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March 14, 2013 03:36
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| /*! | |
| * iScroll v4.2.5 ~ Copyright (c) 2012 Matteo Spinelli, http://cubiq.org | |
| * Released under MIT license, http://cubiq.org/license | |
| */ | |
| (function(window, 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 properties | |
| transform = prefixStyle('transform'), | |
| transitionProperty = prefixStyle('transitionProperty'), | |
| transitionDuration = prefixStyle('transitionDuration'), | |
| transformOrigin = prefixStyle('transformOrigin'), | |
| transitionTimingFunction = prefixStyle('transitionTimingFunction'), | |
| transitionDelay = prefixStyle('transitionDelay'), | |
| // Browser capabilities | |
| isAndroid = (/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; | |
| })(), | |
| // Helpers | |
| translateZ = has3d ? ' translateZ(0)' : '', | |
| // Constructor | |
| iScroll = 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 options | |
| that.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, // Experimental | |
| handleClick: true, | |
| // Scrollbar | |
| hScrollbar: true, | |
| vScrollbar: true, | |
| fixedScrollbar: isAndroid, | |
| hideScrollbar: isIDevice, | |
| fadeScrollbar: isIDevice && has3d, | |
| scrollbarClass: '', | |
| // Zoom | |
| zoom: false, | |
| zoomMin: 1, | |
| zoomMax: 4, | |
| doubleTapZoom: 2, | |
| wheelAction: 'scroll', | |
| // Snap | |
| snap: false, | |
| snapThreshold: 1, | |
| // Events | |
| onRefresh: 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 options | |
| for (i in options) that.options[i] = options[i]; | |
| // Set starting position | |
| that.x = that.options.x; | |
| that.y = that.options.y; | |
| // Normalize options | |
| that.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.zoom | |
| if ( that.options.zoom && isAndroid ){ | |
| translateZ = ''; | |
| } | |
| // Set some default styles | |
| that.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(0.33,0.66,0.66,1)'; | |
| 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(); | |
| }, 500); | |
| }; | |
| // Prototype | |
| iScroll.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 wrapper | |
| bar = doc.createElement('div'); | |
| if (that.options.scrollbarClass) bar.className = that.options.scrollbarClass + dir.toUpperCase(); | |
| else bar.style.cssText = 'position:absolute;z-index:100;' + (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 ? '350ms' : '0') + ';overflow:hidden;opacity:' + (that.options.hideScrollbar ? '0' : '1'); | |
| that.wrapper.appendChild(bar); | |
| that[dir + 'ScrollbarWrapper'] = bar; | |
| // Create the scrollbar indicator | |
| bar = doc.createElement('div'); | |
| if (!that.options.scrollbarClass) { | |
| bar.style.cssText = 'position:absolute;z-index:100;background:rgba(0,0,0,0.5);border:1px solid rgba(255,255,255,0.9);' + cssVendor + 'background-clip:padding-box;' + cssVendor + 'box-sizing:border-box;' + (dir == 'h' ? 'height:100%' : 'width:100%') + ';' + cssVendor + 'border-radius:3px;border-radius:3px'; | |
| } | |
| bar.style.cssText += ';pointer-events:none;' + cssVendor + 'transition-property:' + cssVendor + 'transform;' + cssVendor + 'transition-timing-function:cubic-bezier(0.33,0.66,0.66,1);' + cssVendor + 'transition-duration:0;' + cssVendor + 'transform: translate(0,0)' + translateZ; | |
| if (that.options.useTransition) bar.style.cssText += ';' + cssVendor + 'transition-timing-function:cubic-bezier(0.33,0.66,0.66,1)'; | |
| 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 position | |
| that._scrollbarPos(dir, true); | |
| }, | |
| _resize: function () { | |
| var that = this; | |
| setTimeout(function () { that.refresh(); }, isAndroid ? 200 : 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 start | |
