Hello all,
me and Lionel Chauvin are working on bringing appmenu support to KWin.
First, there is kded-appmenu, a kded module needed to enable multiples applications (krunner, kwin, ...) to import menu at the same time.
https://projects.kde.org/projects/playground/base/kded-appmenu
And then this kde-workspace branch:
https://gitorious.org/kde-workspace-appmenu
Here a video showing how it looks:
We hope this in KDE 4.9.
Here the patch for KDE 4.8:
http://adishatz.1s.fr/~gnumdk/appmenu.diff
Regards,