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# Copyright (c) 2018 Manfred Moitzi
# License: MIT License
# based on work of:
# Copyright (c) 2018 Antonio Ospite <ao2@ao2.it>
from svgwrite.data.types import SVGAttribute
INKSCAPE_NAMESPACE = 'http://www.inkscape.org/namespaces/inkscape'
SODIPODI_NAMESPACE = 'http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd'
INKSCAPE_ATTRIBUTES = {
'xmlns:inkscape': SVGAttribute('xmlns:inkscape',
anim=False,
types=[],
const=frozenset([INKSCAPE_NAMESPACE])),
'xmlns:sodipodi': SVGAttribute('xmlns:sodipodi',
anim=False,
types=[],
const=frozenset([SODIPODI_NAMESPACE])),
'inkscape:groupmode': SVGAttribute('inkscape:groupmode',
anim=False,
types=[],
const=frozenset(['layer'])),
'inkscape:label': SVGAttribute('inkscape:label',
anim=False,
types=frozenset(['string']),
const=[]),
'sodipodi:insensitive': SVGAttribute('sodipodi:insensitive',
anim=False,
types=[],
const=frozenset(['true', 'false', '0', '1']))
}
def _setup_validator(validator):
# setup already done?
if 'xmlns:inkscape' in validator.attributes:
return
validator.attributes.update(INKSCAPE_ATTRIBUTES)
elements = validator.elements
# extend SVG attributes
elements['svg'].valid_attributes = \
{
'xmlns:inkscape',
'xmlns:sodipodi',
} | elements['svg'].valid_attributes
# extend group attributes
elements['g'].valid_attributes = \
{
'inkscape:groupmode',
'inkscape:label',
'sodipodi:insensitive',
} | elements['g'].valid_attributes
GROUP_MODE = 'inkscape:groupmode'
LABEL = 'inkscape:label'
INSENSITIVE = 'sodipodi:insensitive'
class Inkscape(object):
"""
Extension to support SOME Inkscape features.
"""
def __init__(self, drawing):
self.svg = drawing
_setup_validator(drawing.validator)
drawing['xmlns:inkscape'] = INKSCAPE_NAMESPACE
drawing['xmlns:sodipodi'] = SODIPODI_NAMESPACE
def layer(self, label=None, locked=False, **kwargs):
"""
Create new Inkscape layer.
Args:
label: layer name as string
locked: when set to True, make objects at this layer unselectable
"""
new_layer = self.svg.g(**kwargs)
new_layer[GROUP_MODE] = 'layer'
if label is not None:
new_layer[LABEL] = label
if locked:
new_layer[INSENSITIVE] = 1
return new_layer