contrib/imgconvert.py

   1 #!/usr/bin/env python
   2 # -*- coding: ISO-8859-1 -*-
   3 #
   4 #
   5 # Copyright (C) 2005 André Wobst <wobsta@users.sourceforge.net>
   6 #
   7 # epstopng is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # epstopng is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with epstopng; if not, write to the Free Software
  19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20
  21 from optparse import OptionParser
  22 from pyx import *
  23 from pyx import version
  24
  25 parser = OptionParser(usage="usage: %prog -o output-file [-r resolution] image-file",
  26                       version="%prog " + version.version)
  27 parser.add_option("-o", "--output",
  28                   type="string", dest="output",
  29                   help="output-file")
  30 parser.add_option("-r", "--resolution",
  31                   type="string", dest="resolution", default=None,
  32                   help="resolution of the image in dpi (optional when available in the image data)")
  33 (options, args) = parser.parse_args()
  34 if len(args) != 1:
  35     parser.error("can process a single image-file only")
  36
  37 try:
  38     im = bitmap.jpegimage(args[0])
  39 except ValueError:
  40     import Image
  41     im = Image.open(args[0])
  42     compressmode = "Flate"
  43 else:
  44     compressmode = None
  45 if options.resolution is None:
  46     width = None
  47 else:
  48     width = im.size[0] / float(options.resolution) * unit.inch
  49 c = canvas.canvas()
  50 c.insert(bitmap.bitmap(0, 0, im, compressmode=compressmode, width=width))
  51 c.writetofile(options.output)