import React from 'react';
import TreeMap, { Colorizer, Tooltip } from 'devextreme-react/tree-map';
import SelectBox from 'devextreme-react/select-box';
import { populationByAge } from './data.js';
const algorithms = ['sliceAndDice', 'squarified', 'strip', 'custom'];
class App extends React.Component {
constructor(props) {
super(props);
this.state = {
selectedAlgorithm: algorithms[2],
currentAlgorithm: getCurrentAlgorithm(algorithms[2])
};
this.setAlgorithm = this.setAlgorithm.bind(this);
}
render() {
return (
<React.Fragment>
<TreeMap
id="treemap"
dataSource={populationByAge}
layoutAlgorithm={this.state.currentAlgorithm}
title="Population by Age Groups"
>
<Colorizer
colorizeGroups={true}
type="discrete"
/>
<Tooltip
enabled={true}
customizeTooltip={customizeTooltip}
format="thousands"
/>
</TreeMap>
<div className="options">
<div className="caption">Options</div>
<div className="option">
<span>Tiling Algorithm </span>
<SelectBox
dataSource={algorithms}
width={200}
value={this.state.selectedAlgorithm}
onValueChanged={this.setAlgorithm}
/>
</div>
</div>
</React.Fragment>
);
}
setAlgorithm(data) {
this.setState({
selectedAlgorithm: data.value,
currentAlgorithm: getCurrentAlgorithm(data.value)
});
}
}
function customAlgorithm(arg) {
const totalRect = arg.rect.slice();
let totalSum = arg.sum;
let side = 0;
arg.items.forEach(item => {
const size = Math.round((totalRect[side + 2] - totalRect[side]) * item.value / totalSum);
const rect = totalRect.slice();
totalSum -= item.value;
rect[side + 2] = totalRect[side] = totalRect[side] + size;
item.rect = rect;
side = 1 - side;
});
}
function getCurrentAlgorithm(selectedAlgorithm) {
let currentAlgorithm = selectedAlgorithm.toLowerCase();
if(currentAlgorithm === 'custom') {
currentAlgorithm = customAlgorithm;
}
return currentAlgorithm;
}
function customizeTooltip(arg) {
const data = arg.node.data;
const parentData = arg.node.getParent().data;
return {
text: arg.node.isLeaf()
? `<span class='country'>${parentData.name}</span><br />${data.name}<br />${arg.valueText}(${(100 * data.value / parentData.total).toFixed(1)}%)`
: `<span class='country'>${data.name}</span>`
};
}
export default App;
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(
<App />,
document.getElementById('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="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.6/css/dx.common.css" />
<link rel="dx-theme" data-theme="generic.light" href="https://cdn3.devexpress.com/jslib/20.2.6/css/dx.light.css" />
<link rel="stylesheet" type ="text/css" href="styles.css" />
<script src="https://unpkg.com/core-js@2.4.1/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>
#treemap {
height: 460px;
}
.country {
font-weight: 500;
}
.options {
padding: 20px;
background-color: rgba(191, 191, 191, 0.15);
margin-top: 20px;
}
.option {
margin-top: 10px;
}
.caption {
font-size: 18px;
font-weight: 500;
}
.option > span {
margin-right: 10px;
}
.option > .dx-widget {
display: inline-block;
vertical-align: middle;
}
export const populationByAge = [{
'name': 'Brazil',
'total': 200050486,
'items': [{
'name': 'Age 0-14',
'value': 48058462
}, {
'name': 'Age 15-44',
'value': 96036995
}, {
'name': 'Age 45-64',
'value': 40715296
}, {
'name': 'Age 65+',
'value': 15239733
}]
}, {
'name': 'Japan',
'total': 126345237,
'items': [{
'name': 'Age 0-14',
'value': 16593766
}, {
'name': 'Age 15-44',
'value': 45455276
}, {
'name': 'Age 45-64',
'value': 32845790
}, {
'name': 'Age 65+',
'value': 31450405
}]
}, {
'name': 'United States',
'total': 318497627,
'items': [{
'name': 'Age 0-14',
'value': 63968935
}, {
'name': 'Age 15-44',
'value': 127217843
}, {
'name': 'Age 45-64',
'value': 83145484
}, {
'name': 'Age 65+',
'value': 44165365
}]
}];
System.config({
transpiler: 'plugin-babel',
meta: {
'devextreme/localization.js': {
"esModule": true
},
},
paths: {
'npm:': 'https://unpkg.com/'
},
defaultExtension: 'js',
map: {
'react': 'npm:react@16.14.0/umd/react.development.js',
'react-dom': 'npm:react-dom@16.14.0/umd/react-dom.development.js',
'prop-types': 'npm:prop-types@15.7.2/prop-types.js',
'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.26.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@20.2.6',
'devextreme-react': 'npm:devextreme-react@20.2.6',
'jszip': 'npm:jszip@3.6.0/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@0.10.3/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.0.18/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@2.0.24/dist/dx-gantt.js',
'preact': 'npm:preact@10.5.13/dist/preact.js',
'preact/hooks': 'npm:preact@10.5.13/hooks/dist/hooks.js',
// 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'
},
packages: {
'devextreme': {
defaultExtension: 'js'
},
'devextreme-react': {
main: 'index.js'
},
'devextreme/events/utils': {
main: 'index'
},
'devextreme/events': {
main: 'index'
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js'
}
},
babelOptions: {
sourceMaps: false,
stage0: true,
react: true
}
});