blue_thermal_plus 0.0.4 
blue_thermal_plus: ^0.0.4 copied to clipboard
Plugin para da suporte a impressão android e IOS em impressoras termicas
import 'dart:async';
import 'dart:io';
import 'dart:typed_data';
import 'package:flutter/material.dart';
import 'package:blue_thermal_plus/src/blue_thermal_plus.dart';
import 'package:blue_thermal_plus/api/models.dart';
import 'package:blue_thermal_plus/api/printer_config.dart';
import 'package:permission_handler/permission_handler.dart';
void main() => runApp(const MyApp());
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'BlueThermalPlus Example',
debugShowCheckedModeBanner: false,
theme: ThemeData(useMaterial3: true),
home: const PluginTestPage(),
);
}
}
class PluginTestPage extends StatefulWidget {
const PluginTestPage({super.key});
@override
State<PluginTestPage> createState() => _PluginTestPageState();
}
class _PluginTestPageState extends State<PluginTestPage> {
final bt = BlueThermalPlus();
PrinterTransport transport = PrinterTransport.ble;
final Map<String, PrinterDevice> devices = {};
PrinterDevice? selected;
bool scanning = false;
bool connected = false;
bool ready = false;
String status = "Pronto";
final List<String> logs = [];
StreamSubscription<PrinterEvent>? sub;
// ---------------- CONFIG STATE ----------------
PrinterConfig config = const PrinterConfig();
bool autoApplyOnScan = true;
bool autoApplyOnConnect = true;
// ---------------- STRATEGY ----------------
final IPrinterStrategy bigStrategy = AutoCtbTestPrinterStrategy();
@override
void initState() {
super.initState();
sub = bt.events.listen(_handleEvent);
}
@override
void dispose() {
sub?.cancel();
super.dispose();
}
// ---------------- HELPER: PERMISSIONS ----------------
Future<bool> _checkPermissions() async {
if (Platform.isAndroid) {
if (await Permission.bluetoothScan.request().isGranted &&
await Permission.bluetoothConnect.request().isGranted) {
return true;
}
if (await Permission.location.request().isGranted) {
return true;
}
_log("❌ Permissões negadas. Verifique as configurações.");
return false;
}
return true;
}
// ---------------- LOG + EVENTS ----------------
void _log(String msg) {
final line = "${DateTime.now().toIso8601String().substring(11, 19)} $msg";
setState(() {
logs.insert(0, line);
if (logs.length > 200) logs.removeRange(200, logs.length);
});
}
void _handleEvent(PrinterEvent e) {
final type = e.type.toString();
if (e.message != null && e.message!.isNotEmpty) {
_log("[$type] ${e.message}");
setState(() => status = e.message!);
} else {
_log("[$type]");
}
if (e.device != null) {
final d = e.device!;
setState(() => devices[d.id] = d);
_log("[deviceFound] ${d.name} (${d.id})");
}
if (type.contains("scanStarted")) {
setState(() => scanning = true);
} else if (type.contains("scanStopped")) {
setState(() => scanning = false);
} else if (type.contains("connected")) {
setState(() => connected = true);
} else if (type.contains("disconnected")) {
setState(() {
connected = false;
ready = false;
});
} else if (type.contains("ready")) {
setState(() => ready = true);
}
}
// ---------------- ACTIONS ----------------
