[dolphin] [Bug 483561] New: Dolphin Cannot Display Thumbnails for PNG Wide Gamut (P3) from Apple/Gooogle Phones

[John]

https://bugs.kde.org/show_bug.cgi?id=483561

            Bug ID: 483561
           Summary: Dolphin Cannot Display Thumbnails for PNG Wide Gamut
                    (P3) from Apple/Gooogle Phones
    Classification: Applications
           Product: dolphin
           Version: 24.02.0
          Platform: Arch Linux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: view-engine: icons mode
          Assignee: dolphin-bugs-null at kde.org
          Reporter: kdelovaa at mozej.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

Created attachment 167173
  --> https://bugs.kde.org/attachment.cgi?id=167173&action=edit
PNG Wide Gamut Photo (P3)

STEPS TO REPRODUCE
1. Get the attatched photo
2. Open Dolphin
3. No Thumbnail at all.

OBSERVED RESULT
No thumbnail for png wide gamut photos (P3). Thumbnail should also display
webkit logo. If there's red (if you fix), but there's still no logo then you
failed to support wide gamut. In thumbnail there should be a webkit logo on red
background. No logo=no support. Here not even red background.

EXPECTED RESULT
Fix the support for google/android and apple phones and their photos (wide
gamut png). Webikit logo on Red should be visible. If there is no logo, then
there's no support. NO LOGO=NO SUPPORT.

SOFTWARE/OS VERSIONS:
KDE Plasma Version: 6.0.1
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
Graphics Platform: X11
Graphics Processor: Intel Only

ADDITIONAL INFORMATION:
$ pacman Qs 'xxxx':
kdesdk-thumbnailers 24.02
kdegraphics-thumbnailers 24.02
ffmpegthumbs 24.02
qt6-imageformats 6.6.2
kimageformats 6.0.0
libpng 1.6.43
libavif 1.0.4
libheif 1.17.6
libwebp 1.3.2
libjxl 0.10.2
webp-pixbuf-loader 0.2.7

P.S. Gwenview displays thumbnails correctly. There is red background and webkit
logo on it. Gwenview cannot display this photo. It displays only red
background, but no logo, hence fail.

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