Re: Which column in a treeview did a user click in?

["muppet" <scott asofyet org>]

Daniel Kasak wrote:
> Hi all.
>
> I'd like to set up different things to happen when users click in ( or
> at ) different columns in a treeview. At the moment, I'm connecting to
> the treeview's button-press-event, but that doesn't let me figure out
> which column the user was pointing at. Also, I'd like to be able to do
> this both with columns that are editable, and columns that aren't editable.
>
> I've found that a TreeViewColumn has a 'clicked' signal, but that's only
> for the column *heading*.
>
> Is this possible?


> From Gtk2::TreeView(3pm):

   path = $tree_view->get_path_at_pos ($x, $y)

   (path, column, cell_x, cell_y) = $tree_view->get_path_at_pos ($x, $y)

       * $x (integer)
       * $y (integer)

       Finds the path at the point ($x, $y), relative to widget coordi-
       nates. That is, $x and $y are relative to an event?s coordinates.
       $x and $y must come from an event on the $tree_view only where
       "$event->window == $tree_view->get_bin_window". It is primarily for
       things like popup menus.  In scalar context, returns the
       Gtk2::TreePath, in array context, adds the Gtk2::TreeViewColumn,
       and $x and $y translated to be relative to the cell.  This function
       is only meaningful if $tree_view is realized.


So, something like

    $treeview->signal_connect (button_press_event => sub {
            my ($treeview, $event) = @_;
            if ($event->window == $treeview->get_bin_window) {
                # user clicked in the treeview proper, let's find
                # out exact-i-cally where:
                my ($path, $column, $cell_x, $cell_y) =
                    $treeview->get_path_at_pos ($event->x, $event->y);
                # $path is the Gtk2::TreePath of the row of the click
                # $column is the Gtk2::TreeViewColumn of the click
                # $cell_x, $cell_y are the location within the
                # cell of the click.
                do_stuff (...);
            }
    });



-- 
muppet <scott at asofyet dot org>