Bug 426679

Summary:	Pinch to zoom results in scrolling in large documents
Product:	[Applications] okular	Reporter:	jan.claussen10
Component:	PDF backend	Assignee:	Okular developers <okular-devel>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	nate, oliver.sander
Priority:	NOR
Version First Reported In:	1.11.1
Target Milestone:	---
Platform:	Manjaro
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description jan.claussen10 2020-09-18 10:42:06 UTC

SUMMARY
When you pinch to zoom on a convertible laptop, Okular scrolls up very fast. The larger the document, the worse it is.

STEPS TO REPRODUCE
1. Open a large PDF in Okular
2. Use pinch to zoom

OBSERVED RESULT
Okular scrolls up

EXPECTED RESULT
It should only zoom

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Manjaro
KDE Plasma Version: 5.19.5
KDE Frameworks Version: 5.73.0
Qt Version: 5.15.1

ADDITIONAL INFORMATION
This bug was also a problem in Xournal++ and they kind of fixed it by stopping the scrolling process. This results in scrolling up just a bit and eventually in a trembling effect. I can imagine that this bug is though deep inside of qt5 or the KDE framework.

Comment 1 Oliver Sander 2020-09-18 13:44:24 UTC

Will this be fixed by https://invent.kde.org/graphics/okular/-/merge_requests/134 ?

Comment 2 Nate Graham 2020-09-18 21:31:14 UTC


*** This bug has been marked as a duplicate of bug 421755 ***

Comment 3 Nate Graham 2021-01-19 15:55:25 UTC


*** This bug has been marked as a duplicate of bug 159408 ***