Dolphin folder display, one photo only as thunbnail.

[citizen]

Many years back I thought I read that Dolphin had the ability to display a specific image (aka jpg, png) as the only thumbnail in a folder. Regardless of how many other images/files that were in the folder, you could name it something like (folder?). I may be wrong in my information since at the time I thought. "I'll never use that feature", but here we are 10 years later and I cannot remember if this was Dolphin or not.

Does anyone have any info on this? Perhaps I am remembering wrong? Maybe it was another FM? Maybe it was a proposed feature that never made it to market?
Any help would be appreciated.

[Rog131]

Thumbnails

The KDE applications can show a thumbnail for a file if there is a thumb creator plugin installed for the file type - more: https://www.kubuntuforums.net/showth...view-thumbnail

For the folder there is the 'folders' preview plugin:



It will show four images as default if there are more than four files to thumbnail in the folder:



More of the folder thumbnailer: https://www.kubuntuforums.net/showth...l=1#post391741

KDE Store has: ZCover - https://store.kde.org/p/1080928/

Do it yourself

The Dolphin has an option to set the folder icon - Dolphin > Right click folder > Properties



or you could write a service menu to set the folder icons:

[citizen]

Just to be clear, I do actually have the default 4 images, I just wanted to be able to specify one specific image. You gave a lot of really good info. I may have to re-think what I want to do.
I searched the KDE Store for the Polaroid Icons, is it there? I am interested in these, they may be an option. Can you point me to a download and any info?

[Rog131]

The 'Polaroid Icons' is a home breved service menu, not released. It is using Perl script and the ImageMagick® : https://www.imagemagick.org/script/index.php -> at this PerlMagick: https://www.imagemagick.org/script/perl-magick.php

The Perl script is:

- Reading directory contents (files).
- Reading thumbnails of the random files from the thumbnail cache (*1).
- Making polaroid image pile with the Image/PerlMagick
- Writing the icon entry to the KDE .directory files

(*1) If there is no thumbnail available then make the thumbnails by launching the Dolphin with the preview option on.

A bit simpler example with the KDE kioclient and the kwriteconfig: Use This As Icon - https://www.kubuntuforums.net/showth...l=1#post408723

[citizen]

Thanks for the info. Those are really cool.

[Rog131]

folder.jpg pics display in dolphin as with the Microsoft Windows

Example in the KDE Forums - https://forum.kde.org/viewtopic.php?f=224&p=408202

The KDE thumbnailers are plugins. You could install another and enable the wanted one from the settings.



The folder image is read from the directory folder.jpg image:



...and shown as folder preview:



or with the folder icons:

[Rog131]

A preview clip:

Direct: https://youtu.be/17uGo_cCZ2A