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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,154 @@ | ||
| import 'package:elastic_dashboard/services/globals.dart'; | ||
| import 'package:elastic_dashboard/services/nt4_connection.dart'; | ||
| import 'package:elastic_dashboard/widgets/dialog_widgets/dialog_text_input.dart'; | ||
| import 'package:elastic_dashboard/widgets/nt4_widgets/nt4_widget.dart'; | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:flutter/services.dart'; | ||
| import 'package:provider/provider.dart'; | ||
| import 'package:syncfusion_flutter_gauges/gauges.dart'; | ||
|
|
||
| class NumberBar extends StatelessWidget with NT4Widget { | ||
| @override | ||
| String type = 'Number Bar'; | ||
|
|
||
| double minValue; | ||
| double maxValue; | ||
| int? divisions; | ||
|
|
||
| NumberBar( | ||
| {super.key, | ||
| required topic, | ||
| this.minValue = -1.0, | ||
| this.maxValue = 1.0, | ||
| this.divisions = 5, | ||
| period = Globals.defaultPeriod}) { | ||
| super.topic = topic; | ||
| super.period = period; | ||
|
|
||
| init(); | ||
| } | ||
|
|
||
| NumberBar.fromJson({super.key, required Map<String, dynamic> jsonData}) | ||
| : minValue = jsonData['min_value'] ?? -1.0, | ||
| maxValue = jsonData['max_value'] ?? 1.0, | ||
| divisions = jsonData['divisions'] { | ||
| topic = jsonData['topic'] ?? ''; | ||
| period = jsonData['period'] ?? Globals.defaultPeriod; | ||
|
|
||
| init(); | ||
| } | ||
|
|
||
| @override | ||
| Map<String, dynamic> toJson() { | ||
| return { | ||
| 'topic': topic, | ||
| 'period': period, | ||
| 'min_value': minValue, | ||
| 'max_value': maxValue, | ||
| 'divisions': divisions, | ||
| }; | ||
| } | ||
|
|
||
| @override | ||
| List<Widget> getEditProperties(BuildContext context) { | ||
| return [ | ||
| // Min and max values | ||
| Row( | ||
| mainAxisAlignment: MainAxisAlignment.spaceAround, | ||
| mainAxisSize: MainAxisSize.max, | ||
| children: [ | ||
| Flexible( | ||
| child: DialogTextInput( | ||
| onSubmit: (value) { | ||
| double? newMin = double.tryParse(value); | ||
| if (newMin == null) { | ||
| return; | ||
| } | ||
| minValue = newMin; | ||
| refresh(); | ||
| }, | ||
| formatter: FilteringTextInputFormatter.allow(RegExp(r"[0-9.-]")), | ||
| label: 'Min Value', | ||
| initialText: minValue.toString(), | ||
| ), | ||
| ), | ||
| const SizedBox(width: 5), | ||
| Flexible( | ||
| child: DialogTextInput( | ||
| onSubmit: (value) { | ||
| double? newMax = double.tryParse(value); | ||
| if (newMax == null) { | ||
| return; | ||
| } | ||
| maxValue = newMax; | ||
| refresh(); | ||
| }, | ||
| formatter: FilteringTextInputFormatter.allow(RegExp(r"[0-9.-]")), | ||
| label: 'Max Value', | ||
| initialText: maxValue.toString(), | ||
| ), | ||
| ), | ||
| ], | ||
| ), | ||
| const SizedBox(height: 5), | ||
| // Number of divisions | ||
| DialogTextInput( | ||
| onSubmit: (value) { | ||
| int? newDivisions = int.tryParse(value); | ||
| if (newDivisions != null && newDivisions < 2) { | ||
| return; | ||
| } | ||
| divisions = newDivisions; | ||
| refresh(); | ||
| }, | ||
| formatter: FilteringTextInputFormatter.digitsOnly, | ||
| label: 'Divisions', | ||
| initialText: (divisions != null) ? divisions.toString() : '', | ||
| allowEmptySubmission: true, | ||
| ), | ||
| ]; | ||
| } | ||
|
|
||
| @override | ||
| Widget build(BuildContext context) { | ||
| notifier = context.watch<NT4WidgetNotifier?>(); | ||
|
|
||
| return StreamBuilder( | ||
| stream: subscription?.periodicStream(), | ||
| initialData: nt4Connection.getLastAnnouncedValue(topic), | ||
| builder: (context, snapshot) { | ||
| double value = snapshot.data as double? ?? 0.0; | ||
|
|
||
| double clampedValue = value.clamp(minValue, maxValue); | ||
|
|
||
| double? divisionInterval = (divisions != null) | ||
| ? (maxValue - minValue) / (divisions! - 1) | ||
| : null; | ||
|
|
||
| return Column( | ||
| children: [ | ||
| Text( | ||
| value.toStringAsFixed(4), | ||
| style: Theme.of(context).textTheme.bodyLarge, | ||
| overflow: TextOverflow.ellipsis, | ||
| ), | ||
| const SizedBox(height: 5), | ||
| SfLinearGauge( | ||
| key: UniqueKey(), | ||
| maximum: maxValue, | ||
| minimum: minValue, | ||
| barPointers: [ | ||
| LinearBarPointer( | ||
| value: clampedValue, | ||
| animationDuration: 0, | ||
| ), | ||
| ], | ||
| minorTicksPerInterval: 0, | ||
| interval: divisionInterval, | ||
| ), | ||
| ], | ||
| ); | ||
| }, | ||
| ); | ||
| } | ||
| } |