parallax.js

function mr_parallax(){"use strict";function a(a){for(var b=0;b<a.length;b++)if("undefined"!=typeof document.body.style[a[b]])return a[b];return null}function b(){var a,b=0;return f()?(b=jQuery(".viu").find("nav:first").outerHeight(!0),a=jQuery(".viu").find("nav:first").css("position"),("absolute"===a||"fixed"===a)&&(b=0)):b=jQuery(document).find("nav:first").outerHeight(!0),Math.floor(b)}function c(){return/Android/i.test(navigator.userAgent||navigator.vendor||window.opera)?screen.height*window.devicePixelRatio:/iPad|iPhone|iPod/i.test(navigator.userAgent||navigator.vendor||window.opera)?0===window.orientation&&screen.height>screen.width?screen.height:screen.width:Math.max(document.documentElement.clientHeight,window.innerHeight||0)}function d(){p===!1&&(p=!0,h(q.mr_parallaxBackground))}function e(a){var b={};return a&&"[object Function]"===b.toString.call(a)}function f(){return"undefined"==typeof window.mr_variant?!1:!0}var g,h=window.requestAnimationFrame||window.mozRequestAnimationFrame||window.webkitRequestAnimationFrame||window.msRequestAnimationFrame,i=["transform","msTransform","webkitTransform","mozTransform","oTransform"],j=a(i),k="translate3d(0,",l="px,0)",m=c(),n=0,o=window,p=(f(),!1),q=this;jQuery(document).ready(function(){q.documentReady()}),jQuery(window).on("load",function(){q.windowLoad()}),this.documentReady=function(a){return m=c(),jQuery("body").hasClass("parallax-2d")&&(k="translate(0,",l="px)"),h&&(q.profileParallaxElements(),q.setupParallax()),e(a)?void a():void 0},this.windowLoad=function(){m=c(),n=b(),window.mr_parallax.profileParallaxElements()},this.setupParallax=function(){f()&&(o=jQuery(".viu").get(0)),"undefined"!=typeof o&&(("undefined"==typeof window.mr||f())&&(o.onscroll=d),window.addEventListener("resize",function(){m=c(),n=b(),q.profileParallaxElements(),q.mr_parallaxBackground()},!1),window.addEventListener("orientationchange",function(){},!1),q.mr_parallaxBackground())},this.profileParallaxElements=function(){var a;g=[],m=c(),n=b();var d=".parallax > .background-image-holder, .parallax ul.slides > li > .background-image-holder, .parallax ul.slides .owl-item > li > .background-image-holder";f()&&(d=".viu .parallax > .background-image-holder, .viu .parallax ul.slides > li > .background-image-holder, .parallax ul.slides .owl-item > li > .background-image-holder"),a=jQuery(d),/Android|iPad|iPhone|iPod/i.test(navigator.userAgent||navigator.vendor||window.opera)&&(a=a.not(".parallax-disable-mobile .background-image-holder, body.parallax-disable-mobile *")),jQuery(a).each(function(a){var b=jQuery(this).closest(".parallax"),c=f()?b.position().top:b.offset().top,d=screen.height,e=screen.width;g.push({section:b.get(0),outerHeight:b.outerHeight(),elemTop:c,elemBottom:c+b.outerHeight(),isFirstSection:b.is(":nth-of-type(1)")?!0:!1,imageHolder:jQuery(this).get(0)}),/iPad|iPhone|iPod/i.test(navigator.userAgent||navigator.vendor||window.opera)&&screen.width<1024&&(0===window.orientation&&d>e?(jQuery(this).css("top","-"+d/2+"px"),jQuery(this).css({"min-height":b.is(":nth-of-type(1)")?1.5*d:1.2*d})):(jQuery(this).css("top","-"+e/2+"px"),jQuery(this).css({"min-height":b.is(":nth-of-type(1)")?1.5*e:1.2*e}))),/iPad|iPhone|iPod/i.test(navigator.userAgent||navigator.vendor||window.opera)&&screen.width>=1024&&(0===window.orientation&&d>e?(jQuery(this).css("top","-"+d/2+"px"),jQuery(this).css({"min-height":b.is(":nth-of-type(1)")?1.5*d:1.2*d})):(jQuery(this).css("top","-"+e/2+"px"),jQuery(this).css({"min-height":b.is(":nth-of-type(1)")?1.5*e:1.2*e}))),/Android/i.test(navigator.userAgent||navigator.vendor||window.opera)&&(jQuery(this).css({top:"-"+d*window.devicePixelRatio/(b.is(":nth-of-type(1)")?8:2)+"px"}),jQuery(this).css({"min-height":b.is(":nth-of-type(1)")?1.5*d:1.2*d})),f()?f()&&(b.is(":nth-of-type(1)")?q.mr_setTranslate3DTransform(jQuery(this).get(0),0===q.mr_getScrollPosition()?0:q.mr_getScrollPosition()/2):q.mr_setTranslate3DTransform(jQuery(this).get(0),(q.mr_getScrollPosition()-c-n)/2)):b.is(":nth-of-type(1)")?q.mr_setTranslate3DTransform(jQuery(this).get(0),0===q.mr_getScrollPosition()?0:q.mr_getScrollPosition()/2):q.mr_setTranslate3DTransform(jQuery(this).get(0),(q.mr_getScrollPosition()+m-c)/2)})},this.mr_parallaxBackground=function(){for(var a,b=g.length,c="undefined"==typeof mr||f()?q.mr_getScrollPosition():mr.scroll.y;b--;)a=g[b],f()?c+m-n>a.elemTop&&c-n<a.elemBottom&&(a.isFirstSection?a.imageHolder.style[j]=k+c/2+l:a.imageHolder.style[j]=k+(c-a.elemTop-n)/2+l):c+m>=a.elemTop&&c<=a.elemBottom&&(a.isFirstSection?a.imageHolder.style[j]=k+c/2+l:a.imageHolder.style[j]=k+(c+m-a.elemTop)/2+l);p=!1},this.mr_setTranslate3DTransform=function(a,b){a.style[j]=k+b+l},this.mr_getScrollPosition=function(){return o!==window?o.scrollTop:0===document.documentElement.scrollTop?document.body.scrollTop:document.documentElement.scrollTop}}window.mr_parallax=new mr_parallax;