easylayer 0.0.1 
easylayer: ^0.0.1 copied to clipboard
Published 15 months ago • 
tiagomlbrasil.com
tiagomlbrasil.comUm wrapper para a API Easylayer utilizada por produtos da Gertec, como o SK210.
import 'package:easylayer/easylayer.dart';
import 'package:flutter/material.dart' hide Size, Alignment;
import 'package:flutter/services.dart' hide Size;
void main() {
WidgetsFlutterBinding.ensureInitialized();
runApp(const Application());
}
class Application extends StatefulWidget {
const Application({super.key});
@override
State<Application> createState() => _ApplicationState();
}
class _ApplicationState extends State<Application> {
final printer = Easylayer.printer;
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'EasyLayer',
theme: ThemeData(
colorScheme: ColorScheme.fromSeed(
seedColor: const Color(0xFF027DFD),
brightness: Brightness.light,
primary: const Color(0xFF027DFD),
),
useMaterial3: true,
),
debugShowCheckedModeBanner: false,
home: Scaffold(
body: SafeArea(
child: ListView(
// printText
// printImage
// printHtml
// printTable
// printBarcode
// scrollPaper
// cutPaper
// getStatus
// <comprehensive example>
children: [
Button(
iconData: Icons.receipt_outlined,
title: 'Imprimir texto (printText)',
body: 'Imprime uma mensagem de texto pré-definida.',
onTap: () async {
await printer.printText(
text: 'Está é uma mensagem de texto pré-definida!',
);
},
),
Button(
iconData: Icons.image_outlined,
title: 'Imprimir imagem (printImage)',
body: 'Imprime uma imagem pré-definida.',
onTap: () async {
final byteData = await rootBundle.load(
'assets/images/nico.jpg',
);
final image = byteData.buffer.asUint8List();
await printer.printImage(
image: image,
);
},
),
Button(
iconData: Icons.html_outlined,
title: 'Imprimir HTML (printHtml)',
body: 'Imprime um conteúdo HTML pré-definido.',
onTap: () async {
const htmlCode = '''
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Quick Test Page</title>
<style>
body {
font-family: Arial, sans-serif;
margin: 20px;
}
#output {
margin-top: 20px;
padding: 10px;
border: 1px solid #ccc;
}
</style>
</head>
<body>
<h1>Test Page</h1>
<label for="inputText">Enter something:</label>
<input type="text" id="inputText" placeholder="Type here...">
<button onclick="displayText()">Submit</button>
<div id="output"></div>
<script>
function displayText() {
var input = document.getElementById("inputText").value;
document.getElementById("output").innerText = input ? "You entered: " + input : "Please enter something!";
}
</script>
</body>
</html>
''';
await printer.printHtml(
htmlCode: htmlCode,
);
},
),
Button(
iconData: Icons.table_rows_outlined,
title: 'Imprimir tabela (printTable)',
body: 'Imprime uma tabela pré-definida.',
onTap: () async {
await printer.printTable(
header: [
'Show',
'Airing Period',
'IMDb Rating',
'Rotten Tomatoes',
'Letterboxd'
],
rows: [
[
'Breaking Bad',
'2008-2013',
'9.5 IMDb',
'96% RT',
'4.6 LB'
],
[
'The Sopranos',
'1999-2007',
'9.2 IMDb',
'92% RT',
'4.5 LB'
],
[
'Better Call Saul',
'2015-2022',
'8.9 IMDb',
'98% RT',
'4.4 LB'
],
[
'Stranger Things',
'2016-',
'8.7 IMDb',
'91% RT',
'4.3 LB'
],
],
);
},
),
Button(
iconData: Icons.move_down_outlined,
title: 'Rolar o papel de impressão (scrollPaper)',
body: 'Rola em uma linha o papel de impressão.',
onTap: () async {
await printer.scrollPaper(
lines: 1,
);
},
),
