From: "Charles A. Roelli" <charles@aurox.ch>
To: martin rudalics <rudalics@gmx.at>, Anders Lindgren <andlind@gmail.com>
Cc: 25818@debbugs.gnu.org, alan@idiocy.org
Subject: bug#25818: 25.2; frame moved off display does not return (OS X)
Date: Sat, 29 Apr 2017 13:15:10 +0200 [thread overview]
Message-ID: <39f502e9-7b31-a250-c964-8977689cad9b@aurox.ch> (raw)
In-Reply-To: <59046B35.1010808@gmx.at>
With the current master branch, a child frame might be constrained on OS
X 10.9+ with the "Spaces" windowing feature turned on, meaning that a
child frame could be forced back into the screen area -- so yes, there
could be a case where a child frame doesn't move together with its
parent. Maybe that will have to be fixed too; I'm on 10.6 though so I
can't test.
Otherwise, though, when child/parent frames are not brought off screen,
a child frame always moves with its parent.
My updated patch takes into account the case where "Spaces" is off or
unavailable -- if you read the part above what I added:
#ifdef NS_IMPL_COCOA
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_9
// If separate spaces is on, it is like each screen is independent.
There is
// no spanning of frames across screens.
if ([NSScreen screensHaveSeparateSpaces])
{
NSTRACE_MSG ("Screens have separate spaces");
frameRect = [super constrainFrameRect:frameRect toScreen:screen];
NSTRACE_RETURN_RECT (frameRect);
return frameRect;
}
#endif
there is nothing there to prevent a child frame from being constrained
-- so I will need input from somebody else on that.
On 29/04/2017 12:30, martin rudalics wrote:
> > I fixed the patch so that child frames are never constrained (after
> > some testing, it seems that a child frame cannot get stuck off screen
> > as long as its parent is still visible). To test this out, evaluate
> > the following from emacs -Q,
> >
> > (progn
> > (setq test-frame (make-frame `((parent-frame . ,(selected-frame)))))
> > (set-frame-position test-frame 0 500))
> >
> > and drag the parent frame down until its child is off screen.
>
> Does this mean that the child frame does _not_ move together with its
> parent frame? That would constitute a major deviation from the other
> platforms.
>
> martin
next prev parent reply other threads:[~2017-04-29 11:15 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-20 20:04 bug#25818: 25.2; frame moved off display does not return (OS X) Charles A. Roelli
2017-02-23 8:49 ` martin rudalics
2017-02-26 11:26 ` Charles A. Roelli
2017-02-26 15:40 ` Charles A. Roelli
2017-02-26 16:45 ` martin rudalics
2017-02-26 19:42 ` Charles A. Roelli
2017-02-27 8:05 ` martin rudalics
2017-02-27 10:34 ` Charles A. Roelli
2017-02-27 20:47 ` Charles A. Roelli
2017-02-28 10:12 ` Charles A. Roelli
2017-02-28 13:20 ` Anders Lindgren
2017-02-28 15:05 ` Charles A. Roelli
2017-02-28 20:35 ` Anders Lindgren
2017-02-28 22:05 ` Drew Adams
2017-03-01 10:48 ` Anders Lindgren
2017-03-01 16:10 ` Drew Adams
2017-03-19 19:38 ` Charles A. Roelli
2017-03-27 18:22 ` Anders Lindgren
2017-04-02 14:14 ` Charles A. Roelli
2017-04-03 8:33 ` Anders Lindgren
2017-04-08 20:40 ` Charles A. Roelli
2017-04-09 19:13 ` Anders Lindgren
2017-04-10 19:54 ` Charles A. Roelli
2017-04-11 18:35 ` Anders Lindgren
2017-04-27 19:14 ` Charles A. Roelli
2017-04-27 20:05 ` Alan Third
2017-04-28 17:33 ` Charles A. Roelli
2017-05-02 20:33 ` Alan Third
2017-05-05 18:30 ` Charles A. Roelli
2017-04-29 10:30 ` martin rudalics
2017-04-29 11:15 ` Charles A. Roelli [this message]
2017-04-29 14:51 ` Alan Third
2017-04-29 17:23 ` Anders Lindgren
2017-04-30 8:32 ` martin rudalics
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