def tiled(self, size):
size = Size.coerce(size)
new = Image.new(size)
# TODO this returns a bool?
lib.TextureImage(new._stack, self._frame)
magick_raise(self._frame.exception)
return new
def tiled(self, size):
size = Size.coerce(size)
new = Image.new(size)
# TODO this returns a bool?
lib.TextureImage(new._stack, self._frame)
magick_raise(self._frame.exception)
return new
def translucent(self, value):
if bool(value) == self.translucent:
return
if value:
# Set the alpha channel
lib.SetImageAlphaChannel(self._frame, lib.SetAlphaChannel)
else:
# Disable it
lib.SetImageAlphaChannel(self._frame, lib.DeactivateAlphaChannel)
magick_raise(self._frame.exception)
def translucent(self, value):
if bool(value) == self.translucent:
return
if value:
# Set the alpha channel
lib.SetImageAlphaChannel(self._frame, lib.SetAlphaChannel)
else:
# Disable it
lib.SetImageAlphaChannel(self._frame, lib.DeactivateAlphaChannel)
magick_raise(self._frame.exception)
def new(cls, size, fill=None):
"""Create a new image (with one frame) of the given size."""
size = Size.coerce(size)
image_info = blank_image_info()
magick_pixel = blank_magick_pixel()
if fill is None:
# TODO need a way to explicitly create a certain color
fill = RGBColor(0., 0., 0., 0.)
fill._populate_magick_pixel(magick_pixel)
ptr = lib.NewMagickImage(image_info, size.width, size.height, magick_pixel)
magick_raise(ptr.exception)
return cls(ptr)
def new(cls, size, fill=None):
"""Create a new image (with one frame) of the given size."""
size = Size.coerce(size)
image_info = blank_image_info()
magick_pixel = blank_magick_pixel()
if fill is None:
# TODO need a way to explicitly create a certain color
fill = RGBColor(0., 0., 0., 0.)
fill._populate_magick_pixel(magick_pixel)
ptr = lib.NewMagickImage(image_info, size.width, size.height,
magick_pixel)
magick_raise(ptr.exception)
return cls(ptr)
def write(self, filename, format=None):
if not self._frames:
raise EmptyImageError
with open(filename, "wb") as fh:
image_info = blank_image_info()
image_info.file = ffi.cast("FILE *", fh)
# Force writing to a single file
image_info.adjoin = lib.MagickTrue
if format:
# If the caller provided an explicit format, pass it along
# Make sure not to overflow the char[]
# TODO maybe just error out when this happens
image_info.magick = format.encode('ascii')[:lib.MaxTextExtent]
elif self._frames[0]._frame.magick[0] == b'\0':
# Uhoh; no format provided and nothing given by caller
raise MissingFormatError
# TODO detect format from filename if explicitly asked to do so
with self._link_frames(self._frames) as ptr:
lib.WriteImage(image_info, ptr)
magick_raise(ptr.exception)
def write(self, filename, format=None):
if not self._frames:
raise EmptyImageError
with open(filename, "wb") as fh:
image_info = blank_image_info()
image_info.file = ffi.cast("FILE *", fh)
# Force writing to a single file
image_info.adjoin = lib.MagickTrue
if format:
# If the caller provided an explicit format, pass it along
# Make sure not to overflow the char[]
# TODO maybe just error out when this happens
image_info.magick = format.encode('ascii')[:lib.MaxTextExtent]
elif self._frames[0]._frame.magick[0] == b'\0':
# Uhoh; no format provided and nothing given by caller
raise MissingFormatError
# TODO detect format from filename if explicitly asked to do so
with self._link_frames(self._frames) as ptr:
lib.WriteImage(image_info, ptr)
magick_raise(ptr.exception)
def _fix_for_rgba_codec(self):
# Older versions of ImageMagick spit out garbage for the alpha channel
# when writing an alphaless image as "rgba".
if not self._frame.matte:
lib.SetImageAlphaChannel(self._frame, lib.OpaqueAlphaChannel)
magick_raise(self._frame.exception)
def _fix_for_rgba_codec(self):
# Older versions of ImageMagick spit out garbage for the alpha channel
# when writing an alphaless image as "rgba".
if not self._frame.matte:
lib.SetImageAlphaChannel(self._frame, lib.OpaqueAlphaChannel)
magick_raise(self._frame.exception)
