//
 
//改编摘自：http://www.cnblogs.com/daixinyu/p/6715398.html
 
//hjl 2017年6月19日19:25:43
 
 
 
function watermark(settings) {
 
    //默认设置
 
    var defaultSettings = {
 
        watermark_txt0: "text",
 
        watermark_txt1: "text",
 
        watermark_txt2: "text", //根据本业务需求  有三行 换行显示  创建三个节点
 
        watermark_x: 20, //水印起始位置x轴坐标
 
        watermark_y: 20, //水印起始位置Y轴坐标
 
        watermark_rows: 20, //水印行数
 
        watermark_cols: 20, //水印列数
 
        watermark_x_space: 100, //水印x轴间隔
 
        watermark_y_space: 50, //水印y轴间隔
 
        watermark_color: '#aaa', //水印字体颜色
 
        watermark_alpha: 0.1, //水印透明度
 
        watermark_fontsize: '15px', //水印字体大小
 
        watermark_font: '微软雅黑', //水印字体
 
        watermark_width: 210, //水印宽度
 
        watermark_height: 80, //水印长度
 
        watermark_angle: 15 //水印倾斜度数
 
    };
 
    //采用配置项替换默认值，作用类似jquery.extend
 
    if (arguments.length === 1 && typeof arguments[0] === "object")
 
    {
 
        var src = arguments[0] || {};
 
        for (key in src)
 
        {
 
            if (src[key] && defaultSettings[key] && src[key] === defaultSettings[key])
 
                continue;
 
            else if (src[key])
 
                defaultSettings[key] = src[key];
 
        }
 
    }
 
 
 
    var oTemp = document.createDocumentFragment();
 
 
 
    //获取页面最大宽度
 
    var page_width = Math.max(document.body.scrollWidth, document.body.clientWidth);
 
    var cutWidth = page_width * 0.0150;
 
    var page_width = page_width - cutWidth;
 
    //获取页面最大高度
 
    var page_height = Math.max(document.body.scrollHeight, document.body.clientHeight) + 450;
 
    // var page_height = document.body.scrollHeight+document.body.scrollTop;
 
    //如果将水印列数设置为0，或水印列数设置过大，超过页面最大宽度，则重新计算水印列数和水印x轴间隔
 
    if (defaultSettings.watermark_cols == 0 || (parseInt(defaultSettings.watermark_x + defaultSettings.watermark_width * defaultSettings.watermark_cols + defaultSettings.watermark_x_space * (defaultSettings.watermark_cols - 1)) > page_width)) {
 
        defaultSettings.watermark_cols = parseInt((page_width - defaultSettings.watermark_x + defaultSettings.watermark_x_space) / (defaultSettings.watermark_width + defaultSettings.watermark_x_space));
 
        defaultSettings.watermark_x_space = parseInt((page_width - defaultSettings.watermark_x - defaultSettings.watermark_width * defaultSettings.watermark_cols) / (defaultSettings.watermark_cols - 1));
 
    }
 
    //如果将水印行数设置为0，或水印行数设置过大，超过页面最大长度，则重新计算水印行数和水印y轴间隔
 
    if (defaultSettings.watermark_rows == 0 || (parseInt(defaultSettings.watermark_y + defaultSettings.watermark_height * defaultSettings.watermark_rows + defaultSettings.watermark_y_space * (defaultSettings.watermark_rows - 1)) > page_height)) {
 
        defaultSettings.watermark_rows = parseInt((defaultSettings.watermark_y_space + page_height - defaultSettings.watermark_y) / (defaultSettings.watermark_height + defaultSettings.watermark_y_space));
 
        defaultSettings.watermark_y_space = parseInt(((page_height - defaultSettings.watermark_y) - defaultSettings.watermark_height * defaultSettings.watermark_rows) / (defaultSettings.watermark_rows - 1));
 
    }
	defaultSettings.watermark_rows = 6;
    var x;
 
    var y;
 
    for (var i = 0; i < defaultSettings.watermark_rows; i++) {
 
        y = defaultSettings.watermark_y + (defaultSettings.watermark_y_space + defaultSettings.watermark_height) * i;
 
        for (var j = 0; j < defaultSettings.watermark_cols; j++) {
 
            x = defaultSettings.watermark_x + (defaultSettings.watermark_width + defaultSettings.watermark_x_space) * j;
 
 
 
            var mask_div = document.createElement('div');
 
            mask_div.id = 'mask_div' + i + j;
 
            mask_div.className = 'mask_div';
 
            ///三个节点
 
            var span0 = document.createElement('div');
 
            span0.appendChild(document.createTextNode(defaultSettings.watermark_txt0));
 
            var span1 = document.createElement('div');
 
            span1.appendChild(document.createTextNode(defaultSettings.watermark_txt1));
 
            var span2 = document.createElement('div');
 
            span2.appendChild(document.createTextNode(defaultSettings.watermark_txt2));
 
            mask_div.appendChild(span0);
 
            mask_div.appendChild(span1);
 
            mask_div.appendChild(span2);
 
            //设置水印div倾斜显示
 
            mask_div.style.webkitTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
 
            mask_div.style.MozTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
 
            mask_div.style.msTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
 
            mask_div.style.OTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
 
            mask_div.style.transform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
 
            mask_div.style.visibility = "";
 
            mask_div.style.position = "fixed";
 
            mask_div.style.left = x + 'px';
 
            mask_div.style.top = y + 'px';
 
            mask_div.style.overflow = "hidden";
 
            mask_div.style.zIndex = "9999";
 
            mask_div.style.pointerEvents = 'none'; //pointer-events:none  让水印不遮挡页面的点击事件
 
            //mask_div.style.border="solid #eee 1px";
 
            mask_div.style.opacity = defaultSettings.watermark_alpha;
 
            mask_div.style.fontSize = defaultSettings.watermark_fontsize;
 
            mask_div.style.fontFamily = defaultSettings.watermark_font;
 
            mask_div.style.color = defaultSettings.watermark_color;
 
            mask_div.style.textAlign = "center";
 
            mask_div.style.width = defaultSettings.watermark_width + 'px';
 
            mask_div.style.height = defaultSettings.watermark_height + 'px';
 
            mask_div.style.display = "block";
 
            oTemp.appendChild(mask_div);
 
        };
 
    };
 
    document.body.appendChild(oTemp);
 
}
 
 
 
//对Date的扩展，将 Date 转化为指定格式的String
 
//月(M)、日(d)、小时(h)、分(m)、秒(s)、季度(q) 可以用 1-2 个占位符，
 
//年(y)可以用 1-4 个占位符，毫秒(S)只能用 1 个占位符(是 1-3 位的数字)
 
//例子：
 
//(new Date()).Format("yyyy-MM-dd hh:mm:ss.S") ==> 2006-07-02 08:09:04.423
 
//(new Date()).Format("yyyy-M-d h:m:s.S")      ==> 2006-7-2 8:9:4.18
 
//author: meizz
 
Date.prototype.Format = function (fmt) {
 
    var o = {
 
        "M+": this.getMonth() + 1, //月份
 
        "d+": this.getDate(), //日
 
        "h+": this.getHours(), //小时
 
        "m+": this.getMinutes(), //分
 
        "s+": this.getSeconds(), //秒
 
        "q+": Math.floor((this.getMonth() + 3) / 3), //季度
 
        "S": this.getMilliseconds() //毫秒
 
    };
 
    if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
 
    for (var k in o)
 
        if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
 
    return fmt;
 
}
 
function getTime() {
 
    return new Date().Format("yyyy年MM月dd日 hh:mm:ss");
 
}