152 lines
4.5 KiB
Dart
152 lines
4.5 KiB
Dart
import 'package:flutter/material.dart';
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import '../theme/app_theme.dart';
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/// Android-style persistent status bar for system indicators.
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/// Shows GPS satellites, LTE signal, Pi temp, voltage at a glance.
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class SystemBar extends StatelessWidget {
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final int? gpsSatellites; // null = disconnected
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final int? lteSignal; // null = disconnected, 0-4 bars
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final double? piTemp; // null = unavailable
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final double? voltage; // null = Arduino disconnected
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const SystemBar({
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super.key,
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this.gpsSatellites,
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this.lteSignal,
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this.piTemp,
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this.voltage,
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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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return Expanded(
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flex: 1,
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child: LayoutBuilder(
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builder: (context, constraints) {
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// Font sizes relative to bar height
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final labelSize = constraints.maxHeight * 0.5;
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final valueSize = constraints.maxHeight * 0.5;
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return Container(
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padding: const EdgeInsets.symmetric(horizontal: 24),
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decoration: BoxDecoration(
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border: Border(
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bottom: BorderSide(
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color: theme.subdued.withValues(alpha: 0.3),
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width: 1,
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),
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),
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),
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child: Row(
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crossAxisAlignment: CrossAxisAlignment.center,
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children: [
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// Left group: GPS, LTE
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_Indicator(
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label: 'GPS',
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value: gpsSatellites?.toString() ?? 'N/A',
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isAbnormal: gpsSatellites == null || gpsSatellites == 0,
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alignment: Alignment.centerLeft,
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labelSize: labelSize,
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valueSize: valueSize,
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flex: 2,
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theme: theme,
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),
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_Indicator(
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label: 'LTE',
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value: lteSignal?.toString() ?? 'N/A',
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isAbnormal: lteSignal == null,
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alignment: Alignment.centerLeft,
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labelSize: labelSize,
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valueSize: valueSize,
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flex: 2,
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theme: theme,
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),
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// Right group: Pi, Chassis
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_Indicator(
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label: 'Pi',
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value: piTemp != null ? '${piTemp!.toStringAsFixed(1)} °C' : 'N/A',
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isAbnormal: piTemp == null || piTemp! > 80,
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alignment: Alignment.centerRight,
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labelSize: labelSize,
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valueSize: valueSize,
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flex: 2,
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theme: theme,
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),
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_Indicator(
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label: 'Chassis',
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value: voltage != null ? '${voltage!.toStringAsFixed(1)} V' : 'N/A',
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isAbnormal: voltage == null || voltage! < 11.9,
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alignment: Alignment.centerRight,
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labelSize: labelSize,
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valueSize: valueSize,
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flex: 3,
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theme: theme,
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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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}
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/// Single status indicator in a fixed-width flex slot.
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class _Indicator extends StatelessWidget {
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final String label;
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final String value;
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final bool isAbnormal;
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final Alignment alignment;
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final double labelSize;
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final double valueSize;
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final int flex;
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final AppTheme theme;
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const _Indicator({
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required this.label,
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required this.value,
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required this.isAbnormal,
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required this.alignment,
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required this.labelSize,
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required this.valueSize,
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required this.flex,
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required this.theme,
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});
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@override
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Widget build(BuildContext context) {
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return Expanded(
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flex: flex,
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child: Align(
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alignment: alignment,
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child: Row(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.baseline,
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textBaseline: TextBaseline.alphabetic,
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children: [
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Text(
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'$label ',
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style: TextStyle(
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fontSize: labelSize,
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color: theme.subdued,
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),
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),
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Text(
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value,
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style: TextStyle(
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fontSize: valueSize,
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fontFeatures: const [FontFeature.tabularFigures()],
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color: isAbnormal ? theme.highlight : theme.foreground,
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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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