From: Matthias Clasen <matthias.clasen@gmail.com>
To: 23144@debbugs.gnu.org
Subject: bug#23144: shrinking windows with gtk 3.20
Date: Mon, 28 Mar 2016 16:52:47 -0400 [thread overview]
Message-ID: <CAFwd_vAFscqBnhg9Bbgi7XuaXUuv=p3c=GXz33ENftKDBFCmVA@mail.gmail.com> (raw)
We've observed that after
https://git.gnome.org/browse/gtk+/commit/?id=67ab00e01ec06d7b05a82c3d80b235ac6c4abfd2
emacs windows shrink to a small height, after initially appearing with
the expected size. For that reason, I have reverted to commit in the
stable gtk 3.20 branch.
But after looking a bit closer, I find that what emacs does is really
unsupportable: It handles X events behind GTK+'s back, and upon seeing
a map notify, it calls xg_frame_resized with -1, -1 for width and
height, which makes it call gdk_window_get_geometry to obtain the
current size. But at that point (before GTK+ has handled the map
notify), the function still returns the initial values of 1, 1, which
then leads eventually to a call of gtk_window_resize() with the small
height that we're seeing the window shrink to.
Therefore, I will bring back the reverted change in GTK+ master.
Possible workarounds/fixes in the emacs code:
1) Recognize when gdk_window_get_geometry returns the initial size
(1,1) and silently return as if the window was unmapped.
2) Just drop the xg_frame_resized call on MapNotify. Omitting it
doesn't have any noticeable negative consequences.
next reply other threads:[~2016-03-28 20:52 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-28 20:52 Matthias Clasen [this message]
2016-03-29 15:18 ` bug#23144: shrinking windows with gtk 3.20 martin rudalics
2016-03-29 16:02 ` Eli Zaretskii
2016-03-29 17:20 ` martin rudalics
2016-03-31 16:09 ` John Wiegley
2016-04-01 7:48 ` martin rudalics
2016-04-01 9:46 ` Eli Zaretskii
2016-04-02 0:03 ` Paul Eggert
2016-04-02 7:01 ` Eli Zaretskii
2016-04-02 15:19 ` Matthias Clasen
2016-04-02 15:47 ` Eli Zaretskii
2016-04-02 16:06 ` martin rudalics
2016-04-02 16:28 ` Eli Zaretskii
2016-04-02 17:27 ` Matthias Clasen
2016-04-02 17:32 ` Eli Zaretskii
2016-04-02 23:20 ` Matthias Clasen
2016-04-03 2:36 ` Eli Zaretskii
2016-05-16 6:53 ` Paul Eggert
2016-05-16 8:21 ` martin rudalics
2016-05-16 15:53 ` Eli Zaretskii
2016-05-16 17:11 ` Paul Eggert
2017-03-24 13:01 ` Ken Brown
2017-03-24 13:24 ` martin rudalics
2017-03-24 13:38 ` Ken Brown
2017-03-24 18:52 ` martin rudalics
2017-03-24 13:35 ` Eli Zaretskii
2017-03-24 14:08 ` Ken Brown
2017-03-24 14:27 ` Eli Zaretskii
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