React Vector Map - Dynamic Viewport

import React, { useCallback, useRef, useState } from 'react';

import VectorMap, { Layer, ControlBar } from 'devextreme-react/vector-map';

import TextBox from 'devextreme-react/text-box';

import SelectBox from 'devextreme-react/select-box';

import * as mapsData from 'devextreme-dist/js/vectormap-data/world.js';

import Switch from 'devextreme-react/switch';

import {

  viewportCoordinates, centerLabel, zoomLabel, continentLabel,

} from './data.js';

​

const bounds = [-180, 85, 180, -60];

const App = () => {

  const [coordinates, setCoordinates] = useState(viewportCoordinates[0].coordinates);

  const [zoomFactor, setZoomFactor] = useState('1.00');

  const [center, setCenter] = useState('0.000, 46.036');

  const [panVisible, setPanVisible] = useState(true);

  const [zoomVisible, setZoomVisible] = useState(true);

  const mapRef = useRef(null);

  const continentChanged = useCallback(

    ({ value }) => {

      setCoordinates(value);

      mapRef.current.instance().viewport(value);

    },

    [setCoordinates],

  );

  const zoomFactorChanged = useCallback(

    (e) => {

      setZoomFactor(e.zoomFactor.toFixed(2));

    },

    [setZoomFactor],

  );

  const centerChanged = useCallback(

    (e) => {

      const value = `${e.center[0].toFixed(3)}, ${e.center[1].toFixed(3)}`;

      setCenter(value);

    },

    [setCenter],

  );

  const panVisibleChange = useCallback(

    (value) => {

      setPanVisible(value);

    },

    [setPanVisible],

  );

  const zoomVisibleChange = useCallback(

    (value) => {

      setZoomVisible(value);

    },

    [setZoomVisible],

  );

  return (

    <div>

      <VectorMap

        id="vector-map"

        bounds={bounds}

        ref={mapRef}

        onZoomFactorChanged={zoomFactorChanged}

        onCenterChanged={centerChanged}

      >

        <ControlBar

          zoomVisible={zoomVisible}

          panVisible={panVisible}

        />

        <Layer dataSource={mapsData.world} />

      </VectorMap>

​

      <div className="options">

        <div className="caption">Options</div>

        <div className="wrapper-option">

          <div className="column">

            <div className="option">

              <span>Continent</span>

              <SelectBox

                dataSource={viewportCoordinates}

                displayExpr="continent"

                valueExpr="coordinates"

                inputAttr={continentLabel}

                value={coordinates}

                onValueChanged={continentChanged}

                width={210}

              />

            </div>

            <div className="option">

              <span>Zoom factor</span>

              <TextBox

                value={zoomFactor}

                inputAttr={zoomLabel}

                readOnly={true}

                width={210}

              />

            </div>

            <div className="option">

              <span>Center</span>

              <TextBox

                value={center}

                readOnly={true}

                inputAttr={centerLabel}

                width={210}

              />

            </div>

          </div>

          <div className="column">

            <div className="option">

              <span>Pan control</span>

              <Switch

                value={panVisible}

                onValueChange={panVisibleChange}

              />

            </div>

            <div className="option">

              <span>Zoom bar</span>

              <Switch

                value={zoomVisible}

                onValueChange={zoomVisibleChange}

              />

            </div>

          </div>

        </div>

      </div>

    </div>

  );

};

export default App;

​

import React from 'react';

import ReactDOM from 'react-dom';

​

import App from './App.tsx';

​

ReactDOM.render(

  <App />,

  document.getElementById('app'),

);

​

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],

}];

​

export const centerLabel = { 'aria-label': 'Center' };

export const zoomLabel = { 'aria-label': 'Zoom' };

export const continentLabel = { 'aria-label': 'Continent' };

​

window.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);

​

import React from 'react';

import ReactDOM from 'react-dom';

import App from './App.js';

​

ReactDOM.render(<App />, document.getElementById('app'));

​

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, 55.6, -39.0],

  },

  {

    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],

  },

];

export const centerLabel = { 'aria-label': 'Center' };

export const zoomLabel = { 'aria-label': 'Zoom' };

export const continentLabel = { 'aria-label': 'Continent' };

​

<!DOCTYPE html>

<html lang="en">

  <head>↔</head>

​

  <body class="dx-viewport">

    <div class="demo-container">

      <div id="app"></div>

    </div>

  </body>

</html>

​

#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;

}

​