Bug 443202

Summary:	Action on screen corner creates violation of Fitt's Law
Product:	[Plasma] kwin	Reporter:	boski_cinek
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	nate
Priority:	NOR
Version First Reported In:	5.22.90
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description boski_cinek 2021-10-01 16:02:01 UTC

SUMMARY
Enabling action on screen corner (using Screen Edge module in Configure Window Manager) hijacks corner pixel and thus violates Fitt's law of corners. I have kickoff widget/button in top-left corner and Present Windows action configured for same corner. It worked as expected in 5.22 but it doesn't anymore in 5.23 beta.

STEPS TO REPRODUCE
1. set panel/widget in top-left corner
2. move cursor to top-left corner and click -> widget is activated as expected
3. configure some Screen Edge action for this corner
4. move cursor to top-left corner and click -> nothing happens

SOFTWARE/OS VERSIONS
Operating System: Kubuntu 21.04
KDE Plasma Version: 5.22.90
KDE Frameworks Version: 5.86.0
Qt Version: 5.15.2
Kernel Version: 5.11.0-37-generic (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i5-6200U CPU @ 2.30GHz
Memory: 7,6 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 520

Comment 1 Nate Graham 2021-10-04 22:15:37 UTC

Unfortunately this is not possible to resolve on X11 for technical reasons. It already works as you expect in the Plasma Wayland session, thankfully.

Marking as a duplicate of Bug 387775 because it's the same root cause (and the same unfixable thing on X11 which already works on Wayland)

*** This bug has been marked as a duplicate of bug 387775 ***