本文由小千給大家分享Renderer Process API，首先Renderer API 主要包括 remote、Browser window proxy、desktop Capture

Renderer Process API remote Browser Window Proxy desktop Capture

1、remote (服務端物件)

1.1 index.html

<!DOCTYPE html>

<html>

<head>

<title>Hello World!</title>

</head>

<body>

<h1>Hello World!</h1>

<button type="button" name="button" id="test-button">Fullscreen</button><br>

We are using Node.js <strong><script>document.write( process.versions.node)</script></strong>,

and Electron <strong><script>document.write( process.versions.electron )</script></strong>.

// You can also require other files to run in this process

require('./renderer.js')

</script>

</body>

</html>

1.2 renderer.js

// This file is required by the index.html file and will

// be executed in the renderer process for that window.

// All of the Node.js APIs are available in this process.

const remote = require('electron').remote

const { app, dialog, BrowserWindow } = remote

const button = document.getElementById('test-button')

button.addEventListener('click', e => {

// dialog.showMessageBox({ message: 'Dialog invoked from Renderer process' })

// let secWin = new BrowserWindow({

// width: 400, height: 350

// })

// secWin.loadFile('index.html')

// console.log( remote.getGlobal('myglob') )

// app.quit()

let win = remote.getCurrentWindow()

win.maximize()

})

1.3 main.js

// Modules

const {app, BrowserWindow} = require('electron')

global['myglob'] = 'A var set in main.js'

// 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

// Create a new BrowserWindow when `app` is ready

function createWindow () {

mainWindow = new BrowserWindow({

width: 1000, height: 800,

webPreferences: { nodeIntegration: true }

})

// Load index.html into the new BrowserWindow

mainWindow.loadFile('index.html')

// Open DevTools - Remove for PRODUCTION!

mainWindow.webContents.openDevTools();

// Listen for window being closed

mainWindow.on('closed', () => {

mainWindow = null

})

}

// Electron `app` is ready

app.on('ready', createWindow)

// Quit when all windows are closed - (Not macOS - Darwin)

app.on('window-all-closed', () => {

if (process.platform !== 'darwin') app.quit()

})

// When app icon is clicked and app is running, (macOS) recreate the BrowserWindow

app.on('activate', () => {

if (mainWindow === null) createWindow()

})

2、Browser Window Proxy （瀏覽器視窗代理）

<!DOCTYPE html>

<html>

<head>

<title>Hello World!</title>

</head>

<body>

<h1>Hello World!</h1>

let win

const newWin = () => {

win = window.open(' '_blank', 'width=500,height=450,alwaysOnTop=1')

}

const closeWin = () => {

win.close()

}

const styleWin = () => {

win.eval("document.getElementsByTagName('body')[0].style.fontFamily = 'Comic Sans MS'")

}

</script>

</body>

</html>

3、webFrame

<!DOCTYPE html>

<html>

<head>

<title>Hello World!</title>

</head>

<body>

<h1>Hello World!</h1>

const { webFrame } = require('electron')

const zoomUp = () => {

webFrame.setZoomLevel( webFrame.getZoomLevel() + 1 )

}

const zoomDown = () => {

webFrame.setZoomLevel( webFrame.getZoomLevel() - 1 )

}

const zoomReset = () => {

webFrame.setZoomLevel( 1 )

}

console.log( webFrame.getResourceUsage() )

</script>

</body>

</html>

4、desktopCapturer（桌面快照）

4.1 index.html

<!DOCTYPE html>

<html>

<head>

<title>Hello World!</title>

</head>

<body>

<h1>Hello World!</h1>

<button id="screenshot-button">Get Screenshot</button>

// You can also require other files to run in this process

require('./renderer.js')

</script>

</body>

</html>

4.2 renderer.js

const { desktopCapturer } = require('electron')

document.getElementById('screenshot-button').addEventListener('click', () => {

desktopCapturer.getSources({ types:['window'], thumbnailSize: {width:1920, height:1080} }, (error, sources) => {

console.log(sources)

document.getElementById('screenshot').src = sources[0].thumbnail.toDataURL()

})

希望本文的分享能幫到大家！

web前端技術分享Electron之Renderer Process API

相關文章