Pie with Annotations
Annotations are containers for images, text blocks, and custom content. Annotations can help deliver a more refined user-experience and can improve analysis and readability (by displaying additional information for visualized data).
To create annotations, populate the PieChart's annotations array. Each object in the array configures an individual annotation. To specify settings for all annotations, use the commonAnnotationSettings object. Individual settings take precedence over common settings.
You can set each annotation type property to "text", "image", or "custom". In this demo, the type used for all annotations is "image".
Annotations can deliver more information if you add tooltips. A tooltip appears when users hover the mouse pointer over an annotation. This demo illustrates how you can implement a tooltip with custom content via the tooltipTemplate property.
For more information on annotation settings, refer to the annotations[] help topic.
Feel free to share demo-related thoughts here.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
Thank you for the feedback!
If you have technical questions, please create a support ticket in the DevExpress Support Center.
Backend API
<dx-pie-chart id="pie" palette="Vintage" [dataSource]="champions">
<dxo-common-annotation-settings
type="image"
color="transparent"
[paddingLeftRight]="0"
[paddingTopBottom]="0"
tooltipTemplate="tooltipTemplate"
>
<dxo-image [height]="60" [width]="90"></dxo-image>
<dxo-border color="transparent"></dxo-border>
</dxo-common-annotation-settings>
<dxi-annotation
*ngFor="let item of annotations"
[argument]="item.country"
[data]="item.data"
[location]="item.location"
[offsetX]="item.offsetX"
[offsetY]="item.offsetY"
[color]="item.color"
>
<dxo-image [url]="item.image"></dxo-image>
<dxo-border [color]="item.borderColor"></dxo-border>
<dxo-shadow [opacity]="item.shadowOpacity"></dxo-shadow>
</dxi-annotation>
<dxi-series argumentField="country" valueField="gold">
<dxo-label
[visible]="true"
position="inside"
[radialOffset]="83"
backgroundColor="transparent"
>
<dxo-font [size]="16" [weight]="600"></dxo-font>
</dxo-label>
</dxi-series>
<dxo-tooltip [paddingLeftRight]="12" [paddingTopBottom]="10"></dxo-tooltip>
<dxo-legend [visible]="false"></dxo-legend>
<dxo-title
text="Ice Hockey World Championship Gold Medal Winners"
></dxo-title>
<div *dxTemplate="let annotation of 'tooltipTemplate'" class="medal-tooltip">
<div class="country-name"
>{{ annotation.data.country }}
<br *ngIf="annotation.data.oldCountryName" />{{
annotation.data.oldCountryName
}}
</div>
<div class="gold">
<span class="caption">Gold</span>: {{ annotation.data.gold }}
</div>
<div class="silver">
<span class="caption">Silver</span>: {{ annotation.data.silver }}
</div>
<div class="bronze">
<span class="caption">Bronze</span>: {{ annotation.data.bronze }}
</div>
</div>
</dx-pie-chart>
import { NgModule, Component, enableProdMode } from '@angular/core';
import { BrowserModule, BrowserTransferStateModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { DxPieChartModule } from 'devextreme-angular';
import { MedalistData, AnnotationInfo, Service } from './app.service';
if (!/localhost/.test(document.location.host)) {
enableProdMode();
}
@Component({
selector: 'demo-app',
templateUrl: 'app/app.component.html',
styleUrls: ['app/app.component.css'],
providers: [Service],
})
export class AppComponent {
champions: MedalistData[];
annotations: AnnotationInfo[];
constructor(service: Service) {
this.champions = service.getChampionsData();
this.annotations = service.getAnnotationSources();
}
}
@NgModule({
imports: [
BrowserModule,
BrowserTransferStateModule,
DxPieChartModule,
],
declarations: [AppComponent],
bootstrap: [AppComponent],
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #pie {
height: 440px;
}
::ng-deep .medal-tooltip {
font-size: 12px;
}
::ng-deep .medal-tooltip .country-name {
font-size: 14px;
font-weight: 700;
margin: 5px 0 10px 0;
}
::ng-deep .medal-tooltip .caption {
font-weight: 600;
}
import {
Injectable,
} from '@angular/core';
export class MedalistData {
country?: string;
oldCountryName?: string;
gold?: number;
silver?: number;
bronze?: number;
}
export class AnnotationInfo {
country: string;
data?: MedalistData;
image?: string;
location?: string;
offsetX?: number;
offsetY?: number;
color?: string;
borderColor?: string;
shadowOpacity?: number;
}
const champions: MedalistData[] = [{
country: 'Russia',
oldCountryName: 'Soviet Union',
gold: 27,
silver: 10,
bronze: 10,
}, {
country: 'Canada',
gold: 26,
silver: 15,
