Add CompassSarList widget and refactor DetailedCompassDialog

- Introduced CompassSarList widget to display filtered SAR markers with distance and bearing information.
- Refactored DetailedCompassDialog to integrate CompassSarList and CompassContactList for better organization.
- Removed the previous filter dialog implementation and replaced it with a more modular CompassFilters widget.
- Simplified the handling of zoom and scale updates in the compass view.
- Cleaned up unused code related to previous implementations of contact and SAR marker lists.
This commit is contained in:
Janez T
2025-10-15 10:30:21 +02:00
parent 8af96c3fec
commit e831612a1a
15 changed files with 3261 additions and 3055 deletions

View File

@@ -580,6 +580,28 @@ class ContactTile extends StatelessWidget {
),
),
),
const SizedBox(height: 12),
SizedBox(
width: double.infinity,
child: OutlinedButton.icon(
onPressed: () {
connectionProvider.resetPath(contact.publicKey);
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text('Path reset for ${contact.displayName}. Next message will find a new route.'),
duration: const Duration(seconds: 3),
),
);
},
icon: const Icon(Icons.route),
label: const Text('Reset Path (Re-route)'),
style: OutlinedButton.styleFrom(
padding: const EdgeInsets.symmetric(vertical: 14),
side: BorderSide(color: _getTypeColor(contact.type, context)),
foregroundColor: _getTypeColor(contact.type, context),
),
),
),
],
// Room Login button for room contacts (except Public Channel)
if (contact.type == ContactType.room && contact.advName != 'Public Channel') ...[

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@@ -0,0 +1,176 @@
import 'dart:math';
import 'package:flutter/material.dart';
import 'package:geolocator/geolocator.dart';
import '../../../models/contact.dart';
/// Contact list section for the compass dialog.
/// Shows all contacts with location sorted by distance with bearing information.
class CompassContactList extends StatelessWidget {
final List<Contact> contacts;
final Position? position;
final Contact? selectedContact;
final ValueChanged<Contact?> onContactTap;
const CompassContactList({
super.key,
required this.contacts,
required this.position,
required this.selectedContact,
required this.onContactTap,
});
@override
Widget build(BuildContext context) {
if (contacts.isEmpty) {
return const SizedBox.shrink();
}
if (position == null) {
return const Text('Location unavailable');
}
// Calculate bearings and distances
final contactsWithBearing = contacts.map((contact) {
if (contact.displayLocation == null) return null;
final bearing = _calculateBearing(
position!.latitude,
position!.longitude,
contact.displayLocation!.latitude,
contact.displayLocation!.longitude,
);
final distance = _calculateDistance(
position!.latitude,
position!.longitude,
contact.displayLocation!.latitude,
contact.displayLocation!.longitude,
);
return {
'contact': contact,
'bearing': bearing,
'distance': distance,
};
}).whereType<Map<String, dynamic>>().toList();
// Sort by distance
contactsWithBearing.sort((a, b) =>
(a['distance'] as double).compareTo(b['distance'] as double));
return Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Padding(
padding: const EdgeInsets.only(left: 16, bottom: 8),
child: Text(
'Nearby Contacts',
style: Theme.of(context).textTheme.titleMedium?.copyWith(
fontWeight: FontWeight.bold,
),
),
),
...contactsWithBearing.map((item) {
final contact = item['contact'] as Contact;
final bearing = item['bearing'] as double;
final distance = item['distance'] as double;
return Container(
margin: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
