feat：新增开启水印配置

src/utils/wartermark.js

@@ -0,0 +1,62 @@
+export const getmark = () => {
+  const setWatermark = (str) => {
+    const id = "1.23452384164.123412416";
+
+    if (document.getElementById(id) !== null) {
+      document.body.removeChild(document.getElementById(id));
+    }
+
+    //创建一个画布
+    const can = document.createElement("canvas");
+    //设置画布的长宽
+    can.width = 150;
+    can.height = 120;
+
+    const cans = can.getContext("2d");
+    //旋转角度
+    cans.rotate((-15 * Math.PI) / 180);
+    cans.font = "18px Vedana";
+    //设置填充绘画的颜色、渐变或者模式
+    cans.fillStyle = "rgba(200, 200, 200, 0.40)";
+    //设置文本内容的当前对齐方式
+    cans.textAlign = "left";
+    //设置在绘制文本时使用的当前文本基线
+    // cans.textBaseline = "Middle";
+    //在画布上绘制填色的文本（输出的文本，开始绘制文本的X坐标位置，开始绘制文本的Y坐标位置）
+    cans.fillText(str, can.width / 8, can.height / 2);
+
+    const div = document.createElement("div");
+    div.id = id;
+    div.style.pointerEvents = "none";
+    div.style.top = "30px";
+    div.style.left = "0px";
+    div.style.position = "fixed";
+    div.style.zIndex = "100000";
+    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;
+  };
+
+  // 该方法只允许调用一次
+  const watermark = (str) => {
+    let id = setWatermark(str);
+    setInterval(() => {
+      if (document.getElementById(id) === null) {
+        id = setWatermark(str);
+      }
+    }, 500);
+    window.onresize = () => {
+      setWatermark(str);
+    };
+  };
+  const removeWatermark = () => {
+    const id = "1.23452384164.123412416";
+    if (document.getElementById(id) !== null) {
+      document.body.removeChild(document.getElementById(id));
+    }
+  }
+  return { setWatermark, watermark, removeWatermark };
+};