feat: ticket printer

lib/core/function/app_function.dart

@@ -1,5 +1,7 @@
 import 'dart:developer';
+import 'dart:typed_data';
 
+import 'package:barcode_image/barcode_image.dart';
 import 'package:enaklo_pos/core/extensions/string_ext.dart';
 import 'package:enaklo_pos/core/utils/printer_service.dart';
 import 'package:enaklo_pos/data/dataoutputs/print_dataoutputs.dart';
@@ -9,6 +11,8 @@ import 'package:enaklo_pos/data/datasources/settings_local_datasource.dart';
 import 'package:enaklo_pos/data/models/response/order_response_model.dart';
 import 'package:enaklo_pos/presentation/home/models/product_quantity.dart';
 import 'package:flutter/material.dart';
+import 'package:barcode/barcode.dart';
+import 'package:image/image.dart' as img;
 
 Future<void> onPrint(
   BuildContext context, {
@@ -124,3 +128,21 @@ Future<void> onPrintRecipt(
     }
   }
 }
+
+Future<Uint8List> generateBarcodeAsUint8List(String data) async {
+  // 1. Buat barcode instance (code128, qrCode, dll)
+  final barcode = Barcode.code128();
+
+  // 2. Siapkan canvas image dari package `image`
+  final image = img.Image(width: 600, height: 200);
+
+  // 3. Gambar barcode ke canvas menggunakan barcode_image
+  drawBarcode(
+    image,
+    barcode,
+    data,
+  );
+
+  // 4. Encode image ke Uint8List PNG
+  return Uint8List.fromList(img.encodePng(image));
+}