decoration: BoxDecoration(
color: selectedContact == contact
? Theme.of(context).colorScheme.primaryContainer
: Theme.of(context).colorScheme.surfaceContainerHighest,
borderRadius: BorderRadius.circular(8),
border: selectedContact == contact
? Border.all(
color: Theme.of(context).colorScheme.primary,
width: 2,
)
: null,
),
child: ListTile(
dense: true,
leading: contact.roleEmoji != null
? Text(
contact.roleEmoji!,
style: const TextStyle(fontSize: 24),
)
: Icon(
Icons.person,
color: Theme.of(context).colorScheme.primary,
size: 24,
),
title: Text(contact.displayName),
subtitle: Text(
'${_bearingToCardinal(bearing)}${_formatDistance(distance)}',
style: Theme.of(context).textTheme.bodySmall,
),
trailing: Text(
'${bearing.round()}°',
style: Theme.of(context).textTheme.bodySmall?.copyWith(
fontWeight: FontWeight.bold,
),
),
onTap: () {
if (selectedContact == contact) {
// Deselect if already selected
onContactTap(null);
} else {
// Select this contact
onContactTap(contact);
}
},
),
);
}),
],
);
}
// Calculate bearing between two points (in degrees)
double _calculateBearing(
double lat1, double lon1, double lat2, double lon2) {
final dLon = (lon2 - lon1) * pi / 180;
final lat1Rad = lat1 * pi / 180;
final lat2Rad = lat2 * pi / 180;
final y = sin(dLon) * cos(lat2Rad);
final x = cos(lat1Rad) * sin(lat2Rad) -
sin(lat1Rad) * cos(lat2Rad) * cos(dLon);
final bearing = atan2(y, x) * 180 / pi;
return (bearing + 360) % 360;
}
// Calculate distance between two points (in meters)
double _calculateDistance(
double lat1, double lon1, double lat2, double lon2) {
const R = 6371000; // Earth's radius in meters
final dLat = (lat2 - lat1) * pi / 180;
final dLon = (lon2 - lon1) * pi / 180;
final a = sin(dLat / 2) * sin(dLat / 2) +
cos(lat1 * pi / 180) *
cos(lat2 * pi / 180) *
sin(dLon / 2) *
sin(dLon / 2);
final c = 2 * atan2(sqrt(a), sqrt(1 - a));
return R * c;
}
String _bearingToCardinal(double bearing) {
const directions = ['N', 'NE', 'E', 'SE', 'S', 'SW', 'W', 'NW'];
final index = ((bearing + 22.5) / 45).floor() % 8;
return directions[index];
}
String _formatDistance(double meters) {
if (meters < 1000) {
return '${meters.round()}m';
} else {
return '${(meters / 1000).toStringAsFixed(1)}km';
}
}
}

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@@ -0,0 +1,181 @@
import 'package:flutter/material.dart';
/// Filter controls for the compass dialog.
/// Allows filtering of contacts and SAR marker types.
class CompassFilters extends StatefulWidget {
final bool showContacts;
final bool showFoundPerson;
final bool showFire;
final bool showStagingArea;
final ValueChanged<bool> onShowContactsChanged;
final ValueChanged<bool> onShowFoundPersonChanged;
final ValueChanged<bool> onShowFireChanged;
final ValueChanged<bool> onShowStagingAreaChanged;
final VoidCallback onShowAll;
const CompassFilters({
super.key,
required this.showContacts,
required this.showFoundPerson,
required this.showFire,
required this.showStagingArea,
required this.onShowContactsChanged,
required this.onShowFoundPersonChanged,
required this.onShowFireChanged,
required this.onShowStagingAreaChanged,
required this.onShowAll,
});
@override
State<CompassFilters> createState() => _CompassFiltersState();
}
class _CompassFiltersState extends State<CompassFilters> {
void _showFilterDialog() {
showDialog(
context: context,
builder: (context) => StatefulBuilder(
builder: (context, setDialogState) => AlertDialog(
title: const Row(
children: [
Icon(Icons.filter_list, size: 20),
SizedBox(width: 8),
Text('Filter Markers'),
],
),
contentPadding: const EdgeInsets.fromLTRB(24, 16, 24, 0),
content: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
