jQuery插件实现图片展开效果，jquery.gallery。仿腾讯QQ空间说说图片展示效果。

公司的项目http://www.umfun.com/，有个说说的页面（和腾讯QQ空间说说一样），里面有个发表图片功能，上传完图片，需要点击展开的效果。

当时手里面事情比较多（公司就我一个前端），忙不过来，就用插件来实现了，试了fancyBox、lightbox等jQuery插件。插件都满足不了项目各种奇怪的需求，但是时间有限，只能先凑合了。、

项目上线后，最近时间比较充足，我就想把写个插件封装一下。毕竟人家的插件比较臃肿，修改起来麻烦，同时免得以后又是各种修改，还是根据公司的项目需求写比较好。。。

效果预览，如果下图所示：

jQuery插件实现图片展开效果，jquery.gallery。仿腾讯QQ空间说说图片展示效果。

点击图片后，展示：

jQuery插件实现图片展开效果，jquery.gallery。仿腾讯QQ空间说说图片展示效果。

2014-4-18更新

更新内容：1、兼容性问题；

　　　　　 2、点击大图切换到下一张图

<!doctype html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>画廊</title>

    <style>

    /*

    * jquery gallery CSS

    * ZhaoHuanLei - 20140418

    */

    .gallery-overlay {width:100%;height:100%;position:fixed;_top:absolute;top:0;left:0;z-index:99;filter:progid:DXImageTransform.Microsoft.gradient(enabled='true',startColorstr='#B2000000', endColorstr='#B2000000');background-color:rgba(0,0,0,.7);}

    :root .gallery-overlay {filter:none;}

    .gallery-close,

    .gallery-prev,

    .gallery-next {position:absolute;color:#fff;text-decoration:none;}

    .gallery-prev,

    .gallery-next {top:40%;font:bold 80px/80px simsun;}

    .gallery-prev {left:50px;}

    .gallery-next {right:50px;}

    .gallery-close {width:82px;height:77px;top:0;right:0;background:url(http://images.cnitblog.com/i/333689/201404/181538254946336.png) no-repeat;text-indent:-9999em;}

    .gallery-photo {width:100%;height:100%;position:absolute;top:50px;vertical-align:middle;text-align:center;}

    .gallery-photo span {height:100%;display:inline-block;vertical-align:middle;}

    .gallery-photo img {max-width:100%;max-height:100%;vertical-align:middle;cursor:pointer;}

    .gallery-thumb {width:100%;height:56px;position:absolute;bottom:50px;text-align:center;font-size:0;}

    .gallery-thumb a {width:50px;height:50px;overflow:hidden;margin:0 2px;display:inline-block;*zoom:1;border:3px solid transparent;opacity:.6;filter:alpha(opacity:60);}

    .gallery-thumb img {max-width:100px;max-height:100px;min-width:50px;min-height:50px;border:none;}

    .gallery-thumb .selected {border-color:#f60;opacity:1;filter:alpha(opacity:100);}

    </style>

</head>

<body style="height:2000px;">

<h1>画廊</h1>

<p class="img">

    <a href="https://images0.cnblogs.com/i/333689/201403/181012241467455.jpg"><img src="https://images0.cnblogs.com/i/333689/201403/181012064744754.jpg" alt=""></a>

    <a href="https://images0.cnblogs.com/i/333689/201403/181012428021756.jpg"><img src="https://images0.cnblogs.com/i/333689/201403/181012349904375.jpg" alt=""></a>

    <a href="https://images0.cnblogs.com/i/333689/201403/181012573656772.jpg"><img src="https://images0.cnblogs.com/i/333689/201403/181012512096320.jpg" alt=""></a>

    <a href="https://images0.cnblogs.com/i/333689/201403/181013163811731.jpg"><img src="https://images0.cnblogs.com/i/333689/201403/181013035524683.jpg" alt=""></a>

    <a href="https://images0.cnblogs.com/i/333689/201403/181013442711411.jpg"><img src="https://images0.cnblogs.com/i/333689/201403/181013354124216.jpg" alt=""></a>

</p>

<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>

<script>

/*

* jquery gallery JS

* ZhaoHuanLei - 20140418

*/

;(function($) {

    $.fn.extend({

        gallery: function() {

            $(this).on("click", function() {

                var self = $(this),

                    link = self.parent().find("a"),

                    bd = $("body");

                    html = "\

                        <div class='gallery-overlay'>\

                            <div class='gallery-photo'><span></span><img src='"+ self.attr("href") +"'></div>\

