261 lines
9.1 KiB
Python
261 lines
9.1 KiB
Python
#!/usr/bin/env python
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'''
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guillotine_plus.py
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Copyright (C) 2010 Craig Marshall, craig9 [at] gmail.com
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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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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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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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-----------------------
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This script slices an inkscape drawing along the guides, similarly to
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the GIMP plugin called "guillotine". It can optionally export to the
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same directory as the SVG file with the same name, but with a number
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suffix. e.g.
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/home/foo/drawing.svg
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will export to:
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/home/foo/drawing0.png
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/home/foo/drawing1.png
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/home/foo/drawing2.png
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/home/foo/drawing3.png
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etc.
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'''
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# standard library
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import locale
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import os
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import sys
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try:
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from subprocess import Popen, PIPE
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bsubprocess = True
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except:
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bsubprocess = False
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# local library
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import inkex
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import simplestyle
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locale.setlocale(locale.LC_ALL, '')
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def float_sort(a, b):
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'''
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This is used to sort the horizontal and vertical guide positions,
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which are floating point numbers, but which are held as text.
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'''
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return cmp(float(a), float(b))
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class Guillotine(inkex.Effect):
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"""Exports slices made using guides"""
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def __init__(self):
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inkex.Effect.__init__(self)
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self.OptionParser.add_option("--directory", action="store",
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type="string", dest="directory",
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default=None, help="")
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self.OptionParser.add_option("--image", action="store",
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type="string", dest="image",
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default=None, help="")
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self.OptionParser.add_option("--dpi", action="store",
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type="string", dest="dpi",
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default="90", help="")
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self.OptionParser.add_option("--ignore", action="store",
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type="inkbool", dest="ignore",
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default=None, help="")
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def get_guides(self):
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'''
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Returns all guide elements as an iterable collection
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'''
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root = self.document.getroot()
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guides = []
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xpath = self.document.xpath("//sodipodi:guide",
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namespaces=inkex.NSS)
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for g in xpath:
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guide = {}
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(x, y) = g.attrib['position'].split(',')
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if g.attrib['orientation'][:2] == '0,':
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guide['orientation'] = 'horizontal'
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guide['position'] = y
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guides.append(guide)
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elif g.attrib['orientation'][-2:] == ',0':
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guide['orientation'] = 'vertical'
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guide['position'] = x
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guides.append(guide)
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return guides
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def get_all_horizontal_guides(self):
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'''
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Returns all horizontal guides as a list of floats stored as
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strings. Each value is the position from 0 in pixels.
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'''
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guides = []
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for g in self.get_guides():
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if g['orientation'] == 'horizontal':
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guides.append(g['position'])
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return guides
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def get_all_vertical_guides(self):
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'''
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Returns all vertical guides as a list of floats stored as
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strings. Each value is the position from 0 in pixels.
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'''
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guides = []
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for g in self.get_guides():
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if g['orientation'] == 'vertical':
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guides.append(g['position'])
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return guides
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def get_horizontal_slice_positions(self):
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'''
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Make a sorted list of all horizontal guide positions,
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including 0 and the document height, but not including
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those outside of the canvas
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'''
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root = self.document.getroot()
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horizontals = ['0']
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height = self.unittouu(root.attrib['height'])
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for h in self.get_all_horizontal_guides():
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if h >= 0 and float(h) <= float(height):
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horizontals.append(h)
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horizontals.append(height)
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horizontals.sort(cmp=float_sort)
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return horizontals
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def get_vertical_slice_positions(self):
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'''
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Make a sorted list of all vertical guide positions,
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including 0 and the document width, but not including
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those outside of the canvas.
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'''
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root = self.document.getroot()
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verticals = ['0']
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width = self.unittouu(root.attrib['width'])
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for v in self.get_all_vertical_guides():
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if v >= 0 and float(v) <= float(width):
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verticals.append(v)
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verticals.append(width)
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verticals.sort(cmp=float_sort)
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return verticals
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def get_slices(self):
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'''
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Returns a list of all "slices" as denoted by the guides
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on the page. Each slice is really just a 4 element list of
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floats (stored as strings), consisting of the X and Y start
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position and the X and Y end position.
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'''
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hs = self.get_horizontal_slice_positions()
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vs = self.get_vertical_slice_positions()
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slices = []
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for i in range(len(hs)-1):
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for j in range(len(vs)-1):
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slices.append([vs[j], hs[i], vs[j+1], hs[i+1]])
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return slices
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def get_filename_parts(self):
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'''
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Attempts to get directory and image as passed in by the inkscape
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dialog. If the boolean ignore flag is set, then it will ignore
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these settings and try to use the settings from the export
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filename.
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'''
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if self.options.ignore == False:
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if self.options.image == "" or self.options.image is None:
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inkex.errormsg("Please enter an image name")
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sys.exit(0)
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return (self.options.directory, self.options.image)
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else:
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'''
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First get the export-filename from the document, if the
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document has been exported before (TODO: Will not work if it
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hasn't been exported yet), then uses this to return a tuple
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consisting of the directory to export to, and the filename
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without extension.
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'''
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svg = self.document.getroot()
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att = '{http://www.inkscape.org/namespaces/inkscape}export-filename'
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try:
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export_file = svg.attrib[att]
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except KeyError:
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inkex.errormsg("To use the export hints option, you " +
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"need to have previously exported the document. " +
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"Otherwise no export hints exist!")
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sys.exit(-1)
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dirname, filename = os.path.split(export_file)
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filename = filename.rsplit(".", 1)[0] # Without extension
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return (dirname, filename)
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def check_dir_exists(self, dir):
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if not os.path.isdir(dir):
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os.makedirs(dir)
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def get_localised_string(self, str):
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return locale.format("%.f", float(str), 0)
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def export_slice(self, s, filename):
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'''
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Runs inkscape's command line interface and exports the image
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slice from the 4 coordinates in s, and saves as the filename
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given.
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'''
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svg_file = self.args[-1]
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command = "inkscape -d " + self.options.dpi + " -a %s:%s:%s:%s -e \"%s\" \"%s\" " % (self.get_localised_string(s[0]), self.get_localised_string(s[1]), self.get_localised_string(s[2]), self.get_localised_string(s[3]), filename, svg_file)
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if bsubprocess:
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p = Popen(command, shell=True, stdout=PIPE, stderr=PIPE)
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return_code = p.wait()
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f = p.stdout
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err = p.stderr
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else:
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_, f, err = os.open3(command)
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f.close()
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def export_slices(self, slices):
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'''
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Takes the slices list and passes each one with a calculated
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filename/directory into export_slice.
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'''
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dirname, filename = self.get_filename_parts()
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output_files = list()
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if dirname == '' or dirname == None:
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dirname = './'
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dirname = os.path.expanduser(dirname)
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dirname = os.path.expandvars(dirname)
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dirname = os.path.abspath(dirname)
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if dirname[-1] != os.path.sep:
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dirname += os.path.sep
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self.check_dir_exists(dirname)
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i = 0
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for s in slices:
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f = dirname + filename + str(i) + ".png"
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output_files.append(f)
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self.export_slice(s, f)
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i += 1
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inkex.errormsg(_("The sliced bitmaps have been saved as:") + "\n\n" + "\n".join(output_files))
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def effect(self):
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slices = self.get_slices()
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self.export_slices(slices)
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if __name__ == "__main__":
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e = Guillotine()
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e.affect()
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