Future<void> _startScan() async {
final hasPermission = await _checkPermissions();
if (!hasPermission) return;
setState(() {
devices.clear();
selected = null;
scanning = true;
status = "Iniciando scan...";
});
_log(">>> startScan($transport)");
await bt.startScan(transport: transport);
}
Future<void> _stopScan() async {
_log(">>> stopScan($transport)");
await bt.stopScan(transport: transport);
setState(() => scanning = false);
}
Future<void> _snapshot() async {
final hasPermission = await _checkPermissions();
if (!hasPermission) return;
_log(">>> getDiscoveredDevices($transport)");
final list = await bt.getDiscoveredDevices(transport: transport);
setState(() {
for (final d in list) devices[d.id] = d;
});
_log("Snapshot: ${list.length} devices");
}
Future<void> _connectSelected() async {
final d = selected;
if (d == null) {
_log("⚠️ Selecione um device primeiro");
return;
}
if (Platform.isAndroid) {
if (!await Permission.bluetoothConnect.request().isGranted) {
_log("❌ Permissão de conexão Bluetooth negada");
return;
}
}
final profile = PrinterProfiles.zebra;
_log(">>> configure(profile=zebra)");
await bt.configure(profile);
_log(">>> connect(${d.id}, $transport)");
await bt.connect(deviceId: d.id, transport: transport);
}
Future<void> _disconnect() async {
_log(">>> disconnect($transport)");
await bt.disconnect(transport: transport);
}
Future<void> _printBigAutoCtb() async {
if (!ready) {
_log("⚠️ Ainda não está READY (aguarde 'ready')");
return;
}
// Aqui você pode passar um Map fake, se quiser parametrizar no futuro:
final fakeData = {
"ait": "CTB-2026-000123",
"placa": "ABC1D23",
"dataHora": "05/02/2026 10:32",
};
final bytesList = await bigStrategy.generateBytes(fakeData);
final data = Uint8List.fromList(bytesList);
_log(">>> printRawBytes(BIG ${data.length} bytes, $transport)");
await bt.printRawBytes(data, transport: transport);
}
// ---------------- UI ----------------
@override
Widget build(BuildContext context) {
final list = devices.values.toList()
..sort((a, b) => a.name.toLowerCase().compareTo(b.name.toLowerCase()));
return Scaffold(
appBar: AppBar(
title: const Text("BlueThermalPlus - Test App"),
actions: [
Padding(
padding: const EdgeInsets.only(right: 12),
child: Center(
child: Row(
children: [
const Text("Transport: "),
const SizedBox(width: 6),
DropdownButton<PrinterTransport>(
value: transport,
items: const [
DropdownMenuItem(
value: PrinterTransport.ble,
child: Text("BLE"),
),
DropdownMenuItem(
value: PrinterTransport.classic,
child: Text("Classic"),
),
],
onChanged: (v) {
if (v == null) return;
setState(() {
transport = v;
devices.clear();
selected = null;
scanning = false;
connected = false;
ready = false;
status = "Transport alterado para ${v.name}";
});
_log("=== Transport => ${v.name} ===");
},
),
],
),
),
),
],
),
body: Column(
children: [
Padding(
padding: const EdgeInsets.all(12),
child: _StatusCard(
status: status,
scanning: scanning,
connected: connected,
ready: ready,
transport: transport,
),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 12),
child: Wrap(
spacing: 8,
runSpacing: 8,
children: [
