aman-kassa-flutter/lib/views/settings/printer/PrinterTest.dart

import 'dart:convert';
import 'dart:typed_data';

import 'package:esc_pos_utils/esc_pos_utils.dart';
import 'package:flutter/services.dart';
import 'package:image/image.dart' as Im;

Future<Ticket> testTicket(PaperSize paper) async {
  final Ticket ticket = Ticket(paper);

  //Uint8List encTxt11 = await CharsetConverter.encode("cp866", "Russian: Привет Мир!");
  //ticket.textEncoded(encTxt11, styles: PosStyles(codeTable: PosCodeTable.pc866_2));
  //ticket.textEncoded(encTxt11);

  // ticket.text('Special 1: àÀ', styles: PosStyles(codeTable: PosCodeTable.westEur)); //А
  // ticket.text('Special 1: á'.toUpperCase(), styles: PosStyles(codeTable: PosCodeTable.westEur));// Б
  // ticket.text('Special 1: â', styles: PosStyles(codeTable: PosCodeTable.westEur)); //В
  // ticket.text('Special 1: ã', styles: PosStyles(codeTable: PosCodeTable.westEur));// Г
  // ticket.text('Special 1: äÄ', styles: PosStyles(codeTable: PosCodeTable.westEur)); //Д
  // ticket.text('Special 1: å', styles: PosStyles(codeTable: PosCodeTable.westEur));// Е
  // ticket.text('Special 1: æÆ', styles: PosStyles(codeTable: PosCodeTable.westEur));// Ж
  // ticket.text('Special 1: ç', styles: PosStyles(codeTable: PosCodeTable.westEur));//З
  // ticket.text('Special 1: èÈ', styles: PosStyles(codeTable: PosCodeTable.westEur)); // И
  // ticket.text('Special 1: éÉ', styles: PosStyles(codeTable: PosCodeTable.westEur)); // Й
  // ticket.text('Special 1: ê', styles: PosStyles(codeTable: PosCodeTable.westEur));//К
  // ticket.text('Special 1: ëË', styles: PosStyles(codeTable: PosCodeTable.westEur));  // Л
  // ticket.text('Special 1: ìÌ', styles: PosStyles(codeTable: PosCodeTable.westEur));// M
  // ticket.text('Special 1: íÍ', styles: PosStyles(codeTable: PosCodeTable.westEur)); // Н
  // ticket.text('Special 1: î', styles: PosStyles(codeTable: PosCodeTable.westEur));// О
  // ticket.text('Special 1: ï', styles: PosStyles(codeTable: PosCodeTable.westEur)); // П
  // ticket.text('Special 1: ð', styles: PosStyles(codeTable: PosCodeTable.westEur));// Р
  // ticket.text('Special 1: ñ', styles: PosStyles(codeTable: PosCodeTable.westEur));// С
  // ticket.text('Special 1: ò', styles: PosStyles(codeTable: PosCodeTable.westEur)); // Т
  // ticket.text('Special 1: óÓ', styles: PosStyles(codeTable: PosCodeTable.westEur)); //У
  // ticket.text('Special 1: ô', styles: PosStyles(codeTable: PosCodeTable.westEur));// Ф
  // ticket.text('Special 1: õÕ', styles: PosStyles(codeTable: PosCodeTable.westEur));// Х
  // ticket.text('Special 1: ö', styles: PosStyles(codeTable: PosCodeTable.westEur)); //Ц
  // ticket.text('Special 1: ÷', styles: PosStyles(codeTable: PosCodeTable.westEur)); //Ч
  // ticket.text('Special 1: ø', styles: PosStyles(codeTable: PosCodeTable.westEur));//Ш
  // ticket.text('Special 1: ù', styles: PosStyles(codeTable: PosCodeTable.westEur)); //Щ
  // ticket.text('Special 1: ú', styles: PosStyles(codeTable: PosCodeTable.westEur));//Ъ
  // ticket.text('Special 1: û', styles: PosStyles(codeTable: PosCodeTable.westEur));//Ы
  // ticket.text('Special 1: üÜ', styles: PosStyles(codeTable: PosCodeTable.westEur)); //Ь
  // ticket.text('Special 1: ý', styles: PosStyles(codeTable: PosCodeTable.westEur)); //Э
  // ticket.text('Special 1: þ', styles: PosStyles(codeTable: PosCodeTable.westEur)); // ю
  // ticket.text('Special 1: ÿß', styles: PosStyles(codeTable: PosCodeTable.westEur)); //Я

