def test_generate_filename(self):
self.assertEqual(
generate_filename(SourceFile('url'), '100x200', 'center'),
['0af', 'a360db703bd5c2fe7c83843ce7738a0a6d37b'])
self.assertEqual(
generate_filename(SourceFile('url'), '200x200', 'center'),
['851', '521c21fe9709802e9d4eb20a5fe84c18cd3ad'])
def test_django_image_files(self):
from django.db.models.fields import files
field = files.FileField()
f = SourceFile(files.FieldFile(field=field, instance=None, name=self.FILE_PATH))
self.assertEqual(f.file, self.FILE_PATH)
f = SourceFile(files.ImageFieldFile(field=field, instance=None, name=self.FILE_PATH))
self.assertEqual(f.file, self.FILE_PATH)
def test_base64_encoded_string(self):
file = SourceFile(data.BASE64_STRING_OF_IMAGE)
self.assertEqual(
hashlib.sha1(file.open().getvalue()).hexdigest(),
'6666212f5302426c845ecb2a2901fae021735f24'
)
image = Image.open(BytesIO(file.open().read()))
self.assertIsNotNone(image.load())
def setUp(self):
self.engine = self.ENGINE()
self.filename = os.path.join(os.path.dirname(__file__),
'test_image.jpg')
self.file = SourceFile(self.filename)
self.url = SourceFile('http://puppies.lkng.me/400x600/')
image = Image.new('L', (400, 600))
image.save(self.filename)
def test_engine_get_format(self):
image = self.engine.engine_load_image(self.file)
self.assertEqual(self.engine.engine_get_format(image), 'JPEG')
png_path = os.path.join(os.path.dirname(__file__), 'test_image.png')
Image.new('L', (400, 600)).save(png_path)
image = self.engine.engine_load_image(SourceFile(png_path))
self.assertEqual(self.engine.engine_get_format(image), 'PNG')
os.remove(png_path)
png_path = os.path.join(os.path.dirname(__file__), 'test_image.gif')
Image.new('L', (400, 600)).save(png_path)
image = self.engine.engine_load_image(SourceFile(png_path))
self.assertEqual(self.engine.engine_get_format(image), 'GIF')
os.remove(png_path)
def get_thumbnail(original, size, **options):
"""
Creates or gets an already created thumbnail for the given image with the given size and
options.
:param original: File-path, url or base64-encoded string of the image that you want an
thumbnail.
:param size: String with the wanted thumbnail size. On the form: ``200x200``, ``200`` or
``x200``.
:param crop: Crop settings, should be ``center``, ``top``, ``right``, ``bottom``, ``left``.
:param force: If set to ``True`` the thumbnail will be created even if it exists before.
:param quality: Overrides ``THUMBNAIL_QUALITY``, will set the quality used by the backend while
saving the thumbnail.
:param scale_up: Overrides ``THUMBNAIL_SCALE_UP``, if set to ``True`` the image will be scaled
up if necessary.
:param colormode: Overrides ``THUMBNAIL_COLORMODE``, The default colormode for thumbnails.
Supports all values supported by pillow. In other engines there is a best
effort translation from pillow modes to the modes supported by the current
engine.
:param format: Overrides the format the thumbnail will be saved in. This will override both the
detected file type as well as the one specified in ``THUMBNAIL_FALLBACK_FORMAT``.
:return: A Thumbnail object
"""
engine = get_engine()
cache = get_cache_backend()
original = SourceFile(original)
crop = options.get('crop', None)
options = engine.evaluate_options(options)
thumbnail_name = generate_filename(original, size, crop)
if settings.THUMBNAIL_DUMMY:
engine = DummyEngine()
return engine.get_thumbnail(thumbnail_name, engine.parse_size(size),
crop, options)
cached = cache.get(thumbnail_name)
force = options is not None and 'force' in options and options['force']
if not force and cached:
return cached
thumbnail = Thumbnail(thumbnail_name, engine.get_format(original, options))
if force or not thumbnail.exists:
size = engine.parse_size(size)
thumbnail.image = engine.get_thumbnail(original, size, crop, options)
thumbnail.save(options)
for resolution in settings.THUMBNAIL_ALTERNATIVE_RESOLUTIONS:
resolution_size = engine.calculate_alternative_resolution_size(
resolution, size)
image = engine.get_thumbnail(original, resolution_size, crop,
options)
thumbnail.save_alternative_resolution(resolution, image, options)
cache.set(thumbnail)
return thumbnail
def test_init(self):
self.assertEqual(SourceFile(self.FILE_PATH).file, self.FILE_PATH)
def setUp(self):
self.engine = DummyEngine()
self.filename = os.path.join(os.path.dirname(__file__),
'test_image.jpg')
self.file = SourceFile(self.filename)
self.url = SourceFile('http://puppies.lkng.me/400x600/')
