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postscript.c

/* The GIMP -- an image manipulation program
 * Copyright (C) 1995 Spencer Kimball and Peter Mattis
 * PostScript file plugin
 * PostScript writing and GhostScript interfacing code
 * Copyright (C) 1997-98 Peter Kirchgessner
 * (email: peter@kirchgessner.net, WWW: http://www.kirchgessner.net)
 *
 * Added controls for TextAlphaBits and GraphicsAlphaBits
 *   George White <aa056@chebucto.ns.ca>
 *
 * Added Ascii85 encoding
 *   Austin Donnelly <austin@gimp.org>
 *
 * This program 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 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 */

/* Event history:
 * V 0.90, PK, 28-Mar-97: Creation.
 * V 0.91, PK, 03-Apr-97: Clip everything outside BoundingBox.
 *             24-Apr-97: Multi page read support.
 * V 1.00, PK, 30-Apr-97: PDF support.
 * V 1.01, PK, 05-Oct-97: Parse rc-file.
 * V 1.02, GW, 09-Oct-97: Antialiasing support.
 *         PK, 11-Oct-97: No progress bars when running non-interactive.
 *                        New procedure file_ps_load_setargs to set
 *                        load-arguments non-interactively.
 *                        If GS_OPTIONS are not set, use at least "-dSAFER"
 * V 1.03, nn, 20-Dec-97: Initialize some variables
 * V 1.04, PK, 20-Dec-97: Add Encapsulated PostScript output and preview
 * V 1.05, PK, 21-Sep-98: Write b/w-images (indexed) using image-operator
 * V 1.06, PK, 22-Dec-98: Fix problem with writing color PS files.
 *                        Ghostview may hang when displaying the files.
 * V 1.07, PK, 14-Sep-99: Add resolution to image
 * V 1.08, PK, 16-Jan-2000: Add PostScript-Level 2 by Austin Donnelly
 * V 1.09, PK, 15-Feb-2000: Force showpage on EPS-files
 *                          Add "RunLength" compression
 *                          Fix problem with "Level 2" toggle
 * V 1.10, PK, 15-Mar-2000: For load EPSF, allow negative Bounding Box Values
 *                          Save PS: dont start lines of image data with %%
 *                          to prevent problems with stupid PostScript
 *                          analyzer programs (Stanislav Brabec)
 *                          Add BeginData/EndData comments
 *                          Save PS: Set default rotation to 0
 * V 1.11, PK, 20-Aug-2000: Fix problem with BoundingBox recognition
 *                          for Mac files.
 *                          Fix problem with loop when reading not all
 *                          images of a multi page file.
 *         PK, 31-Aug-2000: Load PS: Add checks for space in filename.
 * V 1.12  PK, 19-Jun-2001: Fix problem with command line switch --
 *                          (reported by Ferenc Wagner)
 * V 1.13  PK, 07-Apr-2002: Fix problem with DOS binary EPS files
 * V 1.14  PK, 14-May-2002: Workaround EPS files of Adb. Ill. 8.0
 * V 1.15  PK, 04-Oct-2002: Be more accurate with using BoundingBox
 * V 1.16  PK, 22-Jan-2004: Don't use popen(), use g_spawn_async_with_pipes()
 *                          or g_spawn_sync().
 * V 1.17  PK, 19-Sep-2004: Fix problem with interpretation of bounding box
 */
#define VERSIO 1.17
static char dversio[] = "v1.17  19-Sep-2004";
static char ident[] = "@(#) GIMP PostScript/PDF file-plugin v1.17  19-Sep-2004";

#include "config.h"

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#include <sys/types.h>

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>

#include "libgimp/stdplugins-intl.h"

#ifdef G_OS_WIN32
/* On Win32 we don't use pipes. Use a real output file for ghostscript */
#define USE_REAL_OUTPUTFILE
#endif

#ifdef USE_REAL_OUTPUTFILE

#ifdef G_OS_WIN32
#include <process.h>            /* For _getpid() */
#endif
#else
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#endif


#define STR_LENGTH 64

#ifndef G_OS_WIN32
#define DEFAULT_GS_PROG "gs"
#else
/* We want the console ghostscript application. It should be in the PATH */
#define DEFAULT_GS_PROG "gswin32c"
#endif


/* Load info */
typedef struct
{
  guint resolution;        /* resolution (dpi) at which to run ghostscript */
  guint width, height;     /* desired size (ghostscript may ignore this) */
  gint  use_bbox;          /* 0: use width/height, 1: try to use BoundingBox */
  gchar pages[STR_LENGTH]; /* Pages to load (eg.: 1,3,5-7) */
  gint  pnm_type;          /* 4: pbm, 5: pgm, 6: ppm, 7: automatic */
  gint  textalpha;         /* antialiasing: 1,2, or 4 TextAlphaBits */
  gint  graphicsalpha;     /* antialiasing: 1,2, or 4 GraphicsAlphaBits */
} PSLoadVals;

static PSLoadVals plvals =
{
  100,         /* 100 dpi                        */
  826, 1170,   /* default width/height (A4)      */
  1,           /* try to use BoundingBox         */
  "1",         /* pages to load                  */
  6,           /* use ppm (colour)               */
  1,           /* dont use text antialiasing     */
  1            /* dont use graphics antialiasing */
};


/* Save info  */
typedef struct
{
  gdouble width, height;      /* Size of image */
  gdouble x_offset, y_offset; /* Offset to image on page */
  gint    unit_mm;            /* Unit of measure (0: inch, 1: mm) */
  gint    keep_ratio;         /* Keep aspect ratio */
  gint    rotate;             /* Rotation (0, 90, 180, 270) */
  gint    level;              /* PostScript Level */
  gint    eps;                /* Encapsulated PostScript flag */
  gint    preview;            /* Preview Flag */
  gint    preview_size;       /* Preview size */
} PSSaveVals;

static PSSaveVals psvals =
{
  287.0, 200.0,   /* Image size (A4) */
  5.0, 5.0,       /* Offset */
  1,              /* Unit is mm */
  1,              /* Keep edge ratio */
  0,              /* Rotate */
  2,              /* PostScript Level */
  0,              /* Encapsulated PostScript flag */
  0,              /* Preview flag */
  256             /* Preview size */
};


/* Declare some local functions.
 */
static void   query            (void);
static void   run              (const gchar       *name,
                                gint               nparams,
                                const GimpParam   *param,
                                gint              *nreturn_vals,
                                GimpParam        **return_vals);

static gint32 load_image       (const gchar       *filename);
static gint   save_image       (const gchar       *filename,
                                gint32             image_ID,
                                gint32             drawable_ID);

static gint   save_gray        (FILE              *ofp,
                                gint32             image_ID,
                                gint32             drawable_ID);
static gint   save_bw          (FILE              *ofp,
                                gint32             image_ID,
                                gint32             drawable_ID);
static gint   save_index       (FILE              *ofp,
                                gint32             image_ID,
                                gint32             drawable_ID);
static gint   save_rgb         (FILE              *ofp,
                                gint32             image_ID,
                                gint32             drawable_ID);

static gint32 create_new_image (const gchar       *filename,
                        guint              pagenum,
                        guint              width,
                        guint              height,
                        GimpImageBaseType  type,
                        gint32            *layer_ID,
                        GimpDrawable     **drawable,
                        GimpPixelRgn      *pixel_rgn);

static void   check_load_vals  (void);
static void   check_save_vals  (void);

static gint   page_in_list     (gchar             *list,
                                guint              pagenum);

static gint   get_bbox         (const gchar       *filename,
                                gint              *x0,
                                gint              *y0,
                                gint              *x1,
                                gint              *y1);

static FILE * ps_open          (const gchar       *filename,
                                const PSLoadVals  *loadopt,
                                gint              *llx,
                                gint              *lly,
                                gint              *urx,
                                gint              *ury,
                                gint              *is_epsf,
                                gint              *ChildPid);

static void   ps_close         (FILE              *ifp,
                                gint              ChildPid);

static gboolean  skip_ps       (FILE              *ifp);

static gint32 load_ps          (const gchar       *filename,
                                guint              pagenum,
                                FILE              *ifp,
                                gint               llx,
                                gint               lly,
                                gint               urx,
                                gint               ury);

static void   save_ps_header   (FILE              *ofp,
                                const gchar       *filename);
static void   save_ps_setup    (FILE              *ofp,
                                gint32             drawable_ID,
                                gint               width,
                                gint               height,
                                gint               bpp);
static void   save_ps_trailer  (FILE              *ofp);
static void   save_ps_preview  (FILE              *ofp,
                                gint32             drawable_ID);
static void   dither_grey      (guchar            *grey,
                                guchar            *bw,
                                gint               npix,
                                gint               linecount);


/* Dialog-handling */

static gboolean  load_dialog               (void);
static void      load_pages_entry_callback (GtkWidget *widget,
                                            gpointer   data);

typedef struct
{
  GtkObject *adjustment[4];
  gint       level;
} SaveDialogVals;

static gboolean  save_dialog              (void);
static void      save_unit_toggle_update  (GtkWidget *widget,
                                           gpointer   data);

GimpPlugInInfo PLUG_IN_INFO =
{
  NULL,  /* init_proc  */
  NULL,  /* quit_proc  */
  query, /* query_proc */
  run,   /* run_proc   */
};


/* The run mode */
static GimpRunMode l_run_mode;

static void compress_packbits (int            nin,
                               unsigned char *src,
                               int           *nout,
                               unsigned char *dst);


static guint32 ascii85_buf;
static int ascii85_len = 0;
static int ascii85_linewidth = 0;

static void
ascii85_init (void)
{
  ascii85_len = 0;
  ascii85_linewidth = 0;
}

static void
ascii85_flush (FILE *ofp)
{
  char c[5];
  int i;
  gboolean zero_case = (ascii85_buf == 0);
  static int max_linewidth = 75;

  for (i=4; i >= 0; i--)
    {
      c[i] = (ascii85_buf % 85) + '!';
      ascii85_buf /= 85;
    }
  /* check for special case: "!!!!!" becomes "z", but only if not
   * at end of data. */
  if (zero_case && (ascii85_len == 4))
    {
      if (ascii85_linewidth >= max_linewidth)
      {
        putc ('\n', ofp);
        ascii85_linewidth = 0;
      }
      putc ('z', ofp);
      ascii85_linewidth++;
    }
  else
    {
      for (i=0; i < ascii85_len+1; i++)
      {
        if ((ascii85_linewidth >= max_linewidth) && (c[i] != '%'))
        {
          putc ('\n', ofp);
          ascii85_linewidth = 0;
        }
      putc (c[i], ofp);
        ascii85_linewidth++;
      }
    }

  ascii85_len = 0;
  ascii85_buf = 0;
}

static inline void
ascii85_out (unsigned char byte, FILE *ofp)
{
  if (ascii85_len == 4)
    ascii85_flush (ofp);

  ascii85_buf <<= 8;
  ascii85_buf |= byte;
  ascii85_len++;
}

static void
ascii85_nout (int n, unsigned char *uptr, FILE *ofp)
{
 while (n-- > 0)
 {
   ascii85_out (*uptr, ofp);
   uptr++;
 }
}

static void
ascii85_done (FILE *ofp)
{
  if (ascii85_len)
    {
      /* zero any unfilled buffer portion, then flush */
      ascii85_buf <<= (8 * (4-ascii85_len));
      ascii85_flush (ofp);
    }

  putc ('~', ofp);
  putc ('>', ofp);
  putc ('\n', ofp);
}


static void
compress_packbits (int nin,
                   unsigned char *src,
                   int *nout,
                   unsigned char *dst)

{register unsigned char c;
 int nrepeat, nliteral;
 unsigned char *run_start;
 unsigned char *start_dst = dst;
 unsigned char *last_literal = NULL;

 for (;;)
 {
   if (nin <= 0) break;

   run_start = src;
   c = *run_start;

   /* Search repeat bytes */
   if ((nin > 1) && (c == src[1]))
   {
     nrepeat = 1;
     nin -= 2;
     src += 2;
     while ((nin > 0) && (c == *src))
     {
       nrepeat++;
       src++;
       nin--;
       if (nrepeat == 127) break; /* Maximum repeat */
     }

     /* Add two-byte repeat to last literal run ? */
     if (   (nrepeat == 1)
         && (last_literal != NULL) && (((*last_literal)+1)+2 <= 128))
     {
       *last_literal += 2;
       *(dst++) = c;
       *(dst++) = c;
       continue;
     }

     /* Add repeat run */
     *(dst++) = (unsigned char)((-nrepeat) & 0xff);
     *(dst++) = c;
     last_literal = NULL;
     continue;
   }
   /* Search literal bytes */
   nliteral = 1;
   nin--;
   src++;

   for (;;)
   {
     if (nin <= 0) break;

     if ((nin >= 2) && (src[0] == src[1])) /* A two byte repeat ? */
       break;

     nliteral++;
     nin--;
     src++;
     if (nliteral == 128) break; /* Maximum literal run */
   }

