Re: Nested Tree View

[Micah Carrick <email micahcarrick com>]

Typically, you would use two cell renderers for this task. For example, 
in a file browser, you might not have 1 column for the icon and another 
for the filename, but instead you could pack the icon renderer AND 
filename renderer into the column for a single column so that the 
alignment works.

       col = gtk_tree_view_column_new();
       gtk_tree_view_column_set_title(col, "Filename");
  
       renderer = gtk_cell_renderer_pixbuf_new();
       gtk_tree_view_column_pack_start(col, renderer, FALSE);
       gtk_tree_view_column_set_attributes(col,
                       renderer,
                       "pixbuf",
                       FILE_ICON,
                       NULL);

       renderer = gtk_cell_renderer_text_new();
       gtk_tree_view_column_pack_start(col, renderer, TRUE);
       gtk_tree_view_column_set_attributes(col,
                       renderer,
                       "text",
                       FILE_NAME,
                       NULL);
                      
       gtk_tree_view_append_column( GTK_TREE_VIEW 
(panel->priv->tree_view), col);

- Micah Carrick

 Developer - http://www.micahcarrick.com
 GTK+ Forums - http://www.gtkforums.com



Alejandro Serrano wrote:
> Hi,
> I'm trying to write a custom widget to represent some data in a way
> similar to this image: http://www.threatofchaos.com/imagenes/hsl2.PNG
> What I need is to "nest" items in a TreeView, but changing the set of
> columns that are represented. I mean, I need to have
>
> - Item 1
> - Item 2
>    * SubItem 2.1
>    * SubItem 2.2
> - Item 3
>    * SubItem 3.1
>
> All Item 1, 2 and 3 would have the same set of columns. SubItems 2.1 and
> 2.2 would have another set of columns, and SubItem 3.1 another different
> one.
>
> I have been trying to use a combination of Expanders and TreeViews, but
> I feel that it's very inefficient, and I haven't found the way to have
> all the columns in the same set correctly aligned yet.
> Other option I was considering was creating some kind of new Cell
> Renderer that would include the SubItems. Is there any way to make a
> renderer that spans multiple columns and with a widget inside it?
>
> Thanks very much in advance,
> Alejandro Serrano
>
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