[Stephen]页面实现瀑布流源码

项目中使用到的瀑布流代码

@using tZ.Pms.Biz
@using tZ.Mvc.Base

@model IPageInfo
@{
    ViewBag.Title = Model.WebTitle;
    ViewBag.Desc = Model.Desc;
    ViewBag.KeyWords = Model.Seo;
    Layout = "~/Views/Shared/_cnInnerLayout.cshtml";
}

<style type="text/css" media="screen">
    *
    {
        margin: auto;
    }

    /*body
    {
        margin: 20px 0;
        background: #abc;
        color: #111;
        font-family: Helvetica, Arial, Verdana, 'Lucida Grande', sans-serif;
    }*/

    h1, h3, p
    {
        text-align: center;
    }

    div.example
    {
        padding: 20px;
        margin: 10px auto;
        width: 850px;
    }

        div.example h3
        {
            margin-bottom: 10px;
        }

    #images
    {
        width: 850px;
        height: 750px;
        overflow-x: hidden;
        text-align: left;
        list-style: none;
        overflow-y: scroll;
    }

    .endless_scroll_loader
    {
        position: static;
        width: 100px;
    }
</style>
@*<script type="text/javascript" src="@Url.Content("/Scripts/jquery.endless-scroll/jquery.min.js")"></script>
<script type="text/javascript" src="@Url.Content("/Scripts/jquery.endless-scroll/jquery.endless-scroll.js")"></script>*@
@*<script type="text/javascript" charset="utf-8">
    var maxCount = -1;
    $(function () {
        $("#images").endlessScroll({
            inflowPixels: 100,
            fireDelay: 3,
            loader: '<div>加载中...</div>',
            insertAfter: "#endless_scroll_content_current",
            content: function (i, p, d) {
                if (p < 0 || p <= maxCount) {
                    return true;
                }
                if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari
                    xmlhttp = new XMLHttpRequest();
                }
                else {// code for IE6, IE5
                    xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
                }
                xmlhttp.open("GET", "@Url.Action("LoadNewsList", ApplicationContext.Culture)" + "/" + p, false);
                xmlhttp.send();
                if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
                    return xmlhttp.responseText;
                }
                else
                    return "";
            }

        })
    });
</script>*@

@*<div class="example">
    @using (var mg = BizFactory.GetManager())
    {
        var portal = mg.GetProvider<IArticlesPortal>();
        var search = portal.FetchArticlesSearch();
        search.Lang = ApplicationContext.Culture;
        search.Page = 1;
        search.Limit = 10;
        var list = portal.FetchArticlesInfos(search, RcudController.DbCode) as IEnumerable<IArticlesInfo>;
         <ul id="images">
            @foreach (var de in list)
            {
                <li><label>@de.ArtTitle</label><img height="111" alt="@de.ArtTitle" src="@Url.Content("/" + de.ArtImage)"/></li>
            }
        </ul>
    }
</div>*@
<style>
    body, div
    {
        margin: 0;
        padding: 0;
    }

    img
    {
        border: 0;
    }

    #container
    {
        text-align: center;
        width: 700px;
        margin: 0px auto;
    }

        #container .cell
        {
            padding: 5px 5px 0;
            border: 1px solid #E3E3E3;
            background: #F5F5F5;
            margin-top: 10px;
        }

