Text Values (React)

The showText property is used to show the min/max/value properties as text on the gauge. Use the format property to apply numeric formatting, or use the getText callback function to completely customize the display values.

This example uses React.

import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import ReactDOM from 'react-dom/client'; import React, { useRef, useState } from 'react'; import useEvent from 'react-use-event-hook'; import * as wjInput from '@mescius/wijmo.react.input'; import * as wjGauge from '@mescius/wijmo.react.gauge'; import './app.css'; function App() { const [customText, setCustomText] = useState(false); const [showText, setShowText] = useState('All'); const [format, setFormat] = useState('n0'); const [value, setValue] = useState(80); const showTextItemSource = useRef(['All', 'None', 'Value', 'MinMax']); const formatItemSource = useRef(['n0', 'n2', 'c0', 'c2']); const getTextCallback = useEvent((gauge, part, value, text) => { switch (part) { case 'value': if (value <= 10) return 'Empty!'; if (value <= 25) return 'Low...'; if (value <= 95) return 'Good'; return 'Full'; case 'min': return 'empty'; case 'max': return 'full'; } return text; }); const handleShowTextChange = useEvent((sender) => { if (sender.text) { setShowText(sender.text); } }); const handleFormatChange = useEvent((sender) => { if (sender.text) { setFormat(sender.text); } }); const handleCustomTextChange = () => { setCustomText(!customText); }; const handleValueChange = useEvent((sender) => { setValue(sender.value); }); return (<div className="container-fluid"> <div className="row"> <div className="col-xs-6"> <div className="form-group"> <label htmlFor="showText">Show Text:</label> <wjInput.ComboBox id="showText" itemsSource={showTextItemSource.current} text={showText} selectedIndexChanged={handleShowTextChange}/> </div> <div className="form-group"> <label htmlFor="format">Format:</label> <wjInput.ComboBox id="format" itemsSource={formatItemSource.current} text={format} selectedIndexChanged={handleFormatChange}/> </div> <div className="form-check"> <label htmlFor="customText" className="form-check-label"> Custom Text: </label> <input id="customText" type="checkbox" className="form-check-input" checked={customText} onChange={handleCustomTextChange}/> </div> </div> <div className="col-xs-6"> <wjGauge.RadialGauge isReadOnly={false} hasShadow={false} showText={showText} startAngle={-30} getText={customText ? getTextCallback : null} sweepAngle={240} value={value} showRanges={false} format={format} valueChanged={handleValueChange}> <wjGauge.Range min={0} max={25} color="red"/> <wjGauge.Range min={25} max={50} color="orange"/> <wjGauge.Range min={50} max={100} color="green"/> </wjGauge.RadialGauge> </div> </div> </div>); } const container = document.getElementById('app'); if (container) { const root = ReactDOM.createRoot(container); root.render(<App />); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>Text Values</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.40/system.src.js" integrity="sha512-G6mEj6h18+m3MvzdviSDfPle/TfH0//cXcB33AKlNR/Rha0yQsKefDZKRTkIZos97HEGq2JMV1RT5ybMoQ3WsQ==" crossorigin="anonymous"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div id="app"></div> </body> </html>
