screen.dart(with qr)

Zuhairy_Harry

Jun 13th, 2025

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import 'package:einventorycomputer/modules/home/screen/location/location.dart';
import 'package:einventorycomputer/services/auth.dart';
import 'package:flutter/material.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:einventorycomputer/modules/home/screen/home.dart';
import 'package:einventorycomputer/modules/home/screen/devices/inventory.dart';
import 'package:einventorycomputer/modules/home/screen/settings/settings.dart';
import 'package:einventorycomputer/modules/home/screen/user/account.dart';
import 'package:einventorycomputer/modules/home/screen/devices/add_device.dart';
import 'package:mobile_scanner/mobile_scanner.dart';
import 'package:einventorycomputer/modules/home/screen/devices/device_details.dart';
class ScreenPage extends StatefulWidget {
@override
_ScreenPageState createState() => _ScreenPageState();
}
class _ScreenPageState extends State<ScreenPage> with TickerProviderStateMixin {
final AuthService _auth = AuthService();
int _selectedIndex = 0;
String? _username;
String? _profileImageUrl;
late AnimationController _drawerAnimationController;
late AnimationController _fabAnimationController;
final List<String> _titles = [
"Home",
"Inventory",
"Add Device",
"QR Scanner",
"Settings",
"Account",
"Location",
];
// Method to navigate to inventory page
void _navigateToInventory() {
setState(() {
_selectedIndex = 1; // Inventory page index
});
}
// Define which indices are in the bottom navigation
final List<int> _bottomNavIndexes = [0, 1, 5, 6];
@override
void initState() {
super.initState();
_loadUserData();
_drawerAnimationController = AnimationController(
duration: const Duration(milliseconds: 300),
vsync: this,
);
_fabAnimationController = AnimationController(
duration: const Duration(milliseconds: 300),
vsync: this,
);
_fabAnimationController.forward();
}
@override
void dispose() {
_drawerAnimationController.dispose();
_fabAnimationController.dispose();
super.dispose();
}
Future<void> _loadUserData() async {
final user = FirebaseAuth.instance.currentUser;
if (user != null) {
try {
final doc = await FirebaseFirestore.instance.collection('users').doc(user.uid).get();
if (doc.exists && mounted) {
final data = doc.data();
setState(() {
_username = data?['username'] ?? 'User';
_profileImageUrl = data?['profileImageUrl'];
});
print('Profile image URL: $_profileImageUrl');
}
} catch (e) {
print('Error loading user data: $e');
}
}
}
void _onSelect(int index) {
if (_selectedIndex != index) {
setState(() {
_selectedIndex = index;
});
// Refresh user data when navigating to Account page
if (index == 5) { // Account page index (updated)
_loadUserData();
}
}
Navigator.pop(context); // Close drawer
}
void _onFabPressed() {
// Add a small animation when pressed
_fabAnimationController.reverse().then((_) {
_fabAnimationController.forward();
});
setState(() {
_selectedIndex = 2; // Navigate to Add Device page (index 2)
});
}
// New method to handle QR scanner FAB press
void _onQRScannerPressed() {
_fabAnimationController.reverse().then((_) {
_fabAnimationController.forward();
});
setState(() {
_selectedIndex = 3; // Navigate to QR Scanner page (index 3)
});
}
Widget _buildProfileImage() {
return Container(
width: 80,
height: 80,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(20),
boxShadow: [
BoxShadow(
color: const Color(0xFFFFC727).withOpacity(0.3),
blurRadius: 12,
offset: const Offset(0, 4),
),
],
),
child: ClipRRect(
