/// <summary>
/// 自动调整多出的那个项的位置
/// </summary>
protected virtual void AutoSetItemState()
{
LoopTime = 0; //防止While循环条件一直成立导致导致死循环
RectTransform lastItem = ContentRectrans.GetChildEX(ContentRectrans.childCount - 1);
RectTransform firstItem = ContentRectrans.GetChildEX(0);
if (Direction == LoopViewShowDirection.Up)
{
//**检查最后一个项是否可见 如果不可见则移动到顶部
while (LoopTime < ContentRectrans.childCount && IsItemVisible(lastItem) == false && IsItemVisible(firstItem))
{
ScrollUpDirection(lastItem, firstItem);
firstItem = ContentRectrans.GetChildEX(0);
lastItem = ContentRectrans.GetChildEX(ContentRectrans.childCount - 1);
++LoopTime;
}//由于快读滑动时候可能一下子滑出超过多个Item项的距离
}
else
{
//***检测第一个项是否可见 如果不可见则移动到末尾
while (LoopTime < ContentRectrans.childCount && IsItemVisible(firstItem) == false && IsItemVisible(lastItem))
{
ScrollDownDirection(firstItem, lastItem);
lastItem = ContentRectrans.GetChildEX(ContentRectrans.childCount - 1);
firstItem = ContentRectrans.GetChildEX(0);
++LoopTime;
}
}
}
/// <summary>
/// 自动调整多出的那个项的位置
/// </summary>
protected virtual void AutoSetItemState()
{
LoopTime = 0;
RectTransform lastItem = ContentRectrans.GetChildEX(ContentRectrans.childCount - 1);
RectTransform firstItem = ContentRectrans.GetChildEX(0);
if (Direction == LoopViewShowDirection.Left)
{
//***如果第一个项可见且最后一个项不可见 则移动最后一个到第一个
while (LoopTime < ContentRectrans.childCount && IsItemVisible(firstItem) && IsItemVisible(lastItem) == false)
{
ScrollLeftDirection(lastItem, firstItem);
lastItem = ContentRectrans.GetChildEX(ContentRectrans.childCount - 1);
firstItem = ContentRectrans.GetChildEX(0);
++LoopTime;
}
}
else
{
//**如果最后一个项可见且第一一个项不可见 则移动第一个到最后以个
while (LoopTime < ContentRectrans.childCount && IsItemVisible(lastItem) && IsItemVisible(firstItem) == false)
{
ScrollRightDirection(firstItem, lastItem);
lastItem = ContentRectrans.GetChildEX(ContentRectrans.childCount - 1);
firstItem = ContentRectrans.GetChildEX(0);
++LoopTime;
}//由于快读滑动时候可能一下子滑出超过多个Item项的距离 所以这里是一个while 循环
}
}
public virtual void RollView(LoopViewShowDirection direction, float endPosX, float tweenTime, bool isAbsDistance = false, System.Action completeRoll = null)
{
if (direction == LoopViewShowDirection.None || (int)direction < (int)LoopViewShowDirection.Left)
{
Debug.LogError("RollViewEx Fail,direction= " + direction);
return;
}
if (IsScrolling)
{
return;
}
if (isAbsDistance == false)
{
endPosX += ContentRectrans.anchoredPosition.x;
}
#region 检测数值 避免由于滑动的太远太快导致视图显示异常 2019/4/23 新增
float offset = endPosX - ContentRectrans.anchoredPosition.x;
if (Mathf.Abs(offset) / tweenTime * Time.deltaTime >= ViewRectHalfSize)
{
Debug.LogError("滑动的距离太远且时间太短 导致视图异常 " + offset);
return;
}
#endregion
if (CheckContentOffsetAvailable(direction, endPosX) == false)
{
return;
}
RollView(direction);
if (ContentRectrans.anchoredPosition.x == endPosX)
{
UpdateItemState();
OnCompleteScrollView();
return;
}
OnBeginScrollView();
if (completeRoll != null)
{
ContentRectrans.DOAnchorPosX(endPosX, tweenTime).OnUpdate(UpdateItemState).OnComplete(() =>
{
OnCompleteScrollView();
if (completeRoll != null)
{
completeRoll.Invoke();
}
}).SetEase(mTweenAnimationCurve);
}
else
{
ContentRectrans.DOAnchorPosX(endPosX, tweenTime).OnUpdate(UpdateItemState).OnComplete(OnCompleteScrollView).SetEase(mTweenAnimationCurve);
}
}
/// <summary>
/// 自动吸附到最近的一个整数节点位置
/// </summary>
protected void AutoAdsorbentItem()
{
