def image_crop(context, image, ratio=1.0, size=None, preserve_name=False, preserve_path=False):
"""
{% image_crop image[url] [ratio=1.0] [size=None] %}
"""
# Get instance or string
if isinstance(image, basestring):
image = Image.open(image)
if size:
size = size.split('x')
path = image.filename
i = path.rindex('/')
imgid = 'tmp_' + path[i+1:]
path = path[:i+1]
if not preserve_name:
imgid = uuid.uuid1().hex
imgid = imgid + '.' + image.format.lower()
if not preserve_path:
path = MEDIACONTENT_STATIC_PATH + '/'
filename = path + imgid
nimage = crop_aspect(image, ratio, size)
nimage.save(filename)
image = Image.open(filename)
url = filename
url = re.sub(MEDIA_ROOT, MEDIA_URL, url)
url = re.sub(STATIC_ROOT, STATIC_URL, url)
image.url = url
return image
def image_crop(context,
image,
ratio=1.0,
size=None,
preserve_name=False,
preserve_path=False):
"""
{% image_crop image[url] [ratio=1.0] [size=None] %}
"""
# Get instance or string
if isinstance(image, basestring):
image = Image.open(image)
if size:
size = size.split('x')
path = image.filename
i = path.rindex('/')
imgid = 'tmp_' + path[i + 1:]
path = path[:i + 1]
if not preserve_name:
imgid = uuid.uuid1().hex
imgid = imgid + '.' + image.format.lower()
if not preserve_path:
path = MEDIACONTENT_STATIC_PATH + '/'
filename = path + imgid
nimage = crop_aspect(image, ratio, size)
nimage.save(filename)
image = Image.open(filename)
url = filename
url = re.sub(MEDIA_ROOT, MEDIA_URL, url)
url = re.sub(STATIC_ROOT, STATIC_URL, url)
image.url = url
return image
def save(self, *args, **kwargs):
changed_image = self.content != self.__original_image
if not self.id and not self.pub_date:
self.pub_date = datetime.datetime.today()
crop_original = kwargs.get('crop_original', False)
super(MediaContent, self).save(*args, **kwargs)
self.mimetype = mimetypes.guess_type(self.content.path)[0]
if self.mimetype:
content_type = self.mimetype.replace('/', '_')
else:
# assume everything else is text/plain
content_type = 'text_plain'
i = self.content.name.rindex('/')
thumbnail = u'%sthumbnail_%s' % (unicode(
self.content.name[:i + 1]), unicode(self.content.name[i + 1:]))
gallery = u'%sgallery_%s' % (unicode(
self.content.name[:i + 1]), unicode(self.content.name[i + 1:]))
orig = self.content.name
if (not self.thumbnail or not self.gallery
or changed_image) and content_type.split('_')[0] == 'image':
img_path = self.content.path
if content_type == 'image_svg+xml':
try:
from nebula.mediacontent import svg_to_png
svg_to_png.convert(img_path, svg_to_png.new_name(img_path))
img_path = svg_to_png.new_name(img_path)
self.content.name = self.content.name[:
-3] + self.content.name[
-3:].replace(
'svg', 'png')
except:
pass
image = Image.open(img_path)
image = convert_to_rgb(image)
image = crop_aspect(image, ratio=1.0)
# hace el thumb
image_thumb = resize(image.copy(), size=self.get_sizes()['thumb'])
image_thumb.save(os.path.join(settings.MEDIA_ROOT, thumbnail))
self.thumbnail = thumbnail
# guarda la imagen para gallery
image_gallery = resize(image.copy(),
size=self.get_sizes()['gallery'])
image_gallery.save(os.path.join(settings.MEDIA_ROOT, gallery))
self.gallery = gallery
# guarda la imagen al tamaño máximo
if crop_original:
image_normal = resize(image.copy(),
size=self.get_sizes()['normal'])
image_normal.save(os.path.join(settings.MEDIA_ROOT, orig))
elif (not self.thumbnail or not self.gallery
or changed_image) and content_type == 'application_pdf':
# Crea una imagen de la primer pagina de un PDF
from subprocess import call
cmd = "gs -q -dQUIET -dPARANOIDSAFER -dBATCH -dNOPAUSE -dNOPROMPT \
-dMaxBitmap=500000000 -dLastPage=1 -dAlignToPixels=0 -dGridFitTT=0 \
-sDEVICE=jpeg -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -r150 \
-sOutputFile=%(fileout)s %(filein)s"
filein = os.path.join(settings.MEDIA_ROOT, self.content.name)
filejpg = self.content.name[:-3] + self.content.name[-3:].replace(
'pdf', 'jpg')
fileout = os.path.join(settings.MEDIA_ROOT, filejpg)
if not os.access(filein, os.R_OK):
raise 'not access %s' % filein
files = {
'filein': filein.replace(' ', '\ '),
'fileout': fileout.replace(' ', '\ '),
}
# devuelve 0 si esta OK
if not call(cmd % files, shell=True):
i = filejpg.rindex('/')
thumbnail = u'%sthumbnail_%s' % (unicode(
