Multiple Point Selection
Documentation
This demo illustrates the use of multi-point selection within the Chart component.
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<dx-chart
id="chart"
[dataSource]="medalsInfo"
pointSelectionMode="multiple"
[rotated]="true"
title="Olympic Medals in 2008"
(onPointClick)="pointClick($event)"
>
<dxi-series valueField="gold" name="Gold Medals" color="#ffd700"></dxi-series>
<dxi-series
valueField="silver"
name="Silver Medals"
color="#c0c0c0"
></dxi-series>
<dxi-series
valueField="bronze"
name="Bronze Medals"
color="#cd7f32"
></dxi-series>
<dxo-common-series-settings argumentField="country" type="stackedbar">
<dxo-selection-style>
<dxo-hatching direction="left"></dxo-hatching>
</dxo-selection-style>
</dxo-common-series-settings>
<dxo-legend verticalAlignment="bottom" horizontalAlignment="center">
</dxo-legend>
<dxo-export [enabled]="true"></dxo-export>
</dx-chart>
import { NgModule, Component, enableProdMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { DxChartModule } from 'devextreme-angular';
import { Service, MedalsInfo } 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 {
medalsInfo: MedalsInfo[];
constructor(service: Service) {
this.medalsInfo = service.getMedalsInfo();
}
pointClick(e: any) {
const point = e.target;
if (point.isSelected()) {
point.clearSelection();
} else {
point.select();
}
}
}
@NgModule({
imports: [
BrowserModule,
DxChartModule,
],
declarations: [AppComponent],
bootstrap: [AppComponent],
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #chart {
height: 440px;
}
import { Injectable } from '@angular/core';
export class MedalsInfo {
country: string;
gold: number;
silver: number;
bronze: number;
}
const medalsInfo: MedalsInfo[] = [{
country: 'USA',
gold: 36,
silver: 38,
bronze: 36,
}, {
country: 'China',
gold: 51,
silver: 21,
bronze: 28,
}, {
country: 'Russia',
gold: 23,
silver: 21,
bronze: 28,
}, {
country: 'Britain',
gold: 19,
silver: 13,
bronze: 15,
}, {
country: 'Australia',
gold: 14,
silver: 15,
bronze: 17,
}, {
country: 'Germany',
gold: 16,
silver: 10,
bronze: 15,
}];
@Injectable()
export class Service {
getMedalsInfo(): MedalsInfo[] {
return medalsInfo;
}
}
// 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.config = {
transpiler: 'ts',
typescriptOptions: {
module: 'system',
emitDecoratorMetadata: true,
experimentalDecorators: true,
},
meta: {
'typescript': {
'exports': 'ts',
},
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'esModule': true,
},
},
paths: {
'npm:': 'https://unpkg.com/',
},
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'typescript': 'npm:typescript@4.2.4/lib/typescript.js',
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'@angular/forms': 'npm:@angular/forms@12.2.16',
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'@angular/compiler': 'npm:@angular/compiler@12.2.16',
'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@1.28.0/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
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'jszip': 'npm:jszip@3.7.1/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@1.5.18/dist/dx-quill.min.js',
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'@devextreme/runtime': 'npm:@devextreme/runtime@3.0.11',
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'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js',
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'inferno-hydrate': 'npm:inferno-hydrate@7.4.11/dist/inferno-hydrate.min.js',
'inferno-clone-vnode': 'npm:inferno-clone-vnode@7.4.11/dist/inferno-clone-vnode.min.js',
'inferno-create-class': 'npm:inferno-create-class@7.4.11/dist/inferno-create-class.min.js',
'inferno-extras': 'npm:inferno-extras@7.4.11/dist/inferno-extras.min.js',
// Prettier
'prettier/standalone': 'npm:prettier@2.7.1/standalone.js',
'prettier/parser-html': 'npm:prettier@2.7.1/parser-html.js',
},
packages: {
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main: './app.component.ts',
defaultExtension: 'ts',
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main: 'index',
},
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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@3.0.11/inferno/package.json',
'npm:@angular/*/package.json',
'npm:@angular/common@12.2.16/*/package.json',
'npm:rxjs@7.5.3/package.json',
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'npm:devextreme-angular@22.1.6/*/package.json',
'npm:devextreme-angular@22.1.6/ui/*/package.json',
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'npm:devexpress-diagram@2.1.65/package.json',
'npm:devexpress-gantt@4.1.33/package.json',
],
};
System.config(window.config);
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