/// <summary>
/// Creates an enumerable of <see cref="PortDescriptor"/>s belonging to the type of the node as specified by its
/// <see cref="LogicGateType"/> set as its tag or an empty list if there is no
/// <see cref="LogicGateType"/>.
/// </summary>
/// <param name="logicGateType"></param>
public static IEnumerable <PortDescriptor> CreatePortDescriptors(LogicGateType logicGateType)
{
var inside = new InsideOutsidePortLabelModel().CreateInsideParameter();
var aboveEdgeLeft = FreePortLabelModel.Instance.CreateParameter(new PointD(-5, -3), new PointD(1, 1), PointD.Origin, 0);
var aboveEdgeRight = FreePortLabelModel.Instance.CreateParameter(new PointD(5, -3), new PointD(0, 1), PointD.Origin, 0);
var belowEdgeLeft = FreePortLabelModel.Instance.CreateParameter(new PointD(-5, 3), new PointD(1, 0), PointD.Origin, 0);
switch (logicGateType)
{
default:
case LogicGateType.And:
return(new List <PortDescriptor> {
new PortDescriptor {
X = 0, Y = 5, EdgeDirection = EdgeDirection.In, LabelText = "in1",
LabelPlacementWithEdge = aboveEdgeLeft
},
new PortDescriptor {
X = 0, Y = 25, EdgeDirection = EdgeDirection.In, LabelText = "in2",
LabelPlacementWithEdge = belowEdgeLeft
},
new PortDescriptor {
X = 50, Y = 15, EdgeDirection = EdgeDirection.Out, LabelText = "out",
LabelPlacementWithEdge = aboveEdgeRight
}
});
case LogicGateType.Nand:
return(new List <PortDescriptor> {
new PortDescriptor {
X = 0, Y = 5, EdgeDirection = EdgeDirection.In, LabelText = "in1",
LabelPlacementWithEdge = aboveEdgeLeft
},
new PortDescriptor {
X = 0, Y = 25, EdgeDirection = EdgeDirection.In, LabelText = "in2",
LabelPlacementWithEdge = belowEdgeLeft
},
new PortDescriptor {
X = 50, Y = 15, EdgeDirection = EdgeDirection.Out, LabelText = "out",
LabelPlacementWithEdge = aboveEdgeRight
}
});
case LogicGateType.Or:
return(new List <PortDescriptor> {
new PortDescriptor {
X = 0, Y = 5, EdgeDirection = EdgeDirection.In, LabelText = "in1",
LabelPlacementWithEdge = aboveEdgeLeft
},
new PortDescriptor {
X = 0, Y = 25, EdgeDirection = EdgeDirection.In, LabelText = "in2",
LabelPlacementWithEdge = belowEdgeLeft
},
new PortDescriptor {
X = 50, Y = 15, EdgeDirection = EdgeDirection.Out, LabelText = "out",
LabelPlacementWithEdge = aboveEdgeRight
}
});
case LogicGateType.Nor:
return(new List <PortDescriptor> {
new PortDescriptor {
X = 0, Y = 5, EdgeDirection = EdgeDirection.In, LabelText = "in1",
LabelPlacementWithEdge = aboveEdgeLeft
},
new PortDescriptor {
X = 0, Y = 25, EdgeDirection = EdgeDirection.In, LabelText = "in2",
LabelPlacementWithEdge = belowEdgeLeft
},
new PortDescriptor {
X = 50, Y = 15, EdgeDirection = EdgeDirection.Out, LabelText = "out",
LabelPlacementWithEdge = aboveEdgeRight
}
});
case LogicGateType.Not:
return(new List <PortDescriptor> {
new PortDescriptor {
X = 0, Y = 15, EdgeDirection = EdgeDirection.In, LabelText = "in",
LabelPlacementWithEdge = aboveEdgeLeft
},
new PortDescriptor {
X = 50, Y = 15, EdgeDirection = EdgeDirection.Out, LabelText = "out",
LabelPlacementWithEdge = aboveEdgeRight
}
});
case LogicGateType.Timer:
return(new[] {
new PortDescriptor {
X = 0, Y = 20, EdgeDirection = EdgeDirection.In, LabelText = "gnd",
LabelPlacementWithEdge = inside
},
new PortDescriptor {
X = 0, Y = 40, EdgeDirection = EdgeDirection.In, LabelText = "trig",
LabelPlacementWithEdge = inside
},
new PortDescriptor {
X = 0, Y = 80, EdgeDirection = EdgeDirection.Out, LabelText = "out",
LabelPlacementWithEdge = inside
},
new PortDescriptor {
X = 0, Y = 100, EdgeDirection = EdgeDirection.In, LabelText = "rst",
LabelPlacementWithEdge = inside
},
new PortDescriptor {
X = 70, Y = 20, EdgeDirection = EdgeDirection.In, LabelText = "Vcc",
LabelPlacementWithEdge = inside
},
new PortDescriptor {
X = 70, Y = 40, EdgeDirection = EdgeDirection.Out, LabelText = "dis",
LabelPlacementWithEdge = inside
},
new PortDescriptor {
X = 70, Y = 80, EdgeDirection = EdgeDirection.In, LabelText = "thr",
LabelPlacementWithEdge = inside
},
new PortDescriptor {
X = 70, Y = 100, EdgeDirection = EdgeDirection.In, LabelText = "ctrl",
LabelPlacementWithEdge = inside
},
});
case LogicGateType.ADConverter:
return(new[] {
new PortDescriptor {
X = 0, Y = 20, EdgeDirection = EdgeDirection.In, LabelText = "Vin",
LabelPlacementWithEdge = inside
},
new PortDescriptor {
X = 0, Y = 40, EdgeDirection = EdgeDirection.In, LabelText = "gnd",
LabelPlacementWithEdge = inside
},
new PortDescriptor {
X = 0, Y = 80, EdgeDirection = EdgeDirection.In, LabelText = "Vref",
LabelPlacementWithEdge = inside
},
new PortDescriptor {
X = 0, Y = 100, EdgeDirection = EdgeDirection.In, LabelText = "clk",
LabelPlacementWithEdge = inside
},
new PortDescriptor {
X = 70, Y = 20, EdgeDirection = EdgeDirection.Out, LabelText = "d1",
LabelPlacementWithEdge = inside
},
new PortDescriptor {
X = 70, Y = 40, EdgeDirection = EdgeDirection.Out, LabelText = "d2",
LabelPlacementWithEdge = inside
},
new PortDescriptor {
X = 70, Y = 100, EdgeDirection = EdgeDirection.Out, LabelText = "sign",
LabelPlacementWithEdge = inside
},
});
}
}
/// <summary>
/// Creates the default input mode for the GraphControl,
/// a <see cref="GraphEditorInputMode"/>.
