def it_can_construct_from_an_image_blob(self, blob_, BytesIO_,
_from_stream_, stream_, image_):
image = Image.from_blob(blob_)
BytesIO_.assert_called_once_with(blob_)
_from_stream_.assert_called_once_with(stream_, blob_)
assert image is image_
def it_can_construct_from_an_image_stream(self, from_stream_fixture):
stream_, blob_, filename_in = from_stream_fixture[:3]
_ImageHeaderFactory_, image_header_ = from_stream_fixture[3:5]
Image__init_, filename_out = from_stream_fixture[5:]
image = Image._from_stream(stream_, blob_, filename_in)
_ImageHeaderFactory_.assert_called_once_with(stream_)
Image__init_.assert_called_once_with(ANY, blob_, filename_out,
image_header_)
assert isinstance(image, Image)
def get_or_add_image_part(self, image_descriptor):
"""Return |ImagePart| object containing image identified by *image_descriptor*.
The image-part is newly created if a matching one is not present in the
collection.
"""
image = Image.from_file(image_descriptor)
matching_image_part = self._get_by_sha1(image.sha1)
if matching_image_part is not None:
return matching_image_part
return self._add_image_part(image)
def it_correctly_characterizes_known_images(self, known_image_fixture):
image_path, characteristics = known_image_fixture
ext, content_type, px_width, px_height, horz_dpi, vert_dpi = (
characteristics)
with open(test_file(image_path), 'rb') as stream:
image = Image.from_file(stream)
assert image.content_type == content_type
assert image.ext == ext
assert image.px_width == px_width
assert image.px_height == px_height
assert image.horz_dpi == horz_dpi
assert image.vert_dpi == vert_dpi
def dimensions_fixture(self, request):
image_file_path = test_file('monty-truth.png')
image = Image.from_file(image_file_path)
expected_cx, expected_cy = 1905000, 2717800
# case 1: image part is loaded by PartFactory w/no Image inst
if request.param == 'loaded':
partname = PackURI('/word/media/image1.png')
content_type = CT.PNG
image_part = ImagePart.load(partname, content_type, image.blob,
None)
# case 2: image part is newly created from image file
elif request.param == 'new':
image_part = ImagePart.from_image(image, None)
return image_part, expected_cx, expected_cy
def it_knows_the_image_content_type(self, content_type_fixture):
image_header_, content_type = content_type_fixture
image = Image(None, None, image_header_)
assert image.content_type == content_type
def it_provides_access_to_the_image_blob(self):
blob = b'foobar'
image = Image(blob, None, None)
assert image.blob == blob
def it_can_construct_from_an_image_file_like(self, from_filelike_fixture):
image_stream, _from_stream_, blob, image_ = from_filelike_fixture
image = Image.from_file(image_stream)
_from_stream_.assert_called_once_with(image_stream, blob, None)
assert image is image_
def it_can_construct_from_an_image_path(self, from_path_fixture):
image_path, _from_stream_, stream_, blob, filename, image_ = (
from_path_fixture)
image = Image.from_file(image_path)
_from_stream_.assert_called_once_with(stream_, blob, filename)
assert image is image_
def scale_fixture(self, request, width_prop_, height_prop_):
width, height, scaled_width, scaled_height = request.param
width_prop_.return_value = Emu(1000)
height_prop_.return_value = Emu(2000)
image = Image(None, None, None)
return image, width, height, (scaled_width, scaled_height)
def it_knows_the_sha1_of_its_image(self):
blob = b'fO0Bar'
image = Image(blob, None, None)
assert image.sha1 == '4921e7002ddfba690a937d54bda226a7b8bdeb68'
def it_knows_the_image_filename_extension(self):
image = Image(None, 'foobar.png', None)
assert image.ext == 'png'
def it_knows_the_image_filename(self):
filename = 'foobar.png'
image = Image(None, filename, None)
assert image.filename == filename
def it_knows_the_image_px_dimensions(self, dimensions_fixture):
image_header_, px_width, px_height = dimensions_fixture
image = Image(None, None, image_header_)
assert image.px_width == px_width
assert image.px_height == px_height
def size_fixture(self, image_header_):
image_header_.px_width, image_header_.px_height = 150, 75
image_header_.horz_dpi, image_header_.vert_dpi = 72, 200
image = Image(None, None, image_header_)
return image, 1905000, 342900
def it_knows_the_horz_and_vert_dpi_of_the_image(self, dpi_fixture):
image_header_, horz_dpi, vert_dpi = dpi_fixture
image = Image(None, None, image_header_)
assert image.horz_dpi == horz_dpi
assert image.vert_dpi == vert_dpi
def image(self):
if self._image is None:
self._image = Image.from_blob(self.blob)
return self._image