public void Recenter()
{
if (mScrollView == null)
{
mScrollView = NGUITools.FindInParents <UIScrollView>(gameObject);
if (mScrollView == null)
{
Debug.LogWarning(GetType() + " requires " + typeof(UIScrollView) + " on a parent object in order to work", this);
enabled = false;
return;
}
else
{
if (mScrollView)
{
mScrollView.centerOnChild = this;
mScrollView.onDragFinished += OnDragFinished;
}
if (mScrollView.horizontalScrollBar != null)
{
mScrollView.horizontalScrollBar.onDragFinished += OnDragFinished;
}
if (mScrollView.verticalScrollBar != null)
{
mScrollView.verticalScrollBar.onDragFinished += OnDragFinished;
}
}
}
if (mScrollView.panel == null)
{
return;
}
Transform trans = transform;
if (trans.childCount == 0)
{
return;
}
// Calculate the panel's center in world coordinates
Vector3[] corners = mScrollView.panel.worldCorners;
Vector3 panelCenter = (corners[2] + corners[0]) * 0.5f;
// Offset this value by the momentum
Vector3 momentum = mScrollView.currentMomentum * mScrollView.momentumAmount;
Vector3 moveDelta = NGUIMath.SpringDampen(ref momentum, 9f, 2f);
Vector3 pickingPoint = panelCenter - moveDelta * 0.01f; // Magic number based on what "feels right"
float min = float.MaxValue;
Transform closest = null;
int index = 0;
int ignoredIndex = 0;
// Determine the closest child
for (int i = 0, imax = trans.childCount, ii = 0; i < imax; ++i)
{
Transform t = trans.GetChild(i);
if (!t.gameObject.activeInHierarchy)
{
continue;
}
float sqrDist = Vector3.SqrMagnitude(t.position - pickingPoint);
if (sqrDist < min)
{
min = sqrDist;
closest = t;
index = i;
ignoredIndex = ii;
}
++ii;
}
// If we have a touch in progress and the next page threshold set
if (nextPageThreshold > 0f && UICamera.currentTouch != null)
{
// If we're still on the same object
if (mCenteredObject != null && mCenteredObject.transform == trans.GetChild(index))
{
Vector3 totalDelta = UICamera.currentTouch.totalDelta;
totalDelta = transform.rotation * totalDelta;
float delta = 0f;
switch (mScrollView.movement)
{
case UIScrollView.Movement.Horizontal:
{
delta = totalDelta.x;
break;
}
case UIScrollView.Movement.Vertical:
{
delta = totalDelta.y;
break;
}
default:
{
delta = totalDelta.magnitude;
break;
}
}
if (Mathf.Abs(delta) > nextPageThreshold)
{
UIGrid grid = GetComponent <UIGrid>();
CLUILoopGrid loopGrid = GetComponent <CLUILoopGrid>(); // add by chenbin
if (loopGrid == null)
{
if (grid != null && grid.sorting != UIGrid.Sorting.None)
{
List <Transform> list = grid.GetChildList();
if (delta > nextPageThreshold)
{
// Next page
if (ignoredIndex > 0)
{
closest = list [ignoredIndex - 1];
}
else
{
closest = (GetComponent <UIWrapContent> () == null) ? list [0] : list [list.Count - 1];
}
}
else if (delta < -nextPageThreshold)
{
// Previous page
if (ignoredIndex < list.Count - 1)
{
closest = list [ignoredIndex + 1];
}
else
{
closest = (GetComponent <UIWrapContent> () == null) ? list [list.Count - 1] : list [0];
}
}
}
else
{
Debug.LogWarning("Next Page Threshold requires a sorted UIGrid in order to work properly", this);
}
#region add by chenbin
}
else
{
int _index = NumEx.stringToInt(closest.name);
if (delta > nextPageThreshold)
{
// Next page
if (_index > 0)
{
_index--;
closest = trans.Find(NumEx.nStrForLen(_index, 6));
}
}
else if (delta < -nextPageThreshold)
{
// Previous page
if (_index < loopGrid.list.Count - 1)
{
_index++;
closest = trans.Find(NumEx.nStrForLen(_index, 6));
}
}
}
#endregion
}
}
}
CenterOn(closest, panelCenter);
}
