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
|
/* Copyright (C) 2000, 2001 Aladdin Enterprises. All rights reserved.
This software is provided AS-IS with no warranty, either express or
implied.
This software is distributed under license and may not be copied,
modified or distributed except as expressly authorized under the terms
of the license contained in the file LICENSE in this distribution.
For more information about licensing, please refer to
http://www.ghostscript.com/licensing/. For information on
commercial licensing, go to http://www.artifex.com/licensing/ or
contact Artifex Software, Inc., 101 Lucas Valley Road #110,
San Rafael, CA 94903, U.S.A., +1(415)492-9861.
*/
/* $Id$ */
/* CIDFontType 1 and 2 operators */
#include "memory_.h"
#include "ghost.h"
#include "oper.h"
#include "gsmatrix.h"
#include "gsccode.h"
#include "gsstruct.h"
#include "gxfcid.h"
#include "bfont.h"
#include "icid.h"
#include "idict.h"
#include "idparam.h"
#include "ifcid.h"
#include "ifont42.h"
#include "store.h"
/* ---------------- CIDFontType 1 (FontType 10) ---------------- */
/* <string|name> <font_dict> .buildfont10 <string|name> <font> */
private int
zbuildfont10(i_ctx_t *i_ctx_p)
{
os_ptr op = osp;
build_proc_refs build;
int code = build_gs_font_procs(op, &build);
gs_cid_system_info_t cidsi;
gs_font_base *pfont;
if (code < 0)
return code;
code = cid_font_system_info_param(&cidsi, op);
if (code < 0)
return code;
make_null(&build.BuildChar); /* only BuildGlyph */
code = build_gs_simple_font(i_ctx_p, op, &pfont, ft_CID_user_defined,
&st_gs_font_cid1, &build,
bf_Encoding_optional |
bf_UniqueID_ignored);
if (code < 0)
return code;
((gs_font_cid1 *)pfont)->cidata.CIDSystemInfo = cidsi;
return define_gs_font((gs_font *)pfont);
}
/* ---------------- CIDFontType 2 (FontType 11) ---------------- */
/* ------ Accessing ------ */
/* Map a glyph CID to a TrueType glyph number using the CIDMap. */
private int
z11_CIDMap_proc(gs_font_cid2 *pfont, gs_glyph glyph)
{
const ref *pcidmap = &pfont_data(pfont)->u.type42.CIDMap;
ulong cid = glyph - gs_min_cid_glyph;
int gdbytes = pfont->cidata.common.GDBytes;
int gnum = 0;
const byte *data;
int i, code;
ref rcid;
ref *prgnum;
switch (r_type(pcidmap)) {
case t_string:
if (cid >= r_size(pcidmap) / gdbytes)
return_error(e_rangecheck);
data = pcidmap->value.const_bytes + cid * gdbytes;
break;
case t_integer:
return cid + pcidmap->value.intval;
case t_dictionary:
make_int(&rcid, cid);
code = dict_find(pcidmap, &rcid, &prgnum);
if (code <= 0)
return (code < 0 ? code : gs_note_error(e_undefined));
if (!r_has_type(prgnum, t_integer))
return_error(e_typecheck);
return prgnum->value.intval;
default: /* array type */
code = string_array_access_proc(pcidmap, 1, cid * gdbytes,
gdbytes, &data);
if (code < 0)
return code;
}
for (i = 0; i < gdbytes; ++i)
gnum = (gnum << 8) + data[i];
return gnum;
}
/* Handle MetricsCount when accessing outline or metrics information. */
private int
z11_get_outline(gs_font_type42 * pfont, uint glyph_index,
gs_glyph_data_t *pgd)
{
gs_font_cid2 *const pfcid = (gs_font_cid2 *)pfont;
int skip = pfcid->cidata.MetricsCount << 1;
int code = pfcid->cidata.orig_procs.get_outline(pfont, glyph_index, pgd);
if (code >= 0) {
uint size = pgd->bits.size;
if (size <= skip) {
gs_glyph_data_free(pgd, "z11_get_outline");
gs_glyph_data_from_null(pgd);
} else {
gs_glyph_data_substring(pgd, skip, size - skip);
}
}
return code;
}
#define GET_U16_MSB(p) (((uint)((p)[0]) << 8) + (p)[1])
#define GET_S16_MSB(p) (int)((GET_U16_MSB(p) ^ 0x8000) - 0x8000)
private int
