Subject: bug#50269: 27.2; Request: use GTK continuous scroll events for smooth touchpad scrolling

From: Eli Zaretskii <[email-masked]>
Date: Tue, 31 Aug 2021 19:39:34 +0300

> From: Kévin Le Gouguec <[email-masked]>
> Cc: Alexander Huntley <[email-masked]>,  [email-masked]
> Date: Tue, 31 Aug 2021 18:33:13 +0200
> 
> With pixel-scroll-mode on, when pixel-resolution-fine-flag is nil (the
> default), I cannot get Emacs to scroll up by "just a few pixels",
> however small my movement on the touchpad.  Emacs always waits for
> "enough movement" to scroll up a complete line, although the *animation*
> is indeed done pixel-by-pixel (as opposed to line-by-line when
> pixel-scroll-mode is off).
> 
> On e.g. Mousepad (XFCE's text editor), if I move "just a bit" on the
> touchpad, the display moves by "just a few pixels", i.e. less than a
> full line.  FWIW setting pixel-resolution-fine-flag to 1 seems to allow
> Emacs to do the same.

So if pixel-resolution-fine-flag is set, the behavior is the expected
one, and we can conclude that Emacs passes this test?