Point getAnchorPointCenter(IDesignAnchorPoint ap)
{
double x = Canvas.GetLeft(this) + Canvas.GetLeft(ap.ParentConnectControl.getControl()) + ap.ParentConnectControl.getControl().Width / 2;
double y = Canvas.GetTop(this) + Canvas.GetTop(ap.ParentConnectControl.getControl()) + ap.ParentConnectControl.getControl().Height / 2;
return(new Point(x, y));
}
public void DeleteRelation(IDesignRelation IRelation)//删除任何指定的关联
{
for (int i = 0; i < AnchorPointList.Count; i++)
{
IDesignAnchorPoint dap = AnchorPointList[i];
dap.RemoveRelation(IRelation);
}
}
public void AddRelationAsTargetObject(IDesignRelation IRelation)
{
IDesignAnchorPoint Anchor = getNearAnchorPoint(IRelation.EndPoint);
if (Anchor == null)
{
return;
}
Anchor.AddInRelation(IRelation);
}
public void AddRelationAsSourceObject(IDesignRelation IRelation)
{
IDesignAnchorPoint Anchor = getNearAnchorPoint(IRelation.StartPoint);
if (Anchor == null)
{
return;
}
Anchor.AddOutRelation(IRelation);
}
void DeseignCanvas_DesignPointerReleased(object sender, PointerRoutedEventArgs e)
{
HideDesignLine();
DeseignCanvas.PointerMoved -= new PointerEventHandler(DeseignCanvas_DesignPointerMoved);
DeseignCanvas.PointerReleased -= new PointerEventHandler(DeseignCanvas_DesignPointerReleased);
IDesignRelation l = null;
if ((StartAnchor != null) && (EndAnchor != null) && (EndAnchor != StartAnchor))
{
l = null;
if (!getNewRelationControlByID.Equals(null))//新建关联
{
l = getNewRelationControl(null, null);
}
if (l == null)//新建失败使用默认关联
{
l = new LynxConnectLine();
l.IsErrorData = true;
}
if (l != null)
{
l.designCanvas = this;
l.StartAnchorPoint = StartAnchor;
l.EndAnchorPoint = EndAnchor;
StartAnchor.OutRelationList.Add(l);
EndAnchor.InRelationList.Add(l);
l.SourceID = StartAnchor.ParentConnectControl.ObjectID;
l.TargetID = EndAnchor.ParentConnectControl.ObjectID;
}
}
if (l == null)
{
return;
} //没有能够创立链接
sendObjectOperationEvent(l, DesignOperationFlag.CreateRelation); //建立新的连接
l.ReadFromObject();
DeActiveAll();
l.DrawRelationLine(StartPoint.Value, e.GetCurrentPoint(getCanvas()).Position);
RelationList.Add(l);
ActiveDesignObject(l);
EndAnchor = null;
StartAnchor = null;
CurrentConnectPoint = null;
}
public IDesignAnchorPoint getNearAnchorPoint(Point DiagramPosition)
{
if (this.AnchorPointList.Count == 0)
{
return(null);
}
double min = getDistance(DiagramPosition, getAnchorPointCenter(AnchorPointList[0]));
IDesignAnchorPoint Anchor = AnchorPointList[0];
for (int i = 1; i < AnchorPointList.Count; i++)
{
IDesignAnchorPoint dap = AnchorPointList[i];
double td = getDistance(DiagramPosition, getAnchorPointCenter(dap));
if (td < min)
{
min = td;
Anchor = dap;
}
}
return(Anchor);
}