   /* Could be added to last literal run ? */
   if ((last_literal != NULL) && (((*last_literal)+1)+nliteral <= 128))
   {
     *last_literal += nliteral;
   }
   else
   {
     last_literal = dst;
     *(dst++) = (unsigned char)(nliteral-1);
   }
   while (nliteral-- > 0) *(dst++) = *(run_start++);
 }
 *nout = dst - start_dst;
}


typedef struct
{
  long eol;
  long begin_data;
} PS_DATA_POS;

static PS_DATA_POS ps_data_pos = { 0, 0 };

static void
ps_begin_data (FILE *ofp)

{
                   /* %%BeginData: 123456789012 ASCII Bytes */
 fprintf (ofp, "%s", "%%BeginData:                         ");
 fflush (ofp);
 ps_data_pos.eol = ftell (ofp);
 fprintf (ofp, "\n");
 fflush (ofp);
 ps_data_pos.begin_data = ftell (ofp);
}

static void
ps_end_data (FILE *ofp)

{long end_data;
 char s[64];

 if ((ps_data_pos.begin_data > 0) && (ps_data_pos.eol > 0))
 {
   fflush (ofp);
   end_data = ftell (ofp);
   if (end_data > 0)
   {
     sprintf (s, "%ld ASCII Bytes", end_data-ps_data_pos.begin_data);
     if (fseek (ofp, ps_data_pos.eol - strlen (s), SEEK_SET) == 0)
     {
       fprintf (ofp, "%s", s);
       fseek (ofp, 0, SEEK_END);
     }
   }
 }
 fprintf (ofp, "%s\n", "%%EndData");
}


MAIN ()

static void
query (void)
{
  static GimpParamDef load_args[] =
  {
    { GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
    { GIMP_PDB_STRING, "filename", "The name of the file to load" },
    { GIMP_PDB_STRING, "raw_filename", "The name of the file to load" }
  };
  static GimpParamDef load_return_vals[] =
  {
    { GIMP_PDB_IMAGE, "image", "Output image" }
  };

  static GimpParamDef set_load_args[] =
  {
    { GIMP_PDB_INT32, "resolution", "Resolution to interprete image (dpi)" },
    { GIMP_PDB_INT32, "width", "Desired width" },
    { GIMP_PDB_INT32, "height", "Desired height" },
    { GIMP_PDB_INT32, "check_bbox", "0: Use width/height, 1: Use BoundingBox" },
    { GIMP_PDB_STRING, "pages", "Pages to load (e.g.: 1,3,5-7)" },
    { GIMP_PDB_INT32, "coloring", "4: b/w, 5: grey, 6: colour image, 7: automatic" },
    { GIMP_PDB_INT32, "TextAlphaBits", "1, 2, or 4" },
    { GIMP_PDB_INT32, "GraphicsAlphaBits", "1, 2, or 4" }
  };

  static GimpParamDef thumb_args[] =
  {
    { GIMP_PDB_STRING, "filename",     "The name of the file to load"  },
    { GIMP_PDB_INT32,  "thumb_size",   "Preferred thumbnail size"      }
  };
  static GimpParamDef thumb_return_vals[] =
  {
    { GIMP_PDB_IMAGE, "image",         "Output image" }
  };

  static GimpParamDef save_args[] =
  {
    { GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
    { GIMP_PDB_IMAGE, "image", "Input image" },
    { GIMP_PDB_DRAWABLE, "drawable", "Drawable to save" },
    { GIMP_PDB_STRING, "filename", "The name of the file to save the image in" },
    { GIMP_PDB_STRING, "raw_filename",
            "The name of the file to save the image in" },
    { GIMP_PDB_FLOAT, "width", "Width of the image in PostScript file (0: use input image size)" },
    { GIMP_PDB_FLOAT, "height", "Height of image in PostScript file (0: use input image size)" },
    { GIMP_PDB_FLOAT, "x_offset", "X-offset to image from lower left corner" },
    { GIMP_PDB_FLOAT, "y_offset", "Y-offset to image from lower left corner" },
    { GIMP_PDB_INT32, "unit", "Unit for width/height/offset. 0: inches, 1: millimeters" },
    { GIMP_PDB_INT32, "keep_ratio", "0: use width/height, 1: keep aspect ratio" },
    { GIMP_PDB_INT32, "rotation", "0, 90, 180, 270" },
    { GIMP_PDB_INT32, "eps_flag", "0: PostScript, 1: Encapsulated PostScript" },
    { GIMP_PDB_INT32, "preview", "0: no preview, >0: max. size of preview" },
    { GIMP_PDB_INT32, "level", "1: PostScript Level 1, 2: PostScript Level 2" }
  };

  gimp_install_procedure ("file_ps_load",
                          "load PostScript documents",
                          "load PostScript documents",
                          "Peter Kirchgessner <peter@kirchgessner.net>",
                          "Peter Kirchgessner",
                          dversio,
                          N_("PostScript document"),
                          NULL,
                          GIMP_PLUGIN,
                          G_N_ELEMENTS (load_args),
                          G_N_ELEMENTS (load_return_vals),
                          load_args, load_return_vals);

  gimp_register_file_handler_mime ("file_ps_load", "application/postscript");
  gimp_register_magic_load_handler ("file_ps_load",
                            "ps",
                            "",
                                    "0,string,%!,0,long,0xc5d0d3c6");

  gimp_install_procedure ("file_eps_load",
                          "load Encapsulated PostScript images",
                          "load Encapsulated PostScript images",
                          "Peter Kirchgessner <peter@kirchgessner.net>",
                          "Peter Kirchgessner",
                          dversio,
                          N_("Encapsulated PostScript image"),
                          NULL,
                          GIMP_PLUGIN,
                          G_N_ELEMENTS (load_args),
                          G_N_ELEMENTS (load_return_vals),
                          load_args, load_return_vals);

  gimp_register_file_handler_mime ("file_eps_load", "image/x-eps");
  gimp_register_magic_load_handler ("file_eps_load",
                            "eps",
                            "",
                                    "0,string,%!,0,long,0xc5d0d3c6");

  gimp_install_procedure ("file_pdf_load",
                          "load PDF documents",
                          "load PDF documents",
                          "Peter Kirchgessner <peter@kirchgessner.net>",
                          "Peter Kirchgessner",
                          dversio,
                          N_("PDF document"),
                          NULL,
                          GIMP_PLUGIN,
                          G_N_ELEMENTS (load_args),
                          G_N_ELEMENTS (load_return_vals),
                          load_args, load_return_vals);

  gimp_register_file_handler_mime ("file_pdf_load", "application/pdf");
  gimp_register_magic_load_handler ("file_pdf_load",
                            "pdf",
                            "",
                                    "0,string,%PDF");

  gimp_install_procedure ("file_ps_load_setargs",
                          "set additional parameters for procedure file_ps_load",
                          "set additional parameters for procedure file_ps_load",
                          "Peter Kirchgessner <peter@kirchgessner.net>",
                          "Peter Kirchgessner",
                          dversio,
                          NULL,
                          NULL,
                          GIMP_PLUGIN,
                          G_N_ELEMENTS (set_load_args), 0,
                          set_load_args, NULL);

  gimp_install_procedure ("file_ps_load_thumb",
                          "Loads a small preview from a Postscript or PDF document",
                          "",
                          "Peter Kirchgessner <peter@kirchgessner.net>",
                          "Peter Kirchgessner",
                          dversio,
                    NULL,
                    NULL,
                          GIMP_PLUGIN,
                          G_N_ELEMENTS (thumb_args),
                          G_N_ELEMENTS (thumb_return_vals),
                          thumb_args, thumb_return_vals);

  gimp_register_thumbnail_loader ("file_ps_load",  "file_ps_load_thumb");
  gimp_register_thumbnail_loader ("file_eps_load", "file_ps_load_thumb");
  gimp_register_thumbnail_loader ("file_pdf_load", "file_ps_load_thumb");

  gimp_install_procedure ("file_ps_save",
                          "save image as PostScript docuement",
                          "PostScript saving handles all image types except those with alpha channels.",
                          "Peter Kirchgessner <peter@kirchgessner.net>",
                          "Peter Kirchgessner",
                          dversio,
                          N_("PostScript document"),
                          "RGB, GRAY, INDEXED",
                          GIMP_PLUGIN,
                          G_N_ELEMENTS (save_args), 0,
                          save_args, NULL);

  gimp_register_file_handler_mime ("file_ps_save", "application/postscript");
  gimp_register_save_handler ("file_ps_save", "ps", "");

  gimp_install_procedure ("file_eps_save",
                          "save image as Encapsulated PostScript image",
                          "PostScript saving handles all image types except those with alpha channels.",
                          "Peter Kirchgessner <peter@kirchgessner.net>",
                          "Peter Kirchgessner",
                          dversio,
                          N_("Encapsulated PostScript image"),
                          "RGB, GRAY, INDEXED",
                          GIMP_PLUGIN,
                          G_N_ELEMENTS (save_args), 0,
                          save_args, NULL);

  gimp_register_file_handler_mime ("file_eps_save", "application/x-eps");
  gimp_register_save_handler ("file_eps_save", "eps", "");
}

static void
ps_set_save_size (PSSaveVals *vals,
                  gint32      image_ID)
{
  gdouble  xres, yres, factor, iw, ih;
  guint    width, height;
  GimpUnit unit;

  gimp_image_get_resolution (image_ID, &xres, &yres);
  if ((xres < 1e-5) || (yres < 1e-5))
    {
      xres = yres = 72.0;
    }
  /* Calculate size of image in inches */
  width  = gimp_image_width (image_ID);
  height = gimp_image_height (image_ID);
  iw = width  / xres;
  ih = height / yres;

  unit = gimp_image_get_unit (image_ID);
  factor = gimp_unit_get_factor (unit);
  if (factor == 0.0254 ||
      factor == 0.254 ||
      factor == 2.54 ||
      factor == 25.4)
    {
      vals->unit_mm = TRUE;
    }

  if (vals->unit_mm)
    {
      iw *= 25.4;
      ih *= 25.4;
    }
  vals->width  = iw;
  vals->height = ih;
}

static void
run (const gchar      *name,
     gint              nparams,
     const GimpParam  *param,
     gint             *nreturn_vals,
     GimpParam       **return_vals)
{
  static GimpParam  values[2];
  GimpRunMode       run_mode;
  GimpPDBStatusType status        = GIMP_PDB_SUCCESS;
  gint32            image_ID      = -1;
  gint32            drawable_ID   = -1;
  gint32            orig_image_ID = -1;
  GimpExportReturn  export        = GIMP_EXPORT_CANCEL;

  l_run_mode = run_mode = param[0].data.d_int32;

  INIT_I18N ();

  *nreturn_vals = 1;
  *return_vals  = values;

  values[0].type          = GIMP_PDB_STATUS;
  values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;

  if (strcmp (name, "file_ps_load")  == 0  ||
      strcmp (name, "file_eps_load") == 0  ||
      strcmp (name, "file_pdf_load") == 0)
    {
      switch (run_mode)
      {
        case GIMP_RUN_INTERACTIVE:
          /*  Possibly retrieve data  */
          gimp_get_data ("file_ps_load", &plvals);

          if (! load_dialog ())
          status = GIMP_PDB_CANCEL;
          break;

        case GIMP_RUN_NONINTERACTIVE:
          /*  Make sure all the arguments are there!  */
          if (nparams != 3)
            status = GIMP_PDB_CALLING_ERROR;
          else    /* Get additional interpretation arguments */
            gimp_get_data ("file_ps_load", &plvals);
          break;

        case GIMP_RUN_WITH_LAST_VALS:
          /* Possibly retrieve data */
          gimp_get_data ("file_ps_load", &plvals);
          break;

        default:
          break;
      }

      if (status == GIMP_PDB_SUCCESS)
      {
        check_load_vals ();
        image_ID = load_image (param[1].data.d_string);

        if (image_ID != -1)
          {
            *nreturn_vals = 2;
            values[1].type         = GIMP_PDB_IMAGE;
            values[1].data.d_image = image_ID;
          }
        else
          {
            status = GIMP_PDB_EXECUTION_ERROR;
          }
      }

      /*  Store plvals data  */
      if (status == GIMP_PDB_SUCCESS)
      gimp_set_data ("file_ps_load", &plvals, sizeof (PSLoadVals));
    }
  else if (strcmp (name, "file_ps_load_thumb") == 0)
    {
      if (nparams < 2)
        {
          status = GIMP_PDB_CALLING_ERROR;
        }
      else
        {
          gint size = param[1].data.d_int32;

          /*  We should look for an embedded preview but for now we
           *  just load the document at a small resolution and the
           *  first page only.
           */

          plvals.resolution = size / 4;
          plvals.width      = size;
          plvals.height     = size;
          strcpy (plvals.pages, "1");

          check_load_vals ();
          image_ID = load_image (param[0].data.d_string);

          if (image_ID != -1)
            {
            *nreturn_vals = 2;
            values[1].type         = GIMP_PDB_IMAGE;
            values[1].data.d_image = image_ID;
            }
          else
            {
              status = GIMP_PDB_EXECUTION_ERROR;
            }
        }
    }
  else if (strcmp (name, "file_ps_save")  == 0 ||
           strcmp (name, "file_eps_save") == 0)
    {
      psvals.eps = strcmp (name, "file_ps_save");

      image_ID = orig_image_ID = param[1].data.d_int32;
      drawable_ID = param[2].data.d_int32;

