https://www.viaggiandoatestaalta.it/wp-content/cache/min/1/wp-cont…/js/plugins/curtain.js?ver=1790899260

1(function($,window,document,undefined){var pluginName='curtain',defaults={scrollSpeed:400,bodyHeight:0,linksArray:[],mobile:!1,scrollButtons:{},controls:null,curtainLinks:'.curtain-links',enableKeys:!0,easing:'swing',disabled:!1,nextSlide:function(){},prevSlide:function(){}};function Plugin(element,options){var self=this;this.element=element;this.options=$.extend({},defaults,options);this._defaults=defaults;this._name=pluginName;this._ignoreHashChange=!1;this.init()}
2Plugin.prototype={init:function(){var self=this;this.$element=$(this.element);this.$li=$(this.element).find('>li');this.$liLength=this.$li.length;self.$windowHeight=$(window).height();self.$elDatas={};self.$document=$(document);self.$window=$(window);self.webkit=(navigator.userAgent.indexOf('Chrome')>-1||navigator.userAgent.indexOf("Safari")>-1);$.msie=/msie/.test(navigator.userAgent.toLowerCase());$.mozilla=/firefox/.test(navigator.userAgent.toLowerCase());$.Android=(navigator.userAgent.match(/Android/i));$.iPhone=((navigator.userAgent.match(/iPhone/i))||(navigator.userAgent.match(/iPod/i)));$.iPad=((navigator.userAgent.match(/iPad/i)));$.iOs4=(/OS [1-4]_[0-9_]+ like Mac OS X/i.test(navigator.userAgent));if(this.options.mobile){this.scrollEl=this.$element}else if($.mozilla||$.msie){this.scrollEl=$('html')}else{this.scrollEl=$('body')}
3if(self.options.controls){self.options.scrollButtons.up=$(self.options.controls).find('[href="#up"]');self.options.scrollButtons.down=$(self.options.controls).find('[href="#down"]');if(!$.iOs4&&($.iPhone||$.iPad)){self.$element.css({position:'fixed',top:0,left:0,right:0,bottom:0,'-webkit-overflow-scrolling':'touch',overflow:'auto'});$(self.options.controls).css({position:'absolute'})}}
4var callbackImageLoaded=function(){self.setDimensions();self.$li.eq(0).addClass('current');self.setCache();if(!self.options.mobile){if(self.$li.eq(1).length)
5self.$li.eq(1).nextAll().addClass('hidden')}
6self.setEvents();self.setLinks();self.isHashIsOnList(location.hash.substring(1))};if(self.$element.find('img').length)
7self.imageLoaded(callbackImageLoaded);else callbackImageLoaded()},scrollToPosition:function(direction){var position=null,self=this;if(self.scrollEl.is(':animated')){return!1}
8if(direction==='up'||direction==='down'){var $next=(direction==='up')?self.$current.prev():self.$current.next();if(self.$step){if(!self.$current.find('.current-step').length){self.$step.eq(0).addClass('current-step')}
9var $nextStep=(direction==='up')?self.$current.find('.current-step').prev('.step'):self.$current.find('.current-step').next('.step');if($nextStep.length){position=(self.options.mobile)?$nextStep.position().top+self.$elDatas[self.$current.index()]['data-position']:$nextStep.position().top+self.$elDatas[self.$current.index()]['data-position']}}
10position=position||((self.$elDatas[$next.index()]===undefined)?null:self.$elDatas[$next.index()]['data-position']);if(position!==null){self.scrollEl.animate({scrollTop:position},self.options.scrollSpeed,self.options.easing)}}else if(direction==='top'){self.scrollEl.animate({scrollTop:0},self.options.scrollSpeed,self.options.easing)}else if(direction==='bottom'){self.scrollEl.animate({scrollTop:self.options.bodyHeight},self.options.scrollSpeed,self.options.easing)}else{var index=$("#"+direction).index(),speed=Math.abs(self.currentIndex-index)*(this.options.scrollSpeed*4)/self.$liLength;self.scrollEl.animate({scrollTop:self.$elDatas[index]['data-position']||null},(speed<=self.options.scrollSpeed)?self.options.scrollSpeed:speed,this.options.easing)}},scrollEvent:function(){var self=this,docTop=self.$document.scrollTop();if(docTop<self.currentP&&self.currentIndex>0){self._ignoreHashChange=!0;if(self.$current.prev().attr('id'))
