feat: MeshCore SAR - Flutter BLE mesh radio companion app

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-08-12 00:40:28 +00:00 · 2026-02-28 10:11:33 +01:00
commit baf49d27d8
313 changed files with 101770 additions and 0 deletions
--- a/lib/widgets/map/compass_widget.dart
+++ b/lib/widgets/map/compass_widget.dart
@@ -0,0 +1,107 @@
+import 'dart:math';
+import 'package:flutter/material.dart';
+
+class CompassWidget extends StatelessWidget {
+  final double heading;
+  final bool hasHeading;
+
+  const CompassWidget({
+    super.key,
+    required this.heading,
+    required this.hasHeading,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return Card(
+      child: Container(
+        width: 56,
+        height: 56,
+        padding: const EdgeInsets.all(8),
+        child: Stack(
+          alignment: Alignment.center,
+          children: [
+            // Compass rose background - rotates to show true north at top
+            Transform.rotate(
+              angle: heading * pi / 180,
+              child: CustomPaint(
+                size: const Size(40, 40),
+                painter: _CompassRosePainter(),
+              ),
+            ),
+            // Fixed needle pointing up (since map rotates)
+            Icon(
+              Icons.navigation,
+              color: hasHeading ? Colors.red : Colors.grey,
+              size: 28,
+            ),
+            // Heading text
+            Positioned(
+              bottom: 0,
+              child: Container(
+                padding: const EdgeInsets.symmetric(horizontal: 4, vertical: 1),
+                decoration: BoxDecoration(
+                  color: Colors.black.withValues(alpha: 0.7),
+                  borderRadius: BorderRadius.circular(4),
+                ),
+                child: Text(
+                  hasHeading ? '${heading.round()}°' : '--',
+                  style: const TextStyle(
+                    color: Colors.white,
+                    fontSize: 9,
+                    fontWeight: FontWeight.bold,
+                  ),
+                ),
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+class _CompassRosePainter extends CustomPainter {
+  @override
+  void paint(Canvas canvas, Size size) {
+    final paint = Paint()
+      ..color = Colors.grey.withValues(alpha: 0.3)
+      ..style = PaintingStyle.stroke
+      ..strokeWidth = 1;
+
+    final center = Offset(size.width / 2, size.height / 2);
+    final radius = size.width / 2;
+
+    // Draw circle
+    canvas.drawCircle(center, radius, paint);
+
+    // Draw cardinal direction markers
+    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; // Start from North (top)
+      final x = center.dx + radius * 0.7 * cos(angle);
+      final y = center.dy + radius * 0.7 * sin(angle);
+
+      textPainter.text = TextSpan(
+        text: directions[i],
+        style: TextStyle(
+          color: Colors.grey.shade700,
+          fontSize: 10,
+          fontWeight: FontWeight.bold,
+        ),
+      );
+      textPainter.layout();
+      textPainter.paint(
+        canvas,
+        Offset(x - textPainter.width / 2, y - textPainter.height / 2),
+      );
+    }
+  }
+
+  @override
+  bool shouldRepaint(covariant CustomPainter oldDelegate) => false;
+}