上文《使用 VS2017 和 js 进行桌面程序开发 - electron 之 Hello Word》介绍了如何使用 VS2017 开发 electron 桌面程序，今天来点有看头的，但是没什么技术含量，囧~~
现在什么都讲究追赶潮流，觉得 QQ 登录窗口做的效果不错，既然刚学习 electron ，那么就用 electron 模仿一下。其实主要用到的就是 CSS3 的效果：边框圆角、阴影，3D变换。对，，就这么简单。先上效果：
下面是关键代码：
app.js
‘use strict‘; const { app, BrowserWindow } = require(‘electron‘) const path = require(‘path‘) const url = require(‘url‘) // 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 win function createWindow() { // Create the browser window. win = new BrowserWindow({ width: 495, height: 470, /*skipTaskbar: true,*/ frame: false, resizable: false, transparent: true, show: false, alwaysOnTop: true }) win.once(‘ready-to-show‘, () => { win.show() }) // and load the index.html of the app. win.loadURL(url.format({ pathname: path.join(__dirname, ‘/app/index.html‘), protocol: ‘file:‘, slashes: true })) // Open the DevTools. //win.webContents.openDevTools() // Emitted when the window is closed. win.on(‘closed‘, () => { // 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. win = null }) } //app.disableHardwareAcceleration(); // 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‘, createWindow) // Quit when all windows are closed. app.on(‘window-all-closed‘, () => { // On macOS 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‘, () => { // 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 (win === null) { createWindow() } }) // 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.
index.html
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>QQ Login</title> <style> html, body { margin: 0; padding: 0; width: 100%; height: 100%; } body { perspective: 800px; -webkit-app-region: drag; -webkit-user-select: none; } input[type="submit"], input[type="reset"], input[type="button"], input[type="text"], button, textarea { -webkit-app-region: no-drag; } .shadow { box-shadow: 0 0 10px rgba(0, 0, 0, 1); position: absolute; width: 100%; height: 100%; border-radius: 4px; } #login-back { position: relative; border-radius: 3px 3px 0 0; left: 0; right: 0; height: 180px; } #card { left: 33px; top: 70px; right: 33px; bottom: 70px; background-color: #ebf2f9; position: absolute; -webkit-transition: -webkit-transform .6s ease-in-out; transition: transform .6s ease-in-out; -webkit-transform-style: preserve-3d; transform-style: preserve-3d; border-radius: 4px; } #card.flipped { -webkit-transform: rotateY( 180deg ); transform: rotateY( 180deg ); } #card .front { background: url(imgs/login-back.gif) no-repeat; background-size: 100% 180px; position: absolute; transform: rotateY(0deg); } #card .back { position: absolute; background: url(imgs/login-back.gif) no-repeat; background-size: 100% 180px; -webkit-transform: rotateY( -180deg ); transform: rotateY( -180deg ); -webkit-backface-visibility: hidden; backface-visibility: hidden; z-index:2; } .sys-control-box { float:right; width:84px; border-radius: 0 3px 0 0; } .sys-btn { width: 28px; height: 28px; border: none; outline: none; margin: 0; } .sys-btn-mini { background: url(imgs/btn_mini_normal.png) no-repeat; } .sys-btn-mini:hover { background: url(imgs/btn_mini_highlight.png) no-repeat; } .sys-btn-mini:active { background: url(imgs/btn_mini_down.png) no-repeat; } .sys-btn-close { border-radius: 0 3px 0 0; background: url(imgs/btn_close_normal.png) no-repeat; } .sys-btn-close:hover { background: url(imgs/btn_close_highlight.png) no-repeat; } .sys-btn-close:active { background: url(imgs/btn_close_down.png) no-repeat; } .sys-btn-set { background: url(imgs/btn_set_normal.png) 1px 0 no-repeat; } .sys-btn-set:hover { background: url(imgs/btn_set_hover.png) 1px 0 