bronze: 9,
}, {
country: 'Czech Republic',
oldCountryName: 'Czechoslovakia',
gold: 12,
silver: 13,
bronze: 21,
}, {
country: 'Sweden',
gold: 11,
silver: 19,
bronze: 17,
}, {
country: 'Finland',
gold: 3,
silver: 8,
bronze: 3,
}, {
country: 'United States',
gold: 2,
silver: 9,
bronze: 8,
}, {
country: 'Great Britain',
gold: 1,
silver: 2,
bronze: 2,
}, {
country: 'Slovakia',
gold: 1,
silver: 2,
bronze: 1,
}];
const annotationSources: AnnotationInfo[] = [{
country: 'Russia',
offsetX: 15,
offsetY: 5,
}, {
country: 'Canada',
offsetY: 10,
}, {
country: 'Czech Republic',
offsetX: -5,
offsetY: -35,
}, {
country: 'Sweden',
offsetX: 20,
offsetY: -25,
}, {
country: 'Finland',
location: 'edge',
offsetX: 45,
offsetY: -85,
}, {
country: 'United States',
location: 'edge',
offsetX: 85,
offsetY: -45,
}, {
country: 'Great Britain',
location: 'edge',
offsetX: 81,
offsetY: 15,
}, {
country: 'Slovakia',
location: 'edge',
offsetX: 45,
offsetY: 80,
}];
const edgeAnnotationSettings = {
color: '#aaaaaa',
borderColor: '#aaaaaa',
shadowOpacity: 0.3,
};
@Injectable()
export class Service {
getChampionsData(): MedalistData[] {
return champions;
}
getAnnotationSources(): AnnotationInfo[] {
const annotations: AnnotationInfo[] = [];
for (let i = 0; i < annotationSources.length; i++) {
const annotation = annotationSources[i];
const country = annotation.country;
const image = `../../../../images/flags/3x2/${country.replace(/\s/, '')}.svg`;
const data = { ...champions.filter((d) => (d.country === country))[0] };
annotations.push({
...annotation,
image,
data,
...(annotation.location === 'edge' ? edgeAnnotationSettings : {}),
});
}
return annotations;
}
}
// 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/
window.exports = window.exports || {};
window.config = {
transpiler: 'ts',
typescriptOptions: {
module: 'system',
emitDecoratorMetadata: true,
experimentalDecorators: true,
},
meta: {
'typescript': {
'exports': 'ts',
},
'devextreme/localization.js': {
'esModule': true,
},
},
paths: {
'npm:': 'https://unpkg.com/',
},
map: {
'ts': 'npm:plugin-typescript@4.2.4/lib/plugin.js',
'typescript': 'npm:typescript@4.2.4/lib/typescript.js',
'@angular/core': 'npm:@angular/core@12.2.17',
'@angular/platform-browser': 'npm:@angular/platform-browser@12.2.17',
'@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic@12.2.17',
'@angular/forms': 'npm:@angular/forms@12.2.17',
'@angular/common': 'npm:@angular/common@12.2.17',
'@angular/compiler': 'npm:@angular/compiler@12.2.17',
'tslib': 'npm:tslib@2.3.1/tslib.js',
'rxjs': 'npm:rxjs@7.5.3/dist/bundles/rxjs.umd.js',
'rxjs/operators': 'npm:rxjs@7.5.3/dist/cjs/operators/index.js',
'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.28.1/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@23.1.6/cjs',
'devextreme/bundles/dx.all': 'npm:devextreme@23.1.6/bundles/dx.all.js',
'jszip': 'npm:jszip@3.7.1/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@1.6.2/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.2',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.49',
'devextreme-angular': 'npm:devextreme-angular@23.1.6',
'@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@7.4.11/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',
// Prettier
'prettier/standalone': 'npm:prettier@2.8.4/standalone.js',
'prettier/parser-html': 'npm:prettier@2.8.4/parser-html.js',
},
packages: {
'app': {
main: './app.component.ts',
defaultExtension: 'ts',
},
'devextreme': {
defaultExtension: 'js',
},
'devextreme/events/utils': {
main: 'index',
},
'devextreme/events': {
main: 'index',
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js',
},
'rxjs': {
defaultExtension: 'js',
},
'rxjs/operators': {
defaultExtension: 'js',
},
},
packageConfigPaths: [
'npm:@devextreme/*/package.json',
'npm:@devextreme/runtime@3.0.12/inferno/package.json',
'npm:@angular/*/package.json',
'npm:@angular/common@12.2.17/*/package.json',
'npm:rxjs@7.5.3/package.json',
'npm:rxjs@7.5.3/operators/package.json',
'npm:devextreme-angular@23.1.6/*/package.json',
'npm:devextreme-angular@23.1.6/ui/*/package.json',
'npm:devextreme-angular@23.1.6/package.json',
'npm:devexpress-diagram@2.2.2/package.json',
'npm:devexpress-gantt@4.1.49/package.json',
],
};
System.config(window.config);
<!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/23.1.5/css/dx.light.css" />
<script src="https://unpkg.com/core-js@2.6.12/client/shim.min.js"></script>
<script src="https://unpkg.com/zone.js@0.12.0/dist/zone.js"></script>
<script src="https://unpkg.com/reflect-metadata@0.1.13/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>