a rectangle is *much* faster to paint than a simple ShapeItem,
so this is a safer choice. We still need to create the paint
method so we can use the correct roundness for the rectangle.
Currently it's white with a 1px solid line - terrible. :)
Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>