Vue Vector Map - Dynamic Viewport

This demo illustrates how to change the map's viewport. Use the drop-down menu under the map to choose a continent and change the visible area so that the chosen continent is displayed optimally.

To implement this functionality, call the viewport(viewportCoordinates) method every time the drop-down box value changes. You can also implement the onCenterChanged and onZoomFactorChanged functions to display the map center's coordinates and the current zoom factor in text boxes under the map.

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Backend API

<template> <div> <DxVectorMap id="vector-map" ref="map" :bounds="bounds" @center-changed="centerChanged" @zoom-factor-changed="zoomFactorChanged" > <DxLayer :data-source="world" /> <DxControlBar v-model:pan-visible="panVisible" v-model:zoom-visible="zoomVisible" /> </DxVectorMap> <div class="options"> <div class="caption">Options</div> <div className="wrapper-option"> <div className="column"> <div class="option"> <span>Continent </span> <DxSelectBox :data-source="viewportCoordinates" :value="viewportCoordinates[0].coordinates" :on-value-changed="continentChanged" :input-attr="{ 'aria-label': 'Continent' }" value-expr="coordinates" display-expr="continent" :width="210" /> </div> <div class="option"> <span>Zoom factor </span> <DxTextBox :value="currentZoomFactor" :input-attr="{ 'aria-label': 'Zoom' }" :read-only="true" :width="210" /> </div> <div class="option"> <span>Center </span> <DxTextBox :value="currentCenter" :input-attr="{ 'aria-label': 'Center' }" :read-only="true" :width="210" /> </div> </div> <div className="column"> <div class="option"> <span>Pan control</span> <DxSwitch v-model:value="panVisible"/> </div> <div class="option"> <span>Zoom bar</span> <DxSwitch v-model:value="zoomVisible"/> </div> </div> </div> </div> </div> </template> <script setup lang="ts"> import { ref } from 'vue'; import { DxVectorMap, DxLayer, DxControlBar, } from 'devextreme-vue/vector-map'; import DxTextBox from 'devextreme-vue/text-box'; import DxSelectBox, { type DxSelectBoxTypes } from 'devextreme-vue/select-box'; import DxSwitch from 'devextreme-vue/switch'; import * as mapsData from 'devextreme-dist/js/vectormap-data/world.js'; import { viewportCoordinates } from './data.ts'; const world = mapsData.world; const bounds = [-180, 85, 180, -60]; const currentCenter = ref('0.000, 46.036'); const currentZoomFactor = ref('1.00'); const panVisible = ref(true); const zoomVisible = ref(true); const map = ref(); function continentChanged({ value }: DxSelectBoxTypes.ValueChangedEvent) { map.value.instance.viewport(value); } function centerChanged({ center }) { currentCenter.value = `${center[0].toFixed(3)}, ${center[1].toFixed(3)}`; } function zoomFactorChanged({ zoomFactor }) { currentZoomFactor.value = zoomFactor.toFixed(2); } </script> <style> #vector-map { height: 420px; } .options { padding: 20px; background-color: rgba(191, 191, 191, 0.15); margin-top: 20px; } .wrapper-option { display: flex; gap: 24px; padding-top: 16px; } .column { display: flex; gap: 10px; flex-direction: column; } .option { display: flex; align-items: center; min-height: 34px; } .caption { font-size: 18px; font-weight: 500; } .option > span { width: 140px; } </style>

export const viewportCoordinates = [{ continent: 'all', coordinates: 'null', }, { continent: 'NorthAmerica', coordinates: [-180, 84.52, -22.11, -1.57], }, { continent: 'SouthAmerica', coordinates: [-112.47, 14.26, -27.52, -57.44], }, { continent: 'Africa', coordinates: [-29.34, 39.09, 55.60, -39.00], }, { continent: 'Europe', coordinates: [-2.35, 70.91, 61.35, 35.84], }, { continent: 'Asia', coordinates: [27.62, 83.11, 180, -19.36], }, { continent: 'Australia', coordinates: [104.87, -6.61, 149.98, -45.87], }];

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="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.2.7/css/dx.light.css" /> <script src="https://cdn.jsdelivr.net/npm/typescript@5.4.5/lib/typescript.js"></script> <script type="module"> import * as vueCompilerSFC from "https://cdn.jsdelivr.net/npm/@vue/compiler-sfc@3.4.27/dist/compiler-sfc.esm-browser.js"; window.vueCompilerSFC = vueCompilerSFC; </script> <script src="https://cdn.jsdelivr.net/npm/core-js@2.6.12/client/shim.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/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>

To show or hide the control bar, enable or disable the panVisible and zoomVisible properties. You can toggle switches under the map to see how these settings affect the control bar.