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add iscroll library

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1 parent da89ec4 commit 2c260eb845f2431c10f075f1e022a1ecb045b4a4 @brion brion committed Jan 21, 2012
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  1. +1 −0 assets/www/index.html
  2. +1,076 −0 assets/www/js/iscroll.js
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1 assets/www/index.html
@@ -14,6 +14,7 @@
<script type="text/javascript" charset="utf-8" src="js/hogan.min.js"></script>
<script type="text/javascript" charset="utf-8" src="js/mediawiki.js"></script>
<script type="text/javascript" charset="utf-8" src="js/jquery.localize.js"></script>
+ <script type="text/javascript" charset="utf-8" src="js/iscroll.js"></script>
<script type="text/javascript" charset="utf-8" src="leaflet/leaflet.js"></script>
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1,076 assets/www/js/iscroll.js
@@ -0,0 +1,1076 @@
+/*!
+ * iScroll v4.1.9 ~ Copyright (c) 2011 Matteo Spinelli, http://cubiq.org
+ * Released under MIT license, http://cubiq.org/license
+ */
+(function(){
+var m = Math,
+ mround = function (r) { return r >> 0; },
+ vendor = (/webkit/i).test(navigator.appVersion) ? 'webkit' :
+ (/firefox/i).test(navigator.userAgent) ? 'Moz' :
+ (/trident/i).test(navigator.userAgent) ? 'ms' :
+ 'opera' in window ? 'O' : '',
+
+ // Browser capabilities
+ isAndroid = (/android/gi).test(navigator.appVersion),
+ isIDevice = (/iphone|ipad/gi).test(navigator.appVersion),
+ isPlaybook = (/playbook/gi).test(navigator.appVersion),
+ isTouchPad = (/hp-tablet/gi).test(navigator.appVersion),
+
+ has3d = 'WebKitCSSMatrix' in window && 'm11' in new WebKitCSSMatrix(),
+ hasTouch = 'ontouchstart' in window && !isTouchPad,
+ hasTransform = vendor + 'Transform' in document.documentElement.style,
+ hasTransitionEnd = isIDevice || isPlaybook,
+
+ 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
+ })(),
+
+ // Events
+ 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',
+ WHEEL_EV = vendor == 'Moz' ? 'DOMMouseScroll' : 'mousewheel',
+
+ // Helpers
+ trnOpen = 'translate' + (has3d ? '3d(' : '('),
+ trnClose = has3d ? ',0)' : ')',
+
+ // Constructor
+ iScroll = function (el, options) {
+ var that = this,
+ doc = document,
+ 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
+
+ // 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 : false;
+ 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 ){
+ trnOpen = 'translate(';
+ trnClose = ')';
+ }
+
+ // Set some default styles
+ that.scroller.style[vendor + 'TransitionProperty'] = that.options.useTransform ? '-' + vendor.toLowerCase() + '-transform' : 'top left';
+ that.scroller.style[vendor + 'TransitionDuration'] = '0';
+ that.scroller.style[vendor + 'TransformOrigin'] = '0 0';
+ if (that.options.useTransition) that.scroller.style[vendor + 'TransitionTimingFunction'] = 'cubic-bezier(0.33,0.66,0.66,1)';
+
+ if (that.options.useTransform) that.scroller.style[vendor + 'Transform'] = trnOpen + that.x + 'px,' + that.y + 'px' + trnClose;
+ 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) {
+ that._bind('mouseout', that.wrapper);
+ if (that.options.wheelAction != 'none')
+ that._bind(WHEEL_EV);
+ }
+
+ 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 WHEEL_EV: that._wheel(e); break;
+ case 'mouseout': that._mouseout(e); break;
+ case 'webkitTransitionEnd': 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,
+ doc = document,
+ bar;
+
+ if (!that[dir + 'Scrollbar']) {
+ if (that[dir + 'ScrollbarWrapper']) {
+ if (hasTransform) that[dir + 'ScrollbarIndicator'].style[vendor + '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;-' + vendor + '-transition-property:opacity;-' + vendor + '-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);-' + vendor + '-background-clip:padding-box;-' + vendor + '-box-sizing:border-box;' + (dir == 'h' ? 'height:100%' : 'width:100%') + ';-' + vendor + '-border-radius:3px;border-radius:3px';
+ }
+ bar.style.cssText += ';pointer-events:none;-' + vendor + '-transition-property:-' + vendor + '-transform;-' + vendor + '-transition-timing-function:cubic-bezier(0.33,0.66,0.66,1);-' + vendor + '-transition-duration:0;-' + vendor + '-transform:' + trnOpen + '0,0' + trnClose;
+ if (that.options.useTransition) bar.style.cssText += ';-' + vendor + '-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(mround(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(mround(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) {
+ x = this.hScroll ? x : 0;
+ y = this.vScroll ? y : 0;
+
+ if (this.options.useTransform) {
+ this.scroller.style[vendor + 'Transform'] = trnOpen + x + 'px,' + y + 'px' + trnClose + ' scale(' + this.scale + ')';
