37 lines
1.5 KiB
TypeScript
37 lines
1.5 KiB
TypeScript
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import { Component, ElementRef, ViewChild, Input, OnChanges, ChangeDetectionStrategy } from '@angular/core';
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import { TransactionStripped } from 'src/app/interfaces/websocket.interface';
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@Component({
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selector: 'app-tx-bowtie-graph-tooltip',
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templateUrl: './tx-bowtie-graph-tooltip.component.html',
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styleUrls: ['./tx-bowtie-graph-tooltip.component.scss'],
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})
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export class TxBowtieGraphTooltipComponent implements OnChanges {
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@Input() line: { type: string, value?: number, index?: number, address?: string, rest?: number } | void;
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@Input() cursorPosition: { x: number, y: number };
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tooltipPosition = { x: 0, y: 0 };
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@ViewChild('tooltip') tooltipElement: ElementRef<HTMLCanvasElement>;
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constructor() {}
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ngOnChanges(changes): void {
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if (changes.cursorPosition && changes.cursorPosition.currentValue) {
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let x = Math.max(10, changes.cursorPosition.currentValue.x - 50);
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let y = changes.cursorPosition.currentValue.y + 20;
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if (this.tooltipElement) {
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const elementBounds = this.tooltipElement.nativeElement.getBoundingClientRect();
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const parentBounds = this.tooltipElement.nativeElement.offsetParent.getBoundingClientRect();
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if ((parentBounds.left + x + elementBounds.width) > parentBounds.right) {
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x = Math.max(0, parentBounds.width - elementBounds.width - 10);
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}
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if (y + elementBounds.height > parentBounds.height) {
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y = y - elementBounds.height - 20;
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}
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}
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this.tooltipPosition = { x, y };
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}
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}
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}
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