UIExGridItemCtrlBase GetItem()
{
UIExGridItemCtrlBase item = null;
if (cachedItemList.Count == 0)
{
item = GameObject.Instantiate <UIExGridItemCtrlBase>(templateItem);
item.transform.parent = transform;
item.transform.localScale = Vector3.one;
}
else
{
item = cachedItemList.First.Value;
cachedItemList.RemoveFirst();
}
return(item);
}
//if the last line is visible, add new line after it.
void AddToRight()
{
if (itemList.Count == 0)
{
return;
}
LinkedListNode <UIExGridItemCtrlBase> node = itemList.Last;
if (node.Value.index == dataCount - 1)
{
return;
}
if (node.Value.left < clipRegionRight)
{
Vector3 pos = node.Value.transform.localPosition; //this node must be line end
pos.x += node.Value.halfWidth; //cur item's half width, and next item's half width
pos.y = startPos.y;
for (int i = 1; i <= itemPerCol; i++)
{
UIExGridItemCtrlBase item = GetItem();
item.Init(node.Value.index + i, node.Value.xIndex + 1, i - 1, cellWith, cellHeight, this);
item.SetData(userData);
item.Cache();
item.SetBoxCollider();
if (i == 1)
{
pos.x += item.halfWidth; //cur item's half width, and next item's half width
}
item.transform.localPosition = pos;
pos.y -= cellHeight;
itemList.AddLast(item);
//Debug.Log("add to right " + cachedItemList.Count);
if (item.index == dataCount - 1)
{
break;
}
}
}
}
//if the last line is visible, add new line after it.
void AddToBottom()
{
if (itemList.Count == 0)
{
return;
}
LinkedListNode <UIExGridItemCtrlBase> node = itemList.Last;
if (node.Value.index == dataCount - 1)
{
return;
}
if (node.Value.top > clipRegionBottom)
{
Vector3 pos = node.Value.transform.localPosition; //this node must be line end
pos.x = startPos.x;
pos.y -= node.Value.halfHeight; //cur item's half height, and next item's half height
for (int i = 1; i <= itemPerRow; i++)
{
UIExGridItemCtrlBase item = GetItem();
item.Init(node.Value.index + i, i - 1, node.Value.yIndex + 1, cellWith, cellHeight, this);
item.SetData(userData);
item.Cache();
item.SetBoxCollider();
if (i == 1)
{
pos.y -= item.halfHeight; //cur item's half height, and next item's half height
}
item.transform.localPosition = pos;
pos.x += cellWith;
itemList.AddLast(item);
//Debug.Log("add to bottom " + cachedItemList.Count);
if (item.index == dataCount - 1)
{
break;
}
}
}
}
//if the first line is visible, then add new line after it.
void AddToLeft()
{
if (itemList.Count == 0)
{
return;
}
LinkedListNode <UIExGridItemCtrlBase> node = itemList.First;
if (node.Value.index == 0)
{
return;
}
if (node.Value.right > clipRegionLeft)
{
Vector3 pos = node.Value.transform.localPosition; //this node must be line begin
pos.x -= node.Value.halfWidth; //cur item's half width, and next item's half width
pos.y -= cellHeight * (itemPerCol - 1);
for (int i = 0; i < itemPerCol; i++)
{
UIExGridItemCtrlBase item = GetItem();
item.Init(node.Value.index - i - 1, node.Value.xIndex - 1, itemPerCol - i - 1, cellWith, cellHeight, this);
item.SetData(userData);
item.Cache();
item.SetBoxCollider();
if (i == 0)
{
pos.x -= item.halfWidth;
}
item.transform.localPosition = pos;
pos.y += cellHeight;
itemList.AddFirst(item);
//Debug.Log("add to left " + cachedItemList.Count);
}
}
}
//if the first line is visible, then add new line after it.
