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+#!/usr/bin/env python
+# coding=utf-8
+#
+# Copyright (C) 2010 Craig Marshall, craig9 [at] gmail.com
+#
+# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+"""
+This script slices an inkscape drawing along the guides, similarly to
+the GIMP plugin called "guillotine". It can optionally export to the
+same directory as the SVG file with the same name, but with a number
+suffix. e.g.
+
+/home/foo/drawing.svg
+
+will export to:
+
+/home/foo/drawing0.png
+/home/foo/drawing1.png
+/home/foo/drawing2.png
+/home/foo/drawing3.png
+
+etc.
+
+"""
+
+import os
+import locale
+
+import inkex
+from inkex.command import inkscape
+
+class Guillotine(inkex.EffectExtension):
+ """Exports slices made using guides"""
+ def add_arguments(self, pars):
+ pars.add_argument("--directory", type=str, dest="directory")
+ pars.add_argument("--image", type=str, dest="image")
+ pars.add_argument("--ignore", type=inkex.Boolean, dest="ignore")
+
+ def get_all_horizontal_guides(self):
+ """
+ Returns all horizontal guides as a list of floats stored as
+ strings. Each value is the position from 0 in pixels.
+ """
+ for guide in self.svg.namedview.get_guides():
+ if guide.is_horizontal:
+ yield guide.point.y
+
+ def get_all_vertical_guides(self):
+ """
+ Returns all vertical guides as a list of floats stored as
+ strings. Each value is the position from 0 in pixels.
+ """
+ for guide in self.svg.namedview.get_guides():
+ if guide.is_vertical:
+ yield guide.point.x
+
+ def get_horizontal_slice_positions(self):
+ """
+ Make a sorted list of all horizontal guide positions,
+ including 0 and the document height, but not including
+ those outside of the canvas
+ """
+ horizontals = [0.0]
+ height = float(self.svg.height)
+ for y in self.get_all_horizontal_guides():
+ if 0.0 < y <= height:
+ horizontals.append(y)
+ horizontals.append(height)
+ return sorted(horizontals)
+
+ def get_vertical_slice_positions(self):
+ """
+ Make a sorted list of all vertical guide positions,
+ including 0 and the document width, but not including
+ those outside of the canvas.
+ """
+ verticals = [0.0]
+ width = float(self.svg.width)
+ for x in self.get_all_vertical_guides():
+ if 0.0 < x <= width:
+ verticals.append(x)
+ verticals.append(width)
+ return sorted(verticals)
+
+ def get_slices(self):
+ """
+ Returns a list of all "slices" as denoted by the guides
+ on the page. Each slice is really just a 4 element list of
+ floats (stored as strings), consisting of the X and Y start
+ position and the X and Y end position.
+ """
+ hs = self.get_horizontal_slice_positions()
+ vs = self.get_vertical_slice_positions()
+ slices = []
+ for i in range(len(hs) - 1):
+ for j in range(len(vs) - 1):
+ slices.append([vs[j], hs[i], vs[j + 1], hs[i + 1]])
+ return slices
+
+ def get_filename_parts(self):
+ """
+ Attempts to get directory and image as passed in by the inkscape
+ dialog. If the boolean ignore flag is set, then it will ignore
+ these settings and try to use the settings from the export
+ filename.
+ """
+
+ if not self.options.ignore:
+ if self.options.image == "" or self.options.image is None:
+ raise inkex.AbortExtension("Please enter an image name")
+ return self.options.directory, self.options.image
+ else:
+ '''
+ First get the export-filename from the document, if the
+ document has been exported before (TODO: Will not work if it
+ hasn't been exported yet), then uses this to return a tuple
+ consisting of the directory to export to, and the filename
+ without extension.
+ '''
+ try:
+ export_file = self.svg.get('inkscape:export-filename')
+ except KeyError:
+ raise inkex.AbortExtension(
+ "To use the export hints option, you "
+ "need to have previously exported the document. "
+ "Otherwise no export hints exist!")
+ dirname, filename = os.path.split(export_file)
+ filename = filename.rsplit(".", 1)[0] # Without extension
+ return dirname, filename
+
+ def get_localised_string(self, name):
+ return locale.format_string("%.f", float(name), 0)
+
+ def export_slice(self, sli, filename):
+ """
+ Runs inkscape's command line interface and exports the image
+ slice from the 4 coordinates in s, and saves as the filename
+ given.
+ """
+ coords = ":".join([self.get_localised_string(dim) for dim in sli])
+ inkscape(self.options.input_file, export_area=coords, export_filename=filename)
+
+ def export_slices(self, slices):
+ """
+ Takes the slices list and passes each one with a calculated
+ filename/directory into export_slice.
+ """
+ dirname, filename = self.get_filename_parts()
+ # Remove some crusty extensions from name template
+ if filename.endswith('.svg') or filename.endswith('.png'):
+ filename = filename.rsplit('.', 1)[0]
+ if '{' not in filename:
+ filename += '_{}'
+
+ dirname = os.path.abspath(os.path.expanduser(os.path.expandvars(dirname or './')))
+ if not os.path.isdir(dirname):
+ os.makedirs(dirname)
+
+ output_files = []
+ for i, slico in enumerate(slices):
+ fname = os.path.join(dirname, filename.format(i) + '.png')
+ output_files.append(fname)
+ self.export_slice(slico, fname)
+
+ self.debug("The sliced bitmaps have been saved as:" + "\n\n" + "\n".join(output_files))
+
+ def effect(self):
+ self.export_slices(self.get_slices())
+
+
+if __name__ == "__main__":
+ Guillotine().run()