[pygtk] Viewport set-scroll-adjustments signal

[Scott Horowitz]

> Perhaps you can use that code as a base for your own widget, it'll be
> a lot easier to develop since it's all python.
>
> Johan

Thanks Johan.  I will look into this as a backup but I would greatly
prefer not to have to rewrite my own app with different widgets. I'm
pretty new to pygtk so it would take me a while :)

I would just like to understand why what I'm expecting does not occur.
Here is a simple demonstration.

http://www.theskyiscrape.com/scott/test.py

If you run this as 'test.py /path/to/some/image.jpg", it displays the
image inside a viewport with scrollbars (from a ScrolledWindow). When
you click the scrollbars to pan the image, "test" should get printed
out via the set-scroll-adjustments signal. As you can see, it doesn't.

According to the documentation, "The "set-scroll-adjustments" signal
is emitted when one or both of the horizontal and vertical
gtk.Adjustment objects is changed." Surely I am either using this
signal incorrectly or have misinterpreted when this signal should
tripper. Or the signal does not do as advertised.

Any advice is appreciated,
Scott