Vue 视频会议应用程序示例：使用 WebRTC-Adapter 集成视频会议、屏幕共享和白板功能

当使用 'webrtc-adapter' 包时，以下是一个整合了视频会议、共享屏幕和画板功能的 Vue 代码示例：

<!DOCTYPE html>
<html>
<head>
  <title>Vue Video Conference App</title>
  <script src='https://cdn.jsdelivr.net/npm/vue/dist/vue.js'></script>
  <script src='https://webrtc.github.io/adapter/adapter-latest.js'></script>
  <style>
    #app {
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    h1 {
      margin-top: 20px;
    }

    video {
      margin-top: 20px;
      max-width: 400px;
    }

    #remoteVideos {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      margin-top: 20px;
    }

    #remoteVideos video {
      margin: 10px;
      max-width: 200px;
    }

    #whiteboard {
      margin-top: 20px;
      border: 1px solid #ccc;
      cursor: crosshair;
    }
  </style>
</head>
<body>
  <div id='app'>
    <h1>Vue Video Conference App</h1>
    <video id='localVideo' autoplay></video>
    <div id='remoteVideos'>
      <video v-for='(remoteVideo, index) in remoteVideos' :key='index' :srcObject='remoteVideo' autoplay></video>
    </div>
    <div>
      <button @click='startVideo'>Start Video</button>
      <button @click='stopVideo'>Stop Video</button>
    </div>
    <div>
      <button @click='startScreenSharing'>Start Screen Sharing</button>
      <button @click='stopScreenSharing'>Stop Screen Sharing</button>
    </div>
    <canvas id='whiteboard' @mousedown='startDrawing' @mousemove='draw' @mouseup='stopDrawing'></canvas>
    <div>
      <input v-model='message' placeholder='Type your message'>
      <button @click='sendMessage'>Send</button>
    </div>
    <ul>
      <li v-for='(message, index) in chatMessages' :key='index'>{{ message }}</li>
    </ul>
  </div>

  <script>
    new Vue({
      el: '#app',
      data: {
        localStream: null,
        remoteVideos: [],
        isScreenSharing: false,
        isDrawing: false,
        context: null,
        message: '',
        chatMessages: []
      },
      mounted() {
        this.context = document.getElementById('whiteboard').getContext('2d');

        navigator.mediaDevices.getUserMedia({ video: true, audio: true })
          .then(stream => {
            this.localStream = stream;
            document.getElementById('localVideo').srcObject = stream;
          }).catch(error => {
            console.error('Error accessing media devices:', error);
          });
      },
      methods: {
        startVideo() {
          this.localStream.getVideoTracks()[0].enabled = true;
        },
        stopVideo() {
          this.localStream.getVideoTracks()[0].enabled = false;
        },
        startScreenSharing() {
          this.isScreenSharing = true;
          // 添加屏幕共享逻辑
          navigator.mediaDevices.getDisplayMedia({ video: true, audio: true })
            .then(stream => {
              this.localStream = stream;
              document.getElementById('localVideo').srcObject = stream;
            }).catch(error => {
              console.error('Error accessing screen sharing:', error);
              this.isScreenSharing = false;
            });
        },
        stopScreenSharing() {
          this.isScreenSharing = false;
          // 添加停止屏幕共享逻辑
          navigator.mediaDevices.getUserMedia({ video: true, audio: true })
            .then(stream => {
              this.localStream = stream;
              document.getElementById('localVideo').srcObject = stream;
            }).catch(error => {
              console.error('Error accessing media devices:', error);
            });
        },
        startDrawing(event) {
          if (this.isScreenSharing) return;
          this.isDrawing = true;
          this.context.beginPath();
          this.context.moveTo(event.clientX, event.clientY);
        },
        draw(event) {
          if (this.isDrawing) {
            this.context.lineTo(event.clientX, event.clientY);
            this.context.stroke();
          }
        },
        stopDrawing() {
          this.isDrawing = false;
        },
        sendMessage() {
          this.chatMessages.push(this.message);
          this.message = '';
        }
      }
    });
  </script>
</body>
</html>

在这个示例中，我们添加了 <script src='https://webrtc.github.io/adapter/adapter-latest.js'></script> 来加载 'webrtc-adapter' 库。这个库将提供兼容各个浏览器的 WebRTC 功能。

请注意，我们使用 srcObject 属性而不是 src 属性来设置视频元素的源，因为在 'webrtc-adapter' 中，使用 srcObject 属性更为兼容。此外，屏幕共享和媒体设备访问的逻辑也有所改变，以适应 'webrtc-adapter' 的要求。

这个示例中的代码整合了视频会议、共享屏幕和画板功能，同时添加了样式来美化界面。你可以根据需要进一步调整样式和功能以满足实际需求。请注意，这只是一个基本示例，实际的应用程序可能需要更多的功能和逻辑。

Vue 视频会议应用程序示例：使用 WebRTC-Adapter 集成视频会议、屏幕共享和白板功能