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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 | 1x 1x 1x 1x 1x 1x 1x | import {
AfterViewInit,
ChangeDetectionStrategy,
Component,
DOCUMENT,
ElementRef,
inject,
Input,
OnChanges,
ViewChild,
} from '@angular/core';
import { IChartInputChanges } from '../../interfaces/chart-component.interface';
import { IPieChartDataNode, IPieChartOptions } from '../../interfaces/pie-chart.interface';
import { D3_CHART_FACTORY } from '../../providers/d3-chart-factory.provider';
import { AppD3ChartBase } from '../_base/chart.base';
type TPieData = IPieChartDataNode[];
type TPieOptions = Partial<IPieChartOptions>;
/** The pie chart component. */
@Component({
selector: 'app-pie-chart',
templateUrl: './pie-chart.component.html',
styleUrls: ['./pie-chart.component.scss'],
changeDetection: ChangeDetectionStrategy.OnPush,
standalone: false,
})
export class AppPieChartComponent extends AppD3ChartBase<TPieData, TPieOptions> implements AfterViewInit, OnChanges {
private readonly doc = inject(DOCUMENT);
private readonly factory = inject(D3_CHART_FACTORY);
/** The chart id. */
@Input() public chartId = 'pie-0';
/** The chart data. */
@Input() public data: TPieData = [];
/** The chart options. */
@Input() public options: TPieOptions = {};
/** D3 chart view child reference. */
@ViewChild('container') public readonly container?: ElementRef<HTMLDivElement>;
constructor() {
super();
}
/** The chart options constructor. */
protected chartOptions(): TPieOptions {
const margin: TPieOptions['margin'] = { top: 50, right: 50, bottom: 50, left: 50 };
const minWidth = 350;
const modifiers = {
width: 10,
height: 20,
};
const width = Math.min(minWidth, this.doc.body.clientWidth - modifiers.width) - margin.left - margin.right;
const height = Math.min(width, this.doc.body.clientHeight - margin.top - margin.bottom - modifiers.height);
const options: TPieOptions = {
width,
height,
margin,
...this.options,
};
return options;
}
/** Draws the chart. */
protected drawChart(): void {
if (typeof this.container !== 'undefined') {
const options = this.chartOptions();
this.factory.drawPieChart(this.container, this.data, options);
}
}
/** Actually draws the chart after the component view is initialized. */
public ngAfterViewInit(): void {
this.drawChart();
}
/** Redraws the chart on changes. */
public ngOnChanges(changes: IChartInputChanges): void {
const data: TPieData | undefined = changes.data?.currentValue;
const options: TPieOptions = changes.options?.currentValue;
if ((typeof data !== 'undefined' && data !== null) || (typeof options !== 'undefined' && options !== null)) {
this.drawChart();
}
}
}
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