mirror of
https://github.com/moparisthebest/Fresh-Food-Finder
synced 2024-11-24 09:42:17 -05:00
1079 lines
33 KiB
JavaScript
Executable File
1079 lines
33 KiB
JavaScript
Executable File
/*!
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* iScroll v4.1.9 ~ Copyright (c) 2011 Matteo Spinelli, http://cubiq.org
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* Released under MIT license, http://cubiq.org/license
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*/
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(function(){
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var m = Math,
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mround = function (r) { return r >> 0; },
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vendor = (/webkit/i).test(navigator.appVersion) ? 'webkit' :
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(/firefox/i).test(navigator.userAgent) ? 'Moz' :
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(/trident/i).test(navigator.userAgent) ? 'ms' :
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'opera' in window ? 'O' : '',
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// Browser capabilities
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isAndroid = (/android/gi).test(navigator.appVersion),
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isIDevice = (/iphone|ipad/gi).test(navigator.appVersion),
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isPlaybook = (/playbook/gi).test(navigator.appVersion),
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isTouchPad = (/hp-tablet/gi).test(navigator.appVersion),
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has3d = 'WebKitCSSMatrix' in window && 'm11' in new WebKitCSSMatrix(),
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hasTouch = 'ontouchstart' in window && !isTouchPad,
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hasTransform = vendor + 'Transform' in document.documentElement.style,
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hasTransitionEnd = isIDevice || isPlaybook,
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nextFrame = (function() {
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return window.requestAnimationFrame
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|| window.webkitRequestAnimationFrame
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|| window.mozRequestAnimationFrame
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|| window.oRequestAnimationFrame
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|| window.msRequestAnimationFrame
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|| function(callback) { return setTimeout(callback, 1); }
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})(),
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cancelFrame = (function () {
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return window.cancelRequestAnimationFrame
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|| window.webkitCancelAnimationFrame
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|| window.webkitCancelRequestAnimationFrame
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|| window.mozCancelRequestAnimationFrame
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|| window.oCancelRequestAnimationFrame
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|| window.msCancelRequestAnimationFrame
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|| clearTimeout
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})(),
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// Events
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RESIZE_EV = 'onorientationchange' in window ? 'orientationchange' : 'resize',
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START_EV = hasTouch ? 'touchstart' : 'mousedown',
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MOVE_EV = hasTouch ? 'touchmove' : 'mousemove',
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END_EV = hasTouch ? 'touchend' : 'mouseup',
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CANCEL_EV = hasTouch ? 'touchcancel' : 'mouseup',
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WHEEL_EV = vendor == 'Moz' ? 'DOMMouseScroll' : 'mousewheel',
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// Helpers
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trnOpen = 'translate' + (has3d ? '3d(' : '('),
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trnClose = has3d ? ',0)' : ')',
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// Constructor
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iScroll = function (el, options) {
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var that = this,
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doc = document,
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i;
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that.wrapper = typeof el == 'object' ? el : doc.getElementById(el);
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that.wrapper.style.overflow = 'hidden';
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that.scroller = that.wrapper.children[0];
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// Default options
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that.options = {
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hScroll: true,
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vScroll: true,
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x: 0,
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y: 0,
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bounce: true,
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bounceLock: false,
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momentum: true,
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lockDirection: true,
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useTransform: true,
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useTransition: false,
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topOffset: 0,
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checkDOMChanges: false, // Experimental
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// Scrollbar
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hScrollbar: true,
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vScrollbar: true,
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fixedScrollbar: isAndroid,
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hideScrollbar: isIDevice,
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fadeScrollbar: isIDevice && has3d,
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scrollbarClass: '',
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// Zoom
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zoom: false,
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zoomMin: 1,
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zoomMax: 4,
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doubleTapZoom: 2,
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wheelAction: 'scroll',
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// Snap
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snap: false,
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snapThreshold: 1,
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// Events
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onRefresh: null,
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onBeforeScrollStart: function (e) { e.preventDefault(); },
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onScrollStart: null,
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onBeforeScrollMove: null,
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onScrollMove: null,
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onBeforeScrollEnd: null,
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onScrollEnd: null,
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onTouchEnd: null,
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onDestroy: null,
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onZoomStart: null,
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onZoom: null,
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onZoomEnd: null
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};
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// User defined options
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for (i in options) that.options[i] = options[i];
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// Set starting position
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that.x = that.options.x;
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that.y = that.options.y;
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// Normalize options
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that.options.useTransform = hasTransform ? that.options.useTransform : false;
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that.options.hScrollbar = that.options.hScroll && that.options.hScrollbar;
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that.options.vScrollbar = that.options.vScroll && that.options.vScrollbar;
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that.options.zoom = that.options.useTransform && that.options.zoom;
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that.options.useTransition = hasTransitionEnd && that.options.useTransition;
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// Helpers FIX ANDROID BUG!
