/// <summary>
/// Removes all edges that are incident to group nodes and passes it to the core layout algorithm.
/// </summary>
/// <remarks>
/// This stage removes some edges from the graph such that no edges incident to group nodes
/// exist. Then, it applies the core layout algorithm to the reduced graph.
/// After it produces the result, it re-inserts the previously removed edges and routes them.
/// </remarks>
public override void ApplyLayout(LayoutGraph graph) {
var groupingSupport = new yWorks.Layout.Grouping.GroupingSupport(graph);
if (!GroupingSupport.IsGrouped(graph)) {
ApplyLayoutCore(graph);
} else {
var hiddenEdgesMap = Maps.CreateHashedEdgeMap();
var edgeHider = new LayoutGraphHider(graph);
var existHiddenEdges = false;
foreach (var edge in graph.Edges) {
if (groupingSupport.IsGroupNode(edge.Source) || groupingSupport.IsGroupNode(edge.Target)) {
hiddenEdgesMap.Set(edge, true);
edgeHider.Hide(edge);
existHiddenEdges = true;
} else {
hiddenEdgesMap.Set(edge, false);
}
}
ApplyLayoutCore(graph);
if (existHiddenEdges) {
edgeHider.UnhideAll();
// routes the marked edges
RouteMarkedEdges(graph, hiddenEdgesMap);
if (ConsiderEdgeLabels) {
// all labels of hidden edges should be marked
var affectedLabelsDpKey = "affectedLabelsDpKey";
var nonTreeLabelsMap = Maps.CreateHashedDataMap();
foreach (var edge in graph.Edges) {
var ell = graph.GetLabelLayout(edge);
foreach (var labelLayout in ell) {
nonTreeLabelsMap.Set(labelLayout, hiddenEdgesMap.Get(edge));
}
}
// add selection marker
graph.AddDataProvider(affectedLabelsDpKey, nonTreeLabelsMap);
// place marked labels
var labeling = new GenericLabeling {
PlaceNodeLabels = false,
PlaceEdgeLabels = true,
AffectedLabelsDpKey = affectedLabelsDpKey,
};
labeling.ApplyLayout(graph);
// dispose selection key
graph.RemoveDataProvider(affectedLabelsDpKey);
}
}
}
}
private void ApplyLabeling(LayoutGraph graph)
{
GenericLabeling labeling = new GenericLabeling();
labeling.MaximumDuration = 0;
labeling.ReduceAmbiguity = true;
labeling.PlaceNodeLabels = true;
labeling.PlaceEdgeLabels = true;
labeling.AffectedLabelsDpKey = AffectedLabelsDpKey;
labeling.ProfitModel = new BpmnLabelProfitModel(graph);
labeling.CustomProfitModelRatio = 0.15;
labeling.ApplyLayout(graph);
}
