幻灯片jQuery插件

Posted 2021-02-25

/*
* Slides, A Slideshow Plugin for jQuery
* Intructions: http://slidesjs.com
* By: Nathan Searles, http://nathansearles.com
* Version: 1.0.9
* Updated: January 4th, 2011
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
 
(function($){$.fn.slides=function(option){option=$.extend({},$.fn.slides.option,option);return this.each(function(){$('.'+option.container,$(this)).children().wrapAll('<div class="slides_control"/>');var elem=$(this),control=$('.slides_control',elem),total=control.children().size(),width=control.children().outerWidth(),height=control.children().outerHeight(),start=option.start-1,effect=option.effect.indexOf(',')<0?option.effect:option.effect.replace(' ','').split(',')[0],paginationEffect=option.effect.indexOf(',')<0?effect:option.effect.replace(' ','').split(',')[1],next=0,prev=0,number=0,current=0,loaded,active,clicked,position,direction;if(total<2){return;}
if(start<0){start=0;};if(start>total){start=total-1;};if(option.start){current=start;};if(option.randomize){control.randomize();}
$('.'+option.container,elem).css({overflow:'hidden',position:'relative'});control.css({position:'relative',width:(width*3),height:height,left:-width});control.children().css({position:'absolute',top:0,left:width,zIndex:0,display:'none'});if(option.autoHeight){control.animate({height:control.children(':eq('+start+')').outerHeight()},option.autoHeightSpeed);}
if(option.preload&&control.children()[0].tagName=='IMG'){elem.css({background:'url('+option.preloadImage+') no-repeat 50% 50%'});var img=$('img:eq('+start+')',elem).attr('src')+'?'+(new Date()).getTime();$('img:eq('+start+')',elem).attr('src',img).load(function(){$(this).fadeIn(option.fadeSpeed,function(){$(this).css({zIndex:5});elem.css({background:''});loaded=true;});});}else{control.children(':eq('+start+')').fadeIn(option.fadeSpeed,function(){loaded=true;});}
if(option.bigTarget){control.children().css({cursor:'pointer'});control.children().click(function(){animate('next',effect);return false;});}
if(option.hoverPause&&option.play){control.children().bind('mouseover',function(){stop();});control.children().bind('mouseleave',function(){pause();});}
if(option.generateNextPrev){$('.'+option.container,elem).after('<a href="#" class="'+option.prev+'">Prev</a>');$('.'+option.prev,elem).after('<a href="#" class="'+option.next+'">Next</a>');}
$('.'+option.next,elem).click(function(e){e.preventDefault();if(option.play){pause();};animate('next',effect);});$('.'+option.prev,elem).click(function(e){e.preventDefault();if(option.play){pause();};animate('prev',effect);});if(option.generatePagination){elem.append('<ul class='+option.paginationClass+'></ul>');control.children().each(function(){$('.'+option.paginationClass,elem).append('<li><a href="#'+number+'">'+(number+1)+'</a></li>');number++;});}else{$('.'+option.paginationClass+' li a',elem).each(function(){$(this).attr('href','#'+number);number++;});}
$('.'+option.paginationClass+' li:eq('+start+')',elem).addClass('current');$('.'+option.paginationClass+' li a',elem).click(function(){if(option.play){pause();};clicked=$(this).attr('href').match('[^#/]+$');if(current!=clicked){animate('pagination',paginationEffect,clicked);}
return false;});$('a.link',elem).click(function(){if(option.play){pause();};clicked=$(this).attr('href').match('[^#/]+$')-1;if(current!=clicked){animate('pagination',paginationEffect,clicked);}