      /* eventually export the image */
      switch (run_mode)
      {
      case GIMP_RUN_INTERACTIVE:
      case GIMP_RUN_WITH_LAST_VALS:
        gimp_ui_init ("ps", FALSE);
        export = gimp_export_image (&image_ID, &drawable_ID,
                                      psvals.eps ? "EPS" : "PostScript",
                              (GIMP_EXPORT_CAN_HANDLE_RGB |
                               GIMP_EXPORT_CAN_HANDLE_GRAY |
                               GIMP_EXPORT_CAN_HANDLE_INDEXED));
        if (export == GIMP_EXPORT_CANCEL)
          {
            values[0].data.d_status = GIMP_PDB_CANCEL;
            return;
          }
        break;
      default:
        break;
      }

      switch (run_mode)
        {
        case GIMP_RUN_INTERACTIVE:
          /*  Possibly retrieve data  */
          gimp_get_data (name, &psvals);

          ps_set_save_size (&psvals, orig_image_ID);

          /*  First acquire information with a dialog  */
          if (! save_dialog ())
            status = GIMP_PDB_CANCEL;
          break;

        case GIMP_RUN_NONINTERACTIVE:
          /*  Make sure all the arguments are there!  */
          if (nparams != 15)
          {
            status = GIMP_PDB_CALLING_ERROR;
          }
          else
          {
            psvals.width        = param[5].data.d_float;
            psvals.height       = param[6].data.d_float;
            psvals.x_offset     = param[7].data.d_float;
            psvals.y_offset     = param[8].data.d_float;
            psvals.unit_mm      = (param[9].data.d_int32 != 0);
            psvals.keep_ratio   = (param[10].data.d_int32 != 0);
            psvals.rotate       = param[11].data.d_int32;
            psvals.eps          = param[12].data.d_int32;
            psvals.preview      = (param[13].data.d_int32 != 0);
            psvals.preview_size = param[13].data.d_int32;
            psvals.level        = param[14].data.d_int32;
          }
          break;

        case GIMP_RUN_WITH_LAST_VALS:
          /*  Possibly retrieve data  */
          gimp_get_data (name, &psvals);
          break;

        default:
          break;
        }

      if (status == GIMP_PDB_SUCCESS)
      {
        if ((psvals.width == 0.0) || (psvals.height == 0.0))
          ps_set_save_size (&psvals, orig_image_ID);

        check_save_vals ();
        if (save_image (param[3].data.d_string, image_ID, drawable_ID))
          {
            /*  Store psvals data  */
            gimp_set_data (name, &psvals, sizeof (PSSaveVals));
          }
        else
          {
            status = GIMP_PDB_EXECUTION_ERROR;
          }
      }

      if (export == GIMP_EXPORT_EXPORT)
      gimp_image_delete (image_ID);
    }
  else if (strcmp (name, "file_ps_load_setargs") == 0)
    {
      /*  Make sure all the arguments are there!  */
      if (nparams != 8)
      {
        status = GIMP_PDB_CALLING_ERROR;
      }
      else
      {
        plvals.resolution = param[0].data.d_int32;
        plvals.width      = param[1].data.d_int32;
        plvals.height     = param[2].data.d_int32;
        plvals.use_bbox   = param[3].data.d_int32;
        if (param[4].data.d_string != NULL)
          strncpy (plvals.pages, param[4].data.d_string,
                 sizeof (plvals.pages));
        else
          plvals.pages[0] = '\0';
        plvals.pages[sizeof (plvals.pages) - 1] = '\0';
        plvals.pnm_type      = param[5].data.d_int32;
        plvals.textalpha     = param[6].data.d_int32;
        plvals.graphicsalpha = param[7].data.d_int32;
        check_load_vals ();
        gimp_set_data ("file_ps_load", &plvals, sizeof (PSLoadVals));
      }
    }
  else
    {
      status = GIMP_PDB_CALLING_ERROR;
    }

  values[0].data.d_status = status;
}


static gint32
load_image (const gchar *filename)
{
  gint32 image_ID, *image_list, *nl;
  guint page_count;
  gint  ChildPid;
  FILE *ifp;
  char *temp;
  int  llx, lly, urx, ury;
  int  k, n_images, max_images, max_pagenum;
  int  is_epsf;

#ifdef PS_DEBUG
  g_print ("load_image:\n resolution = %d\n", plvals.resolution);
  g_print (" %dx%d pixels\n", plvals.width, plvals.height);
  g_print (" BoundingBox: %d\n", plvals.use_bbox);
  g_print (" Colouring: %d\n", plvals.pnm_type);
  g_print (" TextAlphaBits: %d\n", plvals.textalpha);
  g_print (" GraphicsAlphaBits: %d\n", plvals.graphicsalpha);
#endif

  /* Try to see if PostScript file is available */
  ifp = fopen (filename, "r");
  if (ifp == NULL)
    {
      g_message (_("Could not open '%s' for reading: %s"),
                 gimp_filename_to_utf8 (filename), g_strerror (errno));
      return -1;
    }
  fclose (ifp);

  temp = g_strdup_printf (_("Opening '%s'..."),
                          gimp_filename_to_utf8 (filename));
  gimp_progress_init (temp);
  g_free (temp);

  ifp = ps_open (filename, &plvals, &llx, &lly, &urx, &ury, &is_epsf,
                 &ChildPid);
  if (!ifp)
    {
      g_message (_("Could not interpret '%s'"),
                 gimp_filename_to_utf8 (filename));
      return -1;
    }

  image_list = g_new (gint32, 10);
  n_images = 0;
  max_images = 10;

  max_pagenum = 9999;  /* Try to get the maximum pagenumber to read */
  if (is_epsf)
    max_pagenum = 1;

  if (!page_in_list (plvals.pages, max_pagenum)) /* Is there a limit in list ? */
    {
      max_pagenum = -1;
      for (temp = plvals.pages; *temp != '\0'; temp++)
      {
        if ((*temp < '0') || (*temp > '9'))
            continue; /* Search next digit */
        sscanf (temp, "%d", &k);
        if (k > max_pagenum)
            max_pagenum = k;
        while ((*temp >= '0') && (*temp <= '9'))
            temp++;
        temp--;
      }

      if (max_pagenum < 1)
        max_pagenum = 9999;
    }

  /* Load all images */
  for (page_count = 1; page_count <= max_pagenum; page_count++)
    {
      if (page_in_list (plvals.pages, page_count))
      {
        image_ID = load_ps (filename, page_count, ifp, llx, lly, urx, ury);
        if (image_ID == -1)
            break;

        gimp_image_set_resolution (image_ID,
                             (double) plvals.resolution,
                             (double) plvals.resolution);

        if (n_images == max_images)
          {
            nl = (gint32 *) g_realloc (image_list,
                               (max_images+10)*sizeof (gint32));
            if (nl == NULL) break;
            image_list = nl;
            max_images += 10;
          }
        image_list[n_images++] = image_ID;
      }
      else  /* Skip an image */
      {
          image_ID = -1;
        if (! skip_ps (ifp))
            break;
      }
    }

  ps_close (ifp, ChildPid);

  /* Display images in reverse order. The last will be displayed by GIMP itself*/
  if (l_run_mode != GIMP_RUN_NONINTERACTIVE)
    {
      for (k = n_images-1; k >= 1; k--)
      gimp_display_new (image_list[k]);
    }

  image_ID = (n_images > 0) ? image_list[0] : -1;
  g_free (image_list);

  return image_ID;
}


static gint
save_image (const gchar *filename,
            gint32       image_ID,
            gint32       drawable_ID)
{
  FILE* ofp;
  GimpImageType drawable_type;
  gint retval;
  char *temp = ident; /* Just to satisfy lint/gcc */

  /* initialize */

  retval = 0;

  drawable_type = gimp_drawable_type (drawable_ID);

  /*  Make sure we're not saving an image with an alpha channel  */
  if (gimp_drawable_has_alpha (drawable_ID))
    {
      g_message (_("PostScript save cannot handle images with alpha channels"));
      return FALSE;
    }

  switch (drawable_type)
    {
    case GIMP_INDEXED_IMAGE:
    case GIMP_GRAY_IMAGE:
    case GIMP_RGB_IMAGE:
      break;
    default:
      g_message (_("Cannot operate on unknown image types."));
      return FALSE;
      break;
    }

  /* Open the output file. */
  ofp = fopen (filename, "wb");
  if (!ofp)
    {
      g_message (_("Could not open '%s' for writing: %s"),
                 gimp_filename_to_utf8 (filename), g_strerror (errno));
      return FALSE;
    }

  temp = g_strdup_printf (_("Saving '%s'..."),
                          gimp_filename_to_utf8 (filename));
  gimp_progress_init (temp);
  g_free (temp);

  save_ps_header (ofp, filename);

  if (drawable_type == GIMP_GRAY_IMAGE)
    retval = save_gray (ofp, image_ID, drawable_ID);
  else if (drawable_type == GIMP_INDEXED_IMAGE)
    retval = save_index (ofp, image_ID, drawable_ID);
  else if (drawable_type == GIMP_RGB_IMAGE)
    retval = save_rgb (ofp, image_ID, drawable_ID);

  save_ps_trailer (ofp);

  fclose (ofp);

  return retval;
}


/* Check (and correct) the load values plvals */
static void
check_load_vals (void)
{
  if (plvals.resolution < 5)
    plvals.resolution = 5;
  else if (plvals.resolution > 1440)
    plvals.resolution = 1440;

  if (plvals.width < 2)
    plvals.width = 2;
  if (plvals.height < 2)
    plvals.height = 2;
  plvals.use_bbox = (plvals.use_bbox != 0);
  if (plvals.pages[0] == '\0')
    strcpy (plvals.pages, "1-99");
  if ((plvals.pnm_type < 4) || (plvals.pnm_type > 7))
    plvals.pnm_type = 6;
  if (   (plvals.textalpha != 1) && (plvals.textalpha != 2)
      && (plvals.textalpha != 4))
    plvals.textalpha = 1;
  if (   (plvals.graphicsalpha != 1) && (plvals.graphicsalpha != 2)
      && (plvals.graphicsalpha != 4))
    plvals.graphicsalpha = 1;
}


/* Check (and correct) the save values psvals */
static void
check_save_vals (void)
{
  int i;

  i = psvals.rotate;
  if ((i != 0) && (i != 90) && (i != 180) && (i != 270))
    psvals.rotate = 90;
  if (psvals.preview_size <= 0)
    psvals.preview = FALSE;
}


/* Check if a page is in a given list */
static gint
page_in_list (gchar *list,
              guint  page_num)
{
  char tmplist[STR_LENGTH], *c0, *c1;
  int state, start_num, end_num;
#define READ_STARTNUM  0
#define READ_ENDNUM    1
#define CHK_LIST(a,b,c) {int low=(a),high=(b),swp; \
  if ((low>0) && (high>0)) { \
  if (low>high) {swp=low; low=high; high=swp;} \
  if ((low<=(c))&&(high>=(c))) return (1); } }

  if ((list == NULL) || (*list == '\0'))
    return 1;

  strncpy (tmplist, list, STR_LENGTH);
  tmplist[STR_LENGTH-1] = '\0';

  c0 = c1 = tmplist;
  while (*c1)    /* Remove all whitespace and break on unsupported characters */
    {
      if ((*c1 >= '0') && (*c1 <= '9'))
      {
        *(c0++) = *c1;
      }
      else if ((*c1 == '-') || (*c1 == ','))
      { /* Try to remove double occurances of these characters */
        if (c0 == tmplist)
          {
            *(c0++) = *c1;
          }
        else
          {
            if (*(c0-1) != *c1)
            *(c0++) = *c1;
          }
      }
      else
        break;

      c1++;
    }

  if (c0 == tmplist)
    return 1;

  *c0 = '\0';

  /* Now we have a comma separated list like 1-4-1,-3,1- */

  start_num = end_num = -1;
  state = READ_STARTNUM;
  for (c0 = tmplist; *c0 != '\0'; c0++)
    {
      switch (state)
      {
      case READ_STARTNUM:
        if (*c0 == ',')
          {
            if ((start_num > 0) && (start_num == (int)page_num))
                return -1;
            start_num = -1;
          }
        else if (*c0 == '-')
          {
            if (start_num < 0) start_num = 1;
            state = READ_ENDNUM;
          }
        else /* '0' - '9' */
          {
            if (start_num < 0) start_num = 0;
            start_num *= 10;
            start_num += *c0 - '0';
          }
        break;

      case READ_ENDNUM:
        if (*c0 == ',')
          {
            if (end_num < 0) end_num = 9999;
            CHK_LIST (start_num, end_num, (int)page_num);
            start_num = end_num = -1;
            state = READ_STARTNUM;
          }
        else if (*c0 == '-')
          {
            CHK_LIST (start_num, end_num, (int)page_num);
            start_num = end_num;
            end_num = -1;
          }
        else /* '0' - '9' */
          {
            if (end_num < 0) end_num = 0;
            end_num *= 10;
            end_num += *c0 - '0';
          }
        break;
      }
    }
  if (state == READ_STARTNUM)
    {
      if (start_num > 0)
      return (start_num == (int) page_num);
    }
  else
    {
      if (end_num < 0) end_num = 9999;
      CHK_LIST (start_num, end_num, (int)page_num);
    }

  return 0;
#undef CHK_LIST
}


/* A function like fgets, but treats single CR-character as line break. */
/* As a line break the newline-character is returned. */
static char *psfgets (char *s, int size, FILE *stream)