                            <div class='gallery-thumb'></div>\

                            <a class='gallery-prev' href='javascript:;' title='上一个'>&lt;</a>\

                            <a class='gallery-next' href='javascript:;' title='下一个'>&gt;</a>\

                            <a class='gallery-close' href='javascript:;' title='关闭'>&times;</a>\

                        </div>\

                    ";

                bd.css("overflow-y", "hidden").append(html);

                var overlay = $(".gallery-overlay"),

                    photo = $(".gallery-photo"),

                    photoImg = photo.find("img"),

                    thumb = $(".gallery-thumb"),

                    prev = $(".gallery-prev"),

                    next = $(".gallery-next"),

                    close = $(".gallery-close"),

                    str = "";

                //浏览器缩放时候，重置

                function toResize() {

                    var height = $(window).height();

                    overlay.height(height);

                    photo.css({"height": height - 200});

                    photoImg.css({"max-height": height - 200});//解决safari下bug

                }

                toResize();

                $(window).resize(function() {

                    toResize();

                });

                //生成缩略图列表

                link.each(function() {

                    var href = $(this).attr("href"),

                        src = $(this).find("img").attr("src"),

                        act = "<a href='"+ href +"'><img src='"+ src +"'/></a>";

                    str += act;

                });

                thumb.append(str);

                //图片切换

                var thumbLink = thumb.find("a"),

                    len = thumbLink.length - 1,

                    index = link.index(this);

                function switchPhoto(index) {

                    var _this = thumbLink.eq(index);

                    _this.addClass("selected").siblings().removeClass("selected");

                    photo.find("img").attr("src", _this.attr("href"));

                }

                switchPhoto(index);

                thumb.on("click", "a", function() {

                    index = thumbLink.index(this);

                    switchPhoto(index);

                    return false;

                });

                //切换下一个

                function switchPrev() {

                    index--;

                    if (index < 0) {

                        index = len;

                    }

                    switchPhoto(index);

                }

                //切换上一个

                function switchNext() {

                    index++;

                    if (index > len) {

                        index = 0;

                    }

                    switchPhoto(index);

                }

                prev.on("click", function() {

                    switchPrev();

                });

                next.on("click", function() {

                    switchNext();

                });

                photo.on("click", "img", function() {

                    switchNext();

                });

                //关闭层

                function closeOverlay() {

                    overlay.remove();

                    bd.css("overflow-y", "auto");

                }

                close.on("click", function() {

                    closeOverlay();

                });

                return false;

            });

        }

    });

})(jQuery);

</script>

<script>

$(function() {

    $('.img a').gallery();

});

</script>

</body>

</html>

20140317上传

JQuery插件代码：

/*

* jquery gallery JS

* ZhaoHuanLei - 20140317

*/

;(function($) {

    $.fn.extend({

        gallery: function() {

            $(this).on("click", function() {

                var self = $(this),

                    link = self.parent().find("a"),

                    bd = $("body");

                    html = "\

                        <div class='gallery-overlay'>\

                            <div class='gallery-photo'><span></span><img src='"+ self.attr("href") +"'></div>\

                            <div class='gallery-thumb'></div>\

                            <a class='gallery-prev' href='javascript:;' title='上一个'>&lt;</a>\

                            <a class='gallery-next' href='javascript:;' title='下一个'>&gt;</a>\

                            <a class='gallery-close' href='javascript:;' title='关闭'>&times;</a>\

                        </div>\

                    ";

                bd.css("overflow-y", "hidden").append(html);

                var overlay = $(".gallery-overlay"),

                    photo = $(".gallery-photo"),

                    thumb = $(".gallery-thumb"),

                    prev = $(".gallery-prev"),

                    next = $(".gallery-next"),

                    close = $(".gallery-close"),

                    str = "";

                //浏览器缩放时候，重置

                function toResize() {

                    var height = $(window).height();

                    overlay.height(height);

                    photo.css({"height": height - });

                    photo.find("img").css({"max-height": height - });//解决safari下bug

                }

                toResize();

                $(window).resize(function() {

                    toResize();

                });

