public ConnectorPoint BreakAtPoint(Point point, int?brokenSegment = null)
{
if (brokenSegment == null)
{
brokenSegment = GeometryHelper.FindHitSegmentIndex(point, this.Points);
}
ConnectorPoint connectorPoint = new ConnectorPoint(ExolutioCanvas);
connectorPoint.OrderInConnector = brokenSegment.Value + 1;
connectorPoint.Placement = EPlacementKind.AbsoluteCanvas;
connectorPoint.Connector = this;
ExolutioCanvas.Children.Add(connectorPoint);
connectorPoint.SetPreferedPosition(point);
ExolutioContextMenu exolutioContextMenu = new ExolutioContextMenu();
ContextMenuItem cStraighten = new ContextMenuItem("Straighten line here");
cStraighten.Tag = connectorPoint;
cStraighten.Click += delegate(object sender, RoutedEventArgs e)
{
ConnectorPoint clickedPoint = (ConnectorPoint)((ContextMenuItem)sender).Tag;
StraightenLineAtPoint(clickedPoint);
};
exolutioContextMenu.Items.Add(cStraighten);
connectorPoint.ContextMenu = exolutioContextMenu;
foreach (ConnectorPoint cp in Points)
{
if (cp.OrderInConnector >= connectorPoint.OrderInConnector)
{
cp.OrderInConnector++;
}
}
this.Points.Insert(connectorPoint.OrderInConnector, connectorPoint);
InvokePointsCountChanged();
this.InvalidateGeometry();
return(connectorPoint);
}
public Rect GetBounds()
{
return(GeometryHelper.GetBasicControlBounds(this));
}
public void Connect(Node node1, Node node2)
{
if (StartNode != null)
{
StartNode.Connectors.Remove(this);
}
if (EndNode != null)
{
EndNode.Connectors.Remove(this);
}
StartNode = node1;
EndNode = node2;
Point[] optimalConnection;
if (node1 != node2)
{
optimalConnection = GeometryHelper.ComputeOptimalConnection(node1, node2);
}
else
{
optimalConnection = GeometryHelper.ComputePointsForSelfAssociation(node1.GetBounds());
}
#if SILVERLIGHT
if (node1.GetBounds().Width == 0)
{
sourceMeasureValid = false;
}
if (node2.GetBounds().Width == 0)
{
targetMeasureValid = false;
}
#endif
ConnectorPoint startPoint = new ConnectorPoint(ExolutioCanvas)
{
Placement = EPlacementKind.ParentAutoPos, ParentControl = node1, Connector = this, OrderInConnector = 0
};
ConnectorPoint endPoint = new ConnectorPoint(ExolutioCanvas)
{
Placement = EPlacementKind.ParentAutoPos, ParentControl = node2, Connector = this, OrderInConnector = 1
};
startPoint.SetPreferedPosition(optimalConnection.First());
endPoint.SetPreferedPosition(optimalConnection.Last());
foreach (ConnectorPoint point in Points)
{
if (point.OrderInConnector == 0)
{
point.ParentControl.InnerConnectorControl.Children.Remove(point);
}
else if (point.OrderInConnector == Points.Count - 1)
{
point.ParentControl.InnerConnectorControl.Children.Remove(point);
}
else
{
ExolutioCanvas.Children.Remove(point);
}
}
points.Clear();
points.Add(startPoint);
points.Add(endPoint);
StartNode.InnerConnectorControl.Children.Add(startPoint);
EndNode.InnerConnectorControl.Children.Add(endPoint);
StartNode.Connectors.Add(this);
// in the case where StartNode == EndNode, the connector is added only once
EndNode.Connectors.AddIfNotContained(this);
for (int i = (optimalConnection.Count() - 1) - 1; i >= 1; i--)
{
ConnectorPoint newPoint = BreakAtPoint(optimalConnection[i]);
if (node1 == node2)
{
newPoint.Placement = EPlacementKind.RelativeCanvas;
newPoint.SnapTo(node1, false);
}
}
InvalidateGeometry();
}
/// <summary>
/// Adjusts the end points position to an optimal position
/// (when their <see cref="DragThumb.Placement"/> is set
/// to <see cref="EPlacementKind.ParentAutoPos"/>).
