[pygtk] Visible area of a Widget

[Henning Bredel]

Hey,

how can I retrieve the visible area of a widget which lays
within a Viewport in a ScrolledWindow?

Propably a sketch tells it better:


.(0,0) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.(200,0)
|                                   |^|
                                      |
|                                   | |
                                      |
|                                   | |
.(0,20)_______________________________|
|                                   |x|
|                                   |x|
| a = visible_area.get_allocation() |x|
|                                   |x|
| a.x => 0 , a,y => 20              |x|
| a.width => 200 , a.height => 80   |x|
|                                   |x|
|                                   |x|
|___________________________________.(200,100)
                                      |
|                                   | |
                                      |
|_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _|↓|


So, the values within the drawn area are interesting to me,
but I don't know how to get them.

I'd appreciate any help.

Thanks

  Henning

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