Bug 255712

Summary:	"Thumbnail Aside" effect visible when screen is locked -- privacy issue
Product:	[Plasma] kwin	Reporter:	Alexander Potashev <aspotashev>
Component:	effects-various	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal	CC:	alassane.maiga, squeakypancakes
Priority:	NOR	Flags:	mgraesslin: ReviewRequest+
Version:	unspecified
Target Milestone:	4.11
Platform:	Gentoo Packages
OS:	Linux
URL:	https://git.reviewboard.kde.org/r/108670/
Latest Commit:	http://commits.kde.org/kde-workspace/bee4a6b15454e99469bfa17900cf5c0bdbc4ad5e	Version Fixed In:	4.11
Sentry Crash Report:

Description Alexander Potashev 2010-10-31 02:58:54 UTC

Version:           unspecified (using KDE 4.5.2) 
OS:                Linux

1. enable "Thumbnail Aside" effect
2. activate the effect for one of the windows
3. lock screen. The thumbnail does not hide.

Similar issue: https://bugs.kde.org/show_bug.cgi?id=179924

Reproducible: Always

Comment 1 Martin Flöser 2010-12-18 12:55:45 UTC

Confirmed and not surprising: the thumbnail is always rendered. The effect needs to know when the screen is locked.

It has nothing to do with #179924

Comment 2 Martin Flöser 2013-02-07 09:23:47 UTC

Git commit bee4a6b15454e99469bfa17900cf5c0bdbc4ad5e by Martin Gräßlin.
Committed on 30/01/2013 at 13:07.
Pushed by graesslin into branch 'master'.

Notify effects when the screen gets locked

EffectsHandlerImpl starts to monitor DBus for the screen being locked and
provides this information to the Effect system by allowing them to ask
whether the screen is currently locked and by emitting a signal when the
screen gets locked/unlocked.

This information is needed to ensure that no private data is shown on the
screen. The following effects are adjusted:
* taskbar thumbnails
* thumbnail aside
* mouse mark
* screen shot
FIXED-IN: 4.11
REVIEW: 108670

M  +2    -0    kwin/CMakeLists.txt
M  +103  -0    kwin/effects.cpp
M  +29   -1    kwin/effects.h
M  +15   -1    kwin/effects/mousemark/mousemark.cpp
M  +1    -0    kwin/effects/mousemark/mousemark.h
M  +1    -1    kwin/effects/screenshot/screenshot.cpp
M  +9    -1    kwin/effects/taskbarthumbnail/taskbarthumbnail.cpp
M  +1    -0    kwin/effects/taskbarthumbnail/taskbarthumbnail.h
M  +2    -1    kwin/effects/thumbnailaside/thumbnailaside.cpp
M  +1    -1    kwin/effects/thumbnailaside/thumbnailaside.h
M  +18   -0    kwin/libkwineffects/kwineffects.h

http://commits.kde.org/kde-workspace/bee4a6b15454e99469bfa17900cf5c0bdbc4ad5e

Comment 3 Thomas Lübking 2013-02-15 15:01:52 UTC

*** Bug 314927 has been marked as a duplicate of this bug. ***

Comment 4 Squeaky Pancakes 2020-08-05 20:36:33 UTC

This looks its like broken again in 5.19.4