/// </summary>
public bool AdjustEndPoints()
{
#if SILVERLIGHT
if (StartNode != null && !sourceMeasureValid)
{
sourceMeasureValid = StartNode.GetBounds().Width != 0;
}
if (EndNode != null && !targetMeasureValid)
{
targetMeasureValid = EndNode.GetBounds().Width != 0;
}
#endif
// StartNode and EndNode now can be null to allow disconnected connector points
if (StartNode != null && !StartNode.IsMeasureValid)
{
return(false);
}
if (EndNode != null && !EndNode.IsMeasureValid)
{
return(false);
}
if (StartPoint == null || EndPoint == null ||
!targetMeasureValid || !sourceMeasureValid)
{
return(false);
}
#region set source junctionEnd position
double angle = StartNode != null ? StartNode.BoundsAngle : 0;
if (StartPoint.Placement == EPlacementKind.AbsoluteSubCanvas)
{
Point snappedStart = StartNode.GetBounds().Normalize().SnapPointToRectangle(StartPoint.Position);
if (snappedStart != StartPoint.Position)
{
StartPoint.SetPreferedPosition(snappedStart);
}
}
if (AutoPosModeOnly && StartPoint.Placement != EPlacementKind.ParentAutoPos)
{
StartPoint.Placement = EPlacementKind.ParentAutoPos;
}
// Condition removed to allow disconnected connector points
//if (StartNode.IsMeasureValid /*&& (viewHelperPointsCollection == null || Points.Count == viewHelperPointsCollection.Count)*/
// /*&& (StartPoint.Placement == EPlacementKind.ParentAutoPos || viewHelperPointsCollection == null || viewHelperPointsCollection.PointsInvalid)*/)
{
Rect r1 = GeometryHelper.GetFirstElementBounds(this);
Rect r2 = GeometryHelper.GetFirstButOneElementBounds(this);
Point p1 = GeometryHelper.RectangleRectangleCenterIntersection(r1, r2, true, angle);
if (StartPoint.Placement != EPlacementKind.ParentAutoPos && StartPoint.Position.AlmostEqual(p1) && !((IDraggable)StartPoint).DragThumb.IsDragged)
{
StartPoint.Placement = EPlacementKind.ParentAutoPos;
}
if (StartPoint.Placement == EPlacementKind.ParentAutoPos)
{ // simplified to this..
StartPoint.SetPreferedPosition(p1);
}
//if (viewHelperPointsCollection == null)
//{
// StartPoint.SetPreferedPosition(p1);
//}
//else if (!viewHelperPointsCollection.First().AlmostEqual(p1))
//{
// if (viewHelperPointsCollection.PointsInvalid)
// {
// viewHelperPointsCollection[0].Set(p1);
// StartPoint.SetPreferedPosition(p1);
// viewHelperPointsCollection.PointsInvalid = false;
// }
// else
// {
// if (!sourceMeasureValid)
// {
// if (p1 != StartPoint.Position)
// {
// if (!AutoPosModeOnly)
// {
// StartPoint.Placement = EPlacementKind.AbsoluteSubCanvas;
// Point snapped = r1.Normalize().SnapPointToRectangle(StartPoint.Position);
// if (snapped != StartPoint.Position)
// StartPoint.SetPreferedPosition(snapped);
// }
// }
// }
// else
// {
// viewHelperPointsCollection[0].Set(p1);
// StartPoint.SetPreferedPosition(p1);
// }
// }
//}
//else
//{
// StartPoint.SetPreferedPosition(p1);
// StartPoint.Placement = EPlacementKind.ParentAutoPos;
//}
sourceMeasureValid = true;
}
#endregion
#region set end junctionEnd position
if (EndPoint.Placement == EPlacementKind.AbsoluteSubCanvas)
{
Point snappedEnd = EndNode.GetBounds().Normalize().SnapPointToRectangle(EndPoint.Position);
if (snappedEnd != EndPoint.Position)
{
EndPoint.SetPreferedPosition(snappedEnd);
}
}
angle = EndNode != null ? EndNode.BoundsAngle : 0;
if (AutoPosModeOnly && EndPoint.Placement != EPlacementKind.ParentAutoPos)
{
EndPoint.Placement = EPlacementKind.ParentAutoPos;
}
// Condition removed to allow disconnected connector points
//if (EndNode.IsMeasureValid /*&& (viewHelperPointsCollection == null || Points.Count == viewHelperPointsCollection.Count)*/
// /*&& (EndPoint.Placement == EPlacementKind.ParentAutoPos || viewHelperPointsCollection == null || viewHelperPointsCollection.PointsInvalid)*/)
{
Rect r1 = GeometryHelper.GetLastElementBounds(this);
Rect r2 = GeometryHelper.GetLastButOneElementBounds(this);
Point p2 = GeometryHelper.RectangleRectangleCenterIntersection(r1, r2, true, angle);
if (EndPoint.Placement != EPlacementKind.ParentAutoPos && EndPoint.Position.AlmostEqual(p2) && !((IDraggable)EndPoint).DragThumb.IsDragged)
{
EndPoint.Placement = EPlacementKind.ParentAutoPos;
}
if (EndPoint.Placement == EPlacementKind.ParentAutoPos)
{ // simplified to this..
