[okular] [Bug 449492] New: Trim margins: When navigating, document acts as if the margins are still present

[rgreen]

https://bugs.kde.org/show_bug.cgi?id=449492

            Bug ID: 449492
           Summary: Trim margins: When navigating, document acts as if the
                    margins are still present
           Product: okular
           Version: unspecified
          Platform: Mint (Ubuntu based)
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: okular-devel at kde.org
          Reporter: greenandpleasant2000-support at yahoo.co.uk
  Target Milestone: ---

Created attachment 146168
  --> https://bugs.kde.org/attachment.cgi?id=146168&action=edit
PDF showing issue with trimmed margins

SUMMARY
***
Even when "Trim margins" is selected, the document still behaves, for
navigation purposes, as if the margins were still preent. This means that if
the user reduces the width of the program window to just encompass the trimmed
pages s/he will not be able to navigate between pages using the keyboard
Left/Right arrows.

SUGGESTION: When "Trim view" is selected allow the user to reduce the width of
the window further to barely more than the width of the trimmed document AND
still maintain the functionality of the left/right keyboard arrows. 

***

STEPS TO REPRODUCE
1. Open the attached document at 100% view.
2. Reduce the width of the window to the minimum possible without the
horizontal scroll bar appearing.

EXPECTED / OBSERVED result: You can use the keyboard left / right arrows to
navigate between pages.

3. Select View > Trim view > Trim margins.
4. Reduce the width of the window further.

EXPECTED RESULT: You should be able to reduce the width to barely more than
that of the trimmed view without the scroll bars appearing.
OBSERVED RESULT: A scroll bar appears well before you reach the limit of the
trimmed pages. In other words, the document is behaving as if the margins are
still present.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Linux Mint 20.1
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 5.89.0
Qt Version: 5.15.3

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