pixelaccess.py 文件源码

def _setitem(self, start, end, value):
        target = None
        if self.itemsize == 1:
            target = ctypes.cast(self.source, ctypes.POINTER(ctypes.c_ubyte))
        elif self.itemsize == 2:
            target = ctypes.cast(self.source, ctypes.POINTER(ctypes.c_ushort))
        elif self.itemsize == 3:
            # TODO
            raise NotImplementedError("unsupported bpp")
        elif self.itemsize == 4:
            target = ctypes.cast(self.source, ctypes.POINTER(ctypes.c_uint))
        value = prepare_color(value, self._surface)
        target[start // self.itemsize] = value