| if (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 CSSMatrix | |
| matrix = getComputedStyle(that.scroller, null)[transform].replace(/[^0-9\-.,]/g, '').split(','); | |
| x = +(matrix[12] || matrix[4]); | |
| y = +(matrix[13] || 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 threshold | |
| that.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); | |
| // Zoom | |
| if (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 boundaries | |
| if (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 direction | |
| if (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 > 300) { | |
| 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] = '200ms'; | |
| 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 tapped | |
| clearTimeout(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); | |
| }, 200); // 200 is default zoom duration | |
| } | |
| } else if (this.options.handleClick) { | |
| that.doubleTapTimer = setTimeout(function () { | |
| that.doubleTapTimer = null; | |
| // Find the last touched element | |
| target = 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 ? 250 : 0); | |
| } | |
| } | |
| that._resetPos(400); | |
| if (that.options.onTouchEnd) that.options.onTouchEnd.call(that, e); | |
| return; | |
| } | |
| if (duration < 300 && 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), 10); | |
| // 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, 200); } | |
| 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, 200); | |
| 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(200); | |
| 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] = '300ms'; | |
| that.hScrollbarWrapper.style.opacity = '0'; | |
| } | |
| if (that.vScrollbar && that.options.hideScrollbar) { | |
| if (vendor == 'webkit') that.vScrollbarWrapper.style[transitionDelay] = '300ms'; | |
| 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 / 12; | |
| wheelDeltaY = e.wheelDeltaY / 12; | |
| } else if('wheelDelta' in e) { | |
| wheelDeltaX = wheelDeltaY = e.wheelDelta / 12; | |
| } 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, 400); | |
| setTimeout(function() { | |
| that.wheelZoomCount--; | |
| if (!that.wheelZoomCount && that.options.onZoomEnd) that.options.onZoomEnd.call(that, e); | |
| }, 400); | |
| } | |
| 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(400); | |
| 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 end | |
| that._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 = 0.0006, | |
| speed = m.abs(dist) / time, | |
| newDist = (speed * speed) / (2 * deceleration), | |
| newTime = 0, outsideDist = 0; | |
| // Proportinally reduce speed if we are outside of the boundaries | |
| if (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 X | |
| page = 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[page]; | |
| sizeX = m.abs(x - that.pagesX[that.currPageX]); | |
| sizeX = sizeX ? m.abs(that.x - x) / sizeX * 500 : 0; | |
| that.currPageX = page; | |
| // Check page Y | |
| page = that.pagesY.length-1; | |
| for (i=0; i<page; i++) { | |
| if (y >= that.pagesY[i]) { | |
| page = i; | |
| break; | |
| } | |
| } | |
| if (page == that.currPageY && page > 0 && that.dirY < 0) page--; | |
| y = that.pagesY[page]; | |
| sizeY = m.abs(y - that.pagesY[that.currPageY]); | |
| sizeY = sizeY ? m.abs(that.y - y) / sizeY * 500 : 0; | |
| that.currPageY = page; | |
| // Snap with constant speed (proportional duration) | |
| time = m.round(m.max(sizeX, sizeY)) || 200; | |
| return { x: x, y: y, time: time }; | |
| }, | |
| _bind: function (type, el, bubble) { | |
| (el || this.scroller).addEventListener(type, this, !!bubble); | |
| }, | |
| _unbind: function (type, el, bubble) { | |
| (el || this.scroller).removeEventListener(type, this, !!bubble); | |
