Re: hiding progressbar in a Gtk2::TreeViewColumn

[muppet <scott asofyet org>]

On Jul 24, 2009, at 11:34 PM, anguila wrote:

> Trying the first option it seems not recognize sensible option:
> GLib-GObject-WARNING **: unable to set property `visible' of type  
> `gboolean' from value of type `gchararray'
>
> With the second option it works, but still visible:
>
>     $tc_pbar->set_cell_data_func ($pbar,
>        sub {
>            my ($column, $cell, $model, $iter) = @_;
>
>            my $string = $model->get_string_from_iter ($iter);
>            if ($string!~/\d:\d:0/) {
>                # we should show the progress bar
>                $cell->set (visible => FALSE, value => $value);

Is that a typo?  (Should be TRUE here, not FALSE.)

>            } else {
>                # we should NOT show the progress bar, so don't
>                $cell->set (visible => FALSE,value=>22);
>                 print "pbar to off!\n";
>            }
>        });
>
> All the 3rd child want to make pbar visible=>false. I tried and i  
> can change the value of all 3rd childs to 22 and it works, but  
> visible=>false doesn't change the state of visibility and i dont  
> understand why because is a attribute og Gtk2::CellRenderer and it  
> should works, but it doesn't.
>
> Any idea?

Perplexing.  A quick scan of the gtk+ sources on git.gnome.org shows  
that the cell's visible property is honored by TreeViewColumn when  
processing each row, so this should work just fine.  I may be  
misreading that (gtktreeviewcolumn.c is 3755 lines and a web browser  
is not as good for reading code as vim).

Sanity check:  do you have the constants TRUE and FALSE defined?   
(e.g. from 'use Glib qw(:constants)').  Is strict turned on?  If perl  
is not being properly strict, it may be interpreting the bareword  
FALSE as a string, and 'FALSE' is not an empty string and therefore is  
logically true.


What if you set the other properties before setting visible, e.g.

    } else {
        # we should NOT show the progress bar
        $cell->set (text => '', value => 0, width => 0, visible =>  
FALSE);



--
Doing a good job around here is like wetting your pants in a dark  
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  -- unknown