/// <summary>
/// 触发了OnEnter方法时，实现提示板的显示
/// </summary>
/// <param name="gridTransform">触发的Item的位置</param>
void GridUI_OnEnter(Transform gridTransform)
{
Item item = ItemModel.GetItem(gridTransform.name);
if (item == null)
{
return;
}
string content = GetTooltipText(item);
m_TooltipUI.UpdateToolTip(content);
isShow = true;
}