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#!/usr/bin/env python
# -*- coding: utf-8 -*-
from secretary import Renderer
from datetime import datetime
import locale
from PIL import Image
import re
from django.conf import settings
RE_UNITS = re.compile("([.0-9]+)([a-z]+)")
def parse_value_unit(value):
m = RE_UNITS.match(value)
if not m:
return None, None
value, unit = m.groups()
value = float(value)
return value, unit
def human_date_filter(value):
try:
value = datetime.strptime(value, "%Y-%m-%d")
except ValueError:
return ""
language_code = settings.LANGUAGE_CODE.split('-')
language_code = language_code[0] + "_" + language_code[1].upper()
for language_suffix in (".utf8", ""):
try:
locale.setlocale(locale.LC_TIME, language_code + language_suffix)
break
except locale.Error:
pass
return value.strftime(settings.DATE_FORMAT)
class IshtarSecretaryRenderer(Renderer):
def __init__(self, *args, **kwargs):
super(IshtarSecretaryRenderer, self).__init__(*args, **kwargs)
self.media_callback = self.ishtar_media_loader
self.environment.filters['human_date'] = human_date_filter
def ishtar_media_loader(self, media, *args, **kwargs):
image_file, mime = self.fs_loader(media, *args, **kwargs)
if "width" in kwargs:
kwargs['frame_attrs']['svg:width'] = kwargs["width"]
if "height" in kwargs:
kwargs['frame_attrs']['svg:height'] = kwargs["height"]
if "keep_ratio" in args:
image = Image.open(image_file.name)
width, width_unit = parse_value_unit(
kwargs['frame_attrs']['svg:width'])
height, height_unit = parse_value_unit(
kwargs['frame_attrs']['svg:height'])
if "height" not in kwargs and width:
new_height = width * image.height / image.width
kwargs['frame_attrs']['svg:height'] = "{}{}".format(
new_height, width_unit
)
if "width" not in kwargs and height:
new_width = height * image.width / image.height
kwargs['frame_attrs']['svg:width'] = "{}{}".format(
new_width, height_unit
)
return image_file, mime
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