Bug 362501

Summary:	Shade/restore shrinks window height piece by piece
Product:	[Plasma] kwin	Reporter:	Peter Mühlenpfordt <devel>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	NOR
Version First Reported In:	5.5.5
Target Milestone:	---
Platform:	Kubuntu
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Screenshot of console window

Description Peter Mühlenpfordt 2016-04-30 13:36:14 UTC

Every time I shade (reduce to titlebar) and restore a window, it gets smaller in height. The console window e.g. is reduced by 4 pixel every shade/restore cycle.
I used the standard Breeze desktop theme and window decorations.
Release: Kubuntu 16.04 LTS


Reproducible: Always

Steps to Reproduce:
1. Open e.g. console window
2. Choose "Shade" from titlebar actions menu to reduce window
3. Choose "Shade" again to restore window


Actual Results:  
Window height is reduced by some pixels

Expected Results:  
Window should be the same height as before shade

Comment 1 Peter Mühlenpfordt 2016-04-30 13:38:25 UTC

Created attachment 98708 [details]
Screenshot of console window

(1) Original window
(2) "Shaded" window
(3) Restored window with reduced height

Comment 2 Martin Flöser 2016-05-11 08:33:10 UTC

I cannot confirm this behavior. I just created a test case for this bug report and the geometry gets restored properly.

I also just tried the exact same steps as you described and konsole does not shrink.

It's possible that I use a newer Qt version which fixed the problem.

Comment 3 Martin Flöser 2016-05-11 08:44:47 UTC

Git commit 568a036762fd80fc6c630c462969aee64ec6124d by Martin Gräßlin.
Committed on 11/05/2016 at 08:43.
Pushed by graesslin into branch 'master'.

[autotests] Add test case for verifying that (un)shade keeps window geometry

This adds a new test case which creates an x11 window, shades it,
unshades it and verifies that the geometry is still the same.

M  +11   -0    autotests/wayland/CMakeLists.txt
A  +143  -0    autotests/wayland/shade_test.cpp     [License: GPL (v2)]

http://commits.kde.org/kwin/568a036762fd80fc6c630c462969aee64ec6124d

Comment 4 Martin Flöser 2016-05-11 09:02:08 UTC

The test passes on build.kde.org.

I don't see what to do here and assume fixed by newer version. If you have a chance to try KWin 5.6 and it's not fixed, please reopen.

Comment 5 Peter Mühlenpfordt 2016-05-12 07:43:28 UTC

Tried the KDE 5.6 packages from kubuntu-ppa/staging-plasma - the problem no longer occurs.

Comment 6 Martin Flöser 2016-05-12 07:54:39 UTC

thanks for testing and reporting back!