def get_thumbnail(self, size='small'):
"""Return a dict with two keys:
- hide: True if this item shouldn't show a thumbnail
- url: The URL to the thumbnail image (None if hide is True)
The result of the method is cached.
This logic is old and kind of weird, it might need review"""
thumbnail = cache.get('version.%s.thumbnail.%s' % (self.id, size))
if thumbnail is None:
if self.article and self.article.hide_thumbnail:
thumbnail = {
'hide': True,
'url': None,
}
else:
if self.article and self.article.thumbnail is not None:
thumbnail = {
'hide': False,
'url': self.article.thumbnail,
}
else:
# Define "main image" as the earliest one occurring (sorted by row, column, content)
content = self.get_first_image_content()
if content is not None:
thumbnail = {
'hide': False,
'url': json.loads(content.content)['src'],
}
else:
# There are no images in this article (shouldn't really happen)
thumbnail = {
'hide': True,
'url': None,
}
# Statically use the 150px version. This should be optimized; save
# the available sizes with the model and use the smallest appropriate one.
if thumbnail['url'] is not None and Image.url_is_local(thumbnail['url']):
if size == 'small':
size_string = str(min(settings.THUMB_SIZES))
else:
size_string = str(settings.THUMB_SIZES[-2])
t = thumbnail['url']
# Remove previous size spec if existing
t = re.sub('-\d+(?P<ext>\.[a-z]{3}[a-z]?)$', '\g<ext>', t)
thumbnail['url'] = '%s-%s%s' % (
t[:t.rfind('.')],
size_string,
t[t.rfind('.'):]
)
cache.set('version.%s.thumbnail.%s' % (self.id, size), thumbnail, 60 * 60 * 24)
return thumbnail
def image_width(value, arg=940):
"""
Will return URL with image version width appended to file name if width is valid, or first in THUMB_SIZES if not
"""
width = int(arg)
if not Image.url_is_local(value):
return value
if width not in settings.THUMB_SIZES:
width = settings.THUMB_SIZES[0]
return re.sub(r"(.+)\.(.+)$", r"\1-%s.\2" % width, value)
def _format_thumbnail_url(url, size):
"""Create and return thumbnail url
Adds correct size query parameter if it's a local file.
"""
if not Image.url_is_local(url):
return url
if size == 'small':
size_string = str(min(settings.THUMB_SIZES))
else:
size_string = str(settings.THUMB_SIZES[-2])
# Remove previous size spec if existing
url = re.sub('-\d+(?P<ext>\.[a-z]{3}[a-z]?)$', '\g<ext>', url)
url = '%s-%s%s' % (
url[:url.rfind('.')],
size_string,
url[url.rfind('.'):]
)
return url
def get_image_source(self):
if self.type != 'image':
raise Exception("You can only call this method on image contents, check your code logic")
source = self.get_content['src']
if not Image.url_is_local(source):
# Not an image from the image archive; don't touch it
return source
for size in settings.THUMB_SIZES:
if ('-%s') % size in source:
return source
column_size = settings.COLUMN_SPAN_MAP[12 // self.column.span]
if column_size > max(settings.THUMB_SIZES):
# No thumbs are large enough, use the original
# Not technically possible right now (the largest column is 940px and the largest thumb is 1880)
return source
else:
thumb_size = min([t for t in settings.THUMB_SIZES if t >= column_size])
name, extension = source.rsplit('.', 1)
return '%s-%s.%s' % (name, thumb_size, extension)