Comment 63 for bug 187540

Here is another patch.

It tries to attack the root cause of the problem: the window list doesn't handle vertical layout as such but as a case of tall and narrow horizontal layout. So I've:
- added indication of the orientation,
- passed the orientation from the applet,
- modified the computation of the layout using the orientation (in some place I test the orientation and duplicate the computation mutatis mutandis)

There is still work to do. For instance if you want a wide vertical patch, with my patch it doesn't use more than one column even when it would be better to do so.

--
Jean-Marc