Bug 489265

Summary:	"Shake Cursor" duplicates cursor when zoomed in
Product:	[Plasma] kwin	Reporter:	angelo <elpepechingon>
Component:	effects-various	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	CONFIRMED ---
Severity:	minor	CC:	1i5t5.duncan, dawidploch01, nate, xaver.hugl
Priority:	NOR
Version First Reported In:	6.1.1
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description angelo 2024-06-26 22:21:12 UTC

SUMMARY

STEPS TO REPRODUCE
1. zoom in (is easier to see when really zoomed in or when the cursor becomes a caret)
2. shake cursor

OBSERVED RESULT
The cursor PNG created on top of the original one is very noticeable 

EXPECTED RESULT
The cursor effect shouldn't be noticeable when zoomed in

SOFTWARE/OS VERSIONS
KDE Plasma Version: 6.1.0
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.2

Comment 1 duha.bugs 2024-07-28 18:38:48 UTC

*** Bug 490923 has been marked as a duplicate of this bug. ***

Comment 2 Duncan 2024-11-10 03:40:12 UTC

Bug #490923 (duplicate) has an I believe reasonable suggestion that I'll repeat and add to here: Disable shake-cursor when zoomed in. My add: Do this only when the zoom effect's scale-cursor option is enabled as well; without it shake-cursor's perhaps even more useful as the cursor's even smaller compared to everything else -- I know as I had zoom's cursor-scaling option disabled due to a bug for awhile, but that's fixed now.

The argument is that when zoomed in (with the cursor zoomed too) shake-cursor to locate isn't really useful/necessary any longer.

My own use-case: I've 4 4k 50-inch TVs as monitors in a 2x2 grid to effectively give me a poor-man's 100-inch 8k (tho ATM, it's only 3 in an L, gotta upgrade to do the full 4), making it rather easy to lose the pointer/cursor in all that space. One might think zoom wouldn't be necessary with that but I still find it useful. But by definition, zooming in constrains the visible resolution and if configured so, the cursor already scales/zooms as well, so indeed, shake-cursor to locate it /isn't/ as necessary. Therefore, at least for my use-case, disabling shake-cursor when zoomed (with the cursor already zoomed too) is indeed reasonable.

If there are use-cases where people still need shake-cursor when zoomed in with the cursor zoomed/scaled too, please post 'em (well, the first few anyway, don't go overboard if there's a hundred... =:^). I can't think of any so if this will break the way others use the effects I'll learn. =:^)