Bug 347949

Summary: plasma panel does not set window size hints when panel is on right screen edge
Product: [Plasma] plasmashell Reporter: Diggory Hardy <kde2>
Component: PanelAssignee: Plasma Bugs List <plasma-bugs-null>
Status: RESOLVED FIXED    
Severity: normal CC: bugseforuns, kde, notmart, notuxius
Priority: NOR    
Version First Reported In: 5.3.0   
Target Milestone: 1.0   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Diggory Hardy 2015-05-19 14:08:59 UTC 
After chatting with Mr Grässlin about an issue, he noted a likely cause:

1) Window sizing hints are not set by a panel on the right screen edge. Martin's comments:
[14:39] <mgraesslin> QRect::right()
[14:40] <mgraesslin> "Note that for historical reasons this function returns left() + width() - 1; use x() + width() to retrieve the true x-coordinate."
[14:40] <mgraesslin> so the strut is not set correctly if it's on the right edge

The symptom: when the panel is on the right screen edge, a maximised window either covers or goes under the panel, instead of stopping short.

xprop on the panel (right screen edge): https://paste.kde.org/ptmna4ijh#line-55
(bottom edge): https://paste.kde.org/py7owqmsu#line-7

When the panel is on another screen edge, it appears that sizing hints are not absent but are incorrect (due to QT_DEVICE_PIXEL_RATIO=2, dimensions in the panel size hint are about half of what they actually are).

Reproducible: Always
Comment 1 Marco Martin 2015-05-20 09:49:05 UTC 
as far i know struts can't be set on screen edges between two screens as it would break multiscreen
Comment 2 Diggory Hardy 2015-05-20 10:44:46 UTC 
What's that got to do with it? In my case this is a single-screen set-up, and in any case there are no limits as to screen edges another screen may be attached to.
Comment 3 Marco Martin 2016-11-07 18:22:31 UTC 
this issue has been recently fixed, now struts in between screens are respected
Comment 4 Alexander Mentyu 2018-03-02 13:06:00 UTC 
is this issue could be safely closed?
Comment 5 Diggory Hardy 2018-03-02 14:53:45 UTC 
I would guess so.