Track rögzítés vizuális visszajelzésének módosítása.

lib/widgets/appbar/gnss_receiver_outline_icon.dart

@@ -0,0 +1,155 @@
+import 'package:flutter/material.dart';
+
+class GnssReceiverOutlineIcon extends StatelessWidget {
+  final double size;
+  final Color? color;
+  final double strokeWidth;
+
+  const GnssReceiverOutlineIcon({
+    super.key,
+    this.size = 26,
+    this.color,
+    this.strokeWidth = 2.1,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final iconColor = color ??
+        IconTheme.of(context).color ??
+        Theme.of(context).colorScheme.onSurfaceVariant;
+
+    return SizedBox.square(
+      dimension: size,
+      child: CustomPaint(
+        painter: _GnssReceiverOutlineIconPainter(
+          color: iconColor,
+          strokeWidth: strokeWidth,
+        ),
+      ),
+    );
+  }
+}
+
+class _GnssReceiverOutlineIconPainter extends CustomPainter {
+  final Color color;
+  final double strokeWidth;
+
+  const _GnssReceiverOutlineIconPainter({
+    required this.color,
+    required this.strokeWidth,
+  });
+
+  @override
+  void paint(Canvas canvas, Size size) {
+    canvas.save();
+
+    // 100 x 100 koordinátarendszerre rajzolunk,
+    // így jól skálázódik 24–32 px méret között is.
+    canvas.scale(size.width / 100.0, size.height / 100.0);
+
+    final stroke = Paint()
+      ..color = color
+      ..style = PaintingStyle.stroke
+      ..strokeWidth = strokeWidth * 100.0 / size.width
+      ..strokeCap = StrokeCap.round
+      ..strokeJoin = StrokeJoin.round
+      ..isAntiAlias = true;
+
+    final thinStroke = Paint()
+      ..color = color.withOpacity(0.82)
+      ..style = PaintingStyle.stroke
+      ..strokeWidth = stroke.strokeWidth * 0.72
+      ..strokeCap = StrokeCap.round
+      ..strokeJoin = StrokeJoin.round
+      ..isAntiAlias = true;
+
+    // ── felső GNSS fej / antenna ────────────────────────
+    //
+    // Kicsit hasonlít a feltöltött vevő formájára,
+    // de nem kitöltött, hanem outline.
+    final head = Path()
+      ..moveTo(17, 34)
+      ..cubicTo(17, 18, 31, 10, 50, 10)
+      ..cubicTo(69, 10, 83, 18, 83, 34)
+      ..cubicTo(83, 43, 76, 48, 68, 49)
+      ..lineTo(32, 49)
+      ..cubicTo(24, 48, 17, 43, 17, 34)
+      ..close();
+
+    canvas.drawPath(head, stroke);
+
+    // ── alsó vevőtest ───────────────────────────────────
+    final body = RRect.fromRectAndRadius(
+      const Rect.fromLTRB(26, 47, 74, 76),
+      const Radius.circular(8),
+    );
+
+    canvas.drawRRect(body, stroke);
+
+    // ── kijelző ──────────────────────────────────────────
+    final display = RRect.fromRectAndRadius(
+      const Rect.fromLTRB(40, 56, 60, 66),
+      const Radius.circular(2),
+    );
+
+    canvas.drawRRect(display, thinStroke);
+
+    // ── felső kis jelzőcsík ──────────────────────────────
+    canvas.drawLine(
+      const Offset(43, 34),
+      const Offset(57, 34),
+      thinStroke,
+    );
+
+    // ── oldalsó gombok / státusz LED-ek ─────────────────
+    canvas.drawLine(
+      const Offset(33, 57),
+      const Offset(33, 57),
+      stroke,
+    );
+    canvas.drawLine(
+      const Offset(33, 64),
+      const Offset(33, 64),
+      stroke,
+    );
+    canvas.drawLine(
+      const Offset(67, 57),
+      const Offset(67, 57),
+      stroke,
+    );
+    canvas.drawLine(
+      const Offset(67, 64),
+      const Offset(67, 64),
+      stroke,
+    );
+
+    // ── nyak / csatlakozó ────────────────────────────────
+    canvas.drawLine(
+      const Offset(50, 76),
+      const Offset(50, 89),
+      stroke,
+    );
+
+    // ── alsó bot / csatlakozó rövid vonallal ─────────────
+    final pole = RRect.fromRectAndRadius(
+      const Rect.fromLTRB(44, 86, 56, 96),
+      const Radius.circular(2),
+    );
+
+    canvas.drawRRect(pole, stroke);
+
+    // kis gyűrű a nyakon
+    canvas.drawLine(
+      const Offset(44, 84),
+      const Offset(56, 84),
+      thinStroke,
+    );
+
+    canvas.restore();
+  }
+
+  @override
+  bool shouldRepaint(covariant _GnssReceiverOutlineIconPainter oldDelegate) {
+    return oldDelegate.color != color || oldDelegate.strokeWidth != strokeWidth;
+  }
+}