FilledButton.icon(
onPressed: scanning ? null : _startScan,
icon: const Icon(Icons.radar),
label: const Text("Start scan"),
),
OutlinedButton.icon(
onPressed: scanning ? _stopScan : null,
icon: const Icon(Icons.stop),
label: const Text("Stop scan"),
),
OutlinedButton.icon(
onPressed: _snapshot,
icon: const Icon(Icons.refresh),
label: const Text("Snapshot"),
),
FilledButton.icon(
onPressed: selected == null ? null : _connectSelected,
icon: const Icon(Icons.link),
label: const Text("Connect"),
),
OutlinedButton.icon(
onPressed: connected ? _disconnect : null,
icon: const Icon(Icons.link_off),
label: const Text("Disconnect"),
),
// ✅ NOVO BOTÃO: impressão grande
FilledButton.icon(
onPressed: ready ? _printBigAutoCtb : null,
icon: const Icon(Icons.receipt_long),
label: const Text("Print BIG (Auto CTB)"),
),
],
),
),
const SizedBox(height: 8),
Expanded(
child: Row(
children: [
Expanded(
flex: 2,
child: _DeviceList(
devices: list,
selectedId: selected?.id,
onSelect: (d) {
setState(() => selected = d);
_log("Selecionado: ${d.name} (${d.id})");
},
),
),
Expanded(flex: 2, child: _LogPanel(logs: logs)),
],
),
),
],
),
);
}
}
// ==================== STRATEGY (SEU CÓDIGO) ====================
abstract class IPrinterStrategy {
Future<List<int>> generateBytes(dynamic data);
}
class AutoCtbTestPrinterStrategy implements IPrinterStrategy {
@override
Future<List<int>> generateBytes(dynamic data) async {
final cpcl = <int>[];
void add(String s) => cpcl.addAll(s.codeUnits);
// Começo "limpo"
add("\r\n");
add("\r\n");
add("! 0 200 200 4000 1\r\n");
add("PAGE-WIDTH 800\r\n");
add("JOURNAL\r\n");
add("T 5 0 30 30 TESTE DE IMPRESSAO 2\r\n");
// add("T 7 0 30 80 Modulo Clean Arch\r\n");
// add("T 7 0 30 120 Modulo Clean Arch\r\n");
int y = 80;
void row(String produto, String valor) {
add("T 7 0 30 $y $produto: $valor\r\n");
y += 30;
}
row("Arroz 5kg", "R\$ 28,90");
row("Feijão carioca 1kg", "R\$ 8,50");
row("Macarrão espaguete", "R\$ 4,20");
row("Óleo de soja 900ml", "R\$ 7,80");
row("Açúcar refinado 1kg", "R\$ 5,10");
row("Café torrado 500g", "R\$ 14,90");
row("Leite integral 1L", "R\$ 4,80");
row("Margarina 500g", "R\$ 6,40");
row("Farinha de trigo 1kg", "R\$ 4,60");
row("Biscoito recheado", "R\$ 3,90");
row("Molho de tomate", "R\$ 2,70");
row("Refrigerante 2L", "R\$ 8,99");
row("Suco de laranja 1L", "R\$ 6,50");
row("Queijo muçarela 300g", "R\$ 12,80");
row("Presunto fatiado", "R\$ 9,40");
row("Frango congelado kg", "R\$ 11,90");
row("Carne moída kg", "R\$ 24,90");
row("Ovos dúzia", "R\$ 9,20");
row("Pão de forma", "R\$ 7,30");
row("Manteiga 200g", "R\$ 8,60");
row("Iogurte natural", "R\$ 3,50");
row("Cereal matinal", "R\$ 13,40");
row("Achocolatado", "R\$ 6,90");
row("Sabão em pó", "R\$ 15,80");
row("Amaciante roupas", "R\$ 12,70");
row("Detergente líquido", "R\$ 2,30");
row("Papel higiênico 12un", "R\$ 18,90");
row("Shampoo", "R\$ 14,50");
row("Condicionador", "R\$ 15,20");
row("Creme dental", "R\$ 6,10");
row("Escova de dentes", "R\$ 5,90");
row("Sabonete", "R\$ 2,20");
row("Água mineral 1,5L", "R\$ 2,80");
row("Chocolate barra", "R\$ 7,50");
row("Sorvete 2L", "R\$ 19,90");
