Initial revision

1 files changed, 116 insertions, 0 deletions

diff --git a/src/include/font.h b/src/include/font.h
new file mode 100644
index 00000000..099f97be
--- /dev/null
+++ b/src/include/font.h
@@ -0,0 +1,116 @@
+// -*- C++ -*-
+/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff 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.
+
+groff 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 groff; see the file COPYING.  If not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+typedef void (*FONT_COMMAND_HANDLER)(const char *, const char *,
+				     const char *, int);
+
+struct font_kern_list;
+struct font_char_metric;
+struct font_widths_cache;
+
+class font {
+public:
+  enum {
+    LIG_ff = 1,
+    LIG_fi = 2,
+    LIG_fl = 4,
+    LIG_ffi = 8,
+    LIG_ffl = 16
+    };
+
+  virtual ~font();
+  int contains(int index);
+  int is_special();
+  int get_width(int index, int point_size);
+  int get_height(int index, int point_size);
+  int get_depth(int index, int point_size);
+  int get_space_width(int point_size);
+  int get_character_type(int index);
+  int get_kern(int index1, int index2, int point_size);
+  int get_skew(int index, int point_size, int slant);
+  int has_ligature(int);
+  int get_italic_correction(int index, int point_size);
+  int get_left_italic_correction(int index, int point_size);
+  int get_subscript_correction(int index, int point_size);
+  int get_code(int i);
+  const char *get_special_device_encoding(int index);
+  const char *get_name();
+  const char *get_internal_name();
+
+  static font *load_font(const char *, int *not_found = 0);
+  static void command_line_font_dir(const char *path);
+  static FILE *open_file(const char *name, char **pathp);
+  static int load_desc();
+  static int name_to_index(const char *);
+  static int number_to_index(int);
+  static FONT_COMMAND_HANDLER
+    set_unknown_desc_command_handler(FONT_COMMAND_HANDLER);
+
+  static int res;
+  static int hor;
+  static int vert;
+  static int unitwidth;
+  static int paperwidth;
+  static int paperlength;
+  static int biggestfont;
+  static int spare2;
+  static int sizescale;
+  static int tcommand;
+  static int pass_filenames;
+  static int use_charnames_in_special;
+
+  static const char **font_name_table;
+  static const char **style_table;
+  static const char *family;
+  static int *sizes;
+private:
+  unsigned ligatures;
+  font_kern_list **kern_hash_table;
+  int space_width;
+  short *ch_index;
+  int nindices;
+  font_char_metric *ch;
+  int ch_used;
+  int ch_size;
+  int special;
+  char *name;
+  char *internalname;
+  double slant;
+  font_widths_cache *widths_cache;
+  static FONT_COMMAND_HANDLER unknown_desc_command_handler;
+
+  enum { KERN_HASH_TABLE_SIZE = 503 };
+
+  void add_entry(int index, const font_char_metric &);
+  void copy_entry(int new_index, int old_index);
+  void add_kern(int index1, int index2, int amount);
+  static int hash_kern(int i1, int i2);
+  void alloc_ch_index(int);
+  void extend_ch();
+  void compact();
+
+  static int scale(int w, int pointsize);
+  virtual void handle_unknown_font_command(const char *command,
+					   const char *arg,
+					   const char *file, int lineno);
+protected:
+  font(const char *);
+  int load(int *not_found = 0);
+};