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
|
/* Copyright (C) 1991, 1995, 1996, 1997 Aladdin Enterprises. All rights reserved.
This file is part of Aladdin Ghostscript.
Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author
or distributor accepts any responsibility for the consequences of using it,
or for whether it serves any particular purpose or works at all, unless he
or she says so in writing. Refer to the Aladdin Ghostscript Free Public
License (the "License") for full details.
Every copy of Aladdin Ghostscript must include a copy of the License,
normally in a plain ASCII text file named PUBLIC. The License grants you
the right to copy, modify and redistribute Aladdin Ghostscript, but only
under certain conditions described in the License. Among other things, the
License requires that the copyright notice and this notice be preserved on
all copies.
*/
/* zfont1.c */
/* Type 1 and Type 4 font creation operator */
#include "ghost.h"
#include "errors.h"
#include "oper.h"
#include "gxfixed.h"
#include "gsmatrix.h"
#include "gxdevice.h"
#include "gschar.h"
#include "gxfont.h"
#include "gxfont1.h"
#include "bfont.h"
#include "ialloc.h"
#include "idict.h"
#include "idparam.h"
#include "store.h"
/* Type 1 auxiliary procedures (defined in zchar1.c) */
extern int z1_subr_proc(P4(gs_font_type1 *, int, bool, gs_const_string *));
extern int z1_seac_proc(P3(gs_font_type1 *, int, gs_const_string *));
extern int z1_push_proc(P3(gs_font_type1 *, const fixed *, int));
extern int z1_pop_proc(P2(gs_font_type1 *, fixed *));
/* Default value of lenIV */
#define default_lenIV_1 4
#define default_lenIV_2 (-1)
/* Private utilities */
private uint
subr_bias(const ref *psubrs)
{ uint size = r_size(psubrs);
return (size < 1240 ? 107 : size < 33900 ? 1131 : 32768);
}
/* Build a Type 1 or Type 4 font. */
private int
buildfont1or4(os_ptr op, build_proc_refs *pbuild, font_type ftype,
build_font_options_t options)
{ gs_type1_data data1;
static ref no_subrs;
ref *pothersubrs = &no_subrs;
ref *psubrs = &no_subrs;
ref *pglobalsubrs = &no_subrs;
ref *pprivate;
gs_font_type1 *pfont;
font_data *pdata;
int code;
check_type(*op, t_dictionary);
if ( dict_find_string(op, "Private", &pprivate) <= 0 ||
!r_has_type(pprivate, t_dictionary)
)
return_error(e_invalidfont);
make_empty_array(&no_subrs, 0);
if ( dict_find_string(pprivate, "OtherSubrs", &pothersubrs) > 0 )
{ if ( !r_is_array(pothersubrs) )
return_error(e_typecheck);
}
if ( dict_find_string(pprivate, "Subrs", &psubrs) > 0 )
{ if ( !r_is_array(psubrs) )
return_error(e_typecheck);
}
if ( (code = dict_int_param(op, "CharstringType", 1, 2, 1,
&data1.CharstringType)) < 0
)
return code;
/* Get information specific to Type 2 charstrings. */
if ( data1.CharstringType == 2 )
{ float dwx, nwx;
data1.subroutineNumberBias = subr_bias(psubrs);
if ( dict_find_string(pprivate, "GlobalSubrs", &pglobalsubrs) > 0 )
{ if ( !r_is_array(pglobalsubrs) )
return_error(e_typecheck);
}
data1.gsubrNumberBias = subr_bias(pglobalsubrs);
if ( (code = dict_uint_param(pprivate, "gsubrNumberBias",
0, max_uint, data1.gsubrNumberBias,
&data1.gsubrNumberBias)) < 0 ||
(code = dict_float_param(pprivate, "defaultWidthX", 0.0,
&dwx)) < 0 ||
(code = dict_float_param(pprivate, "nominalWidthX", 0.0,
&nwx)) < 0
)
return code;
data1.defaultWidthX = float2fixed(dwx);
data1.nominalWidthX = float2fixed(nwx);
{ ref *pirs;
if ( dict_find_string(pprivate, "initialRandomSeed", &pirs) <= 0 )
data1.initialRandomSeed = 0;
else if ( !r_has_type(pirs, t_integer) )
return_error(e_typecheck);
else
data1.initialRandomSeed = pirs->value.intval;
}
data1.lenIV = default_lenIV_2;
}
else
{ data1.subroutineNumberBias = 0;
data1.gsubrNumberBias = 0;
data1.lenIV = default_lenIV_1;
}
/* Get the rest of the information from the Private dictionary. */
if ( (code = dict_int_param(pprivate, "lenIV", -1, 255, data1.lenIV,
&data1.lenIV)) < 0 ||
(code = dict_uint_param(pprivate, "subroutineNumberBias",
0, max_uint, data1.subroutineNumberBias,
&data1.subroutineNumberBias)) < 0 ||
(code = dict_int_param(pprivate, "BlueFuzz", 0, 1999, 1,
