main.js

const {app, BrowserWindow, ipcMain, Tray, powerSaveBlocker} = require('electron')
const path = require('path')
const url = require('url')

app.dock.hide()

// Turn off throttling (move to inside function)
powerSaveBlocker.start('prevent-app-suspension')

// Keep a global reference of the window object, if you don't, the window will
// be closed automatically when the JavaScript object is garbage collected.
let mainWindow, tray

function createWindow () {
  // Create the browser window.
  mainWindow = new BrowserWindow({
    width: 360,
    height: 430,
    show: false,
    frame: false,
    resizable: false
  })

  // and load the index.html of the app.
  mainWindow.loadURL(url.format({
    pathname: path.join(__dirname, 'index.html'),
    protocol: 'file:',
    slashes: true
  }))

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

  // Emitted when the window is closed.
  mainWindow.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
  })

  // Only close the window on blur if dev tools isn't opened
}

// 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.on('ready', () => {
  // Get icons
  let icon = app.getAppPath() + '/shape.png'
  tray = new Tray(icon)

  // Add a click handler so that when the user clicks on the menubar icon, it shows
  // our popup window
  tray.on('click', function (event) {
    toggleWindow()

    // Show devtools when command clicked
    if (mainWindow.isVisible() && process.defaultApp && event.metaKey) {
      mainWindow.openDevTools({mode: 'detach'})
    }
  })

  // Create the browser window.
  mainWindow = new BrowserWindow({
    width: 360,
    height: 300,
    show: false,
    frame: false,
    resizable: false
  })

  // and load the index.html of the app.
  mainWindow.loadURL(url.format({
    pathname: path.join(__dirname, 'index.html'),
    protocol: 'file:',
    slashes: true
  }))

  mainWindow.on('blur', () => {
    if (!mainWindow.webContents.isDevToolsOpened()) {
      mainWindow.hide()
    }
  })
})

const toggleWindow = () => {
  if (mainWindow.isVisible()) {
    mainWindow.hide()
  } else {
    showWindow()
  }
}

const showWindow = () => {
  const trayPos = tray.getBounds()
  const windowPos = mainWindow.getBounds()
  let x, y
  y = 0
  if (process.platform === 'darwin') {
    x = Math.round(trayPos.x + (trayPos.width / 2) - (windowPos.width / 2))
    y = Math.round(trayPos.y + trayPos.height)
  } else {
    x = Math.round(trayPos.x + (trayPos.width / 2) - (windowPos.width / 2))
    y = Math.round(trayPos.y + trayPos.height * 10)
  }

  mainWindow.setPosition(x, y, false)
  mainWindow.show()
  mainWindow.focus()
}

ipcMain.on('show-window', () => {
  showWindow()
})

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

app.on('activate', function () {
  // On OS X 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 (mainWindow === null) {
    createWindow()
  }
})