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

public class ViewBagEquip : MonoBehaviour, IPointerEnterHandler, IPointerExitHandler
{
    public GameObject viewEquipmentImg;//查看装备UI
    public GameObject viewEquipmentImgSprite;//查看装备UI的图片精灵
    private string equipmentSpriteName;//装备精灵名
    public string viewEquipmentImgSpriteName;//查看装备时装备精灵名
    private RectTransform rectTransform;
    private Vector2 pos;
    private Vector2 offset = new Vector2(8f, 8f);
    
    // Use this for initialization
    void Start () {
        viewEquipmentImg = transform.parent.parent.Find("Image").gameObject;
        equipmentSpriteName = this.GetComponent<Image>().sprite.name;
        viewEquipmentImgSpriteName = equipmentSpriteName.Substring(0, equipmentSpriteName.Length - 1) + "D";
        viewEquipmentImgSprite = Resources.Load<GameObject>("UIPrefab/Equipment/" + viewEquipmentImgSpriteName);

        rectTransform = viewEquipmentImg.transform as RectTransform;
    }
	
	// Update is called once per frame
	void Update () {
        if (viewEquipmentImg.activeSelf
            && RectTransformUtility.ScreenPointToLocalPointInRectangle(transform.parent.parent.transform as RectTransform, Input.mousePosition, null, out pos))
        {
            rectTransform.anchoredPosition = new Vector2(pos.x + offset.x,
                pos.y + offset.y);
        }
    }

    public void OnPointerEnter(PointerEventData eventData)
    {
        viewEquipmentImg.SetActive(true);

        viewEquipmentImg.GetComponent<Image>().sprite = viewEquipmentImgSprite.GetComponent<SpriteRenderer>().sprite;
        viewEquipmentImg.transform.Find("Text").GetComponent<Text>().text = equipmentSpriteName.Substring(0, equipmentSpriteName.Length - 1);
    }

    public void OnPointerExit(PointerEventData eventData)
    {
        viewEquipmentImg.SetActive(false);
    }
}