+ } else {
+ x = mround(x);
+ y = mround(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'] + mround(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'] - mround((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[vendor + 'TransitionDelay'] = '0';
+ that[dir + 'ScrollbarWrapper'].style.opacity = hidden && that.options.hideScrollbar ? '0' : '1';
+ that[dir + 'ScrollbarIndicator'].style[vendor + 'Transform'] = trnOpen + (dir == 'h' ? pos + 'px,0' : '0,' + pos + 'px') + trnClose;
+ },
+
+ _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)[vendor + 'Transform'].replace(/[^0-9-.,]/g, '').split(',');
+ x = matrix[4] * 1;
+ y = matrix[5] * 1;
+ } else {
+ x = getComputedStyle(that.scroller, null).left.replace(/[^0-9-]/g, '') * 1;
+ y = getComputedStyle(that.scroller, null).top.replace(/[^0-9-]/g, '') * 1;
+ }
+
+ if (x != that.x || y != that.y) {
+ if (that.options.useTransition) that._unbind('webkitTransitionEnd');
+ else cancelFrame(that.aniTime);
+ that.steps = [];
+ that._pos(x, y);
+ }
+ }
+
+ 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);
+ that._bind(END_EV);
+ that._bind(CANCEL_EV);
+ },
+
+ _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[vendor + 'Transform'] = trnOpen + newX + 'px,' + newY + 'px' + trnClose + ' scale(' + scale + ')';
+
+ 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;
+ }
+
+ if (that.absDistX < 6 && that.absDistY < 6) {
+ that.distX += deltaX;
+ that.distY += deltaY;
+ that.absDistX = m.abs(that.distX);
+ that.absDistY = m.abs(that.distY);
+
+ 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);
+ that._unbind(END_EV);
+ that._unbind(CANCEL_EV);
+
+ 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[vendor + 'TransitionDuration'] = '200ms';
+ that.scroller.style[vendor + 'Transform'] = trnOpen + that.x + 'px,' + that.y + 'px' + trnClose + ' scale(' + that.scale + ')';
+
+ 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 {
+ 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 = document.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(200);
+
+ 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(mround(newPosX), mround(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[vendor + 'TransitionDelay'] = '300ms';
+ that.hScrollbarWrapper.style.opacity = '0';
+ }
+ if (that.vScrollbar && that.options.hideScrollbar) {
+ if (vendor == 'webkit') that.vScrollbarWrapper.style[vendor + '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;
+
+ that.scrollTo(deltaX, deltaY, 0);
+ },
+
+ _mouseout: function (e) {
+ var t = e.relatedTarget;
+
+ if (!t) {
+ this._end(e);
+ return;
+ }
+
+ while (t = t.parentNode) if (t == this.wrapper) return;
+
+ this._end(e);
+ },
+
+ _transitionEnd: function (e) {
+ var that = this;
+
+ if (e.target != that.scroller) return;
+
+ that._unbind('webkitTransitionEnd');
+
+ 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('webkitTransitionEnd');
+ 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[vendor + 'TransitionDuration'] = time;
+ if (this.hScrollbar) this.hScrollbarIndicator.style[vendor + 'TransitionDuration'] = time;
+ if (this.vScrollbar) this.vScrollbarIndicator.style[vendor + '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: mround(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 = mround(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[vendor + '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);
+ that._unbind(END_EV);
+ that._unbind(CANCEL_EV);
+
+ if (!that.options.hasTouch) {
+ that._unbind('mouseout', that.wrapper);
+ that._unbind(WHEEL_EV);
+ }
+
+ if (that.options.useTransition) that._unbind('webkitTransitionEnd');
+
+ 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 = mround(that.scroller.offsetWidth * that.scale);
+ that.scrollerH = mround((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[vendor + 'TransitionDuration'] = '0';
+ that._resetPos(200);
+ }
+ },
+
+ 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);
+ this._unbind(END_EV);
+ this._unbind(CANCEL_EV);
+ },
+
+ enable: function () {
+ this.enabled = true;
+ },
+
+ stop: function () {
+ if (this.options.useTransition) this._unbind('webkitTransitionEnd');
+ 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[vendor + 'TransitionDuration'] = time + 'ms';
+ that.scroller.style[vendor + 'Transform'] = trnOpen + that.x + 'px,' + that.y + 'px' + trnClose + ' scale(' + scale + ')';
+ that.zoomed = false;
+ },
+
+ isReady: function () {
+ return !this.moved && !this.zoomed && !this.animating;
+ }
+};
+
+if (typeof exports !== 'undefined') exports.iScroll = iScroll;
+else window.iScroll = iScroll;
+
+})();

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