[Libreoffice-bugs] [Bug 129040] New: [UX] In Donut charts we can not assign the same color to all the pieces

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=129040

            Bug ID: 129040
           Summary: [UX] In Donut charts we can not assign the same color
                    to all the pieces
           Product: LibreOffice
           Version: 6.4.0.0.beta1+
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: medium
         Component: Chart
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: franklin at goodhorse.idv.tw

Created attachment 156127
  --> https://bugs.documentfoundation.org/attachment.cgi?id=156127&action=edit
Sample file

This is actually an "advanced" and "eyecandy" usage of Donut charts.

Please see the attached file.  The data is in the top-left corner.  In A11~A30
we have 20 "1"s to form a Donut charts, which is actually used as scales in a
Donut chart.  It will be in the background, and the *real* Donut chart will
cover on it to form a chart with scales.

However, in such a 20-piece Donut chart we can not assign the same color to all
the pieces if we choose "Color" in "Data series" -> "Area".  It will
*automatically* convert into different colors for each piece.  Although in
normal case there is no reason to assign the same color to each data item, but
creativity is everywhere.

If we assign "Gradient" in Data series -> Area (which is used by the sample
file now), it will be okay to assign the same gradient (the same From color and
To color) to each piece.  But if we try to assign the same color to both From
and To, it will *automatically* become grayscale (why?!).

Expected behavior:  users can be able to assign the same color to all the
pieces in Donut (or other) charts.

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