@fmdevui/fm-dev
Version:
Page level components developed based on Element Plus.
40 lines (38 loc) • 1.34 kB
JavaScript
const setWatermark = (str) => {
const id = "1.23452384164.123412416";
if (document.getElementById(id) !== null) document.body.removeChild(document.getElementById(id));
const can = document.createElement("canvas");
can.width = 400;
can.height = 200;
const cans = can.getContext("2d");
cans.rotate(-20 * Math.PI / 180);
cans.font = "12px Vedana";
cans.fillStyle = "rgba(200, 200, 200, 0.30)";
cans.textBaseline = "middle";
cans.fillText(str, can.width / 10, can.height, can.width);
const div = document.createElement("div");
div.id = id;
div.style.pointerEvents = "none";
div.style.top = "0px";
div.style.left = "0px";
div.style.position = "fixed";
div.style.zIndex = "10000000";
div.style.width = `${document.documentElement.clientWidth}px`;
div.style.height = `${document.documentElement.clientHeight}px`;
div.style.background = `url(${can.toDataURL("image/png")}) left top repeat`;
document.body.appendChild(div);
return id;
};
const Watermark = {
// 设置水印
set: (str) => {
let id = setWatermark(str);
if (document.getElementById(id) === null) id = setWatermark(str);
},
// 删除水印
del: () => {
let id = "1.23452384164.123412416";
if (document.getElementById(id) !== null) document.body.removeChild(document.getElementById(id));
}
};
export { Watermark };