{
  int c;
  char *sptr = s;

  if (size <= 0)
    return NULL;

  if (size == 1)
    {
      *s = '\0';
      return NULL;
    }

  c = getc (stream);
  if (c == EOF)
    return NULL;

  for (;;)
    {
      /* At this point we have space in sptr for at least two characters */
      if (c == '\n')    /* Got end of line (UNIX line end) ? */
        {
          *(sptr++) = '\n';
          break;
        }
      else if (c == '\r')  /* Got a carriage return. Check next charcater */
        {
          c = getc (stream);
          if ((c == EOF) || (c == '\n')) /* EOF or DOS line end ? */
            {
              *(sptr++) = '\n';  /* Return UNIX line end */
              break;
            }
          else  /* Single carriage return. Return UNIX line end. */
            {
              ungetc (c, stream);  /* Save the extra character */
              *(sptr++) = '\n';
              break;
            }
        }
      else   /* no line end character */
        {
          *(sptr++) = (char)c;
          size--;
        }
      if (size == 1)
        break;  /* Only space for the nul-character ? */

      c = getc (stream);
      if (c == EOF)
        break;
    }

  *sptr = '\0';

  return s;
}


/* Get the BoundingBox of a PostScript file. On success, 0 is returned. */
/* On failure, -1 is returned. */
static gint
get_bbox (const gchar *filename,
          gint        *x0,
          gint        *y0,
          gint        *x1,
          gint        *y1)
{
  char line[1024], *src;
  FILE *ifp;
  int retval = -1;

  ifp = fopen (filename, "rb");
  if (ifp == NULL)
    return -1;

  for (;;)
    {
      if (psfgets (line, sizeof (line)-1, ifp) == NULL) break;
      if ((line[0] != '%') || (line[1] != '%')) continue;
      src = &(line[2]);
      while ((*src == ' ') || (*src == '\t')) src++;
      if (strncmp (src, "BoundingBox", 11) != 0) continue;
      src += 11;
      while ((*src == ' ') || (*src == '\t') || (*src == ':')) src++;
      if (strncmp (src, "(atend)", 7) == 0) continue;
      if (sscanf (src, "%d%d%d%d", x0, y0, x1, y1) == 4)
      retval = 0;
      break;
    }
  fclose (ifp);

  return retval;
}

static gchar *pnmfile;

/* Open the PostScript file. On failure, NULL is returned. */
/* The filepointer returned will give a PNM-file generated */
/* by the PostScript-interpreter. */
static FILE *
ps_open (const gchar      *filename,
         const PSLoadVals *loadopt,
         gint             *llx,
         gint             *lly,
         gint             *urx,
         gint             *ury,
         gint             *is_epsf,
         gint             *ChildPidPtr)
{
  char *gs, *driver;
  GPtrArray *cmdA;
  gchar **pcmdA;
  FILE *fd_popen = NULL;
  FILE *eps_file;
  int width, height, resolution;
  int x0, y0, x1, y1;
  int offx = 0, offy = 0;
  int is_pdf, maybe_epsf = 0;
  GError *Gerr = NULL;
  GSpawnFlags Gflags;
#ifndef USE_REAL_OUTPUTFILE
  gint ChildStdout;
#endif

  *ChildPidPtr = 0;
  resolution = loadopt->resolution;
  *llx = *lly = 0;
  width = loadopt->width;
  height = loadopt->height;
  *urx = width - 1;
  *ury = height - 1;

  /* Check if the file is a PDF. For PDF, we cant set geometry */
  is_pdf = 0;

  /* Check if it is a EPS-file */
  *is_epsf = 0;

  eps_file = fopen (filename, "rb");

  if (eps_file != NULL)
    {
      char hdr[512];

      fread (hdr, 1, sizeof(hdr), eps_file);
      is_pdf = (strncmp (hdr, "%PDF", 4) == 0);

      if (!is_pdf)  /* Check for EPSF */
        {
          char *adobe, *epsf;
          int ds = 0;
          static unsigned char doseps[5] = { 0xc5, 0xd0, 0xd3, 0xc6, 0 };

          hdr[sizeof(hdr)-1] = '\0';
          adobe = strstr (hdr, "PS-Adobe-");
          epsf = strstr (hdr, "EPSF-");

          if ((adobe != NULL) && (epsf != NULL))
            ds = epsf - adobe;

          *is_epsf = ((ds >= 11) && (ds <= 15));

          /* Illustrator uses negative values in BoundingBox without marking */
          /* files as EPSF. Try to handle that. */
          maybe_epsf =
            (strstr (hdr, "%%Creator: Adobe Illustrator(R) 8.0") != 0);

          /* Check DOS EPS binary file */
          if ((!*is_epsf) && (strncmp (hdr, (char *)doseps, 4) == 0))
            *is_epsf = 1;
        }

      fclose (eps_file);
    }

  if ((!is_pdf) && (loadopt->use_bbox))    /* Try the BoundingBox ? */
    {
      if (get_bbox (filename, &x0, &y0, &x1, &y1) == 0)
        {
          if (maybe_epsf && ((x0 < 0) || (y0 < 0)))
            *is_epsf = 1;

          if (*is_epsf)  /* Handle negative BoundingBox for EPSF */
            {
              offx = -x0; x1 += offx; x0 += offx;
              offy = -y0; y1 += offy; y0 += offy;
            }
          if ((x0 >= 0) && (y0 >= 0) && (x1 > x0) && (y1 > y0))
            {
               *llx = (int)((x0/72.0) * resolution + 0.0001);
               *lly = (int)((y0/72.0) * resolution + 0.0001);
               /* Use upper bbox values as image size */
               width = (int)((x1/72.0) * resolution + 0.5);
               height = (int)((y1/72.0) * resolution + 0.5);
               /* Pixel coordinates must be one less */
               *urx = width - 1;
               *ury = height - 1;
               if (*urx < *llx) *urx = *llx;
               if (*ury < *lly) *ury = *lly;
            }
        }
    }

  if (loadopt->pnm_type == 4)
    driver = "pbmraw";
  else if (loadopt->pnm_type == 5)
    driver = "pgmraw";
  else if (loadopt->pnm_type == 7)
    driver = "pnmraw";
  else
    driver = "ppmraw";

#ifdef USE_REAL_OUTPUTFILE
  /* For instance, the Win32 port of ghostscript doesn't work correctly when
   * using standard output as output file.
   * Thus, use a real output file.
   */
  pnmfile = g_strdup_printf ("%s" G_DIR_SEPARATOR_S "p%lx",
                             g_get_tmp_dir (), (gulong) getpid ());
#else
  pnmfile = "-";
#endif

  gs = getenv ("GS_PROG");
  if (gs == NULL)
    gs = DEFAULT_GS_PROG;

  /* Build command array */
  cmdA = g_ptr_array_new ();

  g_ptr_array_add (cmdA, g_strdup (gs));
  g_ptr_array_add (cmdA, g_strdup_printf ("-sDEVICE=%s", driver));
  g_ptr_array_add (cmdA, g_strdup_printf ("-r%d", resolution));

  if (is_pdf)
    {
      /* Acrobat Reader honors CropBox over MediaBox, so let's match that
       * behavior.
       */
      g_ptr_array_add (cmdA, g_strdup ("-dUseCropBox"));
    }
  else
    {
      /* For PDF, we can't set geometry */
      g_ptr_array_add (cmdA, g_strdup_printf ("-g%dx%d", width, height));
    }

  /* Antialiasing not available for PBM-device */
  if ((loadopt->pnm_type != 4) && (loadopt->textalpha != 1))
    g_ptr_array_add (cmdA, g_strdup_printf ("-dTextAlphaBits=%d",
                                            loadopt->textalpha));
  if ((loadopt->pnm_type != 4) && (loadopt->graphicsalpha != 1))
    g_ptr_array_add (cmdA, g_strdup_printf ("-dGraphicsAlphaBits=%d",
                                            loadopt->graphicsalpha));
  g_ptr_array_add (cmdA, g_strdup ("-q"));
  g_ptr_array_add (cmdA, g_strdup ("-dBATCH"));
  g_ptr_array_add (cmdA, g_strdup ("-dNOPAUSE"));

  /* If no additional options specified, use at least -dSAFER */
  if (getenv ("GS_OPTIONS") == NULL)
    g_ptr_array_add (cmdA, g_strdup ("-dSAFER"));

  /* Output file name */
  g_ptr_array_add (cmdA, g_strdup_printf ("-sOutputFile=%s", pnmfile));

  /* Offset command for gs to get image part with negative x/y-coord. */
  if ((offx != 0) || (offy != 0))
    {
      g_ptr_array_add (cmdA, g_strdup ("-c"));
      g_ptr_array_add (cmdA, g_strdup_printf ("%d", offx));
      g_ptr_array_add (cmdA, g_strdup_printf ("%d", offy));
      g_ptr_array_add (cmdA, g_strdup ("translate"));
    }

  /* input file name */
  g_ptr_array_add (cmdA, g_strdup ("-f"));
  g_ptr_array_add (cmdA, g_strdup (filename));

  if (*is_epsf)
    {
      g_ptr_array_add (cmdA, g_strdup ("-c"));
      g_ptr_array_add (cmdA, g_strdup ("showpage"));
    }

  g_ptr_array_add (cmdA, g_strdup ("-c"));
  g_ptr_array_add (cmdA, g_strdup ("quit"));
  g_ptr_array_add (cmdA, NULL);

  pcmdA = (gchar **) cmdA->pdata;

#ifdef PS_DEBUG
  {
    gchar **p = pcmdA;
    g_print ("Starting command:\n");

    while (*p)
      {
        g_print ("%s\n", *p);
        p++;
      }
  }
#endif

  /* Start the command */
#ifndef USE_REAL_OUTPUTFILE
  Gflags = G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD;

  if ( !g_spawn_async_with_pipes (NULL,         /* working dir */
                                  pcmdA,        /* command array */
                                  NULL,         /* environment */
                                  Gflags,       /* Flags */
                                  NULL, NULL,   /* Child setup and userdata */
                                  ChildPidPtr,
                                  NULL,         /* stdin */
                                  &ChildStdout,
                                  NULL,         /* stderr */
                                  &Gerr) )
    {
      g_message (_("Error starting ghostscript (%s)"), Gerr->message);
      g_error_free (Gerr);

      *ChildPidPtr = 0;

      goto out;
    }

#ifdef PS_DEBUG
  g_print ("Ghostscript started with pid=%d\n", *ChildPidPtr);
#endif

  /* Get a file pointer from the descriptor */
  fd_popen = fdopen (ChildStdout, "rb");

#else

  /* Use a real outputfile. Wait until ghostscript has finished */
  Gflags = G_SPAWN_SEARCH_PATH;

  if ( !g_spawn_sync (NULL,       /* working dir */
                      pcmdA,      /* command array */
                      NULL,       /* environment */
                      Gflags,     /* Flags */
                      NULL, NULL, /* Child setup and userdata */
                      NULL,       /* stdout */
                      NULL,       /* stderr */
                      NULL,       /* exit code */
                      &Gerr) )
    {
      g_message (_("Error starting ghostscript: %s"), Gerr->message);
      g_error_free (Gerr);

      unlink (pnmfile);

      goto out;
    }

  /* Don't care about exit status of ghostscript. */
  /* Just try to read what it wrote. */

  fd_popen = fopen (pnmfile, "rb");

#endif

out:
  g_ptr_array_free (cmdA, FALSE);
  g_strfreev (pcmdA);

  return fd_popen;
}


/* Close the PNM-File of the PostScript interpreter */
static void
ps_close (FILE *ifp, gint ChildPid)
{

#ifndef USE_REAL_OUTPUTFILE
  int status;
  pid_t RetVal;

  /* Enabling the code below causes us to read the pipe until EOF even
   * if we dont want all images. Should be enabled if people report that
   * the gs subprocess does not finish. For now it is disabled since it
   * causes a significant slowdown.
   */
#ifdef EMPTY_PIPE
  guchar buf[8192];

#ifdef PS_DEBUG
  g_print ("Reading rest from pipe\n");
#endif

  while (fread (buf, sizeof (buf), 1, ifp));
#endif  /*  EMPTY_PIPE  */

  /* Finish reading from pipe. */
  fclose (ifp);

  /* Wait for the child to exit */
  if (ChildPid)
    {
#ifdef PS_DEBUG
    g_print ("Waiting for %d to finish\n", (int)ChildPid);
#endif

    RetVal = waitpid (ChildPid, &status, 0);

#ifdef PS_DEBUG
    if (RetVal == -1)
      g_print ("waitpid() failed\n");
    else
      g_print ("child has finished\n");
#endif
    }

#else  /*  USE_REAL_OUTPUTFILE  */
 /* If a real outputfile was used, close the file and remove it. */
  fclose (ifp);
  unlink (pnmfile);
#endif
}


