def update(rectangle=None):
""" update(rectangle=None) -> None
update(rectangle_list) -> None
Update portions of the screen for software displays
"""
check_video()
screen = sdl.SDL_GetVideoSurface()
if not screen:
raise SDLError("Display mode not set")
if (screen.flags & sdl.SDL_OPENGL):
raise SDLError("Cannot update an OPENGL display")
if not rectangle:
sdl.SDL_UpdateRect(screen, 0, 0, 0, 0)
return
try:
if hasattr(rectangle, '__iter__'):
# it can either be a rect style 4-tuple or
# a sequence of rects or rect styles
try:
int(rectangle[0])
rects = (rectangle, )
except (ValueError, TypeError):
rects = rectangle
else:
rects = (rectangle, )
if len(rects) == 1:
rect = game_rect_from_obj(rects[0])
if screen_crop_rect(rect, screen.w, screen.h):
sdl.SDL_UpdateRect(screen, rect.x, rect.y, rect.w, rect.h)
return
rect_array = ffi.new('SDL_Rect[]', len(rects))
count = 0
for obj in rects:
if not obj:
continue
rect = game_rect_from_obj(obj)
if screen_crop_rect(rect, screen.w, screen.h):
sdlrect = rect_array[count]
sdlrect.x = rect.x
sdlrect.y = rect.y
sdlrect.w = rect.w
sdlrect.h = rect.h
count += 1
sdl.SDL_UpdateRects(screen, count, rect_array)
except (NotImplementedError, TypeError):
raise ValueError(
"update requires a rectstyle or sequence of recstyles")
def update(rectangle=None):
""" update(rectangle=None) -> None
update(rectangle_list) -> None
Update portions of the screen for software displays
"""
check_video()
screen = sdl.SDL_GetVideoSurface()
if not screen:
raise SDLError("Display mode not set")
if (screen.flags & sdl.SDL_OPENGL):
raise SDLError("Cannot update an OPENGL display")
if not rectangle:
sdl.SDL_UpdateRect(screen, 0, 0, 0, 0)
return
try:
if hasattr(rectangle, '__iter__'):
# it can either be a rect style 4-tuple or
# a sequence of rects or rect styles
try:
int(rectangle[0])
rects = (rectangle, )
except (ValueError, TypeError):
rects = rectangle
else:
rects = (rectangle, )
if len(rects) == 1:
rect = game_rect_from_obj(rects[0])
if screen_crop_rect(rect, screen.w, screen.h):
sdl.SDL_UpdateRect(screen, rect.x, rect.y, rect.w, rect.h)
return
rect_array = ffi.new('SDL_Rect[]', len(rects))
count = 0
for obj in rects:
if not obj:
continue
rect = game_rect_from_obj(obj)
if screen_crop_rect(rect, screen.w, screen.h):
sdlrect = rect_array[count]
sdlrect.x = rect.x
sdlrect.y = rect.y
sdlrect.w = rect.w
sdlrect.h = rect.h
count += 1
sdl.SDL_UpdateRects(screen, count, rect_array)
except (NotImplementedError, TypeError):
raise ValueError("update requires a rectstyle or sequence of recstyles")
def subsurface(self, *rect):
self.check_opengl()
try:
if hasattr(rect[0], '__iter__'):
rect = game_rect_from_obj(rect[0])
else:
rect = game_rect_from_obj(rect)
except TypeError:
raise ValueError("not a valid rect style object")
if (rect.x < 0 or rect.x + rect.w > self._c_surface.w or rect.y < 0 or
rect.y + rect.h > self._c_surface.h):
raise ValueError("subsurface rectangle outside surface area")
with locked(self._c_surface):
format = self._format
pixeloffset = (rect.x * format.BytesPerPixel +
rect.y * self._c_surface.pitch)
startpixel = ffi.cast("char*", self._c_surface.pixels) + pixeloffset
surf = self._c_surface
sub = sdl.SDL_CreateRGBSurfaceFrom(startpixel, rect.w, rect.h,
format.BitsPerPixel, surf.pitch,
format.Rmask, format.Gmask,
format.Bmask, format.Amask)
if not sub:
raise SDLError.from_sdl_error()
if format.BytesPerPixel == 1 and format.palette:
sdl.SDL_SetPalette(sub, sdl.SDL_LOGPAL,
format.palette.colors, 0,
format.palette.ncolors);
if surf.flags & sdl.SDL_SRCALPHA:
sdl.SDL_SetAlpha(sub, surf.flags & sdl.SDL_SRCALPHA,
format.alpha);
if surf.flags & sdl.SDL_SRCCOLORKEY:
sdl.SDL_SetColorKey(sub, surf.flags & (sdl.SDL_SRCCOLORKEY |
sdl.SDL_RLEACCEL),
format.colorkey)
subsurface = Surface._from_sdl_surface(sub)
data = SubSurfaceData(self, pixeloffset, rect.x, rect.y)
subsurface.subsurfacedata = data
return subsurface
def subsurface(self, *rect):
self.check_opengl()
try:
if hasattr(rect[0], '__iter__'):
rect = game_rect_from_obj(rect[0])
else:
rect = game_rect_from_obj(rect)
except TypeError:
raise ValueError("not a valid rect style object")
if (rect.x < 0 or rect.x + rect.w > self._c_surface.w or rect.y < 0 or
rect.y + rect.h > self._c_surface.h):
raise ValueError("subsurface rectangle outside surface area")
with locked(self._c_surface):
format = self._format
pixeloffset = (rect.x * format.BytesPerPixel +
rect.y * self._c_surface.pitch)
startpixel = ffi.cast("char*", self._c_surface.pixels) + pixeloffset
surf = self._c_surface
sub = sdl.SDL_CreateRGBSurfaceFrom(startpixel, rect.w, rect.h,
format.BitsPerPixel, surf.pitch,
format.Rmask, format.Gmask,
format.Bmask, format.Amask)
if not sub:
raise SDLError.from_sdl_error()
if format.BytesPerPixel == 1 and format.palette:
sdl.SDL_SetPalette(sub, sdl.SDL_LOGPAL,
format.palette.colors, 0,
format.palette.ncolors);
if surf.flags & sdl.SDL_SRCALPHA:
sdl.SDL_SetAlpha(sub, surf.flags & sdl.SDL_SRCALPHA,
format.alpha);
if surf.flags & sdl.SDL_SRCCOLORKEY:
sdl.SDL_SetColorKey(sub, surf.flags & (sdl.SDL_SRCCOLORKEY |
sdl.SDL_RLEACCEL),
format.colorkey)
subsurface = Surface._from_sdl_surface(sub)
data = SubSurfaceData(self, pixeloffset, rect.x, rect.y)
subsurface.subsurfacedata = data
return subsurface