// Contacts filter
_CompactFilterItem(
icon: Icons.person,
color: Theme.of(context).colorScheme.primary,
label: 'Contacts',
value: widget.showContacts,
onChanged: (value) {
widget.onShowContactsChanged(value);
setDialogState(() {});
},
),
const SizedBox(height: 4),
const Divider(height: 8),
const SizedBox(height: 4),
// SAR Markers section
Padding(
padding: const EdgeInsets.only(left: 8, bottom: 8, top: 4),
child: Text(
'SAR Markers',
style: Theme.of(context).textTheme.labelLarge?.copyWith(
fontWeight: FontWeight.bold,
),
),
),
_CompactFilterItem(
icon: Icons.person_pin,
color: Colors.green,
label: 'Found Person',
value: widget.showFoundPerson,
onChanged: (value) {
widget.onShowFoundPersonChanged(value);
setDialogState(() {});
},
),
const SizedBox(height: 4),
_CompactFilterItem(
icon: Icons.local_fire_department,
color: Colors.red,
label: 'Fire',
value: widget.showFire,
onChanged: (value) {
widget.onShowFireChanged(value);
setDialogState(() {});
},
),
const SizedBox(height: 4),
_CompactFilterItem(
icon: Icons.home_work,
color: Colors.orange,
label: 'Staging Area',
value: widget.showStagingArea,
onChanged: (value) {
widget.onShowStagingAreaChanged(value);
setDialogState(() {});
},
),
],
),
actions: [
TextButton(
onPressed: () {
widget.onShowAll();
setDialogState(() {});
},
child: const Text('Show All'),
),
TextButton(
onPressed: () => Navigator.pop(context),
child: const Text('Close'),
),
],
),
),
);
}
@override
Widget build(BuildContext context) {
return IconButton(
icon: const Icon(Icons.filter_list),
tooltip: 'Filter markers',
onPressed: () => _showFilterDialog(),
);
}
}
/// Compact filter item widget
class _CompactFilterItem extends StatelessWidget {
final IconData icon;
final Color color;
final String label;
final bool value;
final ValueChanged<bool> onChanged;
const _CompactFilterItem({
required this.icon,
required this.color,
required this.label,
required this.value,
required this.onChanged,
});
@override
Widget build(BuildContext context) {
return InkWell(
onTap: () => onChanged(!value),
borderRadius: BorderRadius.circular(8),
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 6),
child: Row(
children: [
Icon(icon, size: 20, color: color),
const SizedBox(width: 12),
Expanded(
child: Text(
label,
style: Theme.of(context).textTheme.bodyMedium,
),
),
Checkbox(
value: value,
onChanged: (val) => onChanged(val ?? false),
materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
visualDensity: VisualDensity.compact,
),
],
),
),
);
}
}

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@@ -0,0 +1,598 @@
import 'dart:math';
import 'dart:ui' as ui;
import 'package:flutter/material.dart';
import 'package:geolocator/geolocator.dart';
import 'package:latlong2/latlong.dart';
import '../../../models/contact.dart';
import '../../../models/sar_marker.dart';
/// Header component for the compass dialog showing compass rose,
/// heading, elevation, accuracy, and current location in multiple formats.
class CompassHeader extends StatelessWidget {
final double? heading;
final Position? position;
final bool hasHeading;
final Position? currentPosition;
final List<Contact> contacts;
final List<SarMarker> sarMarkers;
final double zoomLevel;
final double previousScale;
final ValueChanged<double> onZoomUpdate;
final VoidCallback onScaleStart;
final VoidCallback onScaleEnd;
const CompassHeader({
super.key,
required this.heading,
required this.position,
required this.hasHeading,
required this.currentPosition,
required this.contacts,
required this.sarMarkers,
required this.zoomLevel,
required this.previousScale,
required this.onZoomUpdate,