Button(
iconData: Icons.cut_outlined,
title: 'Cortar o papel de impressão',
body: 'Realiza o corte do papel de impressão.',
onTap: () async {
await printer.cutPaper(
cutType: CutType.PAPER_FULL_CUT,
);
},
),
Builder(builder: (context) {
return Button(
iconData: Icons.settings_outlined,
title: 'Ver status',
body: 'Exibe o status atual da impressora',
onTap: () async {
final status = await printer.getStatus();
if (context.mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text(
status.toString(),
),
),
);
}
},
);
}),
Button(
iconData: Icons.receipt_long_outlined,
title: 'Imprimir exemplo',
body:
'Imprime um extenso exemplo das funcionalidades da biblioteca/impressora.',
onTap: () async {
await printer.printText(
text: 'Este é um texto simples.',
);
await printer.printText(
offset: 20,
textFormat: const TextFormat(),
text: 'Este é um texto simples com offset de 20.',
);
await printer.printText(
text: 'Este é um texto em negrito.',
textFormat: const TextFormat(
bold: true,
),
);
await printer.printText(
text: 'Este é um texto em itálico.',
textFormat: const TextFormat(
italic: true,
),
);
await printer.printText(
text: 'Este é um texto com underline.',
textFormat: const TextFormat(
underscore: true,
),
);
await printer.printText(
text:
'Este é um texto com em negrito e itálico com underline.',
textFormat: const TextFormat(
bold: true,
italic: true,
underscore: true,
),
);
await printer.printText(
text: 'Este é um texto pequeno alinhado à esquerda.',
textFormat: const TextFormat(
fontSize: 16,
alignment: Alignment.LEFT,
),
);
await printer.printText(
text: 'Este é um texto médio alinhado ao centro.',
textFormat: const TextFormat(
fontSize: 20,
alignment: Alignment.CENTER,
),
);
await printer.printText(
text: 'Este é um texto grande alinhado à direita.',
textFormat: const TextFormat(
fontSize: 24,
alignment: Alignment.RIGHT,
),
);
//
await printer.scrollPaper(lines: 3);
//
final byteData = await rootBundle.load(
'assets/images/nico.jpg',
);
final image = byteData.buffer.asUint8List();
await printer.printImage(
image: image,
);
await printer.printImage(
printConfig: const PrintConfig(
width: 200,
height: 200,
),
image: image,
);
await printer.printImage(
offset: 50,
printConfig: const PrintConfig(
width: 200,
height: 200,
),
image: image,
);
//
await printer.scrollPaper(lines: 3);
//
const htmlCode = '''
<!DOCTYPE html>
<html>
<head>
<title>Test Page</title>
</head>
<body>
<h1>Hello, World!</h1>
<p>This is a test page.</p>
</body>
</html>''';
await printer.printHtml(
htmlCode: htmlCode,
);
await printer.printHtml(
printConfig: const PrintConfig(
width: 200,
height: 200,
),
hasAssetsLoading: false,
htmlCode: htmlCode,
);
await printer.printHtml(
offset: 50,
printConfig: const PrintConfig(
width: 200,
height: 200,
),
hasAssetsLoading: false,
htmlCode: htmlCode,
);
//
await printer.scrollPaper(lines: 3);
//
final header = <String>[
'Show',
'Airing Period',
'IMDb Rating',
'Rotten Tomatoes',
'Letterboxd'
];
final rows = [
[
'Breaking Bad',
'2008-2013',
'9.5 IMDb',
'96% RT',
'4.6 LB'
],
[
'The Sopranos',
'1999-2007',
'9.2 IMDb',
'92% RT',
'4.5 LB'
],
[
'Better Call Saul',
'2015-2022',
'8.9 IMDb',
'98% RT',
'4.4 LB'
],
[
'Stranger Things',
'2016-',
'8.7 IMDb',
'91% RT',
'4.3 LB'
],
];
await printer.printTable(
rows: rows,
);
await printer.printTable(
header: header,
