( x > this.maxBoundaryX ) {
				if ( this.options.shrink == 'scale' ) {
					this.width = Math.max(this.indicatorWidth - (x - this.maxPosX), 8);
					this.indicatorStyle.width = this.width + 'px';
					x = this.maxPosX + this.indicatorWidth - this.width;
				} else {
					x = this.maxBoundaryX;
				}
			} else if ( this.options.shrink == 'scale' && this.width != this.indicatorWidth ) {
				this.width = this.indicatorWidth;
				this.indicatorStyle.width = this.width + 'px';
			}

			if ( y < this.minBoundaryY ) {
				if ( this.options.shrink == 'scale' ) {
					this.height = Math.max(this.indicatorHeight + y * 3, 8);
					this.indicatorStyle.height = this.height + 'px';
				}
				y = this.minBoundaryY;
			} else if ( y > this.maxBoundaryY ) {
				if ( this.options.shrink == 'scale' ) {
					this.height = Math.max(this.indicatorHeight - (y - this.maxPosY) * 3, 8);
					this.indicatorStyle.height = this.height + 'px';
					y = this.maxPosY + this.indicatorHeight - this.height;
				} else {
					y = this.maxBoundaryY;
				}
			} else if ( this.options.shrink == 'scale' && this.height != this.indicatorHeight ) {
				this.height = this.indicatorHeight;
				this.indicatorStyle.height = this.height + 'px';
			}
		}

		this.x = x;
		this.y = y;

		if ( this.scroller.options.useTransform ) {
			this.indicatorStyle[utils.style.transform] = 'translate(' + x + 'px,' + y + 'px)' + this.scroller.translateZ;
		} else {
			this.indicatorStyle.left = x + 'px';
			this.indicatorStyle.top = y + 'px';
		}
	},

	_pos: function (x, y) {
		if ( x < 0 ) {
			x = 0;
		} else if ( x > this.maxPosX ) {
			x = this.maxPosX;
		}

		if ( y < 0 ) {
			y = 0;
		} else if ( y > this.maxPosY ) {
			y = this.maxPosY;
		}

		x = this.options.listenX ? Math.round(x / this.sizeRatioX) : this.scroller.x;
		y = this.options.listenY ? Math.round(y / this.sizeRatioY) : this.scroller.y;

		this.scroller.scrollTo(x, y);
	},

	fade: function (val, hold) {
		if ( hold && !this.visible ) {
			return;
		}

		clearTimeout(this.fadeTimeout);
		this.fadeTimeout = null;

		var time = val ? 250 : 500,
			delay = val ? 0 : 300;

		val = val ? '1' : '0';

		this.wrapperStyle[utils.style.transitionDuration] = time + 'ms';

		this.fadeTimeout = setTimeout((function (val) {
			this.wrapperStyle.opacity = val;
			this.visible = +val;
		}).bind(this, val), delay);
	}
};

IScroll.utils = utils;

if ( typeof module != 'undefined' && module.exports ) {
	module.exports = IScroll;
} else {
	window.IScroll = IScroll;
}

})(window, document, Math);

hammer.js

/*! Hammer.JS - v2.0.4 - 2014-09-28
 * http://hammerjs.github.io/
 *
 * Copyright (c) 2014 Jorik Tangelder;
 * Licensed under the MIT license */
(function(window, document, exportName, undefined) {
  'use strict';

var VENDOR_PREFIXES = ['', 'webkit', 'moz', 'MS', 'ms', 'o'];
var TEST_ELEMENT = document.createElement('div');

var TYPE_FUNCTION = 'function';

var round = Math.round;
var abs = Math.abs;
var now = Date.now;

/**
 * set a timeout with a given scope
 * @param {Function} fn
 * @param {Number} timeout
 * @param {Object} context
 * @returns {number}
 */
function setTimeoutContext(fn, timeout, context) {
    return setTimeout(bindFn(fn, context), timeout);
}

/**
 * if the argument is an array, we want to execute the fn on each entry
 * if it aint an array we don't want to do a thing.
 * this is used by all the methods that accept a single and array argument.
 * @param {*|Array} arg
 * @param {String} fn
 * @param {Object} [context]
 * @returns {Boolean}
 */
function invokeArrayArg(arg, fn, context) {
    if (Array.isArray(arg)) {
        each(arg, context[fn], context);
        return true;
    }
    return false;
}

/**
 * walk objects and arrays
 * @param {Object} obj
 * @param {Function} iterator
 * @param {Object} context
 */
function each(obj, iterator, context) {
    var i;

    if (!obj) {
        return;
    }

    if (obj.forEach) {
        obj.forEach(iterator, context);
    } else if (obj.length !== undefined) {
        i = 0;
        while (i < obj.length) {
            iterator.call(context, obj[i], i, obj);
            i++;
        }
    } else {
        for (i in obj) {
            obj.hasOwnProperty(i) && iterator.call(context, obj[i], i, obj);
        }
    }
}

/**
 * extend object.
 * means that properties in dest will be overwritten by the ones in src.
 * @param {Object} dest
 * @param {Object} src
 * @param {Boolean} [merge]
 * @returns {Object} dest
 */
function extend(dest, src, merge) {
    var keys = Object.keys(src);
    var i = 0;
    while (i < keys.length) {
        if (!merge || (merge && dest[keys[i]] === undefined)) {
            dest[keys[i]] = src[keys[i]];
        }
        i++;
    }
    return dest;
}

/**
 * merge the values from src in the dest.
 * means that properties that exist in dest will not be overwritten by src
 * @param {Object} dest
 * @param {Object} src
 * @returns {Object} dest
 */
function merge(dest, src) {
    return extend(dest, src, true);
}

/**
 * simple class inheritance
 * @param {Function} child
 * @param {Function} base
 * @param {Object} [properties]
 */
function inherit(child, base, properties) {
    var baseP = base.prototype,
        childP;

    childP = child.prototype = Object.create(baseP);
    childP.constructor = child;
    childP._super = baseP;

    if (properties) {
        extend(childP, properties);
    }
}

/**
 * simple function bind
 * @param {Function} fn
 * @param {Object} context
 * @returns {Function}
 */
function bindFn(fn, context) {
    return function boundFn() {
        return fn.apply(context, arguments);
    };
}

/**
 * let a boolean value also be a function that must return a boolean
 * this first item in args will be used as the context
 * @param {Boolean|Function} val
 * @param {Array} [args]
 * @returns {Boolean}
 */
function boolOrFn(val, args) {
    if (typeof val == TYPE_FUNCTION) {
        return val.apply(args ? args[0] || undefined : undefined, args);
    }
    return val;
}

/**
 * use the val2 when val1 is undefined
 * @param {*} val1
 * @param {*} val2
 * @returns {*}
 */
function ifUndefined(val1, val2) {
    return (val1 === undefined) ? val2 : val1;
}

/**
 * addEventListener with multiple events at once
 * @param {EventTarget} target
 * @param {String} types
 * @param {Function} handler
 */
function addEventListeners(target, types, handler) {
    each(splitStr(types), function(type) {
        target.addEventListener(type, handler, false);
    });
}

/**
 * removeEventListener with multiple events at once
 * @param {EventTarget} target
 * @param {String} types
 * @param {Function} handler
 */
function removeEventListeners(target, types, handler) {
    each(splitStr(types), function(type) {
        target.removeEventListener(type, handler, false);
    });
}

/**
 * find if a node is in the given parent
 * @method hasParent
 * @param {HTMLElement} node
 * @param {HTMLElement} parent
 * @return {Boolean} found
 */
function hasParent(node, parent) {
    while (node) {
        if (node == parent) {
            return true;
        }
        node = node.parentNode;
    }
    return false;
}

/**
 * small indexOf wrapper
 * @param {String} str
 * @param {String} find
 * @returns {Boolean} found
 */
function inStr(str, find) {
    return str.indexOf(find) > -1;
}

/**
 * split string on whitespace
 * @param {String} str
 * @returns {Array} words
 */
function splitStr(str) {
    return str.trim().split(/\s+/g);
}

/**
 * find if a array contains the object using indexOf or a simple polyFill
 * @param {Array} src
 * @param {String} find
 * @param {String} [findByKey]
 * @return {Boolean|Number} false when not found, or the index
 */
function inArray(src, find, findByKey) {
    if (src.indexOf && !findByKey) {
        return src.indexOf(find);
    } else {
        var i = 0;
        while (i < src.length) {
            if ((findByKey && src[i][findByKey] == find) || (!findByKey && src[i] === find)) {
                return i;
            }
            i++;
        }
        return -1;
    }
}

/**
 * convert array-like objects to real arrays
 * @param {Object} obj
 * @returns {Array}
 */
function toArray(obj) {
    return Array.prototype.slice.call(obj, 0);
}

/**
 * unique array with objects based on a key (like 'id') or just by the array's value
 * @param {Array} src [{id:1},{id:2},{id:1}]
 * @param {String} [key]
 * @param {Boolean} [sort=False]
 * @returns {Array} [{id:1},{id:2}]
 */
function uniqueArray(src, key, sort) {
    var results = [];
    var values = [];
    var i = 0;

    while (i < src.length) {
        var val = key ? src[i][key] : src[i];
        if (inArray(values, val) < 0) {
            results.push(src[i]);
        }
        values[i] = val;
        i++;
    }

    if (sort) {
        if (!key) {
            results = results.sort();
        } else {
            results = results.sort(function sortUniqueArray(a, b) {
                return a[key] > b[key];
            });
        }
    }

    return results;
}

/**
 * get the prefixed property
 * @param {Object} obj
 * @param {String} property
 * @returns {String|Undefined} prefixed
 */
function prefixed(obj, property) {
    var prefix, prop;
    var camelProp = property[0].toUpperCase() + property.slice(1);

    var i = 0;
    while (i < VENDOR_PREFIXES.length) {
        prefix = VENDOR_PREFIXES[i];
        prop = (prefix) ? prefix + camelProp : property;

        if (prop in obj) {
            return prop;
        }
        i++;
    }
    return undefined;
}

/**
 * get a unique id
 * @returns {number} uniqueId
 */
var _uniqueId = 1;
function uniqueId() {
    return _uniqueId++;
}

/**
 * get the window object of an element
 * @param {HTMLElement} element
 * @returns {DocumentView|Window}
 */
function getWindowForElement(element) {
    var doc = element.ownerDocument;
    return (doc.defaultView || doc.parentWindow);
}

var MOBILE_REGEX = /mobile|tablet|ip(ad|hone|od)|android/i;

var SUPPORT_TOUCH = ('ontouchstart' in window);
var SUPPORT_POINTER_EVENTS = prefixed(window, 'PointerEvent') !== undefined;
var SUPPORT_ONLY_TOUCH = SUPPORT_TOUCH && MOBILE_REGEX.test(navigator.userAgent);

var INPUT_TYPE_TOUCH = 'touch';
var INPUT_TYPE_PEN = 'pen';
var INPUT_TYPE_MOUSE = 'mouse';
var INPUT_TYPE_KINECT = 'kinect';

var COMPUTE_INTERVAL = 25;

var INPUT_START = 1;
var INPUT_MOVE = 2;
var INPUT_END = 4;
var INPUT_CANCEL = 8;

var DIRECTION_NONE = 1;
var DIRECTION_LEFT = 2;
var DIRECTION_RIGHT = 4;
var DIRECTION_UP = 8;
var DIRECTION_DOWN = 16;

var DIRECTION_HORIZONTAL = DIRECTION_LEFT | DIRECTION_RIGHT;
var DIRECTION_VERTICAL = DIRECTION_UP | DIRECTION_DOWN;
var DIRECTION_ALL = DIRECTION_HORIZONTAL | DIRECTION_VERTICAL;

var PROPS_XY = ['x', 'y'];
var PROPS_CLIENT_XY = ['clientX', 'clientY'];

