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using System.Reflection;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;
public class DropMe : MonoBehaviour, IDropHandler, IPointerEnterHandler, IPointerExitHandler
{
public Image containerImage;
public Image receivingImage;
private Color normalColor;
public Color highlightColor = Color.yellow;
public void OnEnable ()
{
if (containerImage != null)
normalColor = containerImage.color;
}
public void OnDrop(PointerEventData data)
{
containerImage.color = normalColor;
if (receivingImage == null)
return;
Sprite dropSprite = GetDropSprite (data);
if (dropSprite != null)
receivingImage.overrideSprite = dropSprite;
}
public void OnPointerEnter(PointerEventData data)
{
if (containerImage == null)
return;
Sprite dropSprite = GetDropSprite (data);
if (dropSprite != null)
containerImage.color = highlightColor;
}
public void OnPointerExit(PointerEventData data)
{
if (containerImage == null)
return;
containerImage.color = normalColor;
}
private Sprite GetDropSprite(PointerEventData data)
{
var originalObj = data.pointerDrag;
if (originalObj == null)
return null;
var dragMe = originalObj.GetComponent<DragMe>();
if (dragMe == null)
return null;
var srcImage = originalObj.GetComponent<Image>();
if (srcImage == null)
return null;
return srcImage.sprite;
}
}
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