/// <summary>
/// Callback used by the decorator in <see cref="CreateEditorMode"/>
/// </summary>
private IPortCandidateProvider GetPortCandidateProvider(INode forNode)
{
var model = new MyNodePortLocationModel {
Inset = 10
};
return(PortCandidateProviders.FromCandidates(
new DefaultPortCandidate(forNode, model.CreateParameter(PortLocation.Center)),
new DefaultPortCandidate(forNode, model.CreateParameter(PortLocation.North)),
new DefaultPortCandidate(forNode, model.CreateParameter(PortLocation.East)),
new DefaultPortCandidate(forNode, model.CreateParameter(PortLocation.South)),
new DefaultPortCandidate(forNode, model.CreateParameter(PortLocation.West))));
}
/// <summary>
/// Creates an <see cref="IPortCandidateProvider"/> that considers the node's shape and rotation.
/// </summary>
private static IPortCandidateProvider CreatePortCandidateProvider(INode node)
{
var rotatedPortModel = RotatablePortLocationModelDecorator.Instance;
var freeModel = FreeNodePortLocationModel.Instance;
var rnsd = (RotatableNodeStyleDecorator)node.Style;
var wrapped = rnsd.Wrapped;
var sns = wrapped as ShapeNodeStyle;
if (wrapped is ShinyPlateNodeStyle || wrapped is BevelNodeStyle ||
sns != null && sns.Shape == ShapeNodeShape.RoundRectangle)
{
return(PortCandidateProviders.Combine(
//Take all existing ports - these are assumed to have the correct port location model
PortCandidateProviders.FromUnoccupiedPorts(node),
//Provide explicit candidates - these are all backed by a rotatable port location model
PortCandidateProviders.FromCandidates(
//Port candidates at the corners that are slightly inset
new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(freeModel.CreateParameter(new PointD(0, 0), new PointD(5, 5)))),
new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(freeModel.CreateParameter(new PointD(0, 1), new PointD(5, -5)))),
new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(freeModel.CreateParameter(new PointD(1, 0), new PointD(-5, 5)))),
new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(freeModel.CreateParameter(new PointD(1, 1), new PointD(-5, -5)))),
//Port candidates at the sides and the center
new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(FreeNodePortLocationModel.NodeLeftAnchored)),
new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(FreeNodePortLocationModel.NodeBottomAnchored)),
new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(FreeNodePortLocationModel.NodeCenterAnchored)),
new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(FreeNodePortLocationModel.NodeTopAnchored)),
new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(FreeNodePortLocationModel.NodeRightAnchored))
)));
}
if (sns != null && sns.Shape == ShapeNodeShape.Rectangle)
{
return(PortCandidateProviders.Combine(
PortCandidateProviders.FromUnoccupiedPorts(node),
PortCandidateProviders.FromCandidates(
//Port candidates at the corners
new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(FreeNodePortLocationModel.NodeTopLeftAnchored)),
new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(FreeNodePortLocationModel.NodeTopRightAnchored)),
new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(FreeNodePortLocationModel.NodeBottomLeftAnchored)),
new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(FreeNodePortLocationModel.NodeBottomRightAnchored)),
//Port candidates at the sides and the center
new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(FreeNodePortLocationModel.NodeLeftAnchored)),
new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(FreeNodePortLocationModel.NodeBottomAnchored)),
new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(FreeNodePortLocationModel.NodeCenterAnchored)),
new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(FreeNodePortLocationModel.NodeTopAnchored)),
new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(FreeNodePortLocationModel.NodeRightAnchored))
)));
}
if (sns != null)
{
// Can be an arbitrary shape. First create a dummy node that is not rotated
var dummyNode = new SimpleNode
{
Style = sns,
Layout = node.Layout
};
var shapeProvider = PortCandidateProviders.FromShapeGeometry(dummyNode, 0);
var shapeCandidates = shapeProvider.GetTargetPortCandidates(null);
var rotatingCandidates =
shapeCandidates.Select(c => new DefaultPortCandidate(node, rotatedPortModel.CreateWrappingParameter(c.LocationParameter)));
return(PortCandidateProviders.Combine(
PortCandidateProviders.FromUnoccupiedPorts(node),
PortCandidateProviders.FromCandidates(rotatingCandidates)));
}
return(null);
}
