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Backend API
x
import React from 'react';import VectorMap, { Layer, Tooltip, Border, Font, ILayerProps, ITooltipProps,} from 'devextreme-react/vector-map';import * as mapsData from 'devextreme-dist/js/vectormap-data/world.js';import { countries } from './data.ts';const bounds = [-180, 85, 180, -60];const customizeLayer: ILayerProps['customize'] = (elements) => { elements.forEach((element) => { const country = countries[element.attribute('name')]; if (country) { element.applySettings({ color: country.color, hoveredColor: '#e0e000', selectedColor: '#008f00', }); } });};const clickHandler = ({ target }) => { if (target && countries[target.attribute('name')]) { target.selected(!target.selected()); }};const customizeTooltip: ITooltipProps['customizeTooltip'] = ({ attribute }) => { const name = attribute('name'); const country = countries[name]; if (country) { return { text: `${name}: ${country.totalArea}M km²`, color: country.color, }; } return null;};export default function App() { return ( <VectorMap id="vector-map" bounds={bounds} onClick={clickHandler} > <Layer dataSource={mapsData.world} customize={customizeLayer}> </Layer> <Tooltip enabled={true} customizeTooltip={customizeTooltip} > <Border visible={true}></Border> <Font color="#fff"></Font> </Tooltip> </VectorMap> );}xxxxxxxxxximport React from 'react';import VectorMap, { Layer, Tooltip, Border, Font,} from 'devextreme-react/vector-map';import * as mapsData from 'devextreme-dist/js/vectormap-data/world.js';import { countries } from './data.js';const bounds = [-180, 85, 180, -60];const customizeLayer = (elements) => { elements.forEach((element) => { const country = countries[element.attribute('name')]; if (country) { element.applySettings({ color: country.color, hoveredColor: '#e0e000', selectedColor: '#008f00', }); } });};const clickHandler = ({ target }) => { if (target && countries[target.attribute('name')]) { target.selected(!target.selected()); }};const customizeTooltip = ({ attribute }) => { const name = attribute('name'); const country = countries[name]; if (country) { return { text: `${name}: ${country.totalArea}M km²`, color: country.color, }; } return null;};export default function App() { return ( <VectorMap id="vector-map" bounds={bounds} onClick={clickHandler} > <Layer dataSource={mapsData.world} customize={customizeLayer} ></Layer> <Tooltip enabled={true} customizeTooltip={customizeTooltip} > <Border visible={true}></Border> <Font color="#fff"></Font> </Tooltip> </VectorMap> );}xxxxxxxxxximport React from 'react';import ReactDOM from 'react-dom';import App from './App.tsx';ReactDOM.render( <App />, document.getElementById('app'),);xxxxxxxxxxexport const countries = { Russia: { totalArea: 17.12, color: '#1E90FF' }, Canada: { totalArea: 9.98, color: '#B8860B' }, China: { totalArea: 9.59, color: '#BDB76B' }, 'United States': { totalArea: 9.52, color: '#FFA07A' }, Brazil: { totalArea: 8.51, color: '#3CB371' }, Australia: { totalArea: 7.69, color: '#D8BFD8' }, India: { totalArea: 3.29, color: '#DB7093' }, Argentina: { totalArea: 2.78, color: '#FFD700' }, Kazakhstan: { totalArea: 2.72, color: '#CD5C5C' }, Algeria: { totalArea: 2.38, color: '#B0C4DE' },};xxxxxxxxxxwindow.exports = window.exports || {};window.config = { transpiler: 'ts', typescriptOptions: { module: 'system', emitDecoratorMetadata: true, experimentalDecorators: true, jsx: 'react', }, meta: { 'react': { 'esModule': true, }, 'typescript': { 'exports': 'ts', }, 'devextreme/time_zone_utils.js': { 'esModule': true, }, 'devextreme/localization.js': { 'esModule': true, }, 'devextreme/viz/palette.js': { 'esModule': true, }, 'devextreme-dist/js/vectormap-data/*': { 'esModule': true, }, 'openai': { 'esModule': true, }, }, paths: { 'npm:': 'https://unpkg.com/', 'bundles:': 'bundles/', 'externals:': 'bundles/externals/', }, defaultExtension: 'js', map: { 'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js', 'typescript': 'npm:typescript@4.2.4/lib/typescript.js', 'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js', 'react': 'npm:react@17.0.2/umd/react.development.js', 'react-dom': 'npm:react-dom@17.0.2/umd/react-dom.development.js', 'prop-types': 'npm:prop-types/prop-types.js', 'devextreme-dist/js/vectormap-data': 'js/vectormap-data', 'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js', 'luxon': 'npm:luxon@3.4.4/build/global/luxon.min.js', 'es6-object-assign': 'npm:es6-object-assign', 'devextreme': 'npm:devextreme@24.2.6/cjs', 'devextreme-react': 'npm:devextreme-react@24.2.6/cjs', 'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.2.15/dist/dx-diagram.js', 'devexpress-gantt': 'npm:devexpress-gantt@4.1.60/dist/dx-gantt.js', '@devextreme/runtime': 'npm:@devextreme/runtime@3.0.12', '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/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', 'devextreme-cldr-data': 'npm:devextreme-cldr-data@1.0.3', // SystemJS plugins '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': { defaultExtension: 'js', }, 'devextreme-react': { main: 'index.js', }, 'devextreme/events/utils': { main: 'index', }, 'devextreme/common/core/events/utils': { main: 'index', }, 'devextreme/localization/messages': { format: 'json', defaultExtension: 'json', }, 'devextreme/events': { main: 'index', }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js', }, }, packageConfigPaths: [ 'npm:@devextreme/*/package.json', 'npm:@devextreme/runtime@3.0.12/inferno/package.json', ], babelOptions: { sourceMaps: false, stage0: true, react: true, },};System.config(window.config);xxxxxxxxxximport React from 'react';import ReactDOM from 'react-dom';import App from './App.js';ReactDOM.render(<App />, document.getElementById('app'));xxxxxxxxxxexport const countries = { Russia: { totalArea: 17.12, color: '#1E90FF' }, Canada: { totalArea: 9.98, color: '#B8860B' }, China: { totalArea: 9.59, color: '#BDB76B' }, 'United States': { totalArea: 9.52, color: '#FFA07A' }, Brazil: { totalArea: 8.51, color: '#3CB371' }, Australia: { totalArea: 7.69, color: '#D8BFD8' }, India: { totalArea: 3.29, color: '#DB7093' }, Argentina: { totalArea: 2.78, color: '#FFD700' }, Kazakhstan: { totalArea: 2.72, color: '#CD5C5C' }, Algeria: { totalArea: 2.38, color: '#B0C4DE' },};xxxxxxxxxx<html lang="en"> <head></head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"></div> </div> </body></html>xxxxxxxxxx#vector-map { height: 440px;}Tooltips for the map areas representing the largest countries are customized as well. Using the tooltip | customizeTooltip callback function, they are colored identical to the areas themselves and display the total area of the country.