https://bugs.kde.org/show_bug.cgi?id=466658

--- Comment #11 from Stéphane Tréboux <stephane.treb...@gmail.com> ---
Hello Méven,

Thanks for the fix.

Looking at
https://invent.kde.org/network/kio-extras/-/commit/7218e3648c78dbde2b6381e0e6c72d0a30a25f64
the new behavior is:
- if both width and height of the exif thumbnail are smaller than the requested
width and height: generate a thumbnail from the full size original picture
- if either width or height of the exif thumbnail are larger than or same as
the requested width or height: use the exif thumbnail and skip thumbnail
generation

Looking at the exif thumbnails generated by my Canon camera, the size is 120x80
pixels. 

The zoom slider in Dolphin lets me chose the thumbnail size from the following
values: 16 pixels, 22 pixels, 32 pixels, 48 pixels, 64 pixels, 80 pixels, 96
pixels, 112 pixels, 128 pixels, 144 pixels, 160 pixels, 176 pixels, 192 pixels,
208 pixels, 224 pixels, 240 pixels and 256 pixels.

The folder  ~/.cache/thumbnails/ contains four folders:
- normal: 128x96, sometimes 120x80 pixels
- large: 256x192 pixels, sometimes 160x120 pixels
- x-large and xx-large are empty, I assume the thumbnails would be even larger

Hence in my case to avoid using the exif thumbnails generated by my Canon
camera, I would have to set the zoom slider in Dolphin to at least 128 pixels
(just my guess). I like big icons and I use 256 pixels anyway so not an issue
for me :-)

Thanks again for the fix!

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