[Bug 150674] New: turn of live update of preview when moving points in curves dialog or in histogram

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           Summary: turn of live update of preview when moving points in
                    curves dialog or in histogram
           Product: digikamimageplugins
           Version: unspecified
          Platform: Compiled Sources
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: digikam-devel kde org
        ReportedBy: mikmach wp pl


Version:            (using KDE Devel)
Installed from:    Compiled sources
OS:                Linux

It applies to all plugins with histogram or curves manipulation.

When moving points of histogram/curves digiKam tries to make live update of preview. It takes much of resources and computer neither really succeeds in updates of preview nor reacts smoothly for mouse movements preventing precise settings.

Maybe my machine isn't up to date (Sempron 2200, 756M RAM) but I believe it may affect also many newer computers.

I am leaving this as a bug, not wish, because IMO it makes comfortable usage of program very hard. GIMP - dedicated graphics operation program - doesn't make live update, Pixel also doesn't do this.
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mikmach wp pl changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |UNCONFIRMED



------- Additional Comments From mikmach wp pl  2007-11-01 19:19 -------
New Gimp 2.4 now has digiKam behavior. Don't like it but should be noted :)
Downgrading to Unconfirmed.
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[Gilles Caulier-4]

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------- Additional Comments From caulier.gilles gmail com  2008-03-20 15:00 -------
Mik,

there is a timer of 500ms which is used to delay render when you change settings (from slider for ex.). This prevent multiple render at the same time when you change a value. This is not enough ?

Gilles
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[Arnd Baecker]

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------- Additional Comments From arnd.baecker web de  2008-03-20 17:27 -------
Of course, timer values are somehow system dependent, so this can be problematic.
Question: is the curves operation for the preview done on a small bitmap?
(If yes, it should be reasonably fast ... ;-).
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http://bugs.kde.org/show_bug.cgi?id=150674         
mikmach wp pl changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |WORKSFORME



------- Additional Comments From mikmach wp pl  2008-03-20 17:58 -------
Hmm. Don't know what changed recently but it feels much faster and using of curves is quite comfortable.

Closing as WORKSFORME
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