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
|
/*---------------------------------------------------------------------------*
| PDFlib - A library for generating PDF on the fly |
+---------------------------------------------------------------------------+
| Copyright (c) 1997-2006 Thomas Merz and PDFlib GmbH. All rights reserved. |
+---------------------------------------------------------------------------+
| |
| This software is subject to the PDFlib license. It is NOT in the |
| public domain. Extended versions and commercial licenses are |
| available, please check http://www.pdflib.com. |
| |
*---------------------------------------------------------------------------*/
/* $Id: ft_font.h,v 1.2 2009/10/20 18:12:26 scuri Exp $
*
* Header file for font handling
*
*/
#ifndef FT_FONT_H
#define FT_FONT_H
#include "pc_util.h"
#include "pc_geom.h"
#include "pc_file.h"
#include "ft_cid.h"
#define FNT_DEFAULT_WIDTH 250 /* some reasonable default */
#define FNT_DEFAULT_CIDWIDTH 1000 /* for CID fonts */
#define FNT_MISSING_WIDTH -1234567890 /* missing width value */
#define FNT_DEFAULT_UNDERLINEWIDTH 50 /* default value of underlineThickness*/
#define FNT_MAX_METRICS 2048.0 /* maximal font metrics value */
/*
* these are the font weight values of Microsoft
* see LOGFONT structure member lfWeight
*/
#define FNT_FW_DONTCARE 0
#define FNT_FW_THIN 100
#define FNT_FW_EXTRALIGHT 200
#define FNT_FW_ULTRALIGHT 200
#define FNT_FW_LIGHT 300
#define FNT_FW_NORMAL 400
#define FNT_FW_REGULAR 400
#define FNT_FW_MEDIUM 500
#define FNT_FW_SEMIBOLD 600
#define FNT_FW_DEMIBOLD 600
#define FNT_FW_BOLD 700
#define FNT_FW_EXTRABOLD 800
#define FNT_FW_ULTRABOLD 800
#define FNT_FW_HEAVY 900
#define FNT_FW_BLACK 900
/*
* these defaults are used when the stem value
* must be derived from the name (unused)
*/
#define FNT_STEMV_MIN 50 /* minimum StemV value */
#define FNT_STEMV_LIGHT 71 /* light StemV value */
#define FNT_STEMV_NORMAL 109 /* normal StemV value */
#define FNT_STEMV_MEDIUM 125 /* mediumbold StemV value */
#define FNT_STEMV_SEMIBOLD 135 /* semibold StemV value */
#define FNT_STEMV_BOLD 165 /* bold StemV value */
#define FNT_STEMV_EXTRABOLD 201 /* extrabold StemV value */
#define FNT_STEMV_BLACK 241 /* black StemV value */
/*
* Bit positions for the font descriptor flag
*/
#define FNT_FIXEDWIDTH (long) (1L<<0)
#define FNT_SERIF (long) (1L<<1)
#define FNT_SYMBOL (long) (1L<<2)
#define FNT_SCRIPT (long) (1L<<3)
#define FNT_ADOBESTANDARD (long) (1L<<5)
#define FNT_ITALIC (long) (1L<<6)
#define FNT_SMALLCAPS (long) (1L<<17)
#define FNT_FORCEBOLD (long) (1L<<18)
#define FNT_FI_ITALIC 255
#define FNT_FI_ITALICNAME "Italic"
#define FNT_DEF_ITALICANGLE -12 /* default italic angle */
#define FNT_MISSING_FONTVAL PDC_SHRT_MIN /* missing font value */
/* start sequence of PFA files */
#define FNT_PFA_STARTSEQU "%!PS"
/* missing file name for font outline data */
#define FNT_MISSING_FILENAME "__missing__filename__"
/* Font types */
typedef enum
{
fnt_Type0, /* Type0 fonts */
fnt_Type1, /* Type1 fonts */
fnt_MMType1, /* Multiple master fonts */
fnt_TrueType, /* TrueType fonts for 1-byte encoding */
fnt_CIDFontType2, /* TrueType fonts for 2-byte encoding */
fnt_Type1C, /* CFF PostScript fonts for 1-byte encoding */
fnt_CIDFontType0, /* OpenType fonts with CFF_ table for 2-byte encoding */
fnt_CIDFontType0C, /* CFF PostScript fonts for 2-byte encoding */
fnt_OpenType, /* OpenType fonts for 1-byte encoding */
fnt_OpenTypeC, /* OpenType fonts for 2-byte encoding */
fnt_Type3, /* Type3 fonts */
fnt_unknownType /* for initialization only */
}
fnt_fonttype;
/* Font styles */
typedef enum
{
fnt_Normal,
fnt_Bold,
fnt_Italic,
fnt_BoldItalic
}
fnt_fontstyle;
typedef struct fnt_interwidth_s fnt_interwidth;
typedef struct fnt_interwidth4_s fnt_interwidth4;
typedef struct fnt_glyphwidth_s fnt_glyphwidth;
typedef struct fnt_font_metric_s fnt_font_metric;
typedef struct fnt_font_s fnt_font;
/* Code interval for glyph width */
struct fnt_interwidth_s
{
pdc_ushort startcode; /* start code of interval */
pdc_short width; /* width of glyphs in the code interval */
};
struct fnt_interwidth4_s
{
int startcode; /* start UTF-32 Unicode of interval */
pdc_short width; /* width of glyphs in the code interval */
};
/* Code and Unicode for glyph width */
struct fnt_glyphwidth_s
{
pdc_ushort unicode; /* UTF-16 Unicode of glyph */
pdc_short code; /* builtin 8-bit code */
pdc_short width; /* glyph width */
