Palettes (Angular)

The FlexChart control automatically picks colors for each series based on a default palette, which you can override by setting the palette property.

Learn about FlexChart | Styling Series Documentation | FlexChart API Reference

This example uses Angular.

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; // import '@angular/compiler'; import { Component, Inject, enableProdMode, NgModule } from '@angular/core'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { BrowserModule } from '@angular/platform-browser'; import { WjInputModule } from '@grapecity/wijmo.angular2.input'; import { WjChartModule } from '@grapecity/wijmo.angular2.chart'; import { DataService } from './app.data'; import { Color } from '@grapecity/wijmo'; import * as wjInput from '@grapecity/wijmo.input'; import * as wjChart from '@grapecity/wijmo.chart'; // @Component({ selector: 'app-component', templateUrl: 'src/app.component.html' }) export class AppComponent { data: any[]; paletteData: any; palette: any; // constructor(@Inject(DataService) private dataService: DataService) { this.data = dataService.getData(); this.paletteData = dataService.getPaletteData(); } // selectedIndexChanged(s: wjInput.ComboBox) { this.palette = s.selectedItem.colors; } // formatItem(e: any) { let item = e.data; if (item.name && item.colors) { // create palette swatch let html = '<div style="width:100px;display:inline-block">' + item.name + '</div>'; item.colors.forEach((clr: any) => html += `<div style="width:1em;height:1em;display:inline-block;background-color:${clr};"></div>`); e.item.innerHTML = html; } } // chartItemFormatter(engine: any, ht: wjChart.HitTestInfo, defaultRenderer: any) { const pal = ht.chart.palette ? ht.chart.palette : wjChart.Palettes.standard; engine.fill = pal[ht.pointIndex]; // each bar has own color engine.stroke = null; defaultRenderer(); } // pieItemFormatter(engine: any, ht: wjChart.HitTestInfo, defaultRenderer: any) { let clr = new Color(engine.fill); clr.a = 1; // use opaque color engine.fill = clr.toString(); engine.stroke = null; defaultRenderer(); } } // @NgModule({ imports: [WjInputModule, WjChartModule, BrowserModule], declarations: [AppComponent], providers: [DataService], bootstrap: [AppComponent] }) export class AppModule { } // enableProdMode(); // Bootstrap application with hash style navigation and global services. platformBrowserDynamic().bootstrapModule(AppModule);
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexChart Palettes</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- Polyfills --> <script src="node_modules/core-js/client/shim.min.js"></script> <script src="node_modules/zone.js/fesm2015/zone.min.js"></script> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> // workaround to load 'rxjs/operators' from the rxjs bundle System.import('rxjs').then(function (m) { System.set(SystemJS.resolveSync('rxjs/operators'), System.newModule(m.operators)); System.import('./src/app.component'); }); </script> </head> <body> <app-component></app-component> </body> </html>
<div class="container-fluid"> <div class="row"> <label for="cb"> Please select a Palette: </label> <wj-combo-box #cb [itemsSource]="paletteData" (selectedIndexChanged)="selectedIndexChanged(cb)" (formatItem)="formatItem($event)" [showGroups]=true [displayMemberPath]="name"> </wj-combo-box> </div> <div class="row"> <div class="col"> <wj-flex-chart header="Country GDP" footer="2016, in USD billions" [itemsSource]="data" bindingX="country" [palette]="palette" [itemFormatter]="chartItemFormatter" tooltipContent="<b>{country}</b><br>{value}"> <wj-flex-chart-series binding="2016"></wj-flex-chart-series> </wj-flex-chart> </div> <div class="col"> <wj-flex-pie header="Country GDP" footer="2016, in USD billions" [itemsSource]="data" bindingName="country" binding="2016" [palette]="palette" [itemFormatter]="pieItemFormatter"> </wj-flex-pie> </div> </div> </div>
import { Injectable } from '@angular/core'; import { CollectionView } from '@grapecity/wijmo'; import { Palettes } from '@grapecity/wijmo.chart'; // @Injectable() export class DataService { // list of country GDP // https://en.wikipedia.org/wiki/List_of_IMF_ranked_countries_by_GDP getData() { return [ { country: 'United States', '2014': 17348075, '2015': 18036650, '2016': 18624450 }, { country: 'China', '2014': 10356508, '2015': 11181556, '2016': 11232110 }, { country: 'Japan', '2014': 4602367, '2015': 4124211, '2016': 4936540 }, { country: 'Germany', '2014': 3874437, '2015': 3365293, '2016': 3479230 }, { country: 'United Kingdom', '2014': 2950039, '2015': 2858482, '2016': 2629190 }, { country: 'France', '2014': 2833687, '2015': 2420163, '2016': 2466470 }, { country: 'India', '2014': 2051228, '2015': 2073002, '2016': 2263790 }, { country: 'Italy', '2014': 2147744, '2015': 1815759, '2016': 1850740 } ]; } // getPaletteData() { let items = []; let palettes = Palettes; for (let key in palettes) { if (!palettes.hasOwnProperty(key)) { continue; } if (Array.isArray(palettes[key])) { items.push({ name: key, colors: palettes[key] }); } else { for (let subkey in palettes[key]) { if (palettes[key].hasOwnProperty(subkey)) { items.push({ name: subkey, colors: palettes[key][subkey], group: key }); } } } } return new CollectionView(items, { groupDescriptions: ['group'] }); } }
body { margin-bottom: 24px; } label { margin-right: 3px; } .row { margin: 1em; } .col { float:left; width: 50%; } .wj-flexchart { margin: 12px; height: 360px; }
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