1 files changed, 50 insertions, 0 deletions
diff --git a/apps/web/src/lib/selection/selection-box.tsx b/apps/web/src/lib/selection/selection-box.tsx
new file mode 100644
index 00000000..0b757e36
--- /dev/null
+++ b/apps/web/src/lib/selection/selection-box.tsx
@@ -0,0 +1,50 @@
+"use client";
+
+import { useMemo } from "react";
+
+interface SelectionBoxProps {
+	startPos: { x: number; y: number } | null;
+	currentPos: { x: number; y: number } | null;
+	containerRef: React.RefObject<HTMLElement | null>;
+	isActive: boolean;
+}
+
+export function SelectionBox({
+	startPos,
+	currentPos,
+	containerRef,
+	isActive,
+}: SelectionBoxProps) {
+	const selectionBoxStyle = useMemo(() => {
+		if (!isActive || !startPos || !currentPos || !containerRef.current) {
+			return null;
+		}
+
+		const containerRect = containerRef.current.getBoundingClientRect();
+		const startX = startPos.x - containerRect.left;
+		const startY = startPos.y - containerRect.top;
+		const currentX = currentPos.x - containerRect.left;
+		const currentY = currentPos.y - containerRect.top;
+
+		const left = Math.min(startX, currentX);
+		const top = Math.min(startY, currentY);
+		const width = Math.abs(currentX - startX);
+		const height = Math.abs(currentY - startY);
+
+		return {
+			left: `${left}px`,
+			top: `${top}px`,
+			width: `${width}px`,
+			height: `${height}px`,
+		};
+	}, [containerRef, currentPos, isActive, startPos]);
+
+	if (!selectionBoxStyle) return null;
+
+	return (
+		<div
+			style={selectionBoxStyle}
+			className="border-foreground/50 bg-foreground/5 pointer-events-none absolute z-50 border"
+		/>
+	);
+}