Bug 506027

Summary:	Add ability to use scroll wheel to scroll through window previews
Product:	[Plasma] plasmashell	Reporter:	Riccardo Robecchi <sephiroth_pk>
Component:	Task Manager and Icons-Only Task Manager widgets	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	wishlist	CC:	cwo.kde, kdedev, nate, qydwhotmail
Priority:	NOR	Keywords:	accessibility, usability
Version First Reported In:	6.3.5
Target Milestone:	1.0
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Riccardo Robecchi 2025-06-23 09:14:48 UTC

SUMMARY
When enough windows of an application are open, the previews in the icons-only task manager become horizontally scrollable. However, this scrolling only happens if you click on the scrollbar and manually drag it. As this is very much error-prone, due to the preview pop-up disappearing instantly when the mouse leaves the area, it would be good to include the possibility to scroll using the mouse wheel. This would also help make the system better in terms of accessibility.

STEPS TO REPRODUCE
1. Have enough windows of a single application open so that the preview pop-up can be scrolled horizontally
2. Try to scroll through the previews

OBSERVED RESULT
You can only scroll by clicking-and-holding on the scrollbar, which is very difficult.

EXPECTED RESULT
You can scroll using the mouse wheel.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: KDE Neon
KDE Plasma Version: 6.3.5
KDE Frameworks Version: 6.14.0
Qt Version: 6.9.0

ADDITIONAL INFORMATION

Comment 1 TraceyC 2025-06-24 22:41:32 UTC

This seems like a reasonable quality of life improvement

Comment 2 cwo 2025-06-25 07:01:50 UTC

This actually works, but you need to scroll horizontally, not vertically. So only on devices/settings that allow horizontal scrolling - horizontal wheels, side-push wheels, touchpads, pointing sticks and similar push-and-move scrolling... The common case of a vertical-only mouse wheel is not supported.

Comment 3 Riccardo Robecchi 2025-06-25 07:04:32 UTC

(In reply to cwo from comment #2)
> This actually works, but you need to scroll horizontally, not vertically. So
> only on devices/settings that allow horizontal scrolling - horizontal
> wheels, side-push wheels, touchpads, pointing sticks and similar
> push-and-move scrolling... The common case of a vertical-only mouse wheel is
> not supported.

The point of the bug report is that it should, in order to improve accessibility (for everyone, as I find it very difficult to scroll horizontally currently). Horizontal scrolling with a mouse wheel (shift+mouse wheel) does not currently work, either.

Comment 4 Nate Graham 2025-06-25 18:35:34 UTC


*** This bug has been marked as a duplicate of bug 448504 ***