Constants that determine how a component should automatically calculate its own dimensions when no explicit dimensions are provided.
Constants that define a direction.
Constants for horizontal alignment (positioning along the x axis) of items in a layout.
Positions and sizes children in a container.
Optional, extra data used by some
An object that is aware of its position in a layout.
An object that may contain extra data for use with the parent container's layout.
A layout that is affected by changes to scroll position.
A layout algorithm that supports virtualization of items. In other words,
only the items that are visible need to be created as display objects, and
those outside of the view port bounds are represented with empty space until
they are scrolled into view. Useful in components like
Calculated bounds for layout.
Stores the current measurements for a display object.
Constants for positioning an item relative to another item in a layout.
Constants for vertical alignment (positioning along the y axis) of items in a layout.
The range of items currently displayed by a virtual layout.