[Bug 230003] New: Zoombar slider adjustments below 100% are hard to archieve

["Jens Müller"]

https://bugs.kde.org/show_bug.cgi?id=230003

           Summary: Zoombar slider adjustments below 100% are hard to
                    archieve
           Product: digikam
           Version: unspecified
          Platform: unspecified
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: [hidden email]
        ReportedBy: [hidden email]


Version:           1.2.0 (rev.: 1100832) (using 4.4.1 (KDE 4.4.1), Kubuntu
packages)
Compiler:          cc
OS:                Linux (i686) release 2.6.31-20-generic

Current zoom slider uses a (pseudo?)linear function to map zoom value to slider
position which makes is it nearly impossible to adjust the slider to zoom
factors below 100%.
Using a logarithmic function will set the 100% position to the middle of the
slider when having the same zoom in/out factor.
Because I do not want to change this without having OK I mark this only here.
Below is a patch to archieve the logarithmic slider adjustment.

Jens

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["Jens Müller"]

https://bugs.kde.org/show_bug.cgi?id=230003





--- Comment #1 from Jens Mueller <tschenser gmx de>  2010-03-08 22:15:39 ---
Created an attachment (id=41454)
 --> (http://bugs.kde.org/attachment.cgi?id=41454)
proposed patch

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["Jens Müller"]

https://bugs.kde.org/show_bug.cgi?id=230003


Jens Mueller <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Zoombar slider adjustments  |Zoombar slider adjustments
                   |below 100% are hard to      |below 100% are hard to
                   |archieve                    |archieve [patch]




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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=230003


Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[hidden email]
          Component|general                     |Preview
            Version|unspecified                 |1.2.0




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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=230003





--- Comment #2 from Gilles Caulier <caulier gilles gmail com>  2010-03-09 11:16:17 ---
Jens,

The patch sound fine for me. Anyway press ":1" loup button on the left of zoom
slider to switch automatically to 100% value.

Gilles Caulier

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["Jens Müller"]

https://bugs.kde.org/show_bug.cgi?id=230003


Jens Mueller <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED




--- Comment #3 from Jens Mueller <tschenser gmx de>  2010-03-09 17:25:25 ---
SVN commit 1101210 by jmueller:

do logarithmic zoom value to zoom slider pos adjustment

BUGS: 230003

 M  +2 -1      NEWS  
 M  +9 -8      libs/widgets/common/dzoombar.cpp  
 M  +2 -7      utilities/imageeditor/editor/editorstackview.cpp  


WebSVN link: http://websvn.kde.org/?view=rev&revision=1101210

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=230003

Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Version Fixed In|                            |1.2.0

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