Bug 423158

Summary:	Window positioning unstable
Product:	[Plasma] kwin	Reporter:	Fonkle <fonkle>
Component:	compositing	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	kde
Priority:	NOR
Version:	5.18.5
Target Milestone:	---
Platform:	Kubuntu
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	xprop output for the Krita Manage Resources dialog: wrong placement xprop output for the Krita Manage Resources dialog: ok placement

Description Fonkle 2020-06-18 14:03:30 UTC

SUMMARY

When used on KDE Plasma, the window position of the 'Manage Resources' dialog in Krita is wrong about half of the times it is opened. I have uploaded a video to Youtube illustrating the misplaced dialog:

https://www.youtube.com/watch?v=qIErkJPqC5k


STEPS TO REPRODUCE
1. Open Krita
2. Go to Settings -> Manage Resources
3. Repeat a few times if needed

OBSERVED RESULT

The dialog is sometimes (seemingly random) positioned correctly and sometimes eeroneously near the top left of the screen.

EXPECTED RESULT
The dialog is always positioned correctly.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Kubuntu 20.04
(available in About System)
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8

ADDITIONAL INFORMATION
Positioning inside both QWidget::exec() and QWidget::open() both seem to be affected.

Comment 1 David Edmundson 2020-06-18 15:17:38 UTC

But still within the screen correctly? Sort of the same behaviour if you were to open a new app?


>Positioning inside both QWidget::exec() and QWidget::open() both seem to be affected.

That's spoken like a dev, is the transient parent set?

Before I recompile all of krita, can I have the output of xprop and clicking on the newly popped out window.

Comment 2 Fonkle 2020-06-18 20:27:54 UTC

Created attachment 129498 [details]
xprop output for the Krita Manage Resources dialog: wrong placement

Comment 3 Fonkle 2020-06-18 20:28:17 UTC

Created attachment 129499 [details]
xprop output for the Krita Manage Resources dialog: ok placement

Comment 4 Fonkle 2020-06-18 20:36:13 UTC

I have attached the output for both a good and bad positioned Manage Resources dialog in Krita. The only property that is different is the 'user specified location'.

I have filed this bug with Krita before (https://bugs.kde.org/show_bug.cgi?id=423097) and suggested its devs to fix it by explicitly specifying the position when exec-ing the dialog. That however turned out to be not-done in Krita, since it leaves positioning to the window manager.

Strangely, the other dialogs in Krita work as intended.

Comment 5 Fonkle 2020-06-18 20:41:48 UTC

Setting the parent of the dialog to the current MainWindow was committed in the krita/4.3 branch on 2020-06-07:

https://invent.kde.org/graphics/krita/-/commit/09cd150ba44bd8d81eb4a499349730b682b38524)

But that didn't fix the issue.

Comment 6 Vlad Zahorodnii 2023-01-25 13:31:50 UTC

Can't reproduce it with krita 4.4.4. If the issue is still present for you, please report it to krita developers.

krita should not place the dialog itself. It should just set the transient parent information and let the window manager place the dialog.

Comment 7 Fonkle 2023-01-25 20:25:25 UTC

Bug seems to have been resolved (for a while?). Resolved in <= 5.1.5. Great!