/usr/lib/python3/dist-packages/svgwrite/base.py is in python3-svgwrite 1.1.8-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 | #!/usr/bin/env python
#coding:utf-8
# Author: mozman
# Purpose: svg base element
# Created: 08.09.2010
# Copyright (C) 2010, Manfred Moitzi
# License: MIT License
"""
The **BaseElement** is the root for all SVG elements.
"""
from svgwrite.etree import etree
import copy
from svgwrite.params import Parameter
from svgwrite.utils import AutoID, to_unicode, PYTHON3
class BaseElement(object):
"""
The **BaseElement** is the root for all SVG elements. The SVG attributes
are stored in **attribs**, and the SVG subelements are stored in
**elements**.
"""
elementname = 'baseElement'
def __init__(self, **extra):
"""
:param extra: extra SVG attributes (keyword arguments)
* add trailing '_' to reserved keywords: ``'class_'``, ``'from_'``
* replace inner '-' by '_': ``'stroke_width'``
SVG attribute names will be checked, if **debug** is `True`.
workaround for removed **attribs** parameter in Version 0.2.2::
# replace
element = BaseElement(attribs=adict)
#by
element = BaseElement()
element.update(adict)
"""
# the keyword 'factory' specifies the object creator
factory = extra.pop('factory', None)
if factory is not None:
# take parameter from 'factory'
self._parameter = factory._parameter
else:
# default parameter debug=True profile='full'
self._parameter = Parameter()
# override debug setting
debug = extra.pop('debug', None)
if debug is not None:
self._parameter.debug = debug
# override profile setting
profile = extra.pop('profile', None)
if profile is not None:
self._parameter.profile = profile
self.attribs = dict()
self.update(extra)
self.elements = list()
def update(self, attribs):
""" Update SVG Attributes from `dict` attribs.
Rules for keys:
1. trailing '_' will be removed (``'class_'`` -> ``'class'``)
2. inner '_' will be replaced by '-' (``'stroke_width'`` -> ``'stroke-width'``)
"""
for key, value in attribs.items():
# remove trailing underscores
# and replace inner underscores
key = key.rstrip('_').replace('_', '-')
self.__setitem__(key, value)
def copy(self):
newobj = copy.copy(self) # shallow copy of object
newobj.attribs = copy.copy(self.attribs) # shallow copy of attributes
newobj.elements = copy.copy(self.elements) # shallow copy of subelements
if 'id' in newobj.attribs: # create a new 'id'
newobj['id'] = newobj.next_id()
return newobj
@property
def debug(self):
return self._parameter.debug
@property
def profile(self):
return self._parameter.profile
@property
def validator(self):
return self._parameter.validator
@property
def version(self):
return self._parameter.get_version()
def set_parameter(self, parameter):
self._parameter = parameter
def next_id(self, value=None):
return AutoID.next_id(value)
def get_id(self):
""" Get the object `id` string, if the object does not have an `id`,
a new `id` will be created.
:returns: `string`
"""
if 'id' not in self.attribs:
self.attribs['id'] = self.next_id()
return self.attribs['id']
def get_iri(self):
"""
Get the `IRI` reference string of the object. (i.e., ``'#id'``).
:returns: `string`
"""
return "#%s" % self.get_id()
def get_funciri(self):
"""
Get the `FuncIRI` reference string of the object. (i.e. ``'url(#id)'``).
:returns: `string`
"""
return "url(%s)" % self.get_iri()
def __getitem__(self, key):
""" Get SVG attribute by `key`.
:param string key: SVG attribute name
:return: SVG attribute value
"""
return self.attribs[key]
def __setitem__(self, key, value):
""" Set SVG attribute by `key` to `value`.
:param string key: SVG attribute name
:param object value: SVG attribute value
"""
# Attribute checking is only done by using the __setitem__() method or
# by self['attribute'] = value
if self.debug:
self.validator.check_svg_attribute_value(self.elementname, key, value)
self.attribs[key] = value
def add(self, element):
""" Add an SVG element as subelement.
:param element: append this SVG element
:returns: the added element
"""
if self.debug:
self.validator.check_valid_children(self.elementname, element.elementname)
self.elements.append(element)
return element
def tostring(self):
""" Get the XML representation as unicode `string`.
:return: unicode XML string of this object and all its subelements
"""
xml = self.get_xml()
xml_utf8_str = etree.tostring(xml, encoding='utf-8')
return xml_utf8_str.decode('utf-8')
def get_xml(self):
""" Get the XML representation as `ElementTree` object.
:return: XML `ElementTree` of this object and all its subelements
"""
xml = etree.Element(self.elementname)
if self.debug:
self.validator.check_all_svg_attribute_values(self.elementname, self.attribs)
for attribute, value in self.attribs.items():
# filter 'None' values
if value is not None:
value = self.value_to_string(value)
if value: # just add not empty attributes
xml.set(attribute, value)
for element in self.elements:
xml.append(element.get_xml())
return xml
def value_to_string(self, value):
"""
Converts *value* into a <string> includes a value check, depending
on :attr:`self.debug` and :attr:`self.profile`.
"""
if isinstance(value, (int, float)):
if self.debug:
self.validator.check_svg_type(value, 'number')
if isinstance(value, float) and self.profile == 'tiny':
value = round(value, 4)
return to_unicode(value)
def set_desc(self, title=None, desc=None):
""" Insert a **title** and/or a **desc** element as first subelement.
"""
if desc is not None:
self.elements.insert(0, Desc(desc))
if title is not None:
self.elements.insert(0, Title(title))
def set_metadata(self, xmldata):
"""
:param xmldata: an xml.etree.ElementTree - Element() object.
"""
metadata = Metadata(xmldata)
if len(self.elements) == 0:
self.elements.append(metadata)
else:
pos = 0
while self.elements[pos].elementname in ('title', 'desc'):
pos += 1
if pos == len(self.elements):
self.elements.append(metadata)
return
self.elements.insert(pos, metadata)
class Title(object):
elementname = 'title'
def __init__(self, text):
self.xml = etree.Element(self.elementname)
self.xml.text = to_unicode(text)
def get_xml(self):
return self.xml
class Desc(Title):
elementname = 'desc'
class Metadata(Title):
elementname = 'metadata'
def __init__(self, xmldata):
"""
:param xmldata: an xml.etree.ElementTree - Element() object.
"""
self.xml = etree.Element('metadata')
self.xml.append(xmldata)
|