return false;});if(option.play){playInterval=setInterval(function(){animate('next',effect);},option.play);elem.data('interval',playInterval);};function stop(){clearInterval(elem.data('interval'));};function pause(){if(option.pause){clearTimeout(elem.data('pause'));clearInterval(elem.data('interval'));pauseTimeout=setTimeout(function(){clearTimeout(elem.data('pause'));playInterval=setInterval(function(){animate("next",effect);},option.play);elem.data('interval',playInterval);},option.pause);elem.data('pause',pauseTimeout);}else{stop();}};function animate(direction,effect,clicked){if(!active&&loaded){active=true;switch(direction){case'next':prev=current;next=current+1;next=total===next?0:next;position=width*2;direction=-width*2;current=next;break;case'prev':prev=current;next=current-1;next=next===-1?total-1:next;position=0;direction=0;current=next;break;case'pagination':next=parseInt(clicked,10);prev=$('.'+option.paginationClass+' li.current a',elem).attr('href').match('[^#/]+$');if(next>prev){position=width*2;direction=-width*2;}else{position=0;direction=0;}
current=next;break;}
if(effect==='fade'){option.animationStart();if(option.crossfade){control.children(':eq('+next+')',elem).css({zIndex:10}).fadeIn(option.fadeSpeed,function(){if(option.autoHeight){control.animate({height:control.children(':eq('+next+')',elem).outerHeight()},option.autoHeightSpeed,function(){control.children(':eq('+prev+')',elem).css({display:'none',zIndex:0});control.children(':eq('+next+')',elem).css({zIndex:0});option.animationComplete(next+1);active=false;});}else{control.children(':eq('+prev+')',elem).css({display:'none',zIndex:0});control.children(':eq('+next+')',elem).css({zIndex:0});option.animationComplete(next+1);active=false;}});}else{option.animationStart();control.children(':eq('+prev+')',elem).fadeOut(option.fadeSpeed,function(){if(option.autoHeight){control.animate({height:control.children(':eq('+next+')',elem).outerHeight()},option.autoHeightSpeed,function(){control.children(':eq('+next+')',elem).fadeIn(option.fadeSpeed);});}else{control.children(':eq('+next+')',elem).fadeIn(option.fadeSpeed,function(){if($.browser.msie){$(this).get(0).style.removeAttribute('filter');}});}
option.animationComplete(next+1);active=false;});}}else{control.children(':eq('+next+')').css({left:position,display:'block'});if(option.autoHeight){option.animationStart();control.animate({left:direction,height:control.children(':eq('+next+')').outerHeight()},option.slideSpeed,function(){control.css({left:-width});control.children(':eq('+next+')').css({left:width,zIndex:5});control.children(':eq('+prev+')').css({left:width,display:'none',zIndex:0});option.animationComplete(next+1);active=false;});}else{option.animationStart();control.animate({left:direction},option.slideSpeed,function(){control.css({left:-width});control.children(':eq('+next+')').css({left:width,zIndex:5});control.children(':eq('+prev+')').css({left:width,display:'none',zIndex:0});option.animationComplete(next+1);active=false;});}}
if(option.pagination){$('.'+option.paginationClass+' li.current',elem).removeClass('current');$('.'+option.paginationClass+' li:eq('+next+')',elem).addClass('current');}}};});};$.fn.slides.option={preload:false,preloadImage:'/img/loading.gif',container:'slides_container',generateNextPrev:false,next:'next',prev:'prev',pagination:true,generatePagination:true,paginationClass:'pagination',fadeSpeed:350,slideSpeed:350,start:1,effect:'slide',crossfade:false,randomize:false,play:0,pause:0,hoverPause:false,autoHeight:false,autoHeightSpeed:350,bigTarget:false,animationStart:function(){},animationComplete:function(){}};$.fn.randomize=function(callback){function randomizeOrder(){return(Math.round(Math.random())-0.5);}
return($(this).each(function(){var $this=$(this);var $children=$this.children();var childCount=$children.length;if(childCount>1){$children.hide();var indices=[];for(i=0;i<childCount;i++){indices[indices.length]=i;}
indices=indices.sort(randomizeOrder);$.each(indices,function(j,k){var $child=$children.eq(k);var $clone=$child.clone(true);$clone.show().appendTo($this);if(callback!==undefined){callback($child,$clone);}
$child.remove();});}}));};})(jQuery);