selfprivacy.org.app/lib/ui/pages/server_details/charts/chart.dart

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part of '../server_details_screen.dart';
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class _Chart extends StatelessWidget {
@override
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Widget build(final BuildContext context) {
final MetricsCubit cubit = context.watch<MetricsCubit>();
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final Period period = cubit.state.period;
final MetricsState state = cubit.state;
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List<Widget> charts;
if (state is MetricsLoaded || state is MetricsLoading) {
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charts = [
FilledCard(
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clipped: false,
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'resource_chart.cpu_title'.tr(),
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style: Theme.of(context).textTheme.titleMedium?.copyWith(
color: Theme.of(context).colorScheme.onSurfaceVariant,
),
),
const SizedBox(height: 16),
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Stack(
alignment: Alignment.center,
children: [
if (state is MetricsLoaded) getCpuChart(state),
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AnimatedOpacity(
duration: const Duration(milliseconds: 200),
opacity: state is MetricsLoading ? 1 : 0,
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child: const _GraphLoadingCardContent(),
),
],
),
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],
),
),
),
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const SizedBox(height: 8),
FilledCard(
clipped: false,
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Row(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisSize: MainAxisSize.max,
mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
Flexible(
child: Text(
'resource_chart.network_title'.tr(),
style:
Theme.of(context).textTheme.titleMedium?.copyWith(
color: Theme.of(context)
.colorScheme
.onSurfaceVariant,
),
),
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),
Flexible(
fit: FlexFit.loose,
child: Wrap(
spacing: 8.0,
runSpacing: 8.0,
alignment: WrapAlignment.end,
runAlignment: WrapAlignment.end,
children: [
Legend(
color: Theme.of(context).colorScheme.primary,
text: 'resource_chart.in'.tr(),
),
Legend(
color: Theme.of(context).colorScheme.tertiary,
text: 'resource_chart.out'.tr(),
),
],
),
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),
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],
),
const SizedBox(height: 20),
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Stack(
alignment: Alignment.center,
children: [
if (state is MetricsLoaded) getBandwidthChart(state),
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AnimatedOpacity(
duration: const Duration(milliseconds: 200),
opacity: state is MetricsLoading ? 1 : 0,
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child: const _GraphLoadingCardContent(),
),
],
),
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],
),
),
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),
];
} else {
throw 'wrong state';
}
return Column(
children: [
SegmentedButtons(
isSelected: [
period == Period.month,
period == Period.day,
period == Period.hour,
],
onPressed: (final index) {
switch (index) {
case 0:
cubit.changePeriod(Period.month);
break;
case 1:
cubit.changePeriod(Period.day);
break;
case 2:
cubit.changePeriod(Period.hour);
break;
}
},
titles: [
'resource_chart.month'.tr(),
'resource_chart.day'.tr(),
'resource_chart.hour'.tr(),
],
),
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const SizedBox(height: 8),
...charts,
],
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);
}
Widget getCpuChart(final MetricsLoaded state) {
final data = state.metrics.cpu;
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return SizedBox(
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height: 200,
child: CpuChart(
data: data,
period: state.period,
start: state.metrics.start,
),
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);
}
Widget getBandwidthChart(final MetricsLoaded state) {
final ppsIn = state.metrics.bandwidthIn;
final ppsOut = state.metrics.bandwidthOut;
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return SizedBox(
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height: 200,
child: NetworkChart(
listData: [ppsIn, ppsOut],
period: state.period,
start: state.metrics.start,
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),
);
}
}
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class _GraphLoadingCardContent extends StatelessWidget {
const _GraphLoadingCardContent();
@override
Widget build(final BuildContext context) => const SizedBox(
height: 200,
child: Center(child: CircularProgressIndicator.adaptive()),
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);
}
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class Legend extends StatelessWidget {
const Legend({
required this.color,
required this.text,
super.key,
});
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final String text;
final Color color;
@override
Widget build(final BuildContext context) => Row(
mainAxisAlignment: MainAxisAlignment.end,
mainAxisSize: MainAxisSize.min,
children: [
_ColoredBox(color: color),
const SizedBox(width: 5),
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Text(
text,
style: Theme.of(context).textTheme.labelSmall,
),
],
);
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}
class _ColoredBox extends StatelessWidget {
const _ColoredBox({
required this.color,
});
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final Color color;
@override
Widget build(final BuildContext context) => Container(
width: 10,
height: 10,
decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(5),
color: color.withOpacity(0.4),
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border: Border.all(
color: color,
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width: 1.5,
),
),
);
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}