required this.onScaleStart,
required this.onScaleEnd,
});
@override
Widget build(BuildContext context) {
return Column(
mainAxisSize: MainAxisSize.min,
children: [
// Heading and Elevation info
_buildInfoRow(context, heading, position),
const SizedBox(height: 12),
// Current location in multiple formats
if (position != null) _LocationFormatToggle(position: position),
const SizedBox(height: 12),
// Large compass with zoom controls
GestureDetector(
onScaleStart: (details) {
onScaleStart();
},
onScaleUpdate: (details) {
onZoomUpdate(details.scale);
},
onScaleEnd: (details) {
onScaleEnd();
},
child: SizedBox(
width: 300,
height: 300,
child: _DetailedCompassPainter(
heading: heading ?? 0,
hasHeading: hasHeading,
currentPosition: currentPosition,
contacts: contacts,
sarMarkers: sarMarkers,
zoomLevel: zoomLevel,
),
),
),
],
);
}
Widget _buildInfoRow(BuildContext context, double? heading, Position? position) {
return Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
_buildInfoCard(
context,
'Heading',
heading != null ? '${heading.round()}°' : '--',
Icons.explore,
),
_buildInfoCard(
context,
'Elevation',
position?.altitude != null
? '${position!.altitude.round()}m'
: '--',
Icons.terrain,
),
_buildInfoCard(
context,
'Accuracy',
position?.accuracy != null
? '±${position!.accuracy.round()}m'
: '--',
Icons.gps_fixed,
),
],
);
}
Widget _buildInfoCard(
BuildContext context, String label, String value, IconData icon) {
return Column(
children: [
Icon(icon, size: 20, color: Theme.of(context).colorScheme.primary),
const SizedBox(height: 4),
Text(
value,
style: Theme.of(context).textTheme.titleMedium?.copyWith(
fontWeight: FontWeight.bold,
),
),
Text(
label,
style: Theme.of(context).textTheme.bodySmall,
),
],
);
}
}
/// Detailed Compass Painter with contacts
class _DetailedCompassPainter extends StatelessWidget {
final double heading;
final bool hasHeading;
final Position? currentPosition;
final List<Contact> contacts;
final List<SarMarker> sarMarkers;
final double zoomLevel;
const _DetailedCompassPainter({
required this.heading,
required this.hasHeading,
required this.currentPosition,
required this.contacts,
required this.sarMarkers,
this.zoomLevel = 1.0,
});
@override
Widget build(BuildContext context) {
return CustomPaint(
painter: _LargeCompassPainter(
heading: heading,
hasHeading: hasHeading,
currentPosition: currentPosition,
contacts: contacts,
sarMarkers: sarMarkers,
zoomLevel: zoomLevel,
),
child: Container(),
);
}
}
class _LargeCompassPainter extends CustomPainter {
final double heading;
final bool hasHeading;
final Position? currentPosition;
final List<Contact> contacts;
final List<SarMarker> sarMarkers;
final double zoomLevel;
_LargeCompassPainter({
required this.heading,
required this.hasHeading,
required this.currentPosition,
required this.contacts,
required this.sarMarkers,
this.zoomLevel = 1.0,
});
@override
void paint(Canvas canvas, Size size) {
final center = Offset(size.width / 2, size.height / 2);
final radius = size.width / 2;
// Draw outer circle
final circlePaint = Paint()
..color = Colors.grey.withValues(alpha: 0.2)
..style = PaintingStyle.stroke
..strokeWidth = 2;
canvas.drawCircle(center, radius, circlePaint);
// Draw degree markers
for (int i = 0; i < 360; i += 10) {
final angle = i * pi / 180 - pi / 2 + heading * pi / 180;
final isCardinal = i % 90 == 0;
final isMajor = i % 30 == 0;
final startRadius = isCardinal ? radius - 25 : (isMajor ? radius - 15 : radius - 10);
final start = Offset(
center.dx + startRadius * cos(angle),
center.dy + startRadius * sin(angle),
);
final end = Offset(
center.dx + radius * cos(angle),
