Electron：渲染器进程到主进程（单向）

【ipcRenderer.send】API发送消息，之后使用【ipcMain.on】API接收
从Web内容调用主进程API

主进程监听main.js =》 ipcMain.on()
预加载脚本暴露ipcRenderer.send() ====》需要使用 contextBridge API 来选择要从预加载脚本中暴露哪些 API。
构建渲染器进程UI

* main.js

 const { app, BrowserWindow, ipcMain } = require('electron/main')
const path = require('node:path')
 
function createWindow () {
  const mainWindow = new BrowserWindow({
    webPreferences: {
      preload: path.join(__dirname, 'preload.js')
    }
  })
 
  ipcMain.on('set-title', (event, title) => {
    const webContents = event.sender
    const win = BrowserWindow.fromWebContents(webContents)
    win.setTitle(title)
  })
 
  mainWindow.loadFile('index.html')
}
 
app.whenReady().then(() => {
  createWindow()
 
  app.on('activate', function () {
    if (BrowserWindow.getAllWindows().length === 0) createWindow()
  })
})
 
app.on('window-all-closed', function () {
  if (process.platform !== 'darwin') app.quit()
})

preload.js

 const { contextBridge, ipcRenderer } = require('electron/renderer')
 
contextBridge.exposeInMainWorld('electronAPI', {
  setTitle: (title) => ipcRenderer.send('set-title', title)
})

index.html

 <!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>
    Title: <input id="title"/>
    <button id="btn" type="button">Set</button>
    <script src="./renderer.js"></script>
  </body>
</html>

renderer.js

 const setButton = document.getElementById('btn')
const titleInput = document.getElementById('title')
setButton.addEventListener('click', () => {
  const title = titleInput.value
  window.electronAPI.setTitle(title)
})

posted @ 2024-11-04 17:41 Felix_Openmind 阅读(33) 评论(0) 编辑收藏举报

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相关博文：

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Electron：渲染器进程到主进程（单向）

* main.js

preload.js

index.html

renderer.js

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阅读排行榜

	const { app, BrowserWindow, ipcMain } = require('electron/main')
	const path = require('node:path')

	function createWindow () {
	const mainWindow = new BrowserWindow({
	webPreferences: {
	preload: path.join(__dirname, 'preload.js')
	}
	})

	ipcMain.on('set-title', (event, title) => {
	const webContents = event.sender
	const win = BrowserWindow.fromWebContents(webContents)
	win.setTitle(title)
	})

	mainWindow.loadFile('index.html')
	}

	app.whenReady().then(() => {
	createWindow()

	app.on('activate', function () {
	if (BrowserWindow.getAllWindows().length === 0) createWindow()
	})
	})

	app.on('window-all-closed', function () {
	if (process.platform !== 'darwin') app.quit()
	})

	const { contextBridge, ipcRenderer } = require('electron/renderer')

	contextBridge.exposeInMainWorld('electronAPI', {
	setTitle: (title) => ipcRenderer.send('set-title', title)
	})

	<!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>
	Title: <input id="title"/>
	<button id="btn" type="button">Set</button>
	<script src="./renderer.js"></script>
	</body>
	</html>

	const setButton = document.getElementById('btn')
	const titleInput = document.getElementById('title')
	setButton.addEventListener('click', () => {
	const title = titleInput.value
	window.electronAPI.setTitle(title)
	})