public void AddExistRelation(IDesignRelation idr)//添加关联，自行判断是否有关联控件存在
{
if (idr == null)
{
return;
}
if (NodeList.Count == 0)
{
return;
}
idr.designCanvas = this;
IDesignNode sdn = null, tdn = null;
if (idr.SourceID != null)
{
List <IDesignNode> rl = NodeList.Where(n => n.ObjectID == idr.SourceID).ToList();
if (rl.Count > 0)
{
sdn = rl[0];
}
}
if (idr.TargetID != null)
{
List <IDesignNode> rl = NodeList.Where(n => n.ObjectID == idr.SourceID).ToList();
if (rl.Count > 0)
{
tdn = rl[0];
}
}
if (sdn != null)
{
idr.StartAnchorPoint = sdn.getDefaultAnchorPoint();
idr.StartPoint = idr.StartAnchorPoint.getDesignCanvasPoint();
}
else
{
idr.StartAnchorPoint = null;
idr.StartPoint = new Point(DeseignCanvas.Width / 2 - (new Random()).Next(50), DeseignCanvas.Height / 2 - (new Random()).Next(50));
}
if (tdn != null)
{
idr.EndAnchorPoint = tdn.getDefaultAnchorPoint();
idr.EndPoint = idr.EndAnchorPoint.getDesignCanvasPoint();
}
else
{
idr.EndAnchorPoint = null;
idr.EndPoint = new Point(DeseignCanvas.Width / 2 + (new Random()).Next(150), DeseignCanvas.Height / 2 + (new Random()).Next(150));
}
FrameworkElement fe = idr.getControl();
DeseignCanvas.Children.Add(fe);
idr.DrawRelationLine(idr.StartPoint, idr.EndPoint);
sendObjectOperationEvent(idr, DesignOperationFlag.CreateRelation);//提示设计图增加了节点对象
RelationList.Add(idr);
}
public void AddExistRelation(IDesignRelation idr, IDesignNode sdn, IDesignNode tdn)//在指定的起始节点和终止节点之间添加一个关联控件
{
if (idr == null)
{
return;
}
if (NodeList.Count == 0)
{
return;
}
idr.designCanvas = this;
if (sdn != null)
{
idr.StartAnchorPoint = sdn.getDefaultAnchorPoint();
idr.StartPoint = idr.StartAnchorPoint.getDesignCanvasPoint();
}
else
{
idr.StartAnchorPoint = null;
idr.StartPoint = new Point(DeseignCanvas.Width / 2 - (new Random()).Next(50), DeseignCanvas.Height / 2 - (new Random()).Next(50));
}
if (tdn != null)
{
idr.EndAnchorPoint = tdn.getDefaultAnchorPoint();
idr.EndPoint = idr.EndAnchorPoint.getDesignCanvasPoint();
}
else
{
idr.EndAnchorPoint = null;
idr.EndPoint = new Point(DeseignCanvas.Width / 2 + (new Random()).Next(150), DeseignCanvas.Height / 2 + (new Random()).Next(150));
}
FrameworkElement fe = idr.getControl();
DeseignCanvas.Children.Add(fe);
idr.DrawRelationLine(idr.StartPoint, idr.EndPoint);
sendObjectOperationEvent(idr, DesignOperationFlag.CreateRelation);//提示设计图增加了节点对象
RelationList.Add(idr);
}