https://www.classroom365.co.uk/wp-content/cache/flying-press/818740c27856.avia-snippet-parallax.js

1(function($){"use strict";$.avia_utilities=$.avia_utilities||{};$(function(){if($.fn.avia_parallax){$('.av-parallax,.av-parallax-object').avia_parallax()}});var AviaObjectParallaxElement=function(options,element){if(!(this.transform||this.transform3d)){return}
2this.options=$.extend({},options);this.win=$(window);this.body=$('body');this.isMobile=$.avia_utilities.isMobile,this.winHeight=this.win.height();this.winWidth=this.win.width();this.el=$(element).addClass('active-parallax');this.objectType=this.el.hasClass('av-parallax-object')?'object':'background-image';this.elInner=this.el;this.elBackgroundParent=this.el.parent();this.elParallax=this.el.data('parallax')||{};this.direction='';this.speed=0.5;this.elProperty={};this.ticking=!1,this.isTransformed=!1;if($.avia_utilities.supported.transition===undefined){$.avia_utilities.supported.transition=$.avia_utilities.supports('transition')}
3this._init(options)};AviaObjectParallaxElement.prototype={mediaQueries:{'av-mini-':'(max-width: 479px)','av-small-':'(min-width: 480px) and (max-width: 767px)','av-medium-':'(min-width: 768px) and (max-width: 989px)','av-desktop-':'(min-width: 990px)'},transform:document.documentElement.className.indexOf('avia_transform')!==-1,transform3d:document.documentElement.className.indexOf('avia_transform3d')!==-1,mobileNoAnimation:$('body').hasClass('avia-mobile-no-animations'),defaultSpeed:0.5,defaultDirections:['bottom_top','left_right','right_left','no_parallax'],transformCSSProps:['transform','-webkit-transform','-moz-transform','-ms-transform','-o-transform'],matrixDef:[1,0,0,1,0,0],matrix3dDef:[1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1],_init:function(){var _self=this;if(typeof this.el.data('parallax-selector')!='undefined'&&this.el.data('parallax-selector')!==''){this.elInner=this.el.find(this.el.data('parallax-selector'));if(this.elInner.length==0){this.elInner=this.el}}
4if('background-image'==this.objectType){if(this.isMobile&&this.mobileNoAnimation){return}
5this.elParallax.parallax='bottom_top';this.elParallax.parallax_speed=parseFloat(this.el.data('avia-parallax-ratio'))||0.5}
6setTimeout(function(){_self._fetchProperties()},30);this.win.on('debouncedresize av-height-change',_self._fetchProperties.bind(_self));this.body.on('av_resize_finished',_self._fetchProperties.bind(_self));setTimeout(function(){_self.win.on('scroll',_self._onScroll.bind(_self))},100)},_setParallaxProps:function(){if('background-image'==this.objectType){this.direction=this.elParallax.parallax;this.speed=this.elParallax.parallax_speed;return}
7var all_direction=this.elParallax.parallax||'',all_speed=this.elParallax.parallax_speed||'',resp_direction='',resp_speed='',media='all';if(this.defaultDirections.indexOf(all_direction)<0){all_direction='no_parallax'}
8if(typeof window.matchMedia=='function'){$.each(this.mediaQueries,function(key,query){var mql=window.matchMedia(query);if(mql.matches){media=key;return!1}})}
9if('all'==media){this.direction=all_direction;this.speed=''==all_speed?this.defaultSpeed:parseFloat(all_speed)/100.0;return}
10resp_direction=this.elParallax[media+'parallax']||'';resp_speed=this.elParallax[media+'parallax_speed']||'';if('inherit'==resp_direction){resp_direction=all_direction;resp_speed=all_speed}
11if(this.defaultDirections.indexOf(resp_direction)<0){resp_direction='no_parallax'}
12this.direction=resp_direction;this.speed=''==resp_speed?this.defaultSpeed:parseFloat(resp_speed)/100.0},_getTranslateObject:function(element){var translate={type:'',matrix:[],x:0,y:0,z:0};$.each(this.transformCSSProps,function(i,prop){var found=element.css(prop);if('string'!=typeof found||'none'==found){return}
13if(found.indexOf('matrix')>=0){var matrixValues=found.match(/matrix.*\((.+)\)/)[1].split(', ');if(found.indexOf('matrix3d')>=0){translate.type='3d';translate.matrix=matrixValues;translate.x=matrixValues[12];translate.y=matrixValues[13];translate.z=matrixValues[14]}else{translate.type='2d';translate.matrix=matrixValues;translate.x=matrixValues[4];translate.y=matrixValues[5]}
14return!1}else{translate.type='';var matchX=found.match(/translateX\((-?\d+\.?\d*px)\)/);if(matchX){translate.x=parseInt(matchX[1],10)}
15var matchY=found.match(/translateY\((-?\d+\.?\d*px)\)/);if(matchY){translate.y=parseInt(matchY[1],10)}}});return translate}

