private static void AddEdge(NeuronViewModelBase selectedNeuron, string id, string source, string target, MsGraph graph, string strength = "1", bool inhibitoryEndpoint = false)
{
if (graph.Edges.SingleOrDefault(e => e.Attr.Id == id) == null)
{
Edge e = null;
if (strength != "1")
{
e = graph.AddEdge(source, strength, target);
e.Label.FontSize = e.Label.FontSize * 0.8;
e.Attr.AddStyle(Microsoft.Msagl.Drawing.Style.Dashed);
}
else
{
e = graph.AddEdge(source, target);
}
e.Attr.Id = id;
if (selectedNeuron.TerminalId == id)
{
e.Attr.Color = NeuronGraphView.GetHighlightColor();
}
else if (inhibitoryEndpoint)
{
e.Attr.Color = Color.IndianRed;
}
}
}
private static void AddNeuronAndChildren(NeuronViewModelBase root, NeuronViewModelBase selectedNeuron, NeuronViewModelBase value, MsGraph graph)
{
NeuronGraphView.AddSingleNeuron(root, selectedNeuron, value, graph);
if (value.Parent.HasValue)
{
if (graph.FindNode(value.Parent.Value.NeuronId) == null)
{
NeuronGraphView.AddSingleNeuron(root, selectedNeuron, value.Parent.Value, graph);
}
switch (value.Neuron.Type)
{
case RelativeType.Postsynaptic:
NeuronGraphView.AddEdge(selectedNeuron, value.TerminalId, value.Parent.Value.NeuronId, value.NeuronId, graph, value.Neuron.Terminal.Strength, value.Neuron.Terminal.Effect == "-1");
break;
case RelativeType.Presynaptic:
NeuronGraphView.AddEdge(selectedNeuron, value.TerminalId, value.NeuronId, value.Parent.Value.NeuronId, graph, value.Neuron.Terminal.Strength, value.Neuron.Terminal.Effect == "-1");
break;
case RelativeType.NotSet:
NeuronGraphView.AddEdge(selectedNeuron, value.NeuronId, value.NeuronId, value.Parent.Value.NeuronId, graph);
break;
}
}
if (value.Children != null)
{
foreach (var c in value.Children)
{
NeuronGraphView.AddNeuronAndChildren(root, selectedNeuron, c, graph);
}
}
}
private static void AddSingleNeuron(NeuronViewModelBase root, NeuronViewModelBase selectedNeuron, NeuronViewModelBase value, MsGraph graph)
{
var n = graph.AddNode(value.NeuronId);
n.LabelText = value.Tag;
if (selectedNeuron == value)
{
var mtc = SystemColors.HighlightTextColor;
n.Attr.FillColor = NeuronGraphView.GetHighlightColor();
n.Label.FontColor = new Color(mtc.A, mtc.R, mtc.G, mtc.B);
}
else if (root == value)
{
n.Attr.Color = NeuronGraphView.GetHighlightColor();
n.Attr.LineWidth *= 1.5;
}
}
public NeuronGraphView()
{
InitializeComponent();
this.graphViewer = new GraphViewer();
this.graphViewer.BindToPanel(this.ContentPanel);
this.WhenActivated(d =>
{
this.WhenAnyValue(x => x.DataContext)
.Where(x => x != null)
.Subscribe(x => this.ViewModel = (NeuronGraphViewModel)x);
d(this.OneWayBind(this.ViewModel, vm => vm.LayoutOptions, v => v.Layout.ItemsSource, vmp => vmp.Select(s => new MenuItem()
{
Header = s, IsCheckable = true, Style = Resources["MenuItemStyle1"] as System.Windows.Style
})));
Observable.FromEventPattern <RoutedEventHandler, RoutedEventArgs>(
ev => this.Layout.Click += ev,
ev => this.Layout.Click -= ev
).Subscribe(ep =>
{
this.ViewModel.Layout = this.Layout.Items.IndexOf(ep.EventArgs.OriginalSource);
this.Layout.Items.Cast <MenuItem>().ToList().ForEach(mi => mi.IsChecked = false);
((MenuItem)ep.EventArgs.OriginalSource).IsChecked = true;
});
Observable.FromEventPattern <EventHandler <MsaglMouseEventArgs>, MsaglMouseEventArgs>(
ev => this.graphViewer.MouseDown += ev,
ev => this.graphViewer.MouseDown -= ev
).Subscribe(ep =>
{
var gv = ep.Sender as GraphViewer;
if (
gv != null &&
gv.ObjectUnderMouseCursor != null &&
(
gv.ObjectUnderMouseCursor.DrawingObject is Node ||
gv.ObjectUnderMouseCursor.DrawingObject is Edge
)
)
{
Node node = null;
if (gv.ObjectUnderMouseCursor.DrawingObject is Node)
{
node = (Node)gv.ObjectUnderMouseCursor.DrawingObject;
this.ViewModel.InternallySelectNeuronAndTerminal(node.Id, null);
}
else
{
var terminalId = ((Edge)gv.ObjectUnderMouseCursor.DrawingObject).Attr.Id;
var neuronId = this.ViewModel.GetNeuronId(terminalId);
this.ViewModel.InternallySelectNeuronAndTerminal(neuronId, terminalId);
node = gv.Graph.FindNode(neuronId);
}
// reset highlight for all unselected neuron(s) in graph
gv.Graph.Nodes.ToList().ForEach(n => NeuronGraphView.FillIfNotExternallySelected(
n,
this.ViewModel.ExternallySelectedNeuron.NeuronId,
NeuronGraphView.ConvertColorToMsaglColor(SystemColors.WindowColor),
1
));
// highlight selected neuron in graph
NeuronGraphView.FillIfNotExternallySelected(
node,
this.ViewModel.ExternallySelectedNeuron.NeuronId,
NeuronGraphView.ConvertColorToMsaglColor(Color.Yellow, 80),
1
);
// add/remove highlight for selected/unselected presynaptic/postsynaptic
var postsynaptic = NeuronGraphView.ConvertColorToMsaglColor(Color.LightGreen, 90);
var presynaptic = NeuronGraphView.ConvertColorToMsaglColor(Color.PowderBlue, 150);
node.Edges.ToList().ForEach(e =>
{
if (e.SourceNode == node)
{
NeuronGraphView.FillIfNotExternallySelected(
e.TargetNode,
this.ViewModel.ExternallySelectedNeuron.NeuronId,
postsynaptic,
2
);
}
else
{
NeuronGraphView.FillIfNotExternallySelected(
e.SourceNode,
this.ViewModel.ExternallySelectedNeuron.NeuronId,
presynaptic,
2
);
}
});
}
this.ViewModel.SelectCommand.Execute().Subscribe();
});
Observable.FromEventPattern <PropertyChangedEventHandler, PropertyChangedEventArgs>(
ev => this.ViewModel.PropertyChanged += ev,
ev => this.ViewModel.PropertyChanged -= ev
).Subscribe(ep =>
{
if (ep.EventArgs.PropertyName == nameof(NeuronGraphViewModel.ExternallySelectedNeuron))
{
this.graphViewer.Graph = null;
MsGraph graph = new MsGraph();
graph.Attr.LayerDirection = (LayerDirection)this.ViewModel.Layout;
NeuronViewModelBase root = this.ViewModel.ExternallySelectedNeuron;
while (root.Parent.HasValue)
{
root = root.Parent.Value;
}
NeuronGraphView.AddNeuronAndChildren(root, this.ViewModel.ExternallySelectedNeuron, root, graph);
this.graphViewer.Graph = graph;
}
});
});
}
