public override void TouchMoved(CCTouch touch, CCEvent pEvent)
{
if (!Visible)
{
return;
}
if (m_pTouches.Contains(touch))
{
if (m_pTouches.Count == 1 && m_bDragging)
{
// scrolling
m_bTouchMoved = true;
CCPoint frameOriginal = Parent.ConvertToWorldSpace(Position);
var frame = new CCRect(frameOriginal.X, frameOriginal.Y, m_tViewSize.Width, m_tViewSize.Height);
CCPoint newPoint = ConvertTouchToNodeSpace(m_pTouches[0]);
CCPoint moveDistance = CCPointExtension.Subtract(newPoint, m_tTouchPoint);
m_tTouchPoint = newPoint;
if (frame.ContainsPoint(ConvertToWorldSpace(newPoint)))
{
switch (m_eDirection)
{
case CCScrollViewDirection.Vertical:
moveDistance = new CCPoint(0.0f, moveDistance.Y);
break;
case CCScrollViewDirection.Horizontal:
moveDistance = new CCPoint(moveDistance.X, 0.0f);
break;
}
m_pContainer.Position = CCPointExtension.Add(m_pContainer.Position, moveDistance);
CCPoint maxInset = m_fMaxInset;
CCPoint minInset = m_fMinInset;
//check to see if offset lies within the inset bounds
float newX = Math.Min(m_pContainer.Position.X, maxInset.X);
newX = Math.Max(newX, minInset.X);
float newY = Math.Min(m_pContainer.Position.Y, maxInset.Y);
newY = Math.Max(newY, minInset.Y);
m_tScrollDistance = CCPointExtension.Subtract(moveDistance,
new CCPoint(newX - m_pContainer.Position.X, newY - m_pContainer.Position.Y));
SetContentOffset(new CCPoint(newX, newY), false);
}
}
else if (m_pTouches.Count == 2 && !m_bDragging)
{
float len = CCPointExtension.Distance(m_pContainer.ConvertTouchToNodeSpace(m_pTouches[0]),
m_pContainer.ConvertTouchToNodeSpace(m_pTouches[1]));
ZoomScale = ZoomScale * len / m_fTouchLength;
}
}
}
/** override functions */
// optional
public override bool TouchBegan(CCTouch pTouch, CCEvent pEvent)
{
if (!Visible)
{
return false;
}
CCPoint frameOriginal = Parent.ConvertToWorldSpace(Position);
var frame = new CCRect(frameOriginal.X, frameOriginal.Y, m_tViewSize.Width, m_tViewSize.Height);
//dispatcher does not know about clipping. reject touches outside visible bounds.
if (m_pTouches.Count > 2 ||
m_bTouchMoved ||
!frame.ContainsPoint(m_pContainer.ConvertToWorldSpace(m_pContainer.ConvertTouchToNodeSpace(pTouch))))
{
return false;
}
if (!m_pTouches.Contains(pTouch))
{
m_pTouches.Add(pTouch);
}
if (m_pTouches.Count == 1)
{
// scrolling
m_tTouchPoint = ConvertTouchToNodeSpace(pTouch);
m_bTouchMoved = false;
m_bDragging = true; //dragging started
m_tScrollDistance = new CCPoint(0.0f, 0.0f);
m_fTouchLength = 0.0f;
}
else if (m_pTouches.Count == 2)
{
m_tTouchPoint = CCPointExtension.Midpoint(ConvertTouchToNodeSpace(m_pTouches[0]),
ConvertTouchToNodeSpace(m_pTouches[1]));
m_fTouchLength = CCPointExtension.Distance(m_pContainer.ConvertTouchToNodeSpace(m_pTouches[0]),
m_pContainer.ConvertTouchToNodeSpace(m_pTouches[1]));
m_bDragging = false;
}
return true;
}