EndPoint.SetPreferedPosition(p2);
}
//if (viewHelperPointsCollection == null)
//{
// EndPoint.SetPreferedPosition(p2);
//}
//else if (!viewHelperPointsCollection.Last().AlmostEqual(p2))
//{
// if (viewHelperPointsCollection.PointsInvalid)
// {
// viewHelperPointsCollection.Last().Set(p2);
// EndPoint.SetPreferedPosition(p2);
// viewHelperPointsCollection.PointsInvalid = false;
// }
// else
// {
// if (!targetMeasureValid)
// {
// if (p2 != EndPoint.Position)
// {
// EndPoint.Placement = EPlacementKind.AbsoluteSubCanvas;
// Point snapped = r1.Normalize().SnapPointToRectangle(EndPoint.Position);
// if (snapped != EndPoint.Position)
// EndPoint.SetPreferedPosition(snapped);
// }
// }
// else
// {
// viewHelperPointsCollection.Last().Set(p2);
// EndPoint.SetPreferedPosition(p2);
// }
// }
//}
//else
//{
// EndPoint.SetPreferedPosition(p2);
// EndPoint.Placement = EPlacementKind.ParentAutoPos;
//}
targetMeasureValid = true;
}
#endregion
return(true);
}
public void InvalidateGeometry( )
{
bool valid = AdjustEndPoints();
if (!valid)
{
return;
}
Point startPointShifted = StartPoint.CanvasPosition;
Point endPointShifted = EndPoint.CanvasPosition;
PathGeometry path = new PathGeometry();
PathFigure startFigure = null;
PathFigure endFigure = null;
#region define startFigure
if (StartCapStyle != EConnectorCapStyle.Straight)
{
Point start = StartPoint.CanvasPosition;
Point end = Points[1].CanvasPosition;
startFigure = new PathFigure {
StartPoint = start
};
PolyLineSegment seg = new PolyLineSegment();
seg.Points.Add(end);
startFigure.Segments.Add(seg);
switch (StartCapStyle)
{
case EConnectorCapStyle.FullArrow:
case EConnectorCapStyle.Arrow:
case EConnectorCapStyle.Triangle:
Point dummy = new Point();
if (StartCapStyle == EConnectorCapStyle.Arrow)
{
startFigure = GeometryHelper.CalculateArrow(startFigure, end, start,
StartCapStyle != EConnectorCapStyle.Arrow, ref dummy);
}
else
{
startFigure = GeometryHelper.CalculateArrow(startFigure, end, start,
StartCapStyle != EConnectorCapStyle.Arrow,
ref endPointShifted);
}
break;
case EConnectorCapStyle.FullDiamond:
case EConnectorCapStyle.Diamond:
startFigure = GeometryHelper.CalculateDiamond(startFigure, end, start, ref startPointShifted);
break;
}
}
#endregion
#region define endFigure
#if SILVERLIGHT
#else
if (EndCapStyle != EConnectorCapStyle.Straight)
{
endFigure = new PathFigure();
Point start = EndPoint.CanvasPosition;
Point end = Points[Points.Count - 2].CanvasPosition;
PolyLineSegment seg = new PolyLineSegment();
seg.Points.Add(end);
endFigure.Segments.Add(seg);
switch (EndCapStyle)
{
case EConnectorCapStyle.Arrow:
case EConnectorCapStyle.FullArrow:
case EConnectorCapStyle.Triangle:
Point dummy = new Point();
if (EndCapStyle == EConnectorCapStyle.Arrow)
{
endFigure = GeometryHelper.CalculateArrow(endFigure, end, start, EndCapStyle != EConnectorCapStyle.Arrow,
ref dummy);
}
else
{
endFigure = GeometryHelper.CalculateArrow(endFigure, end, start, EndCapStyle != EConnectorCapStyle.Arrow,
ref endPointShifted);
}
break;
case EConnectorCapStyle.Diamond:
case EConnectorCapStyle.FullDiamond:
endFigure = GeometryHelper.CalculateDiamond(endFigure, end, start, ref endPointShifted);
break;
}
}
#endif
#endregion
#region create junctionFigure
if (StartCapStyle == EConnectorCapStyle.FullArrow || StartCapStyle == EConnectorCapStyle.FullDiamond ||
EndCapStyle == EConnectorCapStyle.FullDiamond || EndCapStyle == EConnectorCapStyle.FullArrow)
{
Fill = Brushes.Black;
}
else
{
Fill = Brushes.White;
}
PathFigure junctionFigure = new PathFigure {
StartPoint = startPointShifted
};
PolyLineSegment segment = new PolyLineSegment();
for (int i = 1; i < Points.Count - 1; i++)
{
segment.Points.Add(Points[i].CanvasPosition);
}
segment.Points.Add(endPointShifted);
#if SILVERLIGHT
#else
segment.IsSmoothJoin = true;
#endif
junctionFigure.Segments.Add(segment);
junctionFigure.IsFilled = false;
#endregion
if (startFigure != null)
{
path.Figures.Add(startFigure);
}
path.Figures.Add(junctionFigure);
if (endFigure != null)
{
path.Figures.Add(endFigure);
}
path.FillRule = FillRule.Nonzero;
geometry = path;
InvalidateVisual();
VirtualReferentialThumb.CanvasPosition = GetVirtualCenterPosition();
//if (Association != null)
//{
// Association.UpdateNameLabelPosition();
//}
}