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Add PS and PDF output for the fltk backend.
author Ben Abbott <bpabbott@mac.com>
date Wed, 04 Aug 2010 20:32:49 -0400
parents 05ba991794d4
children dd6b90f44ae5
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1 ## Copyright (C) 2010 Ben Abbott
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2 ##
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3 ## This program is free software; you can redistribute it and/or modify
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4 ## it under the terms of the GNU General Public License as published by
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5 ## the Free Software Foundation; either version 2 of the License, or
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6 ## (at your option) any later version.
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7 ##
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8 ## This program is distributed in the hope that it will be useful,
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9 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 ## GNU General Public License for more details.
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12 ##
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13 ## You should have received a copy of the GNU General Public License
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14 ## along with Octave; see the file COPYING. If not, see
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15 ## <http://www.gnu.org/licenses/>.
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16
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17 ## -*- texinfo -*-
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18 ## @deftypefn {Function File} {} __ghostscript__ (@var{@dots{}})
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19 ## Undocumented internal function.
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20 ## @end deftypefn
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21
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22 ## Author: Ben Abbott <bpabbott@mac.com>
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23 ## Created: 2010-07-26
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24
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25 function status = __ghostscript__ (varargin);
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26
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27 opts.binary = "";
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28 opts.source = "";
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29 opts.output = "";
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30 opts.device = "";
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31 opts.epscrop = false;
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32 opts.antialiasing = false;
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33 opts.resolution = 150;
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34 opts.papersize = "";
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35 opts.pageoffset = [0 0];
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36 opts.debug = false;
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37
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38 offsetfile = "";
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39
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40 args = varargin;
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41 n = find (cellfun (@isstruct, args));
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42 if (! isempty (n))
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43 f = fieldnames (args{n});
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44 for m = 1:numel(f)
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45 opts.(f{m}) = args{n}.(f{m});
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46 endfor
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47 args(n) = [];
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48 endif
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49 for n = 1:2:numel(args)
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50 opts.(args{n}) = args{n+1};
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51 endfor
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52
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53 gs_opts = sprintf ("-dQUIET -dNOPAUSE -dBATCH -dSAFER -sDEVICE=%s", opts.device);
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54 if (opts.antialiasing)
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55 gs_opts = sprintf ("%s -dTextAlphaBits=4 -dGraphicsAlphaBits=4", gs_opts);
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56 gs_opts = sprintf ("%s -r%dx%d", gs_opts, [1, 1] * opts.resolution);
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57 elseif (any (strcmp (opts.device, {"pswrite", "ps2write", "pdfwrite"})))
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58 gs_opts = sprintf ("%s -dEmbedAllFonts=true", gs_opts);
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59 if (strcmp (opts.device, "pdfwrite"))
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60 ## Optimize for loading
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61 gs_opts = sprintf ("%s -dOptimize=true", gs_opts);
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62 endif
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63 endif
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64
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65 if (opts.epscrop)
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66 ## papersize is specified by the eps bbox
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67 gs_opts = sprintf ("%s -dEPSCrop", gs_opts);
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68 elseif (! isempty (opts.papersize))
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69 if (ischar (opts.papersize))
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70 gs_opts = sprintf ("%s -sPAPERSIZE=%s", gs_opts, opts.papersize);
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71 elseif (isnumeric (opts.papersize) && numel (opts.papersize) == 2)
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72 gs_opts = sprintf ("%s -dDEVICEWIDTHPOINTS=%d -dDEVICEHEIGHTPOINTS=%d", gs_opts, opts.papersize);
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73 if (opts.papersize(1) > opts.papersize(2))
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74 ## Lanscape mode: This option will result in automatic rotation of the document page if the
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75 ## requested page size matches one of the default page sizes
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76 gs_opts = sprintf ("%s -dNORANGEPAGESIZE", gs_opts);
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77 endif
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78 else
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79 error ("print:badpapersize", "__ghostscript__.m: invalid 'papersize'")
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80 endif
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81 gs_opts = sprintf ("%s -dFIXEDMEDIA", gs_opts);
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82 offsetfile = strcat (tmpnam (), ".ps");
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83 fid = fopen (offsetfile, "w");
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84 if (fid == -1)
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85 error ("print:fopenfailed", "__ghostscript__.m: fopen() failed.");
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86 endif
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87 fprintf (fid, "%s\n", "%!PS-Adobe-3.0")
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88 fprintf (fid, "%s [%d %d] %s\n", "<< /Margins [0 0] /.HWMargins [0 0 0 0] /PageOffset",
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89 opts.pageoffset, ">> setpagedevice");
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90 fprintf (fid, "%%EOF");
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91 status = fclose (fid);
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92 if (status == -1)
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93 error ("print:fclosefailed", "__ghostscript__.m: fclose() failed.");
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94 endif
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95 if (opts.debug)
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96 [~,output] = system (sprintf ("cat %s", offsetfile));
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97 fprintf ("---- begin %s ----\n", offsetfile)
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98 disp (output)
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99 fprintf ("----- end %s -----\n", offsetfile)
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100 endif
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101 endif
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102
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103 cmd = sprintf ("%s %s -sOutputFile=%s %s %s",
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104 opts.binary, gs_opts,
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105 opts.output, offsetfile, opts.source);
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106
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107 if (opts.debug)
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108 fprintf ("Ghostscript command: %s\n", cmd);
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109 endif
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110
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111 [status, output] = system (cmd);
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112
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113 if (status != 0)
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114 warning ("print:ghostscripterror",
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115 "print.m: ghostscript failed to convert output to file '%s'.", opts.output)
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116 endif
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117
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118 endfunction
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119
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120