[okular] [Bug 408273] New: Scaling mode "Print original size" is confusing

[Matthew Trescott]

https://bugs.kde.org/show_bug.cgi?id=408273

            Bug ID: 408273
           Summary: Scaling mode "Print original size" is confusing
           Product: okular
           Version: 1.7.1
          Platform: Archlinux Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: printing
          Assignee: okular-devel at kde.org
          Reporter: matthewtrescott at gmail.com
  Target Milestone: ---

Created attachment 120544
  --> https://bugs.kde.org/attachment.cgi?id=120544&action=edit
Sample PDF for testing

Split from https://bugs.kde.org/show_bug.cgi?id=406237

SUMMARY
When selecting "Print original size" as the scaling setting, the document is
shifted down and left, rather than being cropped.

STEPS TO REPRODUCE
1. Open any PDF (such as the one attached)
2. Open the Print menu, choose a paper size smaller than the one of the
original document, and select "Print original size" as the scaling mode.
3. Click "Print."

OBSERVED RESULT
The document's contents are shifted down and left to fit the printer's margins.

EXPECTED RESULT
The document's contents are overlayed with a blank margin prior to being sent
tot the print driver.

SOFTWARE/OS VERSIONS
KDE Frameworks Version: 5.58.0
Qt Version: 5.12.3

ADDITIONAL INFORMATION
The current system for this kind of printing may even have problems for RTL
languages (I do not know since I have not tested this). I think a simpler, more
elegant solution would be to replace this scaling mode with one called "Crop to
fit printable area." This new scaling mode would add blank margins to the PDF
before sending it to the print driver, rather than allowing the printer to
figure out that it can't print part of the document. I'm not sure how useful
that would be in practice compared to the "Fit to full page" scale mode.

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