GNU bug report logs - #5968
Problems with 'geometry' [GTK,Cygwin,trunk]

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Angelo Graziosi <angelo.graziosi <at> alice.it>
To: bug-gnu-emacs <bug-gnu-emacs <at> gnu.org>
Subject: Problems with 'geometry' [GTK,Cygwin,trunk]
Date: Sun, 18 Apr 2010 11:52:31 +0200

[Message part 1 (text/plain, inline)]

I have in .Xdefaults:

Emacs.geometry:         80x40-0+0

which has always started Emacs with the top-right corner (TRC) over the 
same corner of Desktop.

But now, the revisions 99918, 99920, 99922... of trunk (GTK build on 
Cygwin) starts Emacs with TRC *out* the Desktop! See the attached figure 
in [*]! :(

I suspect this is related:

src/ChangeLog:
==================================================
[...]
2010-04-13  Jan DjÃrv  <...>

* gtkutil.c (xg_set_geometry): Set geometry for PPosition also.
(x_wm_set_size_hint): Dont set position flags, gtk_window_parse_geometry
does that.
[...]
==================================================

Rev. 99880 works just fine... Indeed, reverting *only* the changes to 
'gtkutil.c' (applying 'gtkutil.c.revert_to_880.diff') and building rev. 
99922, Emacs starts as expected!! :-)

Perhaps these changes are the cause of the problems:

====================
[...]
-  if (user_position)
-    {
-      hint_flags &= ~GDK_HINT_POS;
-      hint_flags |= GDK_HINT_USER_POS;
-    }
[...]
====================

It seems that this problem is Cygwin specific, I can't reproduce it on 
GNU/Linux Kubuntu 9.10.

On Cygwin, it can be reproduced simply with:

$ emacs -Q --geometry 80x40-0+0 &

or

$ emacs -Q --geometry -0+0 &

Thanks,
Angelo.

---
[*] http://lists.gnu.org/archive/html/emacs-devel/2010-04/msg00772.html

[gtkutil.c.revert_to_880.diff (text/plain, attachment)]

Message #10 received at 5968-done <at> debbugs.gnu.org (full text, mbox):

From: Jan Djärv <jan.h.d <at> swipnet.se>
To: Angelo Graziosi <angelo.graziosi <at> alice.it>
Cc: 5968-done <at> debbugs.gnu.org
Subject: Re: bug#5968: Problems with 'geometry' [GTK,Cygwin,trunk]
Date: Sun, 18 Apr 2010 13:28:47 +0200

This is a combination of a race condition (frame is not visible when geometry 
is set), and the fact that the window manager doesn't honor gravity correctly.

I reinstalled the change below.  It is in principle redundant as Gtk+ sets 
this when parsing geometry, but the window manager doesn't seem to honor it 
when the window is later shown at a different size.

Marking as done.

	Jan D.


> Rev. 99880 works just fine... Indeed, reverting *only* the changes to 
> 'gtkutil.c' (applying 'gtkutil.c.revert_to_880.diff') and building rev. 
> 99922, Emacs starts as expected!! :-)
> 
> Perhaps these changes are the cause of the problems:
> 
> ====================
> [...]
> -  if (user_position)
> -    {
> -      hint_flags &= ~GDK_HINT_POS;
> -      hint_flags |= GDK_HINT_USER_POS;
> -    }
> [...]
> ====================
> 
> It seems that this problem is Cygwin specific, I can't reproduce it on 
> GNU/Linux Kubuntu 9.10.
> 

	Jan D.

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