//--------------------------------------------------------
//    [Author]:           第二世界
//    [  Date ]:           Tuesday, August 22, 2017
//--------------------------------------------------------
using UnityEngine;
using System.Collections;
using UnityEngine.UI;

namespace Snxxz.UI {

    [RequireComponent(typeof(Image))]
    public class SpriteEffect:MonoBehaviour {

        [SerializeField]
        Effect m_Effect = Effect.None;

        CanvasAddition m_CanvasAddition;
        public CanvasAddition canvasAddition {
            get {
                return this.m_CanvasAddition ?? (this.m_CanvasAddition = this.GetComponentInParent<CanvasAddition>());
            }
        }

        Image m_Image;
        public Image image {
            get {
                return m_Image ?? (m_Image = this.AddMissingComponent<Image>());
            }
        }

        Material m_TwinkleMaterial;
        Material twinleMaterial {
            get {
                return m_TwinkleMaterial??(m_TwinkleMaterial=MaterialUtility.GetDefaultSpriteGrayMaterial());
            }
        }



        private void OnEnable() {
            if(this.image != null) {
                switch(this.m_Effect) {
                    case Effect.Gray:
                        this.image.material = canvasAddition.spriteGrayMaterial;
                        break;
                    case Effect.Twinkle:
                        this.image.material = this.canvasAddition.spriteGrayMaterial;
                        break;
                    case Effect.None:
                        this.image.material = null;
                        break;
                    default:
                        break;
                }
            }
        }

        public enum Effect {
            None,
            Gray,
            Twinkle,
        }

    }

}