[Digikam-devel] [Bug 291877] New: Change tag filters checkboxes to three-states checkboxes to allow filtering by inclusion and by exclusion

[Olivier Kes]

https://bugs.kde.org/show_bug.cgi?id=291877

           Summary: Change tag filters checkboxes to three-states
                    checkboxes to allow filtering by inclusion and by
                    exclusion
           Product: digikam
           Version: 2.5.0
          Platform: Archlinux Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Filters
        AssignedTo: digikam-devel at kde.org
        ReportedBy: olivier.keshavjee at gmail.com


Version:           2.5.0 (using KDE 4.7.4) 
OS:                Linux

I think we should change the checkboxes to three-states checkboxes (unchecked,
selected, excluded), to allow finer filtering. We could filter all pictures
having TAG0, not having TAG1, and indifferent to TAG2.

For example, if I want to see all my landscapes except those with sunset, I
could filter by "+landscapes -sunset".

I was confronted today to the situation when I had to make a selection of
pictures in my whole collecting by date. All pictures that were resized were
shown twice, and I couldn't exclude only those.

Reproducible: Always

Steps to Reproduce:
.


Expected Results:  
Check boxes in tags filter should allow [ ], [x], [v].

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