From: Po Lu <luangruo@yahoo.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: emacs-devel@gnu.org
Subject: Re: master e37eb7f: Add support for pixel wheel deltas on NS
Date: Sat, 27 Nov 2021 18:54:42 +0800 [thread overview]
Message-ID: <87sfvhc1hp.fsf@yahoo.com> (raw)
In-Reply-To: <83y259zxgz.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 27 Nov 2021 12:47:40 +0200")
Eli Zaretskii <eliz@gnu.org> writes:
>> From: Po Lu <luangruo@yahoo.com>
>> Cc: rpluim@gmail.com, emacs-devel@gnu.org
>> Date: Sat, 27 Nov 2021 15:14:13 +0800
>>
>> >> On a reasonably sized frame that would be 1 to 2 pixels.
>>
>> > Is this with a mouse wheel or with a touchpad? I was asking about the
>> > mouse wheel.
>>
>> This is with a mouse wheel that supports pixel values, i.e., a mouse
>> wheel that has no fixed "steps". (A mouse wheel with fixed steps would
>> however report a value of 1.0: every XInput 2 program I tried will
>> scroll the close-to-100 pixels that implies on each turn of such a
>> wheel.)
>
> OK, thanks.
>
> Btw, I'm confused by the documentation of the enhanced mouse-wheel
> events. The manual says
>
> @item (wheel-up @var{position})
> @itemx (wheel-down @var{position})
> [...]
> The event may have additional arguments after
> @var{position}. The third argument after @var{position}, if present,
> is a pair of the form @w{@code{(@var{x} . @var{y})}}, where @var{x}
> and @var{y} are the number of pixels to scroll by in each axis.
> It mentions the 3rd argument (starting from 1, I presume, given the
> format of the event shown in @item). But the code in pixel-scroll.el
> does:
It says "the third argument after @var{position}", which is the fifth
element (1-based) in the lispy event, as position is the second element
(again, one-based) of the event.
But I agree that the wording is confusing and can probably be improved
to just mention that the fifth element contains the pixel information.
Thanks.
next prev parent reply other threads:[~2021-11-27 10:54 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20211125030922.2353.1129@vcs0.savannah.gnu.org>
[not found] ` <20211125030924.7258E2094B@vcs0.savannah.gnu.org>
2021-11-25 10:26 ` master e37eb7f: Add support for pixel wheel deltas on NS Robert Pluim
2021-11-25 10:34 ` Po Lu
2021-11-25 10:47 ` Robert Pluim
2021-11-25 11:02 ` Eli Zaretskii
2021-11-26 0:39 ` Po Lu
2021-11-26 6:35 ` Eli Zaretskii
2021-11-26 7:00 ` Po Lu
2021-11-26 8:17 ` Eli Zaretskii
2021-11-26 9:37 ` Po Lu
2021-11-26 11:32 ` Eli Zaretskii
2021-11-26 11:44 ` Po Lu
2021-11-26 16:55 ` Eli Zaretskii
2021-11-27 0:02 ` Po Lu
2021-11-27 6:09 ` Eli Zaretskii
2021-11-27 6:41 ` Po Lu
2021-11-27 7:05 ` Eli Zaretskii
2021-11-27 7:14 ` Po Lu
2021-11-27 10:47 ` Eli Zaretskii
2021-11-27 10:54 ` Po Lu [this message]
2021-11-27 11:03 ` Eli Zaretskii
2021-11-27 11:05 ` Po Lu
2021-11-27 11:13 ` Po Lu
2021-11-27 11:32 ` Eli Zaretskii
2021-11-27 11:34 ` Po Lu
2021-11-27 11:40 ` Eli Zaretskii
2021-11-27 11:44 ` Po Lu
2021-11-27 12:02 ` Eli Zaretskii
2021-11-27 12:11 ` Po Lu
2021-11-27 12:36 ` Eli Zaretskii
2021-11-27 12:48 ` Po Lu
2021-11-26 11:48 ` Eli Zaretskii
2021-11-26 12:05 ` Po Lu
2021-11-26 12:23 ` Eli Zaretskii
2021-11-26 12:37 ` Po Lu
2021-11-26 19:39 ` Alan Third
2021-11-26 19:45 ` Eli Zaretskii
2021-11-26 19:54 ` Alan Third
2021-11-28 2:54 ` Po Lu
2021-11-28 7:53 ` Eli Zaretskii
2021-11-28 7:58 ` Po Lu
2021-11-28 8:28 ` Eli Zaretskii
2021-11-29 7:39 ` Po Lu
2021-11-29 12:50 ` Eli Zaretskii
2021-11-29 13:19 ` Po Lu
2021-11-25 11:00 ` Eli Zaretskii
2021-11-25 18:46 ` Stefan Monnier
2021-11-25 18:58 ` Eli Zaretskii
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