borderRadius: BorderRadius.circular(20),
child: Container(
width: 80,
height: 80,
color: const Color(0xFFFFC727),
child: _profileImageUrl != null && _profileImageUrl!.isNotEmpty
? Image.network(
_profileImageUrl!,
width: 80,
height: 80,
fit: BoxFit.cover,
errorBuilder: (context, error, stackTrace) {
print('Error loading image: $error');
return const Icon(
Icons.person_rounded,
size: 40,
color: Color(0xFF212529),
);
},
loadingBuilder: (context, child, loadingProgress) {
if (loadingProgress == null) return child;
return const Center(
child: CircularProgressIndicator(
valueColor: AlwaysStoppedAnimation<Color>(Color(0xFF212529)),
strokeWidth: 2,
),
);
},
)
: const Icon(
Icons.person_rounded,
size: 40,
color: Color(0xFF212529),
),
),
),
);
}
Widget _getCurrentPage() {
switch (_selectedIndex) {
case 0:
return HomePage();
case 1:
return InventoryPage();
case 2:
return AddDevicePage(onNavigateToInventory: _navigateToInventory);
case 3:
return QRScannerPage();
case 4:
return SettingsPage();
case 5:
return AccountPage();
case 6:
return LocationPage();
default:
return HomePage();
}
}
@override
Widget build(BuildContext context) {
final isBottomNavPage = _bottomNavIndexes.contains(_selectedIndex);
final safeCurrentIndex = _bottomNavIndexes.indexWhere((i) => i == _selectedIndex);
final isQRScannerPage = _selectedIndex == 3;
return Scaffold(
backgroundColor: const Color(0xFFF8F9FA),
appBar: AppBar(
title: Text(
_titles[_selectedIndex],
style: const TextStyle(
fontFamily: 'SansRegular',
color: Color(0xFF212529),
fontWeight: FontWeight.w600,
fontSize: 20,
),
),
backgroundColor: Colors.transparent,
elevation: 0,
iconTheme: const IconThemeData(color: Color(0xFF212529)),
leading: Builder(
builder: (context) => IconButton(
icon: Container(
padding: const EdgeInsets.all(8),
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(12),
boxShadow: [
BoxShadow(
color: Colors.black.withOpacity(0.1),
blurRadius: 8,
offset: const Offset(0, 2),
),
],
),
child: const Icon(
Icons.menu_rounded,
color: Color(0xFF212529),
size: 20,
),
),
onPressed: () => Scaffold.of(context).openDrawer(),
),
),
),
drawer: Drawer(
backgroundColor: Colors.white,
elevation: 0,
child: SafeArea(
child: Column(
children: [
// Header Section
Container(
width: double.infinity,
padding: const EdgeInsets.all(24),
decoration: const BoxDecoration(
color: Color(0xFF212529),
borderRadius: BorderRadius.only(
bottomLeft: Radius.circular(24),
bottomRight: Radius.circular(24),
),
),
child: Column(
children: [
_buildProfileImage(),
const SizedBox(height: 16),
Text(
_username ?? 'Loading...',
style: const TextStyle(
fontFamily: 'SansRegular',
fontWeight: FontWeight.w600,
fontSize: 18,
color: Color(0xFFFFC727),
),
),
const SizedBox(height: 4),
Text(
FirebaseAuth.instance.currentUser?.email ?? '',
style: const TextStyle(
fontFamily: 'SansRegular',
fontSize: 14,
color: Color(0xFFADB5BD),
),
overflow: TextOverflow.ellipsis,
),
],
),
),
const SizedBox(height: 24),
// Navigation Items
Expanded(
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 16),
child: Column(
children: [
_buildDrawerItem(Icons.home_outlined, Icons.home_rounded, "Home", 0),
_buildDrawerItem(Icons.inventory_2_outlined, Icons.inventory_2_rounded, "Inventory", 1),
_buildDrawerItem(Icons.add_box_outlined, Icons.add_box_rounded, "Add Device", 2),
_buildDrawerItem(Icons.qr_code_scanner_outlined, Icons.qr_code_scanner_rounded, "QR Scanner", 3),
_buildDrawerItem(Icons.settings_outlined, Icons.settings_rounded, "Settings", 4),
