Bug 447651

Summary:	Jagged lines (while reviewing pdf) in Freehand drawing from wacom intuos stylus
Product:	[Applications] okular	Reporter:	yashvpant
Component:	general	Assignee:	Okular developers <okular-devel>
Status:	RESOLVED DUPLICATE
Severity:	normal
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	unspecified
OS:	Linux
See Also:	https://bugs.kde.org/show_bug.cgi?id=437401
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	Example of jagged lines while using the stylus Example of jagged lines at 800% zoom

Description yashvpant 2021-12-29 17:15:53 UTC

SUMMARY
Drawing (review->freehand) from the pen results in jagged lines (weird branches created from the main drawing). Okular v 22.03.70 (installed via apt), OS Ubuntu 20.04, Linux (x86_64) release 5.11.0-43-generic. Wacom intuous tablet and stylus.
The issue does not occur when using only the mouse, or when annotating (with the stylus) in presentation mode.

***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols.
See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***


STEPS TO REPRODUCE (assuming the same setup as above)
0. Open a pdf in Okular.
1. Goto Tools->Review
2. Click or double-click on Freehand drawing
3. Write/draw anything on the document

OBSERVED RESULT
Jagged lines with branches growing from the intended drawing when reviewing pdf

EXPECTED RESULT
Smooth lines

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Ubuntu 20.04 Linux (x86_64) release 5.11.0-43-generic
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8


ADDITIONAL INFORMATION

Comment 1 Laura David Hurka 2021-12-30 13:10:58 UTC

We have seen different types of jagging. Can you make a screenshot of a jagged line at a high zoom value?

Comment 2 yashvpant 2021-12-30 14:47:24 UTC

Created attachment 144965 [details]
Example of jagged lines while using the stylus

Comment 3 yashvpant 2021-12-30 14:49:02 UTC

Created attachment 144966 [details]
Example of jagged lines at 800% zoom

Comment 4 yashvpant 2021-12-30 14:50:40 UTC

(In reply to David Hurka from comment #1)
> We have seen different types of jagging. Can you make a screenshot of a
> jagged line at a high zoom value?

Added attachments that show one such example at different zoom values. Thanks.

Comment 5 Bug Janitor Service 2022-01-14 04:36:50 UTC

Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!

Comment 6 Laura David Hurka 2022-01-14 21:37:40 UTC

I think this is the same problem as in 437401.

*** This bug has been marked as a duplicate of bug 437401 ***