buWenXin/index.html Secret

## 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'; style-src 'self' 'unsafe-inline'">
  <link href="./styles.css" rel="stylesheet">
  <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>.
    <div>
      <button id="print">print</button>
    </div>
    <!-- You can also require other files to run in this process -->
    <script src="./renderer.js"></script>
  </body>
</html>

## main.js
// Modules to control application life and create native browser window
const { app, BrowserWindow,ipcMain,dialog } = require('electron')
const path = require('path')
const fs = require("fs");
const crypto = require("crypto");

function createWindow () {
  // Create the browser window.
  const mainWindow = new BrowserWindow({
    width: 800,
    height: 600,
    webPreferences: {
      preload: path.join(__dirname, 'preload.js')
    }
  })

  // 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()

  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()
})

// 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.


//print
ipcMain.handle("myPrint",async(event,htmlStr,width,height)=>{

  const uuid = crypto.randomUUID()

    let htmlString = `
   <!DOCTYPE html>
   <html lang="en">
   <head>
       <meta charset="UTF-8">
       <title>打印</title>
       <style>
           @page {
               size: ${width}mm ${height}mm;
               margin: 0;
           }
           * {
               margin: 0;
               padding: 0;
           }
           body{
              font-family: 黑体,微软雅黑,serif;
           }
       </style>
   </head>
   <body>
   ${htmlStr}
   </body>
   </html>`

      let directoryPath = createDirectoryPath();

   if (directoryPath == null) {
      dialog.showMessageBoxSync({
         title: 'error',
         message: "文件夹创建失败"
      })
   }


   let paths = path.join(directoryPath, `${uuid}-print.html`)
   try {
      fs.writeFileSync(paths, htmlString)
   } catch (e) {
      dialog.showMessageBoxSync({
         title: 'error',
         message: "html创建错误"
      })
   }

   console.log(paths)

   //-----------------------------------------执行打印
  const win = new BrowserWindow({
      //控制页面是否显示
      show: false,
  })

  await win.loadFile(paths);

  //打印配置
  await win.webContents.print({
      silent: true,
      printBackground: true,
      deviceName: "pdfFactory Pro",
      margins: {
         marginType: "none"
      },
      //attribute invalid!
      pageSize: {
         width: width * 1000,
         height: height * 1000
      },
   })

   fs.unlink(paths, (err => {
   }))
})


/**
 * 创建文件夹
 * @return {string|null} 文件夹路径
 */
function createDirectoryPath() {
   let leaPath = ""
   try {
      const directoryPath = path.join(process.cwd(), "PDF");
      if (!fs.existsSync(directoryPath)) {
         fs.mkdirSync(directoryPath);
      }
      leaPath = directoryPath;
   } catch (e) {
      dialog.showMessageBoxSync({
         title: '错误',
         message: "文件夹创建错误"
      })
      return null;
   }
   return leaPath;
}

## package.json
{
  "name": "irritating-poem-review-mrxo6",
  "productName": "irritating-poem-review-mrxo6",
  "description": "My Electron application description",
  "keywords": [],
  "main": "./main.js",
  "version": "1.0.0",
  "author": "Administrator",
  "scripts": {
    "start": "electron ."
  },
  "dependencies": {},
  "devDependencies": {
    "electron": "22.3.21"
  }
}

## preload.js
/**
 * The preload script runs before. 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])
  }
})

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

// 向window中注入数据
contextBridge.exposeInMainWorld('mainApi', {
   myPrint: (htmlStr,width,height) => ipcRenderer.invoke("myPrint", htmlStr,width,height)
})

## renderer.js
/**
 * 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.
 */
  const button = document.getElementById("print");

   button.addEventListener("click", () => {
      let htmlStr = `<div style="width: 50mm;height: 29.5mm;box-sizing: border-box;border: 1px solid black;font-size: 10pt">
    <div>66666</div>
    <div>6666677777</div>
    <div>88888</div>
    </div>`
      window.mainApi.myPrint(htmlStr, 50, 30)
   })