.container-fluid .wj-gauge { height: 150px; margin: 20px auto; padding: 12px; background: rgba(0, 0, 0, .02); box-shadow: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23); } .container-fluid .wj-gauge .wj-ticks { stroke: white; stroke-width: 2px; } label { width: 120px; text-align: right; margin-right: 3px; } .wj-dropdown, .wj-inputnumber { width: 120px; }
(function (global) { System.config({ transpiler: 'plugin-babel', babelOptions: { es2015: true, react: true }, meta: { '*.css': { loader: 'css' } }, paths: { // paths serve as alias 'npm:': 'node_modules/' }, // map tells the System loader where to look for things map: { 'jszip': 'npm:jszip/dist/jszip.js', '@mescius/wijmo': 'npm:@mescius/wijmo/index.js', '@mescius/wijmo.input': 'npm:@mescius/wijmo.input/index.js', '@mescius/wijmo.styles': 'npm:@mescius/wijmo.styles', '@mescius/wijmo.cultures': 'npm:@mescius/wijmo.cultures', '@mescius/wijmo.chart': 'npm:@mescius/wijmo.chart/index.js', '@mescius/wijmo.chart.analytics': 'npm:@mescius/wijmo.chart.analytics/index.js', '@mescius/wijmo.chart.animation': 'npm:@mescius/wijmo.chart.animation/index.js', '@mescius/wijmo.chart.annotation': 'npm:@mescius/wijmo.chart.annotation/index.js', '@mescius/wijmo.chart.finance': 'npm:@mescius/wijmo.chart.finance/index.js', '@mescius/wijmo.chart.finance.analytics': 'npm:@mescius/wijmo.chart.finance.analytics/index.js', '@mescius/wijmo.chart.hierarchical': 'npm:@mescius/wijmo.chart.hierarchical/index.js', '@mescius/wijmo.chart.interaction': 'npm:@mescius/wijmo.chart.interaction/index.js', '@mescius/wijmo.chart.radar': 'npm:@mescius/wijmo.chart.radar/index.js', '@mescius/wijmo.chart.render': 'npm:@mescius/wijmo.chart.render/index.js', '@mescius/wijmo.chart.webgl': 'npm:@mescius/wijmo.chart.webgl/index.js', '@mescius/wijmo.chart.map': 'npm:@mescius/wijmo.chart.map/index.js', '@mescius/wijmo.gauge': 'npm:@mescius/wijmo.gauge/index.js', '@mescius/wijmo.grid': 'npm:@mescius/wijmo.grid/index.js', '@mescius/wijmo.grid.detail': 'npm:@mescius/wijmo.grid.detail/index.js', '@mescius/wijmo.grid.filter': 'npm:@mescius/wijmo.grid.filter/index.js', '@mescius/wijmo.grid.search': 'npm:@mescius/wijmo.grid.search/index.js', '@mescius/wijmo.grid.grouppanel': 'npm:@mescius/wijmo.grid.grouppanel/index.js', '@mescius/wijmo.grid.multirow': 'npm:@mescius/wijmo.grid.multirow/index.js', '@mescius/wijmo.grid.transposed': 'npm:@mescius/wijmo.grid.transposed/index.js', '@mescius/wijmo.grid.transposedmultirow': 'npm:@mescius/wijmo.grid.transposedmultirow/index.js', '@mescius/wijmo.grid.pdf': 'npm:@mescius/wijmo.grid.pdf/index.js', '@mescius/wijmo.grid.sheet': 'npm:@mescius/wijmo.grid.sheet/index.js', '@mescius/wijmo.grid.xlsx': 'npm:@mescius/wijmo.grid.xlsx/index.js', '@mescius/wijmo.grid.selector': 'npm:@mescius/wijmo.grid.selector/index.js', '@mescius/wijmo.grid.cellmaker': 'npm:@mescius/wijmo.grid.cellmaker/index.js', '@mescius/wijmo.grid.immutable': 'npm:@mescius/wijmo.grid.immutable/index.js', '@mescius/wijmo.touch': 'npm:@mescius/wijmo.touch/index.js', '@mescius/wijmo.cloud': 'npm:@mescius/wijmo.cloud/index.js', '@mescius/wijmo.nav': 'npm:@mescius/wijmo.nav/index.js', '@mescius/wijmo.odata': 'npm:@mescius/wijmo.odata/index.js', '@mescius/wijmo.olap': 'npm:@mescius/wijmo.olap/index.js', '@mescius/wijmo.rest': 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"npm:react-use-event-hook/dist/esm/useEvent.js", }, // packages tells the System loader how to load when no filename and/or no extension packages: { src: { defaultExtension: 'jsx' }, "node_modules": { defaultExtension: 'js' }, } }); })(this);