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jQuery仿3D旋转木马效果插件(带索引按钮)

2024-08-26 16:50:51   223人阅读

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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jQuery仿3D旋转木马效果插件(带索引按钮)


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