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#!/usr/bin/env python
# coding=utf-8
#
# Copyright (C) 2007 John Bintz, jcoswell@cosellproductions.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.
#
"""
Greate perfect bound cover
"""
import textwrap
import inkex
from inkex import Guide
def caliper_to_ppi(caliper):
return 2 / caliper
def bond_weight_to_ppi(bond_weight):
return caliper_to_ppi(bond_weight * 0.0002)
def points_to_ppi(points):
return caliper_to_ppi(points / 1000.0)
class PerfectBoundCover(inkex.EffectExtension):
def add_arguments(self, pars):
pars.add_argument("--width", type=float, default=6.0, help="cover width (in)")
pars.add_argument("--height", type=float, default=9.0, help="cover height (in)")
pars.add_argument("--pages", type=int, default=64, help="number of pages")
pars.add_argument(
"--paperthicknessmeasurement",
default="ppi",
help="""Measurement for determining the thickness of the spine.
Options: 'ppi': pages per inch; 'caliper': caliper (inches);
'points': caliper in points (1/1000 in);
'bond_weight': Bond (pounds);
'width': absolute width of spine (in)""",
)
pars.add_argument(
"--paperthickness", type=float, default=0.0, help="paper thickness"
)
pars.add_argument(
"--coverthicknessmeasurement",
default="ppi",
help="Measurement for determining the thickness of the cover. For "
"available options, see --paperthicknessmeasurement",
)
pars.add_argument(
"--coverthickness", type=float, default=0.0, help="cover thickness"
)
pars.add_argument("--bleed", type=float, default=0.25, help="cover bleed (in)")
pars.add_argument(
"--removeguides", type=inkex.Boolean, default=False, help="remove guide"
)
def effect(self):
switch = {
"ppi": lambda x: x,
"caliper": caliper_to_ppi,
"bond_weight": bond_weight_to_ppi,
"points": points_to_ppi,
"width": lambda x: x,
}
if self.options.paperthickness > 0:
if self.options.paperthicknessmeasurement == "width":
paper_spine = self.options.paperthickness
else:
paper_spine = self.options.pages / switch[
self.options.paperthicknessmeasurement
](self.options.paperthickness)
else:
paper_spine = 0
if self.options.coverthickness > 0:
if self.options.coverthicknessmeasurement == "width":
cover_spine = self.options.coverthickness
else:
cover_spine = 4.0 / switch[self.options.coverthicknessmeasurement](
self.options.coverthickness
)
else:
cover_spine = 0
spine_width = paper_spine + cover_spine
document_width = (self.options.bleed + self.options.width * 2) + spine_width
document_height = self.options.bleed * 2 + self.options.height
root = self.document.getroot()
root.set("width", "%sin" % document_width)
root.set("height", "%sin" % document_height)
guides = []
guides.append(["horizontal", self.options.bleed])
guides.append(["horizontal", document_height - self.options.bleed])
guides.append(["vertical", self.options.bleed])
guides.append(["vertical", document_width - self.options.bleed])
guides.append(["vertical", (document_width / 2) - (spine_width / 2)])
guides.append(["vertical", (document_width / 2) + (spine_width / 2)])
namedview = self.svg.namedview
if namedview is not None:
if self.options.removeguides:
for node in namedview.get_guides():
node.delete()
for guide in guides:
newguide = namedview.add(Guide())
newguide.set("orientation", guide[0])
newguide.set("position", "%f" % (guide[1] * 96))
if __name__ == "__main__":
PerfectBoundCover().run()
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