Bug 489580

Summary: Cannot scroll into the settings window of certain wallpaper plugins
Product: [Applications] systemsettings Reporter: Archisman Panigrahi <apandada1>
Component: kcm_wallpaperAssignee: Plasma Bugs List <plasma-bugs>
Status: CONFIRMED ---    
Severity: normal CC: meven29, meven, nate
Priority: NOR    
Version: 6.1.1   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
See Also: https://bugs.kde.org/show_bug.cgi?id=492654
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: screenshot-of-issue

Description Archisman Panigrahi 2024-07-02 03:56:31 UTC 
Created attachment 171262 [details]
screenshot-of-issue

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SUMMARY
I installed this plugin https://github.com/luisbocanegra/plasma-smart-video-wallpaper-reborn/, but I cannot scroll in the system settings window.

STEPS TO REPRODUCE
1. Install plasma-smart-video-wallpaper-reborn
2. Try to change the wallpaper settings in System Settings > Wallpaper and enable this plugin

OBSERVED RESULT
There is no scrollbar and some settings are buried down below, and cannot be accessed (due to no scrollbar).

EXPECTED RESULT
There should be a scrollbar

SOFTWARE/OS VERSIONS

Operating System: EndeavourOS 
KDE Plasma Version: 6.1.1
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.2



ADDITIONAL INFORMATION

Note that kcm_screenlocker is also affected.

Also reported the bug (https://github.com/luisbocanegra/plasma-smart-video-wallpaper-reborn/issues/28) to the plugin developer, who suggested reporting it here.
Comment 1 Nate Graham 2024-07-03 23:07:07 UTC 
Can reproduce. I guess we need to make this page scrollable.

Affects the KScreenLocker KCM as well.
Comment 2 Nate Graham 2024-07-04 01:59:53 UTC 
This is a tricky problem.

We need the page itself to be scrollable, just in case the wallpaper plugin assumes it's been placed on a scrollable page and doesn't provide its own internal scrollview.

But if the wallpaper plugin does have an internal scrollview, we want its implicit height on the parent page to be exactly the available height so the page *doesn't* become scrollable — or else there would be two adjacent scrollbars.

I think we would have to introspect the plugin object, but I can't see a feasible way to do it here.

Any ideas here, Ivan?
Comment 3 ratijas 2024-07-04 23:13:09 UTC 
> Any ideas here, Ivan?

Not much, other than "just use more pages", but I see how some people might see that as a waste of space.

QtQuick/ListView aren't really designed to cooperate with each other in a compostable way, and you can't easily/safely use implicingHeight/contentHeight.
Comment 4 Nate Graham 2024-07-22 20:18:23 UTC 
Then I guess the question is how it's working in the Plasma desktop configuration window. Seems like we need to replicate that in the wallpaper and screen locking KCMs.
Comment 5 Méven Car 2024-09-06 14:36:59 UTC 
(In reply to Nate Graham from comment #4)
> Then I guess the question is how it's working in the Plasma desktop
> configuration window. Seems like we need to replicate that in the wallpaper
> and screen locking KCMs.

The other way to set dialog option (right on the desktop > wallpaper probably still work.