1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
|
/*
* Copyright 2000 Computing Research Labs, New Mexico State University
* Copyright 2001-2004, 2011 Francesco Zappa Nardelli
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COMPUTING RESEARCH LAB OR NEW MEXICO STATE UNIVERSITY BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT
* OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
* THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef __BDF_H__
#define __BDF_H__
/*
* Based on bdf.h,v 1.16 2000/03/16 20:08:51 mleisher
*/
#include <ft2build.h>
#include <freetype/internal/ftobjs.h>
#include <freetype/internal/ftstream.h>
FT_BEGIN_HEADER
/* Imported from bdfP.h */
#define _bdf_glyph_modified( map, e ) \
( (map)[(e) >> 5] & ( 1 << ( (e) & 31 ) ) )
#define _bdf_set_glyph_modified( map, e ) \
( (map)[(e) >> 5] |= ( 1 << ( (e) & 31 ) ) )
#define _bdf_clear_glyph_modified( map, e ) \
( (map)[(e) >> 5] &= ~( 1 << ( (e) & 31 ) ) )
/* end of bdfP.h */
/*************************************************************************/
/* */
/* BDF font options macros and types. */
/* */
/*************************************************************************/
#define BDF_CORRECT_METRICS 0x01 /* Correct invalid metrics when loading. */
#define BDF_KEEP_COMMENTS 0x02 /* Preserve the font comments. */
#define BDF_KEEP_UNENCODED 0x04 /* Keep the unencoded glyphs. */
#define BDF_PROPORTIONAL 0x08 /* Font has proportional spacing. */
#define BDF_MONOWIDTH 0x10 /* Font has mono width. */
#define BDF_CHARCELL 0x20 /* Font has charcell spacing. */
#define BDF_ALL_SPACING ( BDF_PROPORTIONAL | \
BDF_MONOWIDTH | \
BDF_CHARCELL )
#define BDF_DEFAULT_LOAD_OPTIONS ( BDF_CORRECT_METRICS | \
BDF_KEEP_COMMENTS | \
BDF_KEEP_UNENCODED | \
BDF_PROPORTIONAL )
typedef struct bdf_options_t_
{
int correct_metrics;
int keep_unencoded;
int keep_comments;
int font_spacing;
} bdf_options_t;
/* Callback function type for unknown configuration options. */
typedef int
(*bdf_options_callback_t)( bdf_options_t* opts,
char** params,
unsigned long nparams,
void* client_data );
/*************************************************************************/
/* */
/* BDF font property macros and types. */
/* */
/*************************************************************************/
#define BDF_ATOM 1
#define BDF_INTEGER 2
#define BDF_CARDINAL 3
/* This structure represents a particular property of a font. */
/* There are a set of defaults and each font has their own. */
typedef struct bdf_property_t_
{
char* name; /* Name of the property. */
int format; /* Format of the property. */
int builtin; /* A builtin property. */
union
{
char* atom;
long l;
unsigned long ul;
} value; /* Value of the property. */
} bdf_property_t;
/*************************************************************************/
/* */
/* BDF font metric and glyph types. */
/* */
/*************************************************************************/
typedef struct bdf_bbx_t_
{
unsigned short width;
unsigned short height;
short x_offset;
short y_offset;
short ascent;
short descent;
} bdf_bbx_t;
typedef struct bdf_glyph_t_
{
char* name; /* Glyph name. */
long encoding; /* Glyph encoding. */
unsigned short swidth; /* Scalable width. */
unsigned short dwidth; /* Device width. */
bdf_bbx_t bbx; /* Glyph bounding box. */
unsigned char* bitmap; /* Glyph bitmap. */
unsigned long bpr; /* Number of bytes used per row. */
unsigned short bytes; /* Number of bytes used for the bitmap. */
} bdf_glyph_t;
typedef struct _hashnode_
{
const char* key;
size_t data;
} _hashnode, *hashnode;
typedef struct hashtable_
{
int limit;
int size;
int used;
hashnode* table;
} hashtable;
typedef struct bdf_glyphlist_t_
{
unsigned short pad; /* Pad to 4-byte boundary. */
unsigned short bpp; /* Bits per pixel. */
long start; /* Beginning encoding value of glyphs. */
long end; /* Ending encoding value of glyphs. */
bdf_glyph_t* glyphs; /* Glyphs themselves. */
unsigned long glyphs_size; /* Glyph structures allocated. */
unsigned long glyphs_used; /* Glyph structures used. */
bdf_bbx_t bbx; /* Overall bounding box of glyphs. */
} bdf_glyphlist_t;
typedef struct bdf_font_t_
{
char* name; /* Name of the font. */
bdf_bbx_t bbx; /* Font bounding box. */
long point_size; /* Point size of the font. */
unsigned long resolution_x; /* Font horizontal resolution. */
unsigned long resolution_y; /* Font vertical resolution. */
int spacing; /* Font spacing value. */
unsigned short monowidth; /* Logical width for monowidth font. */
long default_char; /* Encoding of the default glyph. */
long font_ascent; /* Font ascent. */
long font_descent; /* Font descent. */
unsigned long glyphs_size; /* Glyph structures allocated. */
unsigned long glyphs_used; /* Glyph structures used. */
bdf_glyph_t* glyphs; /* Glyphs themselves. */
unsigned long unencoded_size; /* Unencoded glyph struct. allocated. */
unsigned long unencoded_used; /* Unencoded glyph struct. used. */
bdf_glyph_t* unencoded; /* Unencoded glyphs themselves. */
unsigned long props_size; /* Font properties allocated. */
unsigned long props_used; /* Font properties used. */
bdf_property_t* props; /* Font properties themselves. */
char* comments; /* Font comments. */
unsigned long comments_len; /* Length of comment string. */
bdf_glyphlist_t overflow; /* Storage used for glyph insertion. */
void* internal; /* Internal data for the font. */
/* The size of the next two arrays must be in sync with the */
/* size of the `have' array in the `bdf_parse_t' structure. */
unsigned long nmod[34816]; /* Bitmap indicating modified glyphs. */
unsigned long umod[34816]; /* Bitmap indicating modified */
/* unencoded glyphs. */
unsigned short modified; /* Boolean indicating font modified. */
unsigned short bpp; /* Bits per pixel. */
FT_Memory memory;
bdf_property_t* user_props;
unsigned long nuser_props;
hashtable proptbl;
} bdf_font_t;
/*************************************************************************/
/* */
/* Types for load/save callbacks. */
/* */
/*************************************************************************/
/* Error codes. */
#define BDF_MISSING_START -1
#define BDF_MISSING_FONTNAME -2
#define BDF_MISSING_SIZE -3
#define BDF_MISSING_CHARS -4
#define BDF_MISSING_STARTCHAR -5
#define BDF_MISSING_ENCODING -6
#define BDF_MISSING_BBX -7
#define BDF_OUT_OF_MEMORY -20
#define BDF_INVALID_LINE -100
/*************************************************************************/
/* */
/* BDF font API. */
/* */
/*************************************************************************/
FT_LOCAL( FT_Error )
bdf_load_font( FT_Stream stream,
FT_Memory memory,
bdf_options_t* opts,
bdf_font_t* *font );
FT_LOCAL( void )
bdf_free_font( bdf_font_t* font );
FT_LOCAL( bdf_property_t * )
bdf_get_property( char* name,
bdf_font_t* font );
FT_LOCAL( bdf_property_t * )
bdf_get_font_property( bdf_font_t* font,
const char* name );
FT_END_HEADER
#endif /* __BDF_H__ */
/* END */
|
