/*private void WrapContent ()
* {
* Vector3[] conner_Local = new Vector3[4];
* for (int i = 0; i < 4; i++) {
* conner_Local [i] = transform.InverseTransformPoint (conners [i]);
* Debug.Log ("conner_Local[i]: " + conner_Local [i]);
* }
* Vector3 lastItemPos = _listItem.Count > 0 ? _listItem[_listItem.Count - 1].transform.localPosition : Vector3.zero;
* Debug.Log("lastItemPos.y <= conner_Local[0].y : " + lastItemPos.y + "conner_Local[0].y" + conner_Local[0].y);
* Debug.Log("itemTypeStart: " + itemTypeStart);
* if (lastItemPos.y <= conner_Local[0].y || _listItem.Count == 0)
* {
* ChatContentIndexCallback temp = CreateItem(itemTypeStart);
* temp.transform.SetAsFirstSibling();
* itemTypeStart--;
* _listItem.Add(temp);
* }
* }*/
// Update is called once per frame
void Update()
{
//if (_listItem.Count > 0) {
//GameObject obj = _listItem[]
//Debug.Log(_scrollRect.content.sizeDelta.y);
if (_chatStateType == ChatStateType.initItem)
{
if (itemTypeStart > 0)
{
Vector3[] conner_Local = new Vector3[4];
for (int i = 0; i < 4; i++)
{
conner_Local[i] = itemParent.InverseTransformPoint(conners[i]);
//Debug.Log ("conner_Local[i]: " + conner_Local [i]);
}
//Vector3 center = (conner_Local [0] + conner_Local [3]) / 2;//计算此时中心点的坐标
Vector3 lastItemPos = _listItem.Count > 0 ? _listItem [_listItem.Count - 1].transform.localPosition : Vector3.zero;
//Debug.Log("lastItemPos.y <= conner_Local[0].y : " + lastItemPos.y + "conner_Local[0].y" + conner_Local[0].y);
//Debug.Log("itemTypeStart: "+itemTypeStart);
if (lastItemPos.y <= conner_Local[0].y || _listItem.Count == 0)
{
ChatContentIndexCallback temp = CreateItem(itemTypeStart);
temp.transform.SetAsFirstSibling();
itemTypeStart--;
_listItem.Add(temp);
}
else
{
startPostion = _scrollRect.content.position;
_chatStateType = ChatStateType.empty;
}
}
else
{
_chatStateType = ChatStateType.empty;
}
}
else if (_chatStateType == ChatStateType.BotttomToTop)
{
//Debug.Log("itemTypeEnd: " + itemTypeEnd + "totalCount: " + totalCount);
MoveBotttomToTop();
}
else if (_chatStateType == ChatStateType.TopToBottom)
{
//Debug.Log("itemTypeStart: "+itemTypeStart);
MoveTopToBottom();
}
//startPostion = _scrollRect.content.anchoredPosition;
}
//向上移动判断
private void MoveBotttomToTop()
{
if (itemTypeEnd < totalCount)
{
Vector3[] conner_Local = new Vector3[4];
for (int i = 0; i < 4; i++)
{
conner_Local[i] = itemParent.InverseTransformPoint(conners[i]);
//Debug.Log("conner_Local[i]: " + conner_Local[i]);
}
Vector3 lastItemPos = _listItem.Count > 1 ? _listItem [_listItem.Count - 2].transform.localPosition : Vector3.zero;
//移除上边不在范围的
if (lastItemPos.y > conner_Local[0].y)
{
if (_listItem.Count > 0)
{
ChatContentIndexCallback startItem = _listItem [_listItem.Count - 1];
startItem.gameObject.SetActive(false);
_listItem.Remove(startItem);
_pool.Add(startItem);
itemTypeStart++;
//Debug.Log ("delete");
}
}
//Debug.Log("BotttomToTop");
//增加新的
Vector3 endItemPos = _listItem.Count > 0 ? _listItem [0].transform.localPosition : Vector3.zero;