  // Uint8List encTxt11 = await CharsetConverter.encode("cp866", "Russian: Привет Мир!");
  // //ticket.textEncoded(encTxt11, styles: PosStyles(codeTable: PosCodeTable.pc866_2));
  // ticket.textEncoded(encTxt11);

  ticket.text(
      'Regular: aA bB cC dD eE fF gG hH iI jJ kK lL mM nN oO pP qQ rR sS tT uU vV wW xX yY zZ');
  //ticket.text('Special 1: àÀ èÈ éÉ ûÛ üÜ çÇ ôÔ', styles: PosStyles(codeTable: PosCodeTable.westEur));
  //ticket.text('Special 2: blåbærgrød', styles: PosStyles(codeTable: PosCodeTable.westEur));

  ticket.text('Bold text', styles: PosStyles(bold: true));
  ticket.text('Reverse text', styles: PosStyles(reverse: true));
  ticket.text('Underlined text',
      styles: PosStyles(underline: true), linesAfter: 1);
  ticket.text('Align left', styles: PosStyles(align: PosAlign.left));
  ticket.text('Align center', styles: PosStyles(align: PosAlign.center));
  ticket.text('Align right',
      styles: PosStyles(align: PosAlign.right), linesAfter: 1);

  ticket.row([
    PosColumn(
      text: 'col3',
      width: 3,
      styles: PosStyles(align: PosAlign.center, underline: true),
    ),
    PosColumn(
      text: 'col6',
      width: 6,
      styles: PosStyles(align: PosAlign.center, underline: true),
    ),
    PosColumn(
      text: 'col3',
      width: 3,
      styles: PosStyles(align: PosAlign.center, underline: true),
    ),
  ]);

  ticket.text('Text size 200%',
      styles: PosStyles(
        height: PosTextSize.size2,
        width: PosTextSize.size2,
      ));

  // Print image
  //final ByteData data = await rootBundle.load('assets/images/logo.png');
  //final Uint8List bytes = data.buffer.asUint8List();
  // Print image using alternative commands
  // ticket.imageRaster(image);
  // ticket.imageRaster(image, imageFn: PosImageFn.graphics);

  // Print barcode
  final List<int> barData = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 4];
  ticket.barcode(Barcode.upcA(barData));



  ticket.feed(2);

  ticket.cut();
  return ticket;
}

Future<Ticket> testTicketImage(PaperSize paper) async {
  final Ticket ticket = Ticket(paper);

  // Print image
  final ByteData byteData = await rootBundle.load('assets/images/check.png');
  final Uint8List bytes = byteData.buffer.asUint8List();
  final Im.Image imagea = Im.decodeImage(bytes);
  // Using `ESC *`
  //ticket.image(imagea);
  // Using `GS v 0` (obsolete)
  //ticket.imageRaster(imagea);
  // Using `GS ( L`
  ticket.imageRaster(imagea, imageFn: PosImageFn.bitImageRaster);



  ticket.feed(2);

  ticket.cut();
  return ticket;
}

Future<Ticket> printImageCheck(PaperSize paper, String base64Src) async {
  final Ticket ticket = Ticket(paper);
  final Uint8List bytes = base64Decode(base64Src);
  final Im.Image image = Im.decodeImage(bytes);
  ticket.imageRaster(image, imageFn: PosImageFn.bitImageRaster);
  ticket.feed(2);
  ticket.cut();
  return ticket;
}