def _background(self):
with _freetype_lock:
return ttf_call(
TTF_RenderUTF8_Blended, self.font.load(), self.txt.encode('utf-8'),
SDL_Color(*self.color),
_check_error=lambda rv: not rv
)
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(self):
self._file = rw_from_object(io.BytesIO(self._data.load()))
# We have to keep the file around because freetype doesn't load
# everything at once, resulting in segfaults.
with _freetype_lock:
# Doing this so that we "refcount" the FT_Library internal to SDL_ttf
# (TTF_CloseFont is often called after system cleanup)
ttf_call(TTF_Init, _check_error=lambda rv: rv == -1)
if self.index is None:
return ttf_call(
TTF_OpenFontRW, self._file, False, self.size,
_check_error=lambda rv: not rv
)
else:
return ttf_call(
TTF_OpenFontIndexRW, self._file, False, self.size, self.index,
_check_error=lambda rv: not rv
)
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)