/* Read the header of a raw PNM-file and return type (4-6) or -1 on failure */
static gint
read_pnmraw_type (FILE *ifp,
                  gint *width,
                  gint *height,
                  gint *maxval)
{
  register int frst, scnd, thrd;
  gint pnmtype;
  char line[1024];

  /* GhostScript may write some informational messages infront of the header. */
  /* We are just looking at a Px\n in the input stream. */
  frst = getc (ifp);
  scnd = getc (ifp);
  thrd = getc (ifp);
  for (;;)
    {
      if (thrd == EOF) return -1;
#if defined (WIN32)
      if (thrd == '\r') thrd = getc (ifp);
#endif
      if ((thrd == '\n') && (frst == 'P') && (scnd >= '1') && (scnd <= '6'))
      break;
      frst = scnd;
      scnd = thrd;
      thrd = getc (ifp);
    }
  pnmtype = scnd - '0';
  /* We dont use the ASCII-versions */
  if ((pnmtype >= 1) && (pnmtype <= 3))
    return -1;

  /* Read width/height */
  for (;;)
    {
      if (fgets (line, sizeof (line)-1, ifp) == NULL)
        return -1;
      if (line[0] != '#')
        break;
    }
  if (sscanf (line, "%d%d", width, height) != 2)
    return -1;

  *maxval = 255;

  if (pnmtype != 4)  /* Read maxval */
    {
      for (;;)
      {
        if (fgets (line, sizeof (line)-1, ifp) == NULL)
            return -1;
        if (line[0] != '#')
            break;
      }
      if (sscanf (line, "%d", maxval) != 1)
        return -1;
    }

  return pnmtype;
}


/* Create an image. Sets layer_ID, drawable and rgn. Returns image_ID */
static gint32
create_new_image (const gchar        *filename,
                  guint               pagenum,
                  guint               width,
                  guint               height,
                  GimpImageBaseType   type,
                  gint32             *layer_ID,
                  GimpDrawable      **drawable,
                  GimpPixelRgn       *pixel_rgn)
{
  gint32         image_ID;
  GimpImageType  gdtype;

  if (type == GIMP_GRAY) gdtype = GIMP_GRAY_IMAGE;
  else if (type == GIMP_INDEXED) gdtype = GIMP_INDEXED_IMAGE;
  else gdtype = GIMP_RGB_IMAGE;

  image_ID = gimp_image_new (width, height, type);

  if (pagenum > 1)
    {
      gchar *tmp;

      tmp = g_strdup_printf ("%s-pg%ld", filename, (long)pagenum);
      gimp_image_set_filename (image_ID, tmp);
      g_free (tmp);
    }
  else
    {
      gimp_image_set_filename (image_ID, filename);
    }

  *layer_ID = gimp_layer_new (image_ID, "Background", width, height,
                        gdtype, 100, GIMP_NORMAL_MODE);
  gimp_image_add_layer (image_ID, *layer_ID, 0);

  *drawable = gimp_drawable_get (*layer_ID);
  gimp_pixel_rgn_init (pixel_rgn, *drawable, 0, 0, (*drawable)->width,
                   (*drawable)->height, TRUE, FALSE);

  return image_ID;
}


/* Skip PNM image generated from PostScript file. */
/* Return TRUE on success, FALSE otherwise.       */
static gboolean
skip_ps (FILE *ifp)
{
  guchar  buf[8192];
  gsize   len;
  gint    pnmtype, width, height, maxval, bpl;

  pnmtype = read_pnmraw_type (ifp, &width, &height, &maxval);

  if (pnmtype == 4)    /* Portable bitmap */
    bpl = (width + 7) / 8;
  else if (pnmtype == 5)
    bpl = width;
  else if (pnmtype == 6)
    bpl = width * 3;
  else
    return FALSE;

  len = bpl * height;
  while (len)
    {
      gsize  bytes = fread (buf, 1, MIN (len, sizeof (buf)), ifp);

      if (bytes < MIN (len, sizeof (buf)))
        return FALSE;

      len -= bytes;
    }

  return TRUE;
}


/* Load PNM image generated from PostScript file */
static gint32
load_ps (const gchar *filename,
         guint        pagenum,
         FILE        *ifp,
         gint         llx,
         gint         lly,
         gint         urx,
         gint         ury)
{
  register guchar *dest;
  guchar *data, *bitline = NULL, *byteline = NULL, *byteptr, *temp;
  guchar bit2byte[256*8];
  int width, height, tile_height, scan_lines, total_scan_lines;
  int image_width, image_height;
  int skip_left, skip_bottom;
  int i, j, pnmtype, maxval, bpp, nread;
  GimpImageBaseType imagetype;
  gint32 layer_ID, image_ID;
  GimpPixelRgn pixel_rgn;
  GimpDrawable *drawable;
  int err = 0, e;

  pnmtype = read_pnmraw_type (ifp, &width, &height, &maxval);

  if ((width == urx+1) && (height == ury+1))  /* gs respected BoundingBox ? */
    {
      skip_left = llx;    skip_bottom = lly;
      image_width = width - skip_left;
      image_height = height - skip_bottom;
    }
  else
    {
      skip_left = skip_bottom = 0;
      image_width = width;
      image_height = height;
    }
  if (pnmtype == 4)   /* Portable Bitmap */
    {
      imagetype = GIMP_INDEXED;
      nread = (width+7)/8;
      bpp = 1;
      bitline = (guchar *)g_malloc (nread);
      byteline = (guchar *)g_malloc (nread*8);

      /* Get an array for mapping 8 bits in a byte to 8 bytes */
      temp = bit2byte;
      for (j = 0; j < 256; j++)
      for (i = 7; i >= 0; i--)
        *(temp++) = ((j & (1 << i)) != 0);
    }
  else if (pnmtype == 5)  /* Portable Greymap */
    {
      imagetype = GIMP_GRAY;
      nread = width;
      bpp = 1;
      byteline = (unsigned char *)g_malloc (nread);
    }
  else if (pnmtype == 6)  /* Portable Pixmap */
    {
      imagetype = GIMP_RGB;
      nread = width * 3;
      bpp = 3;
      byteline = (guchar *)g_malloc (nread);
    }
  else
    return -1;

  image_ID = create_new_image (filename, pagenum,
                         image_width, image_height, imagetype,
                         &layer_ID, &drawable, &pixel_rgn);

  tile_height = gimp_tile_height ();
  data = g_malloc (tile_height * image_width * bpp);

  dest = data;
  total_scan_lines = scan_lines = 0;

  if (pnmtype == 4)   /* Read bitimage ? Must be mapped to indexed */
    {static unsigned char BWColorMap[2*3] = { 255, 255, 255, 0, 0, 0 };

    gimp_image_set_colormap (image_ID, BWColorMap, 2);

    for (i = 0; i < height; i++)
      {
      e = (fread (bitline, 1, nread, ifp) != nread);
      if (total_scan_lines >= image_height) continue;
      err |= e;
      if (err) break;

      j = width;      /* Map 1 byte of bitimage to 8 bytes of indexed image */
      temp = bitline;
      byteptr = byteline;
      while (j >= 8)
        {
          memcpy (byteptr, bit2byte + *(temp++)*8, 8);
          byteptr += 8;
          j -= 8;
        }
      if (j > 0)
        memcpy (byteptr, bit2byte + *temp*8, j);

      memcpy (dest, byteline+skip_left, image_width);
      dest += image_width;
      scan_lines++;
      total_scan_lines++;

      if ((i % 20) == 0)
        gimp_progress_update ((double)(i+1) / (double)image_height);

      if ((scan_lines == tile_height) || ((i+1) == image_height))
        {
          gimp_pixel_rgn_set_rect (&pixel_rgn, data, 0, i-scan_lines+1,
                             image_width, scan_lines);
          scan_lines = 0;
          dest = data;
        }
      if (err) break;
      }
    }
  else   /* Read gray/rgb-image */
    {
      for (i = 0; i < height; i++)
      {
        e = (fread (byteline, bpp, width, ifp) != width);
        if (total_scan_lines >= image_height) continue;
        err |= e;
        if (err) break;

        memcpy (dest, byteline+skip_left*bpp, image_width*bpp);
        dest += image_width*bpp;
        scan_lines++;
        total_scan_lines++;

        if ((i % 20) == 0)
          gimp_progress_update ((double)(i+1) / (double)image_height);

        if ((scan_lines == tile_height) || ((i+1) == image_height))
          {
            gimp_pixel_rgn_set_rect (&pixel_rgn, data, 0, i-scan_lines+1,
                               image_width, scan_lines);
            scan_lines = 0;
            dest = data;
          }
        if (err) break;
      }
    }

  g_free (data);
  if (byteline) g_free (byteline);
  if (bitline) g_free (bitline);

  if (err)
    g_message ("EOF encountered on reading");

  gimp_drawable_flush (drawable);

  return (err ? -1 : image_ID);
}


/* Write out the PostScript file header */
static void save_ps_header (FILE        *ofp,
                            const gchar *filename)
{
  gchar  *basename = g_path_get_basename (filename);
  time_t  cutime   = time (NULL);

  fprintf (ofp, "%%!PS-Adobe-3.0%s\n", psvals.eps ? " EPSF-3.0" : "");
  fprintf (ofp, "%%%%Creator: GIMP PostScript file plugin V %4.2f \
by Peter Kirchgessner\n", VERSIO);
  fprintf (ofp, "%%%%Title: %s\n", basename);
  fprintf (ofp, "%%%%CreationDate: %s", ctime (&cutime));
  fprintf (ofp, "%%%%DocumentData: Clean7Bit\n");
  if (psvals.eps || (psvals.level > 1)) fprintf (ofp,"%%%%LanguageLevel: 2\n");
  fprintf (ofp, "%%%%Pages: 1\n");

  g_free (basename);
}


/* Write out transformation for image */
static void
save_ps_setup (FILE   *ofp,
               gint32  drawable_ID,
               gint    width,
               gint    height,
               gint    bpp)
{
  double x_offset, y_offset, x_size, y_size;
  double urx, ury;
  double x_scale, y_scale;
  double width_inch, height_inch;
  double f1, f2, dx, dy;
  int xtrans, ytrans;
  int i_urx, i_ury;
  char tmpbuf[G_ASCII_DTOSTR_BUF_SIZE];

  /* initialize */

  dx = 0.0;
  dy = 0.0;

  x_offset = psvals.x_offset;
  y_offset = psvals.y_offset;
  width_inch = fabs (psvals.width);
  height_inch = fabs (psvals.height);

  if (psvals.unit_mm)
    {
      x_offset /= 25.4; y_offset /= 25.4;
      width_inch /= 25.4; height_inch /= 25.4;
    }
  if (psvals.keep_ratio)   /* Proportions to keep ? */
    {                        /* Fit the image into the allowed size */
      f1 = width_inch / width;
      f2 = height_inch / height;
      if (f1 < f2)
      height_inch = width_inch * (double)(height)/(double)(width);
      else
      width_inch = fabs (height_inch) * (double)(width)/(double)(height);
    }
  if ((psvals.rotate == 0) || (psvals.rotate == 180))
    {
      x_size = width_inch; y_size = height_inch;
    }
  else
  {
    y_size = width_inch; x_size = height_inch;
  }

  /* Round up upper right corner only for non-integer values */
  urx = (x_offset+x_size)*72.0;
  ury = (y_offset+y_size)*72.0;
  i_urx = (int)urx;
  i_ury = (int)ury;
  if (urx != (double)i_urx) i_urx++;  /* Check for non-integer value */
  if (ury != (double)i_ury) i_ury++;

  fprintf (ofp, "%%%%BoundingBox: %d %d %d %d\n",(int)(x_offset*72.0),
           (int)(y_offset*72.0), i_urx, i_ury);
  fprintf (ofp, "%%%%EndComments\n");

  if (psvals.preview && (psvals.preview_size > 0))
    {
      save_ps_preview (ofp, drawable_ID);
    }

  fprintf (ofp, "%%%%BeginProlog\n");
  fprintf (ofp, "%% Use own dictionary to avoid conflicts\n");
  fprintf (ofp, "10 dict begin\n");
  fprintf (ofp, "%%%%EndProlog\n");
  fprintf (ofp, "%%%%Page: 1 1\n");
  fprintf (ofp, "%% Translate for offset\n");
  fprintf (ofp, "%s", g_ascii_dtostr (tmpbuf, sizeof (tmpbuf), x_offset*72.0));
  fprintf (ofp, " %s translate\n", g_ascii_dtostr (tmpbuf, sizeof (tmpbuf), y_offset*72.0));

  /* Calculate translation to startpoint of first scanline */
  switch (psvals.rotate)
    {
    case   0: dx = 0.0; dy = y_size*72.0;
      break;
    case  90: dx = dy = 0.0;
      x_scale = 72.0 * width_inch;
      y_scale = -72.0 * height_inch;
      break;
    case 180: dx = x_size*72.0; dy = 0.0;
      break;
    case 270: dx = x_size*72.0; dy = y_size*72.0;
      break;
    }
  if ((dx != 0.0) || (dy != 0.0))
    {
      fprintf (ofp, "%% Translate to begin of first scanline\n");
      fprintf (ofp, "%s", g_ascii_dtostr (tmpbuf, sizeof (tmpbuf), dx));
      fprintf (ofp, " %s translate\n", g_ascii_dtostr (tmpbuf, sizeof (tmpbuf), dy));
    }
  if (psvals.rotate)
    fprintf (ofp, "%d rotate\n", (int)psvals.rotate);
  fprintf (ofp, "%s", g_ascii_dtostr (tmpbuf, sizeof (tmpbuf), 72.0*width_inch));
  fprintf (ofp, " %s scale\n", g_ascii_dtostr (tmpbuf, sizeof (tmpbuf), -72.0*height_inch));

