Ranges (React)

Wijmo gauges are composed of Range objects. By default, ranges appear as part of the gauge background. This way you can show 'zones' within the gauge, like 'good', 'average', and 'bad' for example.

If you set the gauge's showRanges property to false, the additional ranges are not shown. Instead, they are used to automatically set the color of the pointer based on the current gauge value.

This example uses React.

import './app.css'; import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; // import * as React from 'react'; import * as ReactDOM from 'react-dom'; // import * as wjGauge from '@grapecity/wijmo.react.gauge'; class App extends React.Component { constructor(props) { super(props); this.state = { value: 75, showRanges: true, radThickness: 0.2, linThickness: 0.4 }; } render() { return (<div className="container-fluid"> <div className="form-check"> <label date-for="showRanges" className="form-check-label">showRanges:</label> <input id="showRanges" type="checkbox" className="form-check-input" checked={this.state.showRanges} onChange={this.setThickness.bind(this)}/> </div> <wjGauge.RadialGauge min={0} max={100} value={this.state.value} isReadOnly={false} step={10} initialized={control => this._radialGaugeValue = control} showRanges={this.state.showRanges} valueChanged={() => this.onValueChanged("RadialGauge")}> <wjGauge.Range wjProperty="pointer" thickness={this.state.radThickness} color="black"></wjGauge.Range> <wjGauge.Range name="low" min={0} max={25} color="rgba(255,0,0,0.4)"></wjGauge.Range> <wjGauge.Range name="med" min={25} max={50} color="rgba(255,255,0,0.4)"></wjGauge.Range> <wjGauge.Range name="high" min={50} max={75} color="rgba(255,125,0,0.4)"></wjGauge.Range> <wjGauge.Range name="top" min={75} max={100} color="rgba(0,255,0,0.4)"></wjGauge.Range> </wjGauge.RadialGauge> <wjGauge.LinearGauge min={0} max={100} value={this.state.value} isReadOnly={false} step={10} initialized={control => this._linearGaugeValue = control} showRanges={this.state.showRanges} valueChanged={() => this.onValueChanged("LinearGauge")}> <wjGauge.Range wjProperty="pointer" thickness={this.state.linThickness} color="black"></wjGauge.Range> <wjGauge.Range name="low" min={0} max={25} color="rgba(255,0,0,0.4)"></wjGauge.Range> <wjGauge.Range name="med" min={25} max={50} color="rgba(255,255,0,0.4)"></wjGauge.Range> <wjGauge.Range name="high" min={50} max={75} color="rgba(255,125,0,0.4)"></wjGauge.Range> <wjGauge.Range name="top" min={75} max={100} color="rgba(0,255,0,0.4)"></wjGauge.Range> </wjGauge.LinearGauge> </div>); } setThickness() { this.setState({ showRanges: !this.state.showRanges, radThickness: !this.state.showRanges ? 0.2 : 1, linThickness: !this.state.showRanges ? 0.4 : 1 }); } onValueChanged(type) { this.setState({ value: (type == 'RadialGauge') ? this._radialGaugeValue.value : this._linearGaugeValue.value }); } } ReactDOM.render(<App />, document.getElementById('app'));
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>Ranges</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.src.js"></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 { margin: 20px auto; width: 50%; max-width: 250px; overflow: hidden; } body { margin-bottom: 24pt; }
(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', '@grapecity/wijmo': 'npm:@grapecity/wijmo/index.js', '@grapecity/wijmo.input': 'npm:@grapecity/wijmo.input/index.js', '@grapecity/wijmo.styles': 'npm:@grapecity/wijmo.styles', '@grapecity/wijmo.cultures': 'npm:@grapecity/wijmo.cultures', '@grapecity/wijmo.chart': 'npm:@grapecity/wijmo.chart/index.js', '@grapecity/wijmo.chart.analytics': 'npm:@grapecity/wijmo.chart.analytics/index.js', '@grapecity/wijmo.chart.animation': 'npm:@grapecity/wijmo.chart.animation/index.js', '@grapecity/wijmo.chart.annotation': 'npm:@grapecity/wijmo.chart.annotation/index.js', '@grapecity/wijmo.chart.finance': 'npm:@grapecity/wijmo.chart.finance/index.js', '@grapecity/wijmo.chart.finance.analytics': 'npm:@grapecity/wijmo.chart.finance.analytics/index.js', '@grapecity/wijmo.chart.hierarchical': 'npm:@grapecity/wijmo.chart.hierarchical/index.js', '@grapecity/wijmo.chart.interaction': 'npm:@grapecity/wijmo.chart.interaction/index.js', '@grapecity/wijmo.chart.radar': 'npm:@grapecity/wijmo.chart.radar/index.js', '@grapecity/wijmo.chart.render': 'npm:@grapecity/wijmo.chart.render/index.js', '@grapecity/wijmo.gauge': 'npm:@grapecity/wijmo.gauge/index.js', '@grapecity/wijmo.grid': 'npm:@grapecity/wijmo.grid/index.js', '@grapecity/wijmo.grid.detail': 'npm:@grapecity/wijmo.grid.detail/index.js', '@grapecity/wijmo.grid.filter': 'npm:@grapecity/wijmo.grid.filter/index.js', '@grapecity/wijmo.grid.search': 'npm:@grapecity/wijmo.grid.search/index.js', '@grapecity/wijmo.grid.grouppanel': 'npm:@grapecity/wijmo.grid.grouppanel/index.js', '@grapecity/wijmo.grid.multirow': 'npm:@grapecity/wijmo.grid.multirow/index.js', '@grapecity/wijmo.grid.transposed': 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"npm:@grapecity/wijmo.react.olap/index.js", "@grapecity/wijmo.react.viewer": "npm:@grapecity/wijmo.react.viewer/index.js", "@grapecity/wijmo.react.nav": "npm:@grapecity/wijmo.react.nav/index.js", "@grapecity/wijmo.react.base": "npm:@grapecity/wijmo.react.base/index.js", 'jszip': 'npm:jszip/dist/jszip.js', 'react': 'npm:react/umd/react.production.min.js', 'react-dom': 'npm:react-dom/umd/react-dom.production.min.js', 'redux': 'npm:redux/dist/redux.min.js', 'react-redux': 'npm:react-redux/dist/react-redux.min.js', 'bootstrap.css': 'npm:bootstrap/dist/css/bootstrap.min.css', 'css': 'npm:systemjs-plugin-css/css.js', 'plugin-babel': 'npm:systemjs-plugin-babel/plugin-babel.js', 'systemjs-babel-build':'npm:systemjs-plugin-babel/systemjs-babel-browser.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);