| }, | |
| /** | |
| * | |
| * Public methods | |
| * | |
| */ | |
| destroy: function () { | |
| var that = this; | |
| that.scroller.style[transform] = ''; | |
| // Remove the scrollbars | |
| that.hScrollbar = false; | |
| that.vScrollbar = false; | |
| that._scrollbar('h'); | |
| that._scrollbar('v'); | |
| // Remove the event listeners | |
| that._unbind(RESIZE_EV, window); | |
| that._unbind(START_EV); | |
| that._unbind(MOVE_EV, window); | |
| that._unbind(END_EV, window); | |
| that._unbind(CANCEL_EV, window); | |
| if (!that.options.hasTouch) { | |
| that._unbind('DOMMouseScroll'); | |
| that._unbind('mousewheel'); | |
| } | |
| if (that.options.useTransition) that._unbind(TRNEND_EV); | |
| if (that.options.checkDOMChanges) clearInterval(that.checkDOMTime); | |
| if (that.options.onDestroy) that.options.onDestroy.call(that); | |
| }, | |
| refresh: function () { | |
| var that = this, | |
| offset, | |
| i, l, | |
| els, | |
| pos = 0, | |
| page = 0; | |
| if (that.scale < that.options.zoomMin) that.scale = that.options.zoomMin; | |
| that.wrapperW = that.wrapper.clientWidth || 1; | |
| that.wrapperH = that.wrapper.clientHeight || 1; | |
| that.minScrollY = -that.options.topOffset || 0; | |
| that.scrollerW = m.round(that.scroller.offsetWidth * that.scale); | |
| that.scrollerH = m.round((that.scroller.offsetHeight + that.minScrollY) * that.scale); | |
| that.maxScrollX = that.wrapperW - that.scrollerW; | |
| that.maxScrollY = that.wrapperH - that.scrollerH + that.minScrollY; | |
| that.dirX = 0; | |
| that.dirY = 0; | |
| if (that.options.onRefresh) that.options.onRefresh.call(that); | |
| that.hScroll = that.options.hScroll && that.maxScrollX < 0; | |
| that.vScroll = that.options.vScroll && (!that.options.bounceLock && !that.hScroll || that.scrollerH > that.wrapperH); | |
| that.hScrollbar = that.hScroll && that.options.hScrollbar; | |
| that.vScrollbar = that.vScroll && that.options.vScrollbar && that.scrollerH > that.wrapperH; | |
| offset = that._offset(that.wrapper); | |
| that.wrapperOffsetLeft = -offset.left; | |
| that.wrapperOffsetTop = -offset.top; | |
| // Prepare snap | |
| if (typeof that.options.snap == 'string') { | |
| that.pagesX = []; | |
| that.pagesY = []; | |
| els = that.scroller.querySelectorAll(that.options.snap); | |
| for (i=0, l=els.length; i<l; i++) { | |
| pos = that._offset(els[i]); | |
| pos.left += that.wrapperOffsetLeft; | |
| pos.top += that.wrapperOffsetTop; | |
| that.pagesX[i] = pos.left < that.maxScrollX ? that.maxScrollX : pos.left * that.scale; | |
| that.pagesY[i] = pos.top < that.maxScrollY ? that.maxScrollY : pos.top * that.scale; | |
| } | |
| } else if (that.options.snap) { | |
| that.pagesX = []; | |
| while (pos >= that.maxScrollX) { | |
| that.pagesX[page] = pos; | |
| pos = pos - that.wrapperW; | |
| page++; | |
| } | |
| if (that.maxScrollX%that.wrapperW) that.pagesX[that.pagesX.length] = that.maxScrollX - that.pagesX[that.pagesX.length-1] + that.pagesX[that.pagesX.length-1]; | |
| pos = 0; | |
| page = 0; | |
| that.pagesY = []; | |
| while (pos >= that.maxScrollY) { | |
| that.pagesY[page] = pos; | |
| pos = pos - that.wrapperH; | |
| page++; | |
| } | |
| if (that.maxScrollY%that.wrapperH) that.pagesY[that.pagesY.length] = that.maxScrollY - that.pagesY[that.pagesY.length-1] + that.pagesY[that.pagesY.length-1]; | |
| } | |
| // Prepare the scrollbars | |
| that._scrollbar('h'); | |
| that._scrollbar('v'); | |
| if (!that.zoomed) { | |
| that.scroller.style[transitionDuration] = '0'; | |
| that._resetPos(400); | |
| } | |
| }, | |
| scrollTo: function (x, y, time, relative) { | |
| var that = this, | |
| step = x, | |
| i, l; | |
| that.stop(); | |
| if (!step.length) step = [{ x: x, y: y, time: time, relative: relative }]; | |
| for (i=0, l=step.length; i<l; i++) { | |
