GNU bug report logs - #52232
29.0.50; Can scroll horizontally with pixel-scroll-precision-mode

Previous Next

To reply to this bug, email your comments to 52232 AT debbugs.gnu.org.

Toggle the display of automated, internal messages from the tracker.

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

From: Yuan Fu <casouri <at> gmail.com>
To: Bug Report Emacs <bug-gnu-emacs <at> gnu.org>
Subject: 29.0.50; Can scroll horizontally with pixel-scroll-precision-mode
Date: Wed, 1 Dec 2021 14:02:01 -0800

I'm not sure if this is only on Mac with its touch pad, but if I enable
pixel-scroll-precision-mode and mouse-wheel-tilt-scroll, slowly
scrolling horizontally has no effect. If I scroll very fast, I can get
the screen to scroll, but scrolling slowly doesn't move the screen. If I
disable pixel-scroll-precision-mode, both fast and slow scroll works.

To be percise:

(progn (setq mouse-wheel-tilt-scroll t)
       (pixel-scroll-precision-mode))


In GNU Emacs 29.0.50 (build 1, x86_64-apple-darwin21.1.0, NS appkit-2113.00 Version 12.0.1 (Build 21A559))
of 2021-11-29 built on Brown
Repository revision: 50379fb78d04deb9f422b906add126219a1a775d
Repository branch: master
Windowing system distributor 'Apple', version 10.3.2113
System Description:  macOS 12.0.1

Configured using:
'configure --with-pdumper=yes --with-ns'

Configured features:
ACL DBUS GLIB GNUTLS JSON LCMS2 LIBXML2 MODULES NOTIFY KQUEUE NS PDUMPER
PNG RSVG THREADS TOOLKIT_SCROLL_BARS WEBP XIM ZLIB

Important settings:
  value of $LC_CTYPE: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  pixel-scroll-precision-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  show-paren-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  indent-tabs-mode: t
  transient-mark-mode: t

Load-path shadows:
None found.

Features:
(url-util url-parse url-vars help-mode pp shadow sort mail-extr emacsbug
message mailcap yank-media rmc puny dired dired-loaddefs rfc822 mml
mml-sec epa derived epg rfc6068 epg-config gnus-util rmail
rmail-loaddefs auth-source cl-seq eieio eieio-core cl-macs
eieio-loaddefs password-cache json map text-property-search seq gv
byte-opt bytecomp byte-compile cconv mm-decode mm-bodies mm-encode
mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047
rfc2045 ietf-drums mm-util mail-prsvr mail-utils vc-git diff-mode
easy-mmode vc-dispatcher cus-start cus-load pixel-scroll time-date
subr-x cl-loaddefs cl-lib iso-transl tooltip eldoc paren electric
uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel
term/ns-win ns-win ucs-normalize mule-util term/common-win tool-bar dnd
fontset image regexp-opt fringe tabulated-list replace newcomment
text-mode lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow
isearch easymenu timer select scroll-bar mouse jit-lock font-lock syntax
font-core term/tty-colors frame minibuffer cl-generic cham georgian
utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean
japanese eucjp-ms cp51932 hebrew greek romanian slovak czech european
ethiopic indian cyrillic chinese composite emoji-zwj charscript charprop
case-table epa-hook jka-cmpr-hook help simple abbrev obarray
cl-preloaded nadvice button loaddefs faces cus-face macroexp files
window text-properties overlay sha1 md5 base64 format env code-pages
mule custom widget keymap hashtable-print-readable backquote threads
dbusbind kqueue cocoa ns lcms2 multi-tty make-network-process emacs)

Memory information:
((conses 16 71791 14809)
(symbols 48 8373 2)
(strings 32 23143 1657)
(string-bytes 1 704324)
(vectors 16 15346)
(vector-slots 8 201889 14653)
(floats 8 33 422)
(intervals 56 561 0)
(buffers 992 14))

Message #8 received at 52232 <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Yuan Fu <casouri <at> gmail.com>
Cc: 52232 <at> debbugs.gnu.org
Subject: Re: bug#52232: 29.0.50; Can scroll horizontally with
 pixel-scroll-precision-mode
Date: Thu, 02 Dec 2021 11:21:57 +0800

Yuan Fu <casouri <at> gmail.com> writes:

> I'm not sure if this is only on Mac with its touch pad, but if I enable
> pixel-scroll-precision-mode and mouse-wheel-tilt-scroll, slowly
> scrolling horizontally has no effect. If I scroll very fast, I can get
> the screen to scroll, but scrolling slowly doesn't move the screen. If I
> disable pixel-scroll-precision-mode, both fast and slow scroll works.
>
> To be percise:
>
> (progn (setq mouse-wheel-tilt-scroll t)
>        (pixel-scroll-precision-mode))

pixel-scroll-precision-mode doesn't work when the window is hscrolled
(at present).