        #container p
        {
            line-height: 20px;
            margin-top: 5px;
        }
</style>
<script>
    (function ($) {
        var
        //参数
        setting = {
            column_ 204,//列宽
            column_className: 'waterfall_column',//列的类名
            column_space: 10,//列间距
            cell_selector: '.cell',//要排列的砖块的选择器，context为整个外部容器
            img_selector: 'img',//要加载的图片的选择器
            auto_imgHeight: true,//是否需要自动计算图片的高度
            fadein: true,//是否渐显载入
            fadein_speed: 600,//渐显速率，单位毫秒
            insert_type: 1, //单元格插入方式，1为插入最短那列，2为按序轮流插入
            getResource: function (index) { }  //获取动态资源函数,必须返回一个砖块元素集合,传入参数为加载的次数
        },
        //
        waterfall = $.waterfall = {},//对外信息对象
        $container = null;//容器
        waterfall.load_index = 0, //加载次数
        $.fn.extend({
            waterfall: function (opt) {
                opt = opt || {};
                setting = $.extend(setting, opt);
                $container = waterfall.$container = $(this);
                waterfall.$columns = creatColumn();
                render($(this).find(setting.cell_selector).detach(), false); //重排已存在元素时强制不渐显
                waterfall._scrollTimer2 = null;
                $(window).bind('scroll', function () {
                    clearTimeout(waterfall._scrollTimer2);
                    waterfall._scrollTimer2 = setTimeout(onScroll, 300);
                });
                waterfall._scrollTimer3 = null;
                $(window).bind('resize', function () {
                    clearTimeout(waterfall._scrollTimer3);
                    waterfall._scrollTimer3 = setTimeout(onResize, 300);
                });
            }
        });
        function creatColumn() {//创建列
            waterfall.column_num = calculateColumns();//列数
            //循环创建列
            var html = '';
            for (var i = 0; i < waterfall.column_num; i++) {
                html += '<div class="' + setting.column_className + '" style="' + setting.column_width + 'px; display:inline-block; *display:inline;zoom:1; margin-left:' + setting.column_space / 2 + 'px;margin-right:' + setting.column_space / 2 + 'px; vertical-align:top; overflow:hidden"></div>';
            }
            $container.prepend(html);//插入列
            return $('.' + setting.column_className, $container);//列集合
        }
        function calculateColumns() {//计算需要的列数
            var num = Math.floor(($container.innerWidth()) / (setting.column_width + setting.column_space));
            if (num < 1) { num = 1; } //保证至少有一列
            return num;
        }
        function render(elements, fadein) {//渲染元素
            if (!$(elements).length) return;//没有元素
            var $columns = waterfall.$columns;
            $(elements).each(function (i) {
                if (!setting.auto_imgHeight || setting.insert_type == 2) {//如果给出了图片高度，或者是按顺序插入，则不必等图片加载完就能计算列的高度了
                    if (setting.insert_type == 1) {
                        insert($(elements).eq(i), setting.fadein && fadein);//插入元素
                    } else if (setting.insert_type == 2) {
                        insert2($(elements).eq(i), i, setting.fadein && fadein);//插入元素     
                    }
                    return true;//continue
                }
                if ($(this)[0].nodeName.toLowerCase() == 'img' || $(this).find(setting.img_selector).length > 0) {//本身是图片或含有图片
                    var image = new Image;
                    var src = $(this)[0].nodeName.toLowerCase() == 'img' ? $(this).attr('src') : $(this).find(setting.img_selector).attr('src');
                    image.onload = function () {//图片加载后才能自动计算出尺寸
                        image.onreadystatechange = null;
                        if (setting.insert_type == 1) {
                            insert($(elements).eq(i), setting.fadein && fadein);//插入元素
                        } else if (setting.insert_type == 2) {
                            insert2($(elements).eq(i), i, setting.fadein && fadein);//插入元素     
                        }
                        image = null;
                    }
                    image.onreadystatechange = function () {//处理IE等浏览器的缓存问题：图片缓存后不会再触发onload事件
                        if (image.readyState == "complete") {
                            image.onload = null;
                            if (setting.insert_type == 1) {
                                insert($(elements).eq(i), setting.fadein && fadein);//插入元素
                            } else if (setting.insert_type == 2) {
