sunmi_printer_plus 2.1.3 
sunmi_printer_plus: ^2.1.3 copied to clipboard
marcus.brasizza.comSupport V2 Pro Sunmi Label Version and Null safety. With this package you can connect with Sunmi printers, print text, image, qrcode, barcodes and a custom Esc/Pos if you like.
import 'dart:typed_data';
import 'package:esc_pos_utils/esc_pos_utils.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:sunmi_printer_plus/column_maker.dart';
import 'package:sunmi_printer_plus/enums.dart';
import 'dart:async';
import 'package:sunmi_printer_plus/sunmi_printer_plus.dart';
import 'package:sunmi_printer_plus/sunmi_style.dart';
void main() async {
WidgetsFlutterBinding.ensureInitialized();
await SystemChrome.setPreferredOrientations(
[DeviceOrientation.landscapeRight, DeviceOrientation.landscapeRight]);
runApp(const MyApp());
}
class MyApp extends StatefulWidget {
const MyApp({Key? key}) : super(key: key);
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Sunmi Printer',
theme: ThemeData(
primaryColor: Colors.black,
),
debugShowCheckedModeBanner: false,
home: const Home());
}
}
class Home extends StatefulWidget {
const Home({Key? key}) : super(key: key);
@override
_HomeState createState() => _HomeState();
}
class _HomeState extends State<Home> {
bool printBinded = false;
int paperSize = 0;
String serialNumber = "";
String printerVersion = "";
@override
void initState() {
super.initState();
_bindingPrinter().then((bool? isBind) async {
SunmiPrinter.paperSize().then((int size) {
setState(() {
paperSize = size;
});
});
SunmiPrinter.printerVersion().then((String version) {
setState(() {
printerVersion = version;
});
});
SunmiPrinter.serialNumber().then((String serial) {
setState(() {
serialNumber = serial;
});
});
setState(() {
printBinded = isBind!;
});
});
}
/// must binding ur printer at first init in app
Future<bool?> _bindingPrinter() async {
final bool? result = await SunmiPrinter.bindingPrinter();
return result;
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('Sunmi printer Example'),
),
body: SingleChildScrollView(
child: Column(
children: [
Padding(
padding: const EdgeInsets.only(
top: 10,
),
child: Text("Print binded: " + printBinded.toString()),
),
Padding(
padding: const EdgeInsets.symmetric(vertical: 2.0),
child: Text("Paper size: " + paperSize.toString()),
),
Padding(
padding: const EdgeInsets.symmetric(vertical: 2.0),
child: Text("Serial number: " + serialNumber),
),
Padding(
padding: const EdgeInsets.symmetric(vertical: 2.0),
child: Text("Printer version: " + printerVersion),
),
const Divider(),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
ElevatedButton(
onPressed: () async {
await SunmiPrinter.initPrinter();
await SunmiPrinter.startTransactionPrint(true);
await SunmiPrinter.printQRCode(
'https://github.com/brasizza/sunmi_printer');
await SunmiPrinter.lineWrap(2);
await SunmiPrinter.exitTransactionPrint(true);
},
child: const Text('Print qrCode')),
ElevatedButton(
onPressed: () async {
await SunmiPrinter.initPrinter();
await SunmiPrinter.startTransactionPrint(true);
await SunmiPrinter.printBarCode('1234567890',
barcodeType: SunmiBarcodeType.CODE128,
textPosition: SunmiBarcodeTextPos.TEXT_UNDER,
height: 20);
await SunmiPrinter.lineWrap(2);
await SunmiPrinter.exitTransactionPrint(true);
},
child: const Text('Print barCode')),
ElevatedButton(
onPressed: () async {
await SunmiPrinter.initPrinter();
await SunmiPrinter.startTransactionPrint(true);
await SunmiPrinter.line();
await SunmiPrinter.lineWrap(2);
await SunmiPrinter.exitTransactionPrint(true);
},
child: const Text('Print line')),
ElevatedButton(
onPressed: () async {
await SunmiPrinter.lineWrap(2);
},
child: const Text('Wrap line')),
],
),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
ElevatedButton(
onPressed: () async {
await SunmiPrinter.initPrinter();
await SunmiPrinter.startTransactionPrint(true);