/**
 * create new input type manager
 * @param {Manager} manager
 * @param {Function} callback
 * @returns {Input}
 * @constructor
 */
function Input(manager, callback) {
    var self = this;
    this.manager = manager;
    this.callback = callback;
    this.element = manager.element;
    this.target = manager.options.inputTarget;

    // smaller wrapper around the handler, for the scope and the enabled state of the manager,
    // so when disabled the input events are completely bypassed.
    this.domHandler = function(ev) {
        if (boolOrFn(manager.options.enable, [manager])) {
            self.handler(ev);
        }
    };

    this.init();

}

Input.prototype = {
    /**
     * should handle the inputEvent data and trigger the callback
     * @virtual
     */
    handler: function() { },

    /**
     * bind the events
     */
    init: function() {
        this.evEl && addEventListeners(this.element, this.evEl, this.domHandler);
        this.evTarget && addEventListeners(this.target, this.evTarget, this.domHandler);
        this.evWin && addEventListeners(getWindowForElement(this.element), this.evWin, this.domHandler);
    },

    /**
     * unbind the events
     */
    destroy: function() {
        this.evEl && removeEventListeners(this.element, this.evEl, this.domHandler);
        this.evTarget && removeEventListeners(this.target, this.evTarget, this.domHandler);
        this.evWin && removeEventListeners(getWindowForElement(this.element), this.evWin, this.domHandler);
    }
};

/**
 * create new input type manager
 * called by the Manager constructor
 * @param {Hammer} manager
 * @returns {Input}
 */
function createInputInstance(manager) {
    var Type;
    var inputClass = manager.options.inputClass;

    if (inputClass) {
        Type = inputClass;
    } else if (SUPPORT_POINTER_EVENTS) {
        Type = PointerEventInput;
    } else if (SUPPORT_ONLY_TOUCH) {
        Type = TouchInput;
    } else if (!SUPPORT_TOUCH) {
        Type = MouseInput;
    } else {
        Type = TouchMouseInput;
    }
    return new (Type)(manager, inputHandler);
}

/**
 * handle input events
 * @param {Manager} manager
 * @param {String} eventType
 * @param {Object} input
 */
function inputHandler(manager, eventType, input) {
    var pointersLen = input.pointers.length;
    var changedPointersLen = input.changedPointers.length;
    var isFirst = (eventType & INPUT_START && (pointersLen - changedPointersLen === 0));
    var isFinal = (eventType & (INPUT_END | INPUT_CANCEL) && (pointersLen - changedPointersLen === 0));

    input.isFirst = !!isFirst;
    input.isFinal = !!isFinal;

    if (isFirst) {
        manager.session = {};
    }

    // source event is the normalized value of the domEvents
    // like 'touchstart, mouseup, pointerdown'
    input.eventType = eventType;

    // compute scale, rotation etc
    computeInputData(manager, input);

    // emit secret event
    manager.emit('hammer.input', input);

    manager.recognize(input);
    manager.session.prevInput = input;
}

/**
 * extend the data with some usable properties like scale, rotate, velocity etc
 * @param {Object} manager
 * @param {Object} input
 */
function computeInputData(manager, input) {
    var session = manager.session;
    var pointers = input.pointers;
    var pointersLength = pointers.length;

    // store the first input to calculate the distance and direction
    if (!session.firstInput) {
        session.firstInput = simpleCloneInputData(input);
    }

    // to compute scale and rotation we need to store the multiple touches
    if (pointersLength > 1 && !session.firstMultiple) {
        session.firstMultiple = simpleCloneInputData(input);
    } else if (pointersLength === 1) {
        session.firstMultiple = false;
    }

    var firstInput = session.firstInput;
    var firstMultiple = session.firstMultiple;
    var offsetCenter = firstMultiple ? firstMultiple.center : firstInput.center;

    var center = input.center = getCenter(pointers);
    input.timeStamp = now();
    input.deltaTime = input.timeStamp - firstInput.timeStamp;

    input.angle = getAngle(offsetCenter, center);
    input.distance = getDistance(offsetCenter, center);

    computeDeltaXY(session, input);
    input.offsetDirection = getDirection(input.deltaX, input.deltaY);

    input.scale = firstMultiple ? getScale(firstMultiple.pointers, pointers) : 1;
    input.rotation = firstMultiple ? getRotation(firstMultiple.pointers, pointers) : 0;

    computeIntervalInputData(session, input);

    // find the correct target
    var target = manager.element;
    if (hasParent(input.srcEvent.target, target)) {
        target = input.srcEvent.target;
    }
    input.target = target;
}

function computeDeltaXY(session, input) {
    var center = input.center;
    var offset = session.offsetDelta || {};
    var prevDelta = session.prevDelta || {};
    var prevInput = session.prevInput || {};

    if (input.eventType === INPUT_START || prevInput.eventType === INPUT_END) {
        prevDelta = session.prevDelta = {
            x: prevInput.deltaX || 0,
            y: prevInput.deltaY || 0
        };

        offset = session.offsetDelta = {
            x: center.x,
            y: center.y
        };
    }

    input.deltaX = prevDelta.x + (center.x - offset.x);
    input.deltaY = prevDelta.y + (center.y - offset.y);
}

/**
 * velocity is calculated every x ms
 * @param {Object} session
 * @param {Object} input
 */
function computeIntervalInputData(session, input) {
    var last = session.lastInterval || input,
        deltaTime = input.timeStamp - last.timeStamp,
        velocity, velocityX, velocityY, direction;

    if (input.eventType != INPUT_CANCEL && (deltaTime > COMPUTE_INTERVAL || last.velocity === undefined)) {
        var deltaX = last.deltaX - input.deltaX;
        var deltaY = last.deltaY - input.deltaY;

        var v = getVelocity(deltaTime, deltaX, deltaY);
        velocityX = v.x;
        velocityY = v.y;
        velocity = (abs(v.x) > abs(v.y)) ? v.x : v.y;
        direction = getDirection(deltaX, deltaY);

        session.lastInterval = input;
    } else {
        // use latest velocity info if it doesn't overtake a minimum period
        velocity = last.velocity;
        velocityX = last.velocityX;
        velocityY = last.velocityY;
        direction = last.direction;
    }

    input.velocity = velocity;
    input.velocityX = velocityX;
    input.velocityY = velocityY;
    input.direction = direction;
}

/**
 * create a simple clone from the input used for storage of firstInput and firstMultiple
 * @param {Object} input
 * @returns {Object} clonedInputData
 */
function simpleCloneInputData(input) {
    // make a simple copy of the pointers because we will get a reference if we don't
    // we only need clientXY for the calculations
    var pointers = [];
    var i = 0;
    while (i < input.pointers.length) {
        pointers[i] = {
            clientX: round(input.pointers[i].clientX),
            clientY: round(input.pointers[i].clientY)
        };
        i++;
    }

    return {
        timeStamp: now(),
        pointers: pointers,
        center: getCenter(pointers),
        deltaX: input.deltaX,
        deltaY: input.deltaY
    };
}

/**
 * get the center of all the pointers
 * @param {Array} pointers
 * @return {Object} center contains `x` and `y` properties
 */
function getCenter(pointers) {
    var pointersLength = pointers.length;

    // no need to loop when only one touch
    if (pointersLength === 1) {
        return {
            x: round(pointers[0].clientX),
            y: round(pointers[0].clientY)
        };
    }

    var x = 0, y = 0, i = 0;
    while (i < pointersLength) {
        x += pointers[i].clientX;
        y += pointers[i].clientY;
        i++;
    }

    return {
        x: round(x / pointersLength),
        y: round(y / pointersLength)
    };
}

/**
 * calculate the velocity between two points. unit is in px per ms.
 * @param {Number} deltaTime
 * @param {Number} x
 * @param {Number} y
 * @return {Object} velocity `x` and `y`
 */
function getVelocity(deltaTime, x, y) {
    return {
        x: x / deltaTime || 0,
        y: y / deltaTime || 0
    };
}

/**
 * get the direction between two points
 * @param {Number} x
 * @param {Number} y
 * @return {Number} direction
 */
function getDirection(x, y) {
    if (x === y) {
        return DIRECTION_NONE;
    }

    if (abs(x) >= abs(y)) {
        return x > 0 ? DIRECTION_LEFT : DIRECTION_RIGHT;
    }
    return y > 0 ? DIRECTION_UP : DIRECTION_DOWN;
}

/**
 * calculate the absolute distance between two points
 * @param {Object} p1 {x, y}
 * @param {Object} p2 {x, y}
 * @param {Array} [props] containing x and y keys
 * @return {Number} distance
 */
function getDistance(p1, p2, props) {
    if (!props) {
        props = PROPS_XY;
    }
    var x = p2[props[0]] - p1[props[0]],
        y = p2[props[1]] - p1[props[1]];

    return Math.sqrt((x * x) + (y * y));
}

/**
 * calculate the angle between two coordinates
 * @param {Object} p1
 * @param {Object} p2
 * @param {Array} [props] containing x and y keys
 * @return {Number} angle
 */
function getAngle(p1, p2, props) {
    if (!props) {
        props = PROPS_XY;
    }
    var x = p2[props[0]] - p1[props[0]],
        y = p2[props[1]] - p1[props[1]];
    return Math.atan2(y, x) * 180 / Math.PI;
}

/**
 * calculate the rotation degrees between two pointersets
 * @param {Array} start array of pointers
 * @param {Array} end array of pointers
 * @return {Number} rotation
 */
function getRotation(start, end) {
    return getAngle(end[1], end[0], PROPS_CLIENT_XY) - getAngle(start[1], start[0], PROPS_CLIENT_XY);
}

/**
 * calculate the scale factor between two pointersets
 * no scale is 1, and goes down to 0 when pinched together, and bigger when pinched out
 * @param {Array} start array of pointers
 * @param {Array} end array of pointers
 * @return {Number} scale
 */
function getScale(start, end) {
    return getDistance(end[0], end[1], PROPS_CLIENT_XY) / getDistance(start[0], start[1], PROPS_CLIENT_XY);
}

var MOUSE_INPUT_MAP = {
    mousedown: INPUT_START,
    mousemove: INPUT_MOVE,
    mouseup: INPUT_END
};

var MOUSE_ELEMENT_EVENTS = 'mousedown';
var MOUSE_WINDOW_EVENTS = 'mousemove mouseup';

/**
 * Mouse events input
 * @constructor
 * @extends Input
 */
function MouseInput() {
    this.evEl = MOUSE_ELEMENT_EVENTS;
    this.evWin = MOUSE_WINDOW_EVENTS;

    this.allow = true; // used by Input.TouchMouse to disable mouse events
    this.pressed = false; // mousedown state

    Input.apply(this, arguments);
}

inherit(MouseInput, Input, {
    /**
     * handle mouse events
     * @param {Object} ev
     */
    handler: function MEhandler(ev) {
        var eventType = MOUSE_INPUT_MAP[ev.type];

        // on start we want to have the left mouse button down
        if (eventType & INPUT_START && ev.button === 0) {
            this.pressed = true;
        }

        if (eventType & INPUT_MOVE && ev.which !== 1) {
            eventType = INPUT_END;
        }

        // mouse must be down, and mouse events are allowed (see the TouchMouse input)
        if (!this.pressed || !this.allow) {
            return;
        }

        if (eventType & INPUT_END) {
            this.pressed = false;
        }

        this.callback(this.manager, eventType, {
            pointers: [ev],
            changedPointers: [ev],
            pointerType: INPUT_TYPE_MOUSE,
            srcEvent: ev
        });
    }
});

var POINTER_INPUT_MAP = {
    pointerdown: INPUT_START,
    pointermove: INPUT_MOVE,
    pointerup: INPUT_END,
    pointercancel: INPUT_CANCEL,
    pointerout: INPUT_CANCEL
};