_buildDrawerItem(Icons.person_outline_rounded, Icons.person_rounded, "Account", 5),
_buildDrawerItem(Icons.location_city_outlined, Icons.location_city_rounded, "Location", 6),
],
),
),
),
// Logout Section
Padding(
padding: const EdgeInsets.all(24),
child: Container(
width: double.infinity,
decoration: BoxDecoration(
gradient: const LinearGradient(
colors: [Color(0xFF212529), Color(0xFF343A40)],
begin: Alignment.topLeft,
end: Alignment.bottomRight,
),
borderRadius: BorderRadius.circular(16),
boxShadow: [
BoxShadow(
color: Colors.black.withOpacity(0.1),
blurRadius: 12,
offset: const Offset(0, 4),
),
],
),
child: Material(
color: Colors.transparent,
child: InkWell(
borderRadius: BorderRadius.circular(16),
onTap: () async {
await _auth.signOut();
},
child: Padding(
padding: const EdgeInsets.symmetric(vertical: 16, horizontal: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Container(
padding: const EdgeInsets.all(8),
decoration: BoxDecoration(
color: const Color(0xFFFFC727).withOpacity(0.2),
borderRadius: BorderRadius.circular(8),
),
child: const Icon(
Icons.logout_rounded,
color: Color(0xFFFFC727),
size: 20,
),
),
const SizedBox(width: 12),
const Text(
"Sign Out",
style: TextStyle(
fontSize: 16,
fontWeight: FontWeight.w600,
color: Color(0xFFFFC727),
fontFamily: 'SansRegular',
),
),
],
),
),
),
),
),
),
],
),
),
),
body: Stack(
children: [
_getCurrentPage(),
// Floating Action Buttons
if (isBottomNavPage)
Positioned(
bottom: 10,
right: 24,
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
// QR Scanner FAB
ScaleTransition(
scale: _fabAnimationController,
child: Container(
margin: const EdgeInsets.only(bottom: 16),
decoration: BoxDecoration(
gradient: const LinearGradient(
colors: [Color(0xFF007BFF), Color(0xFF0056B3)],
begin: Alignment.topLeft,
end: Alignment.bottomRight,
),
borderRadius: BorderRadius.circular(20),
boxShadow: [
BoxShadow(
color: const Color(0xFF007BFF).withOpacity(0.4),
blurRadius: 16,
offset: const Offset(0, 6),
),
],
),
child: Material(
color: Colors.transparent,
child: InkWell(
borderRadius: BorderRadius.circular(20),
onTap: _onQRScannerPressed,
child: Container(
width: 56,
height: 56,
child: const Icon(
Icons.qr_code_scanner_rounded,
color: Colors.white,
size: 28,
),
),
),
),
),
),
// Add Device FAB
ScaleTransition(
scale: _fabAnimationController,
child: Container(
decoration: BoxDecoration(
gradient: const LinearGradient(
colors: [Color(0xFFFFC727), Color(0xFFFFD54F)],
begin: Alignment.topLeft,
end: Alignment.bottomRight,
),
borderRadius: BorderRadius.circular(20),
boxShadow: [
BoxShadow(
color: const Color(0xFFFFC727).withOpacity(0.4),
blurRadius: 16,
offset: const Offset(0, 6),
),
],
),
child: Material(
color: Colors.transparent,
child: InkWell(
borderRadius: BorderRadius.circular(20),
onTap: _onFabPressed,
child: Container(
width: 56,
height: 56,
child: const Icon(
Icons.add_rounded,
color: Color(0xFF212529),
size: 28,
),
),
),
),
),
),
],
),
),
],
),
bottomNavigationBar: isBottomNavPage
? Container(
margin: const EdgeInsets.all(16),
decoration: BoxDecoration(
color: const Color(0xFF212529),
borderRadius: BorderRadius.circular(24),
boxShadow: [
BoxShadow(
color: Colors.black.withOpacity(0.15),
blurRadius: 20,
offset: const Offset(0, 8),
),
],
),
child: ClipRRect(
borderRadius: BorderRadius.circular(24),
child: BottomNavigationBar(
currentIndex: safeCurrentIndex,
selectedItemColor: const Color(0xFFFFC727),
unselectedItemColor: const Color(0xFF6C757D),
backgroundColor: const Color(0xFF212529),
type: BottomNavigationBarType.fixed,
elevation: 0,
onTap: (index) {
