An object oriented zooming engine provides zooming graphical objects for a zooming graphical user interface. A zooming object residing in a zooming graphical user interface has attributes that are defined by graphical object classes having a particular class hierarchy. Color scheme object classes have...http://www.google.com.hk/patents/US6456296?utm_source=gb-gplus-share專利 US6456296 - Color scheme for zooming graphical user interface
