当“ esc”出现时，退出全屏被按下（使用带电子的javascript） [英] Exit full screen when "esc" is pressed (using javascript with electron)

问题描述

我正在开发一个带有电子的应用程序，我希望用户能够在按 esc时退出全屏模式。我徒劳地尝试了不同的方法。
这是在全屏模式下在新浏览器窗口中启动应用程序并显示和HTML / CSS内容的代码：

I'm working on an app (with electron) and I would like users to be able to exit fullscreen mode when pressing "esc". I tried different methods, in vain. Here is the code who launch the app in a new browser window in fullscreen mode and display and HTML/CSS content :

    'use strict';

const electron = require('electron');
// Module to control application life.
const app = electron.app;
// Module to create native browser window.
const BrowserWindow = electron.BrowserWindow;

// 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;

function createWindow () {
  // Create the browser window.
  mainWindow = new BrowserWindow({fullscreen:true});

  // and load the index.html of the app.
  mainWindow.loadURL('file://' + __dirname + '/index.html');

  // 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;
  });
}

// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
app.on('ready', createWindow);

// 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();
  }
});

这是我想添加到此代码中的内容，以便能够退出全屏显示，但是它不起作用：

And here is what I'm trying to add to this code to be able to exit full screen but it doesn't work :

app.on('keydown', function(e){
    if(e.keyCode === 27){
      app.exitFullscreen();
    }
});

我也尝试过使用 cancelFullscreen。和全屏：假。不能正常工作。

I also tried with "cancelFullscreen". And "fullscreen:false". Not working.

非常感谢您的关注！

推荐答案

这很容易。在渲染过程中添加键盘侦听器，然后通过远程模块操作窗口。

It's quite easy. Add a keyboard listener in render process, and then manipulate the window through the remote module.

    const remote = require("electron").remote;

    document.addEventListener("keydown", event => {

        switch (event.key) {
            case "Escape":
                if (remote.getCurrentWindow().isFullScreen()) {
                    remote.getCurrentWindow().setFullScreen(false);
                }
                break;
             }
    });

这篇关于当“ esc”出现时，退出全屏被按下（使用带电子的javascript）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！