await SunmiPrinter.printText('Hello I\'m bold',
style: SunmiStyle(bold: true));
await SunmiPrinter.lineWrap(2);
await SunmiPrinter.exitTransactionPrint(true);
},
child: const Text('Bold Text')),
ElevatedButton(
onPressed: () async {
await SunmiPrinter.initPrinter();
await SunmiPrinter.startTransactionPrint(true);
await SunmiPrinter.printText('Very small!',
style: SunmiStyle(fontSize: SunmiFontSize.XS));
await SunmiPrinter.lineWrap(2);
await SunmiPrinter.exitTransactionPrint(true);
},
child: const Text('Very small font')),
ElevatedButton(
onPressed: () async {
await SunmiPrinter.initPrinter();
await SunmiPrinter.startTransactionPrint(true);
await SunmiPrinter.printText('Very small!',
style: SunmiStyle(fontSize: SunmiFontSize.SM));
await SunmiPrinter.lineWrap(2);
await SunmiPrinter.exitTransactionPrint(true);
},
child: const Text('Small font')),
ElevatedButton(
onPressed: () async {
await SunmiPrinter.initPrinter();
await SunmiPrinter.startTransactionPrint(true);
await SunmiPrinter.printText('Normal font',
style: SunmiStyle(fontSize: SunmiFontSize.MD));
await SunmiPrinter.lineWrap(2);
await SunmiPrinter.exitTransactionPrint(true);
},
child: const Text('Normal font')),
ElevatedButton(
onPressed: () async {
await SunmiPrinter.initPrinter();
await SunmiPrinter.printText('Large font',
style: SunmiStyle(fontSize: SunmiFontSize.LG));
await SunmiPrinter.lineWrap(2);
await SunmiPrinter.exitTransactionPrint(true);
},
child: const Text('Large font')),
ElevatedButton(
onPressed: () async {
await SunmiPrinter.initPrinter();
await SunmiPrinter.startTransactionPrint(true);
await SunmiPrinter.setFontSize(SunmiFontSize.XL);
await SunmiPrinter.printText('Very Large font!');
await SunmiPrinter.resetFontSize();
await SunmiPrinter.lineWrap(2);
await SunmiPrinter.exitTransactionPrint(true);
},
child: const Text('Very large font')),
ElevatedButton(
onPressed: () async {
await SunmiPrinter.initPrinter();
await SunmiPrinter.startTransactionPrint(true);
await SunmiPrinter.setCustomFontSize(13);
await SunmiPrinter.printText('Very Large font!');
await SunmiPrinter.resetFontSize();
await SunmiPrinter.lineWrap(2);
await SunmiPrinter.exitTransactionPrint(true);
},
child: const Text('Custom size font')),
],
),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
ElevatedButton(
onPressed: () async {
await SunmiPrinter.initPrinter();
await SunmiPrinter.startTransactionPrint(true);
await SunmiPrinter.printText('Align right',
style: SunmiStyle(align: SunmiPrintAlign.RIGHT));
await SunmiPrinter.lineWrap(2);
await SunmiPrinter.exitTransactionPrint(true);
},
child: const Text('Align right')),
ElevatedButton(
onPressed: () async {
await SunmiPrinter.initPrinter();
await SunmiPrinter.startTransactionPrint(true);
await SunmiPrinter.printText('Align left',
style: SunmiStyle(align: SunmiPrintAlign.LEFT));
await SunmiPrinter.lineWrap(2);
await SunmiPrinter.exitTransactionPrint(true);
},
child: const Text('Align left')),
ElevatedButton(
onPressed: () async {
await SunmiPrinter.initPrinter();
await SunmiPrinter.startTransactionPrint(true);
await SunmiPrinter.printText(
'Align center/ LARGE TEXT AND BOLD',
style: SunmiStyle(
align: SunmiPrintAlign.CENTER,
bold: true,
fontSize: SunmiFontSize.LG),
);
await SunmiPrinter.lineWrap(2);
await SunmiPrinter.exitTransactionPrint(true);
},
child: const Text('Align center'),
),
],
),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
GestureDetector(
onTap: () async {
await SunmiPrinter.initPrinter();
Uint8List byte =
await _getImageFromAsset('assets/images/dash.jpeg');
await SunmiPrinter.setAlignment(SunmiPrintAlign.CENTER);
await SunmiPrinter.startTransactionPrint(true);
await SunmiPrinter.printImage(byte);
await SunmiPrinter.lineWrap(2);
await SunmiPrinter.exitTransactionPrint(true);
},
child: Column(
children: [
Image.asset(
'assets/images/dash.jpeg',
width: 100,
),
const Text('Print this image from asset!')
