SUMMARY The inversion effect for whole applications is respected in Desktop-Overview and Present-all-Windows. But the two task switcher Cover-switch and Flip-switch show glaring white un-inverted windows. STEPS TO REPRODUCE 1. open some application 2. invert it so that black becomes white & white becomes black (you can assign a keyboard shortcut for this effect) 3. check the present all windows/desktops (Ctrl+F8 or Ctrl+F9 or Ctrl+F10) - the window is presented dark 4. Use Cover-switch / Flip-switch OBSERVED RESULT The Task switchers show the uninverted window, same for preview picture, when hovering it's taskbar button EXPECTED RESULT The window shall always be inverted, no matter which effect / desktop element shows a preview SOFTWARE/OS VERSIONS Operating System: Kubuntu 22.04 KDE Plasma Version: 5.24.4 KDE Frameworks Version: 5.92.0 Qt Version: 5.15.3 Kernel Version: 5.15.0-39-generic (64-bit) Graphics Platform: X11 Processors: 8 × Intel® Core™ i7-4700MQ CPU @ 2.40GHz Memory: 15.5 GiB of RAM Graphics Processor: Mesa Intel® HD Graphics 4600 ADDITIONAL INFORMATION This is not bug 450230 - it is not merely a design issue, but an accessibility issue, as there is a reason, to invert glaring white windows stopping them from flashing my fading eye-sight
Fixed in Plasma 5.26 already. Unfortunately the change was too invasive to backport to older Plasma versions.
I think closing this was a misunderstanding of the "Inverted" kwin effect for the background of cover/flip switchers which got fixed :) I can still reproduce both on X and Wayland with latest kwin master. This happens for every QML effect that uses the WindowThumbnailItem or DesktopThumbnailItem, including all of the window switchers, task manager previews, etc.
I think I did misunderstand, sorry. That said I'm not sure I can reproduce the actual issue. When I enable the Invert effect, all the window colors invert properly for me. Can you attach a screenshot (or better yet, a screen recording) that shows the issue happening?
Created attachment 150208 [details] Kate window is inverted but preview thumbnail is not While not the original bug reporter, I'll post an screenshot for what I understand the bug refers to. In the screenshot, the Kate window is inverted by the effect, but the preview thumbnail on the task manager is not. I'm taking the preview as an example for simplicity, as it is using the same component (WindowThumbnailItem) as other effects such as tabbox switchers, overview, etc.
I see now. However I can't reproduce that on Wayland. Perhaps it's X11-specific?
(In reply to Ismael Asensio from comment #4) > Created attachment 150208 [details] > Kate window is inverted but preview thumbnail is not Yes, that is exactly what this bug shall be about ;) - The preview when hovering the task bar - The miniature window when using cover-switch - The miniature window when using flip-switch All three are not inverted for me.