row("Pizza congelada", "R\$ 17,80");
row("Hambúrguer pacote", "R\$ 13,60");
row("Batata frita", "R\$ 9,90");
row("Milho verde lata", "R\$ 4,10");
row("Ervilha lata", "R\$ 4,00");
row("Atum lata", "R\$ 8,30");
row("Sardinha lata", "R\$ 6,70");
row("Maionese", "R\$ 7,20");
row("Ketchup", "R\$ 6,40");
row("Mostarda", "R\$ 5,80");
row("Tempero completo", "R\$ 4,90");
row("Sal refinado", "R\$ 2,10");
row("Pimenta molho", "R\$ 6,00");
row("Bala sortida", "R\$ 3,20");
row("Chiclete pacote", "R\$ 2,90");
row("Produto ULTIMO", "R\$ 20,00");
row("Arroz 5kg", "R\$ 28,90");
row("Feijão carioca 1kg", "R\$ 8,50");
row("Macarrão espaguete", "R\$ 4,20");
row("Óleo de soja 900ml", "R\$ 7,80");
row("Açúcar refinado 1kg", "R\$ 5,10");
row("Café torrado 500g", "R\$ 14,90");
row("Leite integral 1L", "R\$ 4,80");
row("Margarina 500g", "R\$ 6,40");
row("Farinha de trigo 1kg", "R\$ 4,60");
row("Biscoito recheado", "R\$ 3,90");
row("Molho de tomate", "R\$ 2,70");
row("Refrigerante 2L", "R\$ 8,99");
row("Suco de laranja 1L", "R\$ 6,50");
row("Queijo muçarela 300g", "R\$ 12,80");
row("Presunto fatiado", "R\$ 9,40");
row("Frango congelado kg", "R\$ 11,90");
row("Carne moída kg", "R\$ 24,90");
row("Ovos dúzia", "R\$ 9,20");
row("Pão de forma", "R\$ 7,30");
row("Manteiga 200g", "R\$ 8,60");
row("Iogurte natural", "R\$ 3,50");
row("Cereal matinal", "R\$ 13,40");
row("Achocolatado", "R\$ 6,90");
row("Sabão em pó", "R\$ 15,80");
row("Amaciante roupas", "R\$ 12,70");
row("Detergente líquido", "R\$ 2,30");
row("Papel higiênico 12un", "R\$ 18,90");
row("Shampoo", "R\$ 14,50");
row("Condicionador", "R\$ 15,20");
row("Creme dental", "R\$ 6,10");
row("Escova de dentes", "R\$ 5,90");
row("Sabonete", "R\$ 2,20");
row("Água mineral 1,5L", "R\$ 2,80");
row("Chocolate barra", "R\$ 7,50");
row("Sorvete 2L", "R\$ 19,90");
row("Pizza congelada", "R\$ 17,80");
row("Hambúrguer pacote", "R\$ 13,60");
row("Batata frita", "R\$ 9,90");
row("Milho verde lata", "R\$ 4,10");
row("Ervilha lata", "R\$ 4,00");
row("Atum lata", "R\$ 8,30");
row("Sardinha lata", "R\$ 6,70");
row("Maionese", "R\$ 7,20");
row("Ketchup", "R\$ 6,40");
row("Mostarda", "R\$ 5,80");
row("Tempero completo", "R\$ 4,90");
row("Sal refinado", "R\$ 2,10");
row("Pimenta molho", "R\$ 6,00");
row("Bala sortida", "R\$ 3,20");
row("Chiclete pacote", "R\$ 2,90");
row("Produto ULTIMO", "R\$ 20,00");
add("LINE 30 160 750 160 3\r\n");
add("BARCODE 128 1 1 50 30 400 123456789\r\n");
add("PRINT\r\n");
return cpcl;
}
}
// class AutoCtbTestPrinterStrategy implements IPrinterStrategy {
// @override
// Future<List<int>> generateBytes(dynamic data) async {
// final cpcl = <int>[];
// // Helper para converter string em bytes CPCL
// void add(String s) => cpcl.addAll(s.codeUnits);
//
// // --- COMANDOS INICIAIS ---
// add("\r\n");
// add("! 0 200 200 4000 1\r\n");
// add("PAGE-WIDTH 800\r\n");
// add("JOURNAL\r\n"); // Modo Journal para impressão contínua
//
// // --- FUNÇÃO AJUDANTE PARA TEXTO MULTILINHA (NO DART) ---
// // Isso substitui o comando MULTILINE que trava a impressora.
// // Retorna o novo Y após escrever as linhas.