rows: rows,
);
await printer.printTable(
tableFormat: const TableFormat(
headerAlignment: Alignment.CENTER,
rowAlignment: Alignment.RIGHT,
fontSize: 8,
),
header: header,
rows: rows,
);
//
await printer.scrollPaper(lines: 3);
const lipsum =
'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.';
await printer.printText(
text: 'QR_CODE',
);
await printer.printBarcode(
barcodeFormat: const BarcodeFormat(
barcodeType: BarcodeType.QR_CODE,
),
data: lipsum,
);
await printer.printBarcode(
barcodeFormat: const BarcodeFormat(
barcodeType: BarcodeType.QR_CODE,
size: Size.SMALL,
),
data: lipsum,
);
await printer.printBarcode(
barcodeFormat: const BarcodeFormat(
barcodeType: BarcodeType.QR_CODE,
size: Size.HALF_PAPER,
),
data: lipsum,
);
await printer.printBarcode(
barcodeFormat: const BarcodeFormat(
barcodeType: BarcodeType.QR_CODE,
size: Size.FULL_PAPER,
),
data: lipsum,
);
//
await printer.scrollPaper(lines: 1);
//
const ean8 = '12345678';
await printer.printBarcode(
barcodeFormat: const BarcodeFormat(
barcodeType: BarcodeType.EAN_8,
),
data: ean8,
);
await printer.printBarcode(
barcodeFormat: const BarcodeFormat(
barcodeType: BarcodeType.EAN_8,
size: Size.SMALL,
),
data: ean8,
);
await printer.printBarcode(
barcodeFormat: const BarcodeFormat(
barcodeType: BarcodeType.EAN_8,
size: Size.HALF_PAPER,
),
data: ean8,
);
await printer.printBarcode(
barcodeFormat: const BarcodeFormat(
barcodeType: BarcodeType.EAN_8,
size: Size.FULL_PAPER,
),
data: ean8,
);
//
await printer.scrollPaper(lines: 1);
//
const ean13 = '7891000315507';
await printer.printBarcode(
barcodeFormat: const BarcodeFormat(
barcodeType: BarcodeType.EAN_13,
),
data: ean13,
);
await printer.printBarcode(
barcodeFormat: const BarcodeFormat(
barcodeType: BarcodeType.EAN_13,
size: Size.SMALL,
),
data: ean13,
);
await printer.printBarcode(
barcodeFormat: const BarcodeFormat(
barcodeType: BarcodeType.EAN_13,
size: Size.HALF_PAPER,
),
data: ean13,
);
await printer.printBarcode(
barcodeFormat: const BarcodeFormat(
barcodeType: BarcodeType.EAN_13,
size: Size.FULL_PAPER,
),
data: ean13,
);
//
await printer.scrollPaper(lines: 1);
await printer.cutPaper(cutType: CutType.PAPER_FULL_CUT);
},
),
],
),
),
),
);
}
}
class Button extends StatelessWidget {
final IconData? iconData;
final String title;
final String? body;
final void Function()? onTap;
final double spacer;
const Button({
super.key,
this.iconData,
required this.title,
this.body,
this.onTap,
this.spacer = 8.0,
});
@override
Widget build(BuildContext context) {
return InkWell(
onTap: onTap,
child: Padding(
padding: EdgeInsets.all(spacer),
child: Row(
children: [
if (iconData != null) ...[
Icon(
iconData,
),
SizedBox(width: spacer),
],
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
Text(
title,
style: Theme.of(context).textTheme.titleMedium,
),
if (body is String) ...[
Text(
body!,
style: Theme.of(context).textTheme.bodyMedium,
),
],
],
),
)
],
),
),
);
}
}Metadata
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likes
150
points
21
downloads
Publisher
Weekly Downloads
Metadata
Um wrapper para a API Easylayer utilizada por produtos da Gertec, como o SK210.
Repository (GitHub)
View/report issues
Documentation
License
BSD-3-Clause (license)
Dependencies
flutter, plugin_platform_interface
More
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