[Gimp-developer] What's next for the meta-data browser

[Roman Joost]

On Thu, Jul 02, 2009 at 09:58:33PM +0200, Sven Neumann wrote:
> > Two questions:
> > 
> >     1. Do I have to be careful when entry callbacks write to the
> >     XMPModel (or any other model or structure) everytime a user types in
> >     a character (performance wise)?
> 
> Usually this is not a problem. But if it turns out to be one (because
> changing the model is expensive), then you might want to delay changes
> to the model. You can do that for example by not connecting to 'changed'
> but instead apply the changes when the dialog is closed. Or you could
> connect to 'activate' and 'leave-notify-event' and apply the change when
> the user presses Enter and when the focus leaves the entry.
> 
> >     2. I tried to find out how I can add callbacks to editable tree
> >     items. Those callbacks should update the corresponding fields in the
> >     description tab. E.g someone changes in the advanced tab the title
> >     field. This change should then visible in the description tab and
> >     the title has changed.
> >     What am I looking for, when I want to add callbacks to those tree
> >     columns? A pointer to documentation or some keywords I should look
> >     out for would be helpful.
> 
> You want to connect to the 'edited' signal of the GtkCellRendererText
> object that is responsible for rendering the editable cell.
Cheers for that response! Helped a lot!

Greetings,
-- 
Roman Joost
www: http://www.romanofski.de
email: romanofski at gimp.org
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