Palettes (Vue)

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 Vue.

<template> <div class="container-fluid"> <div class="row"> <label>Please select a Palette:</label> <wj-combo-box displayMemberPath="name" :showGroups="true" :itemsSource="paletteData" :selectedIndexChanged="selectedIndexChanged" :formatItem="formatItem"></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" tooltipContent="<b>{country}</b><br>{value}" :palette="palette" :itemFormatter="chartItemFormatter"> <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> </template> <script> import "@mescius/wijmo.styles/wijmo.css"; import "bootstrap.css"; import { createApp } from "vue" import { registerCore } from "@mescius/wijmo.vue2.core"; import { registerInput } from "@mescius/wijmo.vue2.input"; import { registerChart } from "@mescius/wijmo.vue2.chart"; import { getData, getPalettes } from "./data"; import { Color } from "@mescius/wijmo"; import { Palettes } from "@mescius/wijmo.chart"; let App = { name: "app", data: function () { return { data: getData(), palette: null, paletteData: getPalettes(), }; }, methods: { selectedIndexChanged: function (s) { this.palette = s.selectedItem.colors; }, formatItem: function (s, e) { 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) => (html += `<div style="width:1em;height:1em;display:inline-block;background-color:${clr};"></div>`)); e.item.innerHTML = html; } }, chartItemFormatter: function (engine, ht, defRender) { const pal = ht.chart.palette ? ht.chart.palette : Palettes.standard; engine.fill = pal[ht.pointIndex]; // each bar has own color engine.stroke = null; defRender(); }, pieItemFormatter: function (engine, ht, defRender) { let clr = new Color(engine.fill); clr.a = 1; // use opaque color engine.fill = clr.toString(); engine.stroke = null; defRender(); } }, }; const app = createApp(App); registerCore(app); registerInput(app); registerChart(app); app.mount('#app'); </script> <style> body { margin-bottom: 24px; } label { margin-right: 3px; margin-left: 12px; } .row { margin-top: 0.5em; margin-bottom: 0.5em; } .col { float: left; width: 50%; } .col>.wj-flexchart { margin: 12px; height: 360px; } </style>
<!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"> <!-- SystemJS --> <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.21.5/system.src.js" integrity="sha512-skZbMyvYdNoZfLmiGn5ii6KmklM82rYX2uWctBhzaXPxJgiv4XBwJnFGr5k8s+6tE1pcR1nuTKghozJHyzMcoA==" crossorigin="anonymous"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app.vue'); </script> </head> <body> <div id="app"></div> </body> </html>
import { CollectionView } from "@mescius/wijmo"; import { Palettes } from "@mescius/wijmo.chart"; // list of country GDP // https://en.wikipedia.org/wiki/List_of_IMF_ranked_countries_by_GDP export function 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 } ]; } export function getPalettes() { 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'] }); }
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