## Copyright (C) 2010 Shai Ayal
##
## This file is part of Octave.
##
## Octave 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 3 of the License, or (at
## your option) any later version.
##
## Octave 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 Octave; see the file COPYING.  If not, see
## <http://www.gnu.org/licenses/>.

## -*- texinfo -*-
## @deftypefn {Function File} {} __fltk_print__ (@var{@dots{}})
## Undocumented internal function.
## @end deftypefn

function __fltk_print__ (opts)

  if (opts.debug)
    fprintf ("FLTK backend: output file = '%s' for device '%s'\n", opts.name, opts.devopt);
  endif
  
  file2unlink = "";

  switch lower (opts.devopt)
  case {"eps", "eps2", "epsc", "epsc2"}
    drawnow ("eps", opts.name);
    if (opts.tight_flag)
      __tight_eps_bbox__ (opts, opts.name);
    endif
  case {"epslatex", "epslatexstandalone", "pslatex"}
    # FIXME - format GL2PS_TEX is not implemented
    drawnow ("epslatex", opts.name);
    if (opts.tight_flag)
      __tight_eps_bbox__ (opts, opts.name);
    endif
  case {"tikz"}
    ## FIXME - format GL2PS_PGF if not implemented
    drawnow ("pgf", opts.name);
  case {"ps", "ps2", "psc", "psc2"}
    ## FIXME - format GL2PS_PS if not implemented
    drawnow ("ps", opts.name);
  case {"pdf"}
    ## FIXME - format GL2PS_PDF if not implemented
    drawnow ("pdf", opts.name);
  case {"svg"}
    ## FIXME - format GL2PS_SVG if not implemented
    drawnow ("svg", opts.name);
  case {"gif", "jpeg", "png", "pbm"}
    opts.ghostscript_device = opts.devopt;
    opts.ghostscript_output = opts.name;
    opts.name = strcat (tmpnam (), ".eps");
    file2unlink = opts.name;
    opts.devopt = "epsc";
    drawnow ("eps", opts.name);
    if (opts.tight_flag)
      __tight_eps_bbox__ (opts, opts.name);
    endif
  case {"aifm", "dxf", "emf", "fig", "hpgl"}
    status = __pstoedit__ (opts);
  case {"pstex", "mf", "emf"}
    tmp_figfile = strcat (tmpnam (), ".fig");
    file2unlink = tmp_figfile;
    status = __pstoedit__ (opts, "fig", tmp_figfile);
    if (status == 0)
      status = __fig2dev__ (opts, tmp_figfile);
    endif
  otherwise
    error ("print:unavailabledevice", 
    "print.m: device '%s' is unavailable for the fltk backend.", opts.devopt)
  endswitch

  if (! isempty (opts.ghostscript_device))
    __ghostscript__ (opts);
  endif

  if (! isempty (file2unlink))
    [status, output] = unlink (file2unlink);
    if (status != 0)
      disp (output)
      warning ("print.m: failed to delete temporay file, '%s'.", file2unlink)
    endif
  endif

endfunction

function status = __fig2dev__ (opts, figfile, devopt, devfile)
  if (nargin < 4)
    devfile = opts.name;
  endif
  if (nargin < 3)
    devopt =  opts.devopt;
  endif
  cmd = sprintf ("%s -L %s %s %s 2>&1", opts.fig2dev_binary, devopt, figfile, devfile);
  [status, output] = system (cmd);
  if (opts.debug)
    fprintf ("fig2dev command: %s", cmd)
  endif
  if (status)
    warning ("print:fig2devfailed", "print.m: error running fig2dev.")
    disp (cmd)
    disp (output)
  endif
endfunction

function status = __pstoedit__ (opts, devopt, name)
  if (nargin < 3)
    name = opts.name;
  endif
  if (nargin < 2)
    devopt =  opts.devopt;
  endif
  tmp_epsfile = strcat (tmpnam (), ".eps");
  if (opts.tight_flag)
    __tight_eps_bbox__ (opts, tmp_epsfile);
  endif
  drawnow ("eps", tmp_epsfile)
  cmd = sprintf ("%s -f %s %s %s 2>&1", opts.pstoedit_binary, devopt, tmp_epsfile, name);
  [status, output] = system (cmd);
  if (opts.debug)
    fprintf ("pstoedit command: %s", cmd)
  endif
  if (status)
    warning ("print:pstoeditfailed", "print.m: error running pstoedit.")
    disp (cmd)
    disp (output)
  endif
  [status, output] = unlink (tmp_epsfile);
  if (status != 0)
    disp (output)
    warning ("print.m: failed to delete temporay file, '%s'.", tmp_epsfile)
  endif
endfunction