Bug 1999552 - forward_key_event() is broken in gtk4
Summary: forward_key_event() is broken in gtk4
Alias: None
Product: Fedora
Classification: Fedora
Component: gtk4
Version: 35
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
Assignee: Kalev Lember
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2021-08-31 10:04 UTC by Mike FABIAN
Modified: 2022-12-13 15:34 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2022-12-13 15:34:42 UTC
Type: Bug

Attachments (Terms of Use)
Video showing the problem, neither forwarding a space nor returning it as False works. (178.21 KB, video/mp4)
2021-08-31 10:04 UTC, Mike FABIAN
no flags Details

Description Mike FABIAN 2021-08-31 10:04:43 UTC
Created attachment 1819321 [details]
Video showing the problem, neither forwarding a space nor returning it as False works.

In the Search Entry in gtk4-demo sending a space with forward_key_event()
produces the letter “n” instead of “ ”, sending the space key
by returning False from do_process_key_event() puts the space *before* the 
committed string, i.e. typing "a " results in " a" when the space is send
by returning False.

[mfabian@fedora ~]$ rpm -qf /usr/bin/gtk4-demo

See attached video.

Comment 1 fujiwara 2021-09-03 11:18:59 UTC
As I said before, currently ibus core calculates the keycodes from keysyms if engines forward keycode=0 and it's no longer handled in gtk4.

The following change works fine with me.

--- /usr/share/ibus-typing-booster/engine/hunspell_table.py.orig
+++ /usr/share/ibus-typing-booster/engine/hunspell_table.py
@@ -5267,7 +5267,7 @@ class TypingBoosterEngine(IBus.Engine):
             # https://bugzilla.redhat.com/show_bug.cgi?id=1291238
             if self._qt_im_module_workaround:
                 return self._return_false(key.val, key.code, key.state)
-            self.forward_key_event(key.val, key.code, key.state)
+            self.forward_key_event(key.val, 0, key.state)
             return True
         if key.unicode:

Comment 2 fujiwara 2021-09-03 11:24:12 UTC
I mean ibus in Xorg. I don't discuss about the issue in mutter yet.

Comment 3 Ben Cotton 2022-11-29 17:03:57 UTC
This message is a reminder that Fedora Linux 35 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 35 on 2022-12-13.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '35'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, change the 'version' 
to a later Fedora Linux version.

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able to fix it before Fedora Linux 35 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora Linux, you are encouraged to change the 'version' to a later version
prior to this bug being closed.

Comment 4 Ben Cotton 2022-12-13 15:34:42 UTC
Fedora Linux 35 entered end-of-life (EOL) status on 2022-12-13.

Fedora Linux 35 is no longer maintained, which means that it
will not receive any further security or bug fix updates. As a result we
are closing this bug.

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