jQuery iScroll.js 移动端滚动条美化插件第1/5页

推荐整理分享jQuery iScroll.js 移动端滚动条美化插件第1/5页，希望有所帮助，仅作参考，欢迎阅读内容。

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官网：　'Carousel' demo

iScroll功能很强大，目前我只用来 自定义滚动条 以下简单介绍一下iscrol在移动端自定义滚动条时的使用和注意事项。

一、用法

iScroll对要滚动的元素进行初始化，且不限制一个页面中使用iScroll的元素个数。

使用iScroll时，DOM树的结构要足够简单，移除不必要的标签，避免过多的标签嵌套。

1、html部分

1.1、最优最简单的iScroll结构

本例中,ul标签将被滚动。iScroll一定要与滚动内容外的wrapper配合才能生效。

1.2、只有wrapper里的第一个子元素才可以滚动

因为只有wrapper里的第一个子元素才科院滚动，所以要让多个元素滚动 ，写法如下：

scroller这个元素可以滚动，即便它包含两个ul元素。

2、js调用部分

2.1 、使用onDomContentLoaded事件实现滚动

适用于滚动内容只包含文字、图片，并且所有的图片都有固定的尺寸

2.2、使用onLoad事件实现滚动

因为DOMContentLoaded事件是载入DOM结构后就会被调用，所以在图片等元素未载入前可能无法确定滚动区域的长宽，此时可以使用onLoad事件来实现。

这种情况下iScroll会在页面资源（包括图片）加载完毕ms之后得到初始化，这应该是一种比较安全的调用iScroll的方式。

2.3、弹框中的滚动条加载

弹框一般用display:none和display:block切换来实现。

display:none的元素浏览器没有渲染，所以无法计算滚动内容的高度。

所以在弹框调用show()显示出来后，再实例化滚动条区域。如下：

提示：出现滑动屏幕时，整个页面滑动的兼容性问题，解决办法如下：

2.4、iScroll传参

iScroll里的第二个参数允许你自定义一些内容，比如是否隐藏滚动条等。常用参数如下：

hScroll false 禁止横向滚动 true横向滚动 默认为truevScroll false 精致垂直滚动 true垂直滚动 默认为truehScrollbar false隐藏水平方向上的滚动条vScrollbar false 隐藏垂直方向上的滚动条fixedScrollbar 在iOS系统上，当元素拖动超出了scroller的边界时，滚动条会收缩，设置为true可以禁止滚动条超出scroller的可见区域。默认在Android上为true， iOS上为falsefadeScrollbar 　 false 指定在无渐隐效果时隐藏滚动条hideScrollbar 　 在没有用户交互时隐藏滚动条 默认为truebounce 　启用或禁用边界的反弹，默认为truemomentum 　 启用或禁用惯性，默认为true，此参数在你想要保存资源的时候非常有用lockDirection false取消拖动方向的锁定， true拖动只能在一个方向上（up/down 或者left/right）

2.5、通用方法

refresh 在DOM树发生变化时，应该调用此方法

eg: setTimeout(function () { myScroll.refresh(); }, 0);

