void SetItemDisplay(bool isRebuild = false)
{
if (content == null)
{
throw new Exception("SetItemDisplay Exception: content is null !");
}
//计算已显示的哪些需要隐藏
for (int i = 0; i < m_items.Count; i++)
{
m_items[i].OnDrag();
//已经完全离开了显示区域
if (!m_viewBounds.Intersects(GetItemBounds(m_items[i].m_index)))
{
ReusingScrollItemBase itemTmp = m_items[i];
m_items.Remove(itemTmp);
itemTmp.OnHide();
if (!isRebuild)
{
//隐藏并移到缓存
itemTmp.gameObject.SetActive(false);
}
m_itemCaches.Add(itemTmp);
m_indexList[itemTmp.m_index].status = ReusingStatus.Hide;
}
}
//计算出哪些需要显示
//如果有未显示的则显示出来，从对象池取出对象
bool m_clip = false;
for (int i = 0; i < m_indexList.Count; i++)
{
if (m_indexList[i].status == ReusingStatus.Hide)
{
if (m_viewBounds.Intersects(GetItemBounds(m_indexList[i].index)))
{
ShowItem(i, isRebuild, m_datas[i]);
m_indexList[i].status = ReusingStatus.Show;
m_clip = true;
}
else
{
if (m_clip)
{
break;
}
}
}
else
{
m_clip = true;
}
}
}
void SetItemDisplay()
{
m_clip = false;
//计算已显示的哪些需要隐藏
for (int i = 0; i < m_items.Count; i++)
{
m_items[i].OnDrag();
if (!m_clip)
{
m_startPos = m_items[i].m_index;
m_clip = true;
}
else
{
if (m_startPos > m_items[i].m_index)
{
m_startPos = m_items[i].m_index;
}
}
//已经完全离开了显示区域
if (!m_viewBounds.Intersects(GetItemBounds(m_items[i].m_index)))
{
ReusingScrollItemBase itemTmp = m_items[i];
m_items.Remove(itemTmp);
itemTmp.OnHide();
//隐藏并移到缓存
itemTmp.gameObject.SetActive(false);
m_itemCatchs.Add(itemTmp);
m_indexList[itemTmp.m_index].status = ReusingStatus.Hide;
}
}
if (m_startPos > 0)
{
m_startPos--;
}
//Debug.Log(m_startPos);
m_clip = false;
//计算出哪些需要显示
//如果有未显示的则显示出来，从对象池取出对象
for (int i = m_startPos; i < m_indexList.Count; i++)
{
if (m_indexList[i].status == ReusingStatus.Hide)
{
if (m_viewBounds.Intersects(GetItemBounds(m_indexList[i].index)))
{
ShowItem(i, m_datas[i]);
m_indexList[i].status = ReusingStatus.Show;
m_clip = true;
}
else
{
if (m_clip)
{
break;
}
}
}
else
{
m_clip = true;
}
}
}