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Filename : fancyMorph.js
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$.fn.fancyMorph=function(opts){var Morphing=function($btn,opts){var self=this;self.opts=$.extend({animationEffect:false,infobar:false,buttons:['close'],smallBtn:false,touch:false,baseClass:'fancybox-morphing',afterClose:function(){self.close();}},opts);self.init($btn);};Morphing.prototype.init=function($btn){var self=this;self.$btn=$btn.addClass('morphing-btn');self.$clone=$('<div class="morphing-btn-clone" />').hide().insertAfter($btn);$btn.wrap('<span class="morphing-btn-wrap"></span>').on('click',function(e){e.preventDefault();self.start();});};Morphing.prototype.start=function(){var self=this;if(self.$btn.hasClass('morphing-btn_circle')){return;}
self.$btn.width(self.$btn.width()).parent().width(self.$btn.outerWidth());self.$btn.off('.fm').on("transitionend.fm webkitTransitionEnd.fm oTransitionEnd.fm MSTransitionEnd.fm",function(e){if(e.originalEvent.propertyName==='width'){self.$btn.off('.fm');self.animateBg();}}).addClass('morphing-btn_circle');};Morphing.prototype.animateBg=function(){var self=this;self.scaleBg();self.$clone.show();self.$clone[0].offsetHeight;self.$clone.off('.fm').on("transitionend.fm webkitTransitionEnd.fm oTransitionEnd.fm MSTransitionEnd.fm",function(e){self.$clone.off('.fm');self.complete();}).addClass('morphing-btn-clone_visible');};Morphing.prototype.scaleBg=function(){var self=this;var $clone=self.$clone;var scale=self.getScale();var $btn=self.$btn;var pos=$btn.offset();$clone.css({top:pos.top+$btn.outerHeight()*0.5-($btn.outerHeight()*scale*0.5)-$(window).scrollTop(),left:pos.left+$btn.outerWidth()*0.5-($btn.outerWidth()*scale*0.5)-$(window).scrollLeft(),width:$btn.outerWidth()*scale,height:$btn.outerHeight()*scale,transform:'scale('+(1/scale)+')'});};Morphing.prototype.getScale=function(){var $btn=this.$btn,radius=$btn.outerWidth()*0.5,left=$btn.offset().left+radius-$(window).scrollLeft(),top=$btn.offset().top+radius-$(window).scrollTop(),windowW=$(window).width(),windowH=$(window).height();var maxDistHor=(left>windowW/2)?left:(windowW-left),maxDistVert=(top>windowH/2)?top:(windowH-top);return Math.ceil(Math.sqrt(Math.pow(maxDistHor,2)+Math.pow(maxDistVert,2))/radius);};Morphing.prototype.complete=function(){var self=this;var $btn=self.$btn;$.fancybox.open({src:$btn.data('src')||$btn.attr('href')},self.opts);$(window).on('resize.fm',function(){});};Morphing.prototype.close=function(){var self=this;var $clone=self.$clone;self.scaleBg();$clone.one('transitionend webkitTransitionEnd oTransitionEnd MSTransitionEnd',function(e){$clone.hide();self.$btn.removeClass('morphing-btn_circle');});$clone.removeClass('morphing-btn-clone_visible');$(window).off('resize.fm');};this.each(function(){var $this=$(this);if(!$this.data("morphing")){$this.data("morphing",new Morphing($this,opts));}});return this;};