// in IE10 the pointer types is defined as an enum
var IE10_POINTER_TYPE_ENUM = {
    2: INPUT_TYPE_TOUCH,
    3: INPUT_TYPE_PEN,
    4: INPUT_TYPE_MOUSE,
    5: INPUT_TYPE_KINECT // see https://twitter.com/jacobrossi/status/480596438489890816
};

var POINTER_ELEMENT_EVENTS = 'pointerdown';
var POINTER_WINDOW_EVENTS = 'pointermove pointerup pointercancel';

// IE10 has prefixed support, and case-sensitive
if (window.MSPointerEvent) {
    POINTER_ELEMENT_EVENTS = 'MSPointerDown';
    POINTER_WINDOW_EVENTS = 'MSPointerMove MSPointerUp MSPointerCancel';
}

/**
 * Pointer events input
 * @constructor
 * @extends Input
 */
function PointerEventInput() {
    this.evEl = POINTER_ELEMENT_EVENTS;
    this.evWin = POINTER_WINDOW_EVENTS;

    Input.apply(this, arguments);

    this.store = (this.manager.session.pointerEvents = []);
}

inherit(PointerEventInput, Input, {
    /**
     * handle mouse events
     * @param {Object} ev
     */
    handler: function PEhandler(ev) {
        var store = this.store;
        var removePointer = false;

        var eventTypeNormalized = ev.type.toLowerCase().replace('ms', '');
        var eventType = POINTER_INPUT_MAP[eventTypeNormalized];
        var pointerType = IE10_POINTER_TYPE_ENUM[ev.pointerType] || ev.pointerType;

        var isTouch = (pointerType == INPUT_TYPE_TOUCH);

        // get index of the event in the store
        var storeIndex = inArray(store, ev.pointerId, 'pointerId');

        // start and mouse must be down
        if (eventType & INPUT_START && (ev.button === 0 || isTouch)) {
            if (storeIndex < 0) {
                store.push(ev);
                storeIndex = store.length - 1;
            }
        } else if (eventType & (INPUT_END | INPUT_CANCEL)) {
            removePointer = true;
        }

        // it not found, so the pointer hasn't been down (so it's probably a hover)
        if (storeIndex < 0) {
            return;
        }

        // update the event in the store
        store[storeIndex] = ev;

        this.callback(this.manager, eventType, {
            pointers: store,
            changedPointers: [ev],
            pointerType: pointerType,
            srcEvent: ev
        });

        if (removePointer) {
            // remove from the store
            store.splice(storeIndex, 1);
        }
    }
});

var SINGLE_TOUCH_INPUT_MAP = {
    touchstart: INPUT_START,
    touchmove: INPUT_MOVE,
    touchend: INPUT_END,
    touchcancel: INPUT_CANCEL
};

var SINGLE_TOUCH_TARGET_EVENTS = 'touchstart';
var SINGLE_TOUCH_WINDOW_EVENTS = 'touchstart touchmove touchend touchcancel';

/**
 * Touch events input
 * @constructor
 * @extends Input
 */
function SingleTouchInput() {
    this.evTarget = SINGLE_TOUCH_TARGET_EVENTS;
    this.evWin = SINGLE_TOUCH_WINDOW_EVENTS;
    this.started = false;

    Input.apply(this, arguments);
}

inherit(SingleTouchInput, Input, {
    handler: function TEhandler(ev) {
        var type = SINGLE_TOUCH_INPUT_MAP[ev.type];

        // should we handle the touch events?
        if (type === INPUT_START) {
            this.started = true;
        }

        if (!this.started) {
            return;
        }

        var touches = normalizeSingleTouches.call(this, ev, type);

        // when done, reset the started state
        if (type & (INPUT_END | INPUT_CANCEL) && touches[0].length - touches[1].length === 0) {
            this.started = false;
        }

        this.callback(this.manager, type, {
            pointers: touches[0],
            changedPointers: touches[1],
            pointerType: INPUT_TYPE_TOUCH,
            srcEvent: ev
        });
    }
});

/**
 * @this {TouchInput}
 * @param {Object} ev
 * @param {Number} type flag
 * @returns {undefined|Array} [all, changed]
 */
function normalizeSingleTouches(ev, type) {
    var all = toArray(ev.touches);
    var changed = toArray(ev.changedTouches);

    if (type & (INPUT_END | INPUT_CANCEL)) {
        all = uniqueArray(all.concat(changed), 'identifier', true);
    }

    return [all, changed];
}

var TOUCH_INPUT_MAP = {
    touchstart: INPUT_START,
    touchmove: INPUT_MOVE,
    touchend: INPUT_END,
    touchcancel: INPUT_CANCEL
};

var TOUCH_TARGET_EVENTS = 'touchstart touchmove touchend touchcancel';

/**
 * Multi-user touch events input
 * @constructor
 * @extends Input
 */
function TouchInput() {
    this.evTarget = TOUCH_TARGET_EVENTS;
    this.targetIds = {};

    Input.apply(this, arguments);
}

inherit(TouchInput, Input, {
    handler: function MTEhandler(ev) {
        var type = TOUCH_INPUT_MAP[ev.type];
        var touches = getTouches.call(this, ev, type);
        if (!touches) {
            return;
        }

        this.callback(this.manager, type, {
            pointers: touches[0],
            changedPointers: touches[1],
            pointerType: INPUT_TYPE_TOUCH,
            srcEvent: ev
        });
    }
});

/**
 * @this {TouchInput}
 * @param {Object} ev
 * @param {Number} type flag
 * @returns {undefined|Array} [all, changed]
 */
function getTouches(ev, type) {
    var allTouches = toArray(ev.touches);
    var targetIds = this.targetIds;

    // when there is only one touch, the process can be simplified
    if (type & (INPUT_START | INPUT_MOVE) && allTouches.length === 1) {
        targetIds[allTouches[0].identifier] = true;
        return [allTouches, allTouches];
    }

    var i,
        targetTouches,
        changedTouches = toArray(ev.changedTouches),
        changedTargetTouches = [],
        target = this.target;

    // get target touches from touches
    targetTouches = allTouches.filter(function(touch) {
        return hasParent(touch.target, target);
    });

    // collect touches
    if (type === INPUT_START) {
        i = 0;
        while (i < targetTouches.length) {
            targetIds[targetTouches[i].identifier] = true;
            i++;
        }
    }

    // filter changed touches to only contain touches that exist in the collected target ids
    i = 0;
    while (i < changedTouches.length) {
        if (targetIds[changedTouches[i].identifier]) {
            changedTargetTouches.push(changedTouches[i]);
        }

        // cleanup removed touches
        if (type & (INPUT_END | INPUT_CANCEL)) {
            delete targetIds[changedTouches[i].identifier];
        }
        i++;
    }

    if (!changedTargetTouches.length) {
        return;
    }

    return [
        // merge targetTouches with changedTargetTouches so it contains ALL touches, including 'end' and 'cancel'
        uniqueArray(targetTouches.concat(changedTargetTouches), 'identifier', true),
        changedTargetTouches
    ];
}

/**
 * Combined touch and mouse input
 *
 * Touch has a higher priority then mouse, and while touching no mouse events are allowed.
 * This because touch devices also emit mouse events while doing a touch.
 *
 * @constructor
 * @extends Input
 */
function TouchMouseInput() {
    Input.apply(this, arguments);

    var handler = bindFn(this.handler, this);
    this.touch = new TouchInput(this.manager, handler);
    this.mouse = new MouseInput(this.manager, handler);
}

inherit(TouchMouseInput, Input, {
    /**
     * handle mouse and touch events
     * @param {Hammer} manager
     * @param {String} inputEvent
     * @param {Object} inputData
     */
    handler: function TMEhandler(manager, inputEvent, inputData) {
        var isTouch = (inputData.pointerType == INPUT_TYPE_TOUCH),
            isMouse = (inputData.pointerType == INPUT_TYPE_MOUSE);

        // when we're in a touch event, so  block all upcoming mouse events
        // most mobile browser also emit mouseevents, right after touchstart
        if (isTouch) {
            this.mouse.allow = false;
        } else if (isMouse && !this.mouse.allow) {
            return;
        }

        // reset the allowMouse when we're done
        if (inputEvent & (INPUT_END | INPUT_CANCEL)) {
            this.mouse.allow = true;
        }

        this.callback(manager, inputEvent, inputData);
    },

    /**
     * remove the event listeners
     */
    destroy: function destroy() {
        this.touch.destroy();
        this.mouse.destroy();
    }
});

var PREFIXED_TOUCH_ACTION = prefixed(TEST_ELEMENT.style, 'touchAction');
var NATIVE_TOUCH_ACTION = PREFIXED_TOUCH_ACTION !== undefined;

// magical touchAction value
var TOUCH_ACTION_COMPUTE = 'compute';
var TOUCH_ACTION_AUTO = 'auto';
var TOUCH_ACTION_MANIPULATION = 'manipulation'; // not implemented
var TOUCH_ACTION_NONE = 'none';
var TOUCH_ACTION_PAN_X = 'pan-x';
var TOUCH_ACTION_PAN_Y = 'pan-y';

/**
 * Touch Action
 * sets the touchAction property or uses the js alternative
 * @param {Manager} manager
 * @param {String} value
 * @constructor
 */
function TouchAction(manager, value) {
    this.manager = manager;
    this.set(value);
}

TouchAction.prototype = {
    /**
     * set the touchAction value on the element or enable the polyfill
     * @param {String} value
     */
    set: function(value) {
        // find out the touch-action by the event handlers
        if (value == TOUCH_ACTION_COMPUTE) {
            value = this.compute();
        }

        if (NATIVE_TOUCH_ACTION) {
            this.manager.element.style[PREFIXED_TOUCH_ACTION] = value;
        }
        this.actions = value.toLowerCase().trim();
    },

    /**
     * just re-set the touchAction value
     */
    update: function() {
        this.set(this.manager.options.touchAction);
    },

    /**
     * compute the value for the touchAction property based on the recognizer's settings
     * @returns {String} value
     */
    compute: function() {
        var actions = [];
        each(this.manager.recognizers, function(recognizer) {
            if (boolOrFn(recognizer.options.enable, [recognizer])) {
                actions = actions.concat(recognizer.getTouchAction());
            }
        });
        return cleanTouchActions(actions.join(' '));
    },

    /**
     * this method is called on each input cycle and provides the preventing of the browser behavior
     * @param {Object} input
     */
    preventDefaults: function(input) {
        // not needed with native support for the touchAction property
        if (NATIVE_TOUCH_ACTION) {
            return;
        }

        var srcEvent = input.srcEvent;
        var direction = input.offsetDirection;

        // if the touch action did prevented once this session
        if (this.manager.session.prevented) {
            srcEvent.preventDefault();
            return;
        }

        var actions = this.actions;
        var hasNone = inStr(actions, TOUCH_ACTION_NONE);
        var hasPanY = inStr(actions, TOUCH_ACTION_PAN_Y);
        var hasPanX = inStr(actions, TOUCH_ACTION_PAN_X);

        if (hasNone ||
            (hasPanY && direction & DIRECTION_HORIZONTAL) ||
            (hasPanX && direction & DIRECTION_VERTICAL)) {
            return this.preventSrc(srcEvent);
        }
    },

    /**
     * call preventDefault to prevent the browser's default behavior (scrolling in most cases)
     * @param {Object} srcEvent
     */
    preventSrc: function(srcEvent) {
        this.manager.session.prevented = true;
        srcEvent.preventDefault();
    }
};

