调试打印

electron/main.js

@@ -7,9 +7,9 @@ app.whenReady().then(() => {
     width: 1200,
     height: 800,
     fullscreenable: true,
-    fullscreen: false,
+    fullscreen: true,
     simpleFullscreen: true,
-    frame: true,
+    frame: false,
     webPreferences: {
       // 集成网页和 Node.js，也就是在渲染进程中，可以调用 Node.js 方法
       nodeIntegration: true,
@@ -24,7 +24,7 @@ app.whenReady().then(() => {
     // Load your file
     win.loadFile("dist/index.html");
   }
-  win.webContents.openDevTools();
+  // win.webContents.openDevTools();
   app.on("activate", () => {
     // 在 macOS 系统内, 如果没有已开启的应用窗口
     // 点击托盘图标时通常会重新创建一个新窗口
@@ -38,10 +38,7 @@ app.whenReady().then(() => {
   });
 
   ipcMain.on('printerInfoSync', async (event, params) => {
-    console.log('接收到打印消息', params)
-    const res = await printUtils(params)
-    event.returnValue = res
-    console.log('已打印', res)
+    await printUtils(params)
   })
 });
 

electron/printUtils.js

@@ -1,12 +1,10 @@
 import { BrowserWindow, ipcMain } from 'electron';
 import path from "path";
 
-
-export function printUtils(data) {
+export function printUtils(params) {
     return new Promise(async (resolvePrint, rejectPrint) => {
-
         let subMainWindow = new BrowserWindow({
-            show: false,
+            // show: false,
             webPreferences: {
                 nodeIntegration: true,        // For electron >= 4.0.0
                 contextIsolation: false,
@@ -15,26 +13,14 @@ export function printUtils(data) {
             }
         });
 
-        function renderPrintDocument(window, data) {
-            return new Promise(async (resolve, reject) => {
-                ipcMain.on('load-ok', (event, res) => {
-                    //在这里可以添加打印的判断条件等......
-                    setTimeout(() => {
-                        resolve({ message: 'page-rendered', ...res });
-                    }, 500)
-                })
-            })
-        }
-
-
-        // If the subMainWindow is closed, reset the `subMainWindow` var to null
-        subMainWindow.on('closed', () => {
-            subMainWindow = null;
-        });
         // 加载打印的html文件
-        subMainWindow.loadFile(path.resolve(__dirname, "./public/print.html"));
+        subMainWindow.loadFile(path.join(__dirname, "../public/print.html"));
 
         subMainWindow.webContents.on('did-finish-load', async (res) => {
+            subMainWindow.webContents.openDevTools();
+            console.log('网页加载完成', res)
+            subMainWindow.webContents.send('getParams', params)
+            return
             let data = []
             return renderPrintDocument(subMainWindow, data)
                 .then(async (result) => {
@@ -47,10 +33,9 @@ export function printUtils(data) {
                             marginType: 'none'
                         },
                         printBackground: false,
-                        deviceName: options.printerName,
+                        deviceName: '',
                         copies: 1,
                     }, (success) => {
-
                         if (success) {
                             resolvePrint({ type: 'success' })
                         }
@@ -59,5 +44,11 @@ export function printUtils(data) {
                 })
                 .catch(err => console.warn(33, err))
         })
+        ipcMain.on('printStart', () => {
+            console.log('开始打印')
+            subMainWindow.webContents.print({
+                silent: true
+            })
+        })
     })
 }