Re: [PATCH] input: mt: Add an envelope tool type

From: Ping Cheng <pinglinux@gmail.com>
To: Henrik Rydberg <rydberg@euromail.se>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>,
	Chase Douglas <chase.douglas@canonical.com>,
	Jiri Kosina <jkosina@suse.cz>,
	linux-input@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] input: mt: Add an envelope tool type
Date: Wed, 8 Dec 2010 17:22:33 -0800	[thread overview]
Message-ID: <AANLkTinp1ptZfiv3dqzcxvF8HAdj656NJvYaZxt-9bd6@mail.gmail.com> (raw)
In-Reply-To: <4D002E6A.7070709@euromail.se>

On Wed, Dec 8, 2010 at 5:18 PM, Henrik Rydberg <rydberg@euromail.se> wrote:
>>>> 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,
>>
>> No, we are not talking about non-rectangular shape here. Envelop is
>> always a rectangle. By rectangle above, I meant 2 touches.
>>
>> An envelop that includes number of touches offers us more information
>> than a rectangle does.
>
>
> All you need to do to know how many points there are is to count them. :-)

Yeah, you are right. What if the client does not have the information
to count them if we do not pass them over?

Ping