ITV Handbook: Technologies and Standards

The HAVi Level 2 GUI APIs complement the markup-based GUI programming with a framework delivering fine-grained control on every aspect of the GUI. Its development was driven by the need for synchronized high-quality animations and user experience not typically expected from consumer electronics devices and not available with PCs. The HAVi L2 GUI APIs extend the Java AWT framework to meet the needs and expectations of consumer electronic devices. Key extensions include a multi-layer display mode, fine control over device configuration, and a new method to customize look-and-feel that is adequate for consumer electronics market.

The HAVi L2 GUI specification is complex and its implementation requires careful attention to details. The reader is cautioned that the various versions of HAVi are not compatible. Version 1.1, the most recent stable version, is not backwards compatible in many cases.