11self.setHash(self.$current.prev().attr('id'));self.$current.removeClass('current').css((self.webkit)?{'-webkit-transform':'translateY(0px) translateZ(0)'}:{marginTop:0}).nextAll().addClass('hidden').end().prev().addClass('current').removeClass('hidden');self.setCache();self.options.prevSlide()}else if(docTop<(self.currentP+self.currentHeight)){if(self.webkit)
12self.$current.css({'-webkit-transform':'translateY('+(-(docTop-self.currentP))+'px) translateZ(0)'});else self.$current.css({marginTop:-(docTop-self.currentP)});if(self.$fixedLength){var dataTop=parseInt(self.$fixed.attr('data-top'),10);if(docTop+self.$windowHeight>

12=self.currentP+self.currentHeight){self.$fixed.css({position:'fixed'})}else{self.$fixed.css({position:'absolute',marginTop:Math.abs(docTop-self.currentP)})}}
13if(self.$stepLength){$.each(self.$step,function(i,el){if(($(el).position().top+self.currentP)<=docTop+5&&$(el).position().top+self.currentP+$(el).height()>=docTop+5){if(!$(el).hasClass('current-step')){self.$step.removeClass('current-step');$(el).addClass('current-step');return!1}}})}
14if(self.parallaxBg){var tr=docTop*-0.07;self.parallaxBg.css({'-webkit-transform':'translate3d(0,'+tr+'px,0)','-moz-transform':'translate3d(0,'+tr+'px,0)','transform':'translate3d(0,'+tr+'px,0)'})}
15if(self.$fade.length){self.$fade.css({'z-index':self.z-1,'opacity':Math.abs(1-((docTop-self.currentP)/self.$windowHeight))})}
16if(self.$slowScroll.length){self.$slowScroll.css({'margin-top':(docTop/self.$slowScroll.attr('data-slow-scroll'))})}}else{self._ignoreHashChange=!0;if(self.$current.next().attr('id'))
17self.setHash(self.$current.next().attr('id'));self.$current.removeClass('current').addClass('hidden').next('li').addClass('current').next('li').removeClass('hidden');self.setCache();self.options.nextSlide()}},scrollMobileEvent:function(){var self=this,docTop=self.$element.scrollTop();if(docTop+10<self.currentP&&self.currentIndex>0){self._ignoreHashChange=!0;if(self.$current.prev().attr('id'))
18self.setHash(self.$current.prev().attr('id'));self.$current.removeClass('current').prev().addClass('current');self.setCache();self.options.prevSlide()}else if(docTop+10<(self.currentP+self.currentHeight)){if(self.$stepLength){$.each(self.$step,function(i,el){if(($(el).position().top+self.currentP)<=docTop&&(($(el).position().top+self.currentP)+$(el).outerHeight())>=docTop){if(!$(el).hasClass('current-step')){self.$step.removeClass('current-step');$(el).addClass('current-step')}}})}}else{self._ignoreHashChange=!0;if(self.$current.next().attr('id'))
19self.setHash(self.$current.next().attr('id'));self.$current.removeClass('current').next().addClass('current');self.setCache();self.options.nextSlide()}},setDimensions:function(){var self=this,levelHeight=0,cover=!1,height=null;self.$windowHeight=self.$window.height();this.$li.each(function(index){var $self=$(this);cover=$self.hasClass('cover');if(cover){$self.css({height:self.$windowHeight,zIndex:20-index}).attr('data-height',self.$windowHeight).attr('data-position',levelHeight);self.$elDatas[$self.index()]={'data-height':parseInt(self.$windowHeight,10),'data-position':parseInt(levelHeight,10)};levelHeight+=self.$windowHeight}else{height=($self.outerHeight()<=self.$windowHeight)?self.$windowHeight:$self.outerHeight();$self.css({minHeight:height,zIndex:20-index}).attr('data-height',height).attr('data-position',levelHeight);self.$elDatas[$self.index()]={'data-height':parseInt(height,10),'data-position':parseInt(levelHeight,10)};levelHeight+=height}
20if($self.find('.fixed').length){var top=$self.find('.fixed').css('top');$self.find('.fixed').attr('data-top',top)}});if(!this.options.mobile)
