private void SetElement(float distance2Top, ElementPositionInfo elementPositionInfo)
{
if (distance2Top >= this.visualRange.x && distance2Top <= this.visualRange.y && !elementPositionInfo.Visible)
{
if (elementPositionInfo.Invisible)
{
ElementBuffer buffer = GetUsableBuffer(elementPositionInfo.ElementIndex);
if (buffer != null)
{
buffer.Use(elementPositionInfo);
buffer.SetSize(this.GetElementSize(elementPositionInfo.ElementIndex));
this.Adapter.FillElementData(buffer, elementPositionInfo.ElementIndex);
}
}
else if (elementPositionInfo.VisibleAndNeedRefresh)
{
ElementBuffer buffer = elementPositionInfo.Buffer;
if (buffer != null)
{
buffer.Use(elementPositionInfo);
buffer.SetSize(this.GetElementSize(elementPositionInfo.ElementIndex));
this.Adapter.FillElementData(buffer, elementPositionInfo.ElementIndex);
}
}
}
}
public virtual void GotoIndex(int index, float duration = 0.5f, Action onComplete = null)
{
ElementPositionInfo element = null;
if (this.elementPositionInfoMapper.TryGetValue(index, out element))
{
if (this.Vertical)
{
float height = -element.LocalPos.y;
if (duration > 0)
{
DOTween.Sequence().Append(content.DOLocalMoveY(height, duration))
.AppendCallback(() =>
{
if (onComplete != null)
{
onComplete();
}
}).Play();
}
else
{
content.localPosition = new Vector3(content.localPosition.x, height, content.localPosition.z);
this.FillData();
if (onComplete != null)
{
onComplete();
}
}
}
else if (this.Horizontal)
{
float width = -element.LocalPos.x;
if (duration > 0)
{
DOTween.Sequence().Append(content.DOLocalMoveX(width, duration))
.AppendCallback(() =>
{
if (onComplete != null)
{
onComplete();
}
}).Play();
}
else
{
content.localPosition = new Vector3(width, content.localPosition.y, content.localPosition.z);
this.FillData();
if (onComplete != null)
{
onComplete();
}
}
}
}
}
private void AddElementPositionInfo(int elementIndex, Vector3 localPos)
{
ElementPositionInfo positionInfo = null;
if (this.elementPositionInfoMapper.TryGetValue(elementIndex, out positionInfo))
{
positionInfo.LocalPos = localPos;
}
else
{
this.elementPositionInfoMapper.Add(elementIndex, new ElementPositionInfo(elementIndex, localPos));
}
}
public void Use(ElementPositionInfo elementPositionInfo)
{
this.isUsing = true;
this.positionInfo = elementPositionInfo;
elementPositionInfo.SetBuffer(this);
elementPositionInfo.State = ElementState.visible;
this.elementIndex = elementPositionInfo.ElementIndex;
this.bufferGameObject.SetActive(true);
this.rectTransform.localPosition = elementPositionInfo.LocalPos;
this.bufferGameObject.name = elementPositionInfo.ElementIndex.ToString();
this.rectTransform.SetSiblingIndex(elementPositionInfo.ElementIndex);
}
private void FillData(int currentIndex = -1)
{
RecycleBuffers();
currentIndex = currentIndex == -1 ? this.GetCurrentIndex() : currentIndex;
if (this.Vertical)
{
float currentPos = content.localPosition.y;
float distance2Top = 0f;
for (int i = currentIndex; i >= 0 && distance2Top >= this.visualRange.x && distance2Top <= this.visualRange.y; i--)
{
ElementPositionInfo elementPositionInfo = this.elementPositionInfoMapper[i];
distance2Top = -elementPositionInfo.LocalPos.y - currentPos;
SetElement(distance2Top, elementPositionInfo);
}
distance2Top = 0f;
for (int i = currentIndex; i < this.elementPositionInfoMapper.Count && distance2Top >= this.visualRange.x && distance2Top <= this.visualRange.y; i++)
{
ElementPositionInfo elementPositionInfo = this.elementPositionInfoMapper[i];
distance2Top = -elementPositionInfo.LocalPos.y - currentPos;
SetElement(distance2Top, elementPositionInfo);
}
}
else if (this.Horizontal)
{
float currentPos = content.localPosition.x;
float distance2Top = 0f;
for (int i = currentIndex; i >= 0 && distance2Top >= this.visualRange.x && distance2Top <= this.visualRange.y; i--)
{
ElementPositionInfo elementPositionInfo = this.elementPositionInfoMapper[i];
distance2Top = elementPositionInfo.LocalPos.x + currentPos;
SetElement(distance2Top, elementPositionInfo);
}
distance2Top = 0f;
for (int i = currentIndex; i < this.elementPositionInfoMapper.Count && distance2Top >= this.visualRange.x && distance2Top <= this.visualRange.y; i++)
{
ElementPositionInfo elementPositionInfo = this.elementPositionInfoMapper[i];
distance2Top = elementPositionInfo.LocalPos.x + currentPos;
SetElement(distance2Top, elementPositionInfo);
}
}
}