setState(() {
_selectedIndex = _bottomNavIndexes[index];
});
},
selectedLabelStyle: const TextStyle(
fontFamily: 'SansRegular',
fontWeight: FontWeight.w600,
fontSize: 12,
),
unselectedLabelStyle: const TextStyle(
fontFamily: 'SansRegular',
fontWeight: FontWeight.w400,
fontSize: 12,
),
items: [
BottomNavigationBarItem(
icon: _buildBottomNavIcon(Icons.home_outlined, 0, safeCurrentIndex),
activeIcon: _buildBottomNavIcon(Icons.home_rounded, 0, safeCurrentIndex),
label: "Home",
),
BottomNavigationBarItem(
icon: _buildBottomNavIcon(Icons.inventory_2_outlined, 1, safeCurrentIndex),
activeIcon: _buildBottomNavIcon(Icons.inventory_2_rounded, 1, safeCurrentIndex),
label: "Inventory",
),
BottomNavigationBarItem(
icon: _buildBottomNavIcon(Icons.person_outline_rounded, 2, safeCurrentIndex),
activeIcon: _buildBottomNavIcon(Icons.person_rounded, 2, safeCurrentIndex),
label: "Account",
),
BottomNavigationBarItem(
icon: _buildBottomNavIcon(Icons.location_city_outlined, 3, safeCurrentIndex),
activeIcon: _buildBottomNavIcon(Icons.location_city_rounded, 3, safeCurrentIndex),
label: "Location",
),
],
),
),
)
: null,
);
}
Widget _buildDrawerItem(IconData icon, IconData activeIcon, String title, int index) {
final isSelected = _selectedIndex == index;
return Container(
decoration: BoxDecoration(
color: isSelected ? const Color(0xFFFFC727).withOpacity(0.1) : Colors.transparent,
borderRadius: BorderRadius.circular(16),
),
child: Material(
color: Colors.transparent,
child: InkWell(
borderRadius: BorderRadius.circular(16),
onTap: () => _onSelect(index),
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 16),
child: Row(
children: [
Container(
padding: const EdgeInsets.all(8),
decoration: BoxDecoration(
color: isSelected
? const Color(0xFFFFC727)
: const Color(0xFFF8F9FA),
borderRadius: BorderRadius.circular(12),
),
child: Icon(
isSelected ? activeIcon : icon,
color: isSelected
? const Color(0xFF212529)
: const Color(0xFF6C757D),
size: 20,
),
),
const SizedBox(width: 16),
Expanded(
child: Text(
title,
style: TextStyle(
color: isSelected
? const Color(0xFF212529)
: const Color(0xFF6C757D),
fontFamily: 'SansRegular',
fontWeight: isSelected ? FontWeight.w600 : FontWeight.w400,
fontSize: 16,
),
),
),
if (isSelected)
Container(
width: 6,
height: 6,
decoration: const BoxDecoration(
color: Color(0xFFFFC727),
shape: BoxShape.circle,
),
),
],
),
),
),
),
);
}
Widget _buildBottomNavIcon(IconData icon, int index, int currentIndex) {
final isSelected = index == currentIndex;
return Container(
padding: const EdgeInsets.all(8),
decoration: BoxDecoration(
color: isSelected
? const Color(0xFFFFC727).withOpacity(0.2)
: Colors.transparent,
borderRadius: BorderRadius.circular(12),
),
child: Icon(
icon,
size: 24,
color: isSelected
? const Color(0xFFFFC727)
: const Color(0xFF6C757D),
),
);
}
}
// QR Scanner Page Widget
class QRScannerPage extends StatefulWidget {
@override
_QRScannerPageState createState() => _QRScannerPageState();
}
class _QRScannerPageState extends State<QRScannerPage> {
MobileScannerController cameraController = MobileScannerController();
bool isScanning = true;
String? scannedData;
@override
void dispose() {
cameraController.dispose();
super.dispose();
}
void _onDetect(BarcodeCapture capture) {
if (!isScanning) return;
final List<Barcode> barcodes = capture.barcodes;
if (barcodes.isNotEmpty) {
final String? code = barcodes.first.rawValue;
if (code != null) {
setState(() {
isScanning = false;
scannedData = code;
});
_showScannedDataDialog(code);
}
}
}
