Re: GTK+3 GtkCellRendererPixbuf: pixbuf vs. icon-name

[Colomban Wendling <lists ban herbesfolles org>]

Hi,

Le 14/02/2015 01:18, Roland Koebler a écrit :
> I would like to render either an icon or a pixbuf at the same place in
> a TreeView. So, I tried to use a CellRendererPixbuf and either set the
> pixbuf- or icon-name-property:
>
> - Use a liststore with two columns, one for the pixbuf, one for the
>   icon-name.
> - Set only one of pixbuf or icon-name, and the other to None.
>
> But in my tests, the pixbuf is always ignored, and either the icon-name-
> image is shown or nothing.
> […]
>
> Am I doing anything wrong?
> Or is the documentation wrong?
> Or do I have to only use pixmaps, and therefore create a pixmap from
> every icon-name I want to use?

I don't know if there is a simpler way to do what you want but I would
imagine that every time one of the properties is set it takes precedence.

Anyway, you could use gtk_tree_view_column_set_cell_data_func() to
manually set the appropriate property.  I'm not very used to do this in
Python, so it might not be the cleanest possible (like I don't know if
set_property() is the wait to go), but it works:

...
col = Gtk.TreeViewColumn("Image", renderer)

def cell_data(col, cell, model, iter, data=None):
    name, pix = model.get(iter, 0, 1)
    if pix is not None:
        cell.set_property('pixbuf', pix)
    else:
        cell.set_property('icon-name', name)

col.set_cell_data_func(renderer, cell_data)
...

Regards,
Colomban