forked from ungleich-public/dynamicweb
147 lines
5.4 KiB
Python
147 lines
5.4 KiB
Python
# -*- coding: utf-8 -*-
|
|
from __future__ import unicode_literals
|
|
|
|
from django.template.loader import select_template
|
|
from django.templatetags.static import static
|
|
from django.utils.translation import gettext_lazy as _
|
|
|
|
from cms.plugin_base import CMSPluginBase
|
|
from cms.plugin_pool import plugin_pool
|
|
|
|
from .forms import FilerImageForm
|
|
from .models import FilerImage
|
|
from .conf import settings
|
|
|
|
|
|
class FilerImagePlugin(CMSPluginBase):
|
|
admin_preview = False
|
|
form = FilerImageForm
|
|
model = FilerImage
|
|
module = 'Filer'
|
|
name = _("Image")
|
|
raw_id_fields = ('image', 'page_link')
|
|
text_enabled = True
|
|
|
|
TEMPLATE_NAME = 'cmsplugin_filer_image/plugins/image/%s.html'
|
|
render_template = TEMPLATE_NAME % 'default'
|
|
|
|
fieldsets = (
|
|
(None, {
|
|
'fields': [
|
|
'caption_text',
|
|
'image',
|
|
'image_url',
|
|
'alt_text',
|
|
]
|
|
}),
|
|
(_('Image resizing options'), {
|
|
'fields': (
|
|
'use_original_image',
|
|
('width', 'height',),
|
|
('crop', 'upscale',),
|
|
'thumbnail_option',
|
|
'use_autoscale',
|
|
)
|
|
}),
|
|
(None, {
|
|
'fields': ('alignment',)
|
|
}),
|
|
(_('More'), {
|
|
'classes': ('collapse',),
|
|
'fields': (
|
|
'free_link',
|
|
'page_link',
|
|
'file_link',
|
|
('original_link', 'target_blank',),
|
|
'link_attributes',
|
|
'description',
|
|
),
|
|
}),
|
|
)
|
|
if settings.CMSPLUGIN_FILER_IMAGE_STYLE_CHOICES:
|
|
fieldsets[0][1]['fields'].append('style')
|
|
|
|
def _get_thumbnail_options(self, context, instance):
|
|
"""
|
|
Return the size and options of the thumbnail that should be inserted
|
|
"""
|
|
width, height = None, None
|
|
crop, upscale = False, False
|
|
subject_location = False
|
|
placeholder_width = context.get('width', None)
|
|
placeholder_height = context.get('height', None)
|
|
if instance.thumbnail_option:
|
|
# thumbnail option overrides everything else
|
|
if instance.thumbnail_option.width:
|
|
width = instance.thumbnail_option.width
|
|
if instance.thumbnail_option.height:
|
|
height = instance.thumbnail_option.height
|
|
crop = instance.thumbnail_option.crop
|
|
upscale = instance.thumbnail_option.upscale
|
|
else:
|
|
if instance.use_autoscale and placeholder_width:
|
|
# use the placeholder width as a hint for sizing
|
|
width = int(placeholder_width)
|
|
elif instance.width:
|
|
width = instance.width
|
|
if instance.use_autoscale and placeholder_height:
|
|
height = int(placeholder_height)
|
|
elif instance.height:
|
|
height = instance.height
|
|
crop = instance.crop
|
|
upscale = instance.upscale
|
|
if instance.image:
|
|
if instance.image.subject_location:
|
|
subject_location = instance.image.subject_location
|
|
if not height and width:
|
|
# height was not externally defined: use ratio to scale it by the width
|
|
height = int(float(width) * float(instance.image.height) / float(instance.image.width))
|
|
if not width and height:
|
|
# width was not externally defined: use ratio to scale it by the height
|
|
width = int(float(height) * float(instance.image.width) / float(instance.image.height))
|
|
if not width:
|
|
# width is still not defined. fallback the actual image width
|
|
width = instance.image.width
|
|
if not height:
|
|
# height is still not defined. fallback the actual image height
|
|
height = instance.image.height
|
|
return {'size': (width, height),
|
|
'crop': crop,
|
|
'upscale': upscale,
|
|
'subject_location': subject_location}
|
|
|
|
def get_thumbnail(self, context, instance):
|
|
if instance.image:
|
|
return instance.image.file.get_thumbnail(self._get_thumbnail_options(context, instance))
|
|
|
|
def render(self, context, instance, placeholder):
|
|
options = self._get_thumbnail_options(context, instance)
|
|
context.update({
|
|
'instance': instance,
|
|
'link': instance.link,
|
|
'opts': options,
|
|
'size': options.get('size', None),
|
|
'placeholder': placeholder
|
|
})
|
|
return context
|
|
|
|
def get_render_template(self, context, instance, placeholder):
|
|
template = select_template((
|
|
'cmsplugin_filer_image/plugins/image.html', # backwards compatibility. deprecated!
|
|
self.TEMPLATE_NAME % instance.style,
|
|
self.TEMPLATE_NAME % 'default',
|
|
))
|
|
return template
|
|
|
|
def icon_src(self, instance):
|
|
if instance.image:
|
|
if getattr(settings, 'FILER_IMAGE_USE_ICON', False) and '32' in instance.image.icons:
|
|
return instance.image.icons['32']
|
|
else:
|
|
# Fake the context with a reasonable width value because it is not
|
|
# available at this stage
|
|
thumbnail = self.get_thumbnail({'width': 200}, instance)
|
|
return thumbnail.url
|
|
else:
|
|
return static("filer/icons/missingfile_%sx%s.png" % (32, 32,))
|
|
plugin_pool.register_plugin(FilerImagePlugin)
|