/// <summary>
/// Setup default values for various configuration parameters.
/// </summary>
public TreeLayoutConfig()
{
var layout = new ClassicTreeLayout();
var aspectRatioNodePlacer = new AspectRatioNodePlacer();
var defaultNodePlacer = new DefaultNodePlacer();
LayoutStyleItem = EnumStyle.Default;
RoutingStyleForNonTreeEdgesItem = EnumRoute.Orthogonal;
EdgeBundlingStrengthItem = 0.95;
ActOnSelectionOnlyItem = false;
DefaultLayoutOrientationItem = LayoutOrientation.TopToBottom;
ClassicLayoutOrientationItem = LayoutOrientation.TopToBottom;
MinimumNodeDistanceItem = (int)layout.MinimumNodeDistance;
MinimumLayerDistanceItem = (int)layout.MinimumLayerDistance;
PortStyleItem = PortStyle.NodeCenter;
ConsiderNodeLabelsItem = false;
OrthogonalEdgeRoutingItem = false;
VerticalAlignmentItem = 0.5;
ChildPlacementPolicyItem = LeafPlacement.SiblingsOnSameLayer;
EnforceGlobalLayeringItem = false;
NodePlacerItem = EnumNodePlacer.Default;
SpacingItem = 20;
RootAlignmentItem = EnumRootAlignment.Center;
AllowMultiParentsItem = false;
PortAssignmentItem = PortAssignmentMode.None;
HvHorizontalSpaceItem = (int)defaultNodePlacer.HorizontalDistance;
HvVerticalSpaceItem = (int)defaultNodePlacer.VerticalDistance;
BusAlignmentItem = 0.5;
ArHorizontalSpaceItem = (int)aspectRatioNodePlacer.HorizontalDistance;
ArVerticalSpaceItem = (int)aspectRatioNodePlacer.VerticalDistance;
NodePlacerAspectRatioItem = aspectRatioNodePlacer.AspectRatio;
ArUseViewAspectRatioItem = true;
CompactPreferredAspectRatioItem = aspectRatioNodePlacer.AspectRatio;
EdgeLabelingItem = EnumEdgeLabeling.None;
LabelPlacementAlongEdgeItem = EnumLabelPlacementAlongEdge.Centered;
LabelPlacementSideOfEdgeItem = EnumLabelPlacementSideOfEdge.OnEdge;
LabelPlacementOrientationItem = EnumLabelPlacementOrientation.Horizontal;
LabelPlacementDistanceItem = 10;
}
///<summary>
/// Create a sample graph: a simple tree with SimpleNodePlacers assigned to each node.
/// This implementation creates three layers with three children each.
///</summary>
private void CreateSampleGraph(IGraph graph)
{
graph.Clear();
INode root = graph.CreateNode();
var style = new ShinyPlateNodeStyle {
Brush = NodePlacerPanel.LayerBrushes[0]
};
graph.SetStyle(root, style);
var placer = new DefaultNodePlacer
{
ChildPlacement = ChildPlacement.VerticalToRight
};
placers[root] = placer;
CreateSubTree(graph, root, 1, 2);
}
///<summary>
/// Recursively builds a sub tree
///</summary>summary>
private void CreateSubTree(IGraph graph, INode root, int layer, int layers)
{
int children = NumChildren[layer];
for (int i = 0; i < children; i++)
{
INode child = graph.CreateNode();
graph.CreateEdge(root, child);
graph.SetStyle(child, new ShinyPlateNodeStyle {
Brush = NodePlacerPanel.LayerBrushes[layer % NodePlacerPanel.LayerBrushes.Length]
});
var placer = new DefaultNodePlacer {
ChildPlacement = ChildPlacement.VerticalToRight
};
placers[child] = placer;
if (layers > 0)
{
CreateSubTree(graph, child, layer + 1, layers - 1);
}
}
}
