83 lines
2.1 KiB
Dart
83 lines
2.1 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:mobile_scanner/mobile_scanner.dart';
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class QRCodeScannerPage extends StatefulWidget {
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const QRCodeScannerPage({Key? key}) : super(key: key);
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@override
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State<QRCodeScannerPage> createState() => _QRCodeScannerPageState();
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}
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class _QRCodeScannerPageState extends State<QRCodeScannerPage> {
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bool lido = false;
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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(title: const Text('Leia o QR Code')),
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body: Stack(
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children: [
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// 📷 Câmera
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MobileScanner(
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fit: BoxFit.cover,
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onDetect: (capture) {
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if (lido) return;
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final barcode = capture.barcodes.firstOrNull;
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final value = barcode?.rawValue;
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if (value == null) return;
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lido = true;
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debugPrint('[LOG] Leitura QRCode: $value');
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Navigator.pop(context, value);
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},
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),
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// 🕶️ Overlay com janela central
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const Positioned.fill(
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child: ScannerOverlay(),
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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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class ScannerOverlay extends StatelessWidget {
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const ScannerOverlay({super.key});
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@override
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Widget build(BuildContext context) {
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return LayoutBuilder(builder: (context, constraints) {
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final width = constraints.maxWidth;
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final height = constraints.maxHeight;
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final scanAreaSize = width * 0.6;
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final left = (width - scanAreaSize) / 2;
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final top = (height - scanAreaSize) / 2;
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return Stack(
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children: [
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// Camada escura
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Container(color: Colors.black.withOpacity(0.5)),
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// Janela central
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Positioned(
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left: left,
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top: top,
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width: scanAreaSize,
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height: scanAreaSize,
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child: Container(
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decoration: BoxDecoration(
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color: Colors.transparent,
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border: Border.all(color: Colors.white, width: 2),
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borderRadius: BorderRadius.circular(16),
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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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} |