Automatic Layout

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The DevExpress Diagram Control provides a set of layout algorithms that you can use to automatically arrange shapes. This feature allows you and your end-users to quickly and effectively generate drawings, which can be manually fine-tuned afterwards.

End-users can apply automatic layout in the DiagramControl by clicking the Re-Layout Page ribbon item and selecting the desired algorithm and flow direction.

relayout_menu

The following drawing algorithms are available.

Tree graph

This algorithm is used to draw hierarchical diagrams. It arranges shapes in a tree structure and aligns them evenly based on their hierarchical level.

tree_graph

To apply the algorithm in code, use the DiagramControl.ApplyTreeLayout method.

By default, this algorithm rearranges only shapes that are connected to at least one other shape. To rearrange all shapes on the canvas, use the DiagramControl.ApplyTreeLayout method overload with the splitMode parameter set to SplitToConnectedComponentsMode.AllComponents.

The DiagramOptionsTreeLayout class contains the layout settings.

Layered (Sugiyama) graph

This algorithm is used to draw layered networks that usually represent dependency relations. It minimizes the number of connector crossings and spreads shapes evenly.

Sugiyama_graph

To apply the algorithm in code, use the DiagramControl.ApplySugiyamaLayout method.

The DiagramOptionsSugiyamaLayout class contains the layout settings.

Circular Layout

This algorithm places shapes on a circle, evenly spaced.

Circular_Layout

To apply the algorithm in code, use the DiagramControl.ApplyCircularLayout method. The DiagramOptionsCircularLayout.Order property specifies whether to position shapes clockwise, counterclockwise or minimizing the number of crossings of connection lines.

The DiagramOptionsCircularLayout class contains the layout settings.

Tip-Over Tree Layout

This algorithm arranges shapes in a tree structure so that the vertex children are aligned in either a single row or a single column.

TipOverTreeLayout

To apply the algorithm in code, use the DiagramControl.ApplyTipOverTreeLayout method. To rearrange all shapes on the canvas, use the DiagramControl.ApplyTreeLayout method overload with the splitMode parameter set to SplitToConnectedComponentsMode.AllComponents.

The DiagramOptionsTipOverTreeLayout class contains the layout settings.

Mind-Map Tree Layout

This algorithm creates non-linear hierarchical diagrams arranged around a central idea or subject.

Mind Map Layout

To apply the algorithm in code, use the DiagramControl.ApplyMindMapTreeLayout method. To rearrange all shapes on the canvas, use the DiagramControl.ApplyMindMapTreeLayout method overload with the splitMode parameter set to SplitToConnectedComponentsMode.AllComponents.

The DiagramOptionsMindMapTreeLayout class contains the layout settings.

Org Chart Layout

This algorithm visualizes roles and relationships within an entity such as a company department. Shapes in the upper levels of hierarchy in the org chart layout are arranged using the tree graph algorithm. The OrgChartLayoutTreeLevelCount property specifies the number of layers in the tree section. The lower levels of hierarchy are arranged using the tip-over tree layout algorithm.

To apply the algorithm in code, use the DiagramControl.ApplyOrgChartLayout method. To rearrange all shapes on the canvas, use the DiagramControl.ApplyOrgChartLayout method overload with the splitMode parameter set to SplitToConnectedComponentsMode.AllComponents.

See Also