Bug 443862 - Position trace mishandles diagonal movements
Summary: Position trace mishandles diagonal movements
Status: RESOLVED WORKSFORME
Alias: None
Product: systemsettings
Classification: Applications
Component: kcm_joystick (other bugs)
Version First Reported In: 5.23.0
Platform: Neon Linux
: NOR normal
Target Milestone: ---
Assignee: Plasma Bugs List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2021-10-16 23:55 UTC by Nagy Tibor
Modified: 2025-11-08 03:48 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:

Attachments
Video of the bug (143.16 KB, video/mp4)
2021-10-16 23:55 UTC, Nagy Tibor 		Details
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Description Nagy Tibor 2021-10-16 23:55:56 UTC 
Created attachment 142517 [details]
Video of the bug

SUMMARY
The position trace at the Joystick KCM doesn't know the concept of diagonal movements. When two joystick axis events arrive at the same time (js_event->time) those events should be joined into a single [X,Y] coordinate and not incorrectly handled as two separate axis-aligned events as the KCM currently does.

This bug manifests itself as an ugly staircase-like pattern on the tracing widget.

SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.23
KDE Plasma Version: 5.23.0
KDE Frameworks Version: 5.87.0
Qt Version: 5.15.3
Comment 1 Nate Graham 2025-10-09 16:19:49 UTC 
Thank you for the bug report, and I'm sorry we weren't able to look into it yet. A lot has changed since it was reported; can I ask you to see if this is still an issue with Plasma 6.4 or later? Thanks a lot!
Comment 2 Bug Janitor Service 2025-10-24 03:47:17 UTC 
🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!
Comment 3 Bug Janitor Service 2025-11-08 03:48:02 UTC 
🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME.