1 files changed, 109 insertions, 0 deletions
diff --git a/share/extensions/perfectboundcover.py b/share/extensions/perfectboundcover.py
new file mode 100755
index 0000000..99314a2
--- /dev/null
+++ b/share/extensions/perfectboundcover.py
@@ -0,0 +1,109 @@
+#!/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 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 * .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=100.0,
+                          help="paper thickness measurement")
+        pars.add_argument("--paperthickness", type=float, default=0.0, help="paper thickness")
+        pars.add_argument("--coverthicknessmeasurement", default=100.0,
+                          help="cover thickness measurement")
+        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()