// Also modify the _showScannedDataDialog method to make the Process button more intuitive
void _showScannedDataDialog(String data) {
showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(16),
),
title: Row(
children: [
Container(
padding: const EdgeInsets.all(8),
decoration: BoxDecoration(
color: const Color(0xFFFFC727).withOpacity(0.2),
borderRadius: BorderRadius.circular(8),
),
child: const Icon(
Icons.qr_code_rounded,
color: Color(0xFF212529),
size: 24,
),
),
const SizedBox(width: 12),
const Text(
'QR Code Scanned',
style: TextStyle(
fontFamily: 'SansRegular',
fontWeight: FontWeight.w600,
fontSize: 18,
color: Color(0xFF212529),
),
),
],
),
content: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'Device Name:',
style: TextStyle(
fontFamily: 'SansRegular',
fontWeight: FontWeight.w600,
fontSize: 16,
color: Color(0xFF212529),
),
),
const SizedBox(height: 8),
Container(
width: double.infinity,
padding: const EdgeInsets.all(12),
decoration: BoxDecoration(
color: const Color(0xFFF8F9FA),
borderRadius: BorderRadius.circular(8),
border: Border.all(
color: const Color(0xFFE9ECEF),
width: 1,
),
),
child: Text(
data,
style: const TextStyle(
fontFamily: 'SansRegular',
fontSize: 16,
fontWeight: FontWeight.w600,
color: Color(0xFF495057),
),
),
),
const SizedBox(height: 12),
const Text(
'Tap "Find Device" to search for this device in your inventory.',
style: TextStyle(
fontFamily: 'SansRegular',
fontSize: 14,
color: Color(0xFF6C757D),
),
),
],
),
actions: [
TextButton(
onPressed: () {
Navigator.of(context).pop();
setState(() {
isScanning = true;
scannedData = null;
});
},
child: const Text(
'Scan Again',
style: TextStyle(
fontFamily: 'SansRegular',
color: Color(0xFF6C757D),
fontWeight: FontWeight.w500,
),
),
),
ElevatedButton(
onPressed: () {
Navigator.of(context).pop();
_processDeviceData(data);
},
style: ElevatedButton.styleFrom(
backgroundColor: const Color(0xFFFFC727),
foregroundColor: const Color(0xFF212529),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(8),
),
elevation: 0,
),
child: const Text(
'Find Device',
style: TextStyle(
fontFamily: 'SansRegular',
fontWeight: FontWeight.w600,
),
),
),
],
);
},
);
}
// Replace the _processDeviceData method in your QRScannerPage class
void _processDeviceData(String data) async {
try {
// Show loading indicator
showDialog(
context: context,
barrierDismissible: false,
builder: (BuildContext context) {
return const Center(
child: CircularProgressIndicator(
valueColor: AlwaysStoppedAnimation<Color>(Color(0xFFFFC727)),
),
);
},
);
// Search for device in Firestore
final querySnapshot = await FirebaseFirestore.instance
.collection('devices')
.where('name', isEqualTo: data.trim())
.get();
// Close loading dialog
Navigator.of(context).pop();
if (querySnapshot.docs.isNotEmpty) {
// Device found - get the first matching device
final deviceDoc = querySnapshot.docs.first;
final deviceData = deviceDoc.data();
deviceData['id'] = deviceDoc.id; // Add document ID to the data
// Navigate to device details page
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => DeviceDetailsPage(device: deviceData),
),
);
// Show success message
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text('Device found: ${deviceData['name']}'),
backgroundColor: const Color(0xFF28A745),
behavior: SnackBarBehavior.floating,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(8),
),
),
);
} else {
// Device not found
_showDeviceNotFoundDialog(data);
}
// Reset scanner state
setState(() {
isScanning = true;
scannedData = null;
});
} catch (e) {
