electron-egg/electron/preload/lifecycle.js

'use strict';

const { app: electronApp, screen } = require('electron');
const { logger } = require('ee-core/log');
const { getConfig } = require('ee-core/config');
const { getMainWindow } = require('ee-core/electron');

class Lifecycle {

  /**
   * core app have been loaded
   */
  async ready() {
    logger.info('[lifecycle] ready');
  }

  /**
   * electron app ready
   */
  async electronAppReady() {
    logger.info('[lifecycle] electron-app-ready');

    // When double clicking the icon, display the opened window
    electronApp.on('second-instance', () => {
      const win = getMainWindow();
      if (win.isMinimized()) {
        win.restore();
      }
      win.show();
      win.focus();
    });
  }

  /**
   * main window have been loaded
   */
  async windowReady() {
    logger.info('[lifecycle] window-ready');

    const win = getMainWindow();

    // The window is centered and scaled proportionally
    // Obtain the size information of the main screen, calculate the width and height of the window as a percentage of the screen, 
    // and calculate the coordinates of the upper left corner when the window is centered
    const mainScreen = screen.getPrimaryDisplay();
    const { width, height } = mainScreen.workAreaSize;
    const windowWidth = Math.floor(width * 0.6);
    const windowHeight = Math.floor(height * 0.8);
    const x = Math.floor((width - windowWidth) / 2);
    const y = Math.floor((height - windowHeight) / 2);
    win.setBounds({ x, y, width: windowWidth, height: windowHeight })

    // Delayed loading, no white screen
    const { windowsOption } = getConfig();
    if (windowsOption.show == false) {
      win.once('ready-to-show', () => {
        win.show();
        win.focus();
      })
    }
  }

  /**
   * before app close
   */  
  async beforeClose() {
    logger.info('[lifecycle] before-close');
  }
}
Lifecycle.toString = () => '[class Lifecycle]';

module.exports = {
  Lifecycle
};