                                insert2($(elements).eq(i), i, setting.fadein && fadein);//插入元素     
                            }
                            image = null;
                        }
                    }
                    image.src = src;
                } else {//不用考虑图片加载
                    if (setting.insert_type == 1) {
                        insert($(elements).eq(i), setting.fadein && fadein);//插入元素
                    } else if (setting.insert_type == 2) {
                        insert2($(elements).eq(i), i, setting.fadein && fadein);//插入元素     
                    }
                }
            });
        }
        function public_render(elems) {//ajax得到元素的渲染接口
            render(elems, true);
        }
        function insert($element, fadein) {//把元素插入最短列
            if (fadein) {//渐显
                $element.css('opacity', 0).appendTo(waterfall.$columns.eq(calculateLowest())).fadeTo(setting.fadein_speed, 1);
            } else {//不渐显
                $element.appendTo(waterfall.$columns.eq(calculateLowest()));
            }
        }
        function insert2($element, i, fadein) {//按序轮流插入元素
            if (fadein) {//渐显
                $element.css('opacity', 0).appendTo(waterfall.$columns.eq(i % waterfall.column_num)).fadeTo(setting.fadein_speed, 1);
            } else {//不渐显
                $element.appendTo(waterfall.$columns.eq(i % waterfall.column_num));
            }
        }
        function calculateLowest() {//计算最短的那列的索引
            var min = waterfall.$columns.eq(0).outerHeight(), min_key = 0;
            waterfall.$columns.each(function (i) {
                if ($(this).outerHeight() < min) {
                    min = $(this).outerHeight();
                    min_key = i;
                }
            });
            return min_key;
        }
        function getElements() {//获取资源
            $.waterfall.load_index++;
            return setting.getResource($.waterfall.load_index, public_render);
        }
        waterfall._scrollTimer = null;//延迟滚动加载计时器
        function onScroll() {//滚动加载
            clearTimeout(waterfall._scrollTimer);
            waterfall._scrollTimer = setTimeout(function () {
                var $lowest_column = waterfall.$columns.eq(calculateLowest());//最短列
                var bottom = $lowest_column.offset().top + $lowest_column.outerHeight();//最短列底部距离浏览器窗口顶部的距离
                var scrollTop = document.documentElement.scrollTop || document.body.scrollTop || 0;//滚动条距离
                var windowHeight = document.documentElement.clientHeight || document.body.clientHeight || 0;//窗口高度
                if (scrollTop >= bottom - windowHeight) {
                    render(getElements(), true);
                }
            }, 100);
        }
        function onResize() {//窗口缩放时重新排列
            if (calculateColumns() == waterfall.column_num) return; //列数未改变，不需要重排
            var $cells = waterfall.$container.find(setting.cell_selector);
            waterfall.$columns.remove();
            waterfall.$columns = creatColumn();
            render($cells, false); //重排已有元素时强制不渐显
        }
    })(jQuery);
</script>
<div id="container">
    @using (var mg = BizFactory.GetManager())
    {
        var portal = mg.GetProvider<IArticlesPortal>();
        var search = portal.FetchArticlesSearch();
        search.Lang = ApplicationContext.Culture;
        search.Page = 1;
        search.Limit = 10;
        var list = portal.FetchArticlesInfos(search, RcudController.DbCode) as IEnumerable<IArticlesInfo>;

        foreach (var de in list)
        {   <div class="cell">
            <img alt="@de.ArtTitle" src="@Url.Content("/" + de.ArtImage)"/>
            <p>@de.ArtTitle</p>
        </div>
        }

    }
</div>
<script>
    var opt = {
        getResource: function (index, render) {//index为已加载次数,render为渲染接口函数,接受一个dom集合或jquery对象作为参数。通过ajax等异步方法得到的数据可以传入该接口进行渲染，如 render(elem)
            var html = '';
            if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari
                xmlhttp = new XMLHttpRequest();
            }
            else {// code for IE6, IE5
                xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
            }
            xmlhttp.open("GET", "@Url.Action("LoadNewsList", ApplicationContext.Culture)" + "/" + index, false);
            xmlhttp.send();
            if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
                html = xmlhttp.responseText;
            }
            return html;
        },
        auto_imgHeight: true,
        insert_type: 1
    }
    $('#container').waterfall(opt);

</script>