[okular] [Bug 432121] fast scrolling on page number glitches/does not scroll at all

[David Hurka]

https://bugs.kde.org/show_bug.cgi?id=432121

--- Comment #3 from David Hurka <david.hurka at mailbox.org> ---
You can check that by unchecking “use smooth scrolling” in the config dialog.
It’s now the first checkbox in that dialog.

The problem is probably that PageView reports “viewport changed” at every
scroll step (60Hz), and then the DocumentObserver mechanism reports the new
viewport to the page number widget. (Similar to how the viewport is reported to
the thumbnails bar.) I. e. exactly this:

> It looks very much like the page number is rapidly reset to the
> currently visible page from the slowly scrolling document.

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