public static FGLayPosition Create(float spaceDis, bool isVertical = false, int groupNum = 1, float groupDis = 0)
{
FGLayPosition lp = new FGLayPosition();
lp.SetSpace(spaceDis).SetVerical(isVertical).SetGroup(groupNum, groupDis);
return(lp);
}
private void SetStart(int count, int startGroup = 0)
{
mScrollRect = this.gameObject.GetComponent <ScrollRect>();
if (mScrollRect != null)
{
if (mContent == null)
{
//初始化
mContent = mScrollRect.content;
if (mComponent == null)
{
mComponent = mContent.GetChild(0);
}
mStartContenPos = mContent.transform.localPosition;
mStartItemPos = mComponent.transform.position;
//锚点置顶,防止拖动范围变大时,位置发生变化
var tempRect = mComponent.GetComponent <RectTransform>();
tempRect.anchorMin = new Vector2(0, 1);
tempRect.anchorMax = new Vector2(0, 1);
mComponent.transform.position = mStartItemPos;
mStartItemPos = mComponent.transform.localPosition;
m_Rect = new Vector2(tempRect.sizeDelta.x, tempRect.sizeDelta.y);
var tempScroll = mScrollRect.GetComponent <RectTransform>();
m_CenterPosion = Vector3.zero;
m_IsVertical = mScrollRect.vertical;
mGroups = new FGroup <Transform>();
mGroups.Init(mComponent.transform);
var tempPos = mContent.transform.position;
tempPos = mScrollRect.transform.InverseTransformPoint(tempPos);
if (m_IsVertical)
{
m_SpaceDis = m_Rect.y;
m_GroupDis = m_Rect.x;
m_CenterPosion.x = tempPos.x;
}
else
{
m_SpaceDis = m_Rect.x;
m_GroupDis = m_Rect.y;
m_CenterPosion.y = tempPos.y;
}
if (m_IsCenter)
{
var offset = mScrollRect.transform.TransformPoint(m_CenterPosion);
offset = mContent.transform.InverseTransformPoint(offset);
m_DefaultCenterOffset = (m_IsVertical ? (offset.y - mStartItemPos.y) : (offset.x - mStartItemPos.x));
}
m_GLayPosition = FGLayPosition.Create(m_SpaceDis, m_IsVertical, m_GroupNum, m_GroupDis);
m_GLayPosition.SetStart(mStartItemPos);
if (mModeType == ScrollType.Repeat)
{
m_UpdateFun = UpdateRepeat;
}
else if (mModeType == ScrollType.Asy)
{
m_UpdateFun = UpdateAsy;
}
else if (mModeType == ScrollType.Circle)
{
m_UpdateFun = UpdateCircle;
mScrollRect.movementType = ScrollRect.MovementType.Unrestricted;
}
else
{
m_UpdateFun = UpdateNull;
}
}
else
{
//复位
mContent.transform.localPosition = mStartContenPos;
}
m_LastIndex = -99999;//重置
m_LastCenterGroup = -99999;
//配置滑动长度
var scrollTransform = mScrollRect.GetComponent <RectTransform>();
Vector3[] sizeVector3 = new Vector3[4];
scrollTransform.GetLocalCorners(sizeVector3);
float sizeX = Mathf.Abs(sizeVector3[0].x - sizeVector3[2].x);
float sizeY = Mathf.Abs(sizeVector3[0].y - sizeVector3[2].y);
if (m_IsVertical)
{
if (m_CacheLine <= 1)
{
SetCache(Mathf.Clamp((int)(sizeY / m_SpaceDis) + 2, 4, 999999));
}
mContent.sizeDelta = new Vector2(mContent.sizeDelta.x, m_SpaceDis * (1 + (count - 1) / m_GroupNum) + m_SpaceOffset);
}
else
{
if (m_CacheLine <= 1)
{
SetCache(Mathf.Clamp((int)(sizeX / m_SpaceDis) + 2, 4, 999999));
}
mContent.sizeDelta = new Vector2(m_SpaceOffset + m_SpaceDis * (1 + (count - 1) / m_GroupNum), mContent.sizeDelta.y);
}
m_ActionNum = m_GroupNum * m_CacheLine;
int rNum = mModeType == ScrollType.Circle ? m_ActionNum : Mathf.Min(m_ActionNum, count);
mGroups.Refurbish(rNum);
mItems.Clear();
foreach (var k in mGroups)
{
ScrollItem sItem = new ScrollItem(k.gameObject);
mItems.Add(sItem);
}
m_MaxNum = count;
m_MaxLine = 1 + (count - 1) / m_GroupNum;
SelectGroup(startGroup);
if (m_ScrollEx != null)
{
m_ScrollEx.Init(this);
}
}
else
{
Debug.LogError("ScrollRect未找到");
}
}