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from __future__ import unicode_literals
from django.utils.translation import ugettext_lazy as _
from django.db import models
from cms.models import CMSPlugin
from cms.models.fields import PageField
from filer.fields.image import FilerImageField
from filer.fields.file import FilerFileField
from filer.utils.compatibility import python_2_unicode_compatible
from cmsplugin_filer_utils import FilerPluginManager
from .conf import settings
@python_2_unicode_compatible
class FilerImage(CMSPlugin):
LEFT = "left"
RIGHT = "right"
FLOAT_CHOICES = ((LEFT, _("left")),
(RIGHT, _("right")),
)
STYLE_CHOICES = settings.CMSPLUGIN_FILER_IMAGE_STYLE_CHOICES
DEFAULT_STYLE = settings.CMSPLUGIN_FILER_IMAGE_DEFAULT_STYLE
style = models.CharField(
_('Style'), choices=STYLE_CHOICES, default=DEFAULT_STYLE, max_length=50, blank=True)
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"), null=True, blank=True, default=None)
alt_text = models.CharField(_("alt text"), null=True, blank=True, max_length=255)
use_original_image = models.BooleanField(_("use the original image"), default=False,
help_text=_('do not resize the image. use the original image instead.'))
thumbnail_option = models.ForeignKey('ThumbnailOption', null=True, blank=True, verbose_name=_("thumbnail option"),
help_text=_('overrides width, height, crop and upscale with values from the selected 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)
target_blank = models.BooleanField(_('Open link in new window'), default=False)
# 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 __str__(self):
if self.image:
return self.image.label
else:
return _("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 ''
@python_2_unicode_compatible
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 __str__(self):
return '%s -- %s x %s' % (self.name, self.width, self.height)
@property
def as_dict(self):
"""
This property returns a dictionary suitable for Thumbnailer.get_thumbnail()
Sample code:
# thumboption_obj is a ThumbnailOption instance
# filerimage is a Image instance
option_dict = thumboption_obj.as_dict
thumbnailer = filerimage.easy_thumbnails_thumbnailer
thumb_image = thumbnailer.get_thumbnail(option_dict)
"""
return {"size":(self.width,self.height), "width":self.width,
"height":self.height,"crop":self.crop,"upscale":self.upscale}
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