  /* Write the PostScript procedures to read the image */
  if (psvals.level <= 1)
  {
    fprintf (ofp, "%% Variable to keep one line of raster data\n");
    if (bpp == 1)
      fprintf (ofp, "/scanline %d string def\n", (width+7)/8);
    else
      fprintf (ofp, "/scanline %d %d mul string def\n", width, bpp/8);
  }
  fprintf (ofp, "%% Image geometry\n%d %d %d\n", width, height,
           (bpp == 1) ? 1 : 8);
  fprintf (ofp, "%% Transformation matrix\n");
  xtrans = ytrans = 0;
  if (psvals.width < 0.0) { width = -width; xtrans = -width; }
  if (psvals.height < 0.0) { height = -height; ytrans = -height; }
  fprintf (ofp, "[ %d 0 0 %d %d %d ]\n", width, height, xtrans, ytrans);
}


static void
save_ps_trailer (FILE *ofp)
{
  fprintf (ofp, "%%%%Trailer\n");
  fprintf (ofp, "end\n%%%%EOF\n");
}

/* Do a Floyd-Steinberg dithering on a greyscale scanline. */
/* linecount must keep the counter for the actual scanline (0, 1, 2, ...). */
/* If linecount is less than zero, all used memory is freed. */

static void
dither_grey (guchar *grey,
             guchar *bw,
             gint    npix,
             gint    linecount)
{
  register guchar *greyptr, *bwptr, mask;
  register int *fse;
  int x, greyval, fse_inline;
  static int *fs_error = NULL;
  static int do_init_arrays = 1;
  static int limit_array[1278];
  static int east_error[256],seast_error[256],south_error[256],swest_error[256];
  int *limit = &(limit_array[512]);

  if (linecount <= 0)
    {
      if (fs_error) g_free (fs_error-1);
      if (linecount < 0) return;
      fs_error = g_new (int, npix+2);
      memset ((char *)fs_error, 0, (npix+2)*sizeof (int));
      fs_error++;

      /* Initialize some arrays that speed up dithering */
      if (do_init_arrays)
      {
        do_init_arrays = 0;
        for (x = -511; x <= 766; x++)
          limit[x] = (x < 0) ? 0 : ((x > 255) ? 255 : x);
        for (greyval = 0; greyval < 256; greyval++)
          {
            east_error[greyval] = (greyval < 128) ? ((greyval * 79) >> 8)
            : (((greyval-255)*79) >> 8);
            seast_error[greyval] = (greyval < 128) ? ((greyval * 34) >> 8)
            : (((greyval-255)*34) >> 8);
            south_error[greyval] = (greyval < 128) ? ((greyval * 56) >> 8)
            : (((greyval-255)*56) >> 8);
            swest_error[greyval] = (greyval < 128) ? ((greyval * 12) >> 8)
            : (((greyval-255)*12) >> 8);
          }
      }
    }
  if (fs_error == NULL) return;

  memset (bw, 0, (npix+7)/8); /* Initialize with white */

  greyptr = grey;
  bwptr = bw;
  mask = 0x80;
  fse_inline = fs_error[0];
  for (x = 0, fse = fs_error; x < npix; x++, fse++)
    {
      greyval = limit[*(greyptr++) + fse_inline];  /* 0 <= greyval <= 255 */
      if (greyval < 128) *bwptr |= mask;  /* Set a black pixel */

      /* Error distribution */
      fse_inline = east_error[greyval] + fse[1];
      fse[1] = seast_error[greyval];
      fse[0] += south_error[greyval];
      fse[-1] += swest_error[greyval];

      mask >>= 1;   /* Get mask for next b/w-pixel */
      if (!mask)
      {
        mask = 0x80;
        bwptr++;
      }
    }
}

/* Write a device independant screen preview */
static void
save_ps_preview (FILE   *ofp,
                 gint32  drawable_ID)
{
  register guchar *bwptr, *greyptr;
  GimpImageType drawable_type;
  GimpDrawable *drawable;
  GimpPixelRgn src_rgn;
  int width, height, x, y, nbsl, out_count;
  int nchar_pl = 72, src_y;
  double f1, f2;
  guchar *grey, *bw, *src_row, *src_ptr;
  guchar *cmap;
  gint ncols, cind;

  if (psvals.preview_size <= 0) return;

  drawable = gimp_drawable_get (drawable_ID);
  drawable_type = gimp_drawable_type (drawable_ID);

  /* Calculate size of preview */
  if (   (drawable->width <= psvals.preview_size)
       && (drawable->height <= psvals.preview_size))
    {
      width = drawable->width;
      height = drawable->height;
    }
  else
    {
      f1 = (double)psvals.preview_size / (double)drawable->width;
      f2 = (double)psvals.preview_size / (double)drawable->height;
      if (f1 < f2)
      {
        width = psvals.preview_size;
        height = drawable->height * f1;
        if (height <= 0) height = 1;
      }
      else
      {
        height = psvals.preview_size;
        width = drawable->width * f1;
        if (width <= 0) width = 1;
      }
    }

  nbsl = (width+7)/8;  /* Number of bytes per scanline in bitmap */

  grey = (guchar *)g_malloc (width);
  bw = (guchar *)g_malloc (nbsl);
  src_row = (guchar *)g_malloc (drawable->width * drawable->bpp);

  fprintf (ofp, "%%%%BeginPreview: %d %d 1 %d\n", width, height,
         ((nbsl*2+nchar_pl-1)/nchar_pl)*height);

  gimp_pixel_rgn_init (&src_rgn, drawable, 0, 0, drawable->width,
                   drawable->height, FALSE, FALSE);

  cmap = NULL;     /* Check if we need a colour table */
  if (gimp_drawable_type (drawable_ID) == GIMP_INDEXED_IMAGE)
    cmap = (guchar *)
      gimp_image_get_colormap (gimp_drawable_get_image (drawable_ID), &ncols);

  for (y = 0; y < height; y++)
    {
      /* Get a scanline from the input image and scale it to the desired width */
      src_y = (y * drawable->height) / height;
      gimp_pixel_rgn_get_row (&src_rgn, src_row, 0, src_y, drawable->width);

      greyptr = grey;
      if (drawable->bpp == 3)   /* RGB-image */
      {
        for (x = 0; x < width; x++)
          {                       /* Convert to grey */
            src_ptr = src_row + ((x * drawable->width) / width) * 3;
            *(greyptr++) = (3*src_ptr[0] + 6*src_ptr[1] + src_ptr[2]) / 10;
          }
      }
      else if (cmap)    /* Indexed image */
      {
        for (x = 0; x < width; x++)
          {
            src_ptr = src_row + ((x * drawable->width) / width);
            cind = *src_ptr;   /* Get colour index and convert to grey */
            src_ptr = (cind >= ncols) ? cmap : (cmap + 3*cind);
            *(greyptr++) = (3*src_ptr[0] + 6*src_ptr[1] + src_ptr[2]) / 10;
          }
      }
      else             /* Grey image */
      {
        for (x = 0; x < width; x++)
          *(greyptr++) = *(src_row + ((x * drawable->width) / width));
      }

      /* Now we have a greyscale line for the desired width. */
      /* Dither it to b/w */
      dither_grey (grey, bw, width, y);

      /* Write out the b/w line */
      out_count = 0;
      bwptr = bw;
      for (x = 0; x < nbsl; x++)
      {
        if (out_count == 0) fprintf (ofp, "%% ");
        fprintf (ofp, "%02x", *(bwptr++));
        out_count += 2;
        if (out_count >= nchar_pl)
          {
            fprintf (ofp, "\n");
            out_count = 0;
          }
      }
      if (out_count != 0)
      fprintf (ofp, "\n");

      if ((y % 20) == 0)
      gimp_progress_update ((double)(y) / (double)height);
    }

  fprintf (ofp, "%%%%EndPreview\n");

  dither_grey (grey, bw, width, -1);
  g_free (src_row);
  g_free (bw);
  g_free (grey);

  gimp_drawable_detach (drawable);
}

static gint
save_gray  (FILE   *ofp,
            gint32  image_ID,
            gint32  drawable_ID)
{
  int height, width, i, j;
  int tile_height;
  unsigned char *data, *src;
  unsigned char *packb = NULL;
  GimpPixelRgn pixel_rgn;
  GimpDrawable *drawable;
  GimpImageType drawable_type;
  static char *hex = "0123456789abcdef";
  int level2 = (psvals.level > 1);

  drawable = gimp_drawable_get (drawable_ID);
  drawable_type = gimp_drawable_type (drawable_ID);
  width = drawable->width;
  height = drawable->height;
  tile_height = gimp_tile_height ();
  gimp_pixel_rgn_init (&pixel_rgn, drawable, 0, 0, width, height, FALSE, FALSE);

  /* allocate a buffer for retrieving information from the pixel region  */
  src = data = (guchar *)g_malloc (tile_height * width * drawable->bpp);

  /* Set up transformation in PostScript */
  save_ps_setup (ofp, drawable_ID, width, height, 1*8);

  /* Write read image procedure */
  if (!level2)
  {
    fprintf (ofp, "{ currentfile scanline readhexstring pop }\n");
  }
  else
  {
    fprintf (ofp,"currentfile /ASCII85Decode filter /RunLengthDecode filter\n");
    ascii85_init ();
    /* Allocate buffer for packbits data. Worst case: Less than 1% increase */
    packb = (guchar *)g_malloc ((width * 105)/100+2);
  }
  ps_begin_data (ofp);
  fprintf (ofp, "image\n");

#define GET_GRAY_TILE(begin) \
  {int scan_lines; \
    scan_lines = (i+tile_height-1 < height) ? tile_height : (height-i); \
    gimp_pixel_rgn_get_rect (&pixel_rgn, begin, 0, i, width, scan_lines); \
    src = begin; }

  for (i = 0; i < height; i++)
    {
      if ((i % tile_height) == 0) GET_GRAY_TILE (data); /* Get more data */
      if (!level2)
      {
        for (j = 0; j < width; j++)
          {
            putc (hex[(*src) >> 4], ofp);
            putc (hex[(*(src++)) & 0x0f], ofp);
            if (((j+1) % 39) == 0) putc ('\n', ofp);
          }
        putc ('\n', ofp);
      }
      else
      {int nout;

          compress_packbits (width, src, &nout, packb);
          ascii85_nout (nout, packb, ofp);
          src += width;
      }

      if ((i % 20) == 0)
      gimp_progress_update ((double) i / (double) height);
    }

  if (level2)
    {
      ascii85_out (128, ofp); /* Write EOD of RunLengthDecode filter */
      ascii85_done (ofp);
    }

  ps_end_data (ofp);
  fprintf (ofp, "showpage\n");
  g_free (data);

  if (packb)
    g_free (packb);

  gimp_drawable_detach (drawable);

  if (ferror (ofp))
    {
      g_message (_("Write error occurred"));
      return FALSE;
    }

  return TRUE;
#undef GET_GRAY_TILE
}


static gint
save_bw (FILE   *ofp,
         gint32  image_ID,
         gint32  drawable_ID)
{
  int height, width, i, j;
  int ncols, nbsl, nwrite;
  int tile_height;
  guchar *cmap, *ct;
  guchar *data, *src;
  guchar *packb = NULL;
  guchar *scanline, *dst, mask;
  guchar *hex_scanline;
  GimpPixelRgn pixel_rgn;
  GimpDrawable *drawable;
  GimpImageType drawable_type;
  static char *hex = "0123456789abcdef";
  gint level2 = (psvals.level > 1);

  cmap = gimp_image_get_colormap (image_ID, &ncols);

  drawable = gimp_drawable_get (drawable_ID);
  drawable_type = gimp_drawable_type (drawable_ID);
  width = drawable->width;
  height = drawable->height;
  tile_height = gimp_tile_height ();
  gimp_pixel_rgn_init (&pixel_rgn,
                       drawable, 0, 0, width, height, FALSE, FALSE);

  /* allocate a buffer for retrieving information from the pixel region  */
  src = data = g_new (guchar, tile_height * width * drawable->bpp);
  nbsl = (width+7)/8;
  scanline = g_new (guchar, nbsl + 1);
  hex_scanline = g_new (guchar, (nbsl + 1) * 2);

  /* Set up transformation in PostScript */
  save_ps_setup (ofp, drawable_ID, width, height, 1);

  /* Write read image procedure */
  if (!level2)
  {
    fprintf (ofp, "{ currentfile scanline readhexstring pop }\n");
  }
  else
  {
    fprintf (ofp,"currentfile /ASCII85Decode filter /RunLengthDecode filter\n");
    ascii85_init ();
    /* Allocate buffer for packbits data. Worst case: Less than 1% increase */
    packb = g_new (guchar, ((nbsl+1) * 105) / 100 + 2);
  }
  ps_begin_data (ofp);
  fprintf (ofp, "image\n");

