linux-kernel - Re: [PATCH 1/1]: input: add support for VirtualBox touchscreen emulation to the Lifebook driver

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Date:	Tue, 02 Mar 2010 21:44:48 +0100
From:	Michael Thayer <Michael.Thayer@....COM>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1]: input: add support for VirtualBox touchscreen
 emulation to the Lifebook driver

Hello Dmitry,

Le jeudi 25 février 2010 à 02:17 -0800, Dmitry Torokhov a écrit :
> On Wed, Feb 24, 2010 at 12:46:29PM +0100, Michael Thayer wrote:
> > Le mercredi 24 février 2010 à 02:02 -0800, Dmitry Torokhov a écrit :
> > > On Tue, Feb 23, 2010 at 09:55:33PM +0100, Michael Thayer wrote:
> > > > I'm not sure, if we ended up doing a completely new device, how different it
> > > > would end up being.  Emulating a touchscreen or a tablet makes sense for us as
> > > > these are both something known, which will work with existing systems without
> > > > too much tweaking
> > > > [snip]
> > > But the virtual mouse is not a touchscreen or a tablet, it behaves
> > > differently.
> > What would you suggest emulating that exists in the real world?
> 
> There are not many real devices that have teh same characteristics as
> virtual mouse generating absolute coordinates. Umm, the closest would be
> a wacom tablet when used with its own mouse.
We decided in the end to emulate a USB tablet, as some other virtualisers do.
It works well out of the box with recent Linux distributions, and while older
ones recognise it as a touchpad (in fact they use it through /dev/input/mice),
it still provides a reasonable user experience until the user has installed our
guest drivers.

Thank you again for your comments and assistance.

Regards,

Michael
-- 
Sun Microsystems GmbH        Michael Thayer
Werkstrasse 24               VirtualBox engineer
71384 Weinstadt, Germany     mailto:michael.thayer@....com

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