z11_get_metrics(gs_font_type42 * pfont, uint glyph_index, int wmode,
float sbw[4])
{
gs_font_cid2 *const pfcid = (gs_font_cid2 *)pfont;
int skip = pfcid->cidata.MetricsCount << 1;
gs_glyph_data_t gdata;
const byte *pmetrics;
int lsb, width;
int code = 0;
if (wmode >= skip >> 2 ||
(code = pfcid->cidata.orig_procs.get_outline(pfont, glyph_index, &gdata)) < 0 ||
gdata.bits.size < skip
)
return pfcid->cidata.orig_procs.get_metrics(pfont, glyph_index, wmode,
sbw);
pmetrics = gdata.bits.data + skip - 4 - (wmode << 2);
lsb = GET_S16_MSB(pmetrics + 2);
width = GET_U16_MSB(pmetrics + 0);
{
double factor = 1.0 / pfont->data.unitsPerEm;
if (wmode) {
sbw[0] = 0, sbw[1] = -lsb * factor;
sbw[2] = 0, sbw[3] = -width * factor;
} else {
sbw[0] = lsb * factor, sbw[1] = 0;
sbw[2] = width * factor, sbw[3] = 0;
}
}
gs_glyph_data_free(&gdata, "z11_get_metrics");
return 0;
}
/* ------ Defining ------ */
/* <string|name> <font_dict> .buildfont11 <string|name> <font> */
private int
zbuildfont11(i_ctx_t *i_ctx_p)
{
os_ptr op = osp;
gs_font_cid_data common;
gs_font_type42 *pfont;
gs_font_cid2 *pfcid;
int MetricsCount;
ref rcidmap, ignore_gdir;
int code = cid_font_data_param(op, &common, &ignore_gdir);
if (code < 0 ||
(code = dict_int_param(op, "MetricsCount", 0, 4, 0, &MetricsCount)) < 0
)
return code;
if (MetricsCount & 1) /* only allowable values are 0, 2, 4 */
return_error(e_rangecheck);
code = font_string_array_param(op, "CIDMap", &rcidmap);
switch (code) {
case 0: /* in PLRM3 */
gdb:
/* GDBytes is required for indexing a string or string array. */
if (common.GDBytes == 0)
return_error(e_rangecheck);
break;
default:
return code;
case e_typecheck:
switch (r_type(&rcidmap)) {
case t_string: /* in PLRM3 */
goto gdb;
case t_dictionary: /* added in 3011 */
case t_integer: /* added in 3011 */
break;
default:
return code;
}
break;
}
code = build_gs_TrueType_font(i_ctx_p, op, &pfont, ft_CID_TrueType,
&st_gs_font_cid2,
(const char *)0, "%Type11BuildGlyph",
bf_Encoding_optional |
bf_UniqueID_ignored |
bf_CharStrings_optional);
if (code < 0)
return code;
pfcid = (gs_font_cid2 *)pfont;
pfcid->cidata.common = common;
pfcid->cidata.MetricsCount = MetricsCount;
ref_assign(&pfont_data(pfont)->u.type42.CIDMap, &rcidmap);
pfcid->cidata.CIDMap_proc = z11_CIDMap_proc;
if (MetricsCount) {
/* "Wrap" the glyph accessor procedures. */
pfcid->cidata.orig_procs.get_outline = pfont->data.get_outline;
pfont->data.get_outline = z11_get_outline;
pfcid->cidata.orig_procs.get_metrics = pfont->data.get_metrics;
pfont->data.get_metrics = z11_get_metrics;
}
return define_gs_font((gs_font *)pfont);
}
/* <cid11font> <cid> .type11mapcid <glyph_index> */
private int
ztype11mapcid(i_ctx_t *i_ctx_p)
{
os_ptr op = osp;
gs_font *pfont;
int code = font_param(op - 1, &pfont);
if (code < 0)
return code;
check_type(*op, t_integer);
#if defined(TEST)
/* Allow a Type 42 font here, for testing .wrapfont. */
if (pfont->FontType == ft_TrueType) {
/* Use the CID as the glyph index. */
if (op->value.intval < 0 ||
op->value.intval >= ((gs_font_type42 *)pfont)->data.numGlyphs
)
return_error(e_rangecheck);
code = (int)op->value.intval;
} else
#endif
{
if (pfont->FontType != ft_CID_TrueType)
return_error(e_invalidfont);
code = z11_CIDMap_proc((gs_font_cid2 *)pfont,
(gs_glyph)(gs_min_cid_glyph + op->value.intval));
}
if (code < 0)
return code;
make_int(op - 1, code);
pop(1);
return 0;
}
/* ------ Initialization procedure ------ */
const op_def zfcid1_op_defs[] =
{
{"2.buildfont10", zbuildfont10},
{"2.buildfont11", zbuildfont11},
{"2.type11mapcid", ztype11mapcid},
op_def_end(0)
};
|
