Re: color selection and tree view

[Todd Fisher <taf2 lehigh edu>]

Hi Ian,

>  model = gtk_tree_view_get_model(GTK_TREE_VIEW(view));
>
>  g_object_ref(model); /* Make sure the model stays with us after the tree view unrefs it */
>
>  gtk_tree_view_set_model(GTK_TREE_VIEW(view), NULL); /* Detach model from view */
>
>  ... insert a couple of thousand rows ...
>
>  gtk_tree_view_set_model(GTK_TREE_VIEW(view), model); /* Re-attach model to view */
>
>  g_object_unref(model);
>  

is this equivelenat to the above?

 g_object_get( G_OBJECT( widget->widget ), "model", &model, NULL );
                                                                                                                                                             

 // Make sure the model stays with us after we remove it from the model 
widget
 g_object_ref( model );
                                                                                                                                                             

 // Detach model from view
 g_object_set( G_OBJECT( widget->widget ), "model", NULL, NULL );  // 
is this correct?

... insert a couple thousand rows ...

 g_object_set( G_OBJECT( widget->widget ), "model", model, NULL );// 
Reattach the model
 g_object_unref( model );



>  ...
>
> tim> Secondly, you should make sure that sorting is disabled while you
> tim> are doing your mass insertions, otherwise your store might be
> tim> resorted after each and every single row insertion, which is going
> tim> to be everything but fast.
>
> This reads like excellent advice, and I already follow the first part.  But,
> as for the second part, how do I temporarily disable sorting on a sorted
> view?  

did you try gtk_tree_sortable_set_sort_func 
<http://developer.gnome.org/doc/API/2.0/gtk/GtkTreeSortable.html#gtk-tree-sortable-set-sort-func>?

> Merely setting the sort column to  GTK_DEFAULT_SORT_COLUMN_ID doesn't
> do it, bacause I have already used gtk_tree_sortable_set_default_sort_func()
> to basically remember the initial order.  Using the same function
> with a NULL parameter leads to a segfault, which tells me that there is an
> internal do-nothing function installed initially.  But I cannot retrieve
> _that_ and use it because there is no gtk_tree_sortable_get_default_sort_func.
>
> Really, I simply want (but cannot find) something like a "sortable" property
> on the view that I can clear before the big operation and set again after.
>
>  
sorry i don't have answers to your other questions.

-todd