2 lines
12 KiB
JavaScript
2 lines
12 KiB
JavaScript
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/*! Stellar.js v0.6.2 | Copyright 2014, Mark Dalgleish | http://markdalgleish.com/projects/stellar.js | http://markdalgleish.mit-license.org */
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!function(a,b,c,d){function e(b,c){this.element=b,this.options=a.extend({},g,c),this._defaults=g,this._name=f,this.init()}var f="stellar",g={scrollProperty:"scroll",positionProperty:"position",horizontalScrolling:!0,verticalScrolling:!0,horizontalOffset:0,verticalOffset:0,responsive:!1,parallaxBackgrounds:!0,parallaxElements:!0,hideDistantElements:!0,hideElement:function(a){a.hide()},showElement:function(a){a.show()}},h={scroll:{getLeft:function(a){return a.scrollLeft()},setLeft:function(a,b){a.scrollLeft(b)},getTop:function(a){return a.scrollTop()},setTop:function(a,b){a.scrollTop(b)}},position:{getLeft:function(a){return-1*parseInt(a.css("left"),10)},getTop:function(a){return-1*parseInt(a.css("top"),10)}},margin:{getLeft:function(a){return-1*parseInt(a.css("margin-left"),10)},getTop:function(a){return-1*parseInt(a.css("margin-top"),10)}},transform:{getLeft:function(a){var b=getComputedStyle(a[0])[k];return"none"!==b?-1*parseInt(b.match(/(-?[0-9]+)/g)[4],10):0},getTop:function(a){var b=getComputedStyle(a[0])[k];return"none"!==b?-1*parseInt(b.match(/(-?[0-9]+)/g)[5],10):0}}},i={position:{setLeft:function(a,b){a.css("left",b)},setTop:function(a,b){a.css("top",b)}},transform:{setPosition:function(a,b,c,d,e){a[0].style[k]="translate3d("+(b-c)+"px, "+(d-e)+"px, 0)"}}},j=function(){var b,c=/^(Moz|Webkit|Khtml|O|ms|Icab)(?=[A-Z])/,d=a("script")[0].style,e="";for(b in d)if(c.test(b)){e=b.match(c)[0];break}return"WebkitOpacity"in d&&(e="Webkit"),"KhtmlOpacity"in d&&(e="Khtml"),function(a){return e+(e.length>0?a.charAt(0).toUpperCase()+a.slice(1):a)}}(),k=j("transform"),l=a("<div />",{style:"background:#fff"}).css("background-position-x")!==d,m=l?function(a,b,c){a.css({"background-position-x":b,"background-position-y":c})}:function(a,b,c){a.css("background-position",b+" "+c)},n=l?function(a){return[a.css("background-position-x"),a.css("background-position-y")]}:function(a){return a.css("background-position").split(" ")},o=b.requestAnimationFrame||b.webkitRequestAnimationFrame||b.mozRequestAnimationFrame||b.oRequestAnimationFrame||b.msRequestAnimationFrame||function(a){setTimeout(a,1e3/60)};e.prototype={init:function(){this.options.name=f+"_"+Math.floor(1e9*Math.random()),this._defineElements(),this._defineGetters(),this._defineSetters(),this._handleWindowLoadAndResize(),this._detectViewport(),this.refresh({firstLoad:!0}),"scroll"===this.options.scrollProperty?this._handleScrollEvent():this._startAnimationLoop()},_defineElements:function(){this.element===c.body&&(this.element=b),this.$scrollElement=a(this.element),this.$element=this.element===b?a("body"):this.$scrollElement,this.$viewportElement=this.options.viewportElement!==d?a(this.options.viewportElement):this.$scrollElement[0]===b||"scroll"===this.options.scrollProperty?this.$scrollElement:this.$scrollElement.parent()},_defineGetters:function(){var a=this,b=h[a.options.scrollProperty];this._getScrollLeft=function(){return b.getLeft(a.$scrollElement)},this._getScrollTop=function(){return b.getTop(a.$scrollElement)}},_defineSetters:function(){var b=this,c=h[b.options.scrollProperty],d=i[b.options.positionProperty],e=c.setLeft,f=c.setTop;this._setScrollLeft="function"==typeof e?function(a){e(b.$scrollElement,a)}:a.noop,this._setScrollTop="function"==typeof f?function(a){f(b.$scrollElement,a)}:a.noop,this._setPosition=d.setPosition||function(a,c,e,f,g){b.options.horizontalScrolling&&d.setLeft(a,c,e),b.options.verticalScrolling&&d.setTop(a,f,g)}},_handleWindowLoadAndResize:function(){var c=this,d=a(b);c.options.responsive&&d.bind("load."+this.name,function(){c.refresh()}),d.bind("resize."+this.name,function(){c._detectViewport(),c.options.responsive&&c.refresh()})},refresh:function(c){var d=this,e=d._getScrollLeft(),f=d._getScrollTop();c&&c.firstLoad||this._reset(),this._setScrollLeft(0),this._setScrollTop(0),this._setOffsets(),this._findParticles(),this._findBackgrounds(),c&&c.firstLoad&&/WebKit/.test(navigator.userAgent)&&a(b).load(function(){var a=d._getScrollLeft(),b=d._getScrollTop();d._setScrollLeft(a+1),d._setScrollTop(b+1),d._setScrollLeft(a),d._setScrollTop(b)}),this._se
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