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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 92 93 94 95 96 97 98 99 100 101 102 103 104 105 | 1x 2x 54x 53x 53x 2x 15x 2x 3x 3x 2x 6x 84x 84x 84x 84x | import { BreakpointObserver, Breakpoints } from '@angular/cdk/layout';
import { ChangeDetectionStrategy, Component, inject } from '@angular/core';
import { first, map, switchMap, timer } from 'rxjs';
import { ILineChartOptions, TDateFormat, TLineChartData } from '../../interfaces/line-chart.interface';
/** Line chart example. */
@Component({
selector: 'app-chart-examples-line',
templateUrl: './chart-examples-line.component.html',
styleUrls: ['./chart-examples-line.component.scss'],
changeDetection: ChangeDetectionStrategy.OnPush,
standalone: false,
})
export class AppChartExamplesLineComponent {
private readonly breakpointObserver = inject(BreakpointObserver);
/** The chart data. */
private get chartData() {
return [
[
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
].sort((a, b) => a.timestamp - b.timestamp),
[
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
].sort((a, b) => a.timestamp - b.timestamp),
[
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
{ timestamp: this.randomTimestamp(), value: this.randomValue() },
].sort((a, b) => a.timestamp - b.timestamp),
] as TLineChartData[];
}
/** The breakpoint observer stream. */
private readonly breakpoint$ = this.breakpointObserver
.observe([Breakpoints.XSmall, Breakpoints.Small, Breakpoints.Medium, Breakpoints.Large, Breakpoints.XLarge])
.pipe(map(result => Object.keys(result.breakpoints).find(item => result.breakpoints[item]) ?? 'unknown'));
/** The chart configuration stream. */
public readonly chartConfig$ = this.breakpoint$.pipe(
switchMap(() => {
const timeout = 100;
return timer(timeout).pipe(
first(),
map(() => ({
data: this.chartData,
datasetLabels: Array.from(new Array(this.chartData.length)).map((item, index) => `Dataset ${index}`),
options: this.lineChartOptions(),
optionsDateDdMmYy: this.lineChartOptions('dd/mm/yy'),
optionsDateDdMmYyyy: this.lineChartOptions('dd/mm/yyyy'),
optionsDateMmYyyy: this.lineChartOptions('mm/yyyy'),
})),
);
}),
);
/**
* Random value generator.
* @param range value range
*/
private randomValue(range?: number) {
const defaultRange = 100;
return Math.floor(Math.random() * (range ?? defaultRange) + 1);
}
/**
* Random timestamp generator.
* @param range value range
*/
private randomTimestamp(range?: number) {
const defaultRange = 100000000;
return Math.floor(Math.random() * (range ?? defaultRange) + new Date().getTime());
}
/**
* Example line chart options.
* @param dateFormat date format
*/
private lineChartOptions(dateFormat: TDateFormat = 'default') {
return {
chartTitle: `Example line chart, date format ${dateFormat}`,
xAxisTitle: 'Date range',
yAxisTitle: 'Value range',
dateFormat,
} as Partial<ILineChartOptions>;
}
}
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