15,_getTranslateMatrix:function(translateObj,changes){var matrix='';$.each(changes,function(key,value){translateObj[key]=value});if(this.transform3d){var matrix3d=this.matrix3dDef.slice(0);switch(translateObj.type){case '2d':matrix3d[0]=translateObj.matrix[0];matrix3d[1]=translateObj.matrix[1];matrix3d[4]=translateObj.matrix[2];matrix3d[5]=translateObj.matrix[3];matrix3d[12]=translateObj.x;matrix3d[13]=translateObj.y;break;case '3d':matrix3d=translateObj.matrix.slice(0);matrix3d[12]=translateObj.x;matrix3d[13]=translateObj.y;matrix3d[14]=translateObj.z;break;default:matrix3d[12]=translateObj.x;matrix3d[13]=translateObj.y;break}
16matrix='matrix3d('+matrix3d.join(', ')+')'}else if(this.transform){var matrix2d=this.matrixDef.slice(0);switch(translateObj.type){case '2d':matrix2d=translateObj.matrix.slice(0);matrix2d[4]=translateObj.x;matrix2d[5]=translateObj.y;break;case '3d':matrix2d[0]=translateObj.matrix[0];matrix2d[1]=translateObj.matrix[1];matrix2d[2]=translateObj.matrix[4];matrix2d[3]=translateObj.matrix[5];matrix2d[4]=translateObj.x;matrix2d[5]=translateObj.y;break;default:matrix2d[4]=translateObj.x;matrix2d[5]=translateObj.y;break}
17matrix='matrix('+matrix2d.join(', ')+')'}
18return matrix},_fetchProperties:function(){this._setParallaxProps();this.el.css($.avia_utilities.supported.transition+'transform','');this.winHeight=this.win.height();this.winWidth=this.win.width();if('background-image'==this.objectType){this.elProperty.top=this.elBackgroundParent.offset().top;this.elProperty.height=this.elBackgroundParent.outerHeight();this.el.height(Math.ceil((this.winHeight*Math.abs(this.speed))+this.elProperty.height))}else{this.elProperty.top=this.elInner.offset().top;this.elProperty.left=this.elInner.offset().left;this.elProperty.height=this.elInner.outerHeight();this.elProperty.width=this.elInner.outerWidth();this.elProperty.bottom=this.elProperty.top+this.elProperty.height;this.elProperty.right=this.elProperty.left+this.elProperty.width;this.elProperty.distanceLeft=this.elProperty.right;this.elProperty.distanceRight=this.winWidth-this.elProperty.left}
19this.elProperty.translateObj=this._getTranslateObject(this.el);this._parallaxScroll()},_onScroll:function(e){var _self=this;if(!_self.ticking){_self.ticking=!0;window.requestAnimationFrame(_self._parallaxRequest.bind(_self))}},_inViewport:function(elTop,elRight,elBottom,elLeft,winTop,winBottom,winLeft,winRight){return!(elTop>winBottom+10||elBottom<winTop-10||elLeft>winRight+10||elRight<winLeft-10)},_parallaxRequest:function(e){var _self=this;setTimeout(_self._parallaxScroll.bind(_self),0)},_parallaxScroll:function(e){if(('no_parallax'==this.direction||''==this.direction)&&!this.isTransformed){this.ticking=!1;return}
20var winTop=this.win.scrollTop(),winLeft=this.win.scrollLeft(),winRight=winLeft+this.winWidth,winBottom=winTop+this.winHeight,scrollPos=0,matrix='';if('background-image'==this.objectType){if(this.elProperty.top<winBottom&&winTop<=this.elProperty.top+this.elProperty.height){scrollPos=Math.ceil((winBottom-this.elProperty.top)*this.speed);matrix=this._getTranslateMatrix(this.elProperty.translateObj,{y:scrollPos});this.el.css($.avia_utilities.supported.transition+'transform',matrix)}
21this.ticking=!1;return}
22if(('no_parallax'==this.direction||''==this.direction)){matrix=this._getTranslateMatrix(this.elProperty.translateObj,{x:0,y:0});this.el.css($.avia_utilities.supported.transition+'transform',matrix);this.ticking=!1;this.isTransformed=!1;return}
23var scroll_px_toTop=Math.ceil(this.elProperty.top-winTop),scroll_px_el=Math.ceil(winBottom-this.elProperty.top),scrolled_pc_toTop=0,reduceDistanceX=0,transform={x:0,y:0};if(this.elProperty.top<this.winHeight){reduceDistanceX=Math.ceil(this.winHeight-this.elProperty.top)}
24if(this.elProperty.top>winBottom){scrolled_pc_toTop=0;scroll_px_el=0}else{scrolled_pc_toTop=1-(scroll_px_toTop+reduceDistanceX)/this.winHeight}
25switch(this.direction){case 'bottom_top':scrollPos=Math.ceil((scroll_px_el-reduceDistanceX)*this.speed);transform.y=-scrollPos;matrix=this._getTranslateMatrix(this.elProperty.translateObj,{y:-scrollPos});break;case 'left_right':scrollPos=Math.ceil(this.elProperty.distanceRight*scrolled_pc_toTop*this.speed);transform.x=scrollPos;

25matrix=this._getTranslateMatrix(this.elProperty.translateObj,{x:scrollPos});break;case 'right_left':scrollPos=Math.ceil(this.elProperty.distanceLeft*scrolled_pc_toTop*this.speed);transform.x=-scrollPos;matrix=this._getTranslateMatrix(this.elProperty.translateObj,{x:-scrollPos});break;default:break}
26var elInViewport=this._inViewport(this.elProperty.top,this.elProperty.right,this.elProperty.bottom,this.elProperty.left,winTop,winBottom,winLeft,winRight),transformedInViewport=this._inViewport(this.elProperty.top+transform.y,this.elProperty.right+transform.x,this.elProperty.bottom+transform.y,this.elProperty.left+transform.x,winTop,winBottom,winLeft,winRight);if(elInViewport||transformedInViewport){this.el.css($.avia_utilities.supported.transition+'transform',matrix)}
27this.ticking=!1;this.isTransformed=!0}};$.fn.avia_parallax=function(options){return this.each(function(){var obj=$(this);var self=obj.data('aviaParallax');if(!self){self=obj.data('aviaParallax',new AviaObjectParallaxElement(options,this))}})}})(jQuery)