pandora/pandora/sequence/models.py

60 lines
1.7 KiB
Python

# -*- coding: utf-8 -*-
# vi:si:et:sw=4:sts=4:ts=4
from __future__ import division, print_function, absolute_import
from django.db import models
from django.utils.encoding import python_2_unicode_compatible
from item.models import ItemSort
from . import managers
def parse_hash(value):
return int(value, 16) - 9223372036854775808
def format_hash(value):
return hex(value + 9223372036854775808)[2:-1].upper()
@python_2_unicode_compatible
class Sequence(models.Model):
class Meta:
unique_together = ("sort", "start", "end", "mode")
MODE = {
'shape': 0,
'color': 1
}
mode = models.IntegerField(choices=sorted(zip(MODE.values(), list(MODE)), key=lambda k: k[0]), default=0)
sort = models.ForeignKey(ItemSort, null=True, related_name='sequences')
hash = models.BigIntegerField(db_index=True, default=-9223372036854775808)
start = models.FloatField(default=-1)
end = models.FloatField(default=-1)
duration = models.FloatField(default=0)
objects = managers.SequenceManager()
def save(self, *args, **kwargs):
self.duration = self.end - self.start
super(Sequence, self).save(*args, **kwargs)
@property
def public_id(self):
return u"%s/%0.03f-%0.03f" % (self.sort.item.public_id, float(self.start), float(self.end))
def __str__(self):
return self.public_id
def json(self, keys=None, user=None):
j = {
'id': self.public_id,
'hash': format_hash(self.hash),
'in': float('%0.03f' % self.start),
'out': float('%0.03f' % self.end),
}
if keys:
for key in keys:
if key not in j:
j[key] = self.sort.item.json.get(key)
return j