移动端html
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>测试html</title>
<!--<link href="TestCss.css" rel="stylesheet" type="text/css" />-->
<script src="jquery-2.1.1.min.js" type="text/javascript"></script>
<script src="TestJavaScript.js" type="text/javascript"></script>
</head>
<body class="home">
<form id="form1">
<input id="imgFaceUrl" name="imgFaceUrl" onchange="gestureImage()" style="display: none;" type="file" />
<a id="face">
<img alt="" id="imgFace" src="http://avatar.csdn.net/A/2/D/2_danding_ge.jpg" />
</a>
<a class="xg" href="javascript:void(0);" id="btnSave" onclick="uploadFace()">修 改</a>
</form>
<article class="htmleaf-container" id="gesture" style="display: none;">
<div id="clipArea"></div>
<div class="sctx">
<a id="cancelBtn" onclick="cancelClip()">取消</a>
<a id="clipBtn">确定</a>
</div>
</article>
<script src="js/iscroll-zoom.js"></script>
<script src="js/hammer.js"></script>
<script src="js/jquery.photoClip.js"></script>
<script>
//document.addEventListener('touchmove', function (e) { e.preventDefault(); }, false);
$("#clipArea").photoClip({
width: 80,
height: 80,
file: "#imgFaceUrl",
view: "#view",
ok: "#clipBtn",
loadStart: function() {
console.log("照片读取中");
},
loadComplete: function() {
console.log("照片读取完成");
},
clipFinish: function(dataUrl) {
_imgFile = dataUrl;
//console.log(_imgFile);
var form1 = document.getElementById("form1");
form1.style.display = "";
var gesture = document.getElementById("gesture");
gesture.style.display = "none";
var imgFace = document.getElementById("imgFace");
imgFace.src = dataUrl;
}
});
function cancelClip() {
var form1 = document.getElementById("form1");
form1.style.display = "";
var gesture = document.getElementById("gesture");
gesture.style.display = "none";
}
</script>
</body>
</html>
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<input type="file">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 = $("<img>").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 = $("<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 = $("<div class='photo-clip-view'>").css({ "position": "absolute", "left": "50%", "top": "50%", "width": clipWidth, "height": clipHeight, "margin-left": -clipWidth/2, "margin-top": -clipHeight/2 }).appendTo($container); $moveLayer = $("<div class='photo-clip-moveLayer'>").appendTo($clipView); $rotateLayer = $("<div class='photo-clip-rotateLayer'>").appendTo($moveLayer); // 创建遮罩 var $mask = $("<div class='photo-clip-mask'>").css({ "position": "absolute", "left": 0, "top": 0, "width": "100%", "height": "100%", "pointer-events": "none" }).appendTo($container); var $mask_left = $("<div class='photo-clip-mask-left'>").css({ "position": "absolute", "left": 0, "right": "50%", "top": "50%", "bottom": "50%", "width": "auto", "height": clipHeight, "margin-right": clipWidth/2, "margin-top": -clipHeight/2, "margin-bottom": -clipHeight/2, "background-color": "rgba(0,0,0,.5)" }).appendTo($mask); var $mask_right = $("<div class='photo-clip-mask-right'>").css({ "position": "absolute", "left": "50%", "right": 0, "top": "50%", "bottom": "50%", "margin-left": clipWidth/2, "margin-top": -clipHeight/2, "margin-bottom": -clipHeight/2, "background-color": "rgba(0,0,0,.5)" }).appendTo($mask); var $mask_top = $("<div class='photo-clip-mask-top'>").css({ "position": "absolute", "left": 0, "right": 0, "top": 0, "bottom": "50%", "margin-bottom": clipHeight/2, "background-color": "rgba(0,0,0,.5)" }).appendTo($mask); var $mask_bottom = $("<div class='photo-clip-mask-bottom'>").css({ "position": "absolute", "left": 0, "right": 0, "top": "50%", "bottom": 0, "margin-top": clipHeight/2, "background-color": "rgba(0,0,0,.5)" }).appendTo($mask); // 创建截取区域 var $clip_area = $("<div class='photo-clip-area'>").css({ "border": "1px dashed #ddd", "position": "absolute", "left": "50%", "top": "50%", "width": clipWidth, "height": clipHeight, "margin-left": -clipWidth/2 - 1, "margin-top": -clipHeight/2 - 1 }).appendTo($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……