Bug 419236 - Task Manager does not display minimized state if Compositor is configured to always keep window thumbnails
Summary: Task Manager does not display minimized state if Compositor is configured to ...
Status: CLOSED NOT A BUG
Alias: None
Product: plasmashell
Classification: Plasma
Component: Task Manager and Icons-Only Task Manager (show other bugs)
Version: 5.18.3
Platform: Neon Linux
: NOR normal
Target Milestone: 1.0
Assignee: Eike Hein
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-03-25 15:47 UTC by popov895
Modified: 2020-03-25 21:16 UTC (History)
3 users (show)

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Description popov895 2020-03-25 15:47:51 UTC 
SUMMARY

Task Manager does not display minimized state if Compositor is configured to always keep window thumbnails.

STEPS TO REPRODUCE

1. Open "System Settings" > "Display and Monitor" > "Compositor"
2. For "Keep window thumbnails" select "Always" option
3. Apply changes
4. Minimize any window

OBSERVED RESULT

Task Manager doesn't display minimized state.

EXPECTED RESULT

Task Manager display minimized state.

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: KDE Neon 5.18
KDE Plasma Version: 5.18.3
KDE Frameworks Version: 5.68.0
Qt Version: 5.14.1
Comment 1 David Edmundson 2020-03-25 16:48:24 UTC 
See the massive warning next to "keep window thumbnails"
Comment 2 popov895 2020-03-25 17:23:32 UTC 
Minimized windows != suspended window, because "minimize is an action in GUI operating systems to hide a window but keep the program running in the background". Thus, the task manager should ALWAYS display the minimized state of the window, regardless of the composer's settings. So this is definitely a bug.
Comment 3 David Edmundson 2020-03-25 18:54:17 UTC 
It most definitely isn't a bug.

You've just set a flag telling kwin to not really minimise windows. It naturally breaks anything that tries detects if windows are minimised.

As per the /massive warning/.
Comment 4 popov895 2020-03-25 19:33:07 UTC 
So, what exactly happens when I click the Minimize button when "Keep window thumbnails" is set to "Always"? Does the Compositor just not render this window on the screen? And what's the difference between "Never" and "Only for Shown Windows" (in both cases, thumbnails are displayed)? Sorry for the flood.
Comment 5 popov895 2020-03-25 21:16:32 UTC 
And one more thing. Even if I set “Save window thumbnails” to “Only for Shown Windows”, then go to the task manager settings (I use the Icons-only Task Manager) and check the box “Highlight windows when hovering over tasks”, now I can see the "previews" of even minimized windows. Can this trick be applied to tooltips?