// int printMultiline(String text, int x, int startY, int maxCharsPerLine) {
// int currentY = startY;
// List<String> words = text.split(' ');
// String currentLine = "";
//
// for (var word in words) {
// if ((currentLine + word).length > maxCharsPerLine) {
// // Imprime a linha acumulada
// add("T 7 0 $x $currentY $currentLine\r\n");
// currentY += 30; // Avança 30px para baixo
// currentLine = "";
// }
// currentLine += "$word ";
// }
// // Imprime o que sobrou
// if (currentLine.isNotEmpty) {
// add("T 7 0 $x $currentY $currentLine\r\n");
// currentY += 30;
// }
// return currentY;
// }
//
// // =================================================
// // HEADER
// // =================================================
// add("T 5 1 0 20 NOTIFICACAO DE AUTUACAO\r\n");
// add("T 7 0 0 60 AUTO CTB - TESTE\r\n");
// add("T 7 0 30 110 AIT: CTB-2026-000123\r\n");
// add("T 7 0 30 140 DATA/HORA: 05/02/2026 10:32\r\n");
// add("LINE 30 175 750 175 3\r\n");
//
// // =================================================
// // VEICULO
// // =================================================
// add("T 5 0 30 195 VEICULO\r\n");
// add("T 7 0 30 230 PLACA: ABC1D23\r\n");
// add("T 7 0 30 260 MARCA/MODELO: FIAT ARGO\r\n");
// add("T 7 0 30 290 COR: BRANCO\r\n");
// add("T 7 0 30 320 ANO: 2022\r\n");
// add("LINE 30 350 750 350 3\r\n");
//
// // =================================================
// // CONDUTOR
// // =================================================
// add("T 5 0 30 370 CONDUTOR\r\n");
// add("T 7 0 30 405 NOME: JOAO DA SILVA\r\n");
// add("T 7 0 30 435 CNH: 12345678900\r\n");
// add("LINE 30 465 750 465 3\r\n");
//
// // =================================================
// // LOCAL
// // =================================================
// add("T 5 0 30 485 LOCAL\r\n");
// add("T 7 0 30 520 AV PAULISTA, 1000 - SP\r\n");
// add("T 7 0 30 550 SENTIDO: CENTRO -> JARDINS\r\n");
// add("LINE 30 580 750 580 3\r\n");
//
// // =================================================
// // INFRACAO
// // =================================================
// add("T 5 0 30 600 INFRACAO\r\n");
// add("T 7 0 30 635 COD: 74550\r\n");
// add("T 7 0 30 665 ART: 181 XVIII\r\n");
// add("T 7 0 30 695 GRAV: MEDIA\r\n");
//
// // SUBSTITUÍDO: MULTILINE nativo por lógica manual
// // Texto longo da infração
// String textoInfracao = "ESTACIONAR EM LOCAL PROIBIDO SINALIZADO";
// // Imprime e calcula onde a linha termina (baseado em max 40 caracteres por linha)
// int yAposInfracao = printMultiline(textoInfracao, 30, 725, 40);
//
// // Ajustamos a linha abaixo baseada em onde o texto acabou
// // (Ou mantemos fixa se soubermos que não vai estourar)
// add("LINE 30 820 750 820 3\r\n");
//
// // =================================================
// // MEDICOES
// // =================================================
// add("T 5 0 30 840 MEDICOES\r\n");
// add("T 7 0 30 875 VEL PERMITIDA: 60 KM/H\r\n");
// add("T 7 0 30 905 VEL AFERIDA: ---\r\n");
// add("LINE 30 935 750 935 3\r\n");
//
// // =================================================
// // OBSERVACOES
// // =================================================
// add("T 5 0 30 955 OBSERVACOES\r\n");
//
// // SUBSTITUÍDO: MULTILINE nativo por lógica manual
// String textoObs = "IMPRESSAO DE TESTE DO MODULO CLEAN ARCH";
// printMultiline(textoObs, 30, 985, 40);
//
// add("LINE 30 1080 750 1080 3\r\n");
//
// // =================================================
// // AGENTE
// // =================================================
// add("T 5 0 30 1100 AGENTE\r\n");
// add("T 7 0 30 1135 AGENTE MARIA PEREIRA\r\n");
// add("T 7 0 30 1165 MAT: 009988\r\n");
//
// // =================================================
// // 2ª VIA - INFORMACOES AO USUARIO
// // =================================================
// add("LINE 30 1200 750 1200 3\r\n");
//
// // Removi CENTER/LEFT para garantir estabilidade, usando coordenada X centralizada manualmente ou 0
