public void OnBeginDrag(PointerEventData eventData)
{
if (HolderPrefab == null)
{
m_holder = new GameObject(this.name + "(Holder)");
}
else
{
m_holder = GameObject.Instantiate(HolderPrefab);
m_holder.name = this.name + "(Holder)";
}
m_holder.transform.SetParent(this.transform.parent);
m_holder.transform.SetSiblingIndex(this.transform.GetSiblingIndex());
if (this.GetComponent <LayoutElement>() != null)
{
LayoutElement le = m_holder.AddComponent <LayoutElement>();
le.preferredWidth = this.GetComponent <LayoutElement>().preferredWidth;
le.preferredHeight = this.GetComponent <LayoutElement>().preferredHeight;
le.flexibleWidth = 0;
le.flexibleHeight = 0;
}
m_zone = this.transform.parent.GetComponent <DropZone>();
m_holderZone = m_zone;
//如果开始拖动，将它移出公共区域
this.transform.SetParent(this.transform.parent.parent);
SetBlocksRaycasts(false);
}
public void ExitZone(DropZone zone)
{
if (m_holderZone == zone)
{
m_holderZone = m_zone;
}
}
public void EnterZone(DropZone zone)
{
m_holderZone = zone;
}
public void DropZone(DropZone zone)
{
m_zone.OnDropOut(this);
m_zone = zone;
m_zone.OnDropIn(this);
}