//Debug.Log(endItemPos - _scrollRect.transform.position);
//if (itemStartY2 <= itemEndTempY || _listItem.Count == 0) {
if (endItemPos.y > conner_Local[3].y || _listItem.Count == 0)
{
//减少新的item的height
//Debug.Log("_verLayoutGroup.padding.bottom: "+_verLayoutGroup.padding.bottom);
itemTypeEnd++;
//Debug.Log ("add"+itemTypeEnd);
ChatContentIndexCallback temp = CreateItem(itemTypeEnd);
float newItemHeight = itemHeightDic.ContainsKey(itemTypeEnd) ? itemHeightDic[itemTypeEnd] : 0;
_verLayoutGroup.padding.bottom = _verLayoutGroup.padding.bottom - (int)newItemHeight > 0 ? _verLayoutGroup.padding.bottom - (int)newItemHeight : 0;//104;//Mathf.FloorToInt (_listItem [_listItem.Count - 1].GetComponent<RectTransform> ().sizeDelta.y);
temp.transform.SetAsLastSibling();
//_listItem.Add (temp);
_listItem.Insert(0, temp);
//totalCount--;
}
}
}
private void MoveTopToBottom()
{
if (itemTypeStart > 0)
{
Vector3[] conner_Local = new Vector3[4];
for (int i = 0; i < 4; i++)
{
conner_Local[i] = itemParent.InverseTransformPoint(conners[i]);
//Debug.Log("conner_Local[i]: " + conner_Local[i]);
}
//float itemY = _listItem.Count > 1 ? _listItem [1].rect.sizeDelta.y/2 : 0;
Vector3 lastItemPos = _listItem.Count > 1 ? _listItem [1].transform.localPosition : Vector3.zero;
//移除下边不在范围的
//Debug.Log(lastItemPos - _scrollRect.transform.position);
if (lastItemPos.y < conner_Local[3].y)
{
if (_listItem.Count > 0)
{
//_scrollRect.content.anchoredPosition = new Vector2(_scrollRect.content.anchoredPosition.x,-600);
_verLayoutGroup.padding.bottom = _verLayoutGroup.padding.bottom + Mathf.FloorToInt(_listItem [0].GetComponent <RectTransform> ().sizeDelta.y);
//移除要保存被移除的item的height
//Debug.Log("_listItem [0]: "+_listItem [0].name);
ChatContentIndexCallback lastItem = _listItem [0];
lastItem.gameObject.SetActive(false);
_listItem.Remove(lastItem);
if (!itemHeightDic.ContainsKey(itemTypeEnd))
{
itemHeightDic.Add(itemTypeEnd, lastItem.GetComponent <RectTransform>().sizeDelta.y);
}
else
{
itemHeightDic[itemTypeEnd] = lastItem.GetComponent <RectTransform>().sizeDelta.y;
}
//_scrollRect.content.anchoredPosition.y+_listItem [0].GetComponent<RectTransform> ().sizeDelta.y);
_pool.Add(lastItem);
itemTypeEnd--;
}
}
//Debug.Log("TopToBottom");0
//增加新的
Vector3 StartItemPos = _listItem.Count > 0 ? _listItem [_listItem.Count - 1].transform.localPosition : Vector3.zero;
// float itemStartY2 = Vector3.Distance (_scrollRect.transform.position, StartItemPos);
if (_listItem.Count > 0)
{
//Debug.Log ("lastItemPos: " + StartItemPos + "_listItem [_listItem.Count - 1].transform.localPosition:" + _listItem [_listItem.Count - 1].transform.localPosition);
//Debug.Log(_listItem [_listItem.Count - 1].name);
}
if (StartItemPos.y < conner_Local[0].y || _listItem.Count == 0)
{
ChatContentIndexCallback temp = CreateItem(itemTypeStart);
temp.transform.SetAsFirstSibling();
itemTypeStart--;
_listItem.Add(temp);
//totalCount--;
}
else
{
//_chatStateType = ChatStateType.empty;
}
}
}