// Close loading dialog if still open
Navigator.of(context).pop();
// Show error message
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text('Error searching for device: $e'),
backgroundColor: const Color(0xFFDC3545),
behavior: SnackBarBehavior.floating,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(8),
),
),
);
// Reset scanner state
setState(() {
isScanning = true;
scannedData = null;
});
}
}
// Add this new method to show device not found dialog
void _showDeviceNotFoundDialog(String deviceName) {
showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(16),
),
title: Row(
children: [
Container(
padding: const EdgeInsets.all(8),
decoration: BoxDecoration(
color: const Color(0xFFDC3545).withOpacity(0.2),
borderRadius: BorderRadius.circular(8),
),
child: const Icon(
Icons.error_outline,
color: Color(0xFFDC3545),
size: 24,
),
),
const SizedBox(width: 12),
const Text(
'Device Not Found',
style: TextStyle(
fontFamily: 'SansRegular',
fontWeight: FontWeight.w600,
fontSize: 18,
color: Color(0xFF212529),
),
),
],
),
content: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'No device found with the name "$deviceName".',
style: const TextStyle(
fontFamily: 'SansRegular',
fontSize: 16,
color: Color(0xFF495057),
),
),
const SizedBox(height: 12),
const Text(
'Please check the QR code or make sure the device is registered in the system.',
style: TextStyle(
fontFamily: 'SansRegular',
fontSize: 14,
color: Color(0xFF6C757D),
),
),
],
),
actions: [
TextButton(
onPressed: () {
Navigator.of(context).pop();
},
child: const Text(
'Scan Again',
style: TextStyle(
fontFamily: 'SansRegular',
color: Color(0xFF007BFF),
fontWeight: FontWeight.w500,
),
),
),
ElevatedButton(
onPressed: () {
Navigator.of(context).pop();
// Navigate to Add Device page with pre-filled name
// You can modify this based on your app's navigation structure
},
style: ElevatedButton.styleFrom(
backgroundColor: const Color(0xFFFFC727),
foregroundColor: const Color(0xFF212529),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(8),
),
elevation: 0,
),
child: const Text(
'Add Device',
style: TextStyle(
fontFamily: 'SansRegular',
fontWeight: FontWeight.w600,
),
),
),
],
);
},
);
}
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.black,
body: Stack(
children: [
// Camera View
MobileScanner(
controller: cameraController,
onDetect: _onDetect,
),
// Overlay with scanning frame
Container(
decoration: ShapeDecoration(
shape: QRScannerOverlayShape(
borderColor: const Color(0xFFFFC727),
borderRadius: 16,
borderLength: 30,
borderWidth: 4,
cutOutSize: 250,
),
),
),
// Top instruction
Positioned(
top: 100,
left: 0,
right: 0,
child: Container(
margin: const EdgeInsets.symmetric(horizontal: 24),
padding: const EdgeInsets.all(16),
decoration: BoxDecoration(
color: Colors.black.withOpacity(0.7),
borderRadius: BorderRadius.circular(12),
),
child: const Text(
'Position the QR code within the frame to scan device details',
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontSize: 16,
fontFamily: 'SansRegular',
fontWeight: FontWeight.w500,
),
),
),
),
// Bottom controls
Positioned(
bottom: 100,
left: 0,
right: 0,
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
// Flash toggle
Container(
decoration: BoxDecoration(
color: Colors.black.withOpacity(0.7),
borderRadius: BorderRadius.circular(30),
),
child: IconButton(
onPressed: () => cameraController.toggleTorch(),
icon: const Icon(
Icons.flash_on,
color: Colors.white,
size: 28,
),
),
),
// Switch camera
Container(
decoration: BoxDecoration(