if (IsAdsobent == false || ContentRectrans.anchoredPosition.x == 0)
{
OnCompleteScrollView(); //为下一次滑动做准备
AutoSetItemState();
return;
}
float distancePositionX = 0;
float offsetItemDistance = 0, offset = 0;
offsetItemDistance = Mathf.FloorToInt(ContentRectrans.anchoredPosition.x / ItemDistance); //偏移多少个位置，注意负数时候的取整
offset = (ContentRectrans.anchoredPosition.x) % ItemDistance;
distancePositionX = offsetItemDistance * ItemDistance;
if (ContentRectrans.anchoredPosition.x > 0)
{
Direction = LoopViewShowDirection.Left;//这里赋值是为了动画处理完成后的AutoSetItemState
if (Mathf.Abs(offset) > HalfItemDistance)
{
distancePositionX += ItemDistance;
}
//Debug.Log("Left " + offsetItemDistance);
}
else
{
Direction = LoopViewShowDirection.Right;
if (Mathf.Abs(offset) < HalfItemDistance)
{
distancePositionX += ItemDistance; //由于负数FloorToInt是向下取整的，所以这里要特殊处理
}
// Debug.Log("Right " + offsetItemDistance);
}
if (OnItemMovingAct == null)
{
ContentRectrans.DOAnchorPosX(distancePositionX, Time.unscaledDeltaTime * 5).OnComplete(OnCompleteAsdobent);
}
else
{
ContentRectrans.DOAnchorPosX(distancePositionX, Time.unscaledDeltaTime * 5).OnComplete(OnCompleteAsdobent).OnUpdate(OnContentViewTweenUpdate);
}
}
public override void RollView(LoopViewShowDirection direction, float endPosx, float tweenTime, bool isAbsDistance, System.Action completeRoll = null)
{
if (direction == LoopViewShowDirection.None || (int)direction < (int)LoopViewShowDirection.Left)
{
Debug.LogError("RollViewEx Fail,direction= " + direction);
return;
}
if (IsScrolling)
{
return;
}
ContentViewShowDirection = direction;
if (isAbsDistance == false)
{
endPosx += ContentRectrans.anchoredPosition.x;
}
if (CheckContentOffsetAvailable(direction, endPosx) == false)
{
return;
}
// Debug.Log("------------" + endPosx + " " + direction);
if (IsLoopCircleModel)
{
#region 可以循环滑动
RollView(direction);
if (ContentRectrans.anchoredPosition.x == endPosx)
{
UpdateItemState();
OnCompleteScrollView();
return;
}
OnBeginScrollView();
if (completeRoll == null)
{
MoveTweenner = ContentRectrans.DOAnchorPosX(endPosx, tweenTime).OnUpdate(OnUpdateTweenView).OnComplete(OnCompleteScrollView).SetEase(mTweenAnimationCurve);
}
else
{
MoveTweenner = ContentRectrans.DOAnchorPosX(endPosx, tweenTime).OnUpdate(OnUpdateTweenView).OnComplete(() =>
{
OnCompleteScrollView();
completeRoll();
}).SetEase(mTweenAnimationCurve);
}
#endregion
return;
}
#region 数据不足以循环时候只显示一页
float maxOffset = CaculateMaxOffsetDistance(direction);
// Debug.Log("maxOffset=" + maxOffset);
if (mLastRecordContentAnchoePos.x == ContentInitialedPos.x + maxOffset)
{
if (completeRoll != null)
{
completeRoll.Invoke();
}
return; //已经达到边界
}
float realEndPosx = 0;
if (Mathf.Abs(endPosx) < Mathf.Abs(maxOffset))
{
realEndPosx = endPosx;
}
else
{
realEndPosx = maxOffset;
}
if (realEndPosx == ContentRectrans.anchoredPosition.x)
{
if (completeRoll != null)
{
completeRoll.Invoke();
}
return;
}
if (CheckContentOffsetAvailable(direction, realEndPosx) == false)
{
return;
}
IsScrolling = true;
if (completeRoll != null)
{
MoveTweenner = ContentRectrans.DOAnchorPosX(realEndPosx, tweenTime).OnUpdate(OnUpdateTweenView).OnComplete(() =>
{
OnCompleteScrollView();
completeRoll();
}).SetEase(mTweenAnimationCurve);
}
else
{
MoveTweenner = ContentRectrans.DOAnchorPosX(realEndPosx, tweenTime).OnUpdate(OnUpdateTweenView).OnComplete(OnCompleteScrollView).SetEase(mTweenAnimationCurve);
}
#endregion
}
