优化打印效果

dist-electron/main.js

@@ -1,38 +1,11 @@
 "use strict";
 const electron = require("electron");
 const path = require("path");
-function printUtils(params) {
-  return new Promise(async (resolvePrint, rejectPrint) => {
-    let subMainWindow = new electron.BrowserWindow({
-      // show: false,
-      webPreferences: {
-        nodeIntegration: true,
-        // For electron >= 4.0.0
-        contextIsolation: false,
-        webSecurity: false,
-        enableRemoteModule: true
-      }
-    });
-    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;
-    });
-    electron.ipcMain.on("printStart", () => {
-      console.log("开始打印");
-      subMainWindow.webContents.print({
-        silent: true
-      });
-    });
-  });
-}
 electron.app.whenReady().then(() => {
   const win = new electron.BrowserWindow({
     title: "银收客",
-    width: 1200,
-    height: 800,
+    width: 1024,
+    height: 768,
     fullscreenable: true,
     fullscreen: false,
     simpleFullscreen: true,
@@ -48,7 +21,6 @@ electron.app.whenReady().then(() => {
   } else {
     win.loadFile(path.resolve(__dirname, "../dist/index.html"));
   }
-  win.webContents.openDevTools();
   electron.app.on("activate", () => {
     if (electron.BrowserWindow.getAllWindows().length === 0) {
       createWindow();
@@ -57,8 +29,29 @@ electron.app.whenReady().then(() => {
   electron.ipcMain.on("quitHandler", (_, msg) => {
     electron.app.quit();
   });
-  electron.ipcMain.on("printerInfoSync", async (event, params) => {
-    await printUtils(params);
+  const printWin = new electron.BrowserWindow({
+    show: 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,
+      contextIsolation: false
+    }
+  });
+  if (process.env.VITE_DEV_SERVER_URL) {
+    printWin.loadFile(path.join(__dirname, "../public/print.html"));
+  } else {
+    printWin.loadFile(path.resolve(__dirname, "../dist/print.html"));
+  }
+  printWin.webContents.openDevTools();
+  electron.ipcMain.on("printerInfoSync", (event, params) => {
+    console.log(JSON.parse(params));
+    printWin.webContents.send("getParams", params);
+  });
+  electron.ipcMain.on("printStart", () => {
+    console.log("开始打印");
+    printWin.webContents.print({
+      silent: true
+    });
   });
 });
 electron.app.on("window-all-closed", () => {