using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;

[ExecuteAlways]
public class LayoutElementSizeClamp : LayoutElement
{
    [SerializeField] bool m_ClampEnable;
    public bool clampEnable { get { return m_ClampEnable; } set { m_ClampEnable = value; } }

    [SerializeField] Clamp m_Clamp;
    public Clamp clamp { get { return m_Clamp; } }

    [SerializeField] RectTransform m_Target;

    Vector2 targetSizeRef = Vector2.zero;

    private void LateUpdate()
    {
        if (clampEnable && m_Target != null)
        {
            if (targetSizeRef != m_Target.sizeDelta)
            {
                preferredHeight = Mathf.Clamp(m_Target.rect.height, m_Clamp.minY, m_Clamp.maxY);
                preferredWidth = Mathf.Clamp(m_Target.rect.width, m_Clamp.minX, m_Clamp.maxX);
                targetSizeRef = new Vector2(preferredWidth, preferredHeight);
            }
        }
    }

    [System.Serializable]
    public struct Clamp
    {
        public float minX;
        public float maxX;
        public float minY;
        public float maxY;
    }

}