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Charts

Export Several Charts

The DevExpress.viz.exportWidgets(widgetInstances, options) method allows you to export several charts to a single image or document. The widgetInstances parameter accepts an array with the following format:

[
    [ widgetInstance0_1, widgetInstance0_2, ..., widgetInstance0_N ],
    [ widgetInstance1_1, widgetInstance1_2, ..., widgetInstance1_M ],
    ...
    [ widgetInstanceP_1, widgetInstanceP_2, ..., widgetInstanceP_R ]
]

Each nested array contains widget instances that should be in the same row in the exported document. In this demo, chartInstance and pieChartInstance occupy the only row in the document.

The options parameter accepts an object whose fields allow you to configure export options. In this demo, we specify the fileName and format. Refer to the method description for information on other available fields.

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import React from 'react'; import Chart, { Series, Label, Legend } from 'devextreme-react/chart'; import PieChart, { Series as PieSeries, Label as PieLabel, Connector } from 'devextreme-react/pie-chart'; import { Button } from 'devextreme-react/button'; import { allMedals, goldMedals } from './data.js'; import { exportWidgets } from 'devextreme/viz/export'; class App extends React.Component { constructor(props) { super(props); this.chartRef = React.createRef(); this.pieChartRef = React.createRef(); this.onClick = this.onClick.bind(this); } render() { return ( <div id="chart-demo"> <div className="charts"> <Chart id="chart" ref={this.chartRef} dataSource={goldMedals} rotated={true} title="Olympic Gold Medals in 2008" > <Series type="bar" argumentField="country" valueField="medals" color="#f3c40b" > <Label visible={true} /> </Series> <Legend visible={false} /> </Chart> <PieChart id="pieChart" ref={this.pieChartRef} dataSource={allMedals} palette="Harmony Light" title={'Total Olympic Medals\n in 2008'} > <PieSeries argumentField="country" valueField="medals" > <PieLabel visible={true}> <Connector visible={true} /> </PieLabel> </PieSeries> </PieChart> </div> <div className="controls-pane"> <Button id="export" width={145} icon="export" text="Export" type="default" onClick={this.onClick} /> </div> </div> ); } get chart() { return this.chartRef.current.instance; } get pieChart() { return this.pieChartRef.current.instance; } onClick() { exportWidgets([[this.chart, this.pieChart]], { fileName: 'chart', format: 'PNG' }); } } 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>
#chart-demo { height: 460px; } .charts { width: 820px; margin: 0 auto; height: 374px; margin-bottom: 40px; font-size: 0; } #chart, #pieChart { width: 395px; height: 100%; display: inline-block; vertical-align: top; } #chart { margin-right: 30px; } .controls-pane { text-align: center; }
export const allMedals = [{ country: 'USA', medals: 110 }, { country: 'China', medals: 100 }, { country: 'Russia', medals: 71 }, { country: 'UK', medals: 47 }, { country: 'Australia', medals: 46 }, { country: 'Germany', medals: 41 }, { country: 'France', medals: 41 }, { country: 'South Korea', medals: 31 }]; export const goldMedals = [{ country: 'China', medals: 51 }, { country: 'USA', medals: 36 }, { country: 'Russia', medals: 22 }, { country: 'UK', medals: 19 }, { country: 'Germany', medals: 16 }, { country: 'Australia', medals: 14 }, { country: 'South Korea', medals: 13 }, { country: 'France', medals: 7 }];
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', 'stackblur-canvas': 'npm:stackblur-canvas', 'rgbcolor': 'npm:rgbcolor', 'canvg': 'npm:canvg', // 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 } });