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

220 lines
7.2 KiB
Dart

import 'package:easy_localization/easy_localization.dart';
import 'package:fl_chart/fl_chart.dart';
import 'package:flutter/material.dart';
import 'package:selfprivacy/logic/common_enum/common_enum.dart';
import 'package:selfprivacy/logic/models/metrics.dart';
import 'package:selfprivacy/ui/pages/server_details/charts/bottom_title.dart';
import 'package:selfprivacy/ui/pages/server_details/server_details_screen.dart';
class DiskChart extends StatelessWidget {
const DiskChart({
required this.diskData,
required this.period,
required this.start,
super.key,
});
final List<DiskGraphData> diskData;
final Period period;
final DateTime start;
List<FlSpot> getSpots(final List<TimeSeriesData> data) {
var i = 0;
final List<FlSpot> res = [];
for (final d in data) {
res.add(FlSpot(i.toDouble(), d.value));
i++;
}
return res;
}
String screenReaderDescription(final BuildContext context) {
final buffer = StringBuffer();
buffer.write(
'resource_chart.disk_chart_screen_reader_explanation.beginning'.tr(
namedArgs: {
'period': 'resource_chart.${period.name}'.tr(),
},
),
);
for (final disk in diskData) {
final lastData = disk.diskData.last;
final lastValue = lastData.value;
final firstData = disk.diskData.first;
final firstValue = firstData.value;
buffer.write(
'resource_chart.disk_chart_screen_reader_explanation.disk'.tr(
namedArgs: {
'disk': disk.volume.displayName,
'beginningValue': firstValue.toStringAsFixed(1),
'endValue': lastValue.toStringAsFixed(1),
},
),
);
}
return buffer.toString();
}
@override
Widget build(final BuildContext context) => Semantics(
label: screenReaderDescription(context),
child: LineChart(
LineChartData(
lineTouchData: LineTouchData(
enabled: true,
touchTooltipData: LineTouchTooltipData(
getTooltipColor: (final LineBarSpot _) =>
Theme.of(context).colorScheme.surface,
tooltipPadding: const EdgeInsets.all(8),
getTooltipItems: (final List<LineBarSpot> touchedBarSpots) {
final List<LineTooltipItem> res = [];
bool timeShown = false;
for (final spot in touchedBarSpots) {
final value = spot.y;
final date = diskData.first.diskData[spot.x.toInt()].time;
res.add(
LineTooltipItem(
'${timeShown ? '' : DateFormat('HH:mm dd.MM.yyyy').format(date)} ${diskData[spot.barIndex].volume.displayName} ${value.toInt()}%',
TextStyle(
color: Theme.of(context).colorScheme.onSurface,
fontWeight: FontWeight.bold,
),
),
);
timeShown = true;
}
return res;
},
),
),
lineBarsData: diskData
.map<LineChartBarData>(
(final disk) => LineChartBarData(
spots: getSpots(disk.diskData),
isCurved: false,
barWidth: 2,
color: disk.color,
dotData: const FlDotData(
show: false,
),
belowBarData: BarAreaData(
show: true,
gradient: LinearGradient(
colors: [
disk.color.withOpacity(0.5),
disk.color.withOpacity(0.0),
],
begin: Alignment.bottomCenter,
end: Alignment.topCenter,
),
),
),
)
.toList(),
minY: 0,
maxY: 100,
minX: 0,
titlesData: FlTitlesData(
topTitles: const AxisTitles(
sideTitles: SideTitles(showTitles: false),
),
bottomTitles: AxisTitles(
sideTitles: SideTitles(
interval: 40,
reservedSize: 30,
getTitlesWidget: (final value, final titleMeta) => Padding(
padding: const EdgeInsets.all(8.0),
child: ExcludeSemantics(
child: Text(
bottomTitle(
value.toInt(),
diskData.first.diskData,
period,
),
style: Theme.of(context).textTheme.labelSmall?.copyWith(
color: Theme.of(context)
.colorScheme
.onSurfaceVariant,
),
),
),
),
showTitles: true,
),
),
leftTitles: const AxisTitles(
sideTitles: SideTitles(showTitles: false),
),
rightTitles: const AxisTitles(
sideTitles: SideTitles(
showTitles: false,
),
),
),
gridData: FlGridData(
show: true,
drawVerticalLine: true,
verticalInterval: 40,
horizontalInterval: 25,
getDrawingHorizontalLine: (final value) => FlLine(
color: Theme.of(context).colorScheme.outline.withOpacity(0.3),
strokeWidth: 1,
),
getDrawingVerticalLine: (final value) => FlLine(
color: Theme.of(context).colorScheme.outline.withOpacity(0.3),
strokeWidth: 1,
),
),
borderData: FlBorderData(
show: true,
border: Border(
bottom: BorderSide(
color: Theme.of(context).colorScheme.outline.withOpacity(0.3),
width: 1,
),
left: BorderSide(
color: Theme.of(context).colorScheme.outline.withOpacity(0.3),
width: 1,
),
right: BorderSide(
color: Theme.of(context).colorScheme.outline.withOpacity(0.3),
width: 1,
),
top: BorderSide(
color: Theme.of(context).colorScheme.outline.withOpacity(0.3),
width: 1,
),
),
),
),
),
);
bool checkToShowTitle(
final double minValue,
final double maxValue,
final SideTitles sideTitles,
final double appliedInterval,
final double value,
) {
if (value < 0) {
return false;
} else if (value == 0) {
return true;
}
final diff = value - minValue;
final finalValue = diff / 20;
return finalValue - finalValue.floor() == 0;
}
}