对接完毕下单

dist-electron/main.js

@@ -1,5 +1,53 @@
 "use strict";
 const electron = require("electron");
+const path = require("path");
+function printUtils(data) {
+  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
+      }
+    });
+    function renderPrintDocument(window, data2) {
+      return new Promise(async (resolve, reject) => {
+        electron.ipcMain.on("load-ok", (event, res) => {
+          setTimeout(() => {
+            resolve({ message: "page-rendered", ...res });
+          }, 500);
+        });
+      });
+    }
+    subMainWindow.on("closed", () => {
+      subMainWindow = null;
+    });
+    subMainWindow.loadFile(path.resolve(__dirname, "./public/print.html"));
+    subMainWindow.webContents.on("did-finish-load", async (res) => {
+      return renderPrintDocument().then(async (result) => {
+        let height = Math.ceil((result.height + 60) * 264.5833);
+        console.info("height", result, height);
+        subMainWindow.webContents.print({
+          silent: true,
+          margins: {
+            marginType: "none"
+          },
+          printBackground: false,
+          deviceName: options.printerName,
+          copies: 1
+        }, (success) => {
+          if (success) {
+            resolvePrint({ type: "success" });
+          }
+          subMainWindow.close();
+        });
+      }).catch((err) => console.warn(33, err));
+    });
+  });
+}
 electron.app.whenReady().then(() => {
   const win = new electron.BrowserWindow({
     title: "Main window",
@@ -22,13 +70,19 @@ electron.app.whenReady().then(() => {
   }
   win.webContents.openDevTools();
   electron.app.on("activate", () => {
-    if (electron.BrowserWindow.getAllWindows().length === 0)
+    if (electron.BrowserWindow.getAllWindows().length === 0) {
       createWindow();
+    }
   });
   electron.ipcMain.on("quitHandler", (_, msg) => {
-    console.log(msg);
     electron.app.quit();
   });
+  electron.ipcMain.on("printerInfoSync", async (event, params) => {
+    console.log("接收到打印消息", params);
+    const res = await printUtils();
+    event.returnValue = res;
+    console.log("已打印", res);
+  });
 });
 electron.app.on("window-all-closed", () => {
   if (process.platform !== "darwin")