From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ping Cheng Subject: Re: [PATCH] input: mt: Add an envelope tool type Date: Wed, 8 Dec 2010 17:20:43 -0800 Message-ID: References: <1291721340-22652-1-git-send-email-rydberg@euromail.se> <4CFFC3C2.1080905@canonical.com> <20101208235805.GE15294@core.coreip.homeip.net> <4D002CE8.2060803@euromail.se> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Return-path: Received: from mail-ww0-f44.google.com ([74.125.82.44]:38091 "EHLO mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754546Ab0LIBUo (ORCPT ); Wed, 8 Dec 2010 20:20:44 -0500 In-Reply-To: <4D002CE8.2060803@euromail.se> Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Henrik Rydberg Cc: Dmitry Torokhov , Chase Douglas , Jiri Kosina , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org On Wed, Dec 8, 2010 at 5:12 PM, Henrik Rydberg wrote: >>>> > >>>> Is it assumed that the envelop has only two touches comprising it? Or is >>>> it any number of touches? If it's any number of touches, how does one >>>> know how many touches it is? >>> >>> Those are good questions. Specifying how many touches are in the >>> envelop makes sense. It also covers rectangle as a special case of >>> envelop. >> >> I have a feeling that trying to accomodate non-rectangular, more than 2 >> point shapes without using native MT data is over-engineering the >> problem... Do we have examples other than older generation Elantechs and >> Synaptics that need envelope notion? >> > > > Those are the ones targeted so far. Maybe appletouch could be added to the list > as well. I imagine all drivers will end up using zero, one and two envelope points. What are the "points" here? Do you mean the points inside the envelope or number of envelopes? Ping