Bug 447118 - Crazy scrolling behavior in Okular
Summary: Crazy scrolling behavior in Okular
Status: CLOSED INTENTIONAL
Alias: None
Product: okular
Classification: Applications
Component: general (show other bugs)
Version: 21.08.3
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: Okular developers
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2021-12-17 10:06 UTC by medin
Modified: 2022-01-12 08:56 UTC (History)
1 user (show)

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


Attachments
Crazy scrolling behavior in Okular (3.26 MB, video/mp4)
2021-12-17 10:06 UTC, medin
Details

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Description medin 2021-12-17 10:06:07 UTC
Created attachment 144619 [details]
Crazy scrolling behavior in Okular

Using the hand selection tool, when I grab any page and throw it up or down Okular continues to scroll fast like crazy and stops on really random far page , I have already smooth scrolling disabled. See attached video for more info.
Comment 1 Laura David Hurka 2021-12-18 16:01:34 UTC
This is called kinetic scrolling. It can not be disabled.

If you “throw it up or down”, what else would you expect? Is this a problem?
Comment 2 medin 2021-12-18 18:35:45 UTC
(In reply to David Hurka from comment #1)
> This is called kinetic scrolling. It can not be disabled.
> 
> If you “throw it up or down”, what else would you expect? Is this a problem?

This behavior has no usage at all, because it stops at random page which is far, what is the normal/expected behavior is like it's done on most pdf readers (like Adobe reader) on mobile touch screen where it scrolls up/down and jumps 1 or 2 pages then slowly stops.
Comment 3 Nate Graham 2022-01-11 21:45:16 UTC
That's the whole point of the feature. It lets you scroll really fast if you want. If you don't want, don't throw your cursor around really quickly.
Comment 4 medin 2022-01-12 08:56:07 UTC
(In reply to Nate Graham from comment #3)
> That's the whole point of the feature. It lets you scroll really fast if you
> want. If you don't want, don't throw your cursor around really quickly.

I'm daily using Okular to read long PDFs and in fact this "feature" is really bad for user experience, it causes many accidental fast scroll when you use the had selection tool with mouse, I don't know may be I was used to other PDF readers to attenuate speed and stopping scroll even if you throw page up or down very fast.