bug#28443: 26.0.50; Pause when fullscreening when ns-use-native-fullscreen is nil on macOS

bug#28443: 26.0.50; Pause when fullscreening when ns-use-native-fullscreen is nil on macOS

[Aaron Jensen]

When ns-use-native-fullscreen is nil and a frame is set to fullscreen,
there is a slight pause before the frame goes fullscreen. I believe the
pause is about the same length as the animation when native fullscreen
is used, so I'm wondering if there's some timing code in there that can
be disabled when non-native fullscreen is being used.

To repro on macOS:

emacs -Q

eval:

    (setq ns-use-native-fullscreen nil)
    (modify-frame-parameters nil '((maximized) (fullscreen . fullboth)))


In GNU Emacs 26.0.50 (build 1, x86_64-apple-darwin16.7.0, NS appkit-1504.83 Version 10.12.6 (Build 16G29))
 of 2017-09-13 built on aaron-mbpt.local
Repository revision: a0202fdc85ddc36b73a1c7c4f2d3ec45cd22c5e1
Windowing system distributor 'Apple', version 10.3.1504
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bug#28443: 26.0.50; Pause when fullscreening when ns-use-native-fullscreen is nil on macOS

[Alan Third]

On Wed, Sep 13, 2017 at 05:15:49AM -0700, Aaron Jensen wrote:
> 
> When ns-use-native-fullscreen is nil and a frame is set to fullscreen,
> there is a slight pause before the frame goes fullscreen. I believe the
> pause is about the same length as the animation when native fullscreen
> is used, so I'm wondering if there's some timing code in there that can
> be disabled when non-native fullscreen is being used.
> 
> To repro on macOS:
> 
> emacs -Q
> 
> eval:
> 
>     (setq ns-use-native-fullscreen nil)
>     (modify-frame-parameters nil '((maximized) (fullscreen . fullboth)))

Confirmed. The animation is definitely disabled (and doesn’t actually
do anything here even when it is enabled), so I don’t know what’s
going on.
-- 
Alan Third

bug#28443: 26.0.50; Pause when fullscreening when ns-use-native-fullscreen is nil on macOS

[Alan Third]

On Wed, Sep 13, 2017 at 05:15:49AM -0700, Aaron Jensen wrote:
> 
> When ns-use-native-fullscreen is nil and a frame is set to fullscreen,
> there is a slight pause before the frame goes fullscreen. I believe the
> pause is about the same length as the animation when native fullscreen
> is used, so I'm wondering if there's some timing code in there that can
> be disabled when non-native fullscreen is being used.

Found it. In ns_fullscreen_hook in nsterm.m there is a timer:

      /* Old style fs don't initiate correctly if created from
         init/default-frame alist, so use a timer (not nice...).
      */
      [NSTimer scheduledTimerWithTimeInterval: 0.5 target: view
                                     selector: @selector (handleFS)
                                     userInfo: nil repeats: NO];

if I replace the timer with

    [view handleFS]

it works absolutely fine, but I have to assume there are situations
where it doesn’t.
-- 
Alan Third

bug#28443: 26.0.50; Pause when fullscreening when ns-use-native-fullscreen is nil on macOS

[Aaron Jensen]

On Wed, Sep 13, 2017 at 12:27 PM, Alan Third <alan@idiocy.org> wrote:
> On Wed, Sep 13, 2017 at 05:15:49AM -0700, Aaron Jensen wrote:
>>
>> When ns-use-native-fullscreen is nil and a frame is set to fullscreen,
>> there is a slight pause before the frame goes fullscreen. I believe the
>> pause is about the same length as the animation when native fullscreen
>> is used, so I'm wondering if there's some timing code in there that can
>> be disabled when non-native fullscreen is being used.
>
> Found it. In ns_fullscreen_hook in nsterm.m there is a timer:
>
>       /* Old style fs don't initiate correctly if created from
>          init/default-frame alist, so use a timer (not nice...).
>       */
>       [NSTimer scheduledTimerWithTimeInterval: 0.5 target: view
>                                      selector: @selector (handleFS)
>                                      userInfo: nil repeats: NO];
>
> if I replace the timer with
>
>     [view handleFS]
>
> it works absolutely fine, but I have to assume there are situations
> where it doesn’t.

My guess is that the timer was there to sync w/ the animation. If the
animation is disabled, there shouldn't be a timer, but if it is, there
should be. This is just a guess.

