The patch in bug #3361 implements scrolling for viewports in the pager. The invert option makes no sense, so that could be skipped.
Created attachment 3665 Makes the mouse wheel over the pager switch between viewports The comment about relation with the patches for bug #3361 is interesting. Unluckily, I haven't noticed the related patches from #3361 before fixing it myself... but let me attach my own patch for viewport scrolling, maybe someone finds it useful ;-).
Created attachment 3666 Makes the mouse wheel over the pager switch between viewports (cleaner version)
Thanks for looking into this a couple of comments on the patch without trying it. - There is a macro in common/ to check the list length: LIST_HAS_ONE_ENTRY. - Indentation does not follow the style used in xfce4-panel. - += 1 could be ++ as well, minor thingy. - Take a look at http://git.xfce.org/xfce/xfce4-panel/tree/plugins/tasklist/tasklist-widget.c#n2754
Anything new here? :)