Scrollbar size of iconview not adjusted to the actual size needed.

[rubenv]

When you zoom in, the scrollbar should become longer. Zooming out should cause it to disappear. It means that we're invalidating wrong.

I think the culprit will be here, in PhotoGridViewLayout:

    public void Invalidate ()
    {
        InvalidateChildSize ();
        InvalidateChildLayout ();
        InvalidateVirtualSize ();
        InvalidateChildCollection ();
        View.QueueDraw ();
    }

The order is probably wrong. Also, I'm not sure if all of them are needed.