                //生成缩略图列表

                link.each(function() {

                    var href = $(this).attr("href"),

                        src = $(this).find("img").attr("src"),

                        act = "<a href='"+ href +"'><img src='"+ src +"'/></a>";

                    str += act;

                });

                thumb.append(str);

                //图片切换

                var thumbLink = thumb.find("a"),

                    len = thumbLink.length - ,

                    index = link.index(this);

                function imgSwitch(index) {

                    var _this = thumbLink.eq(index);

                    _this.addClass("selected").siblings().removeClass("selected");

                    photo.find("img").attr("src", _this.attr("href"));

                }

                imgSwitch(index);

                thumb.on("click", "a", function() {

                    index = thumbLink.index(this);

                    imgSwitch(index);

                    return false;

                });

                prev.on("click", function() {

                    index--;

                    if (index < ) {

                        index = len;

                    }

                    imgSwitch(index);

                });

                next.on("click", function() {

                    index++;

                    if (index > len) {

                        index = ;

                    }

                    imgSwitch(index);

                });

                //关闭层

                function closeOverlay() {

                    overlay.remove();

                    bd.css("overflow-y", "auto");

                }

                close.on("click", function() {

                    closeOverlay();

                });

                return false;

            });

        }

    });

})(jQuery);

HTML：

<!doctype html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>画廊</title>

    <link rel="stylesheet" href="style/jquery.gallery.css">

</head>

<body style="height:2000px;">

<h1>画廊</h1>

<p class="img">

    <a href="https://images0.cnblogs.com/i/333689/201403/181012241467455.jpg"><img src="https://images0.cnblogs.com/i/333689/201403/181012064744754.jpg" alt=""></a>

    <a href="https://images0.cnblogs.com/i/333689/201403/181012428021756.jpg"><img src="https://images0.cnblogs.com/i/333689/201403/181012349904375.jpg" alt=""></a>

    <a href="https://images0.cnblogs.com/i/333689/201403/181012573656772.jpg"><img src="https://images0.cnblogs.com/i/333689/201403/181012512096320.jpg" alt=""></a>

    <a href="https://images0.cnblogs.com/i/333689/201403/181013163811731.jpg"><img src="https://images0.cnblogs.com/i/333689/201403/181013035524683.jpg" alt=""></a>

    <a href="https://images0.cnblogs.com/i/333689/201403/181013442711411.jpg"><img src="https://images0.cnblogs.com/i/333689/201403/181013354124216.jpg" alt=""></a>

</p>

<script src="script/jquery-1.11.0.min.js"></script>

<script src="script/jquery.gallery.js"></script>

<script>

$(function() {

    $('.img a').gallery();

});

</script>

</body>

</html>

CSS：

/*

* jquery gallery CSS

* ZhaoHuanLei - 20140317

*/

.gallery-overlay {width:%;height:%;position:fixed;_top:absolute;top:;left:;z-index:;filter:progid:DXImageTransform.Microsoft.gradient(enabled='true',startColorstr='#CC000000', endColorstr='#CC000000');background-color:rgba(,,,.);}

:root .gallery-overlay {filter:none;}

.gallery-close,

.gallery-prev,

.gallery-next {position:absolute;color:#fff;text-decoration:none;}

.gallery-prev,

.gallery-next {top:%;font:bold 80px/80px simsun;}

.gallery-prev {left:50px;}

.gallery-next {right:50px;}

.gallery-close {width:82px;height:77px;top:;right:;background:url(../images/gallery-close.png) no-repeat;text-indent:-9999em;}

.gallery-photo {width:%;height:%;position:absolute;top:50px;vertical-align:middle;text-align:center;}

.gallery-photo span {height:%;display:inline-block;vertical-align:middle;}

.gallery-photo img {max-width:%;max-height:%;vertical-align:middle;}

.gallery-thumb {width:%;height:56px;position:absolute;bottom:50px;text-align:center;font-size:;}

.gallery-thumb a {width:50px;height:50px;overflow:hidden;margin: 2px;display:inline-block;*zoom:;border:3px solid transparent;opacity:.;filter:alpha(opacity:);}

.gallery-thumb img {max-width:100px;max-height:100px;min-width:50px;min-height:50px;border:none;}

.gallery-thumb .selected {border-color:#f60;opacity:;filter:alpha(opacity:);}