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bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X
From: |
Po Lu |
Subject: |
bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X |
Date: |
Thu, 18 Nov 2021 17:17:25 +0800 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.60 (gnu/linux) |
Eli Zaretskii <eliz@gnu.org> writes:
> A Lisp object could have different types, one each for every use case
> we want to support. For example, we could use a single object there,
> which in your case will be a list of 2 values, and in other cases will
> have more members. We do this kind of stuff all the time, including
> in specifying POSITION in various events -- there are a gazillion of
> different forms of POSITION already in Emacs. I see no reason to
> change the format when all we need to do is add one more form of
> POSITION.
That makes sense, I'll modify the change in a bit to report scroll
deltas as a pair of (DELTA-X . DELTA-Y) instead.
> Sorry, I don't understand: XInput2 knows about FRAME_PIXEL_HEIGHT of
> our frames?
Indeed it does. It's the window server, after all.
>> An amount of scrolling that would previously generate a `mouse-4' or
>> `mouse-5' event.
> That doesn't really answer my question. Let me ask it differently:
> how does "scroll unit" differ from "every time the wheel is moved"?
Basically, even tiny movements of the scroll wheel will cause XInput 2
to generate wheel events. This makes the behavior stay like the
original by default, where you have to scroll 96 or so pixels before a
wheel event is actually sent. (This is generally true, but certain mice
may behave differently.)
> I might have ideas once I understand what you are trying to say ;-)
Thanks, I hope what I just said clears things up a bit.
- bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X, Po Lu, 2021/11/16
- bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X, Robert Pluim, 2021/11/16
- bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X, Po Lu, 2021/11/16
- bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X, Po Lu, 2021/11/16
- bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X, Eli Zaretskii, 2021/11/17
- bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X, Po Lu, 2021/11/17
- bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X, Eli Zaretskii, 2021/11/18
- bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X,
Po Lu <=
- bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X, Po Lu, 2021/11/18
- bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X, Eli Zaretskii, 2021/11/19
- bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X, Po Lu, 2021/11/19
- bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X, Eli Zaretskii, 2021/11/19
- bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X, Po Lu, 2021/11/19
- bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X, Eli Zaretskii, 2021/11/20
- bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X, Eli Zaretskii, 2021/11/19
- bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X, Po Lu, 2021/11/19
- bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X, Eli Zaretskii, 2021/11/19
- bug#51891: 29.0.50; [PATCH] Pixel delta support for wheel events on X, Po Lu, 2021/11/20