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Merged
merged 1 commit into from
Feb 24, 2021
Merged

committed #2

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95 changes: 50 additions & 45 deletions lib/main.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -11,9 +11,7 @@ class ChartApp extends StatelessWidget {
Widget build(BuildContext context) {
return MaterialApp(
title: 'Chart Demo',
theme: ThemeData(
primarySwatch: Colors.blue
),
theme: ThemeData(primarySwatch: Colors.blue),
home: MyHomePage(),
);
}
Expand All @@ -28,6 +26,14 @@ class MyHomePage extends StatefulWidget {
}

class _MyHomePageState extends State<MyHomePage> {
TooltipBehavior _tooltipBehavior;

@override
void initState() {
_tooltipBehavior = TooltipBehavior(enable: true);
super.initState();
}

@override
Widget build(BuildContext context) {
return Scaffold(
Expand All @@ -39,53 +45,52 @@ class _MyHomePageState extends State<MyHomePage> {
height: 500,
width: 320,
child: SfCartesianChart(
backgroundColor: Colors.white,
plotAreaBackgroundColor: Colors.white,
onTooltipRender: (TooltipArgs args) {
if (args.pointIndex == 0) {
//Tooltip without header
args.header = '';
}
if (args.pointIndex == 1) {
//Tooltip with customized header
args.header = 'Sold';
}
if (args.pointIndex == 2) {
//Tooltip with X and Y positions of data points
args.header = 'x : y';
args.text = '${args.locationX.floor()} : ${args.locationY.floor()}';
}
if(args.pointIndex == 3) {
//Tooltip with formatted DateTime values
List<CartesianChartPoint<dynamic>> chartdata = args.dataPoints;
args.header = DateFormat('d MMM yyyy').format(chartdata[3].x);
args.text = '${chartdata[3].y}';
}
},
backgroundColor: Colors.white,
plotAreaBackgroundColor: Colors.white,
onTooltipRender: (TooltipArgs args) {
if (args.pointIndex == 0) {
//Tooltip without header
args.header = '';
}
if (args.pointIndex == 1) {
//Tooltip with customized header
args.header = 'Sold';
}
if (args.pointIndex == 2) {
//Tooltip with X and Y positions of data points
args.header = 'x : y';
args.text =
'${args.locationX.floor()} : ${args.locationY.floor()}';
}
if (args.pointIndex == 3) {
//Tooltip with formatted DateTime values
List<CartesianChartPoint<dynamic>> chartdata =
args.dataPoints;
args.header =
DateFormat('d MMM yyyy').format(chartdata[3].x);
args.text = '${chartdata[3].y}';
}
},
primaryXAxis: DateTimeAxis(
interval: 30,
intervalType: DateTimeIntervalType.days
),
interval: 30, intervalType: DateTimeIntervalType.days),
// Enable tooltip
tooltipBehavior: TooltipBehavior(enable: true),
tooltipBehavior: _tooltipBehavior,
series: <ChartSeries<SalesData, DateTime>>[
LineSeries<SalesData, DateTime>(
enableTooltip: true,
dataSource: <SalesData>[
SalesData(DateTime(2020, 01, 31), 35),
SalesData(DateTime(2020, 02, 28), 28),
SalesData(DateTime(2020, 03, 31), 34),
SalesData(DateTime(2020, 04, 30), 32),
SalesData(DateTime(2020, 05, 31), 40)
],
xValueMapper: (SalesData sales, _) => sales.date,
yValueMapper: (SalesData sales, _) => sales.sales,
enableTooltip: true,
dataSource: <SalesData>[
SalesData(DateTime(2020, 01, 31), 35),
SalesData(DateTime(2020, 02, 28), 28),
SalesData(DateTime(2020, 03, 31), 34),
SalesData(DateTime(2020, 04, 30), 32),
SalesData(DateTime(2020, 05, 31), 40)
],
xValueMapper: (SalesData sales, _) => sales.date,
yValueMapper: (SalesData sales, _) => sales.sales,
)
]
),
]),
),
)
);
));
}
}

Expand All @@ -94,4 +99,4 @@ class SalesData {

final DateTime date;
final double sales;
}
}