62 lines
1.6 KiB
Dart
62 lines
1.6 KiB
Dart
import 'dart:math' as math;
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import 'package:flutter/material.dart';
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import '../theme/app_theme.dart';
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class GpsCompass extends StatelessWidget {
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final double? heading;
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const GpsCompass({super.key, this.heading});
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bool get _hasSignal => heading != null && !heading!.isNaN && heading! >= 0 && heading! < 360;
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String get _displayHeading {
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if (!_hasSignal) return '—-'; // Intentional double dash
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return '${heading!.round()}°';
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}
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@override
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Widget build(BuildContext context) {
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final theme = AppTheme.of(context);
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// No signal = subdued color, valid = foreground
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final color = _hasSignal ? theme.foreground : theme.subdued;
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// Convert to radians, 0 = no rotation when no signal
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final angle = _hasSignal ? (heading! * math.pi / 180.0) : 0.0;
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return Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Flexible(
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flex: 3,
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child: Transform.rotate(
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angle: _hasSignal ? angle : 0,
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child: FittedBox(
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fit: BoxFit.contain,
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child: Icon(
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_hasSignal ? Icons.navigation : Icons.navigation_outlined,
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size: 80,
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color: color,
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),
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),
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),
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),
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Flexible(
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flex: 1,
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child: FittedBox(
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fit: BoxFit.contain,
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child: Text(
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_displayHeading,
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style: TextStyle(
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fontSize: 60,
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color: color,
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fontFamily: 'DIN1451',
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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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}
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