From: Trey Peacock <gpg@treypeacock.com>
To: Po Lu <luangruo@yahoo.com>
Cc: Morgan Smith <morgan.j.smith@outlook.com>, emacs-devel@gnu.org
Subject: Re: PGTK-related misconceptions
Date: Tue, 19 Apr 2022 23:02:08 +0000 [thread overview]
Message-ID: <87pmlcad91.fsf@treypeacock.com> (raw)
In-Reply-To: <87mtghg0j6.fsf@yahoo.com>
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"Po Lu" <luangruo@yahoo.com> writes:
> Trey Peacock <gpg@treypeacock.com> writes:
>
>> Neither of the WMs I mentioned use GNOME Shell, but they do both use
>> wlroots. Looking into this, it seems that any wlroots based Wayland
>> compositor will use GDK_MOD4_MASK as Super. However, mutter (GNOME's
>> WM) uses GDK_SUPER_MASK. Rebuilding emacs with the below patch seems
>> to have fixed the issue. I'm not sure if there could be further
>> implications for pgtk_emacs_to_gtk_modifiers.
>
> GDK_MOD4_MASK is a real modifier. GDK_SUPER_MASK is a "virtual
> modifier" mask.
>
> The entire point of that change was to rely on GDK to compute the
> correspondence between real modifiers and virtual modifiers instead of
> doing it ourselves, since a real modifier can mean any number of virtual
> modifiers and vice versa.
It does not seem to be a requirement of GTK 3.2 or XKB to send virtual
modifiers. The only compositor I have come across that actually sends a
virtual modifier is mutter/GNOME. Neither wlroots nor Weston, the
Wayland reference implementation, send them. I'm unsure about Plasma,
but I believe this highlights an issue with the development of pgtk, if
it is meant to be targeted towards wayland users it should be tested
against more than just one compositor.
> Hard-coding the meaning of GDK_MOD4_MASK would be a step backwards.
The experience of a user updating Emacs and realizing a key is no longer
recognized, without any notification or justification would also be a
step backwards.
> This seems to either be a bug in wlroots or GDK, so I suggest that a bug
> be filed with their developers.
I have spoken with devs of wlroots & wayland over IRC and they seem to
agree that it is not necessary. I don't mean to be adversarial but would
be happy to see this change amended to incorporate the entirety of
wayland compositors.
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next prev parent reply other threads:[~2022-04-19 23:02 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-18 21:50 PGTK-related misconceptions Trey
2022-04-19 0:59 ` Po Lu
2022-04-19 3:28 ` Trey Peacock
2022-04-19 4:27 ` Po Lu
2022-04-19 23:02 ` Trey Peacock [this message]
2022-04-20 0:48 ` Po Lu
2022-04-20 2:33 ` Trey Peacock
2022-04-20 4:05 ` Po Lu
2022-07-25 21:18 ` Akira Kyle
2022-07-26 2:08 ` Po Lu
2022-07-26 12:10 ` Lars Ingebrigtsen
2022-07-26 12:35 ` Po Lu
2022-07-29 14:26 ` Stefan Monnier
2022-07-30 0:58 ` Po Lu
2022-07-26 21:36 ` Akira Kyle
2022-07-27 2:48 ` Po Lu
2022-07-27 8:34 ` Trey Peacock
2022-07-27 9:10 ` Po Lu
2022-07-27 13:45 ` Trey Peacock
2022-07-27 13:52 ` Po Lu
2022-07-28 1:39 ` Akira Kyle
2022-07-28 2:50 ` Po Lu
-- strict thread matches above, loose matches on Subject: below --
2022-04-20 7:52 Trey Peacock
2022-04-20 8:25 ` Po Lu
2022-04-20 13:13 ` Brian Cully
[not found] <DM5PR03MB3163BBCF9626AD3B88900011C5EE9@DM5PR03MB3163.namprd03.prod.outlook.com>
2022-04-15 2:29 ` Po Lu
2022-04-15 7:11 ` Byung-Hee HWANG
2022-04-15 16:24 ` Eric Abrahamsen
2022-04-18 5:18 ` Sean Whitton
2022-04-18 5:31 ` Po Lu
2022-04-18 5:43 ` Sean Whitton
2022-04-18 5:57 ` Po Lu
2022-04-18 18:27 ` Sean Whitton
2022-04-18 19:49 ` Jim Porter
2022-04-19 1:02 ` Po Lu
2022-04-19 2:46 ` Sean Whitton
2022-04-19 2:18 ` Tim Cross
2022-04-19 5:56 ` Eli Zaretskii
2022-04-19 8:13 ` Tim Cross
2022-04-19 10:32 ` Eli Zaretskii
2022-04-19 9:10 ` Dirk-Jan C. Binnema
2022-04-19 10:42 ` Po Lu
2022-04-19 11:53 ` Phil Sainty
2022-04-19 13:58 ` Sean Whitton
2022-04-20 3:29 ` Phil Sainty
2022-04-20 4:48 ` Stefan Monnier
2022-04-19 16:51 ` Yuri Khan
2022-04-22 5:44 ` Pankaj Jangid
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