55 lines
1.5 KiB
Dart
55 lines
1.5 KiB
Dart
/// Donut chart example. This is a simple pie chart with a hole in the middle.
|
|
import 'package:charts_flutter/flutter.dart' as charts;
|
|
import 'package:flutter/material.dart';
|
|
|
|
class DonutPieChart extends StatelessWidget {
|
|
DonutPieChart(this.seriesList, {this.animate});
|
|
|
|
/// Creates a [PieChart] with sample data and no transition.
|
|
factory DonutPieChart.withSampleData() {
|
|
return new DonutPieChart(
|
|
_createSampleData(),
|
|
animate: true,
|
|
);
|
|
}
|
|
|
|
final List<charts.Series> seriesList;
|
|
final bool animate;
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return new charts.PieChart(seriesList,
|
|
animate: animate,
|
|
// Configure the width of the pie slices to 60px. The remaining space in
|
|
// the chart will be left as a hole in the center.
|
|
defaultRenderer: new charts.ArcRendererConfig(arcWidth: 60));
|
|
}
|
|
|
|
/// Create one series with sample hard coded data.
|
|
static List<charts.Series<LinearSales, int>> _createSampleData() {
|
|
final data = [
|
|
new LinearSales(0, 100),
|
|
new LinearSales(1, 75),
|
|
new LinearSales(2, 25),
|
|
new LinearSales(3, 5),
|
|
];
|
|
|
|
return [
|
|
new charts.Series<LinearSales, int>(
|
|
id: 'Sales',
|
|
domainFn: (LinearSales sales, _) => sales.year,
|
|
measureFn: (LinearSales sales, _) => sales.sales,
|
|
data: data,
|
|
)
|
|
];
|
|
}
|
|
}
|
|
|
|
/// Sample linear data type.
|
|
class LinearSales {
|
|
LinearSales(this.year, this.sales);
|
|
|
|
final int year;
|
|
final int sales;
|
|
}
|