garden_client/Assets/Script/Tool/VirtualScrollRect.cs

using System;
using System.Collections;
using System.Collections.Generic;

using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

public class VirtualScrollRect : ScrollRect
{
    #region

    public Action OnVerticalLessEqual0;
    public Action OnVerticalGreaterEqual1;
    public Action OnHorizontalLessEqual0;
    public Action OnHorizontalGreaterEqual1;

    #endregion

    public void Recycle(Vector2 contentOffset)
    {
        m_ContentStartPosition += contentOffset;
    }

    public override void OnDrag(PointerEventData eventData)
    {
        base.OnDrag(eventData);
        
        if (verticalNormalizedPosition >= 1)
            OnVerticalGreaterEqual1.SafeInvoke();

        if (verticalNormalizedPosition <= 0)
            OnVerticalLessEqual0.SafeInvoke();

        if (horizontalNormalizedPosition >= 1)
            OnHorizontalGreaterEqual1.SafeInvoke();

        if (horizontalNormalizedPosition <= 0)
            OnHorizontalLessEqual0.SafeInvoke();
    }
}