I will fix that at some point.

Message #11 received at 52232 <at> debbugs.gnu.org (full text, mbox):

From: Yuan Fu <casouri <at> gmail.com>
To: Po Lu <luangruo <at> yahoo.com>
Cc: 52232 <at> debbugs.gnu.org
Subject: Re: bug#52232: 29.0.50; Can scroll horizontally with
 pixel-scroll-precision-mode
Date: Thu, 2 Dec 2021 11:23:10 -0800

> On Dec 1, 2021, at 7:21 PM, Po Lu <luangruo <at> yahoo.com> wrote:
> 
> Yuan Fu <casouri <at> gmail.com> writes:
> 
>> I'm not sure if this is only on Mac with its touch pad, but if I enable
>> pixel-scroll-precision-mode and mouse-wheel-tilt-scroll, slowly
>> scrolling horizontally has no effect. If I scroll very fast, I can get
>> the screen to scroll, but scrolling slowly doesn't move the screen. If I
>> disable pixel-scroll-precision-mode, both fast and slow scroll works.
>> 
>> To be percise:
>> 
>> (progn (setq mouse-wheel-tilt-scroll t)
>>       (pixel-scroll-precision-mode))
> 
> pixel-scroll-precision-mode doesn't work when the window is hscrolled
> (at present).
> 
> I will fix that at some point.

Fantastic!

Yuan

Message #14 received at 52232 <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Yuan Fu <casouri <at> gmail.com>
Cc: 52232 <at> debbugs.gnu.org
Subject: Re: bug#52232: 29.0.50; Can scroll horizontally with
 pixel-scroll-precision-mode
Date: Sat, 04 Dec 2021 19:27:36 +0800

Yuan Fu <casouri <at> gmail.com> writes:

>> On Dec 1, 2021, at 7:21 PM, Po Lu <luangruo <at> yahoo.com> wrote:
>> 
>> Yuan Fu <casouri <at> gmail.com> writes:
>> 
>>> I'm not sure if this is only on Mac with its touch pad, but if I enable
>>> pixel-scroll-precision-mode and mouse-wheel-tilt-scroll, slowly
>>> scrolling horizontally has no effect. If I scroll very fast, I can get
>>> the screen to scroll, but scrolling slowly doesn't move the screen. If I
>>> disable pixel-scroll-precision-mode, both fast and slow scroll works.
>>> 
>>> To be percise:
>>> 
>>> (progn (setq mouse-wheel-tilt-scroll t)
>>>       (pixel-scroll-precision-mode))
>> 
>> pixel-scroll-precision-mode doesn't work when the window is hscrolled
>> (at present).
>> 
>> I will fix that at some point.
>
> Fantastic!
>
> Yuan

Precision pixel scrolling should now work when the window is hscrolled.
However, you may want to turn off automatic hscroll for it to work
nicely.

Please test, thanks.

Message #19 received at 52232 <at> debbugs.gnu.org (full text, mbox):

From: Yuan Fu <casouri <at> gmail.com>
To: Po Lu <luangruo <at> yahoo.com>
Cc: 52232 <at> debbugs.gnu.org
Subject: Re: bug#52232: 29.0.50; Can scroll horizontally with
 pixel-scroll-precision-mode
Date: Sun, 5 Dec 2021 20:42:51 -0800

> 
> Precision pixel scrolling should now work when the window is hscrolled.
> However, you may want to turn off automatic hscroll for it to work
> nicely.
> 
> Please test, thanks.

Yes, it works. Not pixel-scrolled, but I can scroll no problem. Thanks!

Yuan

Message #22 received at 52232 <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Yuan Fu <casouri <at> gmail.com>
Cc: 52232 <at> debbugs.gnu.org
Subject: Re: bug#52232: 29.0.50; Can scroll horizontally with
 pixel-scroll-precision-mode
Date: Mon, 06 Dec 2021 12:44:26 +0800

Yuan Fu <casouri <at> gmail.com> writes:

>> 
>> Precision pixel scrolling should now work when the window is hscrolled.
>> However, you may want to turn off automatic hscroll for it to work
>> nicely.
>> 
>> Please test, thanks.
>
> Yes, it works. Not pixel-scrolled, but I can scroll no problem. Thanks!

What do you mean by "not pixel-scrolled"?  The scrolling should be done
pixel-wise even if the window is hscrolled.  If it is not, that is a
bug.

