水印添加

monkeyhouyi
1 parent 05ae724c
Showing 2 changed files with 77 additions and 0 deletions
src/main.js
src/utils/shuiyin.js
@@ -22,6 +22,9 @@ import i18n from &#39;./lang&#39; // internationalization
 import selectLoadMore from '@/utils/loadmore.js';
 import _ from 'lodash'
+import watermark from '@/utils/shuiyin'
+
+Vue.prototype.$watermark = watermark;
 Vue.config.productionTip = false
 Vue.prototype.$m = moment
 Vue.use(ElementUI, {
@@ -54,6 +57,15 @@ Vue.directive(&#39;removeAriaHidden&#39;, {
     });
   }
 });
+
+router.afterEach((item) => {
+  let { userName, mobilePhone } = store.state.user.userInfo
+  if (item.path !== '/login') {    //判断是否为登录页面，水印的内容可自定义设置
+    watermark.set(userName, mobilePhone);
+  }else{
+    watermark.set('','','');
+  }
+})
 export default new Vue({
   router,
   store,
+let watermark = {}
+ 
+let setWatermark = (str,str2,str3) => {
+  let id = '1.23452384164.123412416';
+ 
+  if (document.getElementById(id) !== null) {
+    document.body.removeChild(document.getElementById(id));
+  }
+ 
+  //创建一个画布
+  let can = document.createElement('canvas');
+  //设置画布的长宽,可以通过调节画布的宽高去设置水印分布的密度
+  can.width = 350;
+  can.height = 160;
+ 
+  let cans = can.getContext('2d');
+  //旋转角度
+  cans.rotate(-12 * Math.PI / 150);
+  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 / 6, can.height / 2);
+  if(str){
+      cans.fillText(str, 15, 80) //第一行字体
+  }
+  if(str2){
+      cans.fillText(str2, 15, 110) //第二行字体
+  }
+  if(str3){
+      cans.fillText(str3, 15, 140)//第三行字体
+  }
+ 
+  let 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 = '200000';
+  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
+watermark.set = (str,str2,str3) => {
+  let id = setWatermark(str,str2,str3);
+  setInterval(() => {
+    if (document.getElementById(id) === null) {
+      id = setWatermark(str,str2,str3);
+    }
+  }, 500);
+  window.onresize = () => {
+    setWatermark(str,str2,str3);
+  };
+}
+ 
+export default watermark;
 \ No newline at end of file