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"use client";
import { useEffect, useRef } from "react";
interface SelectionBoxProps {
startPos: { x: number; y: number } | null;
currentPos: { x: number; y: number } | null;
containerRef: React.RefObject<HTMLElement>;
isActive: boolean;
}
export function SelectionBox({
startPos,
currentPos,
containerRef,
isActive,
}: SelectionBoxProps) {
const selectionBoxRef = useRef<HTMLDivElement>(null);
useEffect(() => {
if (!isActive || !startPos || !currentPos || !containerRef.current) return;
const container = containerRef.current;
const containerRect = container.getBoundingClientRect();
// Calculate relative positions within the container
const startX = startPos.x - containerRect.left;
const startY = startPos.y - containerRect.top;
const currentX = currentPos.x - containerRect.left;
const currentY = currentPos.y - containerRect.top;
// Calculate the selection rectangle bounds
const left = Math.min(startX, currentX);
const top = Math.min(startY, currentY);
const width = Math.abs(currentX - startX);
const height = Math.abs(currentY - startY);
// Update the selection box position and size
if (selectionBoxRef.current) {
selectionBoxRef.current.style.left = `${left}px`;
selectionBoxRef.current.style.top = `${top}px`;
selectionBoxRef.current.style.width = `${width}px`;
selectionBoxRef.current.style.height = `${height}px`;
}
}, [startPos, currentPos, isActive, containerRef]);
if (!isActive || !startPos || !currentPos) return null;
return (
<div
ref={selectionBoxRef}
className="absolute pointer-events-none z-50"
style={{
backgroundColor: "hsl(var(--foreground) / 0.1)",
}}
/>
);
}
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