1/* Definitions and header for handling BDF fonts on the Microsoft W32 API.
2   Copyright (C) 1999, 2001, 2002, 2003, 2004, 2005,
3                 2006, 2007  Free Software Foundation, Inc.
4
5This file is part of GNU Emacs.
6
7GNU Emacs is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2, or (at your option)
10any later version.
11
12GNU Emacs is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GNU Emacs; see the file COPYING.  If not, write to
19the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20Boston, MA 02110-1301, USA.  */
21
22/* Based heavily on code by H. Miyashita for Meadow (a descendant of
23   MULE for W32). */
24
25#ifndef EMACS_W32BDF_H
26#define EMACS_W32BDF_H
27
28#define BDF_FIRST_OFFSET_TABLE 0x200
29#define BDF_SECOND_OFFSET_TABLE 0x80
30#define BDF_SECOND_OFFSET(x) ((x) & 0x7f)
31#define BDF_FIRST_OFFSET(x) (((x) >> 8) | (((x) & 0x80) << 1))
32#define BDF_CODEPOINT_MAX (BDF_FIRST_OFFSET_TABLE * BDF_SECOND_OFFSET_TABLE)
33#define BDF_CODEPOINT_RANGE_COVER_P(x) (((x) >= 0) && ((x) <= BDF_CODEPOINT_MAX))
34
35#define BDF_FONT_CACHE_SIZE 3000
36#define BDF_FONT_CLEAR_SIZE 600
37
38/*
39   GLYPH METRIC (# ... character's reference point)
40   ^
41 y |              (urx, ury)
42   |  ^ +----------------+
43 a | b| |character       | <- font bounding Box
44 x | b| |                |
45 i | h| | #(bbox, bboy)  |
46 s |  v +----------------+
47   |   (llx, lly)
48   |    <---------------->
49   |           bbw
50   +----------------------->
51   origin     x axis
52 */
53
54
55
56/* Structure of glyph information of one character.  */
57typedef struct
58{
59  int dwidth;			/* width in pixels */
60  int bbw, bbh, bbox, bboy;	/* bounding box in pixels */
61} glyph_metric;
62
63typedef struct
64{
65  glyph_metric metric;
66  int row_byte_size;            /* size in bytes occupied by one row of the bitmap */
67  int bitmap_size;		/* size in bytes of the following slots */
68  unsigned char *bitmap;	/*  */
69} glyph_struct;
70
71typedef struct fchar *pfont_char;
72
73typedef struct
74{
75  glyph_metric metric;
76  pfont_char psrc;
77  int row_byte_size;
78  int bitmap_size;
79  unsigned char *pbmp;
80} cache_bitmap;
81
82typedef struct fchar
83{
84  unsigned char *offset;
85  cache_bitmap *pcbmp;
86} font_char;
87
88typedef struct
89{
90  char *filename;
91  HANDLE hfile;
92  HANDLE hfilemap;
93  unsigned char *font;
94  unsigned char *seeked;
95  DWORD size;
96  font_char *chtbl[BDF_FIRST_OFFSET_TABLE];
97  int llx, lly, urx, ury;	/* Font bounding box */
98
99  int yoffset;
100  int relative_compose;
101  int default_ascent;
102
103  unsigned char *registry;
104  unsigned char *encoding;
105  unsigned char *slant;
106/*  unsigned char *width; */
107
108  int width;
109  int height;
110  int pixsz;
111  int nchars;
112} bdffont;
113
114#define BDF_FILE_SIZE_MAX 256*1024*1024 /* 256Mb */
115#define BDF_FONT_FILE(font) (((bdffont*)(font))->filename)
116#define MAKELENDSHORT(c1, c2) (unsigned short)((c1) | ((c2) << 8))
117
118bdffont *w32_init_bdf_font (char *filename);
119void w32_free_bdf_font (bdffont *fontp);
120int w32_get_bdf_glyph (bdffont *fontp, int index, int size,
121                       glyph_struct *glyph);
122int w32_BDF_TextOut (bdffont *fontp, HDC hdc, int left,
123                     int top, unsigned char *text, int dim,
124                     int bytelen, int fixed_pitch_size);
125int w32_BDF_to_x_font (char *file, char* xstr, int len);
126
127#endif  /* EMACS_W32BDF_H */
128
129/* arch-tag: 7499e9f2-197e-44cc-9274-373f00b51eec
130   (do not change this comment) */
131