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from django.utils.translation import ugettext_lazy as _
from django.db import models
from cms.models import CMSPlugin, Page
from cms.models.fields import PageField
from posixpath import join, basename, splitext, exists
from filer.fields.image import FilerImageField
from filer.fields.file import FilerFileField
from cms import settings as cms_settings
from django.conf import settings
from cmsplugin_filer_utils import FilerPluginManager
class FilerImage(CMSPlugin):
LEFT = "left"
RIGHT = "right"
FLOAT_CHOICES = ((LEFT, _("left")),
(RIGHT, _("right")),
)
caption_text = models.CharField(_("caption text"), null=True, blank=True, max_length=255)
image = FilerImageField(null=True, blank=True, default=None, verbose_name=_("image"))
image_url = models.URLField(_("alternative image url"), verify_exists=False, null=True, blank=True, default=None)
alt_text = models.CharField(_("alt text"), null=True, blank=True, max_length=255)
thumbnail_option = models.ForeignKey('ThumbnailOption', null=True, blank=True, verbose_name=_("thumbnail option"))
use_autoscale = models.BooleanField(_("use automatic scaling"), default=False,
help_text=_('tries to auto scale the image based on the placeholder context'))
width = models.PositiveIntegerField(_("width"), null=True, blank=True)
height = models.PositiveIntegerField(_("height"), null=True, blank=True)
crop = models.BooleanField(_("crop"), default=True)
upscale = models.BooleanField(_("upscale"), default=True)
alignment = models.CharField(_("image alignment"), max_length=10, blank=True, null=True, choices=FLOAT_CHOICES)
free_link = models.CharField(_("link"), max_length=255, blank=True, null=True,
help_text=_("if present image will be clickable"))
page_link = PageField(null=True, blank=True,
help_text=_("if present image will be clickable"),
verbose_name=_("page link"))
file_link = FilerFileField(null=True, blank=True, default=None, verbose_name=_("file link"), help_text=_("if present image will be clickable"), related_name='+')
original_link = models.BooleanField(_("link original image"), default=False, help_text=_("if present image will be clickable"))
description = models.TextField(_("description"), blank=True, null=True)
# we only add the image to select_related. page_link and file_link are FKs
# as well, but they are not used often enough to warrant the impact of two
# additional LEFT OUTER JOINs.
objects = FilerPluginManager(select_related=('image',))
class Meta:
verbose_name = _("filer image")
verbose_name_plural = _("filer images")
def clean(self):
from django.core.exceptions import ValidationError
# Make sure that either image or image_url is set
if (not self.image and not self.image_url) or (self.image and self.image_url):
raise ValidationError(_('Either an image or an image url must be selected.'))
def __unicode__(self):
if self.image:
return self.image.label
else:
return unicode( _("Image Publication %(caption)s") % {'caption': self.caption or self.alt} )
return ''
@property
def caption(self):
if self.image:
return self.caption_text or self.image.default_caption
else:
return self.caption_text
@property
def alt(self):
if self.image:
return self.alt_text or self.image.default_alt_text or self.image.label
else:
return self.alt_text
@property
def link(self):
if self.free_link:
return self.free_link
elif self.page_link:
return self.page_link.get_absolute_url()
elif self.file_link:
return self.file_link.url
elif self.original_link:
if self.image:
return self.image.url
else:
return self.image_url
else:
return ''
class ThumbnailOption(models.Model):
"""
This class defines the option use to create the thumbnail.
"""
name = models.CharField(_("name"), max_length=100)
width = models.IntegerField(_("width"), help_text=_('width in pixel.'))
height = models.IntegerField(_("height"), help_text=_('height in pixel.'))
crop = models.BooleanField(_("crop"), default=True)
upscale = models.BooleanField(_("upscale"), default=True)
class Meta:
ordering = ('width', 'height')
verbose_name = _("thumbnail option")
verbose_name_plural = _("thumbnail options")
def __unicode__(self):
return u'%s -- %s x %s' %(self.name, self.width, self.height)
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