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jQuery仿3D旋转木马效果插件(带索引按钮)

2016-12-12 11:12 323 查看
项目中需要用到旋转木马效果,但是我在网上找的插件,基本都是不带按钮或者只是带前后按钮的,而项目要求的是带索引按钮,也就是说有3张图片轮播,对应的要有3个小按钮,点击按钮,对应的图片位于中间位置。于是就在jQuery的一款插件jquery.carousel.js的基础上进行了一些改进,不足的是,固定就是3张图片。

代码:

html

<!doctype html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>jQuery自动轮播旋转木马插件</title>
<link type="text/css" rel="stylesheet" href="css/carousel.css">
<style type="text/css">
.caroursel{margin:150px auto;}
/*body{background-color: #2A2A2A;}*/
</style>
<!--[if IE]>
<script src="http://libs.baidu.com/html5shiv/3.7/html5shiv.min.js"></script>
<![endif]-->
</head>
<body>
<article class="jq22-container">

<div class = "caroursel poster-main" data-setting = '{
"width":1000,
"height":270,
"posterWidth":640,
"posterHeight":270,
"scale":0.8,
"dealy":"2000",
"algin":"middle"
}'>
<ul class = "poster-list">
<li class = "poster-item"><img src="image/a1.png" width = "100%" height="100%"></li>
<li class = "poster-item"><img src="image/a2.png" width = "100%" height="100%"></li>
<li class = "poster-item"><img src="image/a3.png" width = "100%" height="100%"></li>
</ul>

<div class = "poster-btn poster-first-btn"></div>
<div class = "poster-btn poster-second-btn"></div>
<div class = "poster-btn poster-third-btn"></div>

<div class = "poster-btn poster-prev-btn"> < </div>
<div class = "poster-btn poster-next-btn"> > </div>

</div>

</article>

<script src="http://www.jq22.com/jquery/1.11.1/jquery.min.js"></script>
<script src="js/jquery.carousel-1.js"></script>
<script>
Caroursel.init($('.caroursel'))
</script>
</body>
</html>


css

body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,textarea,p,blockquote,th,td{margin:0;padding:0;}
table{border-collapse:collapse;border-spacing:0;}
fieldset,img{border:0;}
address,caption,cite,code,dfn,em,strong,th,var{font-style:normal;font-weight:normal;}
ol,ul{list-style:none;}
caption,th{text-align:left;}
h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal;}
q:before,q:after{content: ;}
abbr,acronym{border:0;}
body{color:#666; background-color:#fff;}
.clearfix:after {visibility:hidden;display:block;font-size:0;content:" ";clear:both;height:0;}
.clearfix {zoom:1;}

.poster-main{position: relative;width: 900px;height: 270px}
.poster-main a,.poster-main img{display:block;}
.poster-main .poster-list{width: 900px;height: 270px}
.poster-main .poster-list .poster-item{position: absolute;left: 0px;top: 0px}

.poster-main .poster-btn{
cursor: pointer;
position: absolute;
top:290px;
width:14px !important;
height:14px !important;
text-align: center;
line-height: 14px;
color: #ffffff;
-webkit-border-radius: 50%;
-moz-border-radius: 50%;
border-radius: 50%;
background-color: #808080;
z-index: 10;
}
.poster-main .poster-prev-btn{
left: 40%;
}
.poster-main .poster-next-btn{
left: 56%;
}

.poster-main .poster-first-btn{
left: 45%;
}
.poster-main .poster-second-btn{
left: 48%;
}
.poster-main .poster-third-btn{
left: 51%;
}
.poster-main .poster-btn-active{
background-color: #000000;
}


JS:

;(function($){
var Caroursel = function (caroursel){
var self = this;
this.caroursel = caroursel;
this.posterList = caroursel.find(".poster-list");
this.posterItems = caroursel.find(".poster-item");
this.firstPosterItem = this.posterItems.first();
this.lastPosterItem = this.posterItems.last();
this.prevBtn = this.caroursel.find(".poster-prev-btn");
this.nextBtn = this.caroursel.find(".poster-next-btn");

this.firstBtn = this.caroursel.find(".poster-first-btn");
this.secondBtn = this.caroursel.find(".poster-second-btn");
this.thirdBtn = this.caroursel.find(".poster-third-btn");
this.buttonItems = [this.firstBtn,this.secondBtn,this.thirdBtn];

