<template>
<div>
<DxTreeMap
id="treemap"
:data-source="populationByAge"
:layout-algorithm="currentAlgorithm"
title="Population by Age Groups"
>
<DxColorizer
:colorize-groups="true"
type="discrete"
/>
<DxTooltip
:enabled="true"
:customize-tooltip="customizeTooltip"
format="thousands"
/>
</DxTreeMap>
<div class="options">
<div class="caption">Options</div>
<div class="option">
<span>Tiling Algorithm</span>
<DxSelectBox
:data-source="algorithms"
:width="200"
v-model:value="selectedAlgorithm"
/>
</div>
</div>
</div>
</template>
<script>
import DxTreeMap,
{
DxColorizer,
DxTooltip
} from 'devextreme-vue/tree-map';
import { DxSelectBox } from 'devextreme-vue/select-box';
import { populationByAge } from './data.js';
export default {
components: {
DxTreeMap,
DxColorizer,
DxTooltip,
DxSelectBox
},
data() {
const algorithms = ['sliceAndDice', 'squarified', 'strip', 'custom'];
return {
populationByAge,
algorithms,
selectedAlgorithm: algorithms[2]
};
},
computed: {
currentAlgorithm() {
let currentAlgorithm = this.selectedAlgorithm;
if(currentAlgorithm === 'custom') {
currentAlgorithm = this.customAlgorithm;
}
return currentAlgorithm;
}
},
methods: {
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>`
};
},
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;
});
}
}
};
</script>
<style scoped>
#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: 14px;
}
.option > .dx-widget {
display: inline-block;
vertical-align: middle;
}
</style>
import { createApp } from 'vue';
import App from './App.vue';
createApp(App).mount('#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" />
<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>
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: {
'*.vue': {
loader: 'vue-loader'
},
'devextreme/localization.js': {
"esModule": true
},
},
paths: {
'npm:': 'https://unpkg.com/'
},
map: {
'vue': 'npm:vue@3.0.0/dist/vue.esm-browser.js',
'vue-loader': 'npm:dx-systemjs-vue-browser@1.0.15/index.js',
'mitt': 'npm:mitt/dist/mitt.umd.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-vue': 'npm:devextreme-vue@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',
'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-vue': {
main: 'index.js'
},
'devextreme': {
defaultExtension: 'js'
},
'devextreme/events/utils': {
main: 'index'
},
'devextreme/events': {
main: 'index'
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js'
}
},
babelOptions: {
sourceMaps: false,
stage0: true
}
});