[digikam] [Bug 361047] Wishlist: make grouped images more prominently visible [patch]

[Simon Frei]

The problem with putting expanded groups in their separate part is space
usage. When you expand most/all groups, you will have lots of space lost
(e.g. two images per line). This is very intrusive, in my opinion
grouping should be as seamless as possible (that's why I like the table
treeview best for that).

Another idea: Make the background colour seamless or use a frame around
all the images in an expanded group. This makes it clear which images
actually belong together, instead of just indicating that the image
belongs to a group by a uniform background. However I tried to find any
hints in the interweb about how to add design elements spanning multiple
indexes in a QListView and I couldn't come up with anything.

The 50% opacity sounds cool, but I think it has the same problem: If two
expanded groups are adjacent, it is not clear which items belong to
which group, only that all of them are in a group.