};
/* Font metric exchange structure */
struct fnt_font_metric_s
{
char *name; /* font name (/FontName) */
pdc_ulong flags; /* font flags of font descriptor */
fnt_fonttype type; /* type of font */
int charcoll; /* supported CID character collection */
/* < 0: Halfwidth Latin-1 character */
/* font metric */
pdc_scalar italicAngle; /* AFM key: ItalicAngle */
int isFixedPitch; /* AFM key: IsFixedPitch */
pdc_scalar llx; /* AFM key: FontBBox */
pdc_scalar lly; /* AFM key: FontBBox */
pdc_scalar urx; /* AFM key: FontBBox */
pdc_scalar ury; /* AFM key: FontBBox */
int underlinePosition; /* AFM key: UnderlinePosition */
int underlineThickness; /* AFM key: UnderlineThickness */
int capHeight; /* AFM key: CapHeight */
int xHeight; /* AFM key: XHeight */
int ascender; /* AFM key: Ascender */
int descender; /* AFM key: Descender */
int StdVW; /* AFM key: StdVW */
int StdHW; /* AFM key: StdHW */
/* glyph widths */
int defwidth; /* default width */
int numwidths; /* number of entries in widths */
int *widths; /* ptr to glyph widths (enumerated by codes) */
int numinters; /* number of entries in ciw */
fnt_interwidth *ciw; /* ptr to code intervals for widths array */
int numglwidths; /* number of entries in glw */
fnt_glyphwidth *glw; /* ptr to glyph widths array */
};
/* Font exchange structure */
struct fnt_font_s
{
char *name; /* font name (/BaseFont or /Name or 'font_#') */
char *utf8name; /* UTF-8 encoded font name (maybe with BOM) */
char *filename; /* font file name */
fnt_font_metric m; /* name, type, flags, charcoll and metric */
pdc_bool isstdfont; /* is an incore font
* or standard CJK font in pdflib */
pdc_bool ishostfont; /* is an host font */
pdc_bool hasdescr; /* has font descriptor */
pdc_bool vertical; /* vertical writing mode */
pdc_ushort spacechar; /* code of space character depending on enc */
int spacewidth; /* width of space character */
int linegap; /* OpenType lineGap */
int weight; /* font weight value 0-1000 */
pdc_matrix matrix; /* Type3 font matrix */
pdc_rectangle bbox; /* Type3 font bounding box */
pdc_scalar fsscale; /* Type3 fontsize scaling */
pdc_bool issymbfont; /* is a symbol font */
pdc_encoding enc; /* font encoding shortcut */
int numglyphs; /* number of glyphs */
int numcodes; /* number of codes */
pdc_ushort *gid2code; /* mapping glyph ID -> [Uni]code or NULL */
pdc_ushort *code2gid; /* mapping [Uni]code -> glyph ID or NULL */
char *cmapname; /* CID CMap name */
/* font in memory */
pdc_bool embedded; /* embedded font */
char *imgname; /* name of virtual file containing *img */
size_t filelen; /* length of (uncompressed) font data */
pdc_byte *img; /* font (or CFF table) data */
};
/* font error numbers.
*/
enum
{
#define fnt_genNames 1
#include "ft_generr.h"
FNT_E_dummy
};
/* ft_font.c */
void fnt_register_errtab(pdc_core *pdc);
void fnt_init_font(fnt_font *font);
void fnt_cleanup_font(pdc_core *pdc, fnt_font *font);
void fnt_cleanup_fontimg(pdc_core *pdc, fnt_font *font);
int fnt_get_glyphid(int code, fnt_font *font);
int fnt_get_code(int gid, fnt_font *font);
int fnt_get_glyphwidth(int code, fnt_font *font);
int fnt_get_pdf_fonttype_code(const char *typenam);
const char *fnt_get_pdf_fonttype_name(int typecode);
const char *fnt_get_pdf_fonttype_desc(int typecode);
pdc_encodingvector *fnt_create_font_ev(pdc_core *pdc, fnt_font *font);
int fnt_check_weight(int weight);
int fnt_weightname2weight(const char *weightname);
int fnt_stemv2weight(int stemv);
const char *fnt_weight2weightname(int weight);
int fnt_macfontstyle2weight(int macfontstyle);
int fnt_weight2stemv(int weight);
void fnt_font_logg_widths(pdc_core *pdc, fnt_font *font);
void fnt_font_logg_protocol(pdc_core *pdc, fnt_font *font);
/* ft_corefont.c */
pdc_bool fnt_is_standard_font(const char *fontname);
const char *fnt_get_abb_std_fontname(const char *fontname);
void fnt_fill_font_metric(pdc_core *pdc, fnt_font *font, pdc_bool kerning,
const fnt_font_metric *metric);
const fnt_font_metric *fnt_get_core_metric(const char *fontname);
const char *fnt_get_abb_cjk_fontname(const char *fontname);
int fnt_get_preinstalled_cidfont(const char *fontname,
const fnt_font_metric **fontmetric);
const char **fnt_get_cid_widths_array(pdc_core *pdc, fnt_font *font);
/* ft_type1.c */
pdc_bool fnt_test_type1_font(pdc_core *pdc, const pdc_byte *img);
pdc_bool fnt_get_type1_encoding(pdc_core *pdc, fnt_font *font, int glyphflags);
#endif /* FT_FONT_H */
|
