git.inspyration.org Git - odoo/odoo.git/blob

   1 # -*- coding: utf-8 -*-
   2 #
   3 # Copyright (C) 2000-2005 by Yasushi Saito (yasushi.saito@gmail.com)
   4 #
   5 # Jockey is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License as published by the
   7 # Free Software Foundation; either version 2, or (at your option) any
   8 # later version.
   9 #
  10 # Jockey is distributed in the hope that it will be useful, but WITHOUT
  11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13 # for more details.
  14 #
  15 import pychart_util
  16 import theme
  17 import sys
  18 import os
  19 import os.path
  20 import pscanvas
  21 import tempfile
  22 import string
  23 import basecanvas
  24 from scaling import *
  25
  26 def get_gs_path():
  27     """Guess where the Ghostscript executable is
  28     and return its absolute path name."""
  29     path = os.defpath
  30     if os.environ.has_key("PATH"):
  31         path = os.environ["PATH"]
  32     for dir in path.split(os.pathsep):
  33         for name in ("gs", "gs.exe", "gswin32c.exe"):
  34             g = os.path.join(dir, name)
  35             if os.path.exists(g):
  36                 return g
  37     raise Exception, "Ghostscript not found."
  38
  39 class T(pscanvas.T):
  40     def __write_contents(self, fp):
  41         fp.write(pscanvas.preamble_text)
  42         for name, id in self.__font_ids.items():
  43             fp.write("/%s {/%s findfont SF} def\n" % (id, name))
  44         fp.write("%d %d translate\n" % (-self.bbox[0], -self.bbox[1]))
  45         fp.writelines(self.__output_lines)
  46         fp.write("showpage end\n")
  47         fp.flush()
  48
  49     def close(self):
  50         # Don't call pscanvas.T.close, as it creates a
  51         # ps file.
  52         basecanvas.T.close(self)
  53
  54     def start_gs(self, arg):
  55         self.bbox = theme.adjust_bounding_box([xscale(self.__xmin),
  56                                                yscale(self.__ymin),
  57                                                xscale(self.__xmax),
  58                                                yscale(self.__ymax)])
  59
  60         gs_path = get_gs_path()
  61         self.pipe_fp = None
  62         if self.__output_lines == []:
  63             return
  64
  65         if sys.platform != "win32" and hasattr(os, "popen"):
  66             # UNIX-like systems
  67             cmdline = "\"%s\" -q %s -g%dx%d -q >/dev/null 2>&1" % \
  68             (gs_path, arg,
  69              self.bbox[2] - self.bbox[0],
  70              self.bbox[3] - self.bbox[1])
  71             self.pipe_fp = os.popen(cmdline, "w")
  72             self.__write_contents(self.pipe_fp)
  73         else:
  74             # XXX should use mktemp, but need to support python<=2.2 as well.
  75             fname = tempfile.mktemp("xxx")
  76             fp = open(fname, "wb")
  77             self.__write_contents(fp)
  78             fp.close()
  79             cmdline = "\"%s\" -q %s -g%dx%d -q <%s >NUL" % \
  80             (gs_path, arg,
  81              self.bbox[2] - self.bbox[0],
  82              self.bbox[3] - self.bbox[1], fname)
  83             os.system(cmdline)
  84             os.unlink(fname)
  85     def close_gs(self):
  86         if self.pipe_fp:
  87             self.pipe_fp.close()
  88             self.pipe_fp = None