#define GET_BW_TILE(begin) \
  {int scan_lines; \
    scan_lines = (i+tile_height-1 < height) ? tile_height : (height-i); \
    gimp_pixel_rgn_get_rect (&pixel_rgn, begin, 0, i, width, scan_lines); \
    src = begin; }

  for (i = 0; i < height; i++)
    {
      if ((i % tile_height) == 0) GET_BW_TILE (data); /* Get more data */
      dst = scanline;
      memset (dst, 0, nbsl);
      mask = 0x80;
      /* Build a bitmap for a scanline */
      for (j = 0; j < width; j++)
      {
        ct = cmap + *(src++)*3;
        if (ct[0] || ct[1] || ct[2])
          *dst |= mask;
        if (mask == 0x01) { mask = 0x80; dst++; } else mask >>= 1;
      }
      if (!level2)
      {
        /* Convert to hexstring */
        for (j = 0; j < nbsl; j++)
          {
            hex_scanline[j*2] = (unsigned char)hex[scanline[j] >> 4];
            hex_scanline[j*2+1] = (unsigned char)hex[scanline[j] & 0x0f];
          }
        /* Write out hexstring */
        j = nbsl * 2;
        dst = hex_scanline;
        while (j > 0)
          {
            nwrite = (j > 78) ? 78 : j;
            fwrite (dst, nwrite, 1, ofp);
            putc ('\n', ofp);
            j -= nwrite;
            dst += nwrite;
          }
      }
      else
      {int nout;

          compress_packbits (nbsl, scanline, &nout, packb);
          ascii85_nout (nout, packb, ofp);
      }

      if ((i % 20) == 0)
      gimp_progress_update ((double) i / (double) height);
    }

  if (level2)
    {
      ascii85_out (128, ofp); /* Write EOD of RunLengthDecode filter */
      ascii85_done (ofp);
    }

  ps_end_data (ofp);
  fprintf (ofp, "showpage\n");

  g_free (hex_scanline);
  g_free (scanline);
  g_free (data);

  if (packb)
    g_free (packb);

  gimp_drawable_detach (drawable);

  if (ferror (ofp))
    {
      g_message (_("Write error occurred"));
      return FALSE;
    }

  return TRUE;
#undef GET_BW_TILE
}


static gint
save_index (FILE   *ofp,
            gint32  image_ID,
            gint32  drawable_ID)
{
  int height, width, i, j;
  int ncols, bw;
  int tile_height;
  guchar *cmap, *cmap_start;
  guchar *data, *src;
  guchar *packb = NULL, *plane = NULL;
  char coltab[256*6], *ct;
  GimpPixelRgn pixel_rgn;
  GimpDrawable *drawable;
  GimpImageType drawable_type;
  static char *hex = "0123456789abcdef";
  static char *background = "000000";
  int level2 = (psvals.level > 1);

  cmap = cmap_start = gimp_image_get_colormap (image_ID, &ncols);

  ct = coltab;
  bw = 1;
  for (j = 0; j < 256; j++)
    {
      if (j >= ncols)
      {
        memcpy (ct, background, 6);
        ct += 6;
      }
      else
      {
        bw &=    ((cmap[0] == 0) && (cmap[1] == 0) && (cmap[2] == 0))
            || ((cmap[0] == 255) && (cmap[1] == 255) && (cmap[2] == 255));
        *(ct++) = (guchar)hex[(*cmap) >> 4];
        *(ct++) = (guchar)hex[(*(cmap++)) & 0x0f];
        *(ct++) = (guchar)hex[(*cmap) >> 4];
        *(ct++) = (guchar)hex[(*(cmap++)) & 0x0f];
        *(ct++) = (guchar)hex[(*cmap) >> 4];
        *(ct++) = (guchar)hex[(*(cmap++)) & 0x0f];
      }
    }
  if (bw)
    return (save_bw (ofp, image_ID, drawable_ID));

  drawable = gimp_drawable_get (drawable_ID);
  drawable_type = gimp_drawable_type (drawable_ID);
  width = drawable->width;
  height = drawable->height;
  tile_height = gimp_tile_height ();
  gimp_pixel_rgn_init (&pixel_rgn, drawable, 0, 0, width, height, FALSE, FALSE);

  /* allocate a buffer for retrieving information from the pixel region  */
  src = data = (guchar *)g_malloc (tile_height * width * drawable->bpp);

  /* Set up transformation in PostScript */
  save_ps_setup (ofp, drawable_ID, width, height, 3*8);

  /* Write read image procedure */
  if (!level2)
  {
    fprintf (ofp, "{ currentfile scanline readhexstring pop } false 3\n");
  }
  else
  {
    fprintf (ofp, "%% Strings to hold RGB-samples per scanline\n");
    fprintf (ofp, "/rstr %d string def\n", width);
    fprintf (ofp, "/gstr %d string def\n", width);
    fprintf (ofp, "/bstr %d string def\n", width);
    fprintf (ofp,
            "{currentfile /ASCII85Decode filter /RunLengthDecode filter\
 rstr readstring pop}\n");
    fprintf (ofp,
            "{currentfile /ASCII85Decode filter /RunLengthDecode filter\
 gstr readstring pop}\n");
    fprintf (ofp,
            "{currentfile /ASCII85Decode filter /RunLengthDecode filter\
 bstr readstring pop}\n");
    fprintf (ofp, "true 3\n");

    /* Allocate buffer for packbits data. Worst case: Less than 1% increase */
    packb = (guchar *)g_malloc ((width * 105)/100+2);
    plane = (guchar *)g_malloc (width);
  }
  ps_begin_data (ofp);
  fprintf (ofp, "colorimage\n");

#define GET_INDEX_TILE(begin) \
  {int scan_lines; \
    scan_lines = (i+tile_height-1 < height) ? tile_height : (height-i); \
    gimp_pixel_rgn_get_rect (&pixel_rgn, begin, 0, i, width, scan_lines); \
    src = begin; }

  for (i = 0; i < height; i++)
    {
      if ((i % tile_height) == 0) GET_INDEX_TILE (data); /* Get more data */
      if (!level2)
      {
        for (j = 0; j < width; j++)
          {
            fwrite (coltab+(*(src++))*6, 6, 1, ofp);
            if (((j+1) % 13) == 0) putc ('\n', ofp);
          }
        putc ('\n', ofp);
      }
      else
        {guchar *plane_ptr, *src_ptr;
         int rgb, nout;

          for (rgb = 0; rgb < 3; rgb++)
          {
            src_ptr = src;
            plane_ptr = plane;
            for (j = 0; j < width; j++)
              *(plane_ptr++) = cmap_start[3 * *(src_ptr++) + rgb];
            compress_packbits (width, plane, &nout, packb);
            ascii85_init ();
            ascii85_nout (nout, packb, ofp);
            ascii85_out (128, ofp); /* Write EOD of RunLengthDecode filter */
            ascii85_done (ofp);
          }
          src += width;
        }

      if ((i % 20) == 0)
      gimp_progress_update ((double) i / (double) height);
    }

  ps_end_data (ofp);
  fprintf (ofp, "showpage\n");

  g_free (data);

  if (packb)
    g_free (packb);

  if (plane)
    g_free (plane);

  gimp_drawable_detach (drawable);

  if (ferror (ofp))
    {
      g_message (_("Write error occurred"));
      return FALSE;
    }

  return TRUE;
#undef GET_INDEX_TILE
}


static gint
save_rgb (FILE   *ofp,
          gint32  image_ID,
          gint32  drawable_ID)
{
  int height, width, tile_height;
  int i, j;
  guchar *data, *src;
  guchar *packb = NULL, *plane = NULL;
  GimpPixelRgn pixel_rgn;
  GimpDrawable *drawable;
  GimpImageType drawable_type;
  static char *hex = "0123456789abcdef";
  int level2 = (psvals.level > 1);

  drawable = gimp_drawable_get (drawable_ID);
  drawable_type = gimp_drawable_type (drawable_ID);
  width = drawable->width;
  height = drawable->height;
  tile_height = gimp_tile_height ();
  gimp_pixel_rgn_init (&pixel_rgn, drawable, 0, 0, width, height, FALSE, FALSE);

  /* allocate a buffer for retrieving information from the pixel region  */
  src = data = (guchar *)g_malloc (tile_height * width * drawable->bpp);

  /* Set up transformation in PostScript */
  save_ps_setup (ofp, drawable_ID, width, height, 3*8);

  /* Write read image procedure */
  if (!level2)
  {
    fprintf (ofp, "{ currentfile scanline readhexstring pop } false 3\n");
  }
  else
  {
    fprintf (ofp, "%% Strings to hold RGB-samples per scanline\n");
    fprintf (ofp, "/rstr %d string def\n", width);
    fprintf (ofp, "/gstr %d string def\n", width);
    fprintf (ofp, "/bstr %d string def\n", width);
    fprintf (ofp,
            "{currentfile /ASCII85Decode filter /RunLengthDecode filter\
 rstr readstring pop}\n");
    fprintf (ofp,
            "{currentfile /ASCII85Decode filter /RunLengthDecode filter\
 gstr readstring pop}\n");
    fprintf (ofp,
            "{currentfile /ASCII85Decode filter /RunLengthDecode filter\
 bstr readstring pop}\n");
    fprintf (ofp, "true 3\n");

    /* Allocate buffer for packbits data. Worst case: Less than 1% increase */
    packb = (guchar *)g_malloc ((width * 105)/100+2);
    plane = (guchar *)g_malloc (width);
  }
  ps_begin_data (ofp);
  fprintf (ofp, "colorimage\n");

#define GET_RGB_TILE(begin) \
  {int scan_lines; \
    scan_lines = (i+tile_height-1 < height) ? tile_height : (height-i); \
    gimp_pixel_rgn_get_rect (&pixel_rgn, begin, 0, i, width, scan_lines); \
    src = begin; }

  for (i = 0; i < height; i++)
    {
      if ((i % tile_height) == 0) GET_RGB_TILE (data); /* Get more data */
      if (!level2)
      {
        for (j = 0; j < width; j++)
          {
            putc (hex[(*src) >> 4], ofp);        /* Red */
            putc (hex[(*(src++)) & 0x0f], ofp);
            putc (hex[(*src) >> 4], ofp);        /* Green */
            putc (hex[(*(src++)) & 0x0f], ofp);
            putc (hex[(*src) >> 4], ofp);        /* Blue */
            putc (hex[(*(src++)) & 0x0f], ofp);
            if (((j+1) % 13) == 0) putc ('\n', ofp);
          }
        putc ('\n', ofp);
      }
      else
      {guchar *plane_ptr, *src_ptr;
         int rgb, nout;

          for (rgb = 0; rgb < 3; rgb++)
          {
            src_ptr = src + rgb;
            plane_ptr = plane;
            for (j = 0; j < width; j++)
          {
              *(plane_ptr++) = *src_ptr;
              src_ptr += 3;
            }
            compress_packbits (width, plane, &nout, packb);
            ascii85_init ();
          ascii85_nout (nout, packb, ofp);
            ascii85_out (128, ofp); /* Write EOD of RunLengthDecode filter */
            ascii85_done (ofp);
          }
          src += 3*width;
      }

      if ((i % 20) == 0)
      gimp_progress_update ((double) i / (double) height);
    }

  ps_end_data (ofp);
  fprintf (ofp, "showpage\n");
  g_free (data);

  if (packb)
    g_free (packb);

  if (plane)
    g_free (plane);

  gimp_drawable_detach (drawable);

  if (ferror (ofp))
    {
      g_message (_("Write error occurred"));
      return FALSE;
    }

  return TRUE;
#undef GET_RGB_TILE
}

/*  Load interface functions  */

static gboolean
load_dialog (void)
{
  GtkWidget *dialog;
  GtkWidget *main_vbox;
  GtkWidget *hbox;
  GtkWidget *frame;
  GtkWidget *vbox;
  GtkWidget *table;
  GtkWidget *spinbutton;
  GtkObject *adj;
  GtkWidget *entry;
  GtkWidget *toggle;
  gboolean   run;

  gimp_ui_init ("ps", FALSE);

  dialog = gimp_dialog_new (_("Load PostScript"), "ps",
                            NULL, 0,
                      gimp_standard_help_func, "file-ps-load",

                      GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
                      GTK_STOCK_OK,     GTK_RESPONSE_OK,

                      NULL);

  main_vbox = gtk_vbox_new (FALSE, 12);
  gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);
  gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog)->vbox), main_vbox,
                      FALSE, FALSE, 0);
  gtk_widget_show (main_vbox);

  hbox = gtk_hbox_new (TRUE, 12);
  gtk_box_pack_start (GTK_BOX (main_vbox), hbox, FALSE, FALSE, 0);
  gtk_widget_show (hbox);

  /* Rendering */
  frame = gimp_frame_new (_("Rendering"));
  gtk_box_pack_start (GTK_BOX (hbox), frame, FALSE, TRUE, 0);

  vbox = gtk_vbox_new (FALSE, 6);
  gtk_container_add (GTK_CONTAINER (frame), vbox);

