1 /*
2 * Copyright © 2018 Google, Inc.
3 *
4 * This is part of HarfBuzz, a text shaping library.
5 *
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
11 *
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
16 * DAMAGE.
17 *
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
23 *
24 * Google Author(s): Behdad Esfahbod
25 */
26
27 #include "hb.hh"
28
29 #include "hb-open-type.hh"
30 #include "hb-face.hh"
31
32 #include "hb-aat-layout-common.hh"
33 #include "hb-aat-layout-feat-table.hh"
34 #include "hb-ot-layout-common.hh"
35 #include "hb-ot-cmap-table.hh"
36 #include "hb-ot-head-table.hh"
37 #include "hb-ot-maxp-table.hh"
38
39 #ifndef HB_NO_VISIBILITY
40
41 hb_vector_size_impl_t const _hb_NullPool[(HB_NULL_POOL_SIZE + sizeof (hb_vector_size_impl_t) - 1) / sizeof (hb_vector_size_impl_t)] = {};
42 /*thread_local*/ hb_vector_size_impl_t _hb_CrapPool[(HB_NULL_POOL_SIZE + sizeof (hb_vector_size_impl_t) - 1) / sizeof (hb_vector_size_impl_t)] = {};
43
44 DEFINE_NULL_NAMESPACE_BYTES (OT, Index) = {0xFF,0xFF};
45 DEFINE_NULL_NAMESPACE_BYTES (OT, LangSys) = {0x00,0x00, 0xFF,0xFF, 0x00,0x00};
46 DEFINE_NULL_NAMESPACE_BYTES (OT, RangeRecord) = {0x00,0x01, 0x00,0x00, 0x00, 0x00};
47 DEFINE_NULL_NAMESPACE_BYTES (OT, CmapSubtableLongGroup) = {0x00,0x00,0x00,0x01, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00};
48 DEFINE_NULL_NAMESPACE_BYTES (AAT, SettingName) = {0xFF,0xFF, 0xFF,0xFF};
49 /* Hand-coded because Lookup is a template. Sad. */
50 const unsigned char _hb_Null_AAT_Lookup[2] = {0xFF, 0xFF};
51
52
53 unsigned int
load_num_glyphs() const54 hb_face_t::load_num_glyphs () const
55 {
56 hb_sanitize_context_t c = hb_sanitize_context_t ();
57 c.set_num_glyphs (0); /* So we don't recurse ad infinitum. */
58 hb_blob_t *maxp_blob = c.reference_table<OT::maxp> (this);
59 const OT::maxp *maxp_table = maxp_blob->as<OT::maxp> ();
60
61 unsigned int ret = maxp_table->get_num_glyphs ();
62 num_glyphs.set_relaxed (ret);
63 hb_blob_destroy (maxp_blob);
64 return ret;
65 }
66
67 unsigned int
load_upem() const68 hb_face_t::load_upem () const
69 {
70 unsigned int ret = table.head->get_upem ();
71 upem.set_relaxed (ret);
72 return ret;
73 }
74
75 #endif
76