void MoveScrollerPivot(Vector2 delta)
{
Vector2 newDelta = m_BackgroundLayout.ScreenDeltaToLayoutSpace(delta);
Vector3 curPos = m_ScrollPivot.transform.localPosition;
//if(Mathf.Abs(delta.x) > 0)
// Debug.Log("delta: " + delta.x + " layoutDelta: " + newDelta.x);
curPos.x += newDelta.x;
curPos.y += newDelta.y;
curPos.x = Mathf.Clamp(curPos.x, m_ScrollLimitHardMin, m_ScrollLimitHardMax);
m_ScrollPivot.transform.localPosition = curPos;
m_ScrollPivot.SetModify(true);
}