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// translate3d and scale doesn't work together!
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// Ignoring 3d ONLY WHEN YOU SET that.options.zoom
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if ( that.options.zoom && isAndroid ){
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trnOpen = 'translate(';
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trnClose = ')';
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}
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// Set some default styles
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that.scroller.style[vendor + 'TransitionProperty'] = that.options.useTransform ? '-' + vendor.toLowerCase() + '-transform' : 'top left';
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that.scroller.style[vendor + 'TransitionDuration'] = '0';
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that.scroller.style[vendor + 'TransformOrigin'] = '0 0';
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if (that.options.useTransition) that.scroller.style[vendor + 'TransitionTimingFunction'] = 'cubic-bezier(0.33,0.66,0.66,1)';
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if (that.options.useTransform) that.scroller.style[vendor + 'Transform'] = trnOpen + that.x + 'px,' + that.y + 'px' + trnClose;
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else that.scroller.style.cssText += ';position:absolute;top:' + that.y + 'px;left:' + that.x + 'px';
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if (that.options.useTransition) that.options.fixedScrollbar = true;
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that.refresh();
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that._bind(RESIZE_EV, window);
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that._bind(START_EV);
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if (!hasTouch) {
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that._bind('mouseout', that.wrapper);
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if (that.options.wheelAction != 'none')
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that._bind(WHEEL_EV);
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}
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if (that.options.checkDOMChanges) that.checkDOMTime = setInterval(function () {
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that._checkDOMChanges();
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}, 500);
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};
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// Prototype
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iScroll.prototype = {
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enabled: true,
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x: 0,
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y: 0,
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steps: [],
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scale: 1,
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currPageX: 0, currPageY: 0,
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pagesX: [], pagesY: [],
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aniTime: null,
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wheelZoomCount: 0,
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handleEvent: function (e) {
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var that = this;
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switch(e.type) {
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case START_EV:
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if (!hasTouch && e.button !== 0) return;
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var nodeName = e.target.nodeName.toUpperCase();
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if (nodeName == "TEXTAREA" || nodeName == "INPUT" || nodeName == "SELECT" ) return;
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that._start(e);
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break;
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case MOVE_EV: that._move(e); break;
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case END_EV:
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case CANCEL_EV: that._end(e); break;
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case RESIZE_EV: that._resize(); break;
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case WHEEL_EV: that._wheel(e); break;
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case 'mouseout': that._mouseout(e); break;
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case 'webkitTransitionEnd': that._transitionEnd(e); break;
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}
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},
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_checkDOMChanges: function () {
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if (this.moved || this.zoomed || this.animating ||
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(this.scrollerW == this.scroller.offsetWidth * this.scale && this.scrollerH == this.scroller.offsetHeight * this.scale)) return;
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this.refresh();
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},
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_scrollbar: function (dir) {
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var that = this,
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doc = document,
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bar;
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if (!that[dir + 'Scrollbar']) {
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if (that[dir + 'ScrollbarWrapper']) {
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if (hasTransform) that[dir + 'ScrollbarIndicator'].style[vendor + 'Transform'] = '';
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that[dir + 'ScrollbarWrapper'].parentNode.removeChild(that[dir + 'ScrollbarWrapper']);
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that[dir + 'ScrollbarWrapper'] = null;
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that[dir + 'ScrollbarIndicator'] = null;
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}
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return;
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}
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if (!that[dir + 'ScrollbarWrapper']) {
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// Create the scrollbar wrapper
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bar = doc.createElement('div');
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if (that.options.scrollbarClass) bar.className = that.options.scrollbarClass + dir.toUpperCase();
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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');
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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');
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that.wrapper.appendChild(bar);
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that[dir + 'ScrollbarWrapper'] = bar;
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// Create the scrollbar indicator
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bar = doc.createElement('div');
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if (!that.options.scrollbarClass) {
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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';
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}
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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;
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if (that.options.useTransition) bar.style.cssText += ';-' + vendor + '-transition-timing-function:cubic-bezier(0.33,0.66,0.66,1)';