21this.setBodyHeight()},setEvents:function(){var self=this;$(window).on('resize',function(){self.setDimensions()});if(self.options.mobile){self.$element.on('scroll',function(){self.scrollMobileEvent()})}else{self.$window.on('scroll',function(){self.scrollEvent()})}
22if(self.options.enableKeys){self.$document.on('keydown',function(e){if(e.keyCode===38||e.keyCode===37){self.scrollToPosition('up');e.preventDefault();return!1}
23if(e.keyCode===40||e.keyCode===39){self.scrollToPosition('down');e.preventDefault();return!1}
24if(e.keyCode===36){self.scrollToPosition('top');e.preventDefault();return!1}
25if(e.keyCode===35){self.scrollToPosition('bottom');e.preventDefault();return!1}})}
26if(self.options.scrollButtons){if(self.options.scrollButtons.up){self.options.scrollButtons.up.on('click',function(e){e.preventDefault();self.scrollToPosition('up')})}
27if(self.options.scrollButtons.down){self.options.scrollButtons.down.on('click',function(e){e.preventDefault();self.scrollToPosition('down')})}}
28if(self.options.curtainLinks){$(self.options.curtainLinks).on('click',function(e){e.preventDefault();var href=$(this).attr('href');if(!self.isHashIsOnList(href.substring(1))&&position)
29return!1;var position=self.$elDatas[$(href).index()]['data-position']||null;if(position){self.scrollEl.animate({scrollTop:position},self.options.scrollSpeed,self.options.easing)}
30return!1})}
31self.$window.on("hashchange",function(event){if(self._ignoreHashChange===!1){self.isHashIsOnList(location.hash.substring(1))}
32self._ignoreHashChange=!1})},setBodyHeight:function(){var h=0;for(var key in this.$elDatas){var obj=this.$elDatas[key];h+=obj['data-height']}
33this.options.bodyHeight=h;$('body').height(h)}

33,setLinks:function(){var self=this;this.$li.each(function(){var id=$(this).attr('id')||0;self.options.linksArray.push(id)})},setHash:function(hash){el=$('[href=#'+hash+']');el.parent().siblings('li').removeClass('active');el.parent().addClass('active');if(history.pushState){history.pushState(null,null,'#'+hash)}else{location.hash=hash}},setCache:function(){var self=this;var imageHolderClassName=self.$element.data('image-holder-name');var fadeElementClassName=self.$element.data('fade-element-name');self.$current=self.$element.find('.current');self.$fixed=self.$current.find('.fixed');self.$fixedLength=self.$fixed.length;self.$step=self.$current.find('.step');self.$stepLength=self.$step.length;self.currentIndex=self.$current.index();self.currentP=self.$elDatas[self.currentIndex]['data-position'];self.currentHeight=self.$elDatas[self.currentIndex]['data-height'];self.z=self.$element.find('.current').css('z-index');self.parallaxBg=self.$current.find(imageHolderClassName);self.$fade=$(fadeElementClassName);self.$slowScroll=self.$current.find('[data-slow-scroll]')},isHashIsOnList:function(hash){var self=this;$.each(self.options.linksArray,function(i,val){if(val===hash){self.scrollToPosition(hash);return!1}})},readyElement:function(el,callback){var interval=setInterval(function(){if(el.length){callback(el.length);clearInterval(interval)}},60)},imageLoaded:function(callback){var self=this,elems=self.$element.find('img'),len=elems.length,blank="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==";elems.bind('load.imgloaded',function(){if(--len<=0&&this.src!==blank||$(this).not(':visible')){elems.unbind('load.imgloaded');callback.call(elems,this)}}).each(function(){if(this.complete||this.complete===undefined){var src=this.src;this.src=blank;this.src=src}})}};$.fn[pluginName]=function(options){return this.each(function(){if(!$.data(this,'plugin_'+pluginName)){$.data(this,'plugin_'+pluginName,new Plugin(this,options))}})}})(jQuery,window,document)