/**
 * when the touchActions are collected they are not a valid value, so we need to clean things up. *
 * @param {String} actions
 * @returns {*}
 */
function cleanTouchActions(actions) {
    // none
    if (inStr(actions, TOUCH_ACTION_NONE)) {
        return TOUCH_ACTION_NONE;
    }

    var hasPanX = inStr(actions, TOUCH_ACTION_PAN_X);
    var hasPanY = inStr(actions, TOUCH_ACTION_PAN_Y);

    // pan-x and pan-y can be combined
    if (hasPanX && hasPanY) {
        return TOUCH_ACTION_PAN_X + ' ' + TOUCH_ACTION_PAN_Y;
    }

    // pan-x OR pan-y
    if (hasPanX || hasPanY) {
        return hasPanX ? TOUCH_ACTION_PAN_X : TOUCH_ACTION_PAN_Y;
    }

    // manipulation
    if (inStr(actions, TOUCH_ACTION_MANIPULATION)) {
        return TOUCH_ACTION_MANIPULATION;
    }

    return TOUCH_ACTION_AUTO;
}

/**
 * Recognizer flow explained; *
 * All recognizers have the initial state of POSSIBLE when a input session starts.
 * The definition of a input session is from the first input until the last input, with all it's movement in it. *
 * Example session for mouse-input: mousedown -> mousemove -> mouseup
 *
 * On each recognizing cycle (see Manager.recognize) the .recognize() method is executed
 * which determines with state it should be.
 *
 * If the recognizer has the state FAILED, CANCELLED or RECOGNIZED (equals ENDED), it is reset to
 * POSSIBLE to give it another change on the next cycle.
 *
 *               Possible
 *                  |
 *            +-----+---------------+
 *            |                     |
 *      +-----+-----+               |
 *      |           |               |
 *   Failed      Cancelled          |
 *                          +-------+------+
 *                          |              |
 *                      Recognized       Began
 *                                         |
 *                                      Changed
 *                                         |
 *                                  Ended/Recognized
 */
var STATE_POSSIBLE = 1;
var STATE_BEGAN = 2;
var STATE_CHANGED = 4;
var STATE_ENDED = 8;
var STATE_RECOGNIZED = STATE_ENDED;
var STATE_CANCELLED = 16;
var STATE_FAILED = 32;

/**
 * Recognizer
 * Every recognizer needs to extend from this class.
 * @constructor
 * @param {Object} options
 */
function Recognizer(options) {
    this.id = uniqueId();

    this.manager = null;
    this.options = merge(options || {}, this.defaults);

    // default is enable true
    this.options.enable = ifUndefined(this.options.enable, true);

    this.state = STATE_POSSIBLE;

    this.simultaneous = {};
    this.requireFail = [];
}

Recognizer.prototype = {
    /**
     * @virtual
     * @type {Object}
     */
    defaults: {},

    /**
     * set options
     * @param {Object} options
     * @return {Recognizer}
     */
    set: function(options) {
        extend(this.options, options);

        // also update the touchAction, in case something changed about the directions/enabled state
        this.manager && this.manager.touchAction.update();
        return this;
    },

    /**
     * recognize simultaneous with an other recognizer.
     * @param {Recognizer} otherRecognizer
     * @returns {Recognizer} this
     */
    recognizeWith: function(otherRecognizer) {
        if (invokeArrayArg(otherRecognizer, 'recognizeWith', this)) {
            return this;
        }

        var simultaneous = this.simultaneous;
        otherRecognizer = getRecognizerByNameIfManager(otherRecognizer, this);
        if (!simultaneous[otherRecognizer.id]) {
            simultaneous[otherRecognizer.id] = otherRecognizer;
            otherRecognizer.recognizeWith(this);
        }
        return this;
    },

    /**
     * drop the simultaneous link. it doesnt remove the link on the other recognizer.
     * @param {Recognizer} otherRecognizer
     * @returns {Recognizer} this
     */
    dropRecognizeWith: function(otherRecognizer) {
        if (invokeArrayArg(otherRecognizer, 'dropRecognizeWith', this)) {
            return this;
        }

        otherRecognizer = getRecognizerByNameIfManager(otherRecognizer, this);
        delete this.simultaneous[otherRecognizer.id];
        return this;
    },

    /**
     * recognizer can only run when an other is failing
     * @param {Recognizer} otherRecognizer
     * @returns {Recognizer} this
     */
    requireFailure: function(otherRecognizer) {
        if (invokeArrayArg(otherRecognizer, 'requireFailure', this)) {
            return this;
        }

        var requireFail = this.requireFail;
        otherRecognizer = getRecognizerByNameIfManager(otherRecognizer, this);
        if (inArray(requireFail, otherRecognizer) === -1) {
            requireFail.push(otherRecognizer);
            otherRecognizer.requireFailure(this);
        }
        return this;
    },

    /**
     * drop the requireFailure link. it does not remove the link on the other recognizer.
     * @param {Recognizer} otherRecognizer
     * @returns {Recognizer} this
     */
    dropRequireFailure: function(otherRecognizer) {
        if (invokeArrayArg(otherRecognizer, 'dropRequireFailure', this)) {
            return this;
        }

        otherRecognizer = getRecognizerByNameIfManager(otherRecognizer, this);
        var index = inArray(this.requireFail, otherRecognizer);
        if (index > -1) {
            this.requireFail.splice(index, 1);
        }
        return this;
    },

    /**
     * has require failures boolean
     * @returns {boolean}
     */
    hasRequireFailures: function() {
        return this.requireFail.length > 0;
    },

    /**
     * if the recognizer can recognize simultaneous with an other recognizer
     * @param {Recognizer} otherRecognizer
     * @returns {Boolean}
     */
    canRecognizeWith: function(otherRecognizer) {
        return !!this.simultaneous[otherRecognizer.id];
    },

    /**
     * You should use `tryEmit` instead of `emit` directly to check
     * that all the needed recognizers has failed before emitting.
     * @param {Object} input
     */
    emit: function(input) {
        var self = this;
        var state = this.state;

        function emit(withState) {
            self.manager.emit(self.options.event + (withState ? stateStr(state) : ''), input);
        }

        // 'panstart' and 'panmove'
        if (state < STATE_ENDED) {
            emit(true);
        }

        emit(); // simple 'eventName' events

        // panend and pancancel
        if (state >= STATE_ENDED) {
            emit(true);
        }
    },

    /**
     * Check that all the require failure recognizers has failed,
     * if true, it emits a gesture event,
     * otherwise, setup the state to FAILED.
     * @param {Object} input
     */
    tryEmit: function(input) {
        if (this.canEmit()) {
            return this.emit(input);
        }
        // it's failing anyway
        this.state = STATE_FAILED;
    },

    /**
     * can we emit?
     * @returns {boolean}
     */
    canEmit: function() {
        var i = 0;
        while (i < this.requireFail.length) {
            if (!(this.requireFail[i].state & (STATE_FAILED | STATE_POSSIBLE))) {
                return false;
            }
            i++;
        }
        return true;
    },

    /**
     * update the recognizer
     * @param {Object} inputData
     */
    recognize: function(inputData) {
        // make a new copy of the inputData
        // so we can change the inputData without messing up the other recognizers
        var inputDataClone = extend({}, inputData);

        // is is enabled and allow recognizing?
        if (!boolOrFn(this.options.enable, [this, inputDataClone])) {
            this.reset();
            this.state = STATE_FAILED;
            return;
        }

        // reset when we've reached the end
        if (this.state & (STATE_RECOGNIZED | STATE_CANCELLED | STATE_FAILED)) {
            this.state = STATE_POSSIBLE;
        }

        this.state = this.process(inputDataClone);

        // the recognizer has recognized a gesture
        // so trigger an event
        if (this.state & (STATE_BEGAN | STATE_CHANGED | STATE_ENDED | STATE_CANCELLED)) {
            this.tryEmit(inputDataClone);
        }
    },

    /**
     * return the state of the recognizer
     * the actual recognizing happens in this method
     * @virtual
     * @param {Object} inputData
     * @returns {Const} STATE
     */
    process: function(inputData) { }, // jshint ignore:line

    /**
     * return the preferred touch-action
     * @virtual
     * @returns {Array}
     */
    getTouchAction: function() { },

    /**
     * called when the gesture isn't allowed to recognize
     * like when another is being recognized or it is disabled
     * @virtual
     */
    reset: function() { }
};

/**
 * get a usable string, used as event postfix
 * @param {Const} state
 * @returns {String} state
 */
function stateStr(state) {
    if (state & STATE_CANCELLED) {
        return 'cancel';
    } else if (state & STATE_ENDED) {
        return 'end';
    } else if (state & STATE_CHANGED) {
        return 'move';
    } else if (state & STATE_BEGAN) {
        return 'start';
    }
    return '';
}

/**
 * direction cons to string
 * @param {Const} direction
 * @returns {String}
 */
function directionStr(direction) {
    if (direction == DIRECTION_DOWN) {
        return 'down';
    } else if (direction == DIRECTION_UP) {
        return 'up';
    } else if (direction == DIRECTION_LEFT) {
        return 'left';
    } else if (direction == DIRECTION_RIGHT) {
        return 'right';
    }
    return '';
}

/**
 * get a recognizer by name if it is bound to a manager
 * @param {Recognizer|String} otherRecognizer
 * @param {Recognizer} recognizer
 * @returns {Recognizer}
 */
function getRecognizerByNameIfManager(otherRecognizer, recognizer) {
    var manager = recognizer.manager;
    if (manager) {
        return manager.get(otherRecognizer);
    }
    return otherRecognizer;
}

/**
 * This recognizer is just used as a base for the simple attribute recognizers.
 * @constructor
 * @extends Recognizer
 */
function AttrRecognizer() {
    Recognizer.apply(this, arguments);
}

inherit(AttrRecognizer, Recognizer, {
    /**
     * @namespace
     * @memberof AttrRecognizer
     */
    defaults: {
        /**
         * @type {Number}
         * @default 1
         */
        pointers: 1
    },

    /**
     * Used to check if it the recognizer receives valid input, like input.distance > 10.
     * @memberof AttrRecognizer
     * @param {Object} input
     * @returns {Boolean} recognized
     */
    attrTest: function(input) {
        var optionPointers = this.options.pointers;
        return optionPointers === 0 || input.pointers.length === optionPointers;
    },

    /**
     * Process the input and return the state for the recognizer
     * @memberof AttrRecognizer
     * @param {Object} input
     * @returns {*} State
     */
    process: function(input) {
        var state = this.state;
        var eventType = input.eventType;

        var isRecognized = state & (STATE_BEGAN | STATE_CHANGED);
        var isValid = this.attrTest(input);

        // on cancel input and we've recognized before, return STATE_CANCELLED
        if (isRecognized && (eventType & INPUT_CANCEL || !isValid)) {
            return state | STATE_CANCELLED;
        } else if (isRecognized || isValid) {
            if (eventType & INPUT_END) {
                return state | STATE_ENDED;
            } else if (!(state & STATE_BEGAN)) {
                return STATE_BEGAN;
            }
            return state | STATE_CHANGED;
        }
        return STATE_FAILED;
    }
});

/**
 * Pan
 * Recognized when the pointer is down and moved in the allowed direction.
 * @constructor
 * @extends AttrRecognizer
 */
function PanRecognizer() {
    AttrRecognizer.apply(this, arguments);

    this.pX = null;
    this.pY = null;
}

inherit(PanRecognizer, AttrRecognizer, {
    /**
     * @namespace
     * @memberof PanRecognizer
     */
    defaults: {
        event: 'pan',
        threshold: 10,
        pointers: 1,
        direction: DIRECTION_ALL
    },

    getTouchAction: function() {
        var direction = this.options.direction;
        var actions = [];
        if (direction & DIRECTION_HORIZONTAL) {
            actions.push(TOUCH_ACTION_PAN_Y);
        }
        if (direction & DIRECTION_VERTICAL) {
            actions.push(TOUCH_ACTION_PAN_X);
        }
        return actions;
    },

    directionTest: function(input) {
        var options = this.options;
        var hasMoved = true;
        var distance = input.distance;
        var direction = input.direction;
        var x = input.deltaX;
        var y = input.deltaY;