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that[dir + 'ScrollbarWrapper'].appendChild(bar);
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that[dir + 'ScrollbarIndicator'] = bar;
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}
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if (dir == 'h') {
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that.hScrollbarSize = that.hScrollbarWrapper.clientWidth;
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that.hScrollbarIndicatorSize = m.max(mround(that.hScrollbarSize * that.hScrollbarSize / that.scrollerW), 8);
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that.hScrollbarIndicator.style.width = that.hScrollbarIndicatorSize + 'px';
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that.hScrollbarMaxScroll = that.hScrollbarSize - that.hScrollbarIndicatorSize;
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that.hScrollbarProp = that.hScrollbarMaxScroll / that.maxScrollX;
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} else {
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that.vScrollbarSize = that.vScrollbarWrapper.clientHeight;
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that.vScrollbarIndicatorSize = m.max(mround(that.vScrollbarSize * that.vScrollbarSize / that.scrollerH), 8);
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that.vScrollbarIndicator.style.height = that.vScrollbarIndicatorSize + 'px';
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that.vScrollbarMaxScroll = that.vScrollbarSize - that.vScrollbarIndicatorSize;
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that.vScrollbarProp = that.vScrollbarMaxScroll / that.maxScrollY;
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}
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// Reset position
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that._scrollbarPos(dir, true);
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},
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_resize: function () {
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var that = this;
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setTimeout(function () { that.refresh(); }, isAndroid ? 200 : 0);
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},
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_pos: function (x, y) {
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x = this.hScroll ? x : 0;
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y = this.vScroll ? y : 0;
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if (this.options.useTransform) {
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this.scroller.style[vendor + 'Transform'] = trnOpen + x + 'px,' + y + 'px' + trnClose + ' scale(' + this.scale + ')';
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} else {
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x = mround(x);
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y = mround(y);
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this.scroller.style.left = x + 'px';
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this.scroller.style.top = y + 'px';
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}
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this.x = x;
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this.y = y;
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this._scrollbarPos('h');
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this._scrollbarPos('v');
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},
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_scrollbarPos: function (dir, hidden) {
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var that = this,
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pos = dir == 'h' ? that.x : that.y,
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size;
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if (!that[dir + 'Scrollbar']) return;
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pos = that[dir + 'ScrollbarProp'] * pos;
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if (pos < 0) {
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if (!that.options.fixedScrollbar) {
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size = that[dir + 'ScrollbarIndicatorSize'] + mround(pos * 3);
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if (size < 8) size = 8;
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that[dir + 'ScrollbarIndicator'].style[dir == 'h' ? 'width' : 'height'] = size + 'px';
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}
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pos = 0;
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} else if (pos > that[dir + 'ScrollbarMaxScroll']) {
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if (!that.options.fixedScrollbar) {
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size = that[dir + 'ScrollbarIndicatorSize'] - mround((pos - that[dir + 'ScrollbarMaxScroll']) * 3);
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if (size < 8) size = 8;
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that[dir + 'ScrollbarIndicator'].style[dir == 'h' ? 'width' : 'height'] = size + 'px';
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pos = that[dir + 'ScrollbarMaxScroll'] + (that[dir + 'ScrollbarIndicatorSize'] - size);
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} else {
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pos = that[dir + 'ScrollbarMaxScroll'];
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}
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}
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that[dir + 'ScrollbarWrapper'].style[vendor + 'TransitionDelay'] = '0';
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that[dir + 'ScrollbarWrapper'].style.opacity = hidden && that.options.hideScrollbar ? '0' : '1';
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that[dir + 'ScrollbarIndicator'].style[vendor + 'Transform'] = trnOpen + (dir == 'h' ? pos + 'px,0' : '0,' + pos + 'px') + trnClose;
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},
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_start: function (e) {
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var that = this,
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point = hasTouch ? e.touches[0] : e,
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matrix, x, y,
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c1, c2;
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if (!that.enabled) return;
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if (that.options.onBeforeScrollStart) that.options.onBeforeScrollStart.call(that, e);
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if (that.options.useTransition || that.options.zoom) that._transitionTime(0);
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that.moved = false;
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that.animating = false;
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that.zoomed = false;
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that.distX = 0;
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that.distY = 0;
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that.absDistX = 0;
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that.absDistY = 0;
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that.dirX = 0;
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that.dirY = 0;
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// Gesture start
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if (that.options.zoom && hasTouch && e.touches.length > 1) {
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c1 = m.abs(e.touches[0].pageX-e.touches[1].pageX);
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c2 = m.abs(e.touches[0].pageY-e.touches[1].pageY);
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that.touchesDistStart = m.sqrt(c1 * c1 + c2 * c2);
