import 'dart:typed_data'; import 'package:bluetooth_print_plus/bluetooth_print_plus.dart'; Future printLabelTest({ required String productName, required String price, required String date, required String barcodeData, required Uint8List pngBytes, required bool isTwoInch, }) async { TscCommand tscCommand = TscCommand(); await tscCommand.cleanCommand(); await tscCommand.size(width: isTwoInch ? 45 : 38, height: 25); // mm await tscCommand.gap(2); await tscCommand.cls(); await tscCommand.image(image: pngBytes, x: 0, y: 0); await tscCommand.print(1); final cmd = await tscCommand.getCommand(); BluetoothPrintPlus.write(cmd); } String centerText(String text, {int lineWidth = 24}) { if (text.length >= lineWidth) return text; int totalPadding = lineWidth - text.length; int leftPadding = totalPadding ~/ 2; // only add left padding return ' ' * leftPadding + text; }