On Wed, Dec 08, 2010 at 09:46:04AM -0800, Chase Douglas wrote: > On 12/07/2010 12:27 AM, Henrik Rydberg wrote: > > Touch devices capable of hovering, i.e., fingers detected a distance > > from the surface, are not supported by the current input MT > > protocol. This patch adds ABS_MT_DISTANCE, which may be used to > > indicate the distance between the contact and the surface. > > Have you given thought to calling it ABS_MT_Z instead? I have no real > problem with ABS_MT_DISTANCE per se, but ABS_MT_Z is more clearly > defined in my head. If I was new to MT development I may wonder if > ABS_MT_DISTANCE had anything to do with distance between points or some > other object. X/Y/Z imply that we fully engaged the device and it is 3 dimensional. Distance says that we are approaching the device but have not directly engaged it yet. I think ABS_DISTANCE was added at Pings request and ABS_MT_DISTANCE is modeled after ST one. Ping, could you refresh my memory why we needed ABS_DISTANCE? Thanks. -- Dmitry -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
