/*!
 * Waterwheel Carousel
 * Version 2.3.0
 * http://www.bkosborne.com
 *
 * Copyright 2011-2013 Brian Osborne
 * Dual licensed under GPLv3 or MIT
 * Copies of the licenses have been distributed
 * with this plugin.
 *
 * Plugin written by Brian Osborne
 * for use with the jQuery JavaScript Framework
 * http://www.jquery.com
 */
;(function($){'use strict';$.fn.waterwheelCarousel=function(startingOptions){if(this.length>1){this.each(function(){$(this).waterwheelCarousel(startingOptions)});return this}
var carousel=this;var options={};var data={};function initializeCarouselData(){data={itemsContainer:$(carousel),totalItems:$(carousel).find('img').length,containerWidth:$(carousel).width(),containerHeight:$(carousel).height(),currentCenterItem:null,previousCenterItem:null,items:[],calculations:[],carouselRotationsLeft:0,currentlyMoving:!1,itemsAnimating:0,currentSpeed:options.speed,intervalTimer:null,currentDirection:'forward',leftItemsCount:0,rightItemsCount:0,performingSetup:!0};data.itemsContainer.find('img').removeClass(options.activeClassName)}
function autoPlay(stop){clearTimeout(data.autoPlayTimer);if(!stop&&options.autoPlay!==0){data.autoPlayTimer=setTimeout(function(){if(options.autoPlay>0){moveOnce('forward')}else{moveOnce('backward')}},Math.abs(options.autoPlay))}}
function preload(callback){if(options.preloadImages===!1){callback();return}
var $imageElements=data.itemsContainer.find('img'),loadedImages=0,totalImages=$imageElements.length;$imageElements.each(function(){$(this).bind('load',function(){loadedImages+=1;if(loadedImages===totalImages){callback();return}});$(this).attr('src',$(this).attr('src'));if(this.complete){$(this).trigger('load')}})}
function setOriginalItemDimensions(){data.itemsContainer.find('img').each(function(){if($(this).data('original_width')==undefined||options.forcedImageWidth>0){$(this).data('original_width',$(this).width())}
if($(this).data('original_height')==undefined||options.forcedImageHeight>0){$(this).data('original_height',$(this).height())}})}
function forceImageDimensionsIfEnabled(){if(options.forcedImageWidth&&options.forcedImageHeight){data.itemsContainer.find('img').each(function(){$(this).width(options.forcedImageWidth);$(this).height(options.forcedImageHeight)})}}
function preCalculatePositionProperties(){var $firstItem=data.itemsContainer.find('img:first');data.calculations[0]={distance:0,offset:0,opacity:1}
var horizonOffset=options.horizonOffset;var separation=options.separation;for(var i=1;i<=options.flankingItems+2;i++){if(i>1){horizonOffset*=options.horizonOffsetMultiplier;separation*=options.separationMultiplier}
data.calculations[i]={distance:data.calculations[i-1].distance+separation,offset:data.calculations[i-1].offset+horizonOffset,opacity:data.calculations[i-1].opacity*options.opacityMultiplier}}
if(options.edgeFadeEnabled){data.calculations[options.flankingItems+1].opacity=0}else{data.calculations[options.flankingItems+1]={distance:0,offset:0,opacity:0}}}
function setupCarousel(){data.items=data.itemsContainer.find('img');for(var i=0;i<data.totalItems;i++){data.items[i]=$(data.items[i])}
if(options.horizon===0){if(options.orientation==='horizontal'){options.horizon=data.containerHeight/2}else{options.horizon=data.containerWidth/2}}
data.itemsContainer.css('position','relative').find('img').each(function(){var centerPosLeft,centerPosTop;if(options.orientation==='horizontal'){centerPosLeft=(data.containerWidth/2)-($(this).data('original_width')/2);centerPosTop=options.horizon-($(this).data('original_height')/2)}else{centerPosLeft=options.horizon-($(this).data('original_width')/2);centerPosTop=(data.containerHeight/2)-($(this).data('original_height')/2)}
$(this).css({'left':centerPosLeft,'top':centerPosTop,'visibility':'visible','position':'absolute','z-index':0,'opacity':0}).data({top:centerPosTop,left:centerPosLeft,oldPosition:0,currentPosition:0,depth:0,opacity:0}).show()})}
