/**
* 绘制水印
*/
paintWaterMark() {
//默认设置
var defaultSettings = {
watermark_txt: '1212121212',
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: 10,//水印列数
watermark_x_space: -80,//水印x轴间隔
watermark_y_space: 30,//水印y轴间隔
watermark_color: '#fff',//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: 30//水印倾斜度数
};
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 = window.innerHeight;
// 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));
}
console.log("defaultSettings.watermark_cols========",defaultSettings.watermark_cols)
//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_rows = parseInt((page_height - defaultSettings.watermark_y) / (defaultSettings.watermark_height + defaultSettings.watermark_y_space) - 1);
defaultSettings.watermark_y_space = parseInt(((page_height - defaultSettings.watermark_y) - defaultSettings.watermark_height * defaultSettings.watermark_rows) / (defaultSettings.watermark_rows - 1));
}
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';
mask_div.appendChild(document.createTextNode(defaultSettings.watermark_txt));
//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 = "absolute";
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 - defaultSettings.watermark_angle - defaultSettings.watermark_y_space) + 'px'; //不减去倾斜角度、间距的话 页面滚动会出现下面留白问题
mask_div.style.display = "block";
oTemp.appendChild(mask_div);
};
};
document.getElementById('markwater').appendChild(oTemp); //注意：在html标签中定义id="markwater"！！！！！！
},
howRowCol() {
//这部分 代码 就是上面 那块计算 行数 和列数
let mobilePhone = '';
if(this.userInfo.data.mobilePhone !== null) {
mobilePhone = this.userInfo.data.mobilePhone.substr(-4);
}
//默认设置
var defaultSettings = {
watermark_txt: this.userInfo.data.showName + " " + mobilePhone,
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: 10,//水印列数
watermark_x_space: -80,//水印x轴间隔
watermark_y_space: 30,//水印y轴间隔
watermark_color: '#D4D2D2',//水印字体颜色
watermark_alpha: 0.5,//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: 30//水印倾斜度数
};
//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 = window.innerHeight;
//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));
}
console.log("defaultSettings.watermark_cols========",defaultSettings.watermark_cols)
//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_rows = parseInt((page_height - defaultSettings.watermark_y) / (defaultSettings.watermark_height + defaultSettings.watermark_y_space) - 1);
defaultSettings.watermark_y_space = parseInt(((page_height - defaultSettings.watermark_y) - defaultSettings.watermark_height * defaultSettings.watermark_rows) / (defaultSettings.watermark_rows - 1));
}
return defaultSettings;
},
/**
* 清楚水印 -- 没用到
*/
clearMark() {
let watermark_rows = this.howRowCol().watermark_rows;
let watermark_cols = this.howRowCol().watermark_cols;
for(let i = 0; i < watermark_rows; i++) {
for(let j = 0; j < watermark_cols; j++) {
if(document.getElementById(`mask_div${
i}${
j}`)) {
document.getElementById(`mask_div${
i}${
j}`).remove();
}
}
}
}
h5 页面水印
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转载自blog.csdn.net/weixin_43843679/article/details/120166145
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