&data1.BlueFuzz)) < 0 ||
(code = dict_float_param(pprivate, "BlueScale", 0.039625,
&data1.BlueScale)) < 0 ||
(code = dict_float_param(pprivate, "BlueShift", 7.0,
&data1.BlueShift)) < 0 ||
(code = data1.BlueValues.count = dict_float_array_param(pprivate,
"BlueValues", max_BlueValues * 2,
&data1.BlueValues.values[0], NULL)) < 0 ||
(code = dict_float_param(pprivate, "ExpansionFactor", 0.06,
&data1.ExpansionFactor)) < 0 ||
(code = data1.FamilyBlues.count = dict_float_array_param(pprivate,
"FamilyBlues", max_FamilyBlues * 2,
&data1.FamilyBlues.values[0], NULL)) < 0 ||
(code = data1.FamilyOtherBlues.count = dict_float_array_param(pprivate,
"FamilyOtherBlues", max_FamilyOtherBlues * 2,
&data1.FamilyOtherBlues.values[0], NULL)) < 0 ||
(code = dict_bool_param(pprivate, "ForceBold", false,
&data1.ForceBold)) < 0 ||
(code = dict_int_param(pprivate, "LanguageGroup", 0, 1, 0,
&data1.LanguageGroup)) < 0 ||
(code = data1.OtherBlues.count = dict_float_array_param(pprivate,
"OtherBlues", max_OtherBlues * 2,
&data1.OtherBlues.values[0], NULL)) < 0 ||
(code = dict_bool_param(pprivate, "RndStemUp", true,
&data1.RndStemUp)) < 0 ||
(code = data1.StdHW.count = dict_float_array_param(pprivate,
"StdHW", 1, &data1.StdHW.values[0], NULL)) < 0 ||
(code = data1.StdVW.count = dict_float_array_param(pprivate,
"StdVW", 1, &data1.StdVW.values[0], NULL)) < 0 ||
(code = data1.StemSnapH.count = dict_float_array_param(pprivate,
"StemSnapH", max_StemSnap,
&data1.StemSnapH.values[0], NULL)) < 0 ||
(code = data1.StemSnapV.count = dict_float_array_param(pprivate,
"StemSnapV", max_StemSnap,
&data1.StemSnapV.values[0], NULL)) < 0 ||
/* The WeightVector is in the font dictionary, not Private. */
(code = data1.WeightVector.count = dict_float_array_param(op,
"WeightVector", max_WeightVector,
data1.WeightVector.values, NULL)) < 0
)
return code;
/*
* According to section 5.6 of the "Adobe Type 1 Font Format",
* there is a requirement that BlueScale times the maximum
* alignment zone height must be less than 1. Some fonts
* produced by Fontographer have ridiculously large BlueScale
* values, so we force BlueScale back into range here.
*/
{ float max_zone_height = 1.0;
float zone_height;
int i;
#define scan_zone(z)\
for ( i = 0; i < data1.z.count; i += 2 )\
if ( (zone_height = data1.z.values[i+1] - data1.z.values[i]) > max_zone_height )\
max_zone_height = zone_height
scan_zone(BlueValues);
scan_zone(OtherBlues);
scan_zone(FamilyBlues);
scan_zone(FamilyOtherBlues);
if ( data1.BlueScale * max_zone_height > 1.0 )
data1.BlueScale = 1.0 / max_zone_height;
}
/* Do the work common to primitive font types. */
code = build_gs_primitive_font(op, (gs_font_base **)&pfont, ftype,
&st_gs_font_type1, pbuild, options);
if ( code != 0 )
return code;
/* This is a new font, fill it in. */
pdata = pfont_data(pfont);
pfont->data = data1;
ref_assign(&pdata->u.type1.OtherSubrs, pothersubrs);
ref_assign(&pdata->u.type1.Subrs, psubrs);
ref_assign(&pdata->u.type1.GlobalSubrs, pglobalsubrs);
pfont->data.subr_proc = z1_subr_proc;
pfont->data.seac_proc = z1_seac_proc;
pfont->data.push_proc = z1_push_proc;
pfont->data.pop_proc = z1_pop_proc;
pfont->data.proc_data = (char *)pdata;
return define_gs_font((gs_font *)pfont);
}
/* <string|name> <font_dict> .buildfont1 <string|name> <font> */
/* Build a type 1 (Adobe encrypted) font. */
private int
zbuildfont1(os_ptr op)
{ build_proc_refs build;
int code =
build_proc_name_refs(&build,
"%Type1BuildChar", "%Type1BuildGlyph");
if ( code < 0 )
return code;
return buildfont1or4(op, &build, ft_encrypted, bf_notdef_required);
}
/* <string|name> <font_dict> .buildfont4 <string|name> <font> */
/* Build a type 4 (disk-based Adobe encrypted) font. */
private int
zbuildfont4(os_ptr op)
{ build_proc_refs build;
int code = build_gs_font_procs(op, &build);
if ( code < 0 )
return code;
return buildfont1or4(op, &build, ft_disk_based, bf_options_none);
}
/* ------ Initialization procedure ------ */
BEGIN_OP_DEFS(zfont1_op_defs) {
{"2.buildfont1", zbuildfont1},
{"2.buildfont4", zbuildfont4},
END_OP_DEFS(0) }
|
