X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/0d0fa7a4cd45b477e40740a8d971ec814bc6a4a9..bf3f18ce9313f4929ff327fbf12803157de171cb:/apps/sponsors/models.py?ds=sidebyside diff --git a/apps/sponsors/models.py b/apps/sponsors/models.py index ffad8e774..0565b9744 100644 --- a/apps/sponsors/models.py +++ b/apps/sponsors/models.py @@ -1,13 +1,29 @@ +# -*- coding: utf-8 -*- +# This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later. +# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information. +# +import json +import time +from StringIO import StringIO from django.db import models from django.utils.translation import ugettext_lazy as _ +from django.template.loader import render_to_string +from PIL import Image + +from jsonfield import JSONField +from django.core.files.base import ContentFile +from ssify import flush_ssi_includes + +THUMB_WIDTH = 120 +THUMB_HEIGHT = 120 class Sponsor(models.Model): name = models.CharField(_('name'), max_length=120) _description = models.CharField(_('description'), blank=True, max_length=255) - logo = models.ImageField(_('logo'), upload_to='sponsors/sponsor/logo') - url = models.URLField(_('url'), blank=True, verify_exists=False) - + logo = models.ImageField(_('logo'), upload_to='sponsorzy/sponsor/logo') + url = models.URLField(_('url'), blank=True) + def __unicode__(self): return self.name @@ -18,18 +34,74 @@ class Sponsor(models.Model): return self.name -class SponsorGroup(models.Model): +class SponsorPage(models.Model): name = models.CharField(_('name'), max_length=120) - order = models.IntegerField(_('order'), default=0) - column_width = models.PositiveIntegerField(_('column width')) - sponsor_ids = models.CommaSeparatedIntegerField(_('sponsors'), max_length=255) - - def sponsors(self): - ids = [int(pk) for pk in self.sponsor_ids.split(',')] - result = Sponsor.objects.in_bulk(ids) - return [result[pk] for pk in ids] - sponsors.changes_data = False - + sponsors = JSONField(_('sponsors'), default={}) + _html = models.TextField(blank=True, editable=False) + sprite = models.ImageField(upload_to='sponsorzy/sprite', blank=True) + + def populated_sponsors(self): + result = [] + offset = 0 + for column in self.sponsors: + result_group = {'name': column['name'], 'sponsors': []} + sponsor_objects = Sponsor.objects.in_bulk(column['sponsors']) + for sponsor_pk in column['sponsors']: + try: + result_group['sponsors'].append((offset, sponsor_objects[sponsor_pk])) + offset -= THUMB_HEIGHT + except KeyError: + pass + result.append(result_group) + return result + + def render_sprite(self): + sponsor_ids = [] + for column in self.sponsors: + sponsor_ids.extend(column['sponsors']) + sponsors = Sponsor.objects.in_bulk(sponsor_ids) + sprite = Image.new('RGBA', (THUMB_WIDTH, len(sponsors) * THUMB_HEIGHT)) + for i, sponsor_id in enumerate(sponsor_ids): + simg = Image.open(sponsors[sponsor_id].logo.path) + if simg.size[0] > THUMB_WIDTH or simg.size[1] > THUMB_HEIGHT: + size = ( + min(THUMB_WIDTH, + simg.size[0] * THUMB_HEIGHT / simg.size[1]), + min(THUMB_HEIGHT, + simg.size[1] * THUMB_WIDTH / simg.size[0]) + ) + simg = simg.resize(size, Image.ANTIALIAS) + sprite.paste(simg, ( + (THUMB_WIDTH - simg.size[0]) / 2, + i * THUMB_HEIGHT + (THUMB_HEIGHT - simg.size[1]) / 2, + )) + imgstr = StringIO() + sprite.save(imgstr, 'png') + + if self.sprite: + self.sprite.delete(save=False) + self.sprite.save('sponsorzy/sprite/%s-%d.png' % (self.name, time.time()), ContentFile(imgstr.getvalue()), save=False) + + def html(self): + return self._html + html = property(fget=html) + + def save(self, *args, **kwargs): + if isinstance(self.sponsors, basestring): + # Walkaround for weird jsonfield 'no-decode' optimization. + self.sponsors = json.loads(self.sponsors) + self.render_sprite() + self._html = render_to_string('sponsors/page.html', { + 'sponsors': self.populated_sponsors(), + 'page': self + }) + ret = super(SponsorPage, self).save(*args, **kwargs) + self.flush_includes() + return ret + + def flush_includes(self): + flush_ssi_includes(['/sponsors/page/%s.html' % self.name]) + def __unicode__(self): return self.name