## styles.css
/* styles.css */

/* Add styles here to customize the appearance of your app */
	<!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'; style-src 'self' 'unsafe-inline'">
	<link href="./styles.css" rel="stylesheet">
	<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>.
	<div>
	<button id="print">print</button>
	</div>
	<!-- You can also require other files to run in this process -->
	<script src="./renderer.js"></script>
	</body>
	</html>
	// Modules to control application life and create native browser window
	const { app, BrowserWindow,ipcMain,dialog } = require('electron')
	const path = require('path')
	const fs = require("fs");
	const crypto = require("crypto");

	function createWindow () {
	// Create the browser window.
	const mainWindow = new BrowserWindow({
	width: 800,
	height: 600,
	webPreferences: {
	preload: path.join(__dirname, 'preload.js')
	}
	})

	// 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()

	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()
	})

	// 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.


	//print
	ipcMain.handle("myPrint",async(event,htmlStr,width,height)=>{

	const uuid = crypto.randomUUID()

	let htmlString = `
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<title>打印</title>
	<style>
	@page {
	size: ${width}mm ${height}mm;
	margin: 0;
	}
	* {
	margin: 0;
	padding: 0;
	}
	body{
	font-family: 黑体,微软雅黑,serif;
	}
	</style>
	</head>
	<body>
	${htmlStr}
	</body>
	</html>`

	let directoryPath = createDirectoryPath();

	if (directoryPath == null) {
	dialog.showMessageBoxSync({
	title: 'error',
	message: "文件夹创建失败"
	})
	}


	let paths = path.join(directoryPath, `${uuid}-print.html`)
	try {
	fs.writeFileSync(paths, htmlString)
	} catch (e) {
	dialog.showMessageBoxSync({
	title: 'error',
	message: "html创建错误"
	})
	}

	console.log(paths)

	//-----------------------------------------执行打印
	const win = new BrowserWindow({
	//控制页面是否显示
	show: false,
	})

	await win.loadFile(paths);

	//打印配置
	await win.webContents.print({
	silent: true,
	printBackground: true,
	deviceName: "pdfFactory Pro",
	margins: {
	marginType: "none"
	},
	//attribute invalid!
	pageSize: {
	width: width * 1000,
	height: height * 1000
	},
	})

	fs.unlink(paths, (err => {
	}))
	})



	/**
	* 创建文件夹
	* @return {string\|null} 文件夹路径
	*/
	function createDirectoryPath() {
	let leaPath = ""
	try {
	const directoryPath = path.join(process.cwd(), "PDF");
	if (!fs.existsSync(directoryPath)) {
	fs.mkdirSync(directoryPath);
	}
	leaPath = directoryPath;
	} catch (e) {
	dialog.showMessageBoxSync({
	title: '错误',
	message: "文件夹创建错误"
	})
	return null;
	}
	return leaPath;
	}
	{
	"name": "irritating-poem-review-mrxo6",
	"productName": "irritating-poem-review-mrxo6",
	"description": "My Electron application description",
	"keywords": [],
	"main": "./main.js",
	"version": "1.0.0",
	"author": "Administrator",
	"scripts": {
	"start": "electron ."
	},
	"dependencies": {},
	"devDependencies": {
	"electron": "22.3.21"
	}
	}
	/**
	* The preload script runs before. 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])
	}
	})

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

	// 向window中注入数据
	contextBridge.exposeInMainWorld('mainApi', {
	myPrint: (htmlStr,width,height) => ipcRenderer.invoke("myPrint", htmlStr,width,height)
	})
	/**
	* 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.
	*/
	const button = document.getElementById("print");

	button.addEventListener("click", () => {
	let htmlStr = `<div style="width: 50mm;height: 29.5mm;box-sizing: border-box;border: 1px solid black;font-size: 10pt">
	<div>66666</div>
	<div>6666677777</div>
	<div>88888</div>
	</div>`
	window.mainApi.myPrint(htmlStr, 50, 30)
	})
	/* styles.css */

	/* Add styles here to customize the appearance of your app */