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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,174 @@ | ||
| import 'dart:math'; | ||
| import 'dart:ui'; | ||
|
|
||
| import 'package:example/common/utils/vm_helper.dart'; | ||
| import 'package:fl_chart/fl_chart.dart'; | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:intl/intl.dart'; | ||
|
|
||
| class MemoryUsageChart extends StatefulWidget { | ||
| @override | ||
| _MemoryUsageChartState createState() => _MemoryUsageChartState(); | ||
| } | ||
|
|
||
| class _MemoryUsageChartState extends State<MemoryUsageChart> { | ||
| @override | ||
| void initState() { | ||
| super.initState(); | ||
| VMHelper().addListener(updateMemoryUsage); | ||
| } | ||
|
|
||
| void updateMemoryUsage() { | ||
| if (mounted) { | ||
| setState(() {}); | ||
| } | ||
| } | ||
|
|
||
| @override | ||
| void dispose() { | ||
| VMHelper().removeListener(updateMemoryUsage); | ||
| super.dispose(); | ||
| } | ||
|
|
||
| @override | ||
| Widget build(BuildContext context) { | ||
| if (VMHelper().serviceClient == null) { | ||
| return Container(); | ||
| } | ||
| return Container( | ||
| padding: const EdgeInsets.only(left: 30, right: 30, top: 5, bottom: 5), | ||
| width: window.physicalSize.width, | ||
| height: 200, | ||
| child: LineChart( | ||
| getData(), | ||
| swapAnimationDuration: const Duration(milliseconds: 250), | ||
| ), | ||
| ); | ||
| } | ||
|
|
||
| LineChartData getData() { | ||
| final DateTime now = DateTime.now(); | ||
| final List<LineChartBarData> data = getLineData(now); | ||
|
|
||
| return LineChartData( | ||
| lineTouchData: LineTouchData( | ||
| touchTooltipData: LineTouchTooltipData( | ||
| tooltipBgColor: Colors.blueGrey.withOpacity(0.8), | ||
| ), | ||
| touchCallback: (LineTouchResponse touchResponse) {}, | ||
| handleBuiltInTouches: true, | ||
| ), | ||
| gridData: FlGridData( | ||
| show: false, | ||
| ), | ||
| titlesData: FlTitlesData( | ||
| bottomTitles: SideTitles( | ||
| showTitles: true, | ||
| getTextStyles: (double value) => const TextStyle( | ||
| color: Color(0xff72719b), | ||
| fontWeight: FontWeight.bold, | ||
| fontSize: 16, | ||
| ), | ||
| margin: 10, | ||
| getTitles: (double value) { | ||
| final int millisecondsSinceEpoch = value.toInt(); | ||
| final DateTime dateTime = | ||
| DateTime.fromMillisecondsSinceEpoch(millisecondsSinceEpoch); | ||
|
|
||
| return DateFormat('HH:mm').format(dateTime); | ||
| }, | ||
| interval: const Duration(minutes: 1).inMilliseconds.toDouble(), | ||
| ), | ||
| leftTitles: SideTitles( | ||
| showTitles: true, | ||
| getTextStyles: (double value) => const TextStyle( | ||
| color: Color(0xff75729e), | ||
| fontWeight: FontWeight.bold, | ||
| fontSize: 14, | ||
| ), | ||
| interval: 100, | ||
| getTitles: (double value) { | ||
| return value.toInt().toString() + 'M'; | ||
| }, | ||
| margin: 20, | ||
| ), | ||
| ), | ||
| borderData: FlBorderData( | ||
| show: true, | ||
| border: const Border( | ||
| bottom: BorderSide( | ||
| color: Color(0xff4e4965), | ||
| width: 2, | ||
| ), | ||
| left: BorderSide( | ||
| color: Color(0xff4e4965), | ||
| width: 2, | ||
| ), | ||
| right: BorderSide( | ||
| color: Colors.transparent, | ||
| ), | ||
| top: BorderSide( | ||
| color: Colors.transparent, | ||
| ), | ||
| ), | ||
| ), | ||
| minX: now | ||
| .subtract(const Duration(minutes: 1)) | ||
| .millisecondsSinceEpoch | ||
| .toDouble(), | ||
| maxX: now.millisecondsSinceEpoch.toDouble(), | ||
| minY: 0, | ||
| maxY: max(500, maxY ?? 0), | ||
| lineBarsData: data, | ||
| ); | ||
| } | ||
|
|
||
| double? minY; | ||
| double? maxY; | ||
| List<LineChartBarData> getLineData(DateTime now) { | ||
| final List<FlSpot> data1 = <FlSpot>[]; | ||
| final List<FlSpot> data2 = <FlSpot>[]; | ||
| final List<FlSpot> data3 = <FlSpot>[]; | ||
| for (final MyMemoryUsage item in VMHelper().mainHistoryMemoryInfo) { | ||
| data1.add(FlSpot(item.dataTime.millisecondsSinceEpoch.toDouble(), | ||
| item.todouble(item.heapUsage))); | ||
| data2.add(FlSpot(item.dataTime.millisecondsSinceEpoch.toDouble(), | ||
| item.todouble(item.heapCapacity))); | ||
| data3.add(FlSpot(item.dataTime.millisecondsSinceEpoch.toDouble(), | ||
| item.todouble(item.externalUsage))); | ||
|
|
||
| final double minValue = | ||
| min(min(item.heapUsage, item.heapCapacity), item.externalUsage); | ||
|
|
||
| final double maxValue = | ||
| max(max(item.heapUsage, item.heapCapacity), item.externalUsage); | ||
|
|
||
| minY = min(maxY ?? minValue.toDouble(), minValue.toDouble()); | ||
| maxY = max(maxY ?? maxValue.toDouble(), maxValue.toDouble()); | ||
| } | ||
|
|
||
| return <LineChartBarData>[ | ||
| getLineChartBarData(data1, Colors.red), | ||
| getLineChartBarData(data2, Colors.blue), | ||
| getLineChartBarData(data3, Colors.green), | ||
| ]; | ||
| } | ||
|
|
||
| LineChartBarData getLineChartBarData(List<FlSpot> spots, Color color) { | ||
| return LineChartBarData( | ||
| spots: spots, | ||
| isCurved: true, | ||
| colors: <Color>[ | ||
| color, | ||
| ], | ||
| barWidth: 2, | ||
| isStrokeCapRound: true, | ||
| dotData: FlDotData( | ||
| show: false, | ||
| ), | ||
| belowBarData: BarAreaData( | ||
| show: false, | ||
| ), | ||
| ); | ||
| } | ||
| } |
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