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faksimile_image.py
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Sun, May 12, 15:55

faksimile_image.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
""" This class can be used to represent faksimile images.
"""
# Copyright (C) University of Basel 2019 {{{1
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/> 1}}}
__author__ = "Christian Steiner"
__maintainer__ = __author__
__copyright__ = 'University of Basel'
__email__ = "christian.steiner@unibas.ch"
__status__ = "Development"
__license__ = "GPL v3"
__version__ = "0.0.1"
from lxml import etree as ET
from os.path import isfile
from .image import Image
class FaksimileImage(Image):
"""
This class represents a faksimile image.
Args:
file_name (str): name of the image file.
node (lxml.etree.Element) node, containing information
URL (str): URL of image file.
height (float): height of image
width (float): width of image
x (float): x
y (float): y
"""
XML_TAG = 'faksimile-image'
NIETZSCHE_SOURCES_URL = 'http://www.nietzschesource.org/DFGAapi/api/page/download/'
class_dictionary = {}
def __init__(self, node=None, file_name=None, URL=None, height=0.0, width=0.0, x=0.0, y=0.0):
super(FaksimileImage, self).__init__(node=node, file_name=file_name, URL=URL,\
height=height, width=width, tag=self.XML_TAG)
self.x = x
self.y = y
self.create_semantic_dictionary(FaksimileImage.class_dictionary)
@staticmethod
def CREATE_IMAGE(image_node):
"""Instantiates a FaksimileImage from a (lxml.etree.Element) image_node.
"""
namespaces = image_node.nsmap
if len(namespaces) == 0:
namespaces = { 'xlink': '' }
file_name = image_node.get('{%s}href' % namespaces['xlink'])
URL = FaksimileImage.NIETZSCHE_SOURCES_URL + file_name.replace('.jpg','')
height = float(image_node.get('height')) if bool(image_node.get('height')) else 0.0
width = float(image_node.get('width')) if bool(image_node.get('width')) else 0.0
x = float(image_node.get('x')) if bool(image_node.get('x')) else 0.0
y = float(image_node.get('y')) if bool(image_node.get('y')) else 0.0
return FaksimileImage(file_name=file_name, URL=URL, height=height, width=width, x=x, y=y)

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