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+/* pk.h: manipulate packed format font files.  See the PKtype source
+   code (by Tomas Rokicki), among other places, for the precise
+   definition of this bitmap format.
+
+Copyright (C) 1992 Free Software Foundation, Inc.
+
+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, 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#ifndef PACKED_FONT_LIBRARY_H
+#define PACKED_FONT_LIBRARY_H
+
+#include "bounding-box.h"
+#include "font.h"
+#include <kpathsea/types.h>
+
+
+
+/* Prepare and finish off FONT_NAME for reading.  */
+extern boolean pk_open_input_file (string font_name);
+extern void pk_close_input_file (string font_name);
+
+/* The global information about the PK file is given in the preamble.  */
+typedef struct
+{
+  string comment;
+  fix_word design_size;
+  unsigned checksum;
+  double h_resolution, v_resolution;
+} pk_preamble_type;
+
+/* This usually indicates the source of the PK file.  */
+#define PK_COMMENT(p)  ((p).comment)
+
+/* The font's design size is in TeX points, expressed as a fix_word.  */
+#define PK_DESIGN_SIZE(p)  ((p).design_size)
+
+/* The PK checksum should match the checksums in the TFM file and/or the
+   GF file, if they exist.  */
+#define PK_CHECKSUM(p)  ((p).checksum)
+
+/* We express the resolutions in pixels per point multiplied by 2^16.  */
+#define PK_H_RESOLUTION(p)  ((p).h_resolution)
+#define PK_V_RESOLUTION(p)  ((p).v_resolution)
+
+/* Return the above structure for the font FONT_NAME.  */
+extern pk_preamble_type pk_get_preamble (string font_name);
+
+
+
+/* The characters comprise the bulk of the file.  */
+typedef struct
+{
+  one_byte code;
+  fix_word tfm_width;
+  signed_4_bytes h_escapement;
+  bounding_box_type bb;
+  bitmap_type bitmap;
+} pk_char_type;
+
+/* The library guarantees that the character code is in the range 0 to
+   255 (although the PK format does not require that).  */
+#define PK_CHARCODE(c)  ((c).code)
+
+/* The TFM width is the character's true width divided by the design
+   size (expressed as a fix_word).  */
+#define PK_TFM_WIDTH(c)  ((c).tfm_width)
+
+/* The horizontal escapement (i.e., set width) is in pixels.  */
+#define PK_H_ESCAPEMENT(c)  ((c).h_escapement)
+
+/* The bounding box is guaranteed to be the tightest possible.  */
+#define PK_CHAR_BB(c)  ((c).bb)
+
+/* The bits themselves.  See `bitmap.h'.  */
+#define PK_BITMAP(c)  ((c).bitmap)
+
+
+/* Allocate and return a pointer to the above structure for the
+   character CODE in the font FONT_NAME, or NULL if that character is
+   not in that font.  */
+extern pk_char_type *pk_get_char (one_byte code, string font_name);
+
+#endif /* not PACKED_FONT_LIBRARY_H */