Placement of popup ( CellRendererDate from examples )

[Daniel Kasak <dkasak nusconsulting com au>]

Greetings.

I'm using some code from the example folder to provide a 
CellRendererDate in a treeview. I've had some complaints that the 
calendar goes off-screen if the cell being edited is too far down the 
screen.

The code that positions the popup is ( from the cellrendererdate.pl 
example script ):

 # Align the top right edge of the popup with the the bottom right edge 
of the
 # cell.
 my ($x_origin, $y_origin) =  $view -> get_bin_window() -> get_origin();

 $popup -> move(
   $x_origin + $cell_area -> x() + $cell_area -> width() - $popup -> 
allocation() -> width(),
   $y_origin + $cell_area -> y() + $cell_area -> height()
 );

How would I go about modifying this to detect whether the calculated y 
position puts part of the calendar off-screen?

I know ( or I think I know anyway ... I haven't tried it yet ) I can do 
$popup->allocation to get the size of the popup. But how do I get the 
screen size?

--
Daniel Kasak
IT Developer
NUS Consulting Group
Level 5, 77 Pacific Highway
North Sydney, NSW, Australia 2060
T: (+61) 2 9922-7676 / F: (+61) 2 9922 7989
email: dkasak nusconsulting com au
website: http://www.nusconsulting.com.au