[Kst] [Bug 93638] Curves derived from psds, histograms, and equations are not updated when source is changed

[Andrew Walker]

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http://bugs.kde.org/show_bug.cgi?id=93638        




------- Additional Comments From arwalker sumusltd com  2004-11-23 00:22 -------
I'm not clear on how there could be multiple curves.
When you create a histogram it creates a histogram
and a curve. The histogram could contain a reference to
the curve. How could it have multiple curves?
I think we need a fix for this for 1.0. Given your fix
won't be ready by then what would you suggest?

> ------- Additional Comments From staikos kde org  2004-11-22 22:32 -------
> On Monday 22 November 2004 16:28, Andrew Walker wrote:
> > One possible solution would be to have the histogram, equation, or psd hold
> > a reference to the curve. The curve could then be updated when necessary.
>
> Won't work... there could be multiple curves, plus it gets really messy for 
> reference counting and garbage collection.  I have a "fix" which reworks 
> updating altogether but it's not ready for 1.0.  For one, we need providers 
> to be set properly.