Message #25 received at 52232 <at> debbugs.gnu.org (full text, mbox):

From: Yuan Fu <casouri <at> gmail.com>
To: Po Lu <luangruo <at> yahoo.com>
Cc: 52232 <at> debbugs.gnu.org
Subject: Re: bug#52232: 29.0.50; Can scroll horizontally with
 pixel-scroll-precision-mode
Date: Sun, 5 Dec 2021 20:54:54 -0800

> On Dec 5, 2021, at 8:44 PM, Po Lu <luangruo <at> yahoo.com> wrote:
> 
> Yuan Fu <casouri <at> gmail.com> writes:
> 
>>> 
>>> Precision pixel scrolling should now work when the window is hscrolled.
>>> However, you may want to turn off automatic hscroll for it to work
>>> nicely.
>>> 
>>> Please test, thanks.
>> 
>> Yes, it works. Not pixel-scrolled, but I can scroll no problem. Thanks!
> 
> What do you mean by "not pixel-scrolled"?  The scrolling should be done
> pixel-wise even if the window is hscrolled.  If it is not, that is a
> bug.

My bad, I actually tested with pixel-scroll-precision-mode off. When I turn the mode on, the situation has not changed, slowly scrolling horizontally still does’t scroll. Tested on emacs -Q on latest master on a Mac just as before.

Yuan

Message #28 received at 52232 <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Yuan Fu <casouri <at> gmail.com>
Cc: 52232 <at> debbugs.gnu.org
Subject: Re: bug#52232: 29.0.50; Can scroll horizontally with
 pixel-scroll-precision-mode
Date: Mon, 06 Dec 2021 13:14:43 +0800

Yuan Fu <casouri <at> gmail.com> writes:

> My bad, I actually tested with pixel-scroll-precision-mode off. When I
> turn the mode on, the situation has not changed, slowly scrolling
> horizontally still does’t scroll. Tested on emacs -Q on latest master
> on a Mac just as before.

Do you mean that horizontal scrolling doesn't work?  What happens if you
hold down shift and move the mouse wheel vertically?

Thanks.

Message #31 received at 52232 <at> debbugs.gnu.org (full text, mbox):

From: Yuan Fu <casouri <at> gmail.com>
To: Po Lu <luangruo <at> yahoo.com>
Cc: 52232 <at> debbugs.gnu.org
Subject: Re: bug#52232: 29.0.50; Can scroll horizontally with
 pixel-scroll-precision-mode
Date: Sun, 5 Dec 2021 22:35:34 -0800

> On Dec 5, 2021, at 9:14 PM, Po Lu <luangruo <at> yahoo.com> wrote:
> 
> Yuan Fu <casouri <at> gmail.com> writes:
> 
>> My bad, I actually tested with pixel-scroll-precision-mode off. When I
>> turn the mode on, the situation has not changed, slowly scrolling
>> horizontally still does’t scroll. Tested on emacs -Q on latest master
>> on a Mac just as before.
> 
> Do you mean that horizontal scrolling doesn't work?  What happens if you
> hold down shift and move the mouse wheel vertically?
> 
> Thanks.

The window scrolls horizontally, but it is not pixel-scroll.

Thanks,
Yuan

Message #34 received at 52232 <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Yuan Fu <casouri <at> gmail.com>
Cc: 52232 <at> debbugs.gnu.org
Subject: Re: bug#52232: 29.0.50; Can scroll horizontally with
 pixel-scroll-precision-mode
Date: Mon, 06 Dec 2021 14:53:45 +0800

Yuan Fu <casouri <at> gmail.com> writes:

>> On Dec 5, 2021, at 9:14 PM, Po Lu <luangruo <at> yahoo.com> wrote:
>> 
>> Yuan Fu <casouri <at> gmail.com> writes:
>> 
>>> My bad, I actually tested with pixel-scroll-precision-mode off. When I
>>> turn the mode on, the situation has not changed, slowly scrolling
>>> horizontally still does’t scroll. Tested on emacs -Q on latest master
>>> on a Mac just as before.
>> 
>> Do you mean that horizontal scrolling doesn't work?  What happens if you
>> hold down shift and move the mouse wheel vertically?
>> 
>> Thanks.

> The window scrolls horizontally, but it is not pixel-scroll.

I'm afraid we might be miscommunicating: Emacs currently doesn't expose
pixel-level horizontal scrolling to Lisp code, so it isn't possible to
have pixel-based horizontal scrolling.

Is the problem you're experiencing that pixel-scroll-precision-mode
doesn't work when scrolling _vertically_ when the window is hscrolled
(which is what I thought you meant), or is it that horizontal scrolling
is not pixel-based?

The latter is currently unsupported, but the former should work now.

Message #37 received at 52232 <at> debbugs.gnu.org (full text, mbox):

From: Yuan Fu <casouri <at> gmail.com>
To: Po Lu <luangruo <at> yahoo.com>
Cc: 52232 <at> debbugs.gnu.org
Subject: Re: bug#52232: 29.0.50; Can scroll horizontally with
 pixel-scroll-precision-mode
Date: Tue, 7 Dec 2021 13:06:12 -0800

> 
> I'm afraid we might be miscommunicating: Emacs currently doesn't expose
> pixel-level horizontal scrolling to Lisp code, so it isn't possible to
> have pixel-based horizontal scrolling.
> 
> Is the problem you're experiencing that pixel-scroll-precision-mode
> doesn't work when scrolling _vertically_ when the window is hscrolled
> (which is what I thought you meant), or is it that horizontal scrolling
> is not pixel-based?
> 
> The latter is currently unsupported, but the former should work now.

