Imperat/index.html

## index.html
<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <!-- https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP -->
    <meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'">
    <link href="./styles.css" rel="stylesheet">
    <title>Hello World!</title>
  </head>
  <body>
    <h1>Hello World!</h1>
    We are using Node.js <span id="node-version"></span>,
    Chromium <span id="chrome-version"></span>,
    and Electron <span id="electron-version"></span>.

    <button id="btn">Click me</button>
    <div id="output">

    </div>

    <!-- You can also require other files to run in this process -->
    <script src="./renderer.js"></script>
  </body>
</html>

## index2.html
<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <!-- https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP -->
    <meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'">
    <link href="./styles.css" rel="stylesheet">
    <title>Hello World!</title>
  </head>
  <body class="second">
    <div style="width: 100%; background: blue;">title</div>
    <!-- You can also require other files to run in this process -->
    <script src="./renderer.js"></script>
  </body>
</html>

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

const TITLE_BAR_HEIGHT = 35;

function createWindow () {
  const browserWindow = new BrowserWindow({
    width: 800,
    height: 600,
    titleBarStyle: 'hidden',
    titleBarOverlay: true,
    webPreferences: {
      preload: path.join(__dirname, 'preload.js'),
    }
  });
  browserWindow.loadURL('about:blank');
  Menu.setApplicationMenu(null);

  const browserViewContent = new BrowserView();
  browserWindow.addBrowserView(browserViewContent);
  const windowContentBounds = browserWindow.getContentBounds();
  browserViewContent.setBounds({
    x: 0,
    y: TITLE_BAR_HEIGHT,
    width: windowContentBounds.width,
    height: windowContentBounds.height - TITLE_BAR_HEIGHT
  });
  browserViewContent.setAutoResize({ width: true, height: true });


  const browserViewTitleBar = new BrowserView();
  browserViewTitleBar.webContents.loadFile('index2.html');
  browserViewTitleBar.setBounds({ x: 0, y: 0, width: windowContentBounds.width, height: windowContentBounds.width });
  browserViewTitleBar.setAutoResize({ width: true, height: true });
  browserWindow.addBrowserView(browserViewTitleBar);
  browserWindow.setTopBrowserView(browserViewContent);

  browserViewContent.webContents.loadFile('index.html');
  browserViewContent.webContents.openDevTools();

  browserViewContent.webContents.on('enter-html-full-screen', () => {
    browserWindow.addBrowserView(browserViewContent);
    const { width, height } = browserWindow.getContentBounds();
    browserViewContent.setBounds({ x: 0, y: 0, width, height });
  });
}

// 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()
})

// 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 () {
  app.quit();
})

## package.json
{
  "name": "fine-increase-whisper-94x8v",
  "productName": "fine-increase-whisper-94x8v",
  "description": "My Electron application description",
  "keywords": [],
  "main": "./main.js",
  "version": "1.0.0",
  "author": "Mikhail",
  "scripts": {
    "start": "electron ."
  },
  "dependencies": {},
  "devDependencies": {
    "electron": "26.6.2"
  }
}

## preload.js
/**
 * The preload script runs before. It has access to web APIs
 * as well as Electron's renderer process modules and some
 * polyfilled Node.js functions.
 *
 * https://www.electronjs.org/docs/latest/tutorial/sandbox
 */
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
const btn = document.getElementById('btn');
const output = document.getElementById('output');

let isFullScreen = false;
btn.addEventListener('click', () => {
    if (isFullScreen) {
        isFullScreen = false;
        document.body.exitFullscreen();
        return;
    }
    isFullScreen = true;
    btn.requestFullscreen();
});

window.addEventListener('mousemove', (e) => {
    btn.innerText = `x: ${e.clientX}, y: ${e.clientY}`;
});

## styles.css
/* styles.css */

/* Add styles here to customize the appearance of your app */

body {
    background: orange;
}

body.second {
    background: green;
    -webkit-app-region: drag;
}
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="UTF-8">
	<!-- https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP -->
	<meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'">
	<link href="./styles.css" rel="stylesheet">
	<title>Hello World!</title>
	</head>
	<body>
	<h1>Hello World!</h1>
	We are using Node.js <span id="node-version"></span>,
	Chromium <span id="chrome-version"></span>,
	and Electron <span id="electron-version"></span>.

	<button id="btn">Click me</button>
	<div id="output">

	</div>

	<!-- You can also require other files to run in this process -->
	<script src="./renderer.js"></script>
	</body>
	</html>
	// Modules to control application life and create native browser window
	const { app, BrowserWindow, BrowserView, Menu } = require('electron')
	const path = require('path')

	const TITLE_BAR_HEIGHT = 35;

	function createWindow () {
	const browserWindow = new BrowserWindow({
	width: 800,
	height: 600,
	titleBarStyle: 'hidden',
	titleBarOverlay: true,
	webPreferences: {
	preload: path.join(__dirname, 'preload.js'),
	}
	});
	browserWindow.loadURL('about:blank');
	Menu.setApplicationMenu(null);

	const browserViewContent = new BrowserView();
	browserWindow.addBrowserView(browserViewContent);
	const windowContentBounds = browserWindow.getContentBounds();
	browserViewContent.setBounds({
	x: 0,
	y: TITLE_BAR_HEIGHT,
	width: windowContentBounds.width,
	height: windowContentBounds.height - TITLE_BAR_HEIGHT
	});
	browserViewContent.setAutoResize({ width: true, height: true });


	const browserViewTitleBar = new BrowserView();
	browserViewTitleBar.webContents.loadFile('index2.html');
	browserViewTitleBar.setBounds({ x: 0, y: 0, width: windowContentBounds.width, height: windowContentBounds.width });
	browserViewTitleBar.setAutoResize({ width: true, height: true });
	browserWindow.addBrowserView(browserViewTitleBar);
	browserWindow.setTopBrowserView(browserViewContent);

	browserViewContent.webContents.loadFile('index.html');
	browserViewContent.webContents.openDevTools();

	browserViewContent.webContents.on('enter-html-full-screen', () => {
	browserWindow.addBrowserView(browserViewContent);
	const { width, height } = browserWindow.getContentBounds();
	browserViewContent.setBounds({ x: 0, y: 0, width, height });
	});
	}

	// 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()
	})

	// 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 () {
	app.quit();
	})
	{
	"name": "fine-increase-whisper-94x8v",
	"productName": "fine-increase-whisper-94x8v",
	"description": "My Electron application description",
	"keywords": [],
	"main": "./main.js",
	"version": "1.0.0",
	"author": "Mikhail",
	"scripts": {
	"start": "electron ."
	},
	"dependencies": {},
	"devDependencies": {
	"electron": "26.6.2"
	}
	}
	/**
	* The preload script runs before. It has access to web APIs
	* as well as Electron's renderer process modules and some
	* polyfilled Node.js functions.
	*
	* https://www.electronjs.org/docs/latest/tutorial/sandbox
	*/
	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])
	}
	})
	const btn = document.getElementById('btn');
	const output = document.getElementById('output');

	let isFullScreen = false;
	btn.addEventListener('click', () => {
	if (isFullScreen) {
	isFullScreen = false;
	document.body.exitFullscreen();
	return;
	}
	isFullScreen = true;
	btn.requestFullscreen();
	});

	window.addEventListener('mousemove', (e) => {
	btn.innerText = `x: ${e.clientX}, y: ${e.clientY}`;
	});
	/* styles.css */

	/* Add styles here to customize the appearance of your app */

	body {
	background: orange;
	}

	body.second {
	background: green;
	-webkit-app-region: drag;
	}