133 lines
4.8 KiB
Python
Executable file
133 lines
4.8 KiB
Python
Executable file
#!/usr/bin/env python3
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# coding=utf-8
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#
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# Copyright (C) 2007 John Bintz, jcoswell@cosellproductions.org
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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"""
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Greate perfect bound cover
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"""
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import textwrap
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import inkex
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from inkex import Guide
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def caliper_to_ppi(caliper):
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return 2 / caliper
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def bond_weight_to_ppi(bond_weight):
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return caliper_to_ppi(bond_weight * 0.0002)
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def points_to_ppi(points):
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return caliper_to_ppi(points / 1000.0)
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class PerfectBoundCover(inkex.EffectExtension):
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def add_arguments(self, pars):
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pars.add_argument("--width", type=float, default=6.0, help="cover width (in)")
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pars.add_argument("--height", type=float, default=9.0, help="cover height (in)")
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pars.add_argument("--pages", type=int, default=64, help="number of pages")
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pars.add_argument(
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"--paperthicknessmeasurement",
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default="ppi",
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help="""Measurement for determining the thickness of the spine.
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Options: 'ppi': pages per inch; 'caliper': caliper (inches);
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'points': caliper in points (1/1000 in);
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'bond_weight': Bond (pounds);
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'width': absolute width of spine (in)""",
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)
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pars.add_argument(
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"--paperthickness", type=float, default=0.0, help="paper thickness"
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)
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pars.add_argument(
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"--coverthicknessmeasurement",
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default="ppi",
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help="Measurement for determining the thickness of the cover. For "
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"available options, see --paperthicknessmeasurement",
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)
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pars.add_argument(
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"--coverthickness", type=float, default=0.0, help="cover thickness"
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)
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pars.add_argument("--bleed", type=float, default=0.25, help="cover bleed (in)")
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pars.add_argument(
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"--removeguides", type=inkex.Boolean, default=False, help="remove guide"
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)
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def effect(self):
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switch = {
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"ppi": lambda x: x,
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"caliper": caliper_to_ppi,
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"bond_weight": bond_weight_to_ppi,
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"points": points_to_ppi,
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"width": lambda x: x,
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}
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if self.options.paperthickness > 0:
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if self.options.paperthicknessmeasurement == "width":
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paper_spine = self.options.paperthickness
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else:
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paper_spine = self.options.pages / switch[
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self.options.paperthicknessmeasurement
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](self.options.paperthickness)
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else:
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paper_spine = 0
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if self.options.coverthickness > 0:
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if self.options.coverthicknessmeasurement == "width":
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cover_spine = self.options.coverthickness
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else:
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cover_spine = 4.0 / switch[self.options.coverthicknessmeasurement](
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self.options.coverthickness
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)
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else:
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cover_spine = 0
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spine_width = paper_spine + cover_spine
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document_width = (self.options.bleed + self.options.width * 2) + spine_width
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document_height = self.options.bleed * 2 + self.options.height
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root = self.document.getroot()
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root.set("width", "%sin" % document_width)
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root.set("height", "%sin" % document_height)
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guides = []
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guides.append(["horizontal", self.options.bleed])
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guides.append(["horizontal", document_height - self.options.bleed])
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guides.append(["vertical", self.options.bleed])
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guides.append(["vertical", document_width - self.options.bleed])
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guides.append(["vertical", (document_width / 2) - (spine_width / 2)])
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guides.append(["vertical", (document_width / 2) + (spine_width / 2)])
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namedview = self.svg.namedview
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if namedview is not None:
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if self.options.removeguides:
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for node in namedview.get_guides():
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node.delete()
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for guide in guides:
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newguide = namedview.add(Guide())
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newguide.set("orientation", guide[0])
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newguide.set("position", "%f" % (guide[1] * 96))
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if __name__ == "__main__":
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PerfectBoundCover().run()
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