impression a distance
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305
lib/pages/printer_page.dart
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305
lib/pages/printer_page.dart
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@ -0,0 +1,305 @@
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import 'package:flutter/foundation.dart';
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import 'package:flutter/material.dart';
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import 'dart:io';
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import 'dart:convert';
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class PrinterPage extends StatefulWidget {
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const PrinterPage({super.key});
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@override
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_PrinterPageState createState() => _PrinterPageState();
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}
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class _PrinterPageState extends State<PrinterPage> {
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static const String printerIP = '192.168.123.251';
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static const int printerPort = 9100;
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bool _isPrinting = false;
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bool _isConnected = false;
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bool _isTestingConnection = false;
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String _statusMessage = 'Non testé';
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@override
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void initState() {
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super.initState();
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_testConnection();
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}
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Future<void> _testConnection() async {
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setState(() {
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_isTestingConnection = true;
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_statusMessage = 'Test en cours...';
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});
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try {
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final socket = await Socket.connect(
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printerIP,
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printerPort,
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).timeout(const Duration(seconds: 5));
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await socket.close();
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setState(() {
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_isConnected = true;
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_statusMessage = 'Connectée';
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_isTestingConnection = false;
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});
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} catch (e) {
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setState(() {
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_isConnected = false;
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_statusMessage = 'Erreur: $e';
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_isTestingConnection = false;
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});
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}
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}
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Future<bool> _printReceipt() async {
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try {
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final socket = await Socket.connect(printerIP, printerPort);
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final List<int> bytes = [];
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// Initialisation ESC/POS
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bytes.addAll([0x1B, 0x40]); // ESC @
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// Titre centré et agrandi
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bytes.addAll([0x1B, 0x61, 0x01]); // Centre
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bytes.addAll([0x1D, 0x21, 0x11]); // Taille double
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bytes.addAll(utf8.encode('REÇU DE VENTE'));
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bytes.addAll([0x0A, 0x0A]);
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// Retour taille normale
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bytes.addAll([0x1D, 0x21, 0x00]);
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bytes.addAll([0x1B, 0x61, 0x00]); // Alignement gauche
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// Informations transaction
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final now = DateTime.now();
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final dateStr =
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'${now.day.toString().padLeft(2, '0')}/${now.month.toString().padLeft(2, '0')}/${now.year} ${now.hour.toString().padLeft(2, '0')}:${now.minute.toString().padLeft(2, '0')}';
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bytes.addAll(utf8.encode('Date: $dateStr\n'));
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bytes.addAll(utf8.encode('Caissier: Admin\n'));
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bytes.addAll(utf8.encode('--------------------------------\n'));
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// En-têtes colonnes
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bytes.addAll(utf8.encode('Article Qte Prix\n'));
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bytes.addAll(utf8.encode('--------------------------------\n'));
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// Articles
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bytes.addAll(utf8.encode('Produit 1 2 25.00€\n'));
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bytes.addAll(utf8.encode('Produit 2 1 15.50€\n'));
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bytes.addAll(utf8.encode('--------------------------------\n'));
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// Total
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bytes.addAll([0x1B, 0x45, 0x01]); // Gras ON
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bytes.addAll(utf8.encode('TOTAL 40.50€\n'));
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bytes.addAll([0x1B, 0x45, 0x00]); // Gras OFF
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bytes.addAll([0x0A, 0x0A]);
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// Message de remerciement centré
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bytes.addAll([0x1B, 0x61, 0x01]); // Centre
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bytes.addAll(utf8.encode('Merci de votre visite !\n'));
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bytes.addAll([0x0A, 0x0A]);
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// Coupe papier
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bytes.addAll([0x1D, 0x56, 0x00]); // GS V 0
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// Envoi des données
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socket.add(bytes);
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await socket.flush();
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await socket.close();
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return true;
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} catch (e) {
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if (kDebugMode) {
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print('Erreur impression: $e');
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}
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return false;
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}
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}
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Future<void> _handlePrint() async {
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setState(() => _isPrinting = true);
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final success = await _printReceipt();
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text(
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success ? 'Impression réussie!' : 'Échec de l\'impression',
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),
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backgroundColor: success ? Colors.green : Colors.red,
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duration: const Duration(seconds: 3),
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),
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);
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setState(() => _isPrinting = false);
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: const Text('Imprimante POS'),
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backgroundColor: Colors.blue,
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foregroundColor: Colors.white,
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),
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body: Padding(
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padding: const EdgeInsets.all(16.0),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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// Status de connexion
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Card(
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child: Padding(
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padding: const EdgeInsets.all(16.0),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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'Status de l\'imprimante',
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style: Theme.of(context).textTheme.titleLarge,
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),
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const SizedBox(height: 10),
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Row(
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children: [
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if (_isTestingConnection)
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const SizedBox(
