from uuid import uuid4
from django.conf import settings
from django.template.loader import render_to_string
from django.utils.translation import ugettext_lazy as _
from nonefield.fields import NoneField
from fobi.base import FormElementPlugin, form_element_plugin_registry
from fobi.helpers import delete_file, clone_file
from . import UID
from .forms import ContentImageForm
from .helpers import get_crop_filter
from .settings import (
FIT_METHOD_FIT_WIDTH, FIT_METHOD_FIT_HEIGHT, IMAGES_UPLOAD_DIR
)
__title__ = 'fobi.contrib.plugins.form_elements.content.content_image.' \
'fobi_form_elements'
__author__ = 'Artur Barseghyan <artur.barseghyan@gmail.com>'
__copyright__ = '2014-2016 Artur Barseghyan'
__license__ = 'GPL 2.0/LGPL 2.1'
__all__ = ('ContentImagePlugin',)
[docs]class ContentImagePlugin(FormElementPlugin):
"""Content image plugin."""
uid = UID
name = _("Content image")
group = _("Content")
form = ContentImageForm
[docs] def post_processor(self):
"""Post process data.
Always the same.
"""
self.data.name = "{0}_{1}".format(self.uid, uuid4())
[docs] def delete_plugin_data(self):
"""Delete uploaded file."""
delete_file(self.data.file)
[docs] def clone_plugin_data(self, entry):
"""Clone plugin data.
Clone plugin data, which means we make a copy of the original image.
TODO: Perhaps rely more on data of ``form_element_entry``?
"""
cloned_image = clone_file(
IMAGES_UPLOAD_DIR, self.data.file, relative_path=True
)
return self.get_cloned_plugin_data(update={'file': cloned_image})
[docs] def get_form_field_instances(self, request=None):
"""Get form field instances."""
width, height = self.data.size.split('x')
crop = get_crop_filter(self.data.fit_method)
if FIT_METHOD_FIT_WIDTH == self.data.fit_method:
thumb_size = (width, 0)
elif FIT_METHOD_FIT_HEIGHT == self.data.fit_method:
thumb_size = (0, height)
else:
thumb_size = (width, height)
context = {
'plugin': self,
'MEDIA_URL': settings.MEDIA_URL,
'crop': crop,
'thumb_size': thumb_size
}
rendered_image = render_to_string('content_image/render.html', context)
kwargs = {
'initial': rendered_image,
'required': False,
'label': '',
}
form_field_instances = []
form_field_instances.append((self.data.name, NoneField, kwargs))
return form_field_instances
form_element_plugin_registry.register(ContentImagePlugin)