From 1ed87c6ea9f4d4c367e7a661fdab1b2e178c9332 Mon Sep 17 00:00:00 2001
From: zhanglipeng <chinazhanglipeng@qq.com>
Date: Sun, 7 Mar 2021 20:55:20 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B0=B4=E5=8D=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ruoyi-ui/src/main.js                          |  3 +-
 ruoyi-ui/src/utils/watermark.js               | 56 +++++++++++++++++++
 .../views/benyi_train/video_study/index.vue   |  7 ++-
 3 files changed, 63 insertions(+), 3 deletions(-)
 create mode 100644 ruoyi-ui/src/utils/watermark.js

diff --git a/ruoyi-ui/src/main.js b/ruoyi-ui/src/main.js
index 32e6f19cf..7919d755e 100644
--- a/ruoyi-ui/src/main.js
+++ b/ruoyi-ui/src/main.js
@@ -29,6 +29,7 @@ import 'vue-video-player/src/custom-theme.css';
 import Print from '@/utils/print'
 import PrintECharts from '@/utils/print_echarts'
 import { preventReClick } from '@/utils/plugins';
+import watermark from '@/utils/watermark';  //路径不要写错
 // 全局方法挂载
 Vue.prototype.getDicts = getDicts
 Vue.prototype.getConfigKey = getConfigKey
@@ -44,7 +45,7 @@ Vue.prototype.$video = Video
 Vue.use(VideoPlayer);
 Vue.use(Print);
 Vue.use(PrintECharts);
-
+Vue.prototype.$watermark = watermark
 
 import LunarFullCalendar from "vue-lunar-full-calendar";
 Vue.use(LunarFullCalendar);
diff --git a/ruoyi-ui/src/utils/watermark.js b/ruoyi-ui/src/utils/watermark.js
new file mode 100644
index 000000000..81d632271
--- /dev/null
+++ b/ruoyi-ui/src/utils/watermark.js
@@ -0,0 +1,56 @@
+let watermark = {}
+
+let setWatermark = (str) => {
+  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
+  can.width = 120;
+  can.height = 120;
+
+  let 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);
+
+  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 = '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
+watermark.set = (str) => {
+  let id = setWatermark(str);
+  setInterval(() => {
+    if (document.getElementById(id) === null) {
+      id = setWatermark(str);
+    }
+  }, 500);
+  window.onresize = () => {
+    setWatermark(str);
+  };
+}
+
+export default watermark;
diff --git a/ruoyi-ui/src/views/benyi_train/video_study/index.vue b/ruoyi-ui/src/views/benyi_train/video_study/index.vue
index d0200f65d..528dd2662 100644
--- a/ruoyi-ui/src/views/benyi_train/video_study/index.vue
+++ b/ruoyi-ui/src/views/benyi_train/video_study/index.vue
@@ -68,7 +68,7 @@
             ref="videoPlayer"
           ></video-player>
           <div class="to-detail">
-            <el-tooltip effect="dark" :content="o.title" placement="bottom" > 
+            <el-tooltip effect="dark" :content="o.title" placement="bottom">
               <div>
                 <router-link
                   :to="'/video_study/study/detail/' + o.id"
@@ -150,6 +150,9 @@ export default {
       this.optionTypes = this.getTreeData(this.optionTypes);
     });
   },
+  // mounted() {
+  //   this.$watermark.set("测试专用");
+  // },
   methods: {
     exampleChange(e) {
       // console.log(e);
@@ -186,7 +189,7 @@ export default {
               {
                 type: ele.filetype,
                 // mp4
-                src: ele.videourl
+                src: ele.videourl,
                 // src: downLoadVideoUrl(ele.videourl),
               },
             ],