Your search did not match any results.

Tooltip and Legend

This demo shows how to enable and customize tooltips in the BarGauge component. A tooltip is a small pop-up rectangle that displays the value of the bar that is currently hovered over. To enable the tooltips, set the tooltip.enabled property to true. In this demo, the text displayed by the tooltips is customized.

Backend API
import React from 'react'; import { BarGauge, Label, Tooltip, Export, Title, Font, Legend, } from 'devextreme-react/bar-gauge'; interface ScaleValue { index: number; value: number; valueText: string; } interface BarItem { color?: string, index?: number, value?: number, } const values = [121.4, 135.4, 115.9, 141.1, 127.5]; function customizeTooltip(arg: ScaleValue) { return { text: getText(arg, arg.valueText), }; } function customizeText(arg: { item: BarItem, text: any, }) { return getText(arg.item, arg.text); } function getText(item: BarItem, text: string) { return `Racer ${(item.index + 1)} - ${text} km/h`; } function App() { return ( <BarGauge id="gauge" startValue={0} endValue={200} defaultValues={values} > <Label visible={false} /> <Tooltip enabled={true} customizeTooltip={customizeTooltip} /> <Export enabled={true} /> <Title text="Average Speed by Racer"> <Font size={28} /> </Title> <Legend visible={true} customizeText={customizeText} verticalAlignment="bottom" horizontalAlignment="center" /> </BarGauge> ); } export default App;
import React from 'react'; import { BarGauge, Label, Tooltip, Export, Title, Font, Legend, } from 'devextreme-react/bar-gauge'; const values = [121.4, 135.4, 115.9, 141.1, 127.5]; function customizeTooltip(arg) { return { text: getText(arg, arg.valueText), }; } function customizeText(arg) { return getText(arg.item, arg.text); } function getText(item, text) { return `Racer ${item.index + 1} - ${text} km/h`; } function App() { return ( <BarGauge id="gauge" startValue={0} endValue={200} defaultValues={values} > <Label visible={false} /> <Tooltip enabled={true} customizeTooltip={customizeTooltip} /> <Export enabled={true} /> <Title text="Average Speed by Racer"> <Font size={28} /> </Title> <Legend visible={true} customizeText={customizeText} verticalAlignment="bottom" horizontalAlignment="center" /> </BarGauge> ); } export default App;
import React from 'react'; import ReactDOM from 'react-dom'; import App from './App.tsx'; ReactDOM.render( <App />, document.getElementById('app'), );
window.exports = window.exports || {}; window.config = { transpiler: 'ts', typescriptOptions: { module: 'system', emitDecoratorMetadata: true, experimentalDecorators: true, jsx: 'react', }, meta: { 'react': { 'esModule': true, }, 'typescript': { 'exports': 'ts', }, 'devextreme/time_zone_utils.js': { 'esModule': true, }, 'devextreme/localization.js': { 'esModule': true, }, 'devextreme/viz/palette.js': { 'esModule': true, }, }, paths: { 'npm:': 'https://unpkg.com/', }, defaultExtension: 'js', map: { 'ts': 'npm:plugin-typescript@4.2.4/lib/plugin.js', 'typescript': 'npm:typescript@4.2.4/lib/typescript.js', 'react': 'npm:react@17.0.2/umd/react.development.js', 'react-dom': 'npm:react-dom@17.0.2/umd/react-dom.development.js', 'prop-types': 'npm:prop-types@15.8.1/prop-types.js', 'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js', 'luxon': 'npm:luxon@1.28.1/build/global/luxon.min.js', 'es6-object-assign': 'npm:es6-object-assign@1.1.0', 'devextreme': 'npm:devextreme@24.1.3/cjs', 'devextreme-react': 'npm:devextreme-react@24.1.3/cjs', 'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js', 'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.2.8/dist/dx-diagram.js', 'devexpress-gantt': 'npm:devexpress-gantt@4.1.56/dist/dx-gantt.js', '@devextreme/runtime': 'npm:@devextreme/runtime@3.0.13', 'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js', 'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js', 'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js', 'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js', 'inferno-hydrate': 'npm:inferno-hydrate@7.4.11/dist/inferno-hydrate.min.js', 'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js', 'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js', 'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js', 'devextreme-cldr-data': 'npm:devextreme-cldr-data@1.0.3', // SystemJS plugins 'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js', // Prettier 'prettier/standalone': 'npm:prettier@2.8.8/standalone.js', 'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js', }, packages: { 'devextreme': { defaultExtension: 'js', }, 'devextreme-react': { main: 'index.js', }, 'devextreme/events/utils': { main: 'index', }, 'devextreme/localization/messages': { format: 'json', defaultExtension: 'json', }, 'devextreme/events': { main: 'index', }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js', }, }, packageConfigPaths: [ 'npm:@devextreme/*/package.json', 'npm:@devextreme/runtime@3.0.13/inferno/package.json', ], babelOptions: { sourceMaps: false, stage0: true, react: true, }, }; System.config(window.config);
import React from 'react'; import ReactDOM from 'react-dom'; import App from './App.js'; ReactDOM.render(<App />, document.getElementById('app'));
<!DOCTYPE html> <html lang="en"> <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=5.0" /> <link rel="dx-theme" data-theme="generic.light" href="https://cdn3.devexpress.com/jslib/24.1.3/css/dx.light.css" /> <link rel="stylesheet" type="text/css" href="styles.css" /> <script src="https://unpkg.com/core-js@2.6.12/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.tsx"); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"></div> </div> </body> </html>
#gauge { height: 440px; width: 100%; }