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Pie Charts

Palette

Documentation

The PieChart, like other DevExtreme data visualization widgets, provides several built-in palettes. In this demo, you can use the drop-down menus under the widget to choose a palette and change how it is extended when it has an insufficient number of colors.

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import React from 'react'; import PieChart, { Series, Legend } from 'devextreme-react/pie-chart'; import SelectBox from 'devextreme-react/select-box'; import { paletteCollection, paletteExtensionModes, dataSource } from './data.js'; import { getPalette } from 'devextreme/viz/palette'; class App extends React.Component { constructor(props) { super(props); this.state = { palette: paletteCollection[0], extensionMode: paletteExtensionModes[1] }; this.setPalette = this.setPalette.bind(this); this.setExtensionMode = this.setExtensionMode.bind(this); } render() { return ( <React.Fragment> <div className="flex-container"> <PieChart id="pie" dataSource={dataSource} palette={this.state.palette} paletteExtensionMode={this.state.extensionMode.toLowerCase()} > <Legend visible={false} /> <Series /> </PieChart> <div className="palette-container flex-block"> {getPalette(this.state.palette).simpleSet.map(color => ( <div className="palette-item" style={{ backgroundColor: color }} key={color} /> ))} </div> </div> <div className="options"> <div className="caption">Options</div> <div className="option"> <span>Palette </span> <SelectBox items={paletteCollection} defaultValue={this.state.palette} onValueChanged={this.setPalette} /> </div> &nbsp; <div className="option"> <span>Palette Extension Mode </span> <SelectBox items={paletteExtensionModes} defaultValue={this.state.extensionMode} onValueChanged={this.setExtensionMode} /> </div> </div> </React.Fragment> ); } setPalette(e) { this.setState({ palette: e.value }); } setExtensionMode(e) { this.setState({ extensionMode: e.value }); } } export default App;
import React from 'react'; import ReactDOM from 'react-dom'; import App from './App.js'; ReactDOM.render( <App />, document.getElementById('app') );
<!DOCTYPE html> <html> <head> <title>DevExtreme Demo</title> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.4/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.4/css/dx.light.css" /> <link rel="stylesheet" type="text/css" href="styles.css" /> <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script> <script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script> <script type="text/javascript" src="config.js"></script> <script type="text/javascript"> System.import('./index.js'); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"></div> </div> </body> </html>
.flex-container{ display: flex; justify-content: center; align-items: center; flex-direction: row; } #pie { height: 350px; width: 500px; margin: 20px; } .palette-container{ float: left; } .palette-item{ width: 40px; height: 40px; } .options { padding: 20px; background-color: rgba(191, 191, 191, 0.15); margin-top: 20px; } .caption { font-size: 18px; font-weight: 500; } .option { display: inline-block; min-width: 320px; margin-top: 5px; } .option > span { margin: 0 10px 0 0; } .option > .dx-widget { display: inline-block; vertical-align: middle; }
export const paletteCollection = ['Material', 'Soft Pastel', 'Harmony Light', 'Pastel', 'Bright', 'Soft', 'Ocean', 'Office', 'Vintage', 'Violet', 'Carmine', 'Dark Moon', 'Soft Blue', 'Dark Violet', 'Green Mist']; export const paletteExtensionModes = ['Alternate', 'Blend', 'Extrapolate']; const data = []; for (let i = 0; i < 20; i++) { data.push({ arg: `item${i}`, val: 1 }); } export const dataSource = data;
System.config({ transpiler: 'plugin-babel', paths: { 'npm:': 'https://unpkg.com/' }, defaultExtension: 'js', map: { 'react': 'npm:react@16/umd/react.development.js', 'react-dom': 'npm:react-dom@16/umd/react-dom.development.js', 'prop-types': 'npm:prop-types/prop-types.js', 'devextreme': 'npm:devextreme@19.2', 'devextreme-react': 'npm:devextreme-react@19.2', 'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js', 'quill': 'npm:quill@1.3.7/dist/quill.js', 'devexpress-diagram': 'npm:devexpress-diagram', 'devexpress-gantt': 'npm:devexpress-gantt', // SystemJS plugins 'plugin-babel': 'npm:systemjs-plugin-babel@0/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0/systemjs-babel-browser.js' }, packages: { 'devextreme': { defaultExtension: 'js' }, 'devextreme-react': { main: 'index.js' } }, babelOptions: { sourceMaps: false, stage0: true, react: true } });