【vue】页面添加水印
作者：互联网
在vue项目中添加水印，注意一些设置的参数
watermark(settings) {
//debugger;
//默认设置
var defaultSettings = {
watermark_txt: "text",
watermark_x: 20, //水印起始位置x轴坐标
watermark_y: 400, //水印起始位置Y轴坐标
watermark_rows: 3, //水印行数
watermark_cols: 20, //水印列数
watermark_x_space: 50, //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: 0.4, //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: 400, //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] || {};
console.log("src", src);
for (let 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.getElementsByClassName("app-main")[0].clientWidth
);
var cutWidth = page_width * 0.015;
var page_width = page_width - cutWidth;
//获取页面最大高度
var page_height = Math.max(
document.getElementsByClassName("app-main")[0].clientHeight
);
// 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)
);
}
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 = "fixed";
mask_div.style.left = x + 160 + "px";
mask_div.style.top = y - 100*j + "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.getElementsByClassName("app-main")[0].appendChild(oTemp);
},
在main.js中引入watermark并挂在到vue原型上，如下：
import watermark from '@/utils/watermark.js'
Vue.prototype.$watermark = watermark
在需要加水印的页面的mounted中添加
//加水印
mounted() {
this.watermark({
watermark_txt: "#45618842344" + " " + "身份证: 45787784********845",
});
},
标签：style,vue,watermark,mask,水印,div,页面,defaultSettings 来源： https://blog.csdn.net/loyd3/article/details/122280900