  /* Resolution/Width/Height/Pages labels */
  table = gtk_table_new (4, 2, FALSE);
  gtk_table_set_row_spacings (GTK_TABLE (table), 6);
  gtk_table_set_col_spacings (GTK_TABLE (table), 6);
  gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
  gtk_widget_show (table);

  spinbutton = gimp_spin_button_new (&adj, plvals.resolution,
                             5, 1440, 1, 10, 0, 1, 0);
  gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
                       _("Resolution:"), 0.0, 0.5,
                       spinbutton, 1, FALSE);
  g_signal_connect (adj, "value_changed",
                    G_CALLBACK (gimp_int_adjustment_update),
                    &plvals.resolution);

  spinbutton = gimp_spin_button_new (&adj, plvals.width,
                             1, GIMP_MAX_IMAGE_SIZE, 1, 10, 0, 1, 0);
  gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
                       _("_Width:"), 0.0, 0.5,
                       spinbutton, 1, FALSE);
  g_signal_connect (adj, "value_changed",
                    G_CALLBACK (gimp_int_adjustment_update),
                    &plvals.width);

  spinbutton = gimp_spin_button_new (&adj, plvals.height,
                             1, GIMP_MAX_IMAGE_SIZE, 1, 10, 0, 1, 0);
  gimp_table_attach_aligned (GTK_TABLE (table), 0, 2,
                       _("_Height:"), 0.0, 0.5,
                       spinbutton, 1, FALSE);
  g_signal_connect (adj, "value_changed",
                    G_CALLBACK (gimp_int_adjustment_update),
                    &plvals.height);

  entry = gtk_entry_new ();
  gtk_widget_set_size_request (entry, 80, -1);
  gtk_entry_set_text (GTK_ENTRY (entry), plvals.pages);
  gimp_table_attach_aligned (GTK_TABLE (table), 0, 3,
                       _("Pages:"), 0.0, 0.5,
                       entry, 1, FALSE);
  g_signal_connect (entry, "changed",
                    G_CALLBACK (load_pages_entry_callback),
                    NULL);
  gimp_help_set_help_data (GTK_WIDGET (entry),
                           _("Pages to load (e.g.: 1-4 or 1,3,5-7)"), NULL);

  toggle = gtk_check_button_new_with_label (_("Try Bounding Box"));
  gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
  gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), plvals.use_bbox);
  gtk_widget_show (toggle);

  g_signal_connect (toggle, "toggled",
                    G_CALLBACK (gimp_toggle_button_update),
                    &plvals.use_bbox);

  gtk_widget_show (vbox);
  gtk_widget_show (frame);

  /* Colouring */
  frame = gimp_int_radio_group_new (TRUE, _("Coloring"),
                            G_CALLBACK (gimp_radio_button_update),
                            &plvals.pnm_type, plvals.pnm_type,

                            _("B/W"),       4, NULL,
                            _("Gray"),      5, NULL,
                            _("Color"),     6, NULL,
                            _("Automatic"), 7, NULL,

                            NULL);
  gtk_box_pack_start (GTK_BOX (hbox), frame, FALSE, TRUE, 0);
  gtk_widget_show (frame);

  hbox = gtk_hbox_new (TRUE, 12);
  gtk_box_pack_start (GTK_BOX (main_vbox), hbox, FALSE, FALSE, 0);
  gtk_widget_show (hbox);

  frame = gimp_int_radio_group_new (TRUE, _("Text antialiasing"),
                            G_CALLBACK (gimp_radio_button_update),
                            &plvals.textalpha, plvals.textalpha,

                            _("None"),   1, NULL,
                            _("Weak"),   2, NULL,
                            _("Strong"), 4, NULL,

                            NULL);
  gtk_box_pack_start (GTK_BOX (hbox), frame, FALSE, TRUE, 0);
  gtk_widget_show (frame);

  frame = gimp_int_radio_group_new (TRUE, _("Graphic antialiasing"),
                            G_CALLBACK (gimp_radio_button_update),
                            &plvals.graphicsalpha, plvals.graphicsalpha,

                            _("None"),   1, NULL,
                            _("Weak"),   2, NULL,
                            _("Strong"), 4, NULL,

                            NULL);
  gtk_box_pack_start (GTK_BOX (hbox), frame, FALSE, TRUE, 0);
  gtk_widget_show (frame);

  gtk_widget_show (dialog);

  run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);

  gtk_widget_destroy (dialog);

  return run;
}

static void
load_pages_entry_callback (GtkWidget *widget,
                     gpointer   data)
{
  gsize nelem = sizeof (plvals.pages);

  strncpy (plvals.pages, gtk_entry_get_text (GTK_ENTRY (widget)), nelem);
  plvals.pages[nelem-1] = '\0';
}


/*  Save interface functions  */

static gboolean
save_dialog (void)
{
  SaveDialogVals *vals;
  GtkWidget *dialog;
  GtkWidget *toggle;
  GtkWidget *frame, *uframe;
  GtkWidget *hbox, *vbox;
  GtkWidget *main_vbox[2];
  GtkWidget *table;
  GtkWidget *spinbutton;
  GtkObject *adj;
  gint       j;
  gboolean   run;

  vals = g_new (SaveDialogVals, 1);
  vals->level = (psvals.level > 1);

  dialog = gimp_dialog_new (_("Save as PostScript"), "ps",
                            NULL, 0,
                      gimp_standard_help_func, "file-ps-save",

                      GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
                      GTK_STOCK_OK,     GTK_RESPONSE_OK,

                      NULL);

  /* Main hbox */
  hbox = gtk_hbox_new (FALSE, 12);
  gtk_container_set_border_width (GTK_CONTAINER (hbox), 12);
  gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog)->vbox), hbox,
                      FALSE, FALSE, 0);
  main_vbox[0] = main_vbox[1] = NULL;

  for (j = 0; j < G_N_ELEMENTS (main_vbox); j++)
    {
      main_vbox[j] = gtk_vbox_new (FALSE, 12);
      gtk_box_pack_start (GTK_BOX (hbox), main_vbox[j], FALSE, TRUE, 0);
      gtk_widget_show (main_vbox[j]);
    }

  /* Image Size */
  frame = gimp_frame_new (_("Image Size"));
  gtk_box_pack_start (GTK_BOX (main_vbox[0]), frame, FALSE, TRUE, 0);

  vbox = gtk_vbox_new (FALSE, 6);
  gtk_container_add (GTK_CONTAINER (frame), vbox);

  /* Width/Height/X-/Y-offset labels */
  table = gtk_table_new (4, 2, FALSE);
  gtk_table_set_row_spacings (GTK_TABLE (table), 6);
  gtk_table_set_col_spacings (GTK_TABLE (table), 6);
  gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
  gtk_widget_show (table);

  spinbutton = gimp_spin_button_new (&vals->adjustment[0], psvals.width,
                             1e-5, GIMP_MAX_IMAGE_SIZE, 1, 10, 0, 1, 2);
  gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
                       _("_Width:"), 0.0, 0.5,
                       spinbutton, 1, FALSE);
  g_signal_connect (vals->adjustment[0], "value_changed",
                    G_CALLBACK (gimp_double_adjustment_update),
                    &psvals.width);

  spinbutton = gimp_spin_button_new (&vals->adjustment[1], psvals.height,
                             1e-5, GIMP_MAX_IMAGE_SIZE, 1, 10, 0, 1, 2);
  gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
                       _("_Height:"), 0.0, 0.5,
                       spinbutton, 1, FALSE);
  g_signal_connect (vals->adjustment[1], "value_changed",
                    G_CALLBACK (gimp_double_adjustment_update),
                    &psvals.height);

  spinbutton = gimp_spin_button_new (&vals->adjustment[2], psvals.x_offset,
                             0.0, GIMP_MAX_IMAGE_SIZE, 1, 10, 0, 1, 2);
  gimp_table_attach_aligned (GTK_TABLE (table), 0, 2,
                       _("_X offset:"), 0.0, 0.5,
                       spinbutton, 1, FALSE);
  g_signal_connect (vals->adjustment[2], "value_changed",
                    G_CALLBACK (gimp_double_adjustment_update),
                    &psvals.x_offset);

  spinbutton = gimp_spin_button_new (&vals->adjustment[3], psvals.y_offset,
                             0.0, GIMP_MAX_IMAGE_SIZE, 1, 10, 0, 1, 2);
  gimp_table_attach_aligned (GTK_TABLE (table), 0, 3,
                       _("_Y offset:"), 0.0, 0.5,
                       spinbutton, 1, FALSE);
  g_signal_connect (vals->adjustment[3], "value_changed",
                    G_CALLBACK (gimp_double_adjustment_update),
                    &psvals.y_offset);

  toggle = gtk_check_button_new_with_mnemonic (_("_Keep aspect ratio"));
  gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
  gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), psvals.keep_ratio);
  gtk_widget_show (toggle);

  gimp_help_set_help_data (toggle,
                           _("When toggled, the resulting image will be scaled to fit "
                             "into the given size without changing the aspect ratio."),
                     "#keep_aspect_ratio"),

  g_signal_connect (toggle, "toggled",
                    G_CALLBACK (gimp_toggle_button_update),
                    &psvals.keep_ratio);

  /* Unit */
  uframe = gimp_int_radio_group_new (TRUE, _("Unit"),
                             G_CALLBACK (save_unit_toggle_update),
                             vals, psvals.unit_mm,

                             _("_Inch"),       FALSE, NULL,
                             _("_Millimeter"), TRUE,  NULL,

                             NULL);

  gtk_box_pack_start (GTK_BOX (main_vbox[0]), uframe, TRUE, TRUE, 0);
  gtk_widget_show (uframe);

  gtk_widget_show (vbox);
  gtk_widget_show (frame);

  /* Rotation */
  frame = gimp_int_radio_group_new (TRUE, _("Rotation"),
                            G_CALLBACK (gimp_radio_button_update),
                            &psvals.rotate, psvals.rotate,

                            "_0",   0,   NULL,
                            "_90",  90,  NULL,
                            "_180", 180, NULL,
                            "_270", 270, NULL,

                            NULL);

  gtk_box_pack_start (GTK_BOX (main_vbox[1]), frame, TRUE, TRUE, 0);
  gtk_widget_show (frame);

  /* Format */
  frame = gimp_frame_new (_("Output"));
  gtk_box_pack_start (GTK_BOX (main_vbox[1]), frame, TRUE, TRUE, 0);

  vbox = gtk_vbox_new (FALSE, 6);
  gtk_container_add (GTK_CONTAINER (frame), vbox);

  toggle = gtk_check_button_new_with_mnemonic (_("_PostScript level 2"));
  gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
  gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), vals->level);
  gtk_widget_show (toggle);

  g_signal_connect (toggle, "toggled",
                    G_CALLBACK (gimp_toggle_button_update),
                    &vals->level);

  toggle = gtk_check_button_new_with_mnemonic (_("_Encapsulated PostScript"));
  gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
  gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), psvals.eps);
  gtk_widget_show (toggle);

  g_signal_connect (toggle, "toggled",
                    G_CALLBACK (gimp_toggle_button_update),
                    &psvals.eps);

  toggle = gtk_check_button_new_with_mnemonic (_("P_review"));
  gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
  gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), psvals.preview);
  gtk_widget_show (toggle);

  g_signal_connect (toggle, "toggled",
                    G_CALLBACK (gimp_toggle_button_update),
                    &psvals.preview);

  /* Preview size label/entry */
  table = gtk_table_new (1, 2, FALSE);
  gtk_table_set_col_spacings (GTK_TABLE (table), 6);
  gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
  gtk_widget_show (table);

  g_object_set_data (G_OBJECT (toggle), "set_sensitive", table);
  gtk_widget_set_sensitive (table, psvals.preview);

  spinbutton = gimp_spin_button_new (&adj, psvals.preview_size,
                             0, 1024, 1, 10, 0, 1, 0);
  gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
                       _("Preview _size:"), 1.0, 0.5,
                       spinbutton, 1, FALSE);
  gtk_widget_show (spinbutton);

  g_signal_connect (adj, "value_changed",
                    G_CALLBACK (gimp_int_adjustment_update),
                    &psvals.preview_size);

  gtk_widget_show (vbox);
  gtk_widget_show (frame);

  gtk_widget_show (hbox);
  gtk_widget_show (dialog);

  run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);

  gtk_widget_destroy (dialog);

  psvals.level = (vals->level) ? 2 : 1;

  g_free (vals);

  return run;
}

static void
save_unit_toggle_update (GtkWidget *widget,
                   gpointer   data)
{
  if (GTK_TOGGLE_BUTTON (widget)->active)
    {
      SaveDialogVals *vals;
      gdouble factor;
      gdouble value;
      gint    unit_mm;
      gint    i;

      vals    = (SaveDialogVals *) data;
      unit_mm = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (widget),
                                                    "gimp-item-data"));

      psvals.unit_mm = unit_mm;

      if (unit_mm)
      factor = 25.4;
      else
      factor = 1.0 / 25.4;

      for (i = 0; i < 4; i++)
      {
        value = GTK_ADJUSTMENT (vals->adjustment[i])->value * factor;

        gtk_adjustment_set_value (GTK_ADJUSTMENT (vals->adjustment[i]), value);
      }
    }
}

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