charts
Custom Font Size And Color Axes Example
Example:
/// Custom Font Style Example
import 'package:flutter/material.dart';
import 'package:charts_flutter/flutter.dart' as charts;
/// Example of using a custom primary measure and domain axis replacing the
/// renderSpec with one with a custom font size and a custom color.
///
/// There are many axis styling options in the SmallTickRenderer allowing you
/// to customize the font, tick lengths, and offsets.
class CustomFontSizeAndColor extends StatelessWidget {
final List<charts.Series> seriesList;
final bool animate;
CustomFontSizeAndColor(this.seriesList, {this.animate});
factory CustomFontSizeAndColor.withSampleData() {
return new CustomFontSizeAndColor(
_createSampleData(),
// Disable animations for image tests.
animate: false,
);
}
@override
Widget build(BuildContext context) {
return new charts.BarChart(
seriesList,
animate: animate,
/// Assign a custom style for the domain axis.
///
/// This is an OrdinalAxisSpec to match up with BarChart's default
/// ordinal domain axis (use NumericAxisSpec or DateTimeAxisSpec for
/// other charts).
domainAxis: new charts.OrdinalAxisSpec(
renderSpec: new charts.SmallTickRendererSpec(
// Tick and Label styling here.
labelStyle: new charts.TextStyleSpec(
fontSize: 18, // size in Pts.
color: charts.MaterialPalette.black),
// Change the line colors to match text color.
lineStyle: new charts.LineStyleSpec(
color: charts.MaterialPalette.black))),
/// Assign a custom style for the measure axis.
primaryMeasureAxis: new charts.NumericAxisSpec(
renderSpec: new charts.GridlineRendererSpec(
// Tick and Label styling here.
labelStyle: new charts.TextStyleSpec(
fontSize: 18, // size in Pts.
color: charts.MaterialPalette.black),
// Change the line colors to match text color.
lineStyle: new charts.LineStyleSpec(
color: charts.MaterialPalette.black))),
);
}
/// Create series list with single series
static List<charts.Series<OrdinalSales, String>> _createSampleData() {
final globalSalesData = [
new OrdinalSales('2014', 5000),
new OrdinalSales('2015', 25000),
new OrdinalSales('2016', 100000),
new OrdinalSales('2017', 750000),
];
return [
new charts.Series<OrdinalSales, String>(
id: 'Global Revenue',
domainFn: (OrdinalSales sales, _) => sales.year,
measureFn: (OrdinalSales sales, _) => sales.sales,
data: globalSalesData,
),
];
}
}
/// Sample ordinal data type.
class OrdinalSales {
final String year;
final int sales;
OrdinalSales(this.year, this.sales);
}