Re: Making an empty TreeView sub-column not take up any space

[Russell Shaw <rjshaw netspace net au>]

ERDI Gergo wrote:
> [Please CC replies to cactus cactus rulez org]
>
> Hi,
>
> I'd like to create a pixbuf sub-column inside a GtkTreeView column that 
> doesn't take up any space when the pixbuf is empty. Currently I'm 
> setting up the view like this:
>
>     column = gtk_tree_view_column_new ();
>
>     renderer = gtk_cell_renderer_pixbuf_new ();
>     gtk_tree_view_column_pack_start (column, renderer, false);
>     gtk_tree_view_column_add_attribute (column, renderer, "pixbuf", 
> COLUMN_ICON);
>
>     renderer = gtk_cell_renderer_text_new ();
>     gtk_tree_view_column_pack_start (column, renderer, true);
>     gtk_tree_view_column_add_attribute (column, renderer, "text", 
> COLUMN_LABEL);
>
>     gtk_tree_view_append_column (treeview, column);
>
> However, as you can see in this screenshot:
>     http://cactus.rulez.org/files/treeview-align.png
> the same width is allocated for empty pixbufs.
>
> How can I avoid that?

Maybe you could modify the data before it's displayed with
gtk_tree_model_filter_set_modify_func().