调试打印

dist-electron/main.js

@@ -1,10 +1,10 @@
 "use strict";
 const electron = require("electron");
 const path = require("path");
-function printUtils(data) {
+function printUtils(params) {
   return new Promise(async (resolvePrint, rejectPrint) => {
     let subMainWindow = new electron.BrowserWindow({
-      show: false,
+      // show: false,
       webPreferences: {
         nodeIntegration: true,
         // For electron >= 4.0.0
@@ -13,38 +13,18 @@ function printUtils(data) {
         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.loadFile(path.join(__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));
+      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
+      });
     });
   });
 }
@@ -54,9 +34,9 @@ electron.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,
@@ -68,7 +48,6 @@ electron.app.whenReady().then(() => {
   } else {
     win.loadFile("dist/index.html");
   }
-  win.webContents.openDevTools();
   electron.app.on("activate", () => {
     if (electron.BrowserWindow.getAllWindows().length === 0) {
       createWindow();
@@ -78,10 +57,7 @@ electron.app.whenReady().then(() => {
     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);
+    await printUtils(params);
   });
 });
 electron.app.on("window-all-closed", () => {