Take a deep breath and laugh hard - I never even considered drag 'n' dropping files... lol
But that gave me an idea to achieve exactly what I wanted! I'll simply use my copy-to function in IrfanView.
When I want images for a same project, I send a copy to a temp directory, when I need just one, I send it to GIMP directly and when I'm done browsing, I just Ctrl+A the images of said temp directory and drop them in GIMP, which will open them as layers in single projects (tabs). It's quick, precise and easy.
If someone knows how to do it via command line arguments though, I'm always listening.
Thank you for the feedback!
P.S.: I know it sounds a like a lengthy process, but it's only 2 keyboard taps without leaving full screen viewing.
Press F8, then either
1, 2 or 3. Repeat.
Drag 'n' drop and
Fit canvas to Layers when finished. Voilà!
Attachment:
File comment: Temporary destinations in IrfanView (F8 - Copy file...)
temp_folders.jpg [ 116.3 KiB | Viewed 3981 times ]
Attachment:
fit-to-layers.jpg [ 95.27 KiB | Viewed 3981 times ]
(Which can be assigned a shortcut via GIMP's shortcuts editor)