Value Indicators API

Documentation

This demo shows how to use the API of the CircularGauge to change its value and subvalue indicators at runtime. To get and set the values of the indicators, the value and subvalues methods are utilized.

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Backend API

<template> <div> <div id="gauge-demo"> <div class="widget-container"> <DxCircularGauge id="gauge" ref="gauge" > <DxScale :start-value="10" :end-value="40" :tick-interval="5" > <DxLabel :customize-text="customizeText" /> </DxScale> <DxTooltip :enabled="true" /> <DxTitle text="Generators Voltage (kV)" > <DxFont :size="28" /> </DxTitle> </DxCircularGauge> </div> <div class="options"> <div class="caption">Options</div> <div class="option"> <span>Main generator</span> <DxNumberBox id="main-generator" v-model:value="mainGeneratorValue" :min="10" :max="40" :width="100" :show-spin-buttons="true" :input-attr="{ 'aria-label': 'Main Generator' }" /> </div> <div class="option"> <span>Additional generator 1</span> <DxNumberBox id="additional-generator-one" v-model:value="additionalGenerator1Value" :min="10" :max="40" :width="100" :show-spin-buttons="true" :input-attr="{ 'aria-label': 'Additional Generator One' }" /> </div> <div class="option"> <span>Additional generator 2</span> <DxNumberBox id="additional-generator-two" v-model:value="additionalGenerator2Value" :min="10" :max="40" :width="100" :show-spin-buttons="true" :input-attr="{ 'aria-label': 'Additional Generator Two' }" /> </div> <div class="option"> <DxButton id="edit" :width="100" text="Apply" @click="updateValues" /> </div> </div> </div> </div> </template> <script> import { DxCircularGauge, DxScale, DxLabel, DxTooltip, DxTitle, DxFont, } from 'devextreme-vue/circular-gauge'; import { DxNumberBox } from 'devextreme-vue/number-box'; import { DxButton } from 'devextreme-vue/button'; export default { components: { DxCircularGauge, DxScale, DxLabel, DxTooltip, DxTitle, DxFont, DxNumberBox, DxButton, }, data() { return { additionalGenerator1Value: 12, additionalGenerator2Value: 23, mainGeneratorValue: 34, }; }, mounted() { this.updateValues(); }, methods: { customizeText({ valueText }) { return `${valueText} kV`; }, updateValues() { this.$refs.gauge.instance.value(this.mainGeneratorValue); this.$refs.gauge.instance.subvalues([ this.additionalGenerator1Value, this.additionalGenerator2Value, ]); }, }, }; </script> <style scoped> .widget-container { margin-right: 320px; } .options { padding: 20px; background-color: rgba(191, 191, 191, 0.15); position: absolute; right: 0; top: 0; bottom: 0; width: 260px; } .caption { font-size: 18px; font-weight: 500; } .option { margin-top: 10px; display: flex; align-items: center; justify-content: space-between; } #edit { margin-left: auto; } </style>

import { createApp } from 'vue'; import App from './App.vue'; createApp(App).mount('#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" /> <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>