def draw (self, handle_dirty = True):
"""Update the display (:attr:`orig_sfc`).
:arg handle_dirty: whether to propagate changed areas to the transformation
pipeline implemented by
:class:`Graphic <engine.gfx.graphic.Graphic>`. Pass
``False`` if you don't intend to use this manager as a
graphic.
Returns ``True`` if the entire surface changed, or a list of rects that cover
changed parts of the surface, or ``False`` if nothing changed.
"""
layers = self.layers
sfc = self._orig_sfc
if not layers or sfc is None:
return False
graphics = self.graphics
dirty = self._gm_dirty
self._gm_dirty = []
if dirty is True:
dirty = [sfc.get_rect()]
elif dirty is False:
dirty = []
dirty = fastdraw(layers, sfc, graphics, dirty)
if dirty and handle_dirty:
Graphic.dirty(self, *dirty)
if self._orig_dirty:
dirty = combine_drawn(dirty, self._orig_dirty)
if not handle_dirty:
self._orig_dirty = False
return dirty
def draw (self):
"""Update the display.
Returns ``True`` if the entire surface changed, or a list of rects that cover
changed parts of the surface, or ``False`` if nothing changed.
"""
layers = self.layers
sfc = self._surface
if not layers or sfc is None:
return False
graphics = self.graphics
dirty = self._gm_dirty
self._gm_dirty = []
return fastdraw(layers, sfc, graphics, dirty)