/// <summary>
/// Builds the properties for the labels's <see cref="ILabelModel"/> type.
/// </summary>
protected virtual void BuildModelProperties(IPropertyBuildContext <ILabel> context)
{
ValueGetterDelegate <Type> labelModelGetter = new ValueGetterDelegate <Type>(
delegate {
var type = context.CurrentInstance.LayoutParameter.Model.GetType();
while (!type.IsPublic)
{
type = type.BaseType;
}
return(type);
});
ValueSetterDelegate <Type> labelModelSetter = new ValueSetterDelegate <Type>(
delegate(Type value) {
IGraph graph = context.Lookup(typeof(IGraph)) as IGraph;
if (graph != null)
{
ILabelModel model = Activator.CreateInstance(value) as ILabelModel;
if (model != null)
{
ILabelModelParameterFinder finder =
model.Lookup(typeof(ILabelModelParameterFinder)) as ILabelModelParameterFinder;
ILabelModelParameter parameter;
ILabel subject = context.CurrentInstance;
if (finder != null)
{
parameter = finder.FindBestParameter(subject, model, subject.GetLayout());
}
else
{
parameter = model.CreateDefaultParameter();
}
graph.SetLabelLayoutParameter(subject, parameter);
}
}
});
ILabel currentLabel;
currentLabel = context.CurrentInstance;
if (currentLabel == null)
{
return;
}
if (currentLabel.Owner is IEdge)
{
context.AddEntry(EdgeLabelModelProperty,
labelModelGetter,
labelModelSetter, null);
}
if (currentLabel.Owner is INode)
{
context.AddEntry(NodeLabelModelProperty, labelModelGetter, labelModelSetter, null);
}
if (currentLabel.Owner is IPort)
{
context.AddEntry(PortLabelModelProperty, labelModelGetter, labelModelSetter, null);
}
}
/// <summary>
/// Does the label placement using the generic labeling algorithm. Before this, the model and size of the labels is
/// set according to the option handlers settings.
/// </summary>
private async Task DoLabelPlacement()
{
if (inLayout)
{
return;
}
inLayout = true;
toolBar.IsEnabled = false;
editorControl.IsEnabled = false;
//desired label model
ILabelModel labelModel = LabelModels[(string)handler[LABEL_MODEL].Value];
int size = (int)handler[LABEL_SIZE].Value;
foreach (var label in graphControl.Graph.Labels)
{
if (label.Owner is INode)
{
// only update the label model parameter if the label model changed
if (labelModel != graphControl.Graph.NodeDefaults.Labels.LayoutParameter.Model)
{
graphControl.Graph.SetLabelLayoutParameter(label, labelModel.CreateDefaultParameter());
}
var cityLabelStyle = label.Style as CityLabelStyle;
if (cityLabelStyle != null && cityLabelStyle.InnerLabelStyle is DefaultLabelStyle)
{
((DefaultLabelStyle)cityLabelStyle.InnerLabelStyle).TextSize = size;
}
graphControl.Graph.AdjustLabelPreferredSize(label);
}
}
{
// set as default label model parameter
graphControl.Graph.NodeDefaults.Labels.LayoutParameter = labelModel.CreateDefaultParameter();
var cityLabelStyle = graphControl.Graph.NodeDefaults.Labels.Style as CityLabelStyle;
if (cityLabelStyle != null && cityLabelStyle.InnerLabelStyle is DefaultLabelStyle)
{
((DefaultLabelStyle)cityLabelStyle.InnerLabelStyle).TextSize = size;
}
}
graphControl.Invalidate();
// configure and run the layout algorithm
var labelingAlgorithm = new GenericLabeling
{
MaximumDuration = 0,
OptimizationStrategy = OptimizationStrategy.Balanced,
PlaceEdgeLabels = false,
PlaceNodeLabels = true,
ReduceLabelOverlaps = true,
ProfitModel = new ExtendedLabelCandidateProfitModel(),
};
var layoutExecutor = new LayoutExecutor(graphControl, graphControl.Graph, labelingAlgorithm)
{
Duration = TimeSpan.FromMilliseconds(500),
EasedAnimation = true,
AnimateViewport = false,
UpdateContentRect = true
};
await layoutExecutor.Start();
toolBar.IsEnabled = true;
editorControl.IsEnabled = true;
inLayout = false;
}
/// <summary>
/// Does the label placement using the generic labeling algorithm. Before this, the model and size of the labels is
/// set according to the option handlers settings.
/// </summary>
private async Task DoLabelPlacement()
{
if (inLayout)
{
return;
}
inLayout = true;
toolStrip.Enabled = false;
//desired label model
ILabelModel labelModel = LabelModels[labelModelComboBox.SelectedItem.ToString()];
//desired label size
int size = Convert.ToInt32(sizeNumericUpDown.NumericUpDownControl.Text);
foreach (var label in graphControl.Graph.Labels)
{
if (label.Owner is INode)
{
// only update the label model parameter if the label model changed
if (labelModel != graphControl.Graph.NodeDefaults.Labels.LayoutParameter.Model)
{
graphControl.Graph.SetLabelLayoutParameter(label, labelModel.CreateDefaultParameter());
}
var cityLabelStyle = label.Style as CityLabelStyle;
if (cityLabelStyle != null && cityLabelStyle.InnerLabelStyle is DefaultLabelStyle)
{
var font = ((DefaultLabelStyle)cityLabelStyle.InnerLabelStyle).Font;
((DefaultLabelStyle)cityLabelStyle.InnerLabelStyle).Font = new Font(font.FontFamily, size);
}
graphControl.Graph.AdjustLabelPreferredSize(label);
}
}
{
// set as default label model parameter
graphControl.Graph.NodeDefaults.Labels.LayoutParameter = labelModel.CreateDefaultParameter();
var cityLabelStyle = graphControl.Graph.NodeDefaults.Labels.Style as CityLabelStyle;
if (cityLabelStyle != null && cityLabelStyle.InnerLabelStyle is DefaultLabelStyle)
{
var font = ((DefaultLabelStyle)cityLabelStyle.InnerLabelStyle).Font;
((DefaultLabelStyle)cityLabelStyle.InnerLabelStyle).Font = new Font(font.FontFamily, size);
}
}
graphControl.Invalidate();
// configure and run the layout algorithm
var labelingAlgorithm = new GenericLabeling
{
MaximumDuration = 0,
OptimizationStrategy = OptimizationStrategy.Balanced,
PlaceEdgeLabels = false,
PlaceNodeLabels = true,
ReduceLabelOverlaps = true,
ProfitModel = new ExtendedLabelCandidateProfitModel(),
};
var layoutExecutor = new LayoutExecutor(graphControl, graphControl.Graph, labelingAlgorithm)
{
Duration = TimeSpan.FromMilliseconds(500),
EasedAnimation = true,
AnimateViewport = false,
UpdateContentRect = true
};
await layoutExecutor.Start();
toolStrip.Enabled = true;
inLayout = false;
}
