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Update Bar Gauge Data at Runtime

This demo illustrates how to bind an array of values to the BarGauge. Since an array can not be bound to a field as a regular value, it is bound as a computed one.

Backend API
<template> <div> <div class="long-title"> <h3>Colors Representation via Basic Colors</h3> </div> <div id="gauge-demo"> <DxBarGauge id="gauge" :start-value="0" :end-value="255" :palette="palette" :values="values" > <DxLabel :visible="false" /> </DxBarGauge> <div class="action-container"> <DxSelectBox :width="150" :input-attr="{ 'aria-label': 'Color' }" :data-source="colors" v-model:value="value" display-expr="name" value-expr="code" /> <div :style="{ 'background-color': value }" class="color-box" /> </div> </div> </div> </template> <script setup lang="ts"> import { computed, ref } from 'vue'; import { DxBarGauge, DxLabel } from 'devextreme-vue/bar-gauge'; import { DxSelectBox } from 'devextreme-vue/select-box'; import { colors } from './data.ts'; const palette = ['#ff0000', '#00ff00', '#0000ff']; const value = ref(colors[0].code); const values = computed(() => getBasicColors(value.value)); function getBasicColors(selectValue) { const code = Number(`0x${selectValue.slice(1)}`); return [ (code >> 16) & 0xff, (code >> 8) & 0xff, code & 0xff, ]; } </script> <style scoped> #gauge-demo { height: 440px; width: 100%; } #gauge { width: 80%; height: 100%; margin-top: 20px; float: left; } .action-container { width: 20%; text-align: left; margin-top: 20px; float: left; } .color-box { width: 40px; height: 40px; margin-top: 20px; } .long-title h3 { font-weight: 200; font-size: 28px; text-align: center; margin-bottom: 20px; } </style>
window.exports = window.exports || {}; window.config = { transpiler: 'plugin-babel', meta: { '*.vue': { loader: 'vue-loader', }, '*.ts': { loader: 'demo-ts-loader', }, '*.svg': { loader: 'svg-loader', }, 'devextreme/time_zone_utils.js': { 'esModule': true, }, 'devextreme/localization.js': { 'esModule': true, }, 'devextreme/viz/palette.js': { 'esModule': true, }, }, paths: { 'root:': '../../../../', 'npm:': 'https://unpkg.com/', }, map: { 'vue': 'npm:vue@3.2.47/dist/vue.esm-browser.js', 'vue-loader': 'npm:dx-systemjs-vue-browser@1.1.1/index.js', 'demo-ts-loader': 'root:utils/demo-ts-loader.js', 'svg-loader': 'root:utils/svg-loader.js', 'mitt': 'npm:mitt/dist/mitt.umd.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@24.1.3/cjs', 'devextreme-vue': 'npm:devextreme-vue@24.1.3/cjs', 'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js', 'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.2.8/dist/dx-diagram.js', 'devexpress-gantt': 'npm:devexpress-gantt@4.1.56/dist/dx-gantt.js', '@devextreme/runtime': 'npm:@devextreme/runtime@3.0.13', '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', '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-vue': { main: 'index.js', }, 'devextreme': { defaultExtension: '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@3.0.13/inferno/package.json', ], babelOptions: { sourceMaps: false, stage0: true, }, }; System.config(window.config);
export const colors = [{ name: 'Amaranth', code: '#e52b50', }, { name: 'Amethyst', code: '#9966cc', }, { name: 'Ash grey', code: '#b2beb5', }, { name: 'Barn red', code: '#7c0a02', }, { name: 'Imperial', code: '#602f6b', }, { name: 'Lemon lime', code: '#e3ff00', }, { name: 'Mountain Meadow', code: '#30ba8f', }, { name: 'Outer Space', code: '#414a4c', }, { name: 'Persian plum', code: '#701c1c', }, { name: 'Seal brown', code: '#321414', }, { name: 'Twilight lavender', code: '#8a496b', }, { name: 'Umber', code: '#635147', }];
import { createApp } from 'vue'; import App from './App.vue'; createApp(App).mount('#app');
<!DOCTYPE html> <html lang="en"> <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=5.0" /> <link rel="dx-theme" data-theme="generic.light" href="https://cdn3.devexpress.com/jslib/24.1.3/css/dx.light.css" /> <script src="https://unpkg.com/typescript@4.9.5/lib/typescript.js"></script> <script type="module"> import * as vueCompilerSFC from "https://unpkg.com/@vue/compiler-sfc@3.4.16/dist/compiler-sfc.esm-browser.js"; window.vueCompilerSFC = vueCompilerSFC; </script> <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.ts"); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"> </div> </div> </body> </html>