Cells Layout

In This Topic

Cells layouts deal with with the automatic arrangement of the graph vertices (edges are ignored). All types of cells layouts derive from the abstract NCellsLayout class.

Each graph vertex is represented by a single cell. Each cell has two bounding boxes:

Cell bounds (cell)- the cell bounds are internally determined by the layout algorithm. When a cells layout determines the cells bounds of a cell it may take into account the supplemental data provided for each cell (see below). The cell bounds represent the space allocated by the layout in which the vertex content must be fitted.
Content bounds (content) - once the layout algorithm determines the location and size of the cell bounds, it positions and sizes the content bounds (e.g. fits the content in the cell) according to the per-vertex provided supplemental data (see below).

Supplement Data

The following supplemental data is common of all types of cells layouts. It is generally split into two categories:

Cell bounds (cell) data- this is the supplemental data, which provides the layout with hints about how large a cell can be. Currently cells layouts support the following cell data:

MinSize - a NSizeF value, which specifies the min size of a cell bounds. Layouts may or may not respect this setting.

MaxSize - a NSizeF value, which specifies the max size of a cell bounds. Layouts may or may not respect this setting.
Content bounds (content) data - this is the supplemental data, which controls the per-vertex fitting of the content into the allocated cell. Currently cells layouts support the following content data:

HorizontalContentPlacement - a value from the ContentPlacement enumeration, which specifies how content is horizontally placed in the cell. If not specifies the default setting is obtained by the HorizontalContentPlacement property of the NCellsLayout class.

VerticalContentPlacement - a value from the ContentPlacement enumeration, which specifies how content is vertically placed in the cell. If not specifies the default setting is obtained by the VerticalContentPlacement property of the NCellsLayout class.

In Nevron Diagram these properties are members of the NLayoutData class, accessible from the LayoutData property of each shape. The NShapeBodyAdapter adapts the values of the layout data for you.