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
|
/*
* Copyright © 2018 Google, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Google Author(s): Garret Rieger, Roderick Sheeter
*/
#ifndef HB_SUBSET_PLAN_HH
#define HB_SUBSET_PLAN_HH
#include "hb.hh"
#include "hb-subset.h"
#include "hb-subset-input.hh"
#include "hb-map.hh"
struct hb_subset_plan_t
{
hb_object_header_t header;
ASSERT_POD ();
bool drop_hints : 1;
bool drop_layout : 1;
// For each cp that we'd like to retain maps to the corresponding gid.
hb_set_t *unicodes;
hb_vector_t<hb_codepoint_t> glyphs;
hb_set_t *glyphset;
hb_map_t *codepoint_to_glyph;
hb_map_t *glyph_map;
// Plan is only good for a specific source/dest so keep them with it
hb_face_t *source;
hb_face_t *dest;
inline bool
new_gid_for_codepoint (hb_codepoint_t codepoint,
hb_codepoint_t *new_gid) const
{
hb_codepoint_t old_gid = codepoint_to_glyph->get (codepoint);
if (old_gid == HB_MAP_VALUE_INVALID)
return false;
return new_gid_for_old_gid (old_gid, new_gid);
}
inline bool
new_gid_for_old_gid (hb_codepoint_t old_gid,
hb_codepoint_t *new_gid) const
{
hb_codepoint_t gid = glyph_map->get (old_gid);
if (gid == HB_MAP_VALUE_INVALID)
return false;
*new_gid = gid;
return true;
}
inline bool
add_table (hb_tag_t tag,
hb_blob_t *contents)
{
hb_blob_t *source_blob = source->reference_table (tag);
DEBUG_MSG(SUBSET, nullptr, "add table %c%c%c%c, dest %d bytes, source %d bytes",
HB_UNTAG(tag),
hb_blob_get_length (contents),
hb_blob_get_length (source_blob));
hb_blob_destroy (source_blob);
return hb_face_builder_add_table (dest, tag, contents);
}
};
typedef struct hb_subset_plan_t hb_subset_plan_t;
HB_INTERNAL hb_subset_plan_t *
hb_subset_plan_create (hb_face_t *face,
hb_subset_input_t *input);
HB_INTERNAL void
hb_subset_plan_destroy (hb_subset_plan_t *plan);
#endif /* HB_SUBSET_PLAN_HH */
|