Aaron

> --
> Alan Third

bug#28443: 26.0.50; Pause when fullscreening when ns-use-native-fullscreen is nil on macOS

[Alan Third]

On Wed, Sep 13, 2017 at 12:33:48PM -0700, Aaron Jensen wrote:
> On Wed, Sep 13, 2017 at 12:27 PM, Alan Third <alan@idiocy.org> wrote:
> > On Wed, Sep 13, 2017 at 05:15:49AM -0700, Aaron Jensen wrote:
> >>
> >> When ns-use-native-fullscreen is nil and a frame is set to fullscreen,
> >> there is a slight pause before the frame goes fullscreen. I believe the
> >> pause is about the same length as the animation when native fullscreen
> >> is used, so I'm wondering if there's some timing code in there that can
> >> be disabled when non-native fullscreen is being used.
> >
> > Found it. In ns_fullscreen_hook in nsterm.m there is a timer:
> >
> >       /* Old style fs don't initiate correctly if created from
> >          init/default-frame alist, so use a timer (not nice...).
> >       */
> >       [NSTimer scheduledTimerWithTimeInterval: 0.5 target: view
> >                                      selector: @selector (handleFS)
> >                                      userInfo: nil repeats: NO];
> >
> > if I replace the timer with
> >
> >     [view handleFS]
> >
> > it works absolutely fine, but I have to assume there are situations
> > where it doesn’t.
> 
> My guess is that the timer was there to sync w/ the animation. If the
> animation is disabled, there shouldn't be a timer, but if it is, there
> should be. This is just a guess.

I should have read it a bit more closely. The comment’s saying there’s
a problem when

    (add-to-list ’frame-default-alist ’(fullscreen . fullboth))

is used, and sure enough, when I set it and create a new frame, it
draws incorrectly.

I notice that changing back from fullscreen results in the top of the
emacs window being hidden behind the toolbar. Clearly non‐native
fullscreen has some resizing issues.

It can be (correctly) emulated with:

    (set-frame-parameter nil 'undecorated t)
    (setq ns-auto-hide-menu-bar 1)
    (tool-bar-mode -1)
    (toggle-frame-maximized)

which makes me wonder if we even need this code and could move it to
lisp?
-- 
Alan Third

bug#28443: 26.0.50; Pause when fullscreening when ns-use-native-fullscreen is nil on macOS

[Aaron Jensen]

[-- Attachment #1.1: Type: text/plain, Size: 2222 bytes --]

I can no longer reproduce any issues with setting the frame-default-alist,
so this patch removes the timer workaround. I'm using macOS 15.1, no idea
if that's relevant or not.


Aaron


On Wed, Sep 13, 2017 at 1:13 PM, Alan Third <alan@idiocy.org> wrote:

> On Wed, Sep 13, 2017 at 12:33:48PM -0700, Aaron Jensen wrote:
>
> On Wed, Sep 13, 2017 at 12:27 PM, Alan Third <alan@idiocy.org> wrote:
>
> On Wed, Sep 13, 2017 at 05:15:49AM -0700, Aaron Jensen wrote:
>
> When ns-use-native-fullscreen is nil and a frame is set to fullscreen,
> there is a slight pause before the frame goes fullscreen. I believe the
> pause is about the same length as the animation when native fullscreen is
> used, so I'm wondering if there's some timing code in there that can be
> disabled when non-native fullscreen is being used.
>
> Found it. In ns_fullscreen_hook in nsterm.m there is a timer:
>
> /* Old style fs don't initiate correctly if created from
> init/default-frame alist, so use a timer (not nice...).
> */
> [NSTimer scheduledTimerWithTimeInterval: 0.5 target: view selector:
> @selector (handleFS)
> userInfo: nil repeats: NO];
>
> if I replace the timer with
>
> [view handleFS]
>
> it works absolutely fine, but I have to assume there are situations where
> it doesn’t.
>
> My guess is that the timer was there to sync w/ the animation. If the
> animation is disabled, there shouldn't be a timer, but if it is, there
> should be. This is just a guess.
>
> I should have read it a bit more closely. The comment’s saying there’s a
> problem when
>
> (add-to-list ’frame-default-alist ’(fullscreen . fullboth))
>
> is used, and sure enough, when I set it and create a new frame, it draws
> incorrectly.
>
> I notice that changing back from fullscreen results in the top of the
> emacs window being hidden behind the toolbar. Clearly non‐native fullscreen
> has some resizing issues.
>
> It can be (correctly) emulated with:
>
> (set-frame-parameter nil 'undecorated t)
> (setq ns-auto-hide-menu-bar 1)
> (tool-bar-mode -1)
> (toggle-frame-maximized)
>
> which makes me wonder if we even need this code and could move it to lisp?
> --
> Alan Third
>

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[-- Attachment #2: 0001-src-nsterm.m-ns_fullscreen_hook-Remove-timer-workaro.patch --]
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From 176e3a3410e12ba5b59c6ddb927c8cb3099f3b7f Mon Sep 17 00:00:00 2001
From: Aaron Jensen <aaronjensen@gmail.com>
Date: Sat, 16 Nov 2024 20:32:41 -0800
Subject: [PATCH] * src/nsterm.m (ns_fullscreen_hook): Remove timer workaround

---
 src/nsterm.m | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/src/nsterm.m b/src/nsterm.m
index 47ce20455c5..dabc36ce018 100644
--- a/src/nsterm.m
+++ b/src/nsterm.m
@@ -1984,16 +1984,6 @@ Hide the window (X11 semantics)
   if (!FRAME_VISIBLE_P (f))
     return;
 