color: Colors.black.withOpacity(0.7),
borderRadius: BorderRadius.circular(30),
),
child: IconButton(
onPressed: () => cameraController.switchCamera(),
icon: const Icon(
Icons.flip_camera_ios,
color: Colors.white,
size: 28,
),
),
),
],
),
),
],
),
);
}
}
// Custom QR Scanner Overlay Shape
class QRScannerOverlayShape extends ShapeBorder {
const QRScannerOverlayShape({
this.borderColor = Colors.white,
this.borderWidth = 3.0,
this.overlayColor = const Color.fromRGBO(0, 0, 0, 80),
this.borderRadius = 0,
this.borderLength = 40,
this.cutOutSize = 250,
});
final Color borderColor;
final double borderWidth;
final Color overlayColor;
final double borderRadius;
final double borderLength;
final double cutOutSize;
@override
EdgeInsetsGeometry get dimensions => const EdgeInsets.all(10);
@override
Path getInnerPath(Rect rect, {TextDirection? textDirection}) {
return Path()
..fillType = PathFillType.evenOdd
..addPath(getOuterPath(rect), Offset.zero);
}
@override
Path getOuterPath(Rect rect, {TextDirection? textDirection}) {
Path outerPath = Path()..addRect(rect);
Path innerPath = Path()
..addRRect(RRect.fromRectAndRadius(
Rect.fromCenter(
center: rect.center,
width: cutOutSize,
height: cutOutSize,
),
Radius.circular(borderRadius),
));
return Path.combine(PathOperation.difference, outerPath, innerPath);
}
@override
void paint(Canvas canvas, Rect rect, {TextDirection? textDirection}) {
final Paint paint = Paint()
..color = overlayColor
..style = PaintingStyle.fill;
canvas.drawPath(getOuterPath(rect), paint);
// Draw border corners
final Paint borderPaint = Paint()
..color = borderColor
..style = PaintingStyle.stroke
..strokeWidth = borderWidth;
final double halfBorderLength = borderLength / 2;
final Rect cutOutRect = Rect.fromCenter(
center: rect.center,
width: cutOutSize,
height: cutOutSize,
);
// Top-left corner
canvas.drawPath(
Path()
..moveTo(cutOutRect.left, cutOutRect.top + halfBorderLength)
..lineTo(cutOutRect.left, cutOutRect.top + borderRadius)
..quadraticBezierTo(cutOutRect.left, cutOutRect.top, cutOutRect.left + borderRadius, cutOutRect.top)
..lineTo(cutOutRect.left + halfBorderLength, cutOutRect.top),
borderPaint,
);
// Top-right corner
canvas.drawPath(
Path()
..moveTo(cutOutRect.right - halfBorderLength, cutOutRect.top)
..lineTo(cutOutRect.right - borderRadius, cutOutRect.top)
..quadraticBezierTo(cutOutRect.right, cutOutRect.top, cutOutRect.right, cutOutRect.top + borderRadius)
..lineTo(cutOutRect.right, cutOutRect.top + halfBorderLength),
borderPaint,
);
// Bottom-left corner
canvas.drawPath(
Path()
..moveTo(cutOutRect.left, cutOutRect.bottom - halfBorderLength)
..lineTo(cutOutRect.left, cutOutRect.bottom - borderRadius)
..quadraticBezierTo(cutOutRect.left, cutOutRect.bottom, cutOutRect.left + borderRadius, cutOutRect.bottom)
..lineTo(cutOutRect.left + halfBorderLength, cutOutRect.bottom),
borderPaint,
);
// Bottom-right corner
canvas.drawPath(
Path()
..moveTo(cutOutRect.right - halfBorderLength, cutOutRect.bottom)
..lineTo(cutOutRect.right - borderRadius, cutOutRect.bottom)
..quadraticBezierTo(cutOutRect.right, cutOutRect.bottom, cutOutRect.right, cutOutRect.bottom - borderRadius)
..lineTo(cutOutRect.right, cutOutRect.bottom - halfBorderLength),
borderPaint,
);
}
@override
ShapeBorder scale(double t) => QRScannerOverlayShape(
borderColor: borderColor,
borderWidth: borderWidth,
overlayColor: overlayColor,
borderRadius: borderRadius,
borderLength: borderLength,
cutOutSize: cutOutSize,
);
}

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