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#!/usr/bin/env python3
# coding=utf-8
#
# Copyright (C) 2005 Aaron Spike, aaron@ekips.org
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
import math
import inkex
from inkex import TextElement, Circle
from inkex.localization import inkex_gettext as _
class NumberNodes(inkex.EffectExtension):
"""Replace the selection's nodes with numbered dots according to the options"""
def add_arguments(self, pars):
pars.add_argument(
"--dotsize", default="10px", help="Size of the dots on the path nodes"
)
pars.add_argument("--fontsize", default="20px", help="Size of node labels")
pars.add_argument(
"--start", type=int, default=1, help="First number in the sequence"
)
pars.add_argument(
"--step", type=int, default=1, help="Numbering step between two nodes"
)
pars.add_argument("--tab", help="The selected UI-tab when OK was pressed")
def effect(self):
filtered = self.svg.selection.filter(inkex.PathElement)
if not filtered:
raise inkex.AbortExtension(_("Please select at least one path object."))
for node in filtered:
self.add_dot(node)
def add_dot(self, node: inkex.PathElement):
"""Add a dot label for this path element"""
group: inkex.Group = node.getparent().add(inkex.Group())
dot_group = group.add(inkex.Group())
num_group = group.add(inkex.Group())
path_trans_applied = node.path.transform(node.composed_transform())
group.transform = -node.getparent().composed_transform()
style = inkex.Style({"stroke": "none", "fill": "#000"})
for step, (x, y) in enumerate(path_trans_applied.end_points):
circle = dot_group.add(
Circle(
cx=str(x),
cy=str(y),
r=str(self.svg.unittouu(self.options.dotsize) / 2),
)
)
circle.style = style
num_group.append(
self.add_text(
x + (self.svg.unittouu(self.options.dotsize) / 2),
y - (self.svg.unittouu(self.options.dotsize) / 2),
self.options.start + (self.options.step * step),
)
)
node.delete()
def add_text(self, x, y, text):
"""Add a text label at the given location"""
elem = TextElement(x=str(x), y=str(y))
elem.text = str(text)
elem.style = {
"font-size": self.svg.unittouu(self.options.fontsize),
"fill-opacity": "1.0",
"stroke": "none",
"font-weight": "normal",
"font-style": "normal",
"fill": "#999",
}
return elem
if __name__ == "__main__":
NumberNodes().run()
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