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that.originX = m.abs(e.touches[0].pageX + e.touches[1].pageX - that.wrapperOffsetLeft * 2) / 2 - that.x;
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that.originY = m.abs(e.touches[0].pageY + e.touches[1].pageY - that.wrapperOffsetTop * 2) / 2 - that.y;
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if (that.options.onZoomStart) that.options.onZoomStart.call(that, e);
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}
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if (that.options.momentum) {
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if (that.options.useTransform) {
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// Very lame general purpose alternative to CSSMatrix
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matrix = getComputedStyle(that.scroller, null)[vendor + 'Transform'].replace(/[^0-9-.,]/g, '').split(',');
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x = matrix[4] * 1;
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y = matrix[5] * 1;
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} else {
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x = getComputedStyle(that.scroller, null).left.replace(/[^0-9-]/g, '') * 1;
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y = getComputedStyle(that.scroller, null).top.replace(/[^0-9-]/g, '') * 1;
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}
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if (x != that.x || y != that.y) {
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if (that.options.useTransition) that._unbind('webkitTransitionEnd');
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else cancelFrame(that.aniTime);
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that.steps = [];
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that._pos(x, y);
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}
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}
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that.absStartX = that.x; // Needed by snap threshold
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that.absStartY = that.y;
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that.startX = that.x;
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that.startY = that.y;
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that.pointX = point.pageX;
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that.pointY = point.pageY;
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that.startTime = e.timeStamp || Date.now();
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if (that.options.onScrollStart) that.options.onScrollStart.call(that, e);
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that._bind(MOVE_EV);
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that._bind(END_EV);
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that._bind(CANCEL_EV);
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},
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_move: function (e) {
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var that = this,
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point = hasTouch ? e.touches[0] : e,
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deltaX = point.pageX - that.pointX,
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deltaY = point.pageY - that.pointY,
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newX = that.x + deltaX,
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newY = that.y + deltaY,
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c1, c2, scale,
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timestamp = e.timeStamp || Date.now();
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if (that.options.onBeforeScrollMove) that.options.onBeforeScrollMove.call(that, e);
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// Zoom
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if (that.options.zoom && hasTouch && e.touches.length > 1) {
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c1 = m.abs(e.touches[0].pageX - e.touches[1].pageX);
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c2 = m.abs(e.touches[0].pageY - e.touches[1].pageY);
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that.touchesDist = m.sqrt(c1*c1+c2*c2);
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that.zoomed = true;
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scale = 1 / that.touchesDistStart * that.touchesDist * this.scale;
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if (scale < that.options.zoomMin) scale = 0.5 * that.options.zoomMin * Math.pow(2.0, scale / that.options.zoomMin);
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else if (scale > that.options.zoomMax) scale = 2.0 * that.options.zoomMax * Math.pow(0.5, that.options.zoomMax / scale);
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that.lastScale = scale / this.scale;
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newX = this.originX - this.originX * that.lastScale + this.x,
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newY = this.originY - this.originY * that.lastScale + this.y;
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this.scroller.style[vendor + 'Transform'] = trnOpen + newX + 'px,' + newY + 'px' + trnClose + ' scale(' + scale + ')';
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if (that.options.onZoom) that.options.onZoom.call(that, e);
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return;
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}
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that.pointX = point.pageX;
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that.pointY = point.pageY;
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// Slow down if outside of the boundaries
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if (newX > 0 || newX < that.maxScrollX) {
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newX = that.options.bounce ? that.x + (deltaX / 2) : newX >= 0 || that.maxScrollX >= 0 ? 0 : that.maxScrollX;
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}
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if (newY > that.minScrollY || newY < that.maxScrollY) {
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newY = that.options.bounce ? that.y + (deltaY / 2) : newY >= that.minScrollY || that.maxScrollY >= 0 ? that.minScrollY : that.maxScrollY;
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}
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that.distX += deltaX;
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that.distY += deltaY;
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that.absDistX = m.abs(that.distX);
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that.absDistY = m.abs(that.distY);
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if (that.absDistX < 6 && that.absDistY < 6) {
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return;
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}
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// Lock direction
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if (that.options.lockDirection) {
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if (that.absDistX > that.absDistY + 5) {
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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');
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|
that._scrollbar('v');
|
|
|
|
if (!that.zoomed) {
|
|
that.scroller.style[vendor + 'TransitionDuration'] = '0';
|
|
that._resetPos(200);
|
|
}
|
|
},
|
|
|
|
scrollTo: function (x, y, time, relative) {
|
|
var that = this,
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|
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; }
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|
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;
|
|
|
|
})();
|