3、css部分

自定义滚动条样式时需要给滚动条添加一个class参数，如下

滚动条是由两个元素组合而成的：容器和显示器。容器同wrapper的高度相同，而显示器则代表的是滚动条本身。

html结果如下：

css如下，可以自行修改：

二、示例

1、html+js

iScroll.js

/*!* iScroll v4.2.5 ~ Copyright (c) Matteo Spinelli, Released under MIT license, doc){var m = Math,dummyStyle = doc.createElement('div').style,vendor = (function () {var vendors = 't,webkitT,MozT,msT,OT'.split(','),t,i = 0,l = vendors.length;for ( ; i < l; i++ ) {t = vendors[i] + 'ransform';if ( t in dummyStyle ) {return vendors[i].substr(0, vendors[i].length - 1);}}return false;})(),cssVendor = vendor &#; '-' + vendor.toLowerCase() + '-' : '',// Style propertiestransform = prefixStyle('transform'),transitionProperty = prefixStyle('transitionProperty'),transitionDuration = prefixStyle('transitionDuration'),transformOrigin = prefixStyle('transformOrigin'),transitionTimingFunction = prefixStyle('transitionTimingFunction'),transitionDelay = prefixStyle('transitionDelay'),// Browser capabilitiesisAndroid = (/android/gi).test(navigator.appVersion),isIDevice = (/iphone|ipad/gi).test(navigator.appVersion),isTouchPad = (/hp-tablet/gi).test(navigator.appVersion),has3d = prefixStyle('perspective') in dummyStyle,hasTouch = 'ontouchstart' in window && !isTouchPad,hasTransform = vendor !== false,hasTransitionEnd = prefixStyle('transition') in dummyStyle,RESIZE_EV = 'onorientationchange' in window &#; 'orientationchange' : 'resize',START_EV = hasTouch &#; 'touchstart' : 'mousedown',MOVE_EV = hasTouch &#; 'touchmove' : 'mousemove',END_EV = hasTouch &#; 'touchend' : 'mouseup',CANCEL_EV = hasTouch &#; 'touchcancel' : 'mouseup',TRNEND_EV = (function () {if ( vendor === false ) return false;var transitionEnd = {'' : 'transitionend','webkit' : 'webkitTransitionEnd','Moz' : 'transitionend','O' : 'otransitionend','ms' : 'MSTransitionEnd'};return transitionEnd[vendor];})(),nextFrame = (function() {return window.requestAnimationFrame ||window.webkitRequestAnimationFrame ||window.mozRequestAnimationFrame ||window.oRequestAnimationFrame ||window.msRequestAnimationFrame ||function(callback) { return setTimeout(callback, 1); };})(),cancelFrame = (function () {return window.cancelRequestAnimationFrame ||window.webkitCancelAnimationFrame ||window.webkitCancelRequestAnimationFrame ||window.mozCancelRequestAnimationFrame ||window.oCancelRequestAnimationFrame ||window.msCancelRequestAnimationFrame ||clearTimeout;})(),// HelperstranslateZ = has3d &#; ' translateZ(0)' : '',// ConstructoriScroll = function (el, options) {var that = this,i;that.wrapper = typeof el == 'object' &#; el : doc.getElementById(el);that.wrapper.style.overflow = 'hidden';that.scroller = that.wrapper.children[0];// Default optionsthat.options = {hScroll: true,vScroll: true,x: 0,y: 0,bounce: true,bounceLock: false,momentum: true,lockDirection: true,useTransform: true,useTransition: false,topOffset: 0,checkDOMChanges: false, // ExperimentalhandleClick: true,// ScrollbarhScrollbar: true,vScrollbar: true,fixedScrollbar: isAndroid,hideScrollbar: isIDevice,fadeScrollbar: isIDevice && has3d,scrollbarClass: '',// Zoomzoom: false,zoomMin: 1,zoomMax: 4,doubleTapZoom: 2,wheelAction: 'scroll',// Snapsnap: false,snapThreshold: 1,// EventsonRefresh: null,onBeforeScrollStart: function (e) { e.preventDefault(); },onScrollStart: null,onBeforeScrollMove: null,onScrollMove: null,onBeforeScrollEnd: null,onScrollEnd: null,onTouchEnd: null,onDestroy: null,onZoomStart: null,onZoom: null,onZoomEnd: null};// User defined optionsfor (i in options) that.options[i] = options[i];// Set starting positionthat.x = that.options.x;that.y = that.options.y;// Normalize optionsthat.options.useTransform = hasTransform && that.options.useTransform;that.options.hScrollbar = that.options.hScroll && that.options.hScrollbar;that.options.vScrollbar = that.options.vScroll && that.options.vScrollbar;that.options.zoom = that.options.useTransform && that.options.zoom;that.options.useTransition = hasTransitionEnd && that.options.useTransition;// Helpers FIX ANDROID BUG!// translate3d and scale doesn't work together!// Ignoring 3d ONLY WHEN YOU SET that.options.zoomif ( that.options.zoom && isAndroid ){translateZ = '';}// Set some default stylesthat.scroller.style[transitionProperty] = that.options.useTransform &#; cssVendor + 'transform' : 'top left';that.scroller.style[transitionDuration] = '0';that.scroller.style[transformOrigin] = '0 0';if (that.options.useTransition) that.scroller.style[transitionTimingFunction] = 'cubic-bezier(0.,0.,0.,1)';if (that.options.useTransform) that.scroller.style[transform] = 'translate(' + that.x + 'px,' + that.y + 'px)' + translateZ;else that.scroller.style.cssText += ';position:absolute;top:' + that.y + 'px;left:' + that.x + 'px';if (that.options.useTransition) that.options.fixedScrollbar = true;that.refresh();that._bind(RESIZE_EV, window);that._bind(START_EV);if (!hasTouch) {if (that.options.wheelAction != 'none') {that._bind('DOMMouseScroll');that._bind('mousewheel');}}if (that.options.checkDOMChanges) that.checkDOMTime = setInterval(function () {that._checkDOMChanges();}, );};// PrototypeiScroll.prototype = {enabled: true,x: 0,y: 0,steps: [],scale: 1,currPageX: 0, currPageY: 0,pagesX: [], pagesY: [],aniTime: null,wheelZoomCount: 0,handleEvent: function (e) {var that = this;switch(e.type) {case START_EV:if (!hasTouch && e.button !== 0) return;that._start(e);break;case MOVE_EV: that._move(e); break;case END_EV:case CANCEL_EV: that._end(e); break;case RESIZE_EV: that._resize(); break;case 'DOMMouseScroll': case 'mousewheel': that._wheel(e); break;case TRNEND_EV: that._transitionEnd(e); break;}},_checkDOMChanges: function () {if (this.moved || this.zoomed || this.animating ||(this.scrollerW == this.scroller.offsetWidth * this.scale && this.scrollerH == this.scroller.offsetHeight * this.scale)) return;this.refresh();},_scrollbar: function (dir) {var that = this,bar;if (!that[dir + 'Scrollbar']) {if (that[dir + 'ScrollbarWrapper']) {if (hasTransform) that[dir + 'ScrollbarIndicator'].style[transform] = '';that[dir + 'ScrollbarWrapper'].parentNode.removeChild(that[dir + 'ScrollbarWrapper']);that[dir + 'ScrollbarWrapper'] = null;that[dir + 'ScrollbarIndicator'] = null;}return;}if (!that[dir + 'ScrollbarWrapper']) {// Create the scrollbar wrapperbar = doc.createElement('div');if (that.options.scrollbarClass) bar.className = that.options.scrollbarClass + dir.toUpperCase();else bar.style.cssText = 'position:absolute;z-index:;' + (dir == 'h' &#; 'height:7px;bottom:1px;left:2px;right:' + (that.vScrollbar &#; '7' : '2') + 'px' : 'width:7px;bottom:' + (that.hScrollbar &#; '7' : '2') + 'px;top:2px;right:1px');bar.style.cssText += ';pointer-events:none;' + cssVendor + 'transition-property:opacity;' + cssVendor + 'transition-duration:' + (that.options.fadeScrollbar &#; 