linux-kernel - Re: [PATCH 2/2] input: mousedev: Emulate right and middle buttons for single-button touchpads

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Message-ID: <20080910125228.GA25221@anvil.corenet.prv>
Date:	Wed, 10 Sep 2008 08:52:28 -0400
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Henrik Rydberg <rydberg@...omail.se>
Cc:	akpm@...l.org, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] input: mousedev: Emulate right and middle buttons
	for single-button touchpads

Hi Henrik,

On Fri, Sep 05, 2008 at 03:19:56AM +0200, Henrik Rydberg wrote:
> On most linux-based systems, the right and middle buttons are used
> extensively. On computers lacking either of those buttons, such as
> the Apple Macbooks, emulation is needed. This patch adds emulation
> of the missing buttons via two-fingers-and-click and three-fingers-
> and-click operations, which has recently become standard, both in
> MacOS and in the Xorg synaptics driver.
> 

The standard way of emulating right and middle button presses for
"button-deficient" devices is to use Macintosh emulation
(MAC_EMUMOUSEBTN) that works not only for touchpads but for regular mice
as well.

Overall I don't think we should enhance mousedev for scenarios where
proper solution is to install Synaptics X driver. This also goes for
your other patch improving tapping in mousedev.

-- 
Dmitry
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