function setupStarterRotation(){options.startingItem=(options.startingItem===0)?Math.round(data.totalItems/2):options.startingItem;data.rightItemsCount=Math.ceil((data.totalItems-1)/2);data.leftItemsCount=Math.floor((data.totalItems-1)/2);data.carouselRotationsLeft=1;moveItem(data.items[options.startingItem-1],0);data.items[options.startingItem-1].css('opacity',1);var itemIndex=options.startingItem-1;for(var pos=1;pos<=data.rightItemsCount;pos++){(itemIndex<data.totalItems-1)?itemIndex+=1:itemIndex=0;data.items[itemIndex].css('opacity',1);moveItem(data.items[itemIndex],pos)}
var itemIndex=options.startingItem-1;for(var pos=-1;pos>=data.leftItemsCount*-1;pos--){(itemIndex>0)?itemIndex-=1:itemIndex=data.totalItems-1;data.items[itemIndex].css('opacity',1);moveItem(data.items[itemIndex],pos)}}
function performCalculations($item,newPosition){var newDistanceFromCenter=Math.abs(newPosition);if(newDistanceFromCenter<options.flankingItems+1){var calculations=data.calculations[newDistanceFromCenter]}else{var calculations=data.calculations[options.flankingItems+1]}
var distanceFactor=Math.pow(options.sizeMultiplier,newDistanceFromCenter)
var newWidth=distanceFactor*$item.data('original_width');var newHeight=distanceFactor*$item.data('original_height');var widthDifference=Math.abs($item.width()-newWidth);var heightDifference=Math.abs($item.height()-newHeight);var newOffset=calculations.offset
var newDistance=calculations.distance;if(newPosition<0){newDistance*=-1}
if(options.orientation=='horizontal'){var center=data.containerWidth/2;var newLeft=center+newDistance-(newWidth/2);var newTop=options.horizon-newOffset-(newHeight/2)}else{var center=data.containerHeight/2;var newLeft=options.horizon-newOffset-(newWidth/2);var newTop=center+newDistance-(newHeight/2)}
var newOpacity;if(newPosition===0){newOpacity=1}else{newOpacity=calculations.opacity}
var newDepth=options.flankingItems+2-newDistanceFromCenter;$item.data('width',newWidth);$item.data('height',newHeight);$item.data('top',newTop);$item.data('left',newLeft);$item.data('oldPosition',$item.data('currentPosition'));$item.data('depth',newDepth);$item.data('opacity',newOpacity)}
function moveItem($item,newPosition){if(Math.abs(newPosition)<=options.flankingItems+1){performCalculations($item,newPosition);data.itemsAnimating++;$item.css('z-index',$item.data().depth).animate({left:$item.data().left,width:$item.data().width,height:$item.data().height,top:$item.data().top,opacity:$item.data().opacity},data.currentSpeed,options.animationEasing,function(){itemAnimationComplete($item,newPosition)})}else{$item.data('currentPosition',newPosition)
if($item.data('oldPosition')===0){$item.css({'left':$item.data().left,'width':$item.data().width,'height':$item.data().height,'top':$item.data().top,'opacity':$item.data().opacity,'z-index':$item.data().depth})}}}
function itemAnimationComplete($item,newPosition){data.itemsAnimating--;$item.data('currentPosition',newPosition);if(newPosition===0){data.currentCenterItem=$item}
if(data.itemsAnimating===0){data.carouselRotationsLeft-=1;data.currentlyMoving=!1;if(data.carouselRotationsLeft>0){rotateCarousel(0)}else{data.currentSpeed=options.speed;data.currentCenterItem.addClass(options.activeClassName);if(data.performingSetup===!1){options.movedToCenter(data.currentCenterItem);options.movedFromCenter(data.previousCenterItem)}
data.performingSetup=!1;autoPlay()}}}
function rotateCarousel(rotations){if(data.currentlyMoving===!1){data.currentCenterItem.removeClass(options.activeClassName);data.currentlyMoving=!0;data.itemsAnimating=0;data.carouselRotationsLeft+=rotations;if(options.quickerForFurther===!0){if(rotations>1){data.currentSpeed=options.speed/rotations}