        // lock to axis?
        if (!(direction & options.direction)) {
            if (options.direction & DIRECTION_HORIZONTAL) {
                direction = (x === 0) ? DIRECTION_NONE : (x < 0) ? DIRECTION_LEFT : DIRECTION_RIGHT;
                hasMoved = x != this.pX;
                distance = Math.abs(input.deltaX);
            } else {
                direction = (y === 0) ? DIRECTION_NONE : (y < 0) ? DIRECTION_UP : DIRECTION_DOWN;
                hasMoved = y != this.pY;
                distance = Math.abs(input.deltaY);
            }
        }
        input.direction = direction;
        return hasMoved && distance > options.threshold && direction & options.direction;
    },

    attrTest: function(input) {
        return AttrRecognizer.prototype.attrTest.call(this, input) &&
            (this.state & STATE_BEGAN || (!(this.state & STATE_BEGAN) && this.directionTest(input)));
    },

    emit: function(input) {
        this.pX = input.deltaX;
        this.pY = input.deltaY;

        var direction = directionStr(input.direction);
        if (direction) {
            this.manager.emit(this.options.event + direction, input);
        }

        this._super.emit.call(this, input);
    }
});

/**
 * Pinch
 * Recognized when two or more pointers are moving toward (zoom-in) or away from each other (zoom-out).
 * @constructor
 * @extends AttrRecognizer
 */
function PinchRecognizer() {
    AttrRecognizer.apply(this, arguments);
}

inherit(PinchRecognizer, AttrRecognizer, {
    /**
     * @namespace
     * @memberof PinchRecognizer
     */
    defaults: {
        event: 'pinch',
        threshold: 0,
        pointers: 2
    },

    getTouchAction: function() {
        return [TOUCH_ACTION_NONE];
    },

    attrTest: function(input) {
        return this._super.attrTest.call(this, input) &&
            (Math.abs(input.scale - 1) > this.options.threshold || this.state & STATE_BEGAN);
    },

    emit: function(input) {
        this._super.emit.call(this, input);
        if (input.scale !== 1) {
            var inOut = input.scale < 1 ? 'in' : 'out';
            this.manager.emit(this.options.event + inOut, input);
        }
    }
});

/**
 * Press
 * Recognized when the pointer is down for x ms without any movement.
 * @constructor
 * @extends Recognizer
 */
function PressRecognizer() {
    Recognizer.apply(this, arguments);

    this._timer = null;
    this._input = null;
}

inherit(PressRecognizer, Recognizer, {
    /**
     * @namespace
     * @memberof PressRecognizer
     */
    defaults: {
        event: 'press',
        pointers: 1,
        time: 500, // minimal time of the pointer to be pressed
        threshold: 5 // a minimal movement is ok, but keep it low
    },

    getTouchAction: function() {
        return [TOUCH_ACTION_AUTO];
    },

    process: function(input) {
        var options = this.options;
        var validPointers = input.pointers.length === options.pointers;
        var validMovement = input.distance < options.threshold;
        var validTime = input.deltaTime > options.time;

        this._input = input;

        // we only allow little movement
        // and we've reached an end event, so a tap is possible
        if (!validMovement || !validPointers || (input.eventType & (INPUT_END | INPUT_CANCEL) && !validTime)) {
            this.reset();
        } else if (input.eventType & INPUT_START) {
            this.reset();
            this._timer = setTimeoutContext(function() {
                this.state = STATE_RECOGNIZED;
                this.tryEmit();
            }, options.time, this);
        } else if (input.eventType & INPUT_END) {
            return STATE_RECOGNIZED;
        }
        return STATE_FAILED;
    },

    reset: function() {
        clearTimeout(this._timer);
    },

    emit: function(input) {
        if (this.state !== STATE_RECOGNIZED) {
            return;
        }

        if (input && (input.eventType & INPUT_END)) {
            this.manager.emit(this.options.event + 'up', input);
        } else {
            this._input.timeStamp = now();
            this.manager.emit(this.options.event, this._input);
        }
    }
});

/**
 * Rotate
 * Recognized when two or more pointer are moving in a circular motion.
 * @constructor
 * @extends AttrRecognizer
 */
function RotateRecognizer() {
    AttrRecognizer.apply(this, arguments);
}

inherit(RotateRecognizer, AttrRecognizer, {
    /**
     * @namespace
     * @memberof RotateRecognizer
     */
    defaults: {
        event: 'rotate',
        threshold: 0,
        pointers: 2
    },

    getTouchAction: function() {
        return [TOUCH_ACTION_NONE];
    },

    attrTest: function(input) {
        return this._super.attrTest.call(this, input) &&
            (Math.abs(input.rotation) > this.options.threshold || this.state & STATE_BEGAN);
    }
});

/**
 * Swipe
 * Recognized when the pointer is moving fast (velocity), with enough distance in the allowed direction.
 * @constructor
 * @extends AttrRecognizer
 */
function SwipeRecognizer() {
    AttrRecognizer.apply(this, arguments);
}

inherit(SwipeRecognizer, AttrRecognizer, {
    /**
     * @namespace
     * @memberof SwipeRecognizer
     */
    defaults: {
        event: 'swipe',
        threshold: 10,
        velocity: 0.65,
        direction: DIRECTION_HORIZONTAL | DIRECTION_VERTICAL,
        pointers: 1
    },

    getTouchAction: function() {
        return PanRecognizer.prototype.getTouchAction.call(this);
    },

    attrTest: function(input) {
        var direction = this.options.direction;
        var velocity;

        if (direction & (DIRECTION_HORIZONTAL | DIRECTION_VERTICAL)) {
            velocity = input.velocity;
        } else if (direction & DIRECTION_HORIZONTAL) {
            velocity = input.velocityX;
        } else if (direction & DIRECTION_VERTICAL) {
            velocity = input.velocityY;
        }

        return this._super.attrTest.call(this, input) &&
            direction & input.direction &&
            input.distance > this.options.threshold &&
            abs(velocity) > this.options.velocity && input.eventType & INPUT_END;
    },

    emit: function(input) {
        var direction = directionStr(input.direction);
        if (direction) {
            this.manager.emit(this.options.event + direction, input);
        }

        this.manager.emit(this.options.event, input);
    }
});

/**
 * A tap is ecognized when the pointer is doing a small tap/click. Multiple taps are recognized if they occur
 * between the given interval and position. The delay option can be used to recognize multi-taps without firing
 * a single tap.
 *
 * The eventData from the emitted event contains the property `tapCount`, which contains the amount of
 * multi-taps being recognized.
 * @constructor
 * @extends Recognizer
 */
function TapRecognizer() {
    Recognizer.apply(this, arguments);

    // previous time and center,
    // used for tap counting
    this.pTime = false;
    this.pCenter = false;

    this._timer = null;
    this._input = null;
    this.count = 0;
}

inherit(TapRecognizer, Recognizer, {
    /**
     * @namespace
     * @memberof PinchRecognizer
     */
    defaults: {
        event: 'tap',
        pointers: 1,
        taps: 1,
        interval: 300, // max time between the multi-tap taps
        time: 250, // max time of the pointer to be down (like finger on the screen)
        threshold: 2, // a minimal movement is ok, but keep it low
        posThreshold: 10 // a multi-tap can be a bit off the initial position
    },

    getTouchAction: function() {
        return [TOUCH_ACTION_MANIPULATION];
    },

    process: function(input) {
        var options = this.options;

        var validPointers = input.pointers.length === options.pointers;
        var validMovement = input.distance < options.threshold;
        var validTouchTime = input.deltaTime < options.time;

        this.reset();

        if ((input.eventType & INPUT_START) && (this.count === 0)) {
            return this.failTimeout();
        }

        // we only allow little movement
        // and we've reached an end event, so a tap is possible
        if (validMovement && validTouchTime && validPointers) {
            if (input.eventType != INPUT_END) {
                return this.failTimeout();
            }

            var validInterval = this.pTime ? (input.timeStamp - this.pTime < options.interval) : true;
            var validMultiTap = !this.pCenter || getDistance(this.pCenter, input.center) < options.posThreshold;

            this.pTime = input.timeStamp;
            this.pCenter = input.center;

            if (!validMultiTap || !validInterval) {
                this.count = 1;
            } else {
                this.count += 1;
            }

            this._input = input;

            // if tap count matches we have recognized it,
            // else it has began recognizing...
            var tapCount = this.count % options.taps;
            if (tapCount === 0) {
                // no failing requirements, immediately trigger the tap event
                // or wait as long as the multitap interval to trigger
                if (!this.hasRequireFailures()) {
                    return STATE_RECOGNIZED;
                } else {
                    this._timer = setTimeoutContext(function() {
                        this.state = STATE_RECOGNIZED;
                        this.tryEmit();
                    }, options.interval, this);
                    return STATE_BEGAN;
                }
            }
        }
        return STATE_FAILED;
    },

    failTimeout: function() {
        this._timer = setTimeoutContext(function() {
            this.state = STATE_FAILED;
        }, this.options.interval, this);
        return STATE_FAILED;
    },

    reset: function() {
        clearTimeout(this._timer);
    },

    emit: function() {
        if (this.state == STATE_RECOGNIZED ) {
            this._input.tapCount = this.count;
            this.manager.emit(this.options.event, this._input);
        }
    }
});

/**
 * Simple way to create an manager with a default set of recognizers.
 * @param {HTMLElement} element
 * @param {Object} [options]
 * @constructor
 */
function Hammer(element, options) {
    options = options || {};
    options.recognizers = ifUndefined(options.recognizers, Hammer.defaults.preset);
    return new Manager(element, options);
}

/**
 * @const {string}
 */
Hammer.VERSION = '2.0.4';

/**
 * default settings
 * @namespace
 */
Hammer.defaults = {
    /**
     * set if DOM events are being triggered.
     * But this is slower and unused by simple implementations, so disabled by default.
     * @type {Boolean}
     * @default false
     */
    domEvents: false,

    /**
     * The value for the touchAction property/fallback.
     * When set to `compute` it will magically set the correct value based on the added recognizers.
     * @type {String}
     * @default compute
     */
    touchAction: TOUCH_ACTION_COMPUTE,

    /**
     * @type {Boolean}
     * @default true
     */
    enable: true,

    /**
     * EXPERIMENTAL FEATURE -- can be removed/changed
     * Change the parent input target element.
     * If Null, then it is being set the to main element.
     * @type {Null|EventTarget}
     * @default null
     */
    inputTarget: null,

    /**
     * force an input class
     * @type {Null|Function}
     * @default null
     */
    inputClass: null,

    /**
     * Default recognizer setup when calling `Hammer()`
     * When creating a new Manager these will be skipped.
     * @type {Array}
     */
    preset: [
        // RecognizerClass, options, [recognizeWith, ...], [requireFailure, ...]
        [RotateRecognizer, { enable: false }],
        [PinchRecognizer, { enable: false }, ['rotate']],
        [SwipeRecognizer,{ direction: DIRECTION_HORIZONTAL }],
        [PanRecognizer, { direction: DIRECTION_HORIZONTAL }, ['swipe']],
        [TapRecognizer],
        [TapRecognizer, { event: 'doubletap', taps: 2 }, ['tap']],
        [PressRecognizer]
    ],

