A generic bounding box with a width and a height.
A numeric size with a unit, which represents a generic size (e.g. margin, length, font size).
A collection of generic top, right, bottom and left Sizes.
Represents a size expressed in centimeters.
Represents a size expressed in inches.
Represents a size expressed in millimeters.
Represents a size in percentage.
Represents a size expressed in pixels.
Shorthand for creating a BoundingBox from two Sizes.