center.dy + radius * sin(angle),
);
final markerPaint = Paint()
..color = isCardinal ? Colors.red : Colors.grey
..strokeWidth = isCardinal ? 3 : (isMajor ? 2 : 1);
canvas.drawLine(start, end, markerPaint);
}
// Draw cardinal directions
final textPainter = TextPainter(textDirection: TextDirection.ltr);
final directions = ['N', 'E', 'S', 'W'];
for (int i = 0; i < 4; i++) {
final angle = i * pi / 2 - pi / 2 + heading * pi / 180;
final x = center.dx + (radius - 35) * cos(angle);
final y = center.dy + (radius - 35) * sin(angle);
textPainter.text = TextSpan(
text: directions[i],
style: TextStyle(
color: i == 0 ? Colors.red : Colors.grey.shade700,
fontSize: 24,
fontWeight: FontWeight.bold,
),
);
textPainter.layout();
textPainter.paint(
canvas,
Offset(x - textPainter.width / 2, y - textPainter.height / 2),
);
}
// Draw contacts as dots relative to distance, scaled by zoom level
if (currentPosition != null && contacts.isNotEmpty) {
// Calculate distances for all contacts
final contactsWithDistance = contacts
.where((c) => c.displayLocation != null)
.map((contact) {
final bearing = _calculateBearing(
currentPosition!.latitude,
currentPosition!.longitude,
contact.displayLocation!.latitude,
contact.displayLocation!.longitude,
);
final distance = _calculateDistance(
currentPosition!.latitude,
currentPosition!.longitude,
contact.displayLocation!.latitude,
contact.displayLocation!.longitude,
);
return {'contact': contact, 'bearing': bearing, 'distance': distance};
}).toList();
if (contactsWithDistance.isEmpty) return;
// Base distance for zoom level 1.0 (in meters)
// At 1x zoom, contacts within 1km appear inside the compass
final baseDistance = 1000.0 / zoomLevel;
for (final item in contactsWithDistance) {
final bearing = item['bearing'] as double;
final distance = item['distance'] as double;
// Adjust bearing relative to current heading
final relativeBearing = (bearing - heading + 360) % 360;
final angle = relativeBearing * pi / 180 - pi / 2;
// Calculate normalized distance (0 to 1, where 1 is at the rim)
// Apply zoom level: higher zoom = contacts appear closer
double normalizedDistance = (distance / baseDistance).clamp(0.0, 1.0);
// Calculate contact position radius (from center to rim based on distance)
final contactRadius = radius * normalizedDistance * 0.85; // 0.85 to keep inside rim
// Position of contact dot
final dotX = center.dx + contactRadius * cos(angle);
final dotY = center.dy + contactRadius * sin(angle);
// Draw line from center to contact
final linePaint = Paint()
..color = Colors.lightBlue.withValues(alpha: 0.3)
..style = PaintingStyle.stroke
..strokeWidth = 1.5;
canvas.drawLine(
center,
Offset(dotX, dotY),
linePaint,
);
// Draw contact dot (size varies with zoom)
final dotSize = (6.0 * (1.0 + zoomLevel * 0.3)).clamp(4.0, 12.0);
final dotPaint = Paint()
..color = Colors.lightBlue
..style = PaintingStyle.fill;
canvas.drawCircle(Offset(dotX, dotY), dotSize, dotPaint);
// Draw white border
final borderPaint = Paint()
..color = Colors.white
..style = PaintingStyle.stroke
..strokeWidth = 2;
canvas.drawCircle(Offset(dotX, dotY), dotSize, borderPaint);
// Draw distance label near the contact (only if not too crowded)
if (zoomLevel >= 0.75) {
final distanceText = _formatDistance(distance);
final labelOffset = dotSize + 12;
final labelX = center.dx + (contactRadius + labelOffset) * cos(angle);
final labelY = center.dy + (contactRadius + labelOffset) * sin(angle);
textPainter.text = TextSpan(
text: distanceText,
style: const TextStyle(
color: Colors.lightBlue,
fontSize: 9,
fontWeight: FontWeight.bold,
),
);
textPainter.layout();
// Draw background for readability
