[Digikam-devel] [Bug 186672] New: Zoom slider should change amount of pictures, not picture size directly

[Dotan Cohen]

https://bugs.kde.org/show_bug.cgi?id=186672

           Summary: Zoom slider should change amount of pictures, not
                    picture size directly
           Product: digikam
           Version: unspecified
          Platform: Ubuntu Packages
        OS/Version: unspecified
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: digikam-devel at kde.org
        ReportedBy: kde-2 at dotancohen.com


Version:            (using KDE 4.2.0)
Installed from:    Ubuntu Packages

In the Thumbnails view of Digikam one can move the zoom slider to change the
size of the thumbnails, and by changing the size of the thumbnails one can fit
more or less thumbnails on a row. However, this lets the user choose thumbnail
sizes that are smaller than the largest possible size for a given number of
thumbnails per row. Thus, the slider should change the amount of thumbnails per
row (and according to that have the size of the thumbnails generated) as
opposed to changing the size of the thumbnails (and according to that have the
amount of thumbnails per row).

For instance, if the row is 1000 px wide then the slider should only make
thumbnails of 500, 333, 250, 200, 166, 142, 125, 111, and 100 pixels wide.
Thumbnails of width 255 are useless: they show less information than thumbnails
of width 333, but no more of them fit on a row than thumbnails of width 333.

Of course, I am not taking into account the borders and margins, and the real
algorithm for determining legal thumbnail widths should account for this.

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