'ms' : '0') + ';overflow:hidden;opacity:' + (that.options.hideScrollbar &#; '0' : '1');that.wrapper.appendChild(bar);that[dir + 'ScrollbarWrapper'] = bar;// Create the scrollbar indicatorbar = doc.createElement('div');if (!that.options.scrollbarClass) {bar.style.cssText = 'position:absolute;z-index:;background:rgba(0,0,0,0.5);border:1px solid rgba(,,,0.9);' + cssVendor + 'background-clip:padding-box;' + cssVendor + 'box-sizing:border-box;' + (dir == 'h' &#; 'height:%' : 'width:%') + ';' + cssVendor + 'border-radius:3px;border-radius:3px';}bar.style.cssText += ';pointer-events:none;' + cssVendor + 'transition-property:' + cssVendor + 'transform;' + cssVendor + 'transition-timing-function:cubic-bezier(0.,0.,0.,1);' + cssVendor + 'transition-duration:0;' + cssVendor + 'transform: translate(0,0)' + translateZ;if (that.options.useTransition) bar.style.cssText += ';' + cssVendor + 'transition-timing-function:cubic-bezier(0.,0.,0.,1)';that[dir + 'ScrollbarWrapper'].appendChild(bar);that[dir + 'ScrollbarIndicator'] = bar;}if (dir == 'h') {that.hScrollbarSize = that.hScrollbarWrapper.clientWidth;that.hScrollbarIndicatorSize = m.max(m.round(that.hScrollbarSize * that.hScrollbarSize / that.scrollerW), 8);that.hScrollbarIndicator.style.width = that.hScrollbarIndicatorSize + 'px';that.hScrollbarMaxScroll = that.hScrollbarSize - that.hScrollbarIndicatorSize;that.hScrollbarProp = that.hScrollbarMaxScroll / that.maxScrollX;} else {that.vScrollbarSize = that.vScrollbarWrapper.clientHeight;that.vScrollbarIndicatorSize = m.max(m.round(that.vScrollbarSize * that.vScrollbarSize / that.scrollerH), 8);that.vScrollbarIndicator.style.height = that.vScrollbarIndicatorSize + 'px';that.vScrollbarMaxScroll = that.vScrollbarSize - that.vScrollbarIndicatorSize;that.vScrollbarProp = that.vScrollbarMaxScroll / that.maxScrollY;}// Reset positionthat._scrollbarPos(dir, true);},_resize: function () {var that = this;setTimeout(function () { that.refresh(); }, isAndroid &#; : 0);},_pos: function (x, y) {if (this.zoomed) return;x = this.hScroll &#; x : 0;y = this.vScroll &#; y : 0;if (this.options.useTransform) {this.scroller.style[transform] = 'translate(' + x + 'px,' + y + 'px) scale(' + this.scale + ')' + translateZ;} else {x = m.round(x);y = m.round(y);this.scroller.style.left = x + 'px';this.scroller.style.top = y + 'px';}this.x = x;this.y = y;this._scrollbarPos('h');this._scrollbarPos('v');},_scrollbarPos: function (dir, hidden) {var that = this,pos = dir == 'h' &#; that.x : that.y,size;if (!that[dir + 'Scrollbar']) return;pos = that[dir + 'ScrollbarProp'] * pos;if (pos < 0) {if (!that.options.fixedScrollbar) {size = that[dir + 'ScrollbarIndicatorSize'] + m.round(pos * 3);if (size < 8) size = 8;that[dir + 'ScrollbarIndicator'].style[dir == 'h' &#; 'width' : 'height'] = size + 'px';}pos = 0;} else if (pos > that[dir + 'ScrollbarMaxScroll']) {if (!that.options.fixedScrollbar) {size = that[dir + 'ScrollbarIndicatorSize'] - m.round((pos - that[dir + 'ScrollbarMaxScroll']) * 3);if (size < 8) size = 8;that[dir + 'ScrollbarIndicator'].style[dir == 'h' &#; 'width' : 'height'] = size + 'px';pos = that[dir + 'ScrollbarMaxScroll'] + (that[dir + 'ScrollbarIndicatorSize'] - size);} else {pos = that[dir + 'ScrollbarMaxScroll'];}}that[dir + 'ScrollbarWrapper'].style[transitionDelay] = '0';that[dir + 'ScrollbarWrapper'].style.opacity = hidden && that.options.hideScrollbar &#; '0' : '1';that[dir + 'ScrollbarIndicator'].style[transform] = 'translate(' + (dir == 'h' &#; pos + 'px,0)' : '0,' + pos + 'px)') + translateZ;},_start: function (e) {var that = this,point = hasTouch &#; e.touches[0] : e,matrix, x, y,c1, c2;if (!that.enabled) return;if (that.options.onBeforeScrollStart) that.options.onBeforeScrollStart.call(that, e);if (that.options.useTransition || that.options.zoom) that._transitionTime(0);that.moved = false;that.animating = false;that.zoomed = false;that.distX = 0;that.distY = 0;that.absDistX = 0;that.absDistY = 0;that.dirX = 0;that.dirY = 0;// Gesture startif (that.options.zoom && hasTouch && e.touches.length > 1) {c1 = m.abs(e.touches[0].pageX-e.touches[1].pageX);c2 = m.abs(e.touches[0].pageY-e.touches[1].pageY);that.touchesDistStart = m.sqrt(c1 * c1 + c2 * c2);that.originX = m.abs(e.touches[0].pageX + e.touches[1].pageX - that.wrapperOffsetLeft * 2) / 2 - that.x;that.originY = m.abs(e.touches[0].pageY + e.touches[1].pageY - that.wrapperOffsetTop * 2) / 2 - that.y;if (that.options.onZoomStart) that.options.onZoomStart.call(that, e);}if (that.options.momentum) {if (that.options.useTransform) {// Very lame general purpose alternative to CSSMatrixmatrix = getComputedStyle(that.scroller, null)[transform].replace(/[^0-9-.,]/g, '').split(',');x = +(matrix[] || matrix[4]);y = +(matrix[] || matrix[5]);} else {x = +getComputedStyle(that.scroller, null).left.replace(/[^0-9-]/g, '');y = +getComputedStyle(that.scroller, null).top.replace(/[^0-9-]/g, '');}if (x != that.x || y != that.y) {if (that.options.useTransition) that._unbind(TRNEND_EV);else cancelFrame(that.aniTime);that.steps = [];that._pos(x, y);if (that.options.onScrollEnd) that.options.onScrollEnd.call(that);}}that.absStartX = that.x; // Needed by snap thresholdthat.absStartY = that.y;that.startX = that.x;that.startY = that.y;that.pointX = point.pageX;that.pointY = point.pageY;that.startTime = e.timeStamp || Date.now();if (that.options.onScrollStart) that.options.onScrollStart.call(that, e);that._bind(MOVE_EV, window);that._bind(END_EV, window);that._bind(CANCEL_EV, window);},_move: function (e) {var that = this,point = hasTouch &#; e.touches[0] : e,deltaX = point.pageX - that.pointX,deltaY = point.pageY - that.pointY,newX = that.x + deltaX,newY = that.y + deltaY,c1, c2, scale,timestamp = e.timeStamp || Date.now();if (that.options.onBeforeScrollMove) that.options.onBeforeScrollMove.call(that, e);// Zoomif (that.options.zoom && hasTouch && e.touches.length > 1) {c1 = m.abs(e.touches[0].pageX - e.touches[1].pageX);c2 = m.abs(e.touches[0].pageY - e.touches[1].pageY);that.touchesDist = m.sqrt(c1*c1+c2*c2);that.zoomed = true;scale = 1 / that.touchesDistStart * that.touchesDist * this.scale;if (scale < that.options.zoomMin) scale = 0.5 * that.options.zoomMin * Math.pow(2.0, scale / that.options.zoomMin);else if (scale > that.options.zoomMax) scale = 2.0 * that.options.zoomMax * Math.pow(0.5, that.options.zoomMax / scale);that.lastScale = scale / this.scale;newX = this.originX - this.originX * that.lastScale + this.x,newY = this.originY - this.originY * that.lastScale + this.y;this.scroller.style[transform] = 'translate(' + newX + 'px,' + newY + 'px) scale(' + scale + ')' + translateZ;if (that.options.onZoom) that.options.onZoom.call(that, e);return;}that.pointX = point.pageX;that.pointY = point.pageY;// Slow down if outside of the