def _generate_version(self, version_path, version_suffix, options):
"""
Generate Version for an Image.
value has to be a path relative to the storage location.
"""
tmpfile = File(tempfile.NamedTemporaryFile())
try:
f = self.site.storage.open(self.path)
except IOError:
return ""
im = Image.open(f)
version_dir, version_basename = os.path.split(version_path)
root, ext = os.path.splitext(version_basename)
version = process_image(im, options)
if not version:
version = im
if 'methods' in options:
for m in options['methods']:
if callable(m):
version = m(version)
# IF need Convert RGB
if ext in [".jpg", ".jpeg"] and version.mode not in ("L", "RGB"):
version = version.convert("RGB")
# save version
quality = VERSIONS.get(version_suffix, {}).get("quality",
VERSION_QUALITY)
try:
version.save(
tmpfile,
format=Image.EXTENSION[ext.lower()],
quality=quality,
optimize=(os.path.splitext(version_path)[1] != '.gif'))
except IOError:
version.save(tmpfile,
format=Image.EXTENSION[ext.lower()],
quality=quality)
# remove old version, if any
if version_path != self.site.storage.get_available_name(version_path):
self.site.storage.delete(version_path)
self.site.storage.save(version_path, tmpfile)
# set permissions
if DEFAULT_PERMISSIONS is not None:
os.chmod(self.site.storage.path(version_path), DEFAULT_PERMISSIONS)
return version_path
def _generate_version(self, version_path, options):
"""
Generate Version for an Image.
value has to be a path relative to the storage location.
"""
tmpfile = File(tempfile.NamedTemporaryFile())
try:
f = self.site.storage.open(self.path)
except IOError:
return ""
im = Image.open(f)
version_dir, version_basename = os.path.split(version_path)
root, ext = os.path.splitext(version_basename)
version = process_image(im, options)
if not version:
version = im
if 'methods' in options:
for m in options['methods']:
if callable(m):
version = m(version)
# IF need Convert RGB
if ext in [".jpg", ".jpeg"] and version.mode not in ("L", "RGB"):
version = version.convert("RGB")
# save version
try:
version.save(tmpfile, format=Image.EXTENSION[ext.lower()], quality=VERSION_QUALITY, optimize=(os.path.splitext(version_path)[1] != '.gif'))
except IOError:
version.save(tmpfile, format=Image.EXTENSION[ext.lower()], quality=VERSION_QUALITY)
# remove old version, if any
if version_path != self.site.storage.get_available_name(version_path):
self.site.storage.delete(version_path)
self.site.storage.save(version_path, tmpfile)
# set permissions
if DEFAULT_PERMISSIONS is not None:
os.chmod(self.site.storage.path(version_path), DEFAULT_PERMISSIONS)
return version_path
def test_process_image_calls_only_explicit_provided_processors(self):
version = process_image(self.im, {}, processors=[processor_mark_2])
self.assertFalse(hasattr(version, 'mark_1'))
self.assertTrue(hasattr(version, 'mark_2'))
def test_process_image_calls_the_stack_of_processors_in_settings(self):
version = process_image(self.im, {})
self.assertTrue(hasattr(version, 'mark_1'))
self.assertTrue(hasattr(version, 'mark_2'))
def test_process_image_calls_scale_and_crop(self):
version = process_image(self.im, {'width': 500, 'height': ""})
self.assertEqual(version.size, (500, 375))
def test_process_image_calls_only_explicit_provided_processors(self):
version = process_image(self.im, {}, processors=[processor_mark_2])
self.assertFalse(hasattr(version, 'mark_1'))
self.assertTrue(hasattr(version, 'mark_2'))
def test_process_image_calls_the_stack_of_processors_in_settings(self):
version = process_image(self.im, {})
self.assertTrue(hasattr(version, 'mark_1'))
self.assertTrue(hasattr(version, 'mark_2'))
def test_process_image_calls_scale_and_crop(self):
version = process_image(self.im, {'width': 500, 'height': ""})
self.assertEqual(version.size, (500, 375))
