mikkeli
8d95514897
From smart-serow: the DIN 1451 face (Alte DIN 1451 Mittelschrift, via gps-speedo) and GpsCompass. A cosmetic font is opt-in: widgets name hudFont in their own TextStyle, the rest keeps the basic font (CJK). Boxes and telltales shrink long labels instead of wrapping. Telltale and Reading get their own files; lib/README.md catalogues folders and widgets like smart-serow's. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01DDwfd6Ki8UfG4hK6W5YpJz
95 lines
2.4 KiB
Dart
95 lines
2.4 KiB
Dart
// Ported from smart-serow (pi/ui/lib/widgets/gps_compass.dart), itself from android-stuff/gps-speedo:
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// a heading arrow and its bearing. Changes: the palette import and lint fixes.
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import 'dart:math' as math;
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import 'package:flutter/material.dart';
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import '../theme/palette.dart';
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class GpsCompass extends StatelessWidget {
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final double? heading;
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final String? gpsState; // "acquiring", "fix", "lost"
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const GpsCompass({super.key, this.heading, this.gpsState});
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bool get _hasSignal => heading != null;
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bool get _isAcquiring => gpsState == 'acquiring';
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String get _displayHeading {
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if (!_hasSignal) return 'N/A';
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return '${(heading! % 360).round()}';
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}
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String get _compassDirection {
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if (!_hasSignal) return '';
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final directions = [
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'N',
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'NNE',
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'NE',
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'ENE',
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'E',
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'ESE',
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'SE',
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'SSE',
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'S',
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'SSW',
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'SW',
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'WSW',
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'W',
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'WNW',
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'NW',
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'NNW',
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];
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final index = ((heading! % 360) / 22.5).round() % 16;
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return directions[index];
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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 iconColour = _hasSignal ? theme.foreground : theme.highlight;
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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: 120,
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color: iconColour,
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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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_hasSignal
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? "$_displayHeading $_compassDirection"
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: (_isAcquiring ? "ACQ" : "N/A"),
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style: TextStyle(
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fontSize: 80,
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color: theme.subdued, // less emphasis on text, let the icon have semantic colour
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fontFamily: hudFont,
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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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