//--------------------------------------------------------
//    [Author]:           玩个游戏
//    [  Date ]:           Saturday, November 25, 2017
//--------------------------------------------------------
using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using UnityEngine.Events;
using System;

    [RequireComponent(typeof(RectTransform))]
    public class FakeButton2 : MonoBehaviour
    {

        RectTransform m_RectTransform;
        public RectTransform rectTransform { get { return m_RectTransform ?? (m_RectTransform = this.transform as RectTransform); } }

        float overTime = float.MaxValue;
        Action m_OnClick;

        public void AddListener(Action _callBack)
        {
            m_OnClick += _callBack;
        }

        public void RemoveAllListeners()
        {
            m_OnClick = null;
        }

        private void LateUpdate()
        {
            if (Input.GetMouseButtonDown(0))
            {
                var sp = Input.mousePosition;
                if (RectTransformUtility.RectangleContainsScreenPoint(this.transform as RectTransform, sp, CameraManager.uiCamera))
                {
                    overTime = Time.realtimeSinceStartup + 0.03f;
                }
            }

            if (Input.GetMouseButtonUp(0))
            {
                var sp = Input.mousePosition;
                if (RectTransformUtility.RectangleContainsScreenPoint(this.transform as RectTransform, sp, CameraManager.uiCamera))
                {
                    if (Time.realtimeSinceStartup > overTime)
                    {
                        m_OnClick?.Invoke();
                        overTime = float.MaxValue;
                    }
                }
            }
        }

    }