[okular] [Bug 424224] New: Accidental zoom to 1600% is untolerably slow

[raoknz at gmail.com]

https://bugs.kde.org/show_bug.cgi?id=424224

            Bug ID: 424224
           Summary: Accidental zoom to 1600% is untolerably slow
           Product: okular
           Version: 1.3.3
          Platform: Ubuntu Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: okular-devel at kde.org
          Reporter: raoknz at gmail.com
  Target Milestone: ---

SUMMARY
Okular 1.3.3 viewing PDF files under Ubuntu 18.04


STEPS TO REPRODUCE
1. Do something with keyboard or mouse BY ACCIDENT.  I have no idea what it is;
I am certainly not trying to Zoom and sometimes am trying to switch to another
program.  This may perhaps involve the mouse wheel, but I am not sure.  Do this
while viewing a book of say 100 pages or more.

2. Okular interprets this as a request to zoom to 1600%.  There is no way to
configure the Zoom drop box to restrict the zoom range.

3. 

OBSERVED RESULT
Suddenly, out of the blue, the Zoom box displays 1600% and the computer locks
up for several minutes.  You cannot interrupt the process.  I have a 2-core
laptop and a 4-core laptop and on both of them the whole machine seizes up:
music and videos stop playing or stutter to a stop, nothing else responds, the
mouse may not track.  

EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Liux Ubuntu `8.04
(available in About System)
KDE Plasma Version: ?
KDE Frameworks Version: 5.44.0
Qt Version: 5.9.5

ADDITIONAL INFORMATION

-- 
You are receiving this mail because:
You are the assignee for the bug.