    /**
     * Some CSS properties can be used to improve the working of Hammer.
     * Add them to this method and they will be set when creating a new Manager.
     * @namespace
     */
    cssProps: {
        /**
         * Disables text selection to improve the dragging gesture. Mainly for desktop browsers.
         * @type {String}
         * @default 'none'
         */
        userSelect: 'none',

        /**
         * Disable the Windows Phone grippers when pressing an element.
         * @type {String}
         * @default 'none'
         */
        touchSelect: 'none',

        /**
         * Disables the default callout shown when you touch and hold a touch target.
         * On iOS, when you touch and hold a touch target such as a link, Safari displays
         * a callout containing information about the link. This property allows you to disable that callout.
         * @type {String}
         * @default 'none'
         */
        touchCallout: 'none',

        /**
         * Specifies whether zooming is enabled. Used by IE10>
         * @type {String}
         * @default 'none'
         */
        contentZooming: 'none',

        /**
         * Specifies that an entire element should be draggable instead of its contents. Mainly for desktop browsers.
         * @type {String}
         * @default 'none'
         */
        userDrag: 'none',

        /**
         * Overrides the highlight color shown when the user taps a link or a JavaScript
         * clickable element in iOS. This property obeys the alpha value, if specified.
         * @type {String}
         * @default 'rgba(0,0,0,0)'
         */
        tapHighlightColor: 'rgba(0,0,0,0)'
    }
};

var STOP = 1;
var FORCED_STOP = 2;

/**
 * Manager
 * @param {HTMLElement} element
 * @param {Object} [options]
 * @constructor
 */
function Manager(element, options) {
    options = options || {};

    this.options = merge(options, Hammer.defaults);
    this.options.inputTarget = this.options.inputTarget || element;

    this.handlers = {};
    this.session = {};
    this.recognizers = [];

    this.element = element;
    this.input = createInputInstance(this);
    this.touchAction = new TouchAction(this, this.options.touchAction);

    toggleCssProps(this, true);

    each(options.recognizers, function(item) {
        var recognizer = this.add(new (item[0])(item[1]));
        item[2] && recognizer.recognizeWith(item[2]);
        item[3] && recognizer.requireFailure(item[3]);
    }, this);
}

Manager.prototype = {
    /**
     * set options
     * @param {Object} options
     * @returns {Manager}
     */
    set: function(options) {
        extend(this.options, options);

        // Options that need a little more setup
        if (options.touchAction) {
            this.touchAction.update();
        }
        if (options.inputTarget) {
            // Clean up existing event listeners and reinitialize
            this.input.destroy();
            this.input.target = options.inputTarget;
            this.input.init();
        }
        return this;
    },

    /**
     * stop recognizing for this session.
     * This session will be discarded, when a new [input]start event is fired.
     * When forced, the recognizer cycle is stopped immediately.
     * @param {Boolean} [force]
     */
    stop: function(force) {
        this.session.stopped = force ? FORCED_STOP : STOP;
    },

    /**
     * run the recognizers!
     * called by the inputHandler function on every movement of the pointers (touches)
     * it walks through all the recognizers and tries to detect the gesture that is being made
     * @param {Object} inputData
     */
    recognize: function(inputData) {
        var session = this.session;
        if (session.stopped) {
            return;
        }

        // run the touch-action polyfill
        this.touchAction.preventDefaults(inputData);

        var recognizer;
        var recognizers = this.recognizers;

        // this holds the recognizer that is being recognized.
        // so the recognizer's state needs to be BEGAN, CHANGED, ENDED or RECOGNIZED
        // if no recognizer is detecting a thing, it is set to `null`
        var curRecognizer = session.curRecognizer;

        // reset when the last recognizer is recognized
        // or when we're in a new session
        if (!curRecognizer || (curRecognizer && curRecognizer.state & STATE_RECOGNIZED)) {
            curRecognizer = session.curRecognizer = null;
        }

        var i = 0;
        while (i < recognizers.length) {
            recognizer = recognizers[i];

            // find out if we are allowed try to recognize the input for this one.
            // 1.   allow if the session is NOT forced stopped (see the .stop() method)
            // 2.   allow if we still haven't recognized a gesture in this session, or the this recognizer is the one
            //      that is being recognized.
            // 3.   allow if the recognizer is allowed to run simultaneous with the current recognized recognizer.
            //      this can be setup with the `recognizeWith()` method on the recognizer.
            if (session.stopped !== FORCED_STOP && ( // 1
                    !curRecognizer || recognizer == curRecognizer || // 2
                    recognizer.canRecognizeWith(curRecognizer))) { // 3
                recognizer.recognize(inputData);
            } else {
                recognizer.reset();
            }

            // if the recognizer has been recognizing the input as a valid gesture, we want to store this one as the
            // current active recognizer. but only if we don't already have an active recognizer
            if (!curRecognizer && recognizer.state & (STATE_BEGAN | STATE_CHANGED | STATE_ENDED)) {
                curRecognizer = session.curRecognizer = recognizer;
            }
            i++;
        }
    },

    /**
     * get a recognizer by its event name.
     * @param {Recognizer|String} recognizer
     * @returns {Recognizer|Null}
     */
    get: function(recognizer) {
        if (recognizer instanceof Recognizer) {
            return recognizer;
        }

        var recognizers = this.recognizers;
        for (var i = 0; i < recognizers.length; i++) {
            if (recognizers[i].options.event == recognizer) {
                return recognizers[i];
            }
        }
        return null;
    },

    /**
     * add a recognizer to the manager
     * existing recognizers with the same event name will be removed
     * @param {Recognizer} recognizer
     * @returns {Recognizer|Manager}
     */
    add: function(recognizer) {
        if (invokeArrayArg(recognizer, 'add', this)) {
            return this;
        }

        // remove existing
        var existing = this.get(recognizer.options.event);
        if (existing) {
            this.remove(existing);
        }

        this.recognizers.push(recognizer);
        recognizer.manager = this;

        this.touchAction.update();
        return recognizer;
    },

    /**
     * remove a recognizer by name or instance
     * @param {Recognizer|String} recognizer
     * @returns {Manager}
     */
    remove: function(recognizer) {
        if (invokeArrayArg(recognizer, 'remove', this)) {
            return this;
        }

        var recognizers = this.recognizers;
        recognizer = this.get(recognizer);
        recognizers.splice(inArray(recognizers, recognizer), 1);

        this.touchAction.update();
        return this;
    },

    /**
     * bind event
     * @param {String} events
     * @param {Function} handler
     * @returns {EventEmitter} this
     */
    on: function(events, handler) {
        var handlers = this.handlers;
        each(splitStr(events), function(event) {
            handlers[event] = handlers[event] || [];
            handlers[event].push(handler);
        });
        return this;
    },

    /**
     * unbind event, leave emit blank to remove all handlers
     * @param {String} events
     * @param {Function} [handler]
     * @returns {EventEmitter} this
     */
    off: function(events, handler) {
        var handlers = this.handlers;
        each(splitStr(events), function(event) {
            if (!handler) {
                delete handlers[event];
            } else {
                handlers[event].splice(inArray(handlers[event], handler), 1);
            }
        });
        return this;
    },

    /**
     * emit event to the listeners
     * @param {String} event
     * @param {Object} data
     */
    emit: function(event, data) {
        // we also want to trigger dom events
        if (this.options.domEvents) {
            triggerDomEvent(event, data);
        }

        // no handlers, so skip it all
        var handlers = this.handlers[event] && this.handlers[event].slice();
        if (!handlers || !handlers.length) {
            return;
        }

        data.type = event;
        data.preventDefault = function() {
            data.srcEvent.preventDefault();
        };

        var i = 0;
        while (i < handlers.length) {
            handlers[i](data);
            i++;
        }
    },

    /**
     * destroy the manager and unbinds all events
     * it doesn't unbind dom events, that is the user own responsibility
     */
    destroy: function() {
        this.element && toggleCssProps(this, false);

        this.handlers = {};
        this.session = {};
        this.input.destroy();
        this.element = null;
    }
};

/**
 * add/remove the css properties as defined in manager.options.cssProps
 * @param {Manager} manager
 * @param {Boolean} add
 */
function toggleCssProps(manager, add) {
    var element = manager.element;
    each(manager.options.cssProps, function(value, name) {
        element.style[prefixed(element.style, name)] = add ? value : '';
    });
}

/**
 * trigger dom event
 * @param {String} event
 * @param {Object} data
 */
function triggerDomEvent(event, data) {
    var gestureEvent = document.createEvent('Event');
    gestureEvent.initEvent(event, true, true);
    gestureEvent.gesture = data;
    data.target.dispatchEvent(gestureEvent);
}

extend(Hammer, {
    INPUT_START: INPUT_START,
    INPUT_MOVE: INPUT_MOVE,
    INPUT_END: INPUT_END,
    INPUT_CANCEL: INPUT_CANCEL,

    STATE_POSSIBLE: STATE_POSSIBLE,
    STATE_BEGAN: STATE_BEGAN,
    STATE_CHANGED: STATE_CHANGED,
    STATE_ENDED: STATE_ENDED,
    STATE_RECOGNIZED: STATE_RECOGNIZED,
    STATE_CANCELLED: STATE_CANCELLED,
    STATE_FAILED: STATE_FAILED,

    DIRECTION_NONE: DIRECTION_NONE,
    DIRECTION_LEFT: DIRECTION_LEFT,
    DIRECTION_RIGHT: DIRECTION_RIGHT,
    DIRECTION_UP: DIRECTION_UP,
    DIRECTION_DOWN: DIRECTION_DOWN,
    DIRECTION_HORIZONTAL: DIRECTION_HORIZONTAL,
    DIRECTION_VERTICAL: DIRECTION_VERTICAL,
    DIRECTION_ALL: DIRECTION_ALL,

    Manager: Manager,
    Input: Input,
    TouchAction: TouchAction,

    TouchInput: TouchInput,
    MouseInput: MouseInput,
    PointerEventInput: PointerEventInput,
    TouchMouseInput: TouchMouseInput,
    SingleTouchInput: SingleTouchInput,

    Recognizer: Recognizer,
    AttrRecognizer: AttrRecognizer,
    Tap: TapRecognizer,
    Pan: PanRecognizer,
    Swipe: SwipeRecognizer,
    Pinch: PinchRecognizer,
    Rotate: RotateRecognizer,
    Press: PressRecognizer,

    on: addEventListeners,
    off: removeEventListeners,
    each: each,
    merge: merge,
    extend: extend,
    inherit: inherit,
    bindFn: bindFn,
    prefixed: prefixed
});

if (typeof define == TYPE_FUNCTION && define.amd) {
    define(function() {
        return Hammer;
    });
} else if (typeof module != 'undefined' && module.exports) {
    module.exports = Hammer;
} else {
    window[exportName] = Hammer;
}