data.currentSpeed=(data.currentSpeed<100)?100:data.currentSpeed}
for(var i=0;i<data.totalItems;i++){var $item=$(data.items[i]);var currentPosition=$item.data('currentPosition');var newPosition;if(data.currentDirection=='forward'){newPosition=currentPosition-1}else{newPosition=currentPosition+1}
var flankingAllowance=(newPosition>0)?data.rightItemsCount:data.leftItemsCount;if(Math.abs(newPosition)>flankingAllowance){newPosition=currentPosition*-1;if(data.totalItems%2==0){newPosition+=1}}
moveItem($item,newPosition)}}}
$(this).find('img').bind("click",function(){var itemPosition=$(this).data().currentPosition;if(options.imageNav==!1){return}
if(Math.abs(itemPosition)>=options.flankingItems+1){return}
if(data.currentlyMoving){return}
data.previousCenterItem=data.currentCenterItem;autoPlay(!0);options.autoPlay=0;var rotations=Math.abs(itemPosition);if(itemPosition==0){options.clickedCenter($(this))}else{options.movingFromCenter(data.currentCenterItem);options.movingToCenter($(this));if(itemPosition<0){data.currentDirection='backward';rotateCarousel(rotations)}else if(itemPosition>0){data.currentDirection='forward';rotateCarousel(rotations)}}});$(this).find('a').bind("click",function(event){var isCenter=$(this).find('img').data('currentPosition')==0;if(options.linkHandling===1||(options.linkHandling===2&&!isCenter)){event.preventDefault();return!1}});function nextItemFromCenter(){var $next=data.currentCenterItem.next();if($next.length<=0){$next=data.currentCenterItem.parent().children().first()}
return $next}
function prevItemFromCenter(){var $prev=data.currentCenterItem.prev();if($prev.length<=0){$prev=data.currentCenterItem.parent().children().last()}
return $prev}
function moveOnce(direction){if(data.currentlyMoving===!1){data.previousCenterItem=data.currentCenterItem;options.movingFromCenter(data.currentCenterItem);if(direction=='backward'){options.movingToCenter(prevItemFromCenter());data.currentDirection='backward'}else if(direction=='forward'){options.movingToCenter(nextItemFromCenter());data.currentDirection='forward'}}
rotateCarousel(1)}
$(document).keydown(function(e){if(options.keyboardNav){if((e.which===37&&options.orientation=='horizontal')||(e.which===38&&options.orientation=='vertical')){autoPlay(!0);options.autoPlay=0;moveOnce('backward')}else if((e.which===39&&options.orientation=='horizontal')||(e.which===40&&options.orientation=='vertical')){autoPlay(!0);options.autoPlay=0;moveOnce('forward')}
if(options.keyboardNavOverride&&((options.orientation=='horizontal'&&(e.which===37||e.which===39))||(options.orientation=='vertical'&&(e.which===38||e.which===40)))){e.preventDefault();return!1}}});this.reload=function(newOptions){if(typeof newOptions==="object"){var combineDefaultWith=newOptions}else{var combineDefaultWith={}}
options=$.extend({},$.fn.waterwheelCarousel.defaults,newOptions);initializeCarouselData();data.itemsContainer.find('img').hide();forceImageDimensionsIfEnabled();preload(function(){setOriginalItemDimensions();preCalculatePositionProperties();setupCarousel();setupStarterRotation()})}
this.next=function(){autoPlay(!0);options.autoPlay=0;moveOnce('forward')}
this.prev=function(){autoPlay(!0);options.autoPlay=0;moveOnce('backward')}
this.reload(startingOptions);return this};$.fn.waterwheelCarousel.defaults={startingItem:1,separation:175,separationMultiplier:0.6,horizonOffset:0,horizonOffsetMultiplier:1,sizeMultiplier:0.7,opacityMultiplier:0.8,horizon:0,flankingItems:3,speed:300,animationEasing:'linear',quickerForFurther:!0,edgeFadeEnabled:!1,linkHandling:2,autoPlay:0,orientation:'horizontal',activeClassName:'carousel-center',keyboardNav:!1,keyboardNavOverride:!0,imageNav:!0,preloadImages:!0,forcedImageWidth:0,forcedImageHeight:0,movingToCenter:$.noop,movedToCenter:$.noop,clickedCenter:$.noop,movingFromCenter:$.noop,movedFromCenter:$.noop}})(jQuery)