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bug#10920: 24.0.93; Poor response to display size changes

From: Dave Abrahams
Subject: bug#10920: 24.0.93; Poor response to display size changes
Date: Sat, 03 Mar 2012 14:08:37 -0500
User-agent: Gnus/5.130004 (Ma Gnus v0.4) Emacs/24.0.94 (darwin)

on Sat Mar 03 2012, Jan Djärv <jan.h.d-AT-swipnet.se> wrote:

> Hello.
> 3 mar 2012 kl. 16:48 skrev Dave Abrahams:
>> on Sat Mar 03 2012, Jan Djärv <jan.h.d-AT-swipnet.se> wrote:
>>> Hello.
>>> 1 mar 2012 kl. 15:56 skrev Dave Abrahams <address@hidden>:
>>>> It seems to me:
>>>> * When the display size changes, any visible frames that aren't completely
>>>> visible should be moved/resised so they are
>>> This is not as easy as it seems. If you have Emacs spanning several
>>> monitors and one of them changes it is not obvious what to do. One
>>> could special case it for the single monitor case I guess.
>> It may have not been easy 15-20 years ago, but today it is a solved
>> problem.  Many other applications have worked out ways to deal with such
>> changes.  Emacs could simply emulate one of those.
> Can you give an example of an application that behaves sane when
> spread out over four monitors and one of them changes?

I don't have four monitors, so no.  But IMO that's not the common case
anyway.  The common case is when a laptop is plugged/unplugged from a
single or multi-monitor setup.

>>>> * The same goes for "fullscreen" (which IIUC is only supported via a
>>>> patch that lives outside emacs, but I mention it here for
>>>> completeness).
>>> The 10.7 style fullscreen does not have this problem, which is an
>>> argument for just supporting that type of fullscreen in 24.2.
>> Not really, IMO.  On the mac there's a green button in the upper left of
>> every application window that maximizes it.  You have to respond to that
>> button somehow and maximizing the frame is the right (and consistent)
>> response.
> Maximizing and fullscreen is not the same thing.

I know.  I thought you were arguing for trying to handle this deficiency
in Emacs' handling of maximized (and other) frames by ignoring it and
telling people to use fullscreen instead.

By the way, 10.7-style fullscreen is incredibly frustrating for someone
like me who wants to use all of one screen for Emacs but doesn't want
his other monitors to go to waste.  10.7 will just put a gray background
on the other screens and they become unusable :(

Dave Abrahams
BoostPro Computing

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