113 lines
3.4 KiB
Dart
113 lines
3.4 KiB
Dart
import 'package:fl_chart/fl_chart.dart';
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import 'package:flutter/material.dart';
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import 'dart:math';
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import '../model/reading.dart';
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import '../services/date_utility.dart';
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class ReadingGraph extends StatelessWidget {
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const ReadingGraph({super.key, required List<Reading> readings})
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: _readings = readings;
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final List<Reading> _readings;
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@override
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Widget build(BuildContext context) {
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final spots = _readings
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.map<FlSpot>(
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(e) => FlSpot(
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e.dateTime.millisecondsSinceEpoch.toDouble() / 1000 / 60,
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e.value),
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)
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.toList();
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return LineChart(
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LineChartData(
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maxY: _readings.map<double>((e) => e.value).reduce(max) + 0.05,
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minY: _readings.map<double>((e) => e.value).reduce(min) - 0.05,
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lineBarsData: [
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LineChartBarData(
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isCurved: true,
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color: Theme.of(context).colorScheme.primary,
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barWidth: 2,
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isStrokeCapRound: true,
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dotData: const FlDotData(show: false),
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spots: _readings
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.map<FlSpot>(
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(e) => FlSpot(
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e.dateTime.millisecondsSinceEpoch.toDouble() / 1000 / 60,
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e.value),
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)
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.toList(),
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)
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],
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titlesData: FlTitlesData(
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bottomTitles: _getBottomTitles(spots),
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leftTitles: _getLeftTitles(spots),
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topTitles: const AxisTitles(sideTitles: SideTitles()),
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rightTitles: const AxisTitles(sideTitles: SideTitles()),
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),
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lineTouchData: LineTouchData(
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touchTooltipData: LineTouchTooltipData(
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getTooltipColor: (touchedSpot) =>
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Theme.of(context).colorScheme.primaryContainer,
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getTooltipItems: (touchedSpots) {
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return touchedSpots.map((touchedSpot) {
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return LineTooltipItem(
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'${touchedSpot.y.toString()}\n${_getLongDate(touchedSpot.x)}',
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TextStyle(
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color: Theme.of(context).colorScheme.onPrimaryContainer,
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fontWeight: FontWeight.bold));
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}).toList();
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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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AxisTitles _getBottomTitles(List<FlSpot> spots) {
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return AxisTitles(
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sideTitles: SideTitles(
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interval: 90,
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reservedSize: 40,
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showTitles: true,
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maxIncluded: false,
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minIncluded: false,
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getTitlesWidget: (value, meta) => SideTitleWidget(
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meta: meta,
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child: Text(DateUtility.formatMinutesToHm(value)),
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),
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),
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);
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}
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AxisTitles _getLeftTitles(List<FlSpot> spots) {
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return AxisTitles(
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sideTitles: SideTitles(
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reservedSize: 50,
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showTitles: true,
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maxIncluded: false,
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minIncluded: false,
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getTitlesWidget: (value, meta) => SideTitleWidget(
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meta: meta,
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child: Text(value.toStringAsFixed(2)),
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),
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),
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);
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}
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String _getLongDate(double value) {
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DateTime date =
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DateTime.fromMillisecondsSinceEpoch((value * 1000 * 60).toInt());
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int daysDifference = (DateTime.now().weekday - date.weekday + 7) % 7;
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if (daysDifference == 0) {
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return 'Today ${DateUtility.formatDateToHm(date)}';
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} else if (daysDifference == 1) {
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return 'Yesterday ${DateUtility.formatDateToHm(date)}';
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}
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return DateUtility.formatDateToYmdhm(date);
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}
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}
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