no-repeat; } .sys-btn-set:active { background: url(imgs/btn_set_press.png) 1px 0 no-repeat; } .btn { width: 78px; height: 28px; background: url(imgs/setting_btn_normal.png) no-repeat; background-size: 100% 100%; border: none; outline: none; margin: 0; } .btn:hover, .btn:active { background: url(imgs/setting_btn_hover.png) no-repeat; background-size: 100% 100%; } .btn:focus { background: url(imgs/setting_btn_hover.png) no-repeat; background-size: 100% 100%; } </style> </head> <body> <div> <div> <div> <button title="设置"></button><button title="最小化"></button><button title="关闭"></button> </div> </div> <div> <div> <div> <button title="最小化"></button><button title="关闭"></button> </div> <button>确定</button> <button>取消</button> </div> </div> </div> <script> Element.prototype.hasClassName = function (a) { return new RegExp("(?:^|\\s+)" + a + "(?:\\s+|$)").test(this.className); }; Element.prototype.addClassName = function (a) { if (!this.hasClassName(a)) { this.className = [this.className, a].join(" "); } }; Element.prototype.removeClassName = function (b) { if (this.hasClassName(b)) { var a = this.className; this.className = a.replace(new RegExp("(?:^|\\s+)" + b + "(?:\\s+|$)", "g"), " "); } }; Element.prototype.toggleClassName = function (a) { this[this.hasClassName(a) ? "removeClassName" : "addClassName"](a); }; //var init = function () { // var card = document.getElementById(‘card‘); // document.getElementById(‘front‘).addEventListener(‘click‘, function () { // card.toggleClassName(‘flipped‘); // }, false); // document.getElementById(‘back‘).addEventListener(‘click‘, function () { // card.toggleClassName(‘flipped‘); // }, false); //}; //window.addEventListener(‘DOMContentLoaded‘, init, false); (function () { const remote = require(‘electron‘).remote; function init() { function flip() { if (frontShow == 2) { document.getElementById(‘front‘).style.display = ‘block‘; } else { document.getElementById(‘back‘).style.display = ‘block‘; } card.toggleClassName(‘flipped‘); }; var btn_minis = document.getElementsByClassName("sys-btn-mini"); for (var i = 0; i < btn_minis.length; i++) { btn_minis[i].addEventListener("click", function (e) { const window = remote.getCurrentWindow(); window.minimize(); }); } //document.getElementById("sys-btn-maxi").addEventListener("click", function (e) { // const window = remote.getCurrentWindow(); // if (!window.isMaximized()) { // window.maximize(); // } else { // window.unmaximize(); // } //}); var btn_closes = document.getElementsByClassName("sys-btn-close"); for (var i = 0; i < btn_closes.length; i++) { btn_closes[i].addEventListener("click", function (e) { const window = remote.getCurrentWindow(); window.close(); }); } var card = document.getElementById(‘card‘); var frontShow = 1; var btn_sets = document.getElementsByClassName("sys-btn-set"); for (var i = 0; i < btn_sets.length; i++) { btn_sets[i].addEventListener(‘click‘, function () { flip(); }, false); } card.addEventListener(‘transitionend‘, function () { if (frontShow == 1) { frontShow = 2; document.getElementById(‘front‘).style.display = ‘none‘; } else { document.getElementById(‘back‘).style.display = ‘none‘; frontShow = 1; } }, false); document.getElementById(‘btn-ok‘).addEventListener(‘click‘, function () { flip(); }, false); document.getElementById(‘btn-cancel‘).addEventListener(‘click‘, function () { flip(); }, false); }; document.onreadystatechange = function () { if (document.readyState == "complete") { init(); } }; })(); </script> </body> </html>
最后整个项目的源代码：https://github.com/starts2000/ElectronQQLogin
使用 electron 实现类似新版 QQ 的登录界面效果（阴影、背景动画、窗体3D翻转）