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Add flutter_web samples (#75)
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Kevin Moore
committed by
Andrew Brogdon
Andrew Brogdon
parent
42f2dce01b
commit
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174
web/charts/example/lib/combo_chart/numeric_line_bar.dart
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174
web/charts/example/lib/combo_chart/numeric_line_bar.dart
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// Copyright 2018 the Charts project authors. Please see the AUTHORS file
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// for details.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/// Example of a numeric combo chart with two series rendered as bars, and a
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/// third rendered as a line.
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// EXCLUDE_FROM_GALLERY_DOCS_START
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import 'dart:math';
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// EXCLUDE_FROM_GALLERY_DOCS_END
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import 'package:charts_flutter/flutter.dart' as charts;
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import 'package:flutter_web/material.dart';
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class NumericComboLineBarChart extends StatelessWidget {
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final List<charts.Series> seriesList;
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final bool animate;
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NumericComboLineBarChart(this.seriesList, {this.animate});
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/// Creates a [LineChart] with sample data and no transition.
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factory NumericComboLineBarChart.withSampleData() {
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return new NumericComboLineBarChart(
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_createSampleData(),
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// Disable animations for image tests.
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animate: false,
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);
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}
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// EXCLUDE_FROM_GALLERY_DOCS_START
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// This section is excluded from being copied to the gallery.
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// It is used for creating random series data to demonstrate animation in
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// the example app only.
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factory NumericComboLineBarChart.withRandomData() {
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return new NumericComboLineBarChart(_createRandomData());
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}
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/// Create random data.
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static List<charts.Series<LinearSales, num>> _createRandomData() {
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final random = new Random();
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final desktopSalesData = [
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new LinearSales(0, random.nextInt(100)),
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new LinearSales(1, random.nextInt(100)),
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new LinearSales(2, random.nextInt(100)),
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new LinearSales(3, random.nextInt(100)),
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];
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final tableSalesData = [
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new LinearSales(0, desktopSalesData[0].sales),
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new LinearSales(1, desktopSalesData[1].sales),
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new LinearSales(2, desktopSalesData[2].sales),
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new LinearSales(3, desktopSalesData[3].sales),
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];
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final mobileSalesData = [
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new LinearSales(0, tableSalesData[0].sales * 2),
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new LinearSales(1, tableSalesData[1].sales * 2),
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new LinearSales(2, tableSalesData[2].sales * 2),
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new LinearSales(3, tableSalesData[3].sales * 2),
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];
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return [
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new charts.Series<LinearSales, int>(
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id: 'Desktop',
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colorFn: (_, __) => charts.MaterialPalette.blue.shadeDefault,
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domainFn: (LinearSales sales, _) => sales.year,
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measureFn: (LinearSales sales, _) => sales.sales,
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data: desktopSalesData,
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)
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// Configure our custom bar renderer for this series.
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..setAttribute(charts.rendererIdKey, 'customBar'),
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new charts.Series<LinearSales, int>(
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id: 'Tablet',
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colorFn: (_, __) => charts.MaterialPalette.red.shadeDefault,
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domainFn: (LinearSales sales, _) => sales.year,
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measureFn: (LinearSales sales, _) => sales.sales,
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data: tableSalesData,
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)
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// Configure our custom bar renderer for this series.
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..setAttribute(charts.rendererIdKey, 'customBar'),
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new charts.Series<LinearSales, int>(
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id: 'Mobile',
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colorFn: (_, __) => charts.MaterialPalette.green.shadeDefault,
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domainFn: (LinearSales sales, _) => sales.year,
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measureFn: (LinearSales sales, _) => sales.sales,
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data: mobileSalesData),
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];
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}
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// EXCLUDE_FROM_GALLERY_DOCS_END
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@override
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Widget build(BuildContext context) {
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return new charts.NumericComboChart(seriesList,
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animate: animate,
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// Configure the default renderer as a line renderer. This will be used
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// for any series that does not define a rendererIdKey.
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defaultRenderer: new charts.LineRendererConfig(),
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// Custom renderer configuration for the bar series.
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customSeriesRenderers: [
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new charts.BarRendererConfig(
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// ID used to link series to this renderer.
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customRendererId: 'customBar')
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]);
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}
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/// Create one series with sample hard coded data.
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static List<charts.Series<LinearSales, int>> _createSampleData() {
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final desktopSalesData = [
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new LinearSales(0, 5),
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new LinearSales(1, 25),
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new LinearSales(2, 100),
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new LinearSales(3, 75),
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];
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final tableSalesData = [
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new LinearSales(0, 5),
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new LinearSales(1, 25),
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new LinearSales(2, 100),
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new LinearSales(3, 75),
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];
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final mobileSalesData = [
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new LinearSales(0, 10),
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new LinearSales(1, 50),
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new LinearSales(2, 200),
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new LinearSales(3, 150),
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];
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return [
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new charts.Series<LinearSales, int>(
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id: 'Desktop',
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colorFn: (_, __) => charts.MaterialPalette.blue.shadeDefault,
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domainFn: (LinearSales sales, _) => sales.year,
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measureFn: (LinearSales sales, _) => sales.sales,
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data: desktopSalesData,
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)
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// Configure our custom bar renderer for this series.
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..setAttribute(charts.rendererIdKey, 'customBar'),
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new charts.Series<LinearSales, int>(
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id: 'Tablet',
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colorFn: (_, __) => charts.MaterialPalette.red.shadeDefault,
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domainFn: (LinearSales sales, _) => sales.year,
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measureFn: (LinearSales sales, _) => sales.sales,
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data: tableSalesData,
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)
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// Configure our custom bar renderer for this series.
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..setAttribute(charts.rendererIdKey, 'customBar'),
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new charts.Series<LinearSales, int>(
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id: 'Mobile',
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colorFn: (_, __) => charts.MaterialPalette.green.shadeDefault,
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domainFn: (LinearSales sales, _) => sales.year,
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measureFn: (LinearSales sales, _) => sales.sales,
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data: mobileSalesData),
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];
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}
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}
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/// Sample linear data type.
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class LinearSales {
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final int year;
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final int sales;
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LinearSales(this.year, this.sales);
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}
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