Bug 477570

Summary:	When using a stylus the cursor is shown as a cross when hovering over native-Wayland Qt software
Product:	[Plasma] kwin	Reporter:	Raghavendra kamath <raghu>
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED UPSTREAM
Severity:	minor	CC:	fanzhuyifan, kde, letsgetaparty, miranda, nate, nicolas.fella
Priority:	NOR
Version:	git master
Target Milestone:	---
Platform:	Neon
OS:	Linux
URL:	https://bugreports.qt.io/browse/QTBUG-105843
Latest Commit:		Version Fixed In:	Qt 6.8.0
Sentry Crash Report:

Description Raghavendra kamath 2023-11-26 16:32:48 UTC

SUMMARY
I tried wayland and kde plasma with neon-unstable-20231119-1118 iso and when I tried to use the desktop my cursor when using a graphic tablet was a cross shape. It changed to adwaita arrow inside firefox and then normal plasma breeze arrow inside xwayland application.

This results in fairly inconsistency cursor ideally all the cursor should be of one family. If the goal is to differentiate various devices then all app should use the same cursor while using that device and there should be more p[leasant cursor instead of a cross cursor for other device perhaps a cursor with slight variation in value like gray etc.


STEPS TO REPRODUCE
1. Download neon-unstable-20231119-1118 iso 
2. Login to plasma desktop 
3. use any graphic tablet and observe the cursor 

OBSERVED RESULT
Cursor should be normal plasma cursor

EXPECTED RESULT
Cursor is now a cross cursor.

Comment 1 Nate Graham 2023-11-29 21:58:24 UTC

Can reproduce the cursor being a cross in native Wayland Qt apps.

Comment 2 Raghavendra kamath 2023-11-30 05:39:57 UTC

In addition to the odd cursor the cursor also doesn't change to show grab handles and other things. So it becomes hard to grab a window and resize it while using a tablet.

Comment 3 Nicolas Fella 2023-12-16 21:14:51 UTC

Technically speaking it's up to the application to provide a (tablet) cursor image. That means some amount of inconsistencies are likely unavoidable.

Qt doesn't seem to specify a tablet cursor at all, so KWin uses the fallback crosshair cursor. Changing that to another xcursor shape would be trivial.

Personally speaking I kind of like the crosshair cursor though

Comment 4 Raghavendra kamath 2023-12-17 06:39:46 UTC

The cursor doesn't change when hovering over the edge of the window so resize and other operations become troublesome. Also I think applications do provide cursors like firefox provides adwaita cursors. krita will provide the tool cursor I think But on the desktop the crosshair cursor as a default is not so much useful in my opinion. If the user needs they should be able to choose it I think.

Comment 5 Nicolas Fella 2024-01-20 15:17:32 UTC

See also https://bugreports.qt.io/browse/QTBUG-105843

Comment 6 Nate Graham 2024-09-19 18:49:56 UTC

*** Bug 493352 has been marked as a duplicate of this bug. ***