2.2.12. Superclasses for Elements in the Layout Tree (layout.managers.root)¶

class layout.managers.root.GroupLayoutManager(elements: Sequence[layout.managers.root.LayoutElement] = []) → None¶

Bases: layout.managers.root.LayoutManager

A base class for layout managers that can have any number of elements.

class layout.managers.root.LayoutElement¶

Bases: abc.ABC

A layout element has size data and can be asked to draw itself.

get_minimum_size(data) → layout.datatypes.position.Point¶

How small can the element be? Should return a Point.

render(rectangle: layout.datatypes.position.Rectangle, data) → None¶

Asks the element to render itself.

class layout.managers.root.LayoutManager¶

Bases: layout.managers.root.LayoutElement

Layout managers position and size content to fit some container, based on some algorithm. This class is an empty subclass used for clearer naming when used as a parent class.

layout.managers.root.add_fields(store_name, field_names)¶

A class-decorator that creates layout managers with a set of named fields.