// // CENTER as vezes conflita com coordenadas explícitas em alguns firmwares
// add("T 5 0 100 1220 2a VIA - INFORMACOES AO USUARIO\r\n");
//
// String textoLegal = "DOCUMENTO DE TESTE. CONFIRA OS DADOS IMPRESSOS.";
// printMultiline(textoLegal, 30, 1260, 40);
//
// // =================================================
// // BARCODE DE TESTE
// // =================================================
// // Aumentei um pouco o Y para garantir que não sobreponha o texto acima
// add("BARCODE 128 1 1 60 30 1350 CTB2026000123\r\n");
//
// // Finaliza a impressão
// add("PRINT\r\n");
//
// return cpcl;
// }
// }
// ==================== UI WIDGETS (IGUAIS) ====================
class _StatusCard extends StatelessWidget {
final String status;
final bool scanning;
final bool connected;
final bool ready;
final PrinterTransport transport;
const _StatusCard({
required this.status,
required this.scanning,
required this.connected,
required this.ready,
required this.transport,
});
@override
Widget build(BuildContext context) {
final icon = connected ? Icons.print : Icons.bluetooth_searching;
return Card(
child: Padding(
padding: const EdgeInsets.all(12),
child: Row(
children: [
Icon(icon, size: 36),
const SizedBox(width: 12),
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
"Status",
style: Theme.of(context).textTheme.titleMedium,
),
const SizedBox(height: 4),
Text(status),
const SizedBox(height: 8),
Wrap(
spacing: 8,
children: [
Chip(label: Text("transport: ${transport.name}")),
Chip(label: Text(scanning ? "scanning" : "idle")),
Chip(
label: Text(connected ? "connected" : "disconnected"),
),
Chip(label: Text(ready ? "ready" : "not ready")),
],
),
],
),
),
],
),
),
);
}
}
class _DeviceList extends StatelessWidget {
final List<PrinterDevice> devices;
final String? selectedId;
final void Function(PrinterDevice d) onSelect;
const _DeviceList({
required this.devices,
required this.selectedId,
required this.onSelect,
});
@override
Widget build(BuildContext context) {
return Card(
margin: const EdgeInsets.fromLTRB(12, 0, 6, 12),
child: Column(
children: [
const ListTile(
title: Text("Dispositivos"),
subtitle: Text("Clique para selecionar"),
dense: true,
),
const Divider(height: 1),
Expanded(
child: devices.isEmpty
? const Center(child: Text("Nenhum device ainda"))
: ListView.builder(
itemCount: devices.length,
itemBuilder: (context, i) {
final d = devices[i];
final selected = d.id == selectedId;
return ListTile(
selected: selected,
leading: const Icon(Icons.bluetooth),
title: Text(d.name),
subtitle: Text(d.id),
trailing: selected
? const Icon(Icons.check_circle)
: null,
onTap: () => onSelect(d),
);
},
),
),
],
),
);
}
}
class _LogPanel extends StatelessWidget {
final List<String> logs;
const _LogPanel({required this.logs});
@override
Widget build(BuildContext context) {
return Card(
margin: const EdgeInsets.fromLTRB(6, 0, 12, 12),
child: Column(
children: [
const ListTile(
title: Text("Logs / Events"),
subtitle: Text("Realtime do plugin"),
dense: true,
),
const Divider(height: 1),
Expanded(
child: logs.isEmpty
? const Center(child: Text("Sem logs ainda"))
: ListView.builder(
itemCount: logs.length,
itemBuilder: (context, i) {
final l = logs[i];
return Padding(
padding: const EdgeInsets.symmetric(
horizontal: 8,
vertical: 4,
),
child: Text(
l,
style: const TextStyle(
fontFamily: "monospace",
fontSize: 12,
),
),
);
},
),
),
],
),
);
}
}Metadata
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downloads
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unverified uploader
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Metadata
Plugin para da suporte a impressão android e IOS em impressoras termicas
Homepage
Repository (GitHub)
View/report issues
Documentation
License
MIT (license)
Dependencies
flutter, permission_handler, plugin_platform_interface
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