Legends and Titles (React)

The FlexChart control has header, footer and the Axis title properties that you can use to include more information in your charts. You can also customize these sections of the chart using CSS.

Learn about FlexChart | Legends and Titles Documentation | FlexChart API Reference

This example uses React.

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import ReactDOM from 'react-dom/client'; import React, { useRef, useState } from 'react'; import useEvent from 'react-use-event-hook'; import { addClass, toggleClass } from '@grapecity/wijmo'; import * as Chart from '@grapecity/wijmo.react.chart'; import * as Input from '@grapecity/wijmo.react.input'; import './app.css'; import { data, palette } from './data'; function App() { const [header, setHeader] = useState('My Great Chart'); const [footer, setFooter] = useState('powered by Wijmo\'s FlexChart'); const [xTitle, setXTitle] = useState('country'); const [yTitle, setYTitle] = useState('values/units'); const [customTitles, setCustomTitles] = useState(true); const [customLegend, setCustomLegend] = useState(true); const [legendPositionSource, setLegendPositionSource] = useState(['None', 'Left', 'Top', 'Right', 'Bottom']); const [legendPosition, setLegendPosition] = useState('Left'); const theChartRef = useRef(null); const chartInitialized = useEvent((chart) => { theChartRef.current = chart; addClass(chart.hostElement, 'custom-titles custom-legend'); }); const headerChanged = useEvent((combo) => { setHeader(combo.text); }); const footerChanged = useEvent((combo) => { setFooter(combo.text); }); const xTitleChanged = useEvent((combo) => { setXTitle(combo.text); }); const yTitleChanged = useEvent((combo) => { setYTitle(combo.text); }); const customTitlesChanged = () => { setCustomTitles(!customTitles); if (theChartRef.current) { toggleClass(theChartRef.current.hostElement, 'custom-titles'); } }; const customLegendChanged = () => { setCustomLegend(!customLegend); if (theChartRef.current) { toggleClass(theChartRef.current.hostElement, 'custom-legend'); } }; const legendPositionChanged = useEvent((combo) => { setLegendPosition(combo.text); }); return (<div className="container-fluid"> <div> <label>Header:</label> <Input.ComboBox textChanged={headerChanged} text={header}> </Input.ComboBox> </div> <div> <label>Footer:</label> <Input.ComboBox textChanged={footerChanged} text={footer}> </Input.ComboBox> </div> <div> <label>X-Axis Title:</label> <Input.ComboBox textChanged={xTitleChanged} text={xTitle}> </Input.ComboBox> </div> <div> <label>Y-Axis Title:</label> <Input.ComboBox textChanged={yTitleChanged} text={yTitle}> </Input.ComboBox> </div> <div> <label htmlFor="customTitles">Custom Titles: </label> <input id="customTitles" type="checkbox" checked={customTitles} onChange={customTitlesChanged}/> </div> <div> <label htmlFor="customLegend">Custom Legend: </label> <input id="customLegend" type="checkbox" checked={customLegend} onChange={customLegendChanged}/> </div> <div> <label>Legend Position: </label> <Input.ComboBox itemsSource={legendPositionSource} textChanged={legendPositionChanged} text={legendPosition}> </Input.ComboBox> </div> <div className="form-group"> <Chart.FlexChart header={header} footer={footer} bindingX="country" palette={palette} itemsSource={data} initialized={chartInitialized}> <Chart.FlexChartAxis wjProperty="axisX" title={xTitle}/> <Chart.FlexChartAxis wjProperty="axisY" title={yTitle}/> <Chart.FlexChartSeries binding="sales" name="Sales"/> <Chart.FlexChartSeries binding="expenses" name="Expenses"/> <Chart.FlexChartSeries binding="downloads" name="Downloads"/> <Chart.FlexChartLegend position={legendPosition}/> </Chart.FlexChart> </div> </div>); } const container = document.getElementById('app'); if (container) { const root = ReactDOM.createRoot(container); root.render(<App />); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo Wijmo FlexChart Legends and Titles</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div id="app"></div> </body> </html>
.wj-flexchart { height: 300px; } label { width: 150px; text-align: right; margin-right: 3px; } .wj-control { margin-bottom: 3px; } /* custom color for all titles */ .custom-titles.wj-flexchart .wj-title { fill: #42357C; } /* custom size/weight for header */ .custom-titles.wj-flexchart .wj-header .wj-title { font-size: 120%; font-weight: bold; } /* custom size/weight for footer */ .custom-titles.wj-flexchart .wj-footer .wj-title { font-size: 90%; font-weight: bold; } /* custom style for axis-x/y titles */ .custom-titles.wj-flexchart .wj-axis-x .wj-title, .custom-titles.wj-flexchart .wj-axis-y .wj-title { font-size: 75%; font-style: normal; opacity: .5; } .wj-flexchart .wj-legend .wj-label { opacity: .9; font-size: 80%; } /* custom color for legend box */ .custom-legend.wj-flexchart .wj-legend>rect { fill: #003000; } /* custom color for legend labels */ .custom-legend.wj-flexchart .wj-legend .wj-label { fill: white; font-style: italic; }
import { isArray } from '@grapecity/wijmo'; import { Palettes } from '@grapecity/wijmo.chart'; function getData() { let countries = ['US', 'Germany', 'UK', 'Japan', 'Italy', 'Greece'], data = []; // for (let i = 0; i < countries.length; i++) { data.push({ country: countries[i], sales: Math.random() * 10000, expenses: Math.random() * 5000, downloads: Math.round(Math.random() * 20000) }); } // return data; } function getRandomPalette() { let palettes = Object.keys(Palettes).filter(prop => isArray(Palettes[prop])); let rand = Math.floor(Math.random() * palettes.length); // return Palettes[palettes[rand]]; } export const data = getData(); export const palette = getRandomPalette();
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