],
),
),
GestureDetector(
onTap: () async {
await SunmiPrinter.initPrinter();
String url =
'https://avatars.githubusercontent.com/u/14101776?s=100';
// convert image to Uint8List format
Uint8List byte =
(await NetworkAssetBundle(Uri.parse(url)).load(url))
.buffer
.asUint8List();
await SunmiPrinter.setAlignment(SunmiPrintAlign.CENTER);
await SunmiPrinter.startTransactionPrint(true);
await SunmiPrinter.printImage(byte);
await SunmiPrinter.lineWrap(2);
await SunmiPrinter.exitTransactionPrint(true);
},
child: Column(
children: [
Image.network(
'https://avatars.githubusercontent.com/u/14101776?s=100'),
const Text('Print this image from WEB!')
],
),
),
],
),
),
const Divider(),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
ElevatedButton(
onPressed: () async {
await SunmiPrinter.cut();
},
child: const Text('CUT PAPER')),
]),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
ElevatedButton(
onPressed: () async {
await SunmiPrinter.initPrinter();
await SunmiPrinter.startTransactionPrint(true);
await SunmiPrinter.setAlignment(
SunmiPrintAlign.CENTER);
await SunmiPrinter.line();
await SunmiPrinter.printText('Payment receipt');
await SunmiPrinter.printText(
'Using the old way to bold!');
await SunmiPrinter.line();
await SunmiPrinter.printRow(cols: [
ColumnMaker(
text: 'Name',
width: 12,
align: SunmiPrintAlign.LEFT),
ColumnMaker(
text: 'Qty',
width: 6,
align: SunmiPrintAlign.CENTER),
ColumnMaker(
text: 'UN',
width: 6,
align: SunmiPrintAlign.RIGHT),
ColumnMaker(
text: 'TOT',
width: 6,
align: SunmiPrintAlign.RIGHT),
]);
await SunmiPrinter.printRow(cols: [
ColumnMaker(
text: 'Fries',
width: 12,
align: SunmiPrintAlign.LEFT),
ColumnMaker(
text: '4x',
width: 6,
align: SunmiPrintAlign.CENTER),
ColumnMaker(
text: '3.00',
width: 6,
align: SunmiPrintAlign.RIGHT),
ColumnMaker(
text: '12.00',
width: 6,
align: SunmiPrintAlign.RIGHT),
]);
await SunmiPrinter.printRow(cols: [
ColumnMaker(
text: 'Strawberry',
width: 12,
align: SunmiPrintAlign.LEFT),
ColumnMaker(
text: '1x',
width: 6,
align: SunmiPrintAlign.CENTER),
ColumnMaker(
text: '24.44',
width: 6,
align: SunmiPrintAlign.RIGHT),
ColumnMaker(
text: '24.44',
width: 6,
align: SunmiPrintAlign.RIGHT),
]);
await SunmiPrinter.printRow(cols: [
ColumnMaker(
text: 'Soda',
width: 12,
align: SunmiPrintAlign.LEFT),
ColumnMaker(
text: '1x',
width: 6,
align: SunmiPrintAlign.CENTER),
ColumnMaker(
text: '1.99',
width: 6,
align: SunmiPrintAlign.RIGHT),
ColumnMaker(
text: '1.99',
width: 6,
align: SunmiPrintAlign.RIGHT),
]);
await SunmiPrinter.line();
await SunmiPrinter.printRow(cols: [
ColumnMaker(
text: 'TOTAL',
width: 25,
align: SunmiPrintAlign.LEFT),
ColumnMaker(
text: '38.43',
width: 5,
align: SunmiPrintAlign.RIGHT),
]);
await SunmiPrinter.printRow(cols: [
ColumnMaker(
text: 'ARABIC TEXT',
width: 15,
align: SunmiPrintAlign.LEFT),
ColumnMaker(
text: 'اسم المشترك',
width: 15,
align: SunmiPrintAlign.LEFT),
]);
await SunmiPrinter.printRow(cols: [
ColumnMaker(
text: 'اسم المشترك',
width: 15,
align: SunmiPrintAlign.LEFT),
ColumnMaker(
text: 'اسم المشترك',
width: 15,
align: SunmiPrintAlign.LEFT),
]);
await SunmiPrinter.printRow(cols: [
ColumnMaker(
text: 'RUSSIAN TEXT',
width: 15,
align: SunmiPrintAlign.LEFT),
ColumnMaker(
text: 'Санкт-Петербу́рг',
width: 15,
align: SunmiPrintAlign.LEFT),
]);
await SunmiPrinter.printRow(cols: [
ColumnMaker(
text: 'Санкт-Петербу́рг',
width: 15,
align: SunmiPrintAlign.LEFT),
ColumnMaker(
text: 'Санкт-Петербу́рг',
width: 15,
align: SunmiPrintAlign.LEFT),
]);