| if (step[i].relative) { step[i].x = that.x - step[i].x; step[i].y = that.y - step[i].y; } | |
| that.steps.push({ x: step[i].x, y: step[i].y, time: step[i].time || 0 }); | |
| } | |
| that._startAni(); | |
| }, | |
| scrollToElement: function (el, time) { | |
| var that = this, pos; | |
| el = el.nodeType ? el : that.scroller.querySelector(el); | |
| if (!el) return; | |
| pos = that._offset(el); | |
| pos.left += that.wrapperOffsetLeft; | |
| pos.top += that.wrapperOffsetTop; | |
| pos.left = pos.left > 0 ? 0 : pos.left < that.maxScrollX ? that.maxScrollX : pos.left; | |
| pos.top = pos.top > that.minScrollY ? that.minScrollY : pos.top < that.maxScrollY ? that.maxScrollY : pos.top; | |
| time = time === undefined ? m.max(m.abs(pos.left)*2, m.abs(pos.top)*2) : time; | |
| that.scrollTo(pos.left, pos.top, time); | |
| }, | |
| scrollToPage: function (pageX, pageY, time) { | |
| var that = this, x, y; | |
| time = time === undefined ? 400 : time; | |
| if (that.options.onScrollStart) that.options.onScrollStart.call(that); | |
| if (that.options.snap) { | |
| pageX = pageX == 'next' ? that.currPageX+1 : pageX == 'prev' ? that.currPageX-1 : pageX; | |
| pageY = pageY == 'next' ? that.currPageY+1 : pageY == 'prev' ? that.currPageY-1 : pageY; | |
| pageX = pageX < 0 ? 0 : pageX > that.pagesX.length-1 ? that.pagesX.length-1 : pageX; | |
| pageY = pageY < 0 ? 0 : pageY > that.pagesY.length-1 ? that.pagesY.length-1 : pageY; | |
| that.currPageX = pageX; | |
| that.currPageY = pageY; | |
| x = that.pagesX[pageX]; | |
| y = that.pagesY[pageY]; | |
| } else { | |
| x = -that.wrapperW * pageX; | |
| y = -that.wrapperH * pageY; | |
| if (x < that.maxScrollX) x = that.maxScrollX; | |
| if (y < that.maxScrollY) y = that.maxScrollY; | |
| } | |
| that.scrollTo(x, y, time); | |
| }, | |
| disable: function () { | |
| this.stop(); | |
| this._resetPos(0); | |
| this.enabled = false; | |
| // If disabled after touchstart we make sure that there are no left over events | |
| this._unbind(MOVE_EV, window); | |
| this._unbind(END_EV, window); | |
| this._unbind(CANCEL_EV, window); | |
| }, | |
| enable: function () { | |
| this.enabled = true; | |
| }, | |
| stop: function () { | |
| if (this.options.useTransition) this._unbind(TRNEND_EV); | |
| else cancelFrame(this.aniTime); | |
| this.steps = []; | |
| this.moved = false; | |
| this.animating = false; | |
| }, | |
| zoom: function (x, y, scale, time) { | |
| var that = this, | |
| relScale = scale / that.scale; | |
| if (!that.options.useTransform) return; | |
| that.zoomed = true; | |
| time = time === undefined ? 200 : time; | |
| x = x - that.wrapperOffsetLeft - that.x; | |
| y = y - that.wrapperOffsetTop - that.y; | |
| that.x = x - x * relScale + that.x; | |
| that.y = y - y * relScale + that.y; | |
| that.scale = scale; | |
| that.refresh(); | |
| that.x = that.x > 0 ? 0 : that.x < that.maxScrollX ? that.maxScrollX : that.x; | |
| that.y = that.y > that.minScrollY ? that.minScrollY : that.y < that.maxScrollY ? that.maxScrollY : that.y; | |
| that.scroller.style[transitionDuration] = time + 'ms'; | |
| that.scroller.style[transform] = 'translate(' + that.x + 'px,' + that.y + 'px) scale(' + scale + ')' + translateZ; | |
| that.zoomed = false; | |
| }, | |
| isReady: function () { | |
| return !this.moved && !this.zoomed && !this.animating; | |
| } | |
| }; | |
| function prefixStyle (style) { | |
| if ( vendor === '' ) return style; | |
| style = style.charAt(0).toUpperCase() + style.substr(1); | |
| return vendor + style; | |
| } | |
| dummyStyle = null; // for the sake of it | |
| if (typeof exports !== 'undefined') exports.iScroll = iScroll; | |
| else window.iScroll = iScroll; | |
| })(window, document); |
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