public override void ElementAdded(ElementAddedEventArgs e)
{
ShapeElementContainsChildShapes con = e.ModelElement as ShapeElementContainsChildShapes;
if (con != null)
{
NodeShape childShape = con.ChildShape;
NodeShape parentShape = con.ParentShape;
if (childShape != null && parentShape != null)
{
if (childShape.IsDeleted)
{
return;
}
if (parentShape.IsDeleted)
{
return;
}
parentShape.AddToShapeMapping(childShape);
childShape.UpdateAbsoluteLocation();
if (childShape.Location == PointD.Empty)
{
childShape.SetAtFreePositionOnParent();
}
}
else
{
con.Delete();
}
}
}
private static void ProcessNodeShape(NodeShape shapeElement, LinkedElementCollection <NodeShapeInfo> infos)
{
// try to find NodeShapeInfo for shape element
NodeShapeInfo info = null;
foreach (NodeShapeInfo i in infos)
{
if (i.ElementId == shapeElement.Element.Id)
{
info = i;
break;
}
}
if (info == null)
{
shapeElement.UpdateAbsoluteLocation();
return;
}
shapeElement.Size = info.Size;
shapeElement.SetLocation(info.RelativeLocation);
// children
foreach (NodeShape shape in shapeElement.Children)
{
ProcessNodeShape(shape, info.ChildrenInfos);
}
}
private static void UpdateAbsoluteLocation(NodeShape shapeElement)
{
shapeElement.UpdateAbsoluteLocation();
foreach (NodeShape shape in shapeElement.Children)
{
UpdateAbsoluteLocation(shape);
}
}
private static void UpdateAbsoluteLocation(NodeShape shapeElement)
{
shapeElement.UpdateAbsoluteLocation();
foreach (NodeShape shape in shapeElement.Children)
{
UpdateAbsoluteLocation(shape);
}
}
private static void ProcessNodeShape(NodeShape shapeElement, LinkedElementCollection<NodeShapeInfo> infos)
{
// try to find NodeShapeInfo for shape element
NodeShapeInfo info = null;
foreach (NodeShapeInfo i in infos)
{
if (i.ElementId == shapeElement.Element.Id)
{
info = i;
break;
}
}
if (info == null)
{
shapeElement.UpdateAbsoluteLocation();
return;
}
shapeElement.Size = info.Size;
shapeElement.SetLocation(info.RelativeLocation);
// children
foreach (NodeShape shape in shapeElement.Children)
{
ProcessNodeShape(shape, info.ChildrenInfos);
}
}
/// <summary>
/// This function corrects the given proposed location if the given child shape is a relative shape and
/// is only allowed to be placed on the edge of its parent.
/// </summary>
/// <param name="placement">Proposed placement.</param>
/// <param name="parentShape">Parent shape.</param>
/// <param name="childShape">Child shape.</param>
/// <param name="proposedLocation">Proposed location.</param>
/// <remarks>
/// This function needs to be called withing a modeling transaction.
///
/// This function assigns new values to Location and PortPlacement if necessary.
/// </remarks>
/// <returns>
/// Location that was assigned to the shape. It might have the same value as the location
/// the shape had before calling this function.
/// </returns>
public static PointD CorrectPortLocation(PortPlacement placement, NodeShape parentShape, NodeShape childShape, PointD proposedLocation)
{
PointD newLocation = proposedLocation;
RectangleD rectParent = parentShape.Bounds;
switch (placement)
{
case PortPlacement.Left:
newLocation.X = -childShape.Size.Width / 2.0;
if (newLocation.Y < 0.0)
newLocation.Y = 0.0;
else if (newLocation.Y > (rectParent.Height - childShape.Size.Height))
newLocation.Y = rectParent.Height - childShape.Size.Height;
break;
case PortPlacement.Top:
newLocation.Y = -childShape.Size.Height / 2.0;
if (newLocation.X < 0.0)
newLocation.X = 0.0;
else if (newLocation.X > (rectParent.Width - childShape.Size.Width))
newLocation.X = rectParent.Width - childShape.Size.Width;
break;
case PortPlacement.Right:
newLocation.X = rectParent.Width - (childShape.Size.Width / 2.0);
if (newLocation.Y < 0.0)
newLocation.Y = 0.0;
else if (newLocation.Y > (rectParent.Height - childShape.Size.Height))
newLocation.Y = rectParent.Height - childShape.Size.Height;
break;
case PortPlacement.Bottom:
newLocation.Y = rectParent.Height - (childShape.Size.Height / 2.0);
if (newLocation.X < 0.0)
newLocation.X = 0.0;
else if (newLocation.X > (rectParent.Width - childShape.Size.Width))
newLocation.X = rectParent.Width - childShape.Size.Width;
break;
}
if (childShape.Location != newLocation)
{
childShape.Location = newLocation;
childShape.PlacementSide = placement;
childShape.UpdateAbsoluteLocation();
}
return newLocation;
}
/// <summary>
/// This function corrects the given proposed location if the given child shape is a relative shape and
/// is only allowed to be placed on the edge of its parent.
/// </summary>
/// <param name="placement">Proposed placement.</param>
/// <param name="parentShape">Parent shape.</param>
/// <param name="childShape">Child shape.</param>
/// <param name="proposedLocation">Proposed location.</param>
/// <remarks>
/// This function needs to be called withing a modeling transaction.
///
/// This function assigns new values to Location and PortPlacement if necessary.
/// </remarks>
/// <returns>
/// Location that was assigned to the shape. It might have the same value as the location
/// the shape had before calling this function.
/// </returns>
public static PointD CorrectPortLocation(PortPlacement placement, NodeShape parentShape, NodeShape childShape, PointD proposedLocation)
{
PointD newLocation = proposedLocation;
RectangleD rectParent = parentShape.Bounds;
switch (placement)
{
case PortPlacement.Left:
newLocation.X = -childShape.Size.Width / 2.0;
if (newLocation.Y < 0.0)
{
newLocation.Y = 0.0;
}
else if (newLocation.Y > (rectParent.Height - childShape.Size.Height))
{
newLocation.Y = rectParent.Height - childShape.Size.Height;
}
break;
case PortPlacement.Top:
newLocation.Y = -childShape.Size.Height / 2.0;
if (newLocation.X < 0.0)
{
newLocation.X = 0.0;
}
else if (newLocation.X > (rectParent.Width - childShape.Size.Width))
{
newLocation.X = rectParent.Width - childShape.Size.Width;
}
break;
case PortPlacement.Right:
newLocation.X = rectParent.Width - (childShape.Size.Width / 2.0);
if (newLocation.Y < 0.0)
{
newLocation.Y = 0.0;
}
else if (newLocation.Y > (rectParent.Height - childShape.Size.Height))
{
newLocation.Y = rectParent.Height - childShape.Size.Height;
}
break;
case PortPlacement.Bottom:
newLocation.Y = rectParent.Height - (childShape.Size.Height / 2.0);
if (newLocation.X < 0.0)
{
newLocation.X = 0.0;
}
else if (newLocation.X > (rectParent.Width - childShape.Size.Width))
{
newLocation.X = rectParent.Width - childShape.Size.Width;
}
break;
}
if (childShape.Location != newLocation)
{
childShape.Location = newLocation;
childShape.PlacementSide = placement;
childShape.UpdateAbsoluteLocation();
}
return(newLocation);
}
