我目前正在编写一个程序，它混合使用 Electron 和 React-Redux 在屏幕/应用程序顶部创建一个覆盖窗口。我成功地创建了透明覆盖窗口并列出了所有有效的媒体流。但是我不知道如何让这个新的覆盖窗口匹配所选流的大小/位置并动态调整大小。最重要的是，我希望叠加层单独位于所选流的顶部。

欢迎任何提示:)

// In MainProcess

ipcMain.on(ELECTRON_CREATE_OVERLAY_WINDOW, (event, windowSettings) => {
  if (overlayWindow !== null) {
    console.error('Trying to create an Overlay window when there is already one!')
    return
  }

  console.log('Creating the Overlay window')
  overlayWindow = new BrowserWindow({
    width: windowSettings.width,
    height: windowSettings.height,
    webPreferences: {
      nodeIntegration: true,
      enableRemoteModule: true,
    },
    transparent: true,
    frame: false,
    alwaysOnTop: true,
  });

  overlayWindow.setIgnoreMouseEvents(true);
  overlayWindow.loadURL("http://localhost:3000/overlay");

  overlayWindow.on('closed', () => {
    console.log('Overlay window closed')
    overlayWindow = null
  })

});

// In React page / RendererProcess

React.useEffect(async () => {
    desktopCapturer
      .getSources({
        types: ["window", "screen"],
      })
      .then((inputSources) => {
        for (let i = 0; i < inputSources.length; i++) {
          let source = inputSources[i];
          const constraints = {
            audio: false,
            video: {
              mandatory: {
                chromeMediaSource: "desktop",
                chromeMediaSourceId: source.id,
              },
            },
          };

          navigator.mediaDevices.getUserMedia(constraints).then((stream) => {
            inputSources[i].stream = stream;
            console.log('stream', stream)
            // When we got all streams, update the state
            if (i == inputSources.length - 1) {
              setSources([...inputSources]);
            }
          });
        }
      });
  }, []);

...

const launchOverlay = (source) => {
  const streamSettings = source.stream.getVideoTracks()[0].getSettings();
  console.log(source)
  console.log(source.stream)
  console.log(streamSettings)
  createOverlayWindow({ width: streamSettings.width, height: streamSettings.height })
};