Borrowed the code from KMessageWidget from Aurelian Gateau, Kdelibs,
to better show passive information and notifications. instead of a
popup blowing in the user's face, a nice, animated and well designed
widget will gracefully fade-in, show the notes, and fade out when
not needed anymore.
Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>