private void AnalizeMovement(PointerId pointerId, PointerDownElement pointer, Vector2 move, TimeSpan time)
{
Vector2 drag = pointer.Position - pointer.Origin;
if ((pointer.LockedGesture & (GestureType.HorizontalDrag | GestureType.VerticalDrag | GestureType.Hold | GestureType.HoldStart | GestureType.Down)) == GestureType.None)
{
if (Math.Abs(drag.X) > MinDragSize && Math.Abs(drag.X) > Math.Abs(drag.Y))
{
pointer.LockedGesture = GestureType.HorizontalDrag;
move = drag;
}
else if (Math.Abs(drag.Y) > MinDragSize && Math.Abs(drag.Y) > Math.Abs(drag.X))
{
pointer.LockedGesture = GestureType.VerticalDrag;
move = drag;
}
else if (drag.Length() > MinDragSize)
{
pointer.LockedGesture = GestureType.FreeDrag;
move = drag;
}
}
if ((pointer.LockedGesture & GestureType.DragGestures) != GestureType.None)
{
var offset = move;
if (pointer.LockedGesture.HasFlag(GestureType.HorizontalDrag))
{
offset.Y = 0;
}
if (pointer.LockedGesture.HasFlag(GestureType.VerticalDrag))
{
offset.X = 0;
}
var gesture = gesturesPool.Get();
gesture.Init(pointerId, pointer.Origin, pointer.Position, time);
gesture.GestureType = pointer.LockedGesture & GestureType.DragGestures;
gesture.Offset = offset;
Publish(gesture);
if (!pointer.LockedGesture.HasFlag(GestureType.FreeDrag))
{
gesture = gesturesPool.Get();
gesture.Init(pointerId, pointer.Origin, pointer.Position, time);
gesture.GestureType = GestureType.FreeDrag;
gesture.Offset = move;
Publish(gesture);
}
}
}
private void AnalizeHolds(PointerId pointerId, PointerDownElement pointer, TimeSpan time)
{
Vector2 drag = pointer.Position - pointer.Origin;
if (pointer.LockedGesture == GestureType.None && drag.Length() < MinDragSize)
{
TimeSpan elapsed = time - pointer.DownTime;
if (elapsed > HoldStartTime)
{
pointer.LockedGesture = GestureType.HoldStart;
var gesture = gesturesPool.Get();
gesture.Init(pointerId, pointer.Origin, pointer.Position, time);
gesture.GestureType = GestureType.HoldStart;
Publish(gesture);
}
}
else if (pointer.LockedGesture == GestureType.HoldStart)
{
TimeSpan elapsed = time - pointer.DownTime;
if (drag.Length() > MinDragSize)
{
pointer.LockedGesture &= ~GestureType.HoldGestures;
var gesture = gesturesPool.Get();
gesture.Init(pointerId, pointer.Origin, pointer.Position, time);
gesture.GestureType = GestureType.HoldCancel;
Publish(gesture);
return;
}
if (elapsed > HoldTime)
{
pointer.LockedGesture = GestureType.Hold;
var gesture = gesturesPool.Get();
gesture.Init(pointerId, pointer.Origin, pointer.Position, time);
gesture.GestureType = GestureType.Hold;
Publish(gesture);
}
}
}