await SunmiPrinter.printRow(cols: [
ColumnMaker(
text: 'CHINESE TEXT',
width: 15,
align: SunmiPrintAlign.LEFT),
ColumnMaker(
text: '風俗通義',
width: 15,
align: SunmiPrintAlign.LEFT),
]);
await SunmiPrinter.printRow(cols: [
ColumnMaker(
text: '風俗通義',
width: 15,
align: SunmiPrintAlign.LEFT),
ColumnMaker(
text: '風俗通義',
width: 15,
align: SunmiPrintAlign.LEFT),
]);
await SunmiPrinter.setAlignment(
SunmiPrintAlign.CENTER);
await SunmiPrinter.line();
await SunmiPrinter.bold();
await SunmiPrinter.printText(
'Transaction\'s Qrcode');
await SunmiPrinter.resetBold();
await SunmiPrinter.printQRCode(
'https://github.com/brasizza/sunmi_printer');
await SunmiPrinter.lineWrap(2);
await SunmiPrinter.exitTransactionPrint(true);
},
child: const Text('TICKET EXAMPLE')),
]),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
ElevatedButton(
onPressed: () async {
final List<int> _escPos = await _customEscPos();
await SunmiPrinter.initPrinter();
await SunmiPrinter.startTransactionPrint(true);
await SunmiPrinter.printRawData(
Uint8List.fromList(_escPos));
await SunmiPrinter.exitTransactionPrint(true);
},
child: const Text('Custom ESC/POS to print')),
]),
),
],
),
));
}
}
Future<Uint8List> readFileBytes(String path) async {
ByteData fileData = await rootBundle.load(path);
Uint8List fileUnit8List = fileData.buffer
.asUint8List(fileData.offsetInBytes, fileData.lengthInBytes);
return fileUnit8List;
}
Future<Uint8List> _getImageFromAsset(String iconPath) async {
return await readFileBytes(iconPath);
}
Future<List<int>> _customEscPos() async {
final profile = await CapabilityProfile.load();
final generator = Generator(PaperSize.mm58, profile);
List<int> bytes = [];
bytes += generator.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');
bytes += generator.text('Special 1: àÀ èÈ éÉ ûÛ üÜ çÇ ôÔ',
styles: const PosStyles(codeTable: 'CP1252'));
bytes += generator.text('Special 2: blåbærgrød',
styles: const PosStyles(codeTable: 'CP1252'));
bytes += generator.text('Bold text', styles: const PosStyles(bold: true));
bytes +=
generator.text('Reverse text', styles: const PosStyles(reverse: true));
bytes += generator.text('Underlined text',
styles: const PosStyles(underline: true), linesAfter: 1);
bytes += generator.text('Align left',
styles: const PosStyles(align: PosAlign.left));
bytes += generator.text('Align center',
styles: const PosStyles(align: PosAlign.center));
bytes += generator.text('Align right',
styles: const PosStyles(align: PosAlign.right), linesAfter: 1);
bytes += generator.qrcode('Barcode by escpos',
size: QRSize.Size4, cor: QRCorrection.H);
bytes += generator.feed(2);
bytes += generator.row([
PosColumn(
text: 'col3',
width: 3,
styles: const PosStyles(align: PosAlign.center, underline: true),
),
PosColumn(
text: 'col6',
width: 6,
styles: const PosStyles(align: PosAlign.center, underline: true),
),
PosColumn(
text: 'col3',
width: 3,
styles: const PosStyles(align: PosAlign.center, underline: true),
),
]);
bytes += generator.text('Text size 200%',
styles: const PosStyles(
height: PosTextSize.size2,
width: PosTextSize.size2,
));
bytes += generator.reset();
bytes += generator.cut();
return bytes;
}Metadata
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Publisher
Metadata
Support V2 Pro Sunmi Label Version and Null safety. With this package you can connect with Sunmi printers, print text, image, qrcode, barcodes and a custom Esc/Pos if you like.
Repository (GitHub)
View/report issues
Documentation
License
BSD-3-Clause (LICENSE)
