Hi Dmitry, et al, On Tue, Jul 26, 2011 at 2:16 AM, Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> wrote: > > On Mon, Jul 25, 2011 at 05:14:22PM +0800, Daniel Kurtz wrote: > > On Mon, Jul 25, 2011 at 4:29 PM, Dmitry Torokhov > > <dmitry.torokhov@xxxxxxxxx> wrote: > > > > > > On Wed, Jul 20, 2011 at 09:39:05PM +0800, djkurtz@xxxxxxxxxxxx wrote: > > > > From: Daniel Kurtz <djkurtz@xxxxxxxxxxxx> > > > > > > > > > > Do we know what we want to do with this gesture? Because if not I'd > > > rather not merge it for now, until there are real users. > > > > And do what instead? > > Report 5 fingers with BTN_TOOL_QUADTAP? > > > > That, or nothing... The fact that the device can report 5 finger touch > does not mean that anybody cares about this. > -- > Dmitry The only current use of this is to detect "resting thumb + 4-finger-scroll". "4-finger scroll" is a gesture supported by some applications and operating systems. "resting thumb" is when a clickpad user rests a finger (typically a thumb), in the bottom left "click zone" in anticipation of click+move=select gestures. Thus, this 4-finger scroll is actually sometimes a 5-finger gesture. Similarly, I work with many touchpads from different vendors, some of which do actually provide 5 independent finger coordinates. The drivers for these touchpads truly send 5 MT-B slots when 5 fingers are present. Should these drivers perform input_mt_report_pointer_emulation()? If so, should we add BTN_TOOL_QUINTTAP to allow them to report 5 fingers in emulation mode? Or is that ridiculous, since emulation is only for old userspace programs which wouldn't know what to do with QUINTTAP, anyway? -Dan -- 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