/// </summary>
/// <remarks>
/// The control uses a custom node creation callback that creates business objects for newly
/// created nodes.
/// </remarks>
/// <returns>a new GraphEditorInputMode instance</returns>
protected virtual IInputMode CreateEditorMode()
{
var mode = new GraphEditorInputMode
{
// don't allow nodes to be created using a mouse click
AllowCreateNode = false,
// don't allow bends to be created using a mouse drag on an edge
AllowCreateBend = false,
// disable node resizing
ShowHandleItems = GraphItemTypes.Bend | GraphItemTypes.Edge,
// enable orthogonal edge creation and editing
OrthogonalEdgeEditingContext = new OrthogonalEdgeEditingContext(),
// enable drag and drop
NodeDropInputMode = { Enabled = true },
// disable moving labels
MoveLabelInputMode = { Enabled = false },
// enable snapping for easier orthogonal edge editing
SnapContext = new GraphSnapContext {
Enabled = true
},
CreateEdgeInputMode =
{
// only allow starting an edge creation over a valid port candidate
StartOverCandidateOnly = true,
// show all port candidates when hovering over a node
ShowPortCandidates = ShowPortCandidates.All
}
};
// wrap the original node creator so it copies the ports and labels from the dragged node
var originalNodeCreator = mode.NodeDropInputMode.ItemCreator;
mode.NodeDropInputMode.ItemCreator =
(context, graph, draggedNode, dropTarget, layout) => {
if (draggedNode != null)
{
var newNode = originalNodeCreator(context, graph, new SimpleNode {
Style = draggedNode.Style, Layout = draggedNode.Layout
}, dropTarget, layout);
// copy the ports
foreach (var port in draggedNode.Ports)
{
var descriptor = (PortDescriptor)port.Tag;
var portStyle = new NodeStylePortStyleAdapter(new ShapeNodeStyle {
Brush = descriptor.EdgeDirection == EdgeDirection.In ? Brushes.Green : Brushes.DodgerBlue,
Pen = null,
Shape = ShapeNodeShape.Rectangle
})
{
RenderSize = new SizeD(5, 5)
};
var newPort = graph.AddPort(newNode, port.LocationParameter, portStyle, port.Tag);
// create the port labels
var parameter = new InsideOutsidePortLabelModel().CreateOutsideParameter();
graph.AddLabel(newPort, descriptor.LabelText, parameter, tag: descriptor);
}
// copy the labels
foreach (var label in draggedNode.Labels)
{
graph.AddLabel(newNode, label.Text, label.LayoutParameter, label.Style, tag: label.Tag);
}
return(newNode);
}
// fallback
return(originalNodeCreator(context, graph, draggedNode, dropTarget, layout));
};
mode.CreateEdgeInputMode.EdgeCreated += (sender, args) => {
var sourcePortLabel = args.SourcePort.Labels.FirstOrDefault();
var targetPortLabel = args.TargetPort.Labels.FirstOrDefault();
if (sourcePortLabel != null)
{
ReplaceLabelModel(args.SourcePort, sourcePortLabel);
}
if (targetPortLabel != null)
{
ReplaceLabelModel(args.TargetPort, targetPortLabel);
}
};
graphControl.Graph.EdgeRemoved += (sender, args) => {
var sourcePortLabel = args.SourcePort.Labels.FirstOrDefault();
var targetPortLabel = args.TargetPort.Labels.FirstOrDefault();
if (sourcePortLabel != null && !graphControl.Graph.EdgesAt(args.SourcePort).Any())
{
graphControl.Graph.SetLabelLayoutParameter(sourcePortLabel,
new InsideOutsidePortLabelModel().CreateOutsideParameter());
}
if (targetPortLabel != null && !graphControl.Graph.EdgesAt(args.TargetPort).Any())
{
graphControl.Graph.SetLabelLayoutParameter(targetPortLabel,
new InsideOutsidePortLabelModel().CreateOutsideParameter());
}
};
return(mode);
}