using System.Collections;
using UnityEngine;
using UnityEngine.UI;

public class UI_MaskPanel : BasePanel
{
    /// <summary>
    /// 淡入淡出速度0.5/s
    /// </summary>
    public float fadeInSpeed = 0.5f; // 淡入速度  

    /// <summary>
    /// 初始化
    /// </summary>
    public void Init()
    {
        FadeInAndOut(E_FadeInAndOut.FadeIn);
    }

    /// <summary>
    /// 淡入/出
    /// </summary>
    /// <param name="type"></param>
    public void FadeInAndOut(E_FadeInAndOut type) 
    {
        switch (type)
        {
            case E_FadeInAndOut.FadeIn:
                StartCoroutine(FadeInAsync());
                break;
            case E_FadeInAndOut.FadeOut:
                StartCoroutine(FadeOutAsync());
                break;
        }

        

    }

    /// <summary>
    /// 隐藏蒙版
    /// </summary>
    private void HideMask() 
    {
        FadeInAndOut(E_FadeInAndOut.FadeOut);
    }

    /// <summary>
    /// 淡入
    /// </summary>
    /// <returns></returns>
    private IEnumerator FadeInAsync()
    {
        // 淡入  
        float alpha = 0.0f;
        while (alpha < 1.0f)
        {
            alpha += fadeInSpeed * Time.deltaTime;
            alpha = Mathf.Clamp(alpha,0,1);
            GetControl<Image>("Mask").color = new Color(0, 0, 0, alpha);
            yield return null;
        }
    }

    /// <summary>
    /// 淡出
    /// </summary>
    /// <returns></returns>
    private IEnumerator FadeOutAsync()
    {
        // 淡入  
        float alpha = 1.0f;
        while (alpha > 0.0f)
        {
            alpha -= fadeInSpeed * Time.deltaTime;
            alpha = Mathf .Clamp(alpha,0,1);
            GetControl<Image>("Mask").color = new Color(0, 0, 0, alpha);
            yield return null;
        }
        UIManager.Instance.HidePanel<UI_MaskPanel>();
    }

    /// <summary>
    /// 显示
    /// </summary>
    public override void ShowMe()
    {
#if UNITY_EDITOR
        EventCenter.Instance.AddEventListener(Enum_EventType.HideMask, HideMask);
#else
        GameManager.EventMgr.AddEventListener(Enum_EventType.HideMask, HideMask);
#endif
    }

    /// <summary>
    /// 隐藏面板
    /// </summary>
    public override void HideMe()
    {
#if UNITY_EDITOR
        EventCenter.Instance.RemoveEventListener(Enum_EventType.HideMask, HideMask);
#else
        GameManager.EventMgr.RemoveEventListener(Enum_EventType.HideMask, HideMask);
#endif

    }
}