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From: Henrik Rydberg <rydberg@euromail.se>
To: Peter Hutterer <peter.hutterer@who-t.net>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>,
	linux-input@vger.kernel.org, dmitry.torokhov@gmail.com,
	jkosina@suse.cz
Subject: Re: Questions about Multi-touch Protocal
Date: Thu, 14 Jan 2010 01:35:13 +0100	[thread overview]
Message-ID: <4B4E66C1.6040204@euromail.se> (raw)
In-Reply-To: <20100113222506.GA14525@barra.bne.redhat.com>

Peter Hutterer wrote:
[..]
> Note that ABS_MT_TOUCH_MAJOR complements ABS_PRESSURE but cannot substitute
> it. The nature of our fingures usually mean that with increasing pressure
> the touch size increases as the finger flattens. This is only useful as a
> relative indicator though, as fingers differ greatly in size.

Ok, in my book this makes the third voice for an ABS_MT_PRESSURE parameter, so
it should most likely be added. I will write a patch for it.

Cheers,
Henrik


      reply	other threads:[~2010-01-14  0:35 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-01-05  6:18 Questions about Multi-touch Protocal Joonyoung Shim
2010-01-05 12:08 ` Henrik Rydberg
2010-01-05 12:42   ` Florian Echtler
2010-01-05 12:55     ` Henrik Rydberg
2010-01-05 17:49   ` Dmitry Torokhov
2010-01-06  0:49   ` Joonyoung Shim
2010-01-13 20:21     ` Henrik Rydberg
2010-01-13 22:25     ` Peter Hutterer
2010-01-14  0:35       ` Henrik Rydberg [this message]

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