/// <summary>
/// 清理可复用渲染格
/// 不需要public
/// </summary>
void ClearAllListRenderDr()
{
if (mList_items != null)
{
int len = mList_items.Count;
for (int i = 0; i < len; ++i)
{
VirtualListItem item = mList_items[i];
item.DRect = null;
}
}
}
/// <summary>
/// 获得待渲染的渲染器
/// </summary>
/// <returns></returns>
VirtualListItem GetNullDynmicItem()
{
int len = mList_items.Count;
for (int i = 0; i < len; ++i)
{
VirtualListItem item = mList_items[i];
if (item.DRect == null)
{
return(item);
}
}
throw new Exception("Error");
}
private void CalculatePosistion(VirtualListItem item)
{
float tempPosY = deltaPos.y + item.transform.localPosition.y;
Vector3 tempPos = item.transform.localPosition;
item.transform.localPosition = new Vector3(item.transform.localPosition.x, tempPosY, item.transform.localPosition.z);
if (tempPosY < LastPos.y * 1.5)
{
if (HasEdge && virtualListItems.First.Value.Data.CurIndex - 1 < 0)
{
return;
}
int index = virtualListItems.First.Value.Data.CurIndex - 1;
if (index < 0)
{
index += DataList.Count;
}
LinkedListNode <VirtualListItem> tempNode = virtualListItems.Last;
tempNode.Value.transform.localPosition = new Vector3(virtualListItems.First.Value.transform.localPosition.x,
virtualListItems.First.Value.transform.localPosition.y + item.SizeY,
virtualListItems.First.Value.transform.localPosition.z);
virtualListItems.RemoveLast();
tempNode.Value.BindData(DataList[index]);
virtualListItems.AddFirst(tempNode);
}
if (tempPosY > TopPos.y * 1.5)
{
if (HasEdge && virtualListItems.Last.Value.Data.CurIndex + 1 > DataList.Count - 1)
{
return;
}
int index = virtualListItems.Last.Value.Data.CurIndex + 1;
if (index > DataList.Count - 1)
{
index = index - (DataList.Count);
}
LinkedListNode <VirtualListItem> tempNode = virtualListItems.First;
tempNode.Value.transform.position = new Vector3(virtualListItems.Last.Value.transform.position.x,
virtualListItems.Last.Value.transform.position.y - item.SizeY,
virtualListItems.Last.Value.transform.position.z);
virtualListItems.RemoveFirst();
tempNode.Value.BindData(DataList[index]);
virtualListItems.AddLast(tempNode);
}
}
/// <summary>
/// 通过动态格子获得动态渲染器
/// </summary>
/// <param name="rect"></param>
/// <returns></returns>
VirtualListItem GetDynmicItem(DynamicRect rect)
{
int len = mList_items.Count;
for (int i = 0; i < len; ++i)
{
VirtualListItem item = mList_items[i];
if (item.DRect == null)
{
continue;
}
if (rect.Index == item.DRect.Index)
{
return(item);
}
}
return(null);
}
public void Start()
{
curCenterPos.y += Content.rect.height / 2;
LastPos.y = -200;
Debug.Log(LastPos.y);
originCenterPos.y = Content.rect.height / 2;
VirtualRow = CanViewNum + 1;
TopPos.y = 200;
virtualListItems = new LinkedList <VirtualListItem>();
InitData();
for (int i = 0; i < VirtualRow; i++)
{
VirtualListItem temp = MonoBehaviour.Instantiate(ListItemPrefab, Content).GetComponent <VirtualListItem>();
virtualListItems.AddLast(temp);
temp.Init(this);
temp.SetIndex(i, 1);
temp.BindData(DataList[i]);
}
}
/// <summary>
/// 初始化渲染脚本
/// </summary>
public virtual void InitRendererList(VirtualListItem.OnSelect OnSelect, VirtualListItem.OnUpdateData OnUpdate)
{
if (mHasInited)
{
return;
}
//转换器
mRectTransformContainer = transform as RectTransform;
//获得蒙版尺寸
mMaskSize = transform.parent.GetComponent <RectTransform>().sizeDelta;
mScrollRect = transform.parent.GetComponent <ScrollRect>();
//通过蒙版尺寸和格子尺寸计算需要的渲染器个数
mRendererCount = ColumnCount * (Mathf.CeilToInt(mMaskSize.y / GetBlockSizeY()) + 1);
_UpdateDynmicRects(mRendererCount);
mList_items = new List <VirtualListItem>();
for (int i = 0; i < mRendererCount; ++i)
{
GameObject child = GameObject.Instantiate(RenderGO);
child.transform.SetParent(transform);
child.transform.localRotation = Quaternion.identity;
child.transform.localScale = Vector3.one;
child.layer = gameObject.layer;
VirtualListItem dfItem = child.GetComponent <VirtualListItem>();
if (dfItem == null)
{
throw new Exception("Render must extend DynamicInfinityItem");
}
mList_items.Add(dfItem);
mList_items[i].DRect = mDict_dRect[i];
mList_items[i].OnSelectHandler = OnSelect;
mList_items[i].OnUpdateDataHandler = OnUpdate;
child.SetActive(false);
_UpdateChildTransformPos(child, i);
}
_SetListRenderSize(mRendererCount);
mHasInited = true;
}
protected void UpdateRender()
{
mRectMask.y = -mMaskSize.y - mRectTransformContainer.anchoredPosition.y;
Dictionary <int, DynamicRect> inOverlaps = new Dictionary <int, DynamicRect>();
foreach (DynamicRect dR in mDict_dRect.Values)
{
if (dR.Overlaps(mRectMask))
{
inOverlaps.Add(dR.Index, dR);
}
}
int len = mList_items.Count;
for (int i = 0; i < len; ++i)
{
VirtualListItem item = mList_items[i];
if (item.DRect != null && !inOverlaps.ContainsKey(item.DRect.Index))
{
item.DRect = null;
}
}
foreach (DynamicRect dR in inOverlaps.Values)
{
if (GetDynmicItem(dR) == null)
{
VirtualListItem item = GetNullDynmicItem();
item.DRect = dR;
_UpdateChildTransformPos(item.gameObject, dR.Index);
if (mDataProviders != null && dR.Index < mDataProviders.Count)
{
item.SetData(mDataProviders[dR.Index]);
}
}
}
}
