def save_thumbnail(self, image_file):
"""Save the thumbnail for this image. image_file should be a file-like
object containing the full-sized image.
"""
self.thumbnail_extension = util.get_image_extension(image_file)
image_file.seek(0)
self._save_original_thumbnail(image_file)
for width, height in self.THUMBNAIL_SIZES:
image_file.seek(0)
self._make_thumbnail(image_file, width, height)
self.save()
def test_thumbnails_converted_to_jpeg(self):
self.login_and_submit_url()
self.submit(thumbnail_file=
open(test_data_path('thumbnail_square.png')))
channel = self.get_last_channel()
self.assertTrue(channel.thumbnail_exists())
for size in channel.THUMBNAIL_SIZES:
path = channel.thumb_path('%dx%d' % size)
self.assertTrue(os.path.exists(path))
self.assertEquals(os.path.splitext(path)[1], '.jpeg')
self.assertEquals(util.get_image_extension(
file(path)), 'jpeg')
def clean(self, value, initial):
if not value:
if self.required:
raise forms.ValidationError(_('This field is required.'))
return None
try:
ext = util.get_image_extension(value)
except ValueError:
raise forms.ValidationError(_('Not a valid image'))
else:
if not ext:
raise forms.ValidationError(
_('Not an image in a format we support.'))
return value
def clean(self, value, initial):
if not value:
if self.required:
raise forms.ValidationError(_('This field is required.'))
return None
try:
ext = util.get_image_extension(value)
except ValueError:
raise forms.ValidationError(_('Not a valid image'))
else:
if not ext:
raise forms.ValidationError(
_('Not an image in a format we support.'))
return value
def update_thumbnails(self, overwrite=False, sizes=None):
"""Recreate the thumbnails using the original data."""
if self.thumbnail_extension is None:
pattern = self.thumb_path('original')
pattern = pattern.replace("missing.png", "%d.*" % self.id)
matches = glob(pattern)
if matches:
self.thumbnail_extension = util.get_image_extension(
file(matches[0]))
self.save()
Thumbnailable.refresh_thumbnails(self, overwrite, sizes)
for item in self.items.order_by('-id'):
try:
item.refresh_thumbnails(overwrite, sizes)
except: pass
def update_thumbnails(self, overwrite=False, sizes=None):
"""Recreate the thumbnails using the original data."""
if self.thumbnail_extension is None:
pattern = self.thumb_path('original')
pattern = pattern.replace("missing.png", "%d.*" % self.id)
matches = glob(pattern)
if matches:
self.thumbnail_extension = util.get_image_extension(
file(matches[0]))
self.save()
Thumbnailable.refresh_thumbnails(self, overwrite, sizes)
for item in self.items.order_by('-id'):
try:
item.refresh_thumbnails(overwrite, sizes)
except:
pass
