[dolphin] [Bug 441836] New: Wishlist: make thumbnails for tiny pixelart sharp

[Alex]

https://bugs.kde.org/show_bug.cgi?id=441836

            Bug ID: 441836
           Summary: Wishlist: make thumbnails for tiny pixelart sharp
           Product: dolphin
           Version: 21.08.0
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: wishlist
          Priority: NOR
         Component: view-engine: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: vorxborx at gmail.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

Created attachment 141203
  --> https://bugs.kde.org/attachment.cgi?id=141203&action=edit
Side by side with a mockup

When viewing small icons (e.g. 16x16 pixels) dolphin currently enlarges the
icons (much appreciated), and does so with a smooth scaling algorithm (like
cubic interpolation in gimp). This ordinarily works very well for all manner of
images, however, for particularly small images, it results in a very blurry
preview (see attachment).
What I would like to have, is a an option for images smaller than a certain
size to receive no interpolation while scaling, using a very primitive scaling
algorithm like "nearest neighbor". This would retain the crisp pixels without
simply shrinking the whole image (see attachment for my mockup made in gimp).



SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 21.08.0
KDE Frameworks Version: 5.85.0
Qt Version: 5.15.2

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