def get_pil_img_from_url(cls, url, cache=False, grey=False):
'''
Returns a PIL image instance from an image resource at the given URL
cache=True to cache subsequent calls
grey=True to return a greyscale image
'''
#print url
ret = None
from django.template.defaultfilters import slugify
disk_path = os.path.join(settings.IMAGE_CACHE_ROOT, '%s.jpg' % slugify(url))
if not cache or not os.path.exists(disk_path):
from digipal.management.commands.utils import web_fetch, write_file
#print '\tDL: %s' % url
res = web_fetch(url)
if res['body']:
write_file(disk_path, res['body'])
if os.path.exists(disk_path):
from PIL import Image
ret = Image.open(disk_path)
if grey:
ret = ret.convert('L')
# We resize the image to the requested size
asked = []
import re
for d in [u'WID', u'HEI']:
l = re.sub(ur'.*' + re.escape(d) + ur'=(\d+).*', ur'\1', url)
if l != url:
asked.append(int(l))
if len(asked) == 2:
import PIL
ret = ret.resize(asked, PIL.Image.ANTIALIAS)
return ret
def get_img_size(self):
''' Returns the size of the full res. image as a list: [width, height] '''
return self.dimensions()
cached_sizes = getattr(self, 'cached_sizes', {})
url = self.iipimage.full_base_url+'&OBJ=Max-size'
if url not in cached_sizes:
cached_sizes[url] = [0, 0]
from digipal.management.commands.utils import web_fetch
res = web_fetch(url)
if not res['error']:
import re
matches = re.match(r'^.*?Max-size:(\d+)\s+(\d+).*?$', res['body'].strip())
if matches:
cached_sizes[url] = [int(matches.group(1)), int(matches.group(2))]
self.cached_sizes = cached_sizes
return cached_sizes[url]
def get_pil_img_from_url(cls, url, cache=False, grey=False):
'''
Returns a PIL image instance from an image resource at the given URL
cache=True to cache subsequent calls
grey=True to return a greyscale image
'''
#print url
ret = None
from django.template.defaultfilters import slugify
disk_path = os.path.join(settings.IMAGE_CACHE_ROOT,
'%s.jpg' % slugify(url))
if not cache or not os.path.exists(disk_path):
from digipal.management.commands.utils import web_fetch, write_file
#print '\tDL: %s' % url
res = web_fetch(url)
if res['body']:
write_file(disk_path, res['body'])
if os.path.exists(disk_path):
from PIL import Image
ret = Image.open(disk_path)
if grey:
ret = ret.convert('L')
# We resize the image to the requested size
asked = []
import re
for d in [u'WID', u'HEI']:
l = re.sub(ur'.*' + re.escape(d) + ur'=(\d+).*', ur'\1', url)
if l != url:
asked.append(int(l))
if len(asked) == 2:
import PIL
ret = ret.resize(asked, PIL.Image.ANTIALIAS)
return ret
def get_img_size(self):
''' Returns the size of the full res. image as a list: [width, height] '''
return self.dimensions()
cached_sizes = getattr(self, 'cached_sizes', {})
url = self.iipimage.full_base_url + '&OBJ=Max-size'
if url not in cached_sizes:
cached_sizes[url] = [0, 0]
from digipal.management.commands.utils import web_fetch
res = web_fetch(url)
if not res['error']:
import re
matches = re.match(r'^.*?Max-size:(\d+)\s+(\d+).*?$',
res['body'].strip())
if matches:
cached_sizes[url] = [
int(matches.group(1)),
int(matches.group(2))
]
self.cached_sizes = cached_sizes
return cached_sizes[url]