Sorry for the delay. The problem is that, I cannot scroll horizontally when pixel-scroll-precision-mode is enabled. So if I swipe horizontally on the touch pad on my Mac machine, the window doesn’t move. When pixel-scroll-recision-mode is disabled, the window scrolls horizontally as expected. 

This only happens (doesn’t scroll) when I swipe slowly on the touch pad, if I swipe really hard and really fast, the window does scroll (horizontally). Maybe there is something wrong with ns term’s reported numbers?

Yuan

Message #40 received at 52232 <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Yuan Fu <casouri <at> gmail.com>
Cc: 52232 <at> debbugs.gnu.org
Subject: Re: bug#52232: 29.0.50; Can scroll horizontally with
 pixel-scroll-precision-mode
Date: Wed, 08 Dec 2021 08:54:36 +0800

Yuan Fu <casouri <at> gmail.com> writes:

> Sorry for the delay. The problem is that, I cannot scroll horizontally
> when pixel-scroll-precision-mode is enabled. So if I swipe
> horizontally on the touch pad on my Mac machine, the window doesn’t
> move. When pixel-scroll-recision-mode is disabled, the window scrolls
> horizontally as expected.
>
> This only happens (doesn’t scroll) when I swipe slowly on the touch
> pad, if I swipe really hard and really fast, the window does scroll
> (horizontally). Maybe there is something wrong with ns term’s reported
> numbers?

It works here for me in a macOS virtual machine.

Could you tell me what happens when you run describe-key and swipe
sideways on your touchpad?

Thanks.

Message #43 received at 52232 <at> debbugs.gnu.org (full text, mbox):

From: Yuan Fu <casouri <at> gmail.com>
To: Po Lu <luangruo <at> yahoo.com>
Cc: 52232 <at> debbugs.gnu.org
Subject: Re: bug#52232: 29.0.50; Can scroll horizontally with
 pixel-scroll-precision-mode
Date: Fri, 10 Dec 2021 11:10:29 -0800

> 
> Could you tell me what happens when you run describe-key and swipe
> sideways on your touchpad?

It gives <wheel-right>:

  <wheel-right> at that spot runs the command mwheel-scroll
  <wheel-right> (translated from <double-wheel-right>) at that spot runs the command mwheel-scroll
  <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
  <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
  <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
  <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
  <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
  <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
  <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
  <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
  <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
  <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
  <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
  <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll

Thanks,
Yuan

Message #46 received at 52232 <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Yuan Fu <casouri <at> gmail.com>
Cc: 52232 <at> debbugs.gnu.org
Subject: Re: bug#52232: 29.0.50; Can scroll horizontally with
 pixel-scroll-precision-mode
Date: Sat, 11 Dec 2021 09:36:52 +0800

Yuan Fu <casouri <at> gmail.com> writes:

>> 
>> Could you tell me what happens when you run describe-key and swipe
>> sideways on your touchpad?
>
> It gives <wheel-right>:
>
>   <wheel-right> at that spot runs the command mwheel-scroll
>   <wheel-right> (translated from <double-wheel-right>) at that spot runs the command mwheel-scroll
>   <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
>   <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
>   <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
>   <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
>   <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
>   <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
>   <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
>   <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
>   <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
>   <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
>   <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
>   <wheel-right> (translated from <triple-wheel-right>) at that spot runs the command mwheel-scroll
>
> Thanks,
> Yuan

Then the problem is not in pixel-scroll-precision-mode, I think.

I did some work on NS mouse wheel handling a few days ago.  Could you
update and try again?  Thanks.

Message #49 received at 52232 <at> debbugs.gnu.org (full text, mbox):

From: Yuan Fu <casouri <at> gmail.com>
To: Po Lu <luangruo <at> yahoo.com>
Cc: 52232 <at> debbugs.gnu.org
Subject: Re: bug#52232: 29.0.50; Can scroll horizontally with
 pixel-scroll-precision-mode
Date: Sat, 11 Dec 2021 14:35:14 -0800

> 
> Then the problem is not in pixel-scroll-precision-mode, I think.
> 
> I did some work on NS mouse wheel handling a few days ago.  Could you
> update and try again?  Thanks.

Thank you for following up on this. I pulled the master and tried again, and the situation has not changed. I have no knowledge of the nsterm to investigate by myself, sorry :-( If there is anything that I can do to help, please let me know.

I’ll ask if my friends that uses a Mac can try master and see if they have the same problem.

Yuan

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.