1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
[From nobody Wed Mar 14 19:37:19 2012
Return-Path: <desktop-devel-list-bounces@gnome.org>
X-Original-To: list-gnome@vitters.nl
Delivered-To: list-gnome@vitters.nl
Received: from menubar.gnome.org (menubar.gnome.org [209.132.180.169])
by bkor.dhs.org (Postfix) with ESMTP id 689F9500302
for <list-gnome@vitters.nl>; Wed, 14 Mar 2012 19:17:57 +0100 (CET)
Received: from menubar.gnome.org (localhost.localdomain [127.0.0.1])
by menubar.gnome.org (Postfix) with ESMTP id B9016750450;
Wed, 14 Mar 2012 18:17:55 +0000 (UTC)
X-Original-To: desktop-devel-list@gnome.org
Delivered-To: desktop-devel-list@gnome.org
Received: from localhost (localhost.localdomain [127.0.0.1])
by menubar.gnome.org (Postfix) with ESMTP id 6630075027F
for <desktop-devel-list@gnome.org>;
Wed, 14 Mar 2012 18:17:49 +0000 (UTC)
X-Virus-Scanned: by amavisd-new at gnome.org
X-Spam-Flag: NO
X-Spam-Score: -2.6
X-Spam-Level:
X-Spam-Status: No, score=-2.6 tagged_above=-999 required=2
tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7] autolearn=ham
Received: from menubar.gnome.org ([127.0.0.1])
by localhost (menubar.gnome.org [127.0.0.1]) (amavisd-new, port 10024)
with ESMTP id 2kwSFYWApAvY for <desktop-devel-list@gnome.org>;
Wed, 14 Mar 2012 18:17:30 +0000 (UTC)
Received: from youngberry.canonical.com (youngberry.canonical.com
[91.189.89.112])
by menubar.gnome.org (Postfix) with ESMTP id 1E503750244
for <desktop-devel-list@gnome.org>;
Wed, 14 Mar 2012 18:17:21 +0000 (UTC)
Received: from anancy-258-1-19-225.w90-39.abo.wanadoo.fr ([90.39.122.225]
helo=[192.168.0.11]) by youngberry.canonical.com with esmtpsa
(TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71)
(envelope-from <seb128@ubuntu.com>) id 1S7slB-0004dT-Lq
for desktop-devel-list@gnome.org; Wed, 14 Mar 2012 18:17:17 +0000
Message-ID: <4F60E0AC.5090408@ubuntu.com>
Date: Wed, 14 Mar 2012 19:17:16 +0100
From: Sebastien Bacher <seb128@ubuntu.com>
User-Agent: Mozilla/5.0 (X11; Linux i686;
rv:11.0) Gecko/20120309 Thunderbird/11.0
MIME-Version: 1.0
To: desktop-devel-list@gnome.org
Subject: Dealing with GTK 3.3.18 scrolling handling changes for GNOME 3.4
X-BeenThere: desktop-devel-list@gnome.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: GNOME Desktop Development List <desktop-devel-list.gnome.org>
List-Unsubscribe: <http://mail.gnome.org/mailman/options/desktop-devel-list>,
<mailto:desktop-devel-list-request@gnome.org?subject=unsubscribe>
List-Archive: <http://mail.gnome.org/archives/desktop-devel-list/>
List-Post: <mailto:desktop-devel-list@gnome.org>
List-Help: <mailto:desktop-devel-list-request@gnome.org?subject=help>
List-Subscribe: <http://mail.gnome.org/mailman/listinfo/desktop-devel-list>,
<mailto:desktop-devel-list-request@gnome.org?subject=subscribe>
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset="us-ascii"; Format="flowed"
Errors-To: desktop-devel-list-bounces@gnome.org
Sender: desktop-devel-list-bounces@gnome.org
Hi everyone,
GTK 3.3.18 and smooth scrolling landing created quite some issues which
seems to have been mostly unnoticed, unaddressed so far, since the hard
freeze for GNOME 3.4 is next week I'm bringing the topic there.
Some of the details there might be wrong and I'm happy to be corrected,
it's just my understanding of the changes
* widgets need to opt-in for scroll events (GDK_SCROLL_MASK), that makes
scrolling stop working in applications using custom widgets
(example:
http://git.gnome.org/browse/nautilus/commit/?id=04116ab2876412445c788091be07d7f7321a4a94)
* if you are on xserver 1.12 with xinput 2.2 your application stop
receiving GDK_SCROLL_DOWN and GDK_SCROLL_UP events, but receive
GDK_SCROLL_SMOOTH with an increment instead
that change seems to create quite some issue, it breaks for example
mouse wheel scrolling over sound sliders in the control center, or
scrolling in nautilus compact view
Grepping around in my work tree I see there are quite a lot of GNOME
components using GDK_SCROLL_UP,DOWN, I guess those will stop working as
they should.
Nautilus fixed a such issue in
http://git.gnome.org/browse/nautilus/commit/?id=1a76e044a2c9b834d00c4ea30f1e3af3321d8cdd
It's likely that other applications will need to add extra cases to
handle the new way
I think that's an issue we should look at addressing before 3.4, either
by doing some "compat" work in GTK (i.e keep emiting the scroll up down
events as well as the smooth ones if possible) or by patching the
applications, the rdepends list is likely not trivial though...
Thoughts?
--
Sebastien Bacher
_______________________________________________
desktop-devel-list mailing list
desktop-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/desktop-devel-list
]
|
