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#!/usr/bin/env python
# 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
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):
if not self.svg.selected:
raise inkex.AbortExtension("Please select an object.")
for node in self.svg.selection.filter(inkex.PathElement).values():
self.add_dot(node)
def add_dot(self, node):
"""Add a dot label for this path element"""
group = node.getparent().add(inkex.Group())
dot_group = group.add(inkex.Group())
num_group = group.add(inkex.Group())
group.transform = node.transform
style = inkex.Style({'stroke': 'none', 'fill': '#000'})
for step, (x, y) in enumerate(node.path.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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