Bug 480568

Summary: Widget opening animations whitening effect is not smooth
Product: [Plasma] plasmashell Reporter: John Dykes <98johndykes>
Component: PanelAssignee: Plasma Bugs List <plasma-bugs-null>
Status: RESOLVED FIXED    
Severity: minor CC: nate, niccolo.venerandi, niccolo
Priority: NOR Keywords: qt6
Version First Reported In: master   
Target Milestone: 1.0   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: Problem shown with slow animation speed

Description John Dykes 2024-01-30 22:08:52 UTC
Created attachment 165372 [details]
Problem shown with slow animation speed

SUMMARY
When you open a widget like Application Launcher or the clock widget, there is an animation which makes the window appear slightly white. This effect doesn't seem to apply immediately as the widget appears on the screen, and gives a kind of flickering appearance as the bottom of the window suddenly switches from a darker shade to having the whitening effect applied.

The effect is easiest to see with a slow animation speed.

STEPS TO REPRODUCE
1. Decrease the animation speed (to see the effect easily, although it still exists with a higher speed and causes a flickering effect)
2. Click on a widget like the system clock or application launcher

OBSERVED RESULT
The colour of the widget is darker at the bottom because the whitening effect is not applying immediately.

EXPECTED RESULT
The widget is a single uniform colour throughout the entire animation


SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 39
KDE Plasma Version: 6.0.80
KDE Frameworks Version: 5.249.0
Qt Version: 6.6.0
Kernel Version: 6.6.13-200.fc39.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 3600 6-Core Processor
Memory: 15.5 GiB of RAM
Graphics Processor: AMD Radeon RX 6750 XT

ADDITIONAL INFORMATION
Comment 1 Nate Graham 2024-01-30 23:15:07 UTC

*** This bug has been marked as a duplicate of bug 455173 ***
Comment 2 Niccolò Venerandi 2024-02-02 10:56:53 UTC
Mhh, no, this is its own bug; it's about the contrast effect being applied incorrectly, rather than having the contrast effect at all
Comment 3 Nate Graham 2024-02-21 20:09:10 UTC
I'm completely unable to reproduce the issue depicted in the screen recording with today's git master. I tested with the same bottom panel, Breeze Dark, slow animations, a colored wallpaper, and opening and closing Kickoff. Everything looks perfect to me. Are you still able to reproduce the issue, John?
Comment 4 Niccolò Venerandi 2024-02-21 20:38:02 UTC
This is fixed by https://invent.kde.org/plasma/libplasma/-/merge_requests/1044, sorry, missed it