final bgRect = RRect.fromRectAndRadius(
Rect.fromCenter(
center: Offset(labelX, labelY),
width: textPainter.width + 4,
height: textPainter.height + 2,
),
const Radius.circular(3),
);
final bgPaint = Paint()
..color = Colors.white.withValues(alpha: 0.9)
..style = PaintingStyle.fill;
canvas.drawRRect(bgRect, bgPaint);
textPainter.paint(
canvas,
Offset(labelX - textPainter.width / 2, labelY - textPainter.height / 2),
);
}
}
}
// Draw SAR markers as colored dots relative to distance, scaled by zoom level
if (currentPosition != null && sarMarkers.isNotEmpty) {
// Calculate distances for all SAR markers
final markersWithDistance = sarMarkers.map((marker) {
final bearing = _calculateBearing(
currentPosition!.latitude,
currentPosition!.longitude,
marker.location.latitude,
marker.location.longitude,
);
final distance = _calculateDistance(
currentPosition!.latitude,
currentPosition!.longitude,
marker.location.latitude,
marker.location.longitude,
);
return {'marker': marker, 'bearing': bearing, 'distance': distance};
}).toList();
// Base distance for zoom level 1.0 (in meters)
final baseDistance = 1000.0 / zoomLevel;
for (final item in markersWithDistance) {
final marker = item['marker'] as SarMarker;
final bearing = item['bearing'] as double;
final distance = item['distance'] as double;
// Adjust bearing relative to current heading
final relativeBearing = (bearing - heading + 360) % 360;
final angle = relativeBearing * pi / 180 - pi / 2;
// Calculate normalized distance (0 to 1, where 1 is at the rim)
double normalizedDistance = (distance / baseDistance).clamp(0.0, 1.0);
// Calculate marker position radius (from center to rim based on distance)
final markerRadius = radius * normalizedDistance * 0.85;
// Position of marker dot
final dotX = center.dx + markerRadius * cos(angle);
final dotY = center.dy + markerRadius * sin(angle);
// Determine color based on SAR marker type
Color markerColor;
switch (marker.type) {
case SarMarkerType.foundPerson:
markerColor = Colors.green;
break;
case SarMarkerType.fire:
markerColor = Colors.red;
break;
case SarMarkerType.stagingArea:
markerColor = Colors.orange;
break;
case SarMarkerType.object:
markerColor = Colors.purple;
break;
case SarMarkerType.unknown:
markerColor = Colors.grey;
break;
}
// Draw line from center to SAR marker
final linePaint = Paint()
..color = markerColor.withValues(alpha: 0.3)
..style = PaintingStyle.stroke
..strokeWidth = 2;
canvas.drawLine(
center,
Offset(dotX, dotY),
linePaint,
);
// Draw SAR marker dot (slightly larger than contacts)
final dotSize = (8.0 * (1.0 + zoomLevel * 0.3)).clamp(6.0, 14.0);
final dotPaint = Paint()
..color = markerColor
..style = PaintingStyle.fill;
canvas.drawCircle(Offset(dotX, dotY), dotSize, dotPaint);
// Draw white border
final borderPaint = Paint()
..color = Colors.white
..style = PaintingStyle.stroke
..strokeWidth = 2.5;
canvas.drawCircle(Offset(dotX, dotY), dotSize, borderPaint);
// Draw distance label near the SAR marker
if (zoomLevel >= 0.75) {
final distanceText = _formatDistance(distance);
final labelOffset = dotSize + 14;
final labelX = center.dx + (markerRadius + labelOffset) * cos(angle);
final labelY = center.dy + (markerRadius + labelOffset) * sin(angle);
textPainter.text = TextSpan(
text: distanceText,
style: TextStyle(
color: markerColor,
fontSize: 10,
fontWeight: FontWeight.bold,
),
);
textPainter.layout();
// Draw background for readability
final bgRect = RRect.fromRectAndRadius(
Rect.fromCenter(
center: Offset(labelX, labelY),
width: textPainter.width + 4,
height: textPainter.height + 2,
),
const Radius.circular(3),
);
final bgPaint = Paint()