-   if (! [view fsIsNative] && f->want_fullscreen == FULLSCREEN_BOTH)
-    {
-      /* Old style fs don't initiate correctly if created from
-         init/default-frame alist, so use a timer (not nice...).  */
-      [NSTimer scheduledTimerWithTimeInterval: 0.5 target: view
-                                     selector: @selector (handleFS)
-                                     userInfo: nil repeats: NO];
-      return;
-    }
-
   block_input ();
   [view handleFS];
   unblock_input ();
-- 
2.47.0

bug#28443: 26.0.50; Pause when fullscreening when ns-use-native-fullscreen is nil on macOS

[Alan Third]

On Sat, Nov 16, 2024 at 11:37:13PM -0500, Aaron Jensen wrote:
> I can no longer reproduce any issues with setting the frame-default-alist,
> so this patch removes the timer workaround. I'm using macOS 15.1, no idea
> if that's relevant or not.

Looks like it's good on 10.14 too. The rewrite of the frame creation
code a few years ago probably fixed it.
-- 
Alan Third

bug#28443: 26.0.50; Pause when fullscreening when ns-use-native-fullscreen is nil on macOS

[Aaron Jensen]

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On Sun, Nov 17, 2024 at 3:58 AM, Alan Third <alan@idiocy.org> wrote:

> Looks like it's good on 10.14 too. The rewrite of the frame creation code
> a few years ago probably fixed it.
>

Ah, that makes sense. Thanks for testing. Anything else we should check
before installing this patch?

Related, would you mind testing and reviewing my patch on bug#52085 as well?

Thank you,

Aaron

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bug#28443: 26.0.50; Pause when fullscreening when ns-use-native-fullscreen is nil on macOS

[Alan Third]

On Sun, Nov 17, 2024 at 11:22:12AM -0500, Aaron Jensen wrote:
> On Sun, Nov 17, 2024 at 3:58 AM, Alan Third <alan@idiocy.org> wrote:
> 
> > Looks like it's good on 10.14 too. The rewrite of the frame creation code
> > a few years ago probably fixed it.
> >
> 
> Ah, that makes sense. Thanks for testing. Anything else we should check
> before installing this patch?

I suppose ideally it would be nice to check it on some *ancient*
version of macOS (10.6 or something?), just in case it's different,
but good luck finding someone...

> Related, would you mind testing and reviewing my patch on bug#52085 as well?

I don't see a patch on that bug thread, and it's been closed for a
while. Is that the right number?
-- 
Alan Third

bug#28443: 26.0.50; Pause when fullscreening when ns-use-native-fullscreen is nil on macOS

[Aaron Jensen]

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On Sun, Nov 17, 2024 at 10:27 AM, Alan Third <alan@idiocy.org> wrote:

> I suppose ideally it would be nice to check it on some *ancient* version
> of macOS (10.6 or something?), just in case it's different, but good luck
> finding someone...
>

How far back should we really support for macOS? I get free software
support going back far, but for macOS I think it's a bit more reasonable to
be OK with reducing support. That may go against the principles, however.


> Related, would you mind testing and reviewing my patch on bug#52085 as
> well?
>
> I don't see a patch on that bug thread, and it's been closed for a while.
> Is that the right number?
>


No, wrong one, sorry: bug#59790

https://lists.gnu.org/archive/html/bug-gnu-emacs/2024-11/msg00853.html

Thanks,

Aaron

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bug#28443: 26.0.50; Pause when fullscreening when ns-use-native-fullscreen is nil on macOS

[Alan Third]

On Sun, Nov 17, 2024 at 06:34:36PM +0000, Aaron Jensen wrote:
> On Sun, Nov 17, 2024 at 10:27 AM, Alan Third <alan@idiocy.org> wrote:
> 
> > I suppose ideally it would be nice to check it on some *ancient* version
> > of macOS (10.6 or something?), just in case it's different, but good luck
> > finding someone...
> >
> 
> How far back should we really support for macOS? I get free software
> support going back far, but for macOS I think it's a bit more reasonable to
> be OK with reducing support. That may go against the principles, however.

I don't know. Last time I did any major work supporting all the way
back to 10.6 wasn't much hassle, although if I broke something I
wouldn't know.

I always thought that if it became too much work to support old
versions, then dropping that support would be perfectly reasonable.

> > Related, would you mind testing and reviewing my patch on bug#52085 as
> > well?
> >
> > I don't see a patch on that bug thread, and it's been closed for a while.
> > Is that the right number?
> >
> 
> 
> No, wrong one, sorry: bug#59790
> 
> https://lists.gnu.org/archive/html/bug-gnu-emacs/2024-11/msg00853.html

I'll have a look.

-- 
Alan Third

bug#28443: 26.0.50; Pause when fullscreening when ns-use-native-fullscreen is nil on macOS

[Alan Third]

On Sat, Nov 16, 2024 at 11:37:13PM -0500, Aaron Jensen wrote:
> I can no longer reproduce any issues with setting the frame-default-alist,
> so this patch removes the timer workaround. I'm using macOS 15.1, no idea
> if that's relevant or not.

Pushed to master as 20aa29b03739c496106f166ef84562c602b9ddb2.
-- 
Alan Third