84 lines
4.3 KiB
Plaintext
84 lines
4.3 KiB
Plaintext
function watermark(settings) {
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//默认设置
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var defaultSettings = {
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watermarl_element: "LAY_app_body",
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watermark_txt: "",
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watermark_x: 10,//水印起始位置x轴坐标
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watermark_y: 10,//水印起始位置Y轴坐标
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watermark_rows: 2000,//水印行数
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watermark_cols: 2000,//水印列数
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watermark_x_space: 50,//水印x轴间隔
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watermark_y_space: 50,//水印y轴间隔
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watermark_color: '#d7d7d7',//水印字体颜色
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watermark_alpha: 0.2,//水印透明度
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watermark_fontsize: '15px',//水印字体大小
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watermark_font: '微软雅黑',//水印字体
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watermark_width: 400,//水印宽度
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watermark_height: 50,//水印长度
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watermark_angle: 30//水印倾斜度数
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};
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//采用配置项替换默认值，作用类似jquery.extend
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if (arguments.length === 1 && typeof arguments[0] === "object") {
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var src = arguments[0] || {};
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for (key in src) {
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if (src[key] && defaultSettings[key] && src[key] === defaultSettings[key]) {
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continue;
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} else if (src[key]) {
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defaultSettings[key] = src[key];
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}
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}
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}
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var oTemp = document.createDocumentFragment();
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var maskElement = document.getElementById(defaultSettings.watermarl_element) || document.body;
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//获取页面最大宽度
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var page_width = Math.max(maskElement.scrollWidth, maskElement.clientWidth);
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//获取页面最大高度
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var page_height = Math.max(maskElement.scrollHeight, maskElement.clientHeight, maskElement.scrollTop);
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//水印数量自适应元素区域尺寸
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defaultSettings.watermark_cols = Math.ceil(page_width / (defaultSettings.watermark_x_space + defaultSettings.watermark_width));
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defaultSettings.watermark_rows = Math.ceil(page_height / (defaultSettings.watermark_y_space + defaultSettings.watermark_height));
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var x;
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var y;
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for (var i = 0; i < defaultSettings.watermark_rows; i++) {
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y = defaultSettings.watermark_y + (defaultSettings.watermark_y_space + defaultSettings.watermark_height) * i;
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for (var j = 0; j < defaultSettings.watermark_cols; j++) {
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x = defaultSettings.watermark_x + (defaultSettings.watermark_width + defaultSettings.watermark_x_space) * j;
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var mask_div = document.createElement('div');
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mask_div.id = 'mask_div' + i + j;
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mask_div.className = 'mask_div';
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//mask_div.appendChild(document.createTextNode(defaultSettings.watermark_txt));
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mask_div.innerHTML = (defaultSettings.watermark_txt);
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//设置水印div倾斜显示
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mask_div.style.webkitTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
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mask_div.style.MozTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
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mask_div.style.msTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
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mask_div.style.OTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
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mask_div.style.transform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
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mask_div.style.visibility = "";
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mask_div.style.position = "absolute";
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mask_div.style.left = x + 'px';
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mask_div.style.top = y + 'px';
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mask_div.style.overflow = "hidden";
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mask_div.style.zIndex = "10"; // 9999
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// pointer-events:none 让水印不遮挡页面的点击事件
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mask_div.style.pointerEvents = 'none';
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// 设置边框
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// mask_div.style.border="solid #eee 1px";
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// 兼容IE9以下的透明度设置
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mask_div.style.filter = "alpha(opacity=50)";
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mask_div.style.opacity = defaultSettings.watermark_alpha;
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mask_div.style.fontSize = defaultSettings.watermark_fontsize;
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mask_div.style.fontFamily = defaultSettings.watermark_font;
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mask_div.style.color = defaultSettings.watermark_color;
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mask_div.style.textAlign = "center";
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mask_div.style.width = defaultSettings.watermark_width + 'px';
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mask_div.style.height = defaultSettings.watermark_height + 'px';
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mask_div.style.display = "block";
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oTemp.appendChild(mask_div);
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}
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}
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maskElement.appendChild(oTemp);
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} |