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import {
Component,
ElementRef,
Input,
OnChanges,
OnInit,
SimpleChanges,
ViewChild
} from '@angular/core';
import { ChartTooltip } from '~/app/shared/models/chart-tooltip';
import { DimlessBinaryPipe } from '~/app/shared/pipes/dimless-binary.pipe';
@Component({
selector: 'cd-sparkline',
templateUrl: './sparkline.component.html',
styleUrls: ['./sparkline.component.scss']
})
export class SparklineComponent implements OnInit, OnChanges {
@ViewChild('sparkCanvas', { static: true })
chartCanvasRef: ElementRef;
@ViewChild('sparkTooltip', { static: true })
chartTooltipRef: ElementRef;
@Input()
data: any;
@Input()
style = {
height: '30px',
width: '100px'
};
@Input()
isBinary: boolean;
public colors: Array<any> = [
{
backgroundColor: 'rgba(40,140,234,0.2)',
borderColor: 'rgba(40,140,234,1)',
pointBackgroundColor: 'rgba(40,140,234,1)',
pointBorderColor: '#fff',
pointHoverBackgroundColor: '#fff',
pointHoverBorderColor: 'rgba(40,140,234,0.8)'
}
];
options: Record<string, any> = {
animation: {
duration: 0
},
responsive: true,
maintainAspectRatio: false,
legend: {
display: false
},
elements: {
line: {
borderWidth: 1
}
},
tooltips: {
enabled: false,
mode: 'index',
intersect: false,
custom: undefined,
callbacks: {
label: (tooltipItem: any) => {
if (this.isBinary) {
return this.dimlessBinaryPipe.transform(tooltipItem.yLabel);
} else {
return tooltipItem.yLabel;
}
},
title: () => ''
}
},
scales: {
yAxes: [
{
display: false
}
],
xAxes: [
{
display: false
}
]
}
};
public datasets: Array<any> = [
{
data: []
}
];
public labels: Array<any> = [];
constructor(private dimlessBinaryPipe: DimlessBinaryPipe) {}
ngOnInit() {
const getStyleTop = (tooltip: any) => {
return tooltip.caretY - tooltip.height - tooltip.yPadding - 5 + 'px';
};
const getStyleLeft = (tooltip: any, positionX: number) => {
return positionX + tooltip.caretX + 'px';
};
const chartTooltip = new ChartTooltip(
this.chartCanvasRef,
this.chartTooltipRef,
getStyleLeft,
getStyleTop
);
chartTooltip.customColors = {
backgroundColor: this.colors[0].pointBackgroundColor,
borderColor: this.colors[0].pointBorderColor
};
this.options.tooltips.custom = (tooltip: any) => {
chartTooltip.customTooltips(tooltip);
};
}
ngOnChanges(changes: SimpleChanges) {
this.datasets[0].data = changes['data'].currentValue;
this.labels = [...Array(changes['data'].currentValue.length)];
}
}
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