Providing a user interface

摘要

A system for providing a user interface includes an XML-based scene file that includes an element tag that specifies an element of the user interface. The system also includes an XML-based animation tag and an XML-based state tag. The animation tag includes an animator element for applying an animation to an attribute of the element. The state tag specifies a state of the element and references the animation tag such that the animation is applied to the attribute in response to the element entering the state. In addition, the system includes a parser to parse the scene file, the animation tag, and the state tag and to generate an object model that includes an element object corresponding to the element of the user interface. The system further includes a layout engine to determine a layout of the user interface and a rendering engine to render the user interface.