filejpg[:i + 1]), unicode(filejpg[i + 1:]))
gallery = u'%sgallery_%s' % (unicode(
filejpg[:i + 1]), unicode(filejpg[i + 1:]))
image = Image.open(fileout)
image = convert_to_rgb(image)
#image = crop_aspect(image, ratio=1.0)
# hace el thumb
image_thumb = resize(image.copy(),
size=None,
max_width=self.get_sizes()['gallery'][0])
image_thumb.save(os.path.join(settings.MEDIA_ROOT, thumbnail))
self.thumbnail = thumbnail
# guarda la imagen para gallery
#image_gallery = image.copy()
image_gallery = resize(image.copy(),
size=None,
max_width=self.get_sizes()['normal'][0])
image.save(os.path.join(settings.MEDIA_ROOT, gallery))
self.gallery = gallery
# borra la original porque es un PDF
try:
os.remove(fileout)
except (OSError, ValueError):
pass
super(MediaContent, self).save(*args, **kwargs)
def save(self, *args, **kwargs):
changed_image = self.content != self.__original_image
if not self.id and not self.pub_date:
self.pub_date = datetime.datetime.today()
crop_original = kwargs.get('crop_original', False)
super(MediaContent, self).save(*args, **kwargs)
self.mimetype = mimetypes.guess_type(self.content.path)[0]
if self.mimetype:
content_type = self.mimetype.replace('/', '_')
else:
# assume everything else is text/plain
content_type = 'text_plain'
i = self.content.name.rindex('/')
thumbnail = u'%sthumbnail_%s' % (unicode(self.content.name[:i+1]), unicode(self.content.name[i+1:]))
gallery = u'%sgallery_%s' % (unicode(self.content.name[:i+1]), unicode(self.content.name[i+1:]))
orig = self.content.name
if (not self.thumbnail or not self.gallery or changed_image) and content_type.split('_')[0]=='image':
img_path = self.content.path
if content_type == 'image_svg+xml':
try:
from nebula.mediacontent import svg_to_png
svg_to_png.convert(img_path, svg_to_png.new_name(img_path))
img_path = svg_to_png.new_name(img_path)
self.content.name = self.content.name[:-3] + self.content.name[-3:].replace('svg', 'png')
except:
pass
image = Image.open(img_path)
image = convert_to_rgb(image)
image = crop_aspect(image, ratio=1.0)
# hace el thumb
image_thumb = resize(image.copy(), size=self.get_sizes()['thumb'])
image_thumb.save(os.path.join(settings.MEDIA_ROOT, thumbnail))
self.thumbnail = thumbnail
# guarda la imagen para gallery
image_gallery = resize(image.copy(), size=self.get_sizes()['gallery'])
image_gallery.save(os.path.join(settings.MEDIA_ROOT, gallery))
self.gallery = gallery
# guarda la imagen al tamaño máximo
if crop_original:
image_normal = resize(image.copy(), size=self.get_sizes()['normal'])
image_normal.save(os.path.join(settings.MEDIA_ROOT, orig))
elif (not self.thumbnail or not self.gallery or changed_image) and content_type == 'application_pdf':
# Crea una imagen de la primer pagina de un PDF
from subprocess import call
cmd = "gs -q -dQUIET -dPARANOIDSAFER -dBATCH -dNOPAUSE -dNOPROMPT \
-dMaxBitmap=500000000 -dLastPage=1 -dAlignToPixels=0 -dGridFitTT=0 \
-sDEVICE=jpeg -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -r150 \
-sOutputFile=%(fileout)s %(filein)s"
filein = os.path.join(settings.MEDIA_ROOT, self.content.name)
filejpg = self.content.name[:-3] + self.content.name[-3:].replace('pdf', 'jpg')
fileout = os.path.join(settings.MEDIA_ROOT, filejpg)
if not os.access(filein, os.R_OK):
raise 'not access %s' % filein
files = {
'filein': filein.replace(' ', '\ '),
'fileout': fileout.replace(' ', '\ '),
}
# devuelve 0 si esta OK
if not call(cmd % files, shell=True):
i = filejpg.rindex('/')
thumbnail = u'%sthumbnail_%s' % (unicode(filejpg[:i+1]), unicode(filejpg[i+1:]))
gallery = u'%sgallery_%s' % (unicode(filejpg[:i+1]), unicode(filejpg[i+1:]))
image = Image.open(fileout)
image = convert_to_rgb(image)
#image = crop_aspect(image, ratio=1.0)
# hace el thumb
image_thumb = resize(image.copy(), size=None, max_width=self.get_sizes()['gallery'][0])
image_thumb.save(os.path.join(settings.MEDIA_ROOT, thumbnail))
self.thumbnail = thumbnail
# guarda la imagen para gallery
#image_gallery = image.copy()
image_gallery = resize(image.copy(), size=None, max_width=self.get_sizes()['normal'][0])
image.save(os.path.join(settings.MEDIA_ROOT, gallery))
self.gallery = gallery
# borra la original porque es un PDF
try:
os.remove(fileout)
except (OSError, ValueError):
pass
super(MediaContent, self).save(*args, **kwargs)