//每个移动元素的位置索引,用于记录每个元素当前的位置,在每次移动的时候,该数组的值都会发生变化
//值为1 表示在中间 2:在zuo边 3:在you边
//数组的下标对应li元素的位置索引
this.curPositions = [1,2,3];

this.setting = {
"width":"900",
"height":"300",
"posterWidth":"300",
"posterHeight":"200",
"scale":"0.8",
"speed":"1000",
"isAutoplay":"true",
"dealy":"1000"
};

$.extend(this.setting,this.getSetting());

this.setFirstPosition();

this.setSlicePosition();

this.refreshCss();

this.rotateFlag = true;
this.prevBtn.bind("click",function(){
if(self.rotateFlag){
self.rotateFlag = false;
self.rotateAnimate("left")
}
});

//绑定位置按钮事件
this.firstBtn.bind("click",function(){
console.log(this);
self.clickPosButtonIndex(0);
});
this.secondBtn.bind("click",function(){
self.clickPosButtonIndex(1);
});
this.thirdBtn.bind("click",function(){
self.clickPosButtonIndex(2);
});

this.nextBtn.bind("click",function(){
if(self.rotateFlag){
self.rotateFlag = false;
self.rotateAnimate("right")
}
});
if(this.setting.isAutoplay){
this.autoPlay();
this.caroursel.hover(function(){clearInterval(self.timer)},function(){self.autoPlay()})
}
};
Caroursel.prototype = {
autoPlay:function(){
var that = this;
this.timer =  window.setInterval(function(){
that.nextBtn.click();
},that.setting.dealy)
},

refreshCss:function(){
var curFirstPos;//当前位于中间的li元素位置
for( i = 0; i < this.buttonItems.length; ++i)
{
var curButton = this.buttonItems[i];
var curPos = this.curPositions[i];
if(curPos == 1){
curButton.addClass('poster-btn-active');
}
else
{
curButton.removeClass('poster-btn-active');
}
}
console.log('after refresh claass');
},

//记录每次移动的状态
refreshPositions:function(offset){
console.log('before refreshPositions',this.curPositions);
for( i = 0; i < this.curPositions.length; ++i)
{
var nextPos = this.curPositions[i] + offset;
if (nextPos > this.curPositions.length) {//移动超过末尾,则位置变成到开头
nextPos = 1;
}else
if (nextPos < 1) {////向左边移动已经移动到开始位置更左边,则位置变成结束
nextPos = this.curPositions.length;
}
this.curPositions[i] = nextPos;
}
console.log('after refreshPositions',this.curPositions);
this.refreshCss();
},
//点击位置按钮,根据点击的按钮索引 决定向左还是向右移动[因为只有三个位置,该方法能够仅靠向左或向右就能将
//指定的位置移动到中间]
clickPosButtonIndex:function(index){
console.log('click the index ' + index);
var self = this;
if(self.rotateFlag == false) {//目前正在移动等移动结束后才能进入
return;
}

var curPos = this.curPositions[index];
console.log('cur pos' + curPos);

var moveDirection = null;
if(curPos == 2){//目标位置现在 在zuo边,要移动到中间 只需要向左边移动一次
moveDirection = "right";
}else
if(curPos == 3){//目标位置现在在you边,向右边移动一次
moveDirection = "left";
}

if(moveDirection != null){
console.log('move to ' + moveDirection);
self.rotateFlag = false;
self.rotateAnimate(moveDirection)
}
},