boundariesif (newX > 0 || newX < that.maxScrollX) {newX = that.options.bounce &#; that.x + (deltaX / 2) : newX >= 0 || that.maxScrollX >= 0 &#; 0 : that.maxScrollX;}if (newY > that.minScrollY || newY < that.maxScrollY) {newY = that.options.bounce &#; that.y + (deltaY / 2) : newY >= that.minScrollY || that.maxScrollY >= 0 &#; that.minScrollY : that.maxScrollY;}that.distX += deltaX;that.distY += deltaY;that.absDistX = m.abs(that.distX);that.absDistY = m.abs(that.distY);if (that.absDistX < 6 && that.absDistY < 6) {return;}// Lock directionif (that.options.lockDirection) {if (that.absDistX > that.absDistY + 5) {newY = that.y;deltaY = 0;} else if (that.absDistY > that.absDistX + 5) {newX = that.x;deltaX = 0;}}that.moved = true;that._pos(newX, newY);that.dirX = deltaX > 0 &#; -1 : deltaX < 0 &#; 1 : 0;that.dirY = deltaY > 0 &#; -1 : deltaY < 0 &#; 1 : 0;if (timestamp - that.startTime > ) {that.startTime = timestamp;that.startX = that.x;that.startY = that.y;}if (that.options.onScrollMove) that.options.onScrollMove.call(that, e);},_end: function (e) {if (hasTouch && e.touches.length !== 0) return;var that = this,point = hasTouch &#; e.changedTouches[0] : e,target, ev,momentumX = { dist:0, time:0 },momentumY = { dist:0, time:0 },duration = (e.timeStamp || Date.now()) - that.startTime,newPosX = that.x,newPosY = that.y,distX, distY,newDuration,snap,scale;that._unbind(MOVE_EV, window);that._unbind(END_EV, window);that._unbind(CANCEL_EV, window);if (that.options.onBeforeScrollEnd) that.options.onBeforeScrollEnd.call(that, e);if (that.zoomed) {scale = that.scale * that.lastScale;scale = Math.max(that.options.zoomMin, scale);scale = Math.min(that.options.zoomMax, scale);that.lastScale = scale / that.scale;that.scale = scale;that.x = that.originX - that.originX * that.lastScale + that.x;that.y = that.originY - that.originY * that.lastScale + that.y;that.scroller.style[transitionDuration] = 'ms';that.scroller.style[transform] = 'translate(' + that.x + 'px,' + that.y + 'px) scale(' + that.scale + ')' + translateZ;that.zoomed = false;that.refresh();if (that.options.onZoomEnd) that.options.onZoomEnd.call(that, e);return;}if (!that.moved) {if (hasTouch) {if (that.doubleTapTimer && that.options.zoom) {// Double tappedclearTimeout(that.doubleTapTimer);that.doubleTapTimer = null;if (that.options.onZoomStart) that.options.onZoomStart.call(that, e);that.zoom(that.pointX, that.pointY, that.scale == 1 &#; that.options.doubleTapZoom : 1);if (that.options.onZoomEnd) {setTimeout(function() {that.options.onZoomEnd.call(that, e);}, ); // is default zoom duration}} else if (this.options.handleClick) {that.doubleTapTimer = setTimeout(function () {that.doubleTapTimer = null;// Find the last touched elementtarget = point.target;while (target.nodeType != 1) target = target.parentNode;if (target.tagName != 'SELECT' && target.tagName != 'INPUT' && target.tagName != 'TEXTAREA') {ev = doc.createEvent('MouseEvents');ev.initMouseEvent('click', true, true, e.view, 1,point.screenX, point.screenY, point.clientX, point.clientY,e.ctrlKey, e.altKey, e.shiftKey, e.metaKey,0, null);ev._fake = true;target.dispatchEvent(ev);}}, that.options.zoom &#; : 0);}}that._resetPos();if (that.options.onTouchEnd) that.options.onTouchEnd.call(that, e);return;}if (duration < && that.options.momentum) {momentumX = newPosX &#; that._momentum(newPosX - that.startX, duration, -that.x, that.scrollerW - that.wrapperW + that.x, that.options.bounce &#; that.wrapperW : 0) : momentumX;momentumY = newPosY &#; that._momentum(newPosY - that.startY, duration, -that.y, (that.maxScrollY < 0 &#; that.scrollerH - that.wrapperH + that.y - that.minScrollY : 0), that.options.bounce &#; that.wrapperH : 0) : momentumY;newPosX = that.x + momentumX.dist;newPosY = that.y + momentumY.dist;if ((that.x > 0 && newPosX > 0) || (that.x < that.maxScrollX && newPosX < that.maxScrollX)) momentumX = { dist:0, time:0 };if ((that.y > that.minScrollY && newPosY > that.minScrollY) || (that.y < that.maxScrollY && newPosY < that.maxScrollY)) momentumY = { dist:0, time:0 };}if (momentumX.dist || momentumY.dist) {newDuration = m.max(m.max(momentumX.time, momentumY.time), );// Do we need to snap&#;if (that.options.snap) {distX = newPosX - that.absStartX;distY = newPosY - that.absStartY;if (m.abs(distX) < that.options.snapThreshold && m.abs(distY) < that.options.snapThreshold) { that.scrollTo(that.absStartX, that.absStartY, ); }else {snap = that._snap(newPosX, newPosY);newPosX = snap.x;newPosY = snap.y;newDuration = m.max(snap.time, newDuration);}}that.scrollTo(m.round(newPosX), m.round(newPosY), newDuration);if (that.options.onTouchEnd) that.options.onTouchEnd.call(that, e);return;}// Do we need to snap&#;if (that.options.snap) {distX = newPosX - that.absStartX;distY = newPosY - that.absStartY;if (m.abs(distX) < that.options.snapThreshold && m.abs(distY) < that.options.snapThreshold) that.scrollTo(that.absStartX, that.absStartY, );else {snap = that._snap(that.x, that.y);if (snap.x != that.x || snap.y != that.y) that.scrollTo(snap.x, snap.y, snap.time);}if (that.options.onTouchEnd) that.options.onTouchEnd.call(that, e);return;}that._resetPos();if (that.options.onTouchEnd) that.options.onTouchEnd.call(that, e);},_resetPos: function (time) {var that = this,resetX = that.x >= 0 &#; 0 : that.x < that.maxScrollX &#; that.maxScrollX : that.x,resetY = that.y >= that.minScrollY || that.maxScrollY > 0 &#; that.minScrollY : that.y < that.maxScrollY &#; that.maxScrollY : that.y;if (resetX == that.x && resetY == that.y) {if (that.moved) {that.moved = false;if (that.options.onScrollEnd) that.options.onScrollEnd.call(that); // Execute custom code on scroll end}if (that.hScrollbar && that.options.hideScrollbar) {if (vendor == 'webkit') that.hScrollbarWrapper.style[transitionDelay] = 'ms';that.hScrollbarWrapper.style.opacity = '0';}if (that.vScrollbar && that.options.hideScrollbar) {if (vendor == 'webkit') that.vScrollbarWrapper.style[transitionDelay] = 'ms';that.vScrollbarWrapper.style.opacity = '0';}return;}that.scrollTo(resetX, resetY, time || 0);},_wheel: function (e) {var that = this,wheelDeltaX, wheelDeltaY,deltaX, deltaY,deltaScale;if ('wheelDeltaX' in e) {wheelDeltaX = e.wheelDeltaX / ;wheelDeltaY = e.wheelDeltaY / ;} else if('wheelDelta' in e) {wheelDeltaX = wheelDeltaY = e.wheelDelta / ;} else if ('detail' in e) {wheelDeltaX = wheelDeltaY = -e.detail * 3;} else {return;}if (that.options.wheelAction == 'zoom') {deltaScale = that.scale * Math.pow(2, 1/3 * (wheelDeltaY &#; wheelDeltaY / Math.abs(wheelDeltaY) : 0));if (deltaScale < that.options.zoomMin) deltaScale = that.options.zoomMin;if (deltaScale > that.options.zoomMax) deltaScale = that.options.zoomMax;if (deltaScale != that.scale) {if (!that.wheelZoomCount && that.options.onZoomStart) that.options.onZoomStart.call(that, e);that.wheelZoomCount++;that.zoom(e.pageX, e.pageY, deltaScale, );setTimeout(function() {that.wheelZoomCount--;if (!that.wheelZoomCount && that.options.onZoomEnd) that.options.onZoomEnd.call(that, e);}, );}return;}deltaX = that.x + wheelDeltaX;deltaY = that.y + wheelDeltaY;if (deltaX > 0) deltaX = 0;else if (deltaX < that.maxScrollX) deltaX = that.maxScrollX;if (deltaY > that.minScrollY) deltaY = that.minScrollY;else if (deltaY < that.maxScrollY) deltaY = that.maxScrollY;if (that.maxScrollY < 0) {that.scrollTo(deltaX, deltaY, 0);}},_transitionEnd: function (e) {var that = this;if (e.target != that.scroller) return;that._unbind(TRNEND_EV);that._startAni();},/**** Utilities**/_startAni: function () {var that = this,startX = that.x, startY = that.y,startTime = Date.now(),step, easeOut,animate;if (that.animating) return;if (!that.steps.length) {that._resetPos();return;}step = that.steps.shift();if (step.x == startX && step.y == startY) step.time = 0;that.animating = true;that.moved = true;if (that.options.useTransition) {that._transitionTime(step.time);that._pos(step.x, step.y);that.animating = false;if (step.time) that._bind(TRNEND_EV);else that._resetPos(0);return;}animate = function () {var now = Date.now(),newX, newY;if (now >= startTime + step.time) {that._pos(step.x, step.y);that.animating = false;if (that.options.onAnimationEnd) that.options.onAnimationEnd.call(that); // Execute custom code on animation endthat._startAni();return;}now = (now - startTime) / step.time - 1;easeOut = m.sqrt(1 - now * now);newX = (step.x - startX) * easeOut + startX;newY = (step.y - startY) * easeOut + startY;that._pos(newX, newY);if (that.animating) that.aniTime = nextFrame(animate);};animate();},_transitionTime: function (time) {time += 'ms';this.scroller.style[transitionDuration] = time;if (this.hScrollbar) this.hScrollbarIndicator.style[transitionDuration] = time;if (this.vScrollbar) this.vScrollbarIndicator.style[transitionDuration] = time;},_momentum: function (dist, time, maxDistUpper, maxDistLower, size) {var deceleration = 0.,speed = m.abs(dist) / time,newDist = (speed * speed) / (2 * deceleration),newTime = 0, outsideDist = 0;// Proportinally reduce speed if we are outside of the boundariesif (dist > 0 && newDist > maxDistUpper) {outsideDist = size / (6 / (newDist / speed * deceleration));maxDistUpper = maxDistUpper + outsideDist;speed = speed * maxDistUpper / newDist;newDist = maxDistUpper;} else if (dist < 0 && newDist > maxDistLower) {outsideDist = size / (6 / (newDist / speed * deceleration));maxDistLower = maxDistLower + outsideDist;speed = speed * maxDistLower / newDist;newDist = maxDistLower;}newDist = newDist * (dist < 0 &#; -1 : 1);newTime = speed / deceleration;return { dist: newDist, time: m.round(newTime) };},_offset: function (el) {var left = -el.offsetLeft,top = -el.offsetTop;while (el = el.offsetParent) {left -= el.offsetLeft;top -= el.offsetTop;}if (el != this.wrapper) {left *= this.scale;top *= this.scale;}return { left: left, top: top };},_snap: function (x, y) {var that = this,i, l,page, time,sizeX, sizeY;// Check page Xpage = that.pagesX.length - 1;for (i=0, l=that.pagesX.length; i<l; i++) {if (x >= that.pagesX[i]) {page = i;break;}}if (page == that.currPageX && page > 0 && that.dirX < 0) page--;x = that.pagesX当前1/5页 下一页阅读全文

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