Re: How to add a custom cell renderer to a Gtk::IconView

[Todor Todorov <ttodorov gmx net>]

Thank you so much for your time and help! It worked as you suggested.

On 11/22/2009 11:38 PM, Jos Alburquerque wrote:
> On Sun, 2009-11-22 at 20:57 -0500, Todor Todorov wrote:
>    
> > Thanks again for the reply.
> >
> > It is not a problem to implement the renderer in gtkmm - as a matter of
> > fact that's the first thing I did. As you know though, I can't add it to
> > a Gtk::IconView, because it does not implement the CellLayout interface.
> > That bit of info was in your first reply.
> >      
> Yes, I did mention the problem with Gtk::IconView not yet implementing
> the Gtk::CellLayout interface.  I could be wrong, but what I was sort of
> suggesting is that if you have the gtkmm cell renderer, you use it's
> gobj() where necessary in your posted code.  For example, your code
> would look like the following (the lines that have been modified are
> distinguished with an asterisk as the first character):
>
>       ...
>       Gtk::IconView *browser = 0;
>       builder->get_widget( "browser", browser );
>       {
>           GtkIconView *view = browser->gobj();
> *        Gtk::CellRenderer *cell = Gtk::CellRendererThumb::create();
> *        gtk_cell_layout_pack_start( GTK_CELL_LAYOUT( view ),
> cell->gobj(), FALSE );
>
> *        // Set cell renderer properties here using gtkmm
>
> *        gtk_cell_layout_set_attributes( GTK_CELL_LAYOUT( view ),
> cell->gobj(),
>                                           "thumb-name", 0, "thumb-date",
> 1,
>                                           "thumb-image", 2,
>                                           "thumb-checked", 3,
>                                           "thumb-duplicate", 4, NULL );
>
> *        // Connect to cell signals here using sigc
>       }
>       browser->set_model( thumblist );
>       ...
>
> Now, of course, I'm by far not an expert so I'm just guessing.
>
>    
> > I guess I will have to look into subclassing Gtk::IconView itself ... Do
> > you know of any examples for that? I suspect deriving from Gtk::ListView
> > will be easier, and I'll find more code I could look up and take a note
> > from, but I have no idea how to make the new class order the items in
> > multiple columns.
> >      
> I don't have examples but others may.  The online book has good
> information on custom widgets in chapter 25[1].  Also the
> gtkmm-documentation package[2] has examples.
>
> [1]
> http://library.gnome.org/devel/gtkmm-tutorial/unstable/chapter-customwidgets.html.en
> [2]http://ftp.gnome.org/pub/GNOME/sources/gtkmm-documentation/
>
>