From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754480Ab0CBUpT (ORCPT ); Tue, 2 Mar 2010 15:45:19 -0500 Received: from gmp-eb-inf-1.sun.com ([192.18.6.21]:42108 "EHLO gmp-eb-inf-1.sun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754114Ab0CBUpR (ORCPT ); Tue, 2 Mar 2010 15:45:17 -0500 MIME-version: 1.0 Content-transfer-encoding: 8BIT Content-type: text/plain; charset=UTF-8 Date: Tue, 02 Mar 2010 21:44:48 +0100 From: Michael Thayer Subject: Re: [PATCH 1/1]: input: add support for VirtualBox touchscreen emulation to the Lifebook driver In-reply-to: <20100225101705.GF10823@core.coreip.homeip.net> To: Dmitry Torokhov Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Message-id: <1267562688.2441.7.camel@michael-laptop> Organization: Sun Microsystems GmbH X-Mailer: Evolution 2.28.1 References: <1266923615.3602.85.camel@michael-laptop> <20100223175852.GA11301@core.coreip.homeip.net> <1266958533.3602.128.camel@michael-laptop> <20100224100206.GA5598@core.coreip.homeip.net> <1267011989.2831.30.camel@michael-laptop> <20100225101705.GF10823@core.coreip.homeip.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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@sun.com Sitz der Gesellschaft: Sun Microsystems GmbH, Sonnenallee 1, 85551 Kirchheim-Heimstetten Amtsgericht Muenchen: HRB 161028 Geschaeftsfuehrer: Thomas Schroeder, Wolfgang Engels Vorsitzender des Aufsichtsrates: Martin Haering