void InitItemPool()
{
foreach (StaggeredGridItemPrefabConfData data in mItemPrefabDataList)
{
if (data.mItemPrefab == null)
{
Debug.LogError("A item prefab is null ");
continue;
}
string prefabName = data.mItemPrefab.name;
if (mItemPoolDict.ContainsKey(prefabName))
{
Debug.LogError("A item prefab with name " + prefabName + " has existed!");
continue;
}
RectTransform rtf = data.mItemPrefab.GetComponent <RectTransform>();
if (rtf == null)
{
Debug.LogError("RectTransform component is not found in the prefab " + prefabName);
continue;
}
AdjustAnchor(rtf);
AdjustPivot(rtf);
LoopStaggeredGridViewItem tItem = data.mItemPrefab.GetComponent <LoopStaggeredGridViewItem>();
if (tItem == null)
{
data.mItemPrefab.AddComponent <LoopStaggeredGridViewItem>();
}
StaggeredGridItemPool pool = new StaggeredGridItemPool();
pool.Init(data.mItemPrefab, data.mPadding, data.mInitCreateCount, mContainerTrans);
mItemPoolDict.Add(prefabName, pool);
mItemPoolList.Add(pool);
}
}
public LoopStaggeredGridViewItem GetItem()
{
mCurItemIdCount++;
LoopStaggeredGridViewItem tItem = null;
if (mTmpPooledItemList.Count > 0)
{
int count = mTmpPooledItemList.Count;
tItem = mTmpPooledItemList[count - 1];
mTmpPooledItemList.RemoveAt(count - 1);
tItem.gameObject.SetActive(true);
}
else
{
int count = mPooledItemList.Count;
if (count == 0)
{
tItem = CreateItem();
}
else
{
tItem = mPooledItemList[count - 1];
mPooledItemList.RemoveAt(count - 1);
tItem.gameObject.SetActive(true);
}
}
tItem.Padding = mPadding;
tItem.ItemId = mCurItemIdCount;
return(tItem);
}
public LoopStaggeredGridViewItem GetNewItemByGroupAndIndex(int groupIndex, int indexInGroup)
{
if (indexInGroup < 0)
{
return(null);
}
if (mItemTotalCount == 0)
{
return(null);
}
LoopStaggeredGridViewItem newItem = null;
int index = 0;
List <int> mItemIndexMap = mItemGroupList[groupIndex].ItemIndexMap;
int count = mItemIndexMap.Count;
if (count > indexInGroup)
{
index = mItemIndexMap[indexInGroup];
newItem = mOnGetItemByItemIndex(this, index);
if (newItem == null)
{
return(null);
}
newItem.StartPosOffset = mLayoutParam.mCustomColumnOrRowOffsetArray[groupIndex];
newItem.ItemIndexInGroup = indexInGroup;
newItem.ItemIndex = index;
newItem.ItemCreatedCheckFrameCount = mListUpdateCheckFrameCount;
return(newItem);
}
if (count != indexInGroup)
{
return(null);
}
int curMaxCreatedItemIndexCount = mItemIndexDataList.Count;
if (curMaxCreatedItemIndexCount >= mItemTotalCount)
{
return(null);
}
index = curMaxCreatedItemIndexCount;
newItem = mOnGetItemByItemIndex(this, index);
if (newItem == null)
{
return(null);
}
mItemIndexMap.Add(index);
ItemIndexData indexData = new ItemIndexData();
indexData.mGroupIndex = groupIndex;
indexData.mIndexInGroup = indexInGroup;
mItemIndexDataList.Add(indexData);
newItem.StartPosOffset = mLayoutParam.mCustomColumnOrRowOffsetArray[groupIndex];
newItem.ItemIndexInGroup = indexInGroup;
newItem.ItemIndex = index;
newItem.ItemCreatedCheckFrameCount = mListUpdateCheckFrameCount;
return(newItem);
}
public void Init(GameObject prefabObj, float padding, int createCount, RectTransform parent)
{
mPrefabObj = prefabObj;
mPrefabName = mPrefabObj.name;
mInitCreateCount = createCount;
mPadding = padding;
mItemParent = parent;
mPrefabObj.SetActive(false);
for (int i = 0; i < mInitCreateCount; ++i)
{
LoopStaggeredGridViewItem tViewItem = CreateItem();
RecycleItemReal(tViewItem);
}
}
public LoopStaggeredGridViewItem CreateItem()
{
GameObject go = GameObject.Instantiate <GameObject>(mPrefabObj, Vector3.zero, Quaternion.identity, mItemParent);
go.SetActive(true);
RectTransform rf = go.GetComponent <RectTransform>();
rf.localScale = Vector3.one;
rf.anchoredPosition3D = Vector3.zero;
rf.localEulerAngles = Vector3.zero;
LoopStaggeredGridViewItem tViewItem = go.GetComponent <LoopStaggeredGridViewItem>();
tViewItem.ItemPrefabName = mPrefabName;
tViewItem.StartPosOffset = 0;
return(tViewItem);
}
public void RecycleItemTmp(LoopStaggeredGridViewItem item)
{
if (item == null)
{
return;
}
if (string.IsNullOrEmpty(item.ItemPrefabName))
{
return;
}
StaggeredGridItemPool pool = null;
if (mItemPoolDict.TryGetValue(item.ItemPrefabName, out pool) == false)
{
return;
}
pool.RecycleItem(item);
}
//This method is used to get a new item, and the new item is a clone from the prefab named itemPrefabName.
//This method is usually used in onGetItemByItemIndex.
public LoopStaggeredGridViewItem NewListViewItem(string itemPrefabName)
{
StaggeredGridItemPool pool = null;
if (mItemPoolDict.TryGetValue(itemPrefabName, out pool) == false)
{
return(null);
}
LoopStaggeredGridViewItem item = pool.GetItem();
RectTransform rf = item.GetComponent <RectTransform>();
rf.SetParent(mContainerTrans);
rf.localScale = Vector3.one;
rf.anchoredPosition3D = Vector3.zero;
rf.localEulerAngles = Vector3.zero;
item.ParentListView = this;
return(item);
}
void RecycleItemReal(LoopStaggeredGridViewItem item)
{
item.gameObject.SetActive(false);
mPooledItemList.Add(item);
}
public void RecycleItem(LoopStaggeredGridViewItem item)
{
mTmpPooledItemList.Add(item);
}