React Gauges - Update Linear Gauge Data at Runtime

import React, { useCallback, useState } 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 temperatureGaugeStartValue = -40;

const pressureLabelFormat = {

  type: 'decimal',

};

function App() {

  const [selectBoxValue, setSelectBoxValue] = useState(cities[0].data);

  const [temperature, setTemperature] = useState(cities[0].data.temperature);

  const [humidity, setHumidity] = useState(cities[0].data.humidity);

  const [pressure, setPressure] = useState(cities[0].data.pressure);

  const onSelectionChanged = useCallback(

    (e) => {

      const weatherData = e.selectedItem.data;

      setSelectBoxValue(weatherData);

      setTemperature(weatherData.temperature);

      setHumidity(weatherData.humidity);

      setPressure(weatherData.pressure);

    },

    [setSelectBoxValue, setTemperature, setHumidity, setPressure],

  );

  return (

    <div>

      <div className="long-title">

        <h3>Weather Indicators</h3>

      </div>

      <div id="gauge-demo">

        <LinearGauge

          className="gauge-element"

          value={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={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={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={selectBoxValue}

        displayExpr="name"

        onSelectionChanged={onSelectionChanged}

      />

    </div>

  );

}

export default App;

​

import React from 'react';

import ReactDOM from 'react-dom';

​

import App from './App.tsx';

​

ReactDOM.render(

  <App />,

  document.getElementById('app'),

);

​

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.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,

    },

    'openai': {

      'esModule': true,

    },

  },

  paths: {

    'npm:': 'https://unpkg.com/',

    'bundles:': 'bundles/',

    'externals:': 'bundles/externals/',

  },

  defaultExtension: 'js',

  map: {

    'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js',

    'typescript': 'npm:typescript@4.2.4/lib/typescript.js',

    'jszip': 'npm:jszip@3.10.1/dist/jszip.min.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/prop-types.js',

    'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',

    'luxon': 'npm:luxon@3.4.4/build/global/luxon.min.js',

    'es6-object-assign': 'npm:es6-object-assign',

    'devextreme': 'npm:devextreme@24.2.6/cjs',

    'devextreme-react': 'npm:devextreme-react@24.2.6/cjs',

    'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js',

    'devexpress-diagram': 'npm:devexpress-diagram@2.2.15/dist/dx-diagram.js',

    'devexpress-gantt': 'npm:devexpress-gantt@4.1.60/dist/dx-gantt.js',

    '@devextreme/runtime': 'npm:@devextreme/runtime@3.0.12',

    '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/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/common/core/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@3.0.12/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'));

​

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' };

​

<!DOCTYPE html>

<html lang="en">

  <head>↔</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;

}

​