main.js

const { app, BrowserWindow, globalShortcut } = require('electron')

let win;

function createWindow () {
  win = new BrowserWindow({
    width: 250,
    height: 250,
    // resizable:true,
    alwaysOnTop: true,
    maximizable:false,
    frame: false,
    transparent: true,
    autoHideMenuBar: true,
    icon: __dirname +'/rounded-cam-icon.ico',
    webPreferences: {
      nodeIntegration: true
    }
  });

  //Always on top even in full screen apps (like powerpoint presentation)
  win.setAlwaysOnTop(true, "screen-saver");


  win.loadFile('src/index.html');
  win.setAutoHideMenuBar(true);

  // Emitted when the window is closed.
  win.on('closed', function () {
    // Dereference the window object, usually you would store windows
    // in an array if your app supports multi windows, this is the time
    // when you should delete the corresponding element.
    mainWindow = null;
  });
}

let big = false;

app.whenReady().then(() => {
  globalShortcut.register('Alt+CommandOrControl+1', () => {
    if (big) {
      win.setSize(250,250);
      big = false;
      
    } else {
      win.setSize(640,640);
      big = true;
    }
  })
}).then(createWindow)

app.on('window-all-closed', () => {
  if (process.platform !== 'darwin') {
    app.quit()
  }
})