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width: 20,
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height: 20,
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child: CircularProgressIndicator(strokeWidth: 2),
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)
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else
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Icon(
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_isConnected ? Icons.wifi : Icons.wifi_off,
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color: _isConnected ? Colors.green : Colors.red,
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size: 20,
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),
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const SizedBox(width: 10),
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Expanded(
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child: Text(
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'IP: $printerIP:$printerPort\nStatus: $_statusMessage',
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style: const TextStyle(fontSize: 14),
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),
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),
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],
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),
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const SizedBox(height: 10),
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ElevatedButton.icon(
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onPressed: _isTestingConnection ? null : _testConnection,
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icon: const Icon(Icons.refresh),
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label: const Text('Tester la connexion'),
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),
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],
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),
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),
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),
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const SizedBox(height: 20),
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// Aperçu du reçu
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Card(
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child: Padding(
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padding: const EdgeInsets.all(16.0),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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'Aperçu du reçu',
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style: Theme.of(context).textTheme.titleLarge,
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),
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const SizedBox(height: 10),
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Container(
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padding: const EdgeInsets.all(12),
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decoration: BoxDecoration(
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border: Border.all(color: Colors.grey),
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borderRadius: BorderRadius.circular(4),
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color: Colors.grey[50],
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),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.center,
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children: [
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const Text(
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'REÇU DE VENTE',
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style: TextStyle(
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fontSize: 18,
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fontWeight: FontWeight.bold,
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),
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),
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const SizedBox(height: 10),
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Align(
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alignment: Alignment.centerLeft,
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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'Date: ${DateTime.now().toString().substring(0, 16)}',
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),
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const Text('Caissier: Admin'),
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const Text('--------------------------------'),
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const Text('Article Qte Prix'),
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const Text('--------------------------------'),
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const Text('Produit 1 2 25.00€'),
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const Text('Produit 2 1 15.50€'),
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const Text('--------------------------------'),
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const Text(
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'TOTAL 40.50€',
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style: TextStyle(fontWeight: FontWeight.bold),
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),
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],
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),
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),
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const SizedBox(height: 10),
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const Text('Merci de votre visite !'),
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],
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),
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),
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],
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),
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),
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),
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const SizedBox(height: 20),
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// Bouton d'impression
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ElevatedButton.icon(
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onPressed:
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(_isConnected && !_isPrinting && !_isTestingConnection)
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? _handlePrint
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: null,
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icon:
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_isPrinting
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? const SizedBox(
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width: 20,
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height: 20,
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child: CircularProgressIndicator(
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strokeWidth: 2,
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valueColor: AlwaysStoppedAnimation<Color>(
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Colors.white,
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),
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),
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)
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: const Icon(Icons.print),
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label: Text(_isPrinting ? 'Impression...' : 'Imprimer le reçu'),
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style: ElevatedButton.styleFrom(
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backgroundColor: Colors.green,
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foregroundColor: Colors.white,
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padding: const EdgeInsets.symmetric(vertical: 15),
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textStyle: const TextStyle(fontSize: 16),
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),
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),
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if (!_isConnected && !_isTestingConnection)
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const Padding(
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padding: EdgeInsets.only(top: 10),
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child: Text(
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'Vérifiez que l\'imprimante est allumée et connectée au réseau',
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style: TextStyle(color: Colors.orange, fontSize: 12),
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textAlign: TextAlign.center,
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),
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),
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],
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),
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),
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);
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}
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}
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@ -27,6 +27,8 @@ dependencies:
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share_plus: ^7.2.1
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permission_handler: ^11.1.0
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intl: ^0.18.1
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esc_pos_printer: ^4.1.0
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esc_pos_utils: ^1.1.0
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# Dépendances de développement/test
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dev_dependencies:
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@ -34,6 +36,9 @@ dev_dependencies:
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sdk: flutter
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flutter_lints: ^3.0.1
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dependency_overrides:
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image: ^4.1.0
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# Paramètres spécifiques à Flutter
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flutter:
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uses-material-design: true
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