/** override functions */
public virtual bool TouchBegan(CCTouch pTouch, CCEvent touchEvent)
{
if (!Visible)
{
return(false);
}
var frame = ViewRect;
//dispatcher does not know about clipping. reject touches outside visible bounds.
if (touches.Count > 2 ||
IsTouchMoved ||
!frame.ContainsPoint(container.Layer.ScreenToWorldspace(pTouch.LocationOnScreen)))
{
return(false);
}
if (!touches.Contains(pTouch))
{
touches.Add(pTouch);
}
if (touches.Count == 1)
{
// scrolling
touchPoint = Layer.ScreenToWorldspace(pTouch.LocationOnScreen);
IsTouchMoved = false;
Dragging = true; //Dragging started
scrollDistance = CCPoint.Zero;
touchLength = 0.0f;
}
else if (touches.Count == 2)
{
touchPoint = CCPoint.Midpoint(Layer.ScreenToWorldspace(touches[0].LocationOnScreen), Layer.ScreenToWorldspace(touches[1].LocationOnScreen));
touchLength = CCPoint.Distance(container.Layer.ScreenToWorldspace(touches[0].LocationOnScreen), container.Layer.ScreenToWorldspace(touches[1].LocationOnScreen));
Dragging = false;
}
return(true);
}
public virtual void TouchMoved(CCTouch touch, CCEvent touchEvent)
{
if (!Visible)
{
return;
}
if (touches.Contains(touch))
{
if (touches.Count == 1 && Dragging)
{ // scrolling
CCPoint moveDistance, newPoint; //, maxInset, minInset;
float newX, newY;
var frame = ViewRect;
newPoint = Layer.ScreenToWorldspace(touches[0].LocationOnScreen);
moveDistance = newPoint - touchPoint;
float dis = 0.0f;
if (Direction == CCScrollViewDirection.Vertical)
{
dis = moveDistance.Y;
}
else if (Direction == CCScrollViewDirection.Horizontal)
{
dis = moveDistance.X;
}
else
{
dis = (float)Math.Sqrt(moveDistance.X * moveDistance.X + moveDistance.Y * moveDistance.Y);
}
if (!IsTouchMoved && Math.Abs(ConvertDistanceFromPointToInch(dis)) < MOVE_INCH)
{
//CCLOG("Invalid movement, distance = [%f, %f], disInch = %f", moveDistance.x, moveDistance.y);
return;
}
if (!IsTouchMoved)
{
moveDistance = CCPoint.Zero;
}
touchPoint = newPoint;
IsTouchMoved = true;
if (frame.ContainsPoint(touchPoint))
{
switch (Direction)
{
case CCScrollViewDirection.Vertical:
moveDistance = new CCPoint(0.0f, moveDistance.Y);
break;
case CCScrollViewDirection.Horizontal:
moveDistance = new CCPoint(moveDistance.X, 0.0f);
break;
default:
break;
}
newX = container.Position.X + moveDistance.X;
newY = container.Position.Y + moveDistance.Y;
scrollDistance = moveDistance;
SetContentOffset(new CCPoint(newX, newY));
}
}
else if (touches.Count == 2 && !Dragging)
{
float len = CCPoint.Distance(Layer.ScreenToWorldspace(touches[0].LocationOnScreen),
Layer.ScreenToWorldspace(touches[1].LocationOnScreen));
ZoomScale = ZoomScale * len / touchLength;
}
}
}