Bug 372012 - Window Decoration Context Menu does Not Respect QT_SCREEN_SCALE_FACTORS=2
Summary: Window Decoration Context Menu does Not Respect QT_SCREEN_SCALE_FACTORS=2
Status: RESOLVED FIXED
Alias: None
Product: kwin
Classification: Plasma
Component: core (show other bugs)
Version: 5.8.3
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
: 391904 (view as bug list)
Depends on:
Blocks:
 
Reported: 2016-11-03 09:52 UTC by Jason A. Donenfeld
Modified: 2018-03-16 15:46 UTC (History)
4 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:

Attachments
bad-context-menu-padding-on-kwin-window-border.png (21.62 KB, image/png)
2016-11-03 09:53 UTC, Jason A. Donenfeld 		Details
good-context-menu-padding-in-dolphin.png (42.49 KB, image/png)
2016-11-03 09:53 UTC, Jason A. Donenfeld 		Details
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Description Jason A. Donenfeld 2016-11-03 09:52:41 UTC 
Despite having QT_SCREEN_SCALE_FACTORS=2 set, kwin does not respect this for some reason. See the two attached screenshots comparing dolphin and kwin context menu padding.
Comment 1 Jason A. Donenfeld 2016-11-03 09:53:06 UTC 
Created attachment 101994 [details]
bad-context-menu-padding-on-kwin-window-border.png
Comment 2 Jason A. Donenfeld 2016-11-03 09:53:28 UTC 
Created attachment 101995 [details]
good-context-menu-padding-in-dolphin.png
Comment 3 Jason A. Donenfeld 2016-11-03 09:56:36 UTC 
This is similar to bug #372013, which involves plasmashell.
Comment 4 Martin Flöser 2016-11-03 10:20:42 UTC 
@David: opinions?
Comment 5 David Edmundson 2017-02-20 16:35:35 UTC 
He's correct, Qt scaling in kwin is turned off. Unfortunately turning it on would cause havoc, and require changes all over kwin. It isn't worth it right now, and we can't do scaling on a per-window basis.

Plasmashell also has the same issue with context menus. I can see us making a pure QtQuick menu at some point in the near future which can then use Plasma scaling.

With the current wayland scaling patchset the situation is different, but not perfect. The menu will be scaled so all icons look normal but it will have the resolution of a normal DPI device.
Comment 6 David Edmundson 2017-05-12 21:30:55 UTC 
Wayland scaling patchset merged. 
My drop down looks fine.

Fixed in 5.10 /if/ you're using the proper wayland scaling.
Comment 7 David Edmundson 2018-03-16 15:39:18 UTC 
*** Bug 391904 has been marked as a duplicate of this bug. ***