Tooltips: HTML Markup Support
To set the tooltip's content, specify the contentTemplate. Inside the template, you can identify the chart series point for which the tooltip is displayed and thus display information related to that point.
en.wikipedia.org
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<dx-pie-chart
id="pie-chart"
[dataSource]="populationData"
palette="bright"
title="Top 10 Most Populated States in US">
<dxi-series
argumentField="name"
valueField="population">
</dxi-series>
<dxo-tooltip
[enabled]="true"
contentTemplate="content">
</dxo-tooltip>
<dxo-export [enabled]="true"></dxo-export>
<div *dxTemplate="let info of 'content'" class='state-tooltip'>
<img src='{{getImagePath(info.point)}}' /><h4>{{info.argument}}</h4>
<div>
<span class='caption'>Capital</span>: {{info.point.data.capital}}
</div>
<div>
<span class='caption'>Population</span>: {{info.value | number:"3.0-0"}} people
</div>
<div>
<span class='caption'>Area</span>: {{info.point.data.area | number:"3.0-0"}} km<sup>2</sup> ({{0.3861 * info.point.data.area | number:"3.0-0"}} mi<sup>2</sup>)
</div>
</div>
</dx-pie-chart>
import { NgModule, Component, enableProdMode } from '@angular/core';
import { DecimalPipe } from '@angular/common';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { DxPieChartModule } from 'devextreme-angular';
import { Service, State } from './app.service';
if(!/localhost/.test(document.location.host)) {
enableProdMode();
}
@Component({
selector: 'demo-app',
providers: [Service],
templateUrl: 'app/app.component.html',
styleUrls: ['app/app.component.css']
})
export class AppComponent {
populationData: State[];
pipe: any = new DecimalPipe("en-US");
constructor(service: Service) {
this.populationData = service.getPopulationData();
}
getImagePath(point) {
return `../../../../images/flags/${point.data.name.replace(/\s/, "").toLowerCase()}.gif`;
}
}
@NgModule({
imports: [
BrowserModule,
DxPieChartModule
],
declarations: [AppComponent],
bootstrap: [AppComponent]
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #pie-chart {
height: 440px;
}
::ng-deep .state-tooltip {
height: 90px;
}
::ng-deep .state-tooltip > img {
width: 60px;
height: 40px;
display: block;
margin: 0 5px 0 0;
float: left;
}
::ng-deep .state-tooltip > h4 {
line-height: 40px;
font-size: 14px;
margin-bottom: 5px;
}
::ng-deep .state-tooltip .caption {
font-weight: 500;
}
::ng-deep .state-tooltip sup {
font-size: 0.8em;
vertical-align: super;
line-height: 0;
}
import { Injectable } from '@angular/core';
export interface State {
name: string;
population: number;
capital: string;
area: number;
}
let populationData: State[] = [{
name: "California",
population: 38802500,
capital: "Sacramento",
area: 423970
}, {
name: "Texas",
population: 26956958,
capital: "Austin",
area: 695662
}, {
name: "Florida",
population: 19893297,
capital: "Tallahassee",
area: 170312
}, {
name: "New York",
population: 19746227,
capital: "Albany",
area: 141297
}, {
name: "Illinois",
population: 12880580,
capital: "Springfield",
area: 149995
}, {
name: "Pennsylvania",
population: 12787209,
capital: "Harrisburg",
area: 119280
}, {
name: "Ohio",
population: 11594163,
capital: "Columbus",
area: 116098
}, {
name: "Georgia",
population: 10097343,
capital: "Atlanta",
area: 153910
}, {
name: "North Carolina",
population: 9943964,
capital: "Raleigh",
area: 139391
}, {
name: "Michigan",
population: 9909877,
capital: "Lansing",
area: 250487
}];
@Injectable()
export class Service {
getPopulationData(): State[] {
return populationData;
}
}
// In real applications, you should not transpile code in the browser. You can see how to create your own application with Angular and DevExtreme here:
// https://js.devexpress.com/Documentation/Guide/Angular_Components/Getting_Started/Create_a_DevExtreme_Application/
System.config({
transpiler: 'ts',
typescriptOptions: {
module: "system",
emitDecoratorMetadata: true,
experimentalDecorators: true
},
meta: {
'typescript': {
"exports": "ts"
},
},
paths: {
'npm:': 'https://unpkg.com/'
},
map: {
'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js',
'typescript': 'npm:typescript@3.4.5/lib/typescript.js',
'@angular': 'npm:@angular',
'tslib': 'npm:tslib/tslib.js',
'rxjs': 'npm:rxjs',
'devextreme': 'npm:devextreme@20.1',
'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js',
'quill': 'npm:quill@1.3.7/dist/quill.js',
'devexpress-diagram': 'npm:devexpress-diagram@1.0.9',
'devexpress-gantt': 'npm:devexpress-gantt@1.0.7',
'devextreme-angular': 'npm:devextreme-angular@20.1'
},
packages: {
'app': {
main: './app.component.ts',
defaultExtension: 'ts'
},
'devextreme': {
defaultExtension: 'js'
},
'devextreme/events/utils': {
main: 'index'
},
'devextreme/events': {
main: 'index'
},
},
packageConfigPaths: [
"npm:*/package.json",
"npm:@angular/*/package.json",
"npm:@angular/common/*/package.json",
"npm:rxjs/operators/package.json",
"npm:devextreme-angular@20.1/*/package.json",
"npm:devextreme-angular@20.1/ui/*/package.json",
]
});
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<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/20.1.6/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.1.6/css/dx.light.css" />
<script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
<script src="https://unpkg.com/zone.js@0.10.2/dist/zone.js"></script>
<script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script src="config.js"></script>
<script>
System.import('app').catch(console.error.bind(console));
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<demo-app>Loading...</demo-app>
</div>
</body>
</html>