using UnityEngine;
using UnityEngine.EventSystems;

public class UIDragItem : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler
{
    private CanvasGroup canvasGroup;
    private Transform originParent;

    void Awake()
    {
        canvasGroup = GetComponent<CanvasGroup>();
        originParent = transform.parent;
    }

    public void OnBeginDrag(PointerEventData eventData)
    {
        canvasGroup.blocksRaycasts = false;
        transform.SetParent(transform.root); // ×îÉϲã
    }

    public void OnDrag(PointerEventData eventData)
    {
        transform.position = eventData.position;
    }

    public void OnEndDrag(PointerEventData eventData)
    {
        canvasGroup.blocksRaycasts = true;
        transform.SetParent(originParent);
    }
}