* Creates the renderer as soon as the visual is on the stage,
otherwise flags are not set/updated. Create the renderer
even there is no text or the area's size is zero.
* Only destroys the renderer when the visual is off the stage.
Do not destroy the renderer if there is no text or the area's
size is zero.
Change-Id: I6d621399767dd7a603e758d59850d9f6ad1c81f1
Signed-off-by: Victor Cebollada <v.cebollada@samsung.com>