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Electron with children processes
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| const process = require('process') | |
| process.on('message', ()=> { | |
| console.log('mess') | |
| process.send('ahoy') | |
| setTimeout(() => { | |
| process.send('kill') | |
| }, 3000) | |
| }) |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <!-- https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP --> | |
| <meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self'"> | |
| <title>Hello World!</title> | |
| </head> | |
| <body> | |
| <h1>Hello World!</h1> | |
| We are using Node.js <span id="node-version"></span>, | |
| Chromium <span id="chrome-version"></span>, | |
| and Electron <span id="electron-version"></span>. | |
| <!-- You can also require other files to run in this process --> | |
| <script src="./renderer.js"></script> | |
| </body> | |
| </html> |
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| // Modules to control application life and create native browser window | |
| const { app, BrowserWindow, MessageChannelMain, utilityProcess, desktopCapturer } = require('electron') | |
| const path = require('node:path') | |
| const { spawn, fork } = require('child_process'); | |
| function spawnScreenshot() { | |
| // const {port1, port2} = new MessageChannelMain() | |
| // const child = utilityProcess.fork(path.join(__dirname, 'main_worker.js'), [], {stdio:['ignore','pipe', 'pipe']}) | |
| // child.postMessage({ message: 'hello' }, [port1]) | |
| // child.stdout.on('data', (data) => { | |
| // console.log(`Received chunk ${data}`) | |
| // }) | |
| // child.stderr.on('data', (data) => { | |
| // console.log(`Received chunk ${data}`) | |
| // }) | |
| const p = spawn(process.execPath, [ path.join(__dirname, 'main_worker.js')], { | |
| stdio: ['inherit', 'pipe', 'pipe', 'ipc'] | |
| }); | |
| p.on('message', (m) => { | |
| console.log('Got message:', m); | |
| }); | |
| p.stdout.on('data', (data) => { | |
| console.log(`Received chunk ${data}`) | |
| // p.kill() | |
| }) | |
| p.stderr.on('data', (data) => { | |
| console.log(`Received eerr ${data}`) | |
| }) | |
| p.send('ouh') | |
| } | |
| function forkChild() { | |
| const q = fork(path.join(__dirname, 'forked.js'),[], { | |
| stdio: ['inherit', 'pipe', 'pipe', 'ipc'] | |
| }); | |
| q.stderr.on('data', (data) => { | |
| console.log(` q err ${data}`) | |
| }) | |
| q.stdout.on('data', (data) => { | |
| console.log(` q out ${data}`) | |
| }) | |
| q.on('message', (e) => { | |
| console.log(`${e}`) | |
| if (e.indexOf('kill') !== -1) { | |
| q.kill() | |
| } | |
| }) | |
| q.send('oo') | |
| } | |
| function createWindow () { | |
| // Create the browser window. | |
| const mainWindow = new BrowserWindow({ | |
| width: 800, | |
| height: 600, | |
| webPreferences: { | |
| preload: path.join(__dirname, 'preload.js'), | |
| nodeIntegrationInWorker: true | |
| } | |
| }) | |
| // and load the index.html of the app. | |
| mainWindow.loadFile('index.html') | |
| // Open the DevTools. | |
| // mainWindow.webContents.openDevTools() | |
| } | |
| // 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.whenReady().then(() => { | |
| createWindow() | |
| console.log('ehllo') | |
| spawnScreenshot() | |
| app.on('activate', function () { | |
| // 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 (BrowserWindow.getAllWindows().length === 0) createWindow() | |
| }) | |
| }) | |
| // Quit when all windows are closed, except on macOS. There, it's common | |
| // for applications and their menu bar to stay active until the user quits | |
| // explicitly with Cmd + Q. | |
| app.on('window-all-closed', function () { | |
| if (process.platform !== 'darwin') app.quit() | |
| }) | |
| console.log('apppsoos') | |
| // 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. |
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| const process = require('process') | |
| const {desktopCapturer, clipboard, nativeImage} = require('electron'); | |
| process.on('message', ()=> { | |
| desktopCapturer.getSources({ | |
| types: ['screen'], | |
| thumbnailSize: {width:1920, height:1080} | |
| }).then(sources => { | |
| console.log('done') | |
| // console.log(sources) | |
| if (sources.length) { | |
| let displaySource = sources[2] | |
| clipboard.writeImage(nativeImage.createFromBuffer(displaySource.thumbnail.toPNG())) | |
| } | |
| }).catch((e) => { | |
| console.log(e) | |
| }) | |
| }) | |
| // process.parentPort.once('message', (e) => { | |
| // console.log('Worker received message:', e) | |
| // // clipboard.writeText('pie') | |
| // // const [port] = e.ports | |
| // }) |
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| { | |
| "name": "actually-volume-swing-r2o4y", | |
| "productName": "actually-volume-swing-r2o4y", | |
| "description": "My Electron application description", | |
| "keywords": [], | |
| "main": "./main.js", | |
| "version": "1.0.0", | |
| "author": "Stephen", | |
| "scripts": { | |
| "start": "electron ." | |
| }, | |
| "dependencies": {}, | |
| "devDependencies": { | |
| "electron": "32.1.1" | |
| } | |
| } |
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| /** | |
| * The preload script runs before `index.html` is loaded | |
| * in the renderer. It has access to web APIs as well as | |
| * Electron's renderer process modules and some polyfilled | |
| * Node.js functions. | |
| * | |
| * https://www.electronjs.org/docs/latest/tutorial/sandbox | |
| */ | |
| window.addEventListener('DOMContentLoaded', () => { | |
| const replaceText = (selector, text) => { | |
| const element = document.getElementById(selector) | |
| if (element) element.innerText = text | |
| } | |
| for (const type of ['chrome', 'node', 'electron']) { | |
| replaceText(`${type}-version`, process.versions[type]) | |
| } | |
| }) |
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| /** | |
| * This file is loaded via the <script> tag in the index.html file and will | |
| * be executed in the renderer process for that window. No Node.js APIs are | |
| * available in this process because `nodeIntegration` is turned off and | |
| * `contextIsolation` is turned on. Use the contextBridge API in `preload.js` | |
| * to expose Node.js functionality from the main process. | |
| */ |
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