[pygtk] Formatting floats in treeview

[Markus W. Barth]

Is that code snippet of any help?

def set_foreign_key(self, colnum, SQLObject, colname_1, colname_n):
        """maps a foreign key to a corresponding attribute in the n-table. 
colnum is the position of
        the column in the treeview (integer), SQLObject is the SQLObject class 
the mapped value is
        retrieved from, colname_1 is the column name of the foreign key field, 
colname_n is the column
        the value is retrieved from."""
        column = self.get_column(colnum)
        cells   = column.get_cell_renderers()
        cell = cells[0]
        column.set_cell_data_func(cell, self.__use_foreign_key_val, 
[SQLObject,colname_1,colname_n])

the only problem with this approach is that one col can have various 
CellRenderers; this code asserts that only one renderer is assigned to the 
cell.

On Wednesday 18 June 2008 09:02:52 Jeremy S wrote:
> If you put a float in a treeview, you get a really long decimal, which
> is almost always not desired.  So, after playing around with it for a
> while, I came up with this code to truncate floats at 1 decimal place:
>             column.set_cell_data_func(renderer,
>                 lambda column, cell, model, iter:
> cell.set_property('text', '%.1f' % model.get_value(iter,
> column.get_sort_column_id())))
>
> The problem with this is that it uses
> GtkTreeViewColumn::get_sort_column_id() to get the column number,
> which only works if the column is sortable.  Can anyone tell me what
> to do if I want the formatting to work on any column, not just
> sortable columns?  Thank you.
> _______________________________________________
> pygtk mailing list   pygtk at daa.com.au
> http://www.daa.com.au/mailman/listinfo/pygtk
> Read the PyGTK FAQ: http://www.async.com.br/faq/pygtk/