elgin 0.0.1 
elgin: ^0.0.1 copied to clipboard
marcus.brasizza.comEste package tem como finalidade a comunicação de um jeito fácil com vários equipamentos elgin, como SAT, impressoras térmicas e mini PDVs
import 'dart:io';
import 'dart:typed_data';
import 'package:elgin/components/enums.dart';
import 'package:elgin/elgin.dart';
import 'package:esc_pos_utils/esc_pos_utils.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'dart:async';
import 'package:path_provider/path_provider.dart';
void main() {
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;
String url = 'http://marcus.brasizza.com/imagens/flutter-icon.png';
String printerVersion = "";
@override
void initState() {
super.initState();
_bindingPrinter().then((int? isBind) async {
Elgin.printer.libVersion.then((String version) {
setState(() {
printerVersion = version;
});
});
setState(() {
printBinded = isBind == 0 ? true : false;
});
});
}
/// must binding ur printer at first init in app
Future<int?> _bindingPrinter() async {
final int? result = await Elgin.printer.connect();
return result;
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('ELGIN 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("Printer version: " + printerVersion),
),
const Divider(),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
ElevatedButton(
onPressed: () async {
await Elgin.printer.printQRCode(
"https://github.com/brasizza/flutter-elgin",
size: ElginQrcodeSize.SIZE5,
align: ElginAlign.CENTER,
);
await Elgin.printer.feed(2);
},
child: const Text('Print qrCode')),
ElevatedButton(
onPressed: () async {
await Elgin.printer.printBarCode(
'{C35170900246872000134590002121801051011580881',
barcodeType: EliginBarcodeType.CODE128,
textPosition: ElginBarcodeTextPosition.TEXT_UNDER,
align: ElginAlign.CENTER,
height: 100,
width: 3,
);
await Elgin.printer.feed(2);
},
child: const Text('Print barCode')),
ElevatedButton(
onPressed: () async {
await Elgin.printer.line();
},
child: const Text('Print line')),
ElevatedButton(
onPressed: () async {
await Elgin.printer.feed(2);
},
child: const Text('Wrap line')),
],
),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
ElevatedButton(
onPressed: () async {
await Elgin.printer
.printString('Hello I\'m bold', isBold: true);
},
child: const Text('Bold Text')),
ElevatedButton(
onPressed: () async {
await Elgin.printer
.printString('Normal font', fontSize: ElginSize.MD);
await Elgin.printer.feed(2);
},
child: const Text('Normal font')),
ElevatedButton(
onPressed: () async {
await Elgin.printer
.printString('Large font', fontSize: ElginSize.LG);
await Elgin.printer.feed(2);
},
child: const Text('Large font')),
ElevatedButton(
onPressed: () async {
await Elgin.printer.printString('Very large font',
fontSize: ElginSize.XL);
await Elgin.printer.feed(2);
},
child: const Text('Very large font')),
],
),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
ElevatedButton(
onPressed: () async {
await Elgin.printer.printString('Algin right',
align: ElginAlign.RIGHT);
await Elgin.printer.feed(2);
},
child: const Text('Align right')),
ElevatedButton(
onPressed: () async {
await Elgin.printer
.printString('Algin left', align: ElginAlign.RIGHT);
await Elgin.printer.feed(2);
},
child: const Text('Align left')),
ElevatedButton(
onPressed: () async {
await Elgin.printer.printString(
'Align center/ LARGE TEXT AND BOLD',
align: ElginAlign.CENTER,
isBold: true,
fontSize: ElginSize.XL,
isUnderline: true);
await Elgin.printer.feed(2);
},
child: const Text('Align center'),
),
],
),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
GestureDetector(
onTap: () async {
Uint8List byte =
await _getImageFromAsset('assets/images/dash.jpeg');
Directory tempPath = await getTemporaryDirectory();
File file = File('${tempPath.path}/dash.jpg');
await file.writeAsBytes(byte.buffer
.asUint8List(byte.offsetInBytes, byte.lengthInBytes));
await Elgin.printer.printImage(file, false);
},
child: Column(
children: [
Image.asset(
'assets/images/dash.jpeg',
width: 100,
),
const Text('Print this image from asset!')
],
),
),
GestureDetector(
onTap: () async {
// convert image to Uint8List format
Uint8List byte =
(await NetworkAssetBundle(Uri.parse(url)).load(url))
.buffer
.asUint8List();
Directory tempPath = await getTemporaryDirectory();
File file = File('${tempPath.path}/onlineImage.jpg');
await file.writeAsBytes(byte.buffer
.asUint8List(byte.offsetInBytes, byte.lengthInBytes));
await Elgin.printer.printImage(file, false);
},
child: Column(
children: [
Image.network(
url,
width: 100,
),
const Text('Print this image from WEB!')
],
),
),
],
),
),
const Divider(),
Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
ElevatedButton(
onPressed: () async {
await Elgin.printer.cut();
},
child: const Text('CUT PAPER')),
]),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
ElevatedButton(
onPressed: () async {
final List<int> _escPos = await _customEscPos();
await Elgin.printer.printRaw(_escPos);
},
child: const Text('Custom ESC/POS to print')),
]),
),
],
),
const Divider(),
Text("Sensors"),
Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
ElevatedButton(
onPressed: () async {
int _sensor = await Elgin.printer.statusSensor();
String messageSensor = 'Sensor is OK';
if (_sensor == 6) {
messageSensor = 'Paper is running out!';
}
if (_sensor == 7) {
messageSensor = 'No paper!';
}
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(content: Text(messageSensor)));
},
child: const Text('Paper sensor')),
]),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
ElevatedButton(
onPressed: () async {
await Elgin.printer.elginCashier();
},
child: const Text('Elgin cashier')),
]),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
ElevatedButton(
onPressed: () async {
await Elgin.printer.customCashier(1, 2, 3);
},
child: const Text('Custom cashier')),
]),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
ElevatedButton(
onPressed: () async {
await Elgin.printer.beep(5, 10, 20);
},
child: const Text('Beep')),
]),
),
],
),
],
),
),
);
}
}
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('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
Este package tem como finalidade a comunicação de um jeito fácil com vários equipamentos elgin, como SAT, impressoras térmicas e mini PDVs
Repository (GitHub)
View/report issues
License
unknown (LICENSE)
