private GroupLayoutInfo LayoutRecursive(
[NotNull] DiagramLayoutStructure layoutStructure,
[NotNull] ILayoutGroup layoutGroup,
[NotNull] IGroupLayoutAlgorithm layoutAlgorithm)
{
var childLayoutByParentNodeId = new Dictionary <ModelNodeId, GroupLayoutInfo>();
foreach (var node in layoutGroup.Nodes)
{
var maybeLayoutGroup = layoutStructure.TryGetLayoutGroupByNodeId(node.Id);
if (!maybeLayoutGroup.HasValue || maybeLayoutGroup.Value.IsEmpty)
{
continue;
}
var nodeLayoutAlgorithm = _layoutAlgorithmSelectionStrategy.GetForNode(node);
var childrenAreaLayoutInfo = LayoutRecursive(layoutStructure, maybeLayoutGroup.Value, nodeLayoutAlgorithm);
layoutGroup.SetChildrenAreaSize(node.Id, childrenAreaLayoutInfo.Rect.Size);
childLayoutByParentNodeId.Add(node.Id, childrenAreaLayoutInfo);
}
var groupLayoutInfo = layoutAlgorithm.Calculate(layoutGroup);
foreach (var nodeLayoutInfo in groupLayoutInfo.Nodes)
{
if (childLayoutByParentNodeId.TryGetValue(nodeLayoutInfo.Node.Id, out var childrenAreaLayoutInfo))
{
nodeLayoutInfo.ChildrenArea = childrenAreaLayoutInfo;
}
}
return(groupLayoutInfo);
}
public DiagramLayoutInfo Calculate(IDiagram diagram)
{
var layoutStructure = new DiagramLayoutStructure(diagram);
var rootLayoutAlgorithm = _layoutAlgorithmSelectionStrategy.GetForRoot();
var rootLayoutInfo = LayoutRecursive(layoutStructure, layoutStructure.RootLayoutGroup, rootLayoutAlgorithm);
return(new DiagramLayoutInfo(rootLayoutInfo.Nodes, rootLayoutInfo.Connectors));
}
public GroupLayoutInfo Calculate(IDiagram diagram)
{
var layoutStructure = new DiagramLayoutStructure(diagram);
var rootLayoutAlgorithm = _layoutAlgorithmSelectionStrategy.GetForRoot();
var relativeLayout = LayoutRecursive(layoutStructure, layoutStructure.RootLayoutGroup, rootLayoutAlgorithm);
var absoluteLayout = _layoutUnifier.CalculateAbsoluteLayout(relativeLayout);
var crossGroupLines = CreateDirectRoutes(layoutStructure.CrossLayoutGroupConnectors, diagram, absoluteLayout);
return(absoluteLayout.AddLineLayoutInfo(crossGroupLines));
}
private GroupLayoutInfo LayoutRecursive(
[NotNull] DiagramLayoutStructure layoutStructure,
[NotNull] ILayoutGroup layoutGroup,
[NotNull] IGroupLayoutAlgorithm layoutAlgorithm)
{
var childLayoutByParentNodeId = new Dictionary <string, GroupLayoutInfo>();
foreach (var node in layoutGroup.Nodes)
{
var maybeLayoutGroup = layoutStructure.TryGetLayoutGroupByNodeId(node.Id);
if (!maybeLayoutGroup.HasValue || maybeLayoutGroup.Value.IsEmpty)
{
continue;
}
var nodeLayoutAlgorithm = _layoutAlgorithmSelectionStrategy.GetForNode(node);
var childrenAreaLayoutInfo = LayoutRecursive(layoutStructure, maybeLayoutGroup.Value, nodeLayoutAlgorithm);
layoutGroup.SetChildrenAreaSize(node.Id, childrenAreaLayoutInfo.Rect.Size.WithMargin(ChildrenAreaPadding));
childLayoutByParentNodeId.Add(node.ShapeId, childrenAreaLayoutInfo);
}
var layoutInfo = layoutAlgorithm.Calculate(layoutGroup);
var boxes = layoutGroup.Nodes.Select(
i =>
{
childLayoutByParentNodeId.TryGetValue(i.ShapeId, out var childrenAreaLayoutInfo);
return(new BoxLayoutInfo(
i.ShapeId,
layoutInfo.VertexRects[i.Id].TopLeft,
payloadAreaSize: i.PayloadAreaSize,
childrenAreaLayoutInfo?.Rect.Size.WithMargin(ChildrenAreaPadding) ?? Size2D.Zero,
childrenAreaLayoutInfo));
}
);
var lines = layoutGroup.Connectors.Select(i => new LineLayoutInfo(i.ShapeId, layoutInfo.EdgeRoutes[i.Id]));
return(new GroupLayoutInfo(boxes, lines));
}