Update Linear Gauge Data at Runtime
Documentation
This demo illustrates data binding in the LinearGauge component. The bound data changes when a user selects a new location in the City drop-down menu.
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import React from 'react';
import {
LinearGauge, Title, Font, Geometry, Scale, RangeContainer, Range, ValueIndicator, Label,
} from 'devextreme-react/linear-gauge';
import { SelectBox } from 'devextreme-react/select-box';
import { cities, cityLabel } from './data.js';
const customTicks = [900, 1000, 1020, 1100];
const pressureLabelFormat = {
type: 'decimal',
};
class App extends React.Component {
constructor(props) {
super(props);
this.state = {
selectBoxValue: cities[0].data,
temperature: cities[0].data.temperature,
humidity: cities[0].data.humidity,
pressure: cities[0].data.pressure,
};
this.onSelectionChanged = (e) => {
const weatherData = e.selectedItem.data;
this.setState({
selectBoxValue: weatherData,
temperature: weatherData.temperature,
humidity: weatherData.humidity,
pressure: weatherData.pressure,
});
};
}
render() {
const temperatureGaugeStartValue = -40;
return (
<div>
<div className="long-title">
<h3>Weather Indicators</h3>
</div>
<div id="gauge-demo">
<LinearGauge
className="gauge-element"
value={this.state.temperature}
>
<Title text="Temperature (°C)">
<Font size={16} />
</Title>
<Geometry orientation="vertical" />
<Scale startValue={temperatureGaugeStartValue} endValue={40} tickInterval={40} />
<RangeContainer backgroundColor="none">
<Range startValue={temperatureGaugeStartValue} endValue={0} color="#679EC5" />
<Range startValue={0} endValue={40} />
</RangeContainer>
</LinearGauge>
<LinearGauge
className="gauge-element"
value={this.state.humidity}
>
<Title text="Humidity (%)">
<Font size={16} />
</Title>
<Geometry orientation="vertical" />
<Scale startValue={0} endValue={100} tickInterval={10} />
<RangeContainer backgroundColor="#CACACA" />
<ValueIndicator type="rhombus" color="#A4DDED" />
</LinearGauge>
<LinearGauge
className="gauge-element"
value={this.state.pressure}
>
<Title text="Barometric Pressure (mb)">
<Font size={16} />
</Title>
<Geometry orientation="vertical" />
<Scale startValue={900} endValue={1100} customTicks={customTicks}>
<Label format={pressureLabelFormat} />
</Scale>
<RangeContainer>
<Range startValue={900} endValue={1000} color="#679EC5" />
<Range startValue={1000} endValue={1020} color="#A6C567" />
<Range startValue={1020} endValue={1100} color="#E18E92" />
</RangeContainer>
<ValueIndicator type="circle" color="#E3A857" />
</LinearGauge>
</div>
<SelectBox
dataSource={cities}
valueExpr="data"
inputAttr={cityLabel}
value={this.state.selectBoxValue}
displayExpr="name"
onSelectionChanged={this.onSelectionChanged}
/>
</div>
);
}
}
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="dx-theme" data-theme="generic.light" href="https://cdn3.devexpress.com/jslib/23.1.5/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.js");
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"></div>
</div>
</body>
</html>
#gauge-demo {
width: 90%;
margin: 0 auto;
}
#gauge-demo .gauge-element {
height: 400px;
width: 33%;
float: left;
}
.dx-selectbox {
margin: 10px auto 0;
width: 200px;
}
#gauge-demo::after {
content: ".";
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}
.long-title h3 {
font-weight: 200;
font-size: 28px;
text-align: center;
margin-bottom: 20px;
}
export const cities = [{
name: 'London',
id: '1',
data: {
temperature: 10,
humidity: 81,
pressure: 1002.1,
},
}, {
name: 'Berlin',
id: '2',
data: {
temperature: 14,
humidity: 58,
pressure: 1008.5,
},
}, {
name: 'New York',
id: '3',
data: {
temperature: 3,
humidity: 89,
pressure: 1016.2,
},
}, {
name: 'Moscow',
id: '4',
data: {
temperature: 2,
humidity: 51,
pressure: 1016.5,
},
}, {
name: 'Bangkok',
id: '5',
data: {
temperature: 37,
humidity: 39,
pressure: 1007.0,
},
}];
export const cityLabel = { 'aria-label': 'City' };
window.config = {
transpiler: 'plugin-babel',
meta: {
'devextreme/localization.js': {
'esModule': true,
},
},
paths: {
'npm:': 'https://unpkg.com/',
},
defaultExtension: 'js',
map: {
'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@23.1.5/cjs',
'devextreme-react': 'npm:devextreme-react@23.1.5',
'jszip': 'npm:jszip@3.7.1/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@1.6.2/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.1/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.48/dist/dx-gantt.js',
'@devextreme/runtime': 'npm:@devextreme/runtime@3.0.11',
'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',
// 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@2.8.4/standalone.js',
'prettier/parser-html': 'npm:prettier@2.8.4/parser-html.js',
},
packages: {
'devextreme': {
defaultExtension: 'js',
},
'devextreme-react': {
main: 'index.js',
},
'devextreme/events/utils': {
main: 'index',
},
'devextreme/events': {
main: 'index',
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js',
},
},
packageConfigPaths: [
'npm:@devextreme/*/package.json',
'npm:@devextreme/runtime@3.0.11/inferno/package.json',
],
babelOptions: {
sourceMaps: false,
stage0: true,
react: true,
},
};
System.config(window.config);