8 lines
26 KiB
JavaScript
8 lines
26 KiB
JavaScript
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/*
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* skrollr core
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*
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* Alexander Prinzhorn - https://github.com/Prinzhorn/skrollr
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*
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* Free to use under terms of MIT license
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*/
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(function(window,document,undefined){var skrollr={get:function(){return _instance},init:function(options){return _instance||new Skrollr(options)},VERSION:"0.6.30"};var hasProp=Object.prototype.hasOwnProperty;var Math=window.Math;var getStyle=window.getComputedStyle;var documentElement;var body;var EVENT_TOUCHSTART="touchstart";var EVENT_TOUCHMOVE="touchmove";var EVENT_TOUCHCANCEL="touchcancel";var EVENT_TOUCHEND="touchend";var SKROLLABLE_CLASS="skrollable";var SKROLLABLE_BEFORE_CLASS=SKROLLABLE_CLASS+"-before";var SKROLLABLE_BETWEEN_CLASS=SKROLLABLE_CLASS+"-between";var SKROLLABLE_AFTER_CLASS=SKROLLABLE_CLASS+"-after";var SKROLLR_CLASS="skrollr";var NO_SKROLLR_CLASS="no-"+SKROLLR_CLASS;var SKROLLR_DESKTOP_CLASS=SKROLLR_CLASS+"-desktop";var SKROLLR_MOBILE_CLASS=SKROLLR_CLASS+"-mobile";var DEFAULT_EASING="linear";var DEFAULT_DURATION=1000;var DEFAULT_MOBILE_DECELERATION=0.004;var DEFAULT_SKROLLRBODY="skrollr-body";var DEFAULT_SMOOTH_SCROLLING_DURATION=200;var ANCHOR_START="start";var ANCHOR_END="end";var ANCHOR_CENTER="center";var ANCHOR_BOTTOM="bottom";var SKROLLABLE_ID_DOM_PROPERTY="___skrollable_id";var rxTouchIgnoreTags=/^(?:input|textarea|button|select)$/i;var rxTrim=/^\s+|\s+$/g;var rxKeyframeAttribute=/^data(?:-(_\w+))?(?:-?(-?\d*\.?\d+p?))?(?:-?(start|end|top|center|bottom))?(?:-?(top|center|bottom))?$/;var rxPropValue=/\s*(@?[\w\-\[\]]+)\s*:\s*(.+?)\s*(?:;|$)/gi;var rxPropEasing=/^(@?[a-z\-]+)\[(\w+)\]$/;var rxCamelCase=/-([a-z0-9_])/g;var rxCamelCaseFn=function(str,letter){return letter.toUpperCase()};var rxNumericValue=/[\-+]?[\d]*\.?[\d]+/g;var rxInterpolateString=/\{\?\}/g;var rxRGBAIntegerColor=/rgba?\(\s*-?\d+\s*,\s*-?\d+\s*,\s*-?\d+/g;var rxGradient=/[a-z\-]+-gradient/g;var theCSSPrefix="";var theDashedCSSPrefix="";var detectCSSPrefix=function(){var rxPrefixes=/^(?:O|Moz|webkit|ms)|(?:-(?:o|moz|webkit|ms)-)/;if(!getStyle){return}var style=getStyle(body,null);for(var k in style){theCSSPrefix=(k.match(rxPrefixes)||(+k==k&&style[k].match(rxPrefixes)));if(theCSSPrefix){break}}if(!theCSSPrefix){theCSSPrefix=theDashedCSSPrefix="";return}theCSSPrefix=theCSSPrefix[0];if(theCSSPrefix.slice(0,1)==="-"){theDashedCSSPrefix=theCSSPrefix;theCSSPrefix=({"-webkit-":"webkit","-moz-":"Moz","-ms-":"ms","-o-":"O"})[theCSSPrefix]}else{theDashedCSSPrefix="-"+theCSSPrefix.toLowerCase()+"-"}};var polyfillRAF=function(){var requestAnimFrame=window.requestAnimationFrame||window[theCSSPrefix.toLowerCase()+"RequestAnimationFrame"];var lastTime=_now();if(_isMobile||!requestAnimFrame){requestAnimFrame=function(callback){var deltaTime=_now()-lastTime;var delay=Math.max(0,1000/60-deltaTime);return window.setTimeout(function(){lastTime=_now();callback()},delay)}}return requestAnimFrame};var polyfillCAF=function(){var cancelAnimFrame=window.cancelAnimationFrame||window[theCSSPrefix.toLowerCase()+"CancelAnimationFrame"];if(_isMobile||!cancelAnimFrame){cancelAnimFrame=function(timeout){return window.clearTimeout(timeout)}}return cancelAnimFrame};var easings={begin:function(){return 0},end:function(){return 1},linear:function(p){return p},quadratic:function(p){return p*p},cubic:function(p){return p*p*p},swing:function(p){return(-Math.cos(p*Math.PI)/2)+0.5},sqrt:function(p){return Math.sqrt(p)},outCubic:function(p){return(Math.pow((p-1),3)+1)},bounce:function(p){var a;if(p<=0.5083){a=3}else{if(p<=0.8489){a=9}else{if(p<=0.96208){a=27}else{if(p<=0.99981){a=91}else{return 1}}}}return 1-Math.abs(3*Math.cos(p*a*1.028)/a)}};function Skrollr(options){documentElement=document.documentElement;body=document.body;detectCSSPrefix();_instance=this;options=options||{};_constants=options.constants||{};if(options.easing){for(var e in options.easing){easings[e]=options.easing[e]}}_edgeStrategy=options.edgeStrategy||"set";_listeners={beforerender:options.beforerender,render:options.render,keyframe:options.keyframe};_forceHeight=options.forceHeight!==false;if(_forceHeight){_scale=options.scale||1}_mobileDeceleration=options.mobileDeceleration||DEFAULT_MOBILE_DECELERATION;_smoothScrollingEnabled=options.smoothScrolling!==false;_smoothScrollingDuration=options.smo
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