void AddToTop()
{
if (itemList.Count == 0)
{
return;
}
LinkedListNode <UIExGridItemCtrlBase> node = itemList.First;
if (node.Value.index == 0)
{
return;
}
if (node.Value.bottom < clipRegionTop)
{
Vector3 pos = node.Value.transform.localPosition; //this node must be line begin
pos.x += cellWith * (itemPerRow - 1);
pos.y += node.Value.halfHeight; //cur item's half height, and next item's half height
for (int i = 0; i < itemPerRow; i++)
{
UIExGridItemCtrlBase item = GetItem();
item.Init(node.Value.index - i - 1, itemPerRow - i - 1, node.Value.yIndex - 1, cellWith, cellHeight, this);
item.SetData(userData);
item.Cache();
item.SetBoxCollider();
if (i == 0)
{
pos.y += item.halfHeight;
}
item.transform.localPosition = pos;
pos.x -= cellWith;
itemList.AddFirst(item);
//Debug.Log("add to top " + cachedItemList.Count);
}
}
}
public void SetGrid_Horz()
{
if (isVariableWidth && itemPerCol != 1)
{
itemPerCol = 1;
Debug.LogError("itemPerCol must be 1, if it is variable width");
}
int xIndex = 0;
int yIndex = 0;
Vector3 pos = Vector3.zero;
bool isChangeLine = false;
for (int i = 0; i < dataCount; i++)
{
UIExGridItemCtrlBase item = GetItem();
item.Init(i, xIndex, yIndex, cellWith, cellHeight, this);
item.SetData(userData);
item.Cache();
item.SetBoxCollider();
//calculate start pos here, because in variable with mode, the first item's width is confirmed just now
if (i == 0)
{
if (pivotHorz == EmPivotHorz.LeftCenter)
{
startPos.x = clipRegionLeft + item.halfWidth;
startPos.y = (itemPerCol - 1) * item.halfHeight; //it is: itemPerCol * cellHeigth*0.5f - cellHeight * 0.5f;
}
else if (pivotHorz == EmPivotHorz.TopLeft)
{
startPos.x = clipRegionLeft + item.halfWidth;
startPos.y = clipRegionTop - item.halfHeight;
}
pos = startPos;
}
if (isChangeLine)
{
pos.x += item.halfWidth; //cur item's half width, and next item's half width
isChangeLine = false;
}
item.transform.localPosition = pos;
itemList.AddLast(item);
yIndex++;
//下一个item的位置
if (yIndex < itemPerCol)
{
pos.y -= item.height;
}
else
{
pos.x += item.halfWidth; //cur item's half width, and next item's half width
pos.y = startPos.y;
xIndex++;
yIndex = 0;
isChangeLine = true;
//if the last item's right is out of clip region, stop show item
if (item.right > clipRegionRight)
{
break;
}
}
}
isFit = false;
if (itemList.Count > 0)
{
UIExGridItemCtrlBase item = itemList.Last.Value;
isFit = item.right <= clipRegionRight && itemList.Count == dataCount;
}
}
void SetGrid_Vert()
{
if (isVariableHeight && itemPerRow != 1)
{
itemPerRow = 1;
Debug.LogError("itemPerRow must be 1, if it is variable height");
}
int xIndex = 0;
int yIndex = 0;
Vector3 pos = Vector3.zero;
bool isChangeLine = false;
for (int i = 0; i < dataCount; i++)
{
UIExGridItemCtrlBase item = GetItem();
item.Init(i, xIndex, yIndex, cellWith, cellHeight, this);
item.SetData(userData);
item.Cache();
item.SetBoxCollider();
//calculate start pos here, because in variable height mode, the first item's height is confirmed now
if (i == 0)
{
if (pivotVert == EmPivotVert.TopCenter)
{
startPos.x = (1 - itemPerRow) * item.halfWidth; //it is: -itemPerRow * cellWith*0.5f + cellWith * 0.5f;
startPos.y = clipRegionTop - item.halfHeight;
}
else if (pivotVert == EmPivotVert.TopLeft)
{
startPos.x = clipRegionLeft + item.halfWidth;
startPos.y = clipRegionTop - item.halfHeight;
}
pos = startPos;
}
if (isChangeLine)
{
pos.y -= item.halfHeight; //cur item's half height, and next item's half height
isChangeLine = false;
}
item.transform.localPosition = pos;
itemList.AddLast(item);
xIndex++;
//下一个item的位置
if (xIndex < itemPerRow)
{
pos.x += item.width;
}
else
{
pos.x = startPos.x;
pos.y -= item.halfHeight; //cur item's half height, and next item's half height
xIndex = 0;
yIndex++;
isChangeLine = true;
//if the last item's bottom is out of clip region, stop show item
if (item.bottom < clipRegionBottom)
{
break;
}
}
}
isFit = false;
if (itemList.Count > 0)
{
UIExGridItemCtrlBase item = itemList.Last.Value;
isFit = item.bottom >= clipRegionBottom && itemList.Count == dataCount;
}
}
