[okular] [Bug 472924] New: Pinch to Zoom on a touch screen zooms to the center of the screen and not to the intended part of the page

[Archisman Panigrahi]

https://bugs.kde.org/show_bug.cgi?id=472924

            Bug ID: 472924
           Summary: Pinch to Zoom on a touch screen zooms to the center of
                    the screen and not to the intended part of the page
    Classification: Applications
           Product: okular
           Version: 23.07.80
          Platform: Archlinux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: okular-devel at kde.org
          Reporter: apandada1 at gmail.com
  Target Milestone: ---

SUMMARY

When I pinch to zoom on a touch screen, Okular zooms to the center of the page.
I expect it to zoom to the portion of the page where I initially placed my
finger.

STEPS TO REPRODUCE
1. Open a pdf in Okular running on a touch screen computer
2. Try to zoom in with two fingers

OBSERVED RESULT

Okular zooms into the center of the page (even if I initially placed my fingers
at the edge of the page)

EXPECTED RESULT
Okular should zoom in to the position of the page where fingers were placed
initially.
This is the behavior when I zoom into PDF readers in Android phones/tablets
(and also in Firefox PDF viewer in Linux).

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux
KDE Plasma Version: 5.27.7 
KDE Frameworks Version: 5.108.0
Qt Version: 5.15.10

ADDITIONAL INFORMATION
This is NOT same as bug https://bugs.kde.org/show_bug.cgi?id=421755, which has
been fixed in Okular 23.07.80

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