})(window, document, 'Hammer');

jquery.photoClip.js

/**
 * jQuery photoClip v1.5.1
 * 依赖插件
 * - iscroll-zoom.js
 * - hammer.js
 *
 * @author 白俊杰 [email protected] 2014/07/31
 * https://github.com/baijunjie/jQuery-photoClip
 *
 * @brief	支持手势的裁图插件
 *			在移动设备上双指捏合为缩放，双指旋转可根据旋转方向每次旋转90度
 *			在PC设备上鼠标滚轮为缩放，每次双击则顺时针旋转90度
 * @option_param {number} width 截取区域的宽度
 * @option_param {number} height 截取区域的高度
 * @option_param {string} file 上传图片的控件的选择器或者DOM对象
 * @option_param {string} view 显示截取后图像的容器的选择器或者DOM对象
 * @option_param {string} ok 确认截图按钮的选择器或者DOM对象
 * @option_param {string} outputType 指定输出图片的类型，可选 "jpg" 和 "png" 两种种类型，默认为 "jpg"
 * @option_param {boolean} strictSize 是否严格按照截取区域宽高裁剪。默认为false，表示截取区域宽高仅用于约束宽高比例。如果设置为true，则表示截取出的图像宽高严格按照截取区域宽高输出
 * @option_param {function} loadStart 开始加载的回调函数。this指向 fileReader 对象，并将正在加载的 file 对象作为参数传入
 * @option_param {function} loadComplete 加载完成的回调函数。this指向图片对象，并将图片地址作为参数传入
 * @option_param {function} loadError 加载失败的回调函数。this指向 fileReader 对象，并将错误事件的 event 对象作为参数传入
 * @option_param {function} clipFinish 裁剪完成的回调函数。this指向图片对象，会将裁剪出的图像数据DataURL作为参数传入
 */

(function(root, factory) {
	"use strict";

	if (typeof define === "function" && define.amd) {
		define(["jquery", "iscroll-zoom", "hammer"], factory);
	} else if (typeof exports === "object") {
		module.exports = factory(require("jquery"), require("iscroll-zoom"), require("hammer"));
	} else {
		factory(root.jQuery, root.IScroll, root.Hammer);
	}

}(this, function($, IScroll, Hammer) {
	"use strict";

	$.fn.photoClip = function(option) {
		if (!window.FileReader) {
			alert("您的浏览器不支持 HTML5 的 FileReader API， 因此无法初始化图片裁剪插件，请更换最新的浏览器！");
			return;
		}

		var defaultOption = {
			width: 200,
			height: 200,
			file: "",
			view: "",
			ok: "",
			outputType: "jpg",
			strictSize: false,
			loadStart: function() {},
			loadComplete: function() {},
			loadError: function() {},
			clipFinish: function() {}
		}
		$.extend(defaultOption, option);

		this.each(function() {
			photoClip(this, defaultOption);
		});

		return this;
	}

	function photoClip(container, option) {
		var clipWidth = option.width,
			clipHeight = option.height,
			file = option.file,
			view = option.view,
			ok = option.ok,
			outputType = option.outputType || "image/jpeg",
			strictSize = option.strictSize,
			loadStart = option.loadStart,
			loadComplete = option.loadComplete,
			loadError = option.loadError,
			clipFinish = option.clipFinish;

		if (outputType === "jpg") {
			outputType = "image/jpeg";
		} else if (outputType === "png") {
			outputType = "image/png";
		}

		var $file = $(file);
		if (!$file.length) return;

		var $img,
			imgWidth, imgHeight, //图片当前的宽高
			imgLoaded; //图片是否已经加载完成

		$file.attr("accept", "image/*");
		$file.change(function() {
			if (!this.files.length) return;
			if (!/image\/\w+/.test(this.files[0].type)) {
				alert("图片格式不正确，请选择正确格式的图片文件！");
				return false;
			} else {
				var fileReader = new FileReader();
				fileReader.onprogress = function(e) {
					console.log((e.loaded / e.total * 100).toFixed() + "%");
				};
				fileReader.onload = function(e) {
					var kbs = e.total / 1024;
					if (kbs > 1024) {
						// 图片大于1M，需要压缩
						var quality = 1024 / kbs;
						var $tempImg = $("").hide();
						$tempImg.load(function() {
							// IOS 设备中，如果的照片是竖屏拍摄的，虽然实际在网页中显示出的方向也是垂直，但图片数据依然是以横屏方向展示
							var sourceWidth = this.naturalWidth; // 在没有加入文档前，jQuery无法获得正确宽高，但可以通过原生属性来读取
							$tempImg.appendTo(document.body);
							var realityHeight = this.naturalHeight;
							$tempImg.remove();
							delete $tempImg[0];
							$tempImg = null;
							var angleOffset = 0;
							if (sourceWidth == realityHeight) {
								angleOffset = 90;
							}
							// 将图片进行压缩
							var newDataURL = compressImg(this, quality, angleOffset, outputType);
							createImg(newDataURL);
						});
						$tempImg.attr("src", this.result);
					} else {
						createImg(this.result);
					}
				};
				fileReader.onerror = function(e) {
					alert("图片加载失败");
					loadError.call(this, e);
				};
				fileReader.readAsDataURL(this.files[0]); // 读取文件内容

				loadStart.call(fileReader, this.files[0]);
			}
		});

		$file.click(function() {
			this.value = "";
		});



		var $container, // 容器，包含裁剪视图层和遮罩层
			$clipView, // 裁剪视图层，包含移动层
			$moveLayer, // 移动层，包含旋转层
			$rotateLayer, // 旋转层
			$view, // 最终截图后呈现的视图容器
			canvas, // 图片裁剪用到的画布
			myScroll, // 图片的scroll对象，包含图片的位置与缩放信息
			containerWidth,
			containerHeight;

		init();
		initScroll();
		initEvent();
		initClip();

		var $ok = $(ok);
		if ($ok.length) {
			$ok.click(function() {
				clipImg();
			});
		}

		var $win = $(window);
		resize();
		$win.resize(resize);

		var atRotation, // 是否正在旋转中
			curX, // 旋转层的当前X坐标
			curY, // 旋转层的当前Y坐标
			curAngle; // 旋转层的当前角度

		function imgLoad() {
			imgLoaded = true;

			$rotateLayer.append(this);

			hideAction.call(this, $img, function() {
				imgWidth = this.naturalWidth;
				imgHeight = this.naturalHeight;
			});

			hideAction($moveLayer, function() {
				resetScroll();
			});


			loadComplete.call(this, this.src);
		}

		function initScroll() {
			var options = {
				zoom: true,
				scrollX: true,
				scrollY: true,
				freeScroll: true,
				mouseWheel: true,
				wheelAction: "zoom"
			}
			myScroll = new IScroll($clipView[0], options);
		}
		function resetScroll() {
			curX = 0;
			curY = 0;
			curAngle = 0;

			$rotateLayer.css({
				"width": imgWidth,
				"height": imgHeight
			});
			setTransform($rotateLayer, curX, curY, curAngle);

			calculateScale(imgWidth, imgHeight);
			myScroll.zoom(myScroll.options.zoomStart);
			refreshScroll(imgWidth, imgHeight);

			var posX = (clipWidth - imgWidth * myScroll.options.zoomStart) * .5,
				posY = (clipHeight - imgHeight * myScroll.options.zoomStart) * .5;
			myScroll.scrollTo(posX, posY);
		}
		function refreshScroll(width, height) {
			$moveLayer.css({
				"width": width,
				"height": height
			});
			// 在移动设备上，尤其是Android设备，当为一个元素重置了宽高时
			// 该元素的offsetWidth/offsetHeight、clientWidth/clientHeight等属性并不会立即更新，导致相关的js程序出现错误
			// iscroll 在刷新方法中正是使用了 offsetWidth/offsetHeight 来获取scroller元素($moveLayer)的宽高
			// 因此需要手动将元素重新添加进文档，迫使浏览器强制更新元素的宽高
			$clipView.append($moveLayer);
			myScroll.refresh();
		}

		function initEvent() {
			var is_mobile = !!navigator.userAgent.match(/mobile/i);

			if (is_mobile) {
				var hammerManager = new Hammer($moveLayer[0]);
				hammerManager.add(new Hammer.Rotate());

				var rotation, rotateDirection;
				hammerManager.on("rotatemove", function(e) {
					if (atRotation) return;
					rotation = e.rotation;
					if (rotation > 180) {
						rotation -= 360;
					} else if (rotation < -180) {
						rotation += 360  ;
					}
					rotateDirection = rotation > 0 ? 1 : rotation < 0 ? -1 : 0;
				});
				hammerManager.on("rotateend", function(e) {
					if (atRotation) return;

					if (Math.abs(rotation) > 30) {
						if (rotateDirection == 1) {
							// 顺时针
							rotateCW(e.center);
						} else if (rotateDirection == -1) {
							// 逆时针
							rotateCCW(e.center);
						}
					}
				});
			} else {
				$moveLayer.on("dblclick", function(e) {
					rotateCW({
						x: e.clientX,
						y: e.clientY
					});
				});
			}
		}
		function rotateCW(point) {
			rotateBy(90, point);
		}
		function rotateCCW(point) {
			rotateBy(-90, point);
		}
		function rotateBy(angle, point) {
			if (atRotation) return;
			atRotation = true;

			var loacl;
			if (!point) {
				loacl = loaclToLoacl($moveLayer, $clipView, clipWidth * .5, clipHeight * .5);
			} else {
				loacl = globalToLoacl($moveLayer, point.x, point.y);
			}
			var origin = calculateOrigin(curAngle, loacl), // 旋转中使用的参考点坐标
				originX = origin.x,
				originY = origin.y,

				// 旋转层以零位为参考点旋转到新角度后的位置，与以当前计算的参考点“从零度”旋转到新角度后的位置，之间的左上角偏移量
				offsetX = 0, offsetY = 0,
				// 移动层当前的位置（即旋转层旋转前的位置），与旋转层以当前计算的参考点从当前角度旋转到新角度后的位置，之间的左上角偏移量
				parentOffsetX = 0, parentOffsetY = 0,

				newAngle = curAngle + angle,

				curImgWidth, // 移动层的当前宽度
				curImgHeight; // 移动层的当前高度


			if (newAngle == 90 || newAngle == -270)
			{
				offsetX = originX + originY;
				offsetY = originY - originX;

				if (newAngle > curAngle) {
					parentOffsetX = imgHeight - originX - originY;
					parentOffsetY = originX - originY;
				} else if (newAngle < curAngle) {
					parentOffsetX = (imgHeight - originY) - (imgWidth - originX);
					parentOffsetY = originX + originY - imgHeight;
				}

				curImgWidth = imgHeight;
				curImgHeight = imgWidth;
			}
			else if (newAngle == 180 || newAngle == -180)
			{
				offsetX = originX * 2;
				offsetY = originY * 2;

				if (newAngle > curAngle) {
					parentOffsetX = (imgWidth - originX) - (imgHeight - originY);
					parentOffsetY = imgHeight - (originX + originY);
				} else if (newAngle < curAngle) {
					parentOffsetX = imgWidth - (originX + originY);
					parentOffsetY = (imgHeight - originY) - (imgWidth - originX);
				}

				curImgWidth = imgWidth;
				curImgHeight = imgHeight;
			}
			else if (newAngle == 270 || newAngle == -90)
			{
				offsetX = originX - originY;
				offsetY = originX + originY;

				if (newAngle > curAngle) {
					parentOffsetX = originX + originY - imgWidth;
					parentOffsetY = (imgWidth - originX) - (imgHeight - originY);
				} else if (newAngle < curAngle) {
					parentOffsetX = originY - originX;
					parentOffsetY = imgWidth - originX - originY;
				}

				curImgWidth = imgHeight;
				curImgHeight = imgWidth;
			}
			else if (newAngle == 0 || newAngle == 360 || newAngle == -360)
			{
				offsetX = 0;
				offsetY = 0;

				if (newAngle > curAngle) {
					parentOffsetX = originX - originY;
					parentOffsetY = originX + originY - imgWidth;
				} else if (newAngle < curAngle) {
					parentOffsetX = originX + originY - imgHeight;
					parentOffsetY = originY - originX;
				}

				curImgWidth = imgWidth;
				curImgHeight = imgHeight;
			}

			// 将触摸点设为旋转时的参考点
			// 改变参考点的同时，要计算坐标的偏移，从而保证图片位置不发生变化
			if (curAngle == 0) {
				curX = 0;
				curY = 0;
			} else if (curAngle == 90 || curAngle == -270) {
				curX -= originX + originY;
				curY -= originY - originX;
			} else if (curAngle == 180 || curAngle == -180) {
				curX -= originX * 2;
				curY -= originY * 2;
			} else if (curAngle == 270 || curAngle == -90) {
				curX -= originX - originY;
				curY -= originX + originY;
			}
			curX = curX.toFixed(2) - 0;
			curY = curY.toFixed(2) - 0;
			setTransform($rotateLayer, curX, curY, curAngle, originX, originY);

