public LinkDrawing(ILinkableDrawing source, ILinkableDrawing destination,
float lineWidth, float selectedLineWidth, LinkStyle linkStyle)
{
this.color = Color.Black;
this.lineWidth = lineWidth;
this.selectedLineWidth = selectedLineWidth;
this.linkStyle = linkStyle;
this.sourcePoint = new CardinalLinkPoint(this);
this.destinationPoint = new CardinalLinkPoint(this);
this.sourceDrawing = source;
this.destinationDrawing = destination;
this.direction = new LinkDirection(CardinalDirection.None, CardinalDirection.None);
}
private void OnLinkDirectionChanged(LinkDrawing link, LinkDirection previousDirection, LinkDirection newDirection)
{
IDrawing sourceDrawing = link.SourceDrawing;
IDrawing destinationDrawing = link.DestinationDrawing;
link.Invalidated = true;
NSWEDrawing source = virtualMapping[sourceDrawing];
NSWEDrawing destination = virtualMapping[destinationDrawing];
switch (previousDirection.From) {
case CardinalDirection.None:
source.LinkPointsNone.Remove(link.SourcePoint);
source.LinksNone.Remove(link);
break;
case CardinalDirection.North:
source.LinkPointsSouth.Remove(link.SourcePoint);
source.LinksSouth.Remove(link);
break;
case CardinalDirection.South:
source.LinkPointsNorth.Remove(link.SourcePoint);
source.LinksNorth.Remove(link);
break;
case CardinalDirection.West:
source.LinkPointsEast.Remove(link.SourcePoint);
source.LinksEast.Remove(link);
break;
case CardinalDirection.East:
source.LinkPointsWest.Remove(link.SourcePoint);
source.LinksWest.Remove(link);
break;
}
switch (previousDirection.To) {
case CardinalDirection.None:
destination.LinkPointsNone.Remove(link.DestinationPoint);
destination.LinksNone.Remove(link);
break;
case CardinalDirection.South:
destination.LinkPointsNorth.Remove(link.DestinationPoint);
destination.LinksNorth.Remove(link);
break;
case CardinalDirection.North:
destination.LinkPointsSouth.Remove(link.DestinationPoint);
destination.LinksSouth.Remove(link);
break;
case CardinalDirection.East:
destination.LinkPointsWest.Remove(link.DestinationPoint);
destination.LinksWest.Remove(link);
break;
case CardinalDirection.West:
destination.LinkPointsEast.Remove(link.DestinationPoint);
destination.LinksEast.Remove(link);
break;
}
switch (newDirection.From) {
case CardinalDirection.None:
source.LinkPointsNone.Add(link.SourcePoint);
source.LinksNone.Add(link);
break;
case CardinalDirection.North:
source.LinkPointsSouth.Add(link.SourcePoint);
source.LinksSouth.Add(link);
break;
case CardinalDirection.South:
source.LinkPointsNorth.Add(link.SourcePoint);
source.LinksNorth.Add(link);
break;
case CardinalDirection.West:
source.LinkPointsEast.Add(link.SourcePoint);
source.LinksEast.Add(link);
break;
case CardinalDirection.East:
source.LinkPointsWest.Add(link.SourcePoint);
source.LinksWest.Add(link);
break;
}
switch (newDirection.To) {
case CardinalDirection.None:
destination.LinkPointsNone.Add(link.DestinationPoint);
destination.LinksNone.Add(link);
break;
case CardinalDirection.North:
destination.LinkPointsSouth.Add(link.DestinationPoint);
destination.LinksSouth.Add(link);
break;
case CardinalDirection.South:
destination.LinkPointsNorth.Add(link.DestinationPoint);
destination.LinksNorth.Add(link);
break;
case CardinalDirection.West:
destination.LinkPointsEast.Add(link.DestinationPoint);
destination.LinksEast.Add(link);
break;
case CardinalDirection.East:
destination.LinkPointsWest.Add(link.DestinationPoint);
destination.LinksWest.Add(link);
break;
}
if (this.LinkDirectionChangedEvent != null)
LinkDirectionChangedEvent(link, new LinkDirectionChangedArg(link, newDirection, link.Direction));
}
public LinkDirectionChangedArg(LinkDrawing link, LinkDirection newDirection, LinkDirection prevDirection)
{
this.link = link;
this.newDirection = newDirection;
this.prevDirection = prevDirection;
}