..color = Colors.white.withValues(alpha: 0.9)
..style = PaintingStyle.fill;
canvas.drawRRect(bgRect, bgPaint);
textPainter.paint(
canvas,
Offset(labelX - textPainter.width / 2, labelY - textPainter.height / 2),
);
}
}
}
// Draw center heading indicator (fixed pointing up)
final indicatorPaint = Paint()
..color = hasHeading ? Colors.red : Colors.grey
..style = PaintingStyle.fill;
final path = ui.Path()
..moveTo(center.dx, center.dy - 40)
..lineTo(center.dx - 10, center.dy + 10)
..lineTo(center.dx + 10, center.dy + 10)
..close();
canvas.drawPath(path, indicatorPaint);
}
double _calculateBearing(
double lat1, double lon1, double lat2, double lon2) {
final dLon = (lon2 - lon1) * pi / 180;
final lat1Rad = lat1 * pi / 180;
final lat2Rad = lat2 * pi / 180;
final y = sin(dLon) * cos(lat2Rad);
final x = cos(lat1Rad) * sin(lat2Rad) -
sin(lat1Rad) * cos(lat2Rad) * cos(dLon);
final bearing = atan2(y, x) * 180 / pi;
return (bearing + 360) % 360;
}
double _calculateDistance(
double lat1, double lon1, double lat2, double lon2) {
const R = 6371000; // Earth's radius in meters
final dLat = (lat2 - lat1) * pi / 180;
final dLon = (lon2 - lon1) * pi / 180;
final a = sin(dLat / 2) * sin(dLat / 2) +
cos(lat1 * pi / 180) *
cos(lat2 * pi / 180) *
sin(dLon / 2) *
sin(dLon / 2);
final c = 2 * atan2(sqrt(a), sqrt(1 - a));
return R * c;
}
String _formatDistance(double meters) {
if (meters < 1000) {
return '${meters.round()}m';
} else {
return '${(meters / 1000).toStringAsFixed(1)}km';
}
}
@override
bool shouldRepaint(covariant CustomPainter oldDelegate) => true;
}
/// Location format toggle widget
class _LocationFormatToggle extends StatefulWidget {
final Position? position;
const _LocationFormatToggle({required this.position});
@override
State<_LocationFormatToggle> createState() => _LocationFormatToggleState();
}
class _LocationFormatToggleState extends State<_LocationFormatToggle> {
bool _showDMS = false;
String _formatDMS(double degrees, bool isLatitude) {
final direction = isLatitude
? (degrees >= 0 ? 'N' : 'S')
: (degrees >= 0 ? 'E' : 'W');
final absolute = degrees.abs();
final deg = absolute.floor();
final minDecimal = (absolute - deg) * 60;
final min = minDecimal.floor();
final sec = (minDecimal - min) * 60;
return '$deg°${min.toString().padLeft(2, '0')}\'${sec.toStringAsFixed(2).padLeft(5, '0')}"$direction';
}
@override
Widget build(BuildContext context) {
final position = widget.position;
if (position == null) {
return const SizedBox.shrink();
}
final String displayText;
if (_showDMS) {
displayText = '${_formatDMS(position.latitude, true)} ${_formatDMS(position.longitude, false)}';
} else {
displayText = 'Lat: ${position.latitude.toStringAsFixed(5)} Lon: ${position.longitude.toStringAsFixed(5)}';
}
return GestureDetector(
onTap: () {
setState(() {
_showDMS = !_showDMS;
});
},
behavior: HitTestBehavior.opaque,
child: Container(
padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
decoration: BoxDecoration(
color: Theme.of(context).colorScheme.surfaceContainerHighest,
borderRadius: BorderRadius.circular(8),
),
child: Center(
child: Text(
displayText,
textAlign: TextAlign.center,
style: Theme.of(context).textTheme.bodySmall?.copyWith(
fontWeight: FontWeight.w500,
fontFamily: 'monospace',
fontSize: 11,
),
),
),
),
);
}
}

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import 'dart:math';
import 'package:flutter/material.dart';
import 'package:geolocator/geolocator.dart';
import '../../../models/sar_marker.dart';
/// SAR marker list section for the compass dialog.
/// Shows all filtered SAR markers sorted by distance with bearing information.
