phanmn/index.html

## index.html
<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>Hello World!</title>
  </head>
  <body>
    <h1>Hello World!</h1>
    <video id="video" autoplay playsinline></video>

    <script>
      document.addEventListener('DOMContentLoaded', async () => {
        const { remote } = require('electron');
        console.log('remote', remote)
        const sourceId = remote.getCurrentWindow().getMediaSourceId();
        const stream = await navigator.mediaDevices.getUserMedia({
          video: {
            mandatory: {
              chromeMediaSource: 'desktop',
              chromeMediaSourceId: sourceId,
              maxWidth: Math.min(screen.width, 1280),
              maxHeight: Math.min(screen.height, 720),
            },
          },
          audio: false,
        });
        const video = document.getElementById('video');
        video.srcObject = stream;
      })
    </script>
  </body>
</html>

## main.js
// Modules to control application life and create native browser window
const {app, BrowserWindow} = require('electron')
const path = require('path')
const contextMenu = require('electron-context-menu')

contextMenu({
  showInspectElement: true,
});

function createWindow () {
  // Create the browser window.
  const mainWindow = new BrowserWindow({
    width: 800,
    height: 600,
    webPreferences: {
      webSecurity: false,
      nodeIntegration: true,
      enableBlinkFeatures: 'OverlayScrollbars',
      enableRemoteModule: true,
      contextIsolation: false,
      backgroundThrottling: false,
      experimentalFeatures: true,
    }
  })

  // and load the index.html of the app.
  mainWindow.loadFile('index.html')

  // Open the DevTools.
  // mainWindow.webContents.openDevTools()
}

// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.whenReady().then(() => {
  createWindow()

  app.on('activate', function () {
    // On macOS it's common to re-create a window in the app when the
    // dock icon is clicked and there are no other windows open.
    if (BrowserWindow.getAllWindows().length === 0) createWindow()
  })
})

// Quit when all windows are closed, except on macOS. There, it's common
// for applications and their menu bar to stay active until the user quits
// explicitly with Cmd + Q.
app.on('window-all-closed', function () {
  if (process.platform !== 'darwin') app.quit()
})

// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and require them here.

## preload.js
// All of the Node.js APIs are available in the preload process.
// It has the same sandbox as a Chrome extension.
window.addEventListener('DOMContentLoaded', () => {
  const replaceText = (selector, text) => {
    const element = document.getElementById(selector)
    if (element) element.innerText = text
  }

  for (const type of ['chrome', 'node', 'electron']) {
    replaceText(`${type}-version`, process.versions[type])
  }
})

## renderer.js
// This file is required by the index.html file and will
// be executed in the renderer process for that window.
// No Node.js APIs are available in this process because
// `nodeIntegration` is turned off. Use `preload.js` to
// selectively enable features needed in the rendering
// process.

## styles.css
/* Empty */
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="UTF-8">
	<title>Hello World!</title>
	</head>
	<body>
	<h1>Hello World!</h1>
	<video id="video" autoplay playsinline></video>

	<script>
	document.addEventListener('DOMContentLoaded', async () => {
	const { remote } = require('electron');
	console.log('remote', remote)
	const sourceId = remote.getCurrentWindow().getMediaSourceId();
	const stream = await navigator.mediaDevices.getUserMedia({
	video: {
	mandatory: {
	chromeMediaSource: 'desktop',
	chromeMediaSourceId: sourceId,
	maxWidth: Math.min(screen.width, 1280),
	maxHeight: Math.min(screen.height, 720),
	},
	},
	audio: false,
	});
	const video = document.getElementById('video');
	video.srcObject = stream;
	})
	</script>
	</body>
	</html>
	// Modules to control application life and create native browser window
	const {app, BrowserWindow} = require('electron')
	const path = require('path')
	const contextMenu = require('electron-context-menu')

	contextMenu({
	showInspectElement: true,
	});

	function createWindow () {
	// Create the browser window.
	const mainWindow = new BrowserWindow({
	width: 800,
	height: 600,
	webPreferences: {
	webSecurity: false,
	nodeIntegration: true,
	enableBlinkFeatures: 'OverlayScrollbars',
	enableRemoteModule: true,
	contextIsolation: false,
	backgroundThrottling: false,
	experimentalFeatures: true,
	}
	})

	// and load the index.html of the app.
	mainWindow.loadFile('index.html')

	// Open the DevTools.
	// mainWindow.webContents.openDevTools()
	}

	// This method will be called when Electron has finished
	// initialization and is ready to create browser windows.
	// Some APIs can only be used after this event occurs.
	app.whenReady().then(() => {
	createWindow()

	app.on('activate', function () {
	// On macOS it's common to re-create a window in the app when the
	// dock icon is clicked and there are no other windows open.
	if (BrowserWindow.getAllWindows().length === 0) createWindow()
	})
	})

	// Quit when all windows are closed, except on macOS. There, it's common
	// for applications and their menu bar to stay active until the user quits
	// explicitly with Cmd + Q.
	app.on('window-all-closed', function () {
	if (process.platform !== 'darwin') app.quit()
	})

	// In this file you can include the rest of your app's specific main process
	// code. You can also put them in separate files and require them here.
	// All of the Node.js APIs are available in the preload process.
	// It has the same sandbox as a Chrome extension.
	window.addEventListener('DOMContentLoaded', () => {
	const replaceText = (selector, text) => {
	const element = document.getElementById(selector)
	if (element) element.innerText = text
	}

	for (const type of ['chrome', 'node', 'electron']) {
	replaceText(`${type}-version`, process.versions[type])
	}
	})
	// This file is required by the index.html file and will
	// be executed in the renderer process for that window.
	// No Node.js APIs are available in this process because
	// `nodeIntegration` is turned off. Use `preload.js` to
	// selectively enable features needed in the rendering
	// process.