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# Authors: see git history
#
# Copyright (c) 2021 Authors
# Licensed under the GNU GPL version 3.0 or later. See the file LICENSE for details.
import inkex
from lxml import etree
from ..i18n import _
from ..svg.tags import SVG_PATH_TAG, SVG_POLYLINE_TAG, SVG_DEFS_TAG
from .base import InkstitchExtension
class SelectionToGuideLine(InkstitchExtension):
def effect(self):
if not self.get_elements():
return
if not self.svg.selected:
inkex.errormsg(
_("Please select one object to be marked as a guide line."))
return
if len(self.get_nodes()) != 1:
inkex.errormsg(
_("Please select only one object to be marked as a guide line."))
return
for guide_line in self.get_nodes():
if guide_line.tag in (SVG_PATH_TAG, SVG_POLYLINE_TAG):
self.set_marker(guide_line)
def set_marker(self, node):
xpath = ".//marker[@id='inkstitch-guide-line-marker']"
guide_line_marker = self.document.xpath(xpath)
if not guide_line_marker:
# get or create def element
defs = self.document.find(SVG_DEFS_TAG)
if defs is None:
defs = etree.SubElement(self.document, SVG_DEFS_TAG)
# insert marker
marker = """<marker
refX="10"
refY="5"
orient="auto"
id="inkstitch-guide-line-marker">
<g
id="inkstitch-guide-line-group">
<path
style="fill:#fafafa;stroke:#ff00ff;stroke-width:0.5;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:1, 1;stroke-dashoffset:0;stroke-opacity:1;fill-opacity:0.8;"
d="M 10.12911,5.2916678 A 4.8374424,4.8374426 0 0 1 5.2916656,10.12911 4.8374424,4.8374426 0 0 1 0.45422399,5.2916678 4.8374424,4.8374426 0 0 1 5.2916656,0.45422399 4.8374424,4.8374426 0 0 1 10.12911,5.2916678 Z"
id="inkstitch-guide-line-marker-circle" />
<path
style="fill:none;stroke:#ff00ff;stroke-width:0.4;stroke-linecap:round;stroke-miterlimit:4;"
id="inkstitch-guide-line-marker-spiral"
d="M 4.9673651,5.7245662 C 4.7549848,5.7646159 4.6247356,5.522384 4.6430021,5.3419847 4.6765851,5.0103151 5.036231,4.835347 5.3381858,4.8987426 5.7863901,4.9928495 6.0126802,5.4853625 5.9002872,5.9065088 5.7495249,6.4714237 5.1195537,6.7504036 4.5799191,6.5874894 3.898118,6.3816539 3.5659013,5.6122905 3.7800789,4.9545192 4.0402258,4.1556558 4.9498996,3.7699484 5.7256318,4.035839 6.6416744,4.3498087 7.0810483,5.4003986 6.7631909,6.2939744 6.395633,7.3272552 5.2038143,7.8204128 4.1924535,7.4503931 3.0418762,7.0294421 2.4948761,5.6961604 2.9171752,4.567073 3.3914021,3.2991406 4.8663228,2.6982592 6.1130974,3.1729158 7.4983851,3.7003207 8.1531869,5.3169977 7.6260947,6.6814205 7.0456093,8.1841025 5.2870784,8.8928844 3.8050073,8.3132966 2.1849115,7.6797506 1.4221671,5.7793073 2.0542715,4.1796074 2.7408201,2.4420977 4.7832541,1.6253548 6.5005435,2.310012 8.3554869,3.0495434 9.2262638,5.2339874 8.4890181,7.0688861 8.4256397,7.2266036 8.3515789,7.379984 8.2675333,7.5277183" />
</g>
</marker>""" # noqa: E501
defs.append(etree.fromstring(marker))
# attach marker to node
style = node.get('style') or ''
style = style.split(";")
style = [i for i in style if not i.startswith('marker-start')]
style.append('marker-start:url(#inkstitch-guide-line-marker)')
node.set('style', ";".join(style))
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