def __enter__(self):
super().__enter__()
img_call(IMG_Init, IMG_INIT_JPG | IMG_INIT_PNG | IMG_INIT_TIF)
ttf_call(TTF_Init, _check_error=lambda rv: rv == -1)
self.window = ctypes.POINTER(SDL_Window)()
self.renderer = ctypes.POINTER(SDL_Renderer)()
sdl_call(
SDL_CreateWindowAndRenderer,
self.resolution[0], # Width
self.resolution[1], # Height
0, # Flags
# SDL_WINDOW_ALLOW_HIGHDPI - Allow the renderer to work in HiDPI natively
ctypes.byref(self.window),
ctypes.byref(self.renderer),
_check_error=lambda rv: rv < 0)
# NOTE: It looks like SDL_RENDERER_PRESENTVSYNC will cause SDL_RenderPresent() to block?
sdl_call(SDL_SetWindowTitle, self.window,
self.window_title.encode('utf-8'))
def background_parse(self, data):
file = rw_from_object(io.BytesIO(data))
# ^^^^ is a pure-python emulation, does not need cleanup.
surface = img_call(IMG_Load_RW,
file,
False,
_check_error=lambda rv: not rv)
sdl_call(SDL_SetSurfaceBlendMode,
surface,
SDL_BLENDMODE_BLEND,
_check_error=lambda rv: rv < 0)
return surface
def __exit__(self, *exc):
sdl_call(SDL_DestroyRenderer, self.renderer)
sdl_call(SDL_DestroyWindow, self.window)
ttf_call(TTF_Quit)
img_call(IMG_Quit)
super().__exit__(*exc)