class CompassSarList extends StatelessWidget {
final List<SarMarker> sarMarkers;
final Position? position;
final SarMarker? selectedSarMarker;
final ValueChanged<SarMarker?> onSarMarkerTap;
const CompassSarList({
super.key,
required this.sarMarkers,
required this.position,
required this.selectedSarMarker,
required this.onSarMarkerTap,
});
@override
Widget build(BuildContext context) {
if (sarMarkers.isEmpty) {
return const SizedBox.shrink();
}
if (position == null) {
return const Text('Location unavailable');
}
// Calculate bearings and distances for SAR markers
final markersWithBearing = sarMarkers.map((marker) {
final bearing = _calculateBearing(
position!.latitude,
position!.longitude,
marker.location.latitude,
marker.location.longitude,
);
final distance = _calculateDistance(
position!.latitude,
position!.longitude,
marker.location.latitude,
marker.location.longitude,
);
return {
'marker': marker,
'bearing': bearing,
'distance': distance,
};
}).toList();
// Sort by distance
markersWithBearing.sort((a, b) =>
(a['distance'] as double).compareTo(b['distance'] as double));
return Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Padding(
padding: const EdgeInsets.only(left: 16, top: 16, bottom: 8),
child: Text(
'SAR Markers',
style: Theme.of(context).textTheme.titleMedium?.copyWith(
fontWeight: FontWeight.bold,
),
),
),
...markersWithBearing.map((item) {
final marker = item['marker'] as SarMarker;
final bearing = item['bearing'] as double;
final distance = item['distance'] as double;
// Determine color and icon based on marker type
Color markerColor;
IconData markerIcon;
switch (marker.type) {
case SarMarkerType.foundPerson:
markerColor = Colors.green;
markerIcon = Icons.person_pin;
break;
case SarMarkerType.fire:
markerColor = Colors.red;
markerIcon = Icons.local_fire_department;
break;
case SarMarkerType.stagingArea:
markerColor = Colors.orange;
markerIcon = Icons.home_work;
break;
case SarMarkerType.object:
markerColor = Colors.purple;
markerIcon = Icons.inventory_2;
break;
case SarMarkerType.unknown:
markerColor = Colors.grey;
markerIcon = Icons.help_outline;
break;
}
return Container(
margin: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
decoration: BoxDecoration(
color: selectedSarMarker == marker
? Theme.of(context).colorScheme.primaryContainer
: Theme.of(context).colorScheme.surfaceContainerHighest,
borderRadius: BorderRadius.circular(8),
border: selectedSarMarker == marker
? Border.all(
color: Theme.of(context).colorScheme.primary,
width: 2,
)
: null,
),
child: ListTile(
dense: true,
leading: Icon(
markerIcon,
color: markerColor,
size: 24,
),
title: Text(marker.type.displayName),
subtitle: Text(
'${_bearingToCardinal(bearing)}${_formatDistance(distance)}${marker.timeAgo}',
style: Theme.of(context).textTheme.bodySmall,
),
trailing: Text(
'${bearing.round()}°',
style: Theme.of(context).textTheme.bodySmall?.copyWith(
fontWeight: FontWeight.bold,
),
),
onTap: () {
if (selectedSarMarker == marker) {
// Deselect if already selected
onSarMarkerTap(null);
} else {
// Select this marker
onSarMarkerTap(marker);
}
},
),
);
}),
],
);
}
// Calculate bearing between two points (in degrees)
double _calculateBearing(
double lat1, double lon1, double lat2, double lon2) {
final dLon = (lon2 - lon1) * pi / 180;
final lat1Rad = lat1 * pi / 180;
final lat2Rad = lat2 * pi / 180;
final y = sin(dLon) * cos(lat2Rad);
final x = cos(lat1Rad) * sin(lat2Rad) -
sin(lat1Rad) * cos(lat2Rad) * cos(dLon);
final bearing = atan2(y, x) * 180 / pi;
return (bearing + 360) % 360;
}
// Calculate distance between two points (in meters)
double _calculateDistance(
double lat1, double lon1, double lat2, double lon2) {
const R = 6371000; // Earth's radius in meters
final dLat = (lat2 - lat1) * pi / 180;
final dLon = (lon2 - lon1) * pi / 180;
final a = sin(dLat / 2) * sin(dLat / 2) +
cos(lat1 * pi / 180) *
cos(lat2 * pi / 180) *
sin(dLon / 2) *
sin(dLon / 2);
final c = 2 * atan2(sqrt(a), sqrt(1 - a));
return R * c;
}
String _bearingToCardinal(double bearing) {
const directions = ['N', 'NE', 'E', 'SE', 'S', 'SW', 'W', 'NW'];
final index = ((bearing + 22.5) / 45).floor() % 8;
return directions[index];
}
String _formatDistance(double meters) {
if (meters < 1000) {
return '${meters.round()}m';
} else {
return '${(meters / 1000).toStringAsFixed(1)}km';
}
}
}

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