rotateAnimate:function(type){
var that = this;
var zIndexArr = [];
if(type == "left"){//将posterItems的每个元素移动到下一个元素所在的位置
this.posterItems.each(function(){
var self = $(this),
prev = $(this).next().get(0)?$(this).next():that.firstPosterItem,
width = prev.css("width"),
height = prev.css("height"),
zIndex = prev.css("zIndex"),
opacity = prev.css("opacity"),
left = prev.css("left"),
top = prev.css("top");
zIndexArr.push(zIndex);
self.animate({
"width":width,
"height":height,
"left":left,
"opacity":opacity,
"top":top
},that.setting.speed,function(){
that.rotateFlag = true;
});
});
this.posterItems.each(function(i){
$(this).css("zIndex",zIndexArr[i]);
});
this.refreshPositions(1);
}
if(type == "right"){////将posterItems的每个元素移动到下上一个元素所在的位置
this.posterItems.each(function(){
var self = $(this),
next = $(this).prev().get(0)?$(this).prev():that.lastPosterItem,
width = next.css("width"),
height = next.css("height"),
zIndex = next.css("zIndex"),
opacity = next.css("opacity"),
left = next.css("left"),
top = next.css("top");
zIndexArr.push(zIndex);
self.animate({
"width":width,
"height":height,
"left":left,
"opacity":opacity,
"top":top
},that.setting.speed,function(){
that.rotateFlag = true;
});
});
this.posterItems.each(function(i){
$(this).css("zIndex",zIndexArr[i]);
});
this.refreshPositions(-1);
}
},
setFirstPosition:function(){
this.caroursel.css({"width":this.setting.width,"height":this.setting.height});
this.posterList.css({"width":this.setting.width,"height":this.setting.height});
var width = (this.setting.width - this.setting.posterWidth) / 2;

this.prevBtn.css({"width":width , "height":this.setting.height,"zIndex":Math.ceil(this.posterItems.size()/2)});
this.nextBtn.css({"width":width , "height":this.setting.height,"zIndex":Math.ceil(this.posterItems.size()/2)});
this.firstPosterItem.css({
"width":this.setting.posterWidth,
"height":this.setting.posterHeight,
"left":width,
"zIndex":Math.ceil(this.posterItems.size()/2),
"top":this.setVertialType(this.setting.posterHeight)
});
},
setSlicePosition:function(){
var _self = this;
var sliceItems = this.posterItems.slice(1),
level = Math.floor(this.posterItems.length/2),
leftItems = sliceItems.slice(0,level),
rightItems = sliceItems.slice(level),
posterWidth = this.setting.posterWidth,
posterHeight = this.setting.posterHeight,
Btnwidth = (this.setting.width - this.setting.posterWidth) / 2,
gap = Btnwidth/level,
containerWidth = this.setting.width;

var i = 1;
var leftWidth = posterWidth;
var leftHeight = posterHeight;
var zLoop1 = level;
leftItems.each(function(index,item){
leftWidth = posterWidth * _self.setting.scale;
leftHeight = posterHeight*_self.setting.scale;
$(this).css({
"width":leftWidth,
"height":leftHeight,
"left": Btnwidth - i*gap,
"zIndex":zLoop1--,
"opacity":1/(i+1),
"top":_self.setVertialType(leftHeight)
});
i++;
});

var j = level;
var zLoop2 = 1;
var rightWidth = posterWidth;
var rightHeight = posterHeight;
rightItems.each(function(index,item){
var rightWidth = posterWidth * _self.setting.scale;
var rightHeight = posterHeight*_self.setting.scale;
$(this).css({
"width":rightWidth,
"height":rightHeight,
"left": containerWidth -( Btnwidth - j*gap + rightWidth),
"zIndex":zLoop2++,
"opacity":1/(j+1),
"top":_self.setVertialType(rightHeight)
});
j--;
});
},
getSetting:function(){
var settting = this.caroursel.attr("data-setting");
if(settting.length > 0){
return $.parseJSON(settting);
}else{
return {};
}
},
setVertialType:function(height){
var algin = this.setting.algin;
if(algin == "top") {
return 0
}else if(algin == "middle"){
return (this.setting.posterHeight - height) / 2
}else if(algin == "bottom"){
return this.setting.posterHeight - height
}else {
return (this.setting.posterHeight - height) / 2
}
}
};
Caroursel.init = function (caroursels){
caroursels.each(function(index,item){
new Caroursel($(this));
})  ;
};
window["Caroursel"] = Caroursel;
})(jQuery);


效果图:

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