			// 开始旋转
			setTransition($rotateLayer, curX, curY, newAngle, 200, function() {
				atRotation = false;
				curAngle = newAngle % 360;
				// 旋转完成后将参考点设回零位
				// 同时加上偏移，保证图片位置看上去没有变化
				// 这里要另外要加上父容器（移动层）零位与自身之间的偏移量
				curX += offsetX + parentOffsetX;
				curY += offsetY + parentOffsetY;
				curX = curX.toFixed(2) - 0;
				curY = curY.toFixed(2) - 0;
				setTransform($rotateLayer, curX, curY, curAngle);
				// 相应的父容器（移动层）要减去与旋转层之间的偏移量
				// 这样看上去就好像图片没有移动
				myScroll.scrollTo(
					myScroll.x - parentOffsetX * myScroll.scale,
					myScroll.y - parentOffsetY * myScroll.scale
				);
				calculateScale(curImgWidth, curImgHeight);
				if (myScroll.scale < myScroll.options.zoomMin) {
					myScroll.zoom(myScroll.options.zoomMin);
				}

				refreshScroll(curImgWidth, curImgHeight);
			});
		}

		function initClip() {
			canvas = document.createElement("canvas");
			canvas.width = clipWidth;
			canvas.height = clipHeight;
		}
		function clipImg() {
			if (!imgLoaded) {
				alert("亲，当前没有图片可以裁剪!");
				return;
			}
			var local = loaclToLoacl($moveLayer, $clipView);
			var scale = myScroll.scale;
			var ctx = canvas.getContext("2d");
			ctx.clearRect(0, 0, canvas.width, canvas.height);
			ctx.save();

			if (strictSize) {
				ctx.scale(scale, scale);
			} else {
				canvas.width = clipWidth / scale;
				canvas.height = clipHeight / scale;
			}

			ctx.translate(curX - local.x / scale, curY - local.y / scale);
			ctx.rotate(curAngle * Math.PI / 180);

			ctx.drawImage($img[0], 0, 0);
			ctx.restore();

			var dataURL = canvas.toDataURL(outputType, 1);
			$view.css("background-image", "url("+ dataURL +")");
			clipFinish.call($img[0], dataURL);
		}


		function resize() {
			hideAction($container, function() {
				containerWidth = $container.width();
				containerHeight = $container.height();
			});
		}
		function loaclToLoacl($layerOne, $layerTwo, x, y) { // 计算$layerTwo上的x、y坐标在$layerOne上的坐标
			x = x || 0;
			y = y || 0;
			var layerOneOffset, layerTwoOffset;
			hideAction($layerOne, function() {
				layerOneOffset = $layerOne.offset();
			});
			hideAction($layerTwo, function() {
				layerTwoOffset = $layerTwo.offset();
			});
			return {
				x: layerTwoOffset.left - layerOneOffset.left + x,
				y: layerTwoOffset.top - layerOneOffset.top + y
			};
		}
		function globalToLoacl($layer, x, y) { // 计算相对于窗口的x、y坐标在$layer上的坐标
			x = x || 0;
			y = y || 0;
			var layerOffset;
			hideAction($layer, function() {
				layerOffset = $layer.offset();
			});
			return {
				x: x + $win.scrollLeft() - layerOffset.left,
				y: y + $win.scrollTop() - layerOffset.top
			};
		}
		function hideAction(jq, func) {
			var $hide = $();
			$.each(jq, function(i, n){
				var $n = $(n);
				var $hidden = $n.parents().andSelf().filter(":hidden");
				var $none;
				for (var i = 0; i < $hidden.length; i++) {
					if (!$n.is(":hidden")) break;
					$none = $hidden.eq(i);
					if ($none.css("display") == "none") $hide = $hide.add($none.show());
				}
			});
			if (typeof(func) == "function") func.call(this);
			$hide.hide();
		}
		function calculateOrigin(curAngle, point) {
			var scale = myScroll.scale;
			var origin = {};
			if (curAngle == 0) {
				origin.x = point.x / scale;
				origin.y = point.y / scale;
			} else if (curAngle == 90 || curAngle == -270) {
				origin.x = point.y / scale;
				origin.y = imgHeight - point.x / scale;
			} else if (curAngle == 180 || curAngle == -180) {
				origin.x = imgWidth - point.x / scale;
				origin.y = imgHeight - point.y / scale;
			} else if (curAngle == 270 || curAngle == -90) {
				origin.x = imgWidth - point.y / scale;
				origin.y = point.x / scale;
			}
			return origin;
		}
		function getScale(w1, h1, w2, h2) {
			var sx = w1 / w2;
			var sy = h1 / h2;
			return sx > sy ? sx : sy;
		}
		function calculateScale(width, height) {
			myScroll.options.zoomMin = getScale(clipWidth, clipHeight, width, height);
			myScroll.options.zoomMax = Math.max(1, myScroll.options.zoomMin);
			myScroll.options.zoomStart = Math.min(myScroll.options.zoomMax, getScale(containerWidth, containerHeight, width, height));
		}
		function compressImg(sourceImgObj, quality, angleOffset, outputFormat){
			quality = quality || .8;
			angleOffset = angleOffset || 0;
			var mimeType = outputFormat || "image/jpeg";

			var drawWidth = sourceImgObj.naturalWidth,
				drawHeight = sourceImgObj.naturalHeight;
			// IOS 设备上 canvas 宽或高如果大于 1024，就有可能导致应用崩溃闪退
			// 因此这里需要缩放
			var maxSide = Math.max(drawWidth, drawHeight);
			if (maxSide > 1024) {
				var minSide = Math.min(drawWidth, drawHeight);
				minSide = minSide / maxSide * 1024;
				maxSide = 1024;
				if (drawWidth > drawHeight) {
					drawWidth = maxSide;
					drawHeight = minSide;
				} else {
					drawWidth = minSide;
					drawHeight = maxSide;
				}
			}

			var cvs = document.createElement('canvas');
			var ctx = cvs.getContext("2d");
			if (angleOffset) {
				cvs.width = drawHeight;
				cvs.height = drawWidth;
				ctx.translate(drawHeight, 0);
				ctx.rotate(angleOffset * Math.PI / 180);
			} else {
				cvs.width = drawWidth;
				cvs.height = drawHeight;
			}

			ctx.drawImage(sourceImgObj, 0, 0, drawWidth, drawHeight);
			var newImageData = cvs.toDataURL(mimeType, quality || .8);
			return newImageData;
		}
		function createImg(src) {
			if ($img &&　$img.length) {
				// 删除旧的图片以释放内存，防止IOS设备的webview崩溃
				$img.remove();
				delete $img[0];
			}
			$img = $("").css({
				"user-select": "none",
				"pointer-events": "none"
			});
			$img.load(imgLoad);
			$img.attr("src", src); // 设置图片base64值
		}

		function setTransform($obj, x, y, angle, originX, originY) {
			originX = originX || 0;
			originY = originY || 0;
			var style = {};
			style[prefix + "transform"] = "translateZ(0) translate(" + x + "px," + y + "px) rotate(" + angle + "deg)";
			style[prefix + "transform-origin"] = originX + "px " + originY + "px";
			$obj.css(style);
		}
		function setTransition($obj, x, y, angle, dur, fn) {
			// 这里需要先读取之前设置好的transform样式，强制浏览器将该样式值渲染到元素
			// 否则浏览器可能出于性能考虑，将暂缓样式渲染，等到之后所有样式设置完成后再统一渲染
			// 这样就会导致之前设置的位移也被应用到动画中
			$obj.css(prefix + "transform");
			$obj.css(prefix + "transition", prefix + "transform " + dur + "ms");
			$obj.one(transitionEnd, function() {
				$obj.css(prefix + "transition", "");
				fn.call(this);
			});
			$obj.css(prefix + "transform", "translateZ(0) translate(" + x + "px," + y + "px) rotate(" + angle + "deg)");
		}

		function init() {
			// 初始化容器
			$container = $(container).css({
				"user-select": "none",
				"overflow": "hidden"
			});
			if ($container.css("position") == "static") $container.css("position", "relative");

			// 创建裁剪视图层
			$clipView = $("
").css({
				"position": "absolute",
				"left": "50%",
				"top": "50%",
				"width": clipWidth,
				"height": clipHeight,
				"margin-left": -clipWidth/2,
				"margin-top": -clipHeight/2
			}).appendTo($container);

			$moveLayer = $("
").appendTo($clipView);

			$rotateLayer = $("
").appendTo($moveLayer);

			// 创建遮罩
			var $mask = $("
").css({
				"position": "absolute",
				"left": 0,
				"top": 0,
				"width": "100%",
				"height": "100%",
				"pointer-events": "none"
			}).appendTo($container);
			var $mask_left = $("
").css({
				"position": "absolute",
				"left": 0,
				"right": "50%",
				"top": "50%",
				"bottom": "50%",
				"width": "auto",
				"height": clipHeight,
				"margin-right": clipWidth/2,
				"margin-top": -clipHeight/2,
				"margin-bottom": -clipHeight/2,
				"background-color": "rgba(0,0,0,.5)"
			}).appendTo($mask);
			var $mask_right = $("
").css({
				"position": "absolute",
				"left": "50%",
				"right": 0,
				"top": "50%",
				"bottom": "50%",
				"margin-left": clipWidth/2,
				"margin-top": -clipHeight/2,
				"margin-bottom": -clipHeight/2,
				"background-color": "rgba(0,0,0,.5)"
			}).appendTo($mask);
			var $mask_top = $("
").css({
				"position": "absolute",
				"left": 0,
				"right": 0,
				"top": 0,
				"bottom": "50%",
				"margin-bottom": clipHeight/2,
				"background-color": "rgba(0,0,0,.5)"
			}).appendTo($mask);
			var $mask_bottom = $("
").css({
				"position": "absolute",
				"left": 0,
				"right": 0,
				"top": "50%",
				"bottom": 0,
				"margin-top": clipHeight/2,
				"background-color": "rgba(0,0,0,.5)"
			}).appendTo($mask);
			// 创建截取区域
			var $clip_area = $("
").css({
				"border": "1px dashed #ddd",
				"position": "absolute",
				"left": "50%",
				"top": "50%",
				"width": clipWidth,
				"height": clipHeight,
				"margin-left": -clipWidth/2 - 1,
				"margin-top": -clipHeight/2 - 1
			}).appendTo($mask);

			// 初始化视图容器
			$view = $(view);
			if ($view.length) {
				$view.css({
					"background-color": "#666",
					"background-repeat": "no-repeat",
					"background-position": "center",
					"background-size": "contain"
				});
			}
		}
	}

	var prefix = '',
		transitionEnd;

	(function() {

		var eventPrefix,
			vendors = { Webkit: 'webkit', Moz: '', O: 'o' },
	    	testEl = document.documentElement,
	    	normalizeEvent = function(name) { return eventPrefix ? eventPrefix + name : name.toLowerCase() };

		for (var i in vendors) {
			if (testEl.style[i + 'TransitionProperty'] !== undefined) {
				prefix = '-' + i.toLowerCase() + '-';
				eventPrefix = vendors[i];
				break;
			}
		}

		transitionEnd = normalizeEvent('TransitionEnd');

	})();

	return $;
}));


后端部分待续……