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1 /* | 1 /* |
2 * Copyright (C) 2010 Red Hat, Inc. | 2 * Copyright © 2010 Red Hat, Inc. |
3 * | 3 * |
4 * This is part of HarfBuzz, a text shaping library. | 4 * This is part of HarfBuzz, a text shaping library. |
5 * | 5 * |
6 * Permission is hereby granted, without written agreement and without | 6 * Permission is hereby granted, without written agreement and without |
7 * license or royalty fees, to use, copy, modify, and distribute this | 7 * license or royalty fees, to use, copy, modify, and distribute this |
8 * software and its documentation for any purpose, provided that the | 8 * software and its documentation for any purpose, provided that the |
9 * above copyright notice and the following two paragraphs appear in | 9 * above copyright notice and the following two paragraphs appear in |
10 * all copies of this software. | 10 * all copies of this software. |
11 * | 11 * |
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR | 12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES | 13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN | 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 | 15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
16 * DAMAGE. | 16 * DAMAGE. |
17 * | 17 * |
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, | 18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND | 19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS | 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 | 21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | 22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
23 * | 23 * |
24 * Red Hat Author(s): Behdad Esfahbod | 24 * Red Hat Author(s): Behdad Esfahbod |
25 */ | 25 */ |
26 | 26 |
27 #ifndef HB_OT_HEAD_PRIVATE_HH | 27 #ifndef HB_OT_HEAD_TABLE_HH |
28 #define HB_OT_HEAD_PRIVATE_HH | 28 #define HB_OT_HEAD_TABLE_HH |
29 | 29 |
30 #include "hb-open-type-private.hh" | 30 #include "hb-open-type-private.hh" |
31 | 31 |
32 HB_BEGIN_DECLS | |
33 | 32 |
34 | 33 |
35 /* | 34 /* |
36 * head | 35 * head -- Font Header |
37 */ | 36 */ |
38 | 37 |
39 #define HB_OT_TAG_head HB_TAG('h','e','a','d') | 38 #define HB_OT_TAG_head HB_TAG('h','e','a','d') |
40 | 39 |
41 struct head | 40 struct head |
42 { | 41 { |
43 static const hb_tag_t Tag = HB_OT_TAG_head; | 42 static const hb_tag_t Tag = HB_OT_TAG_head; |
44 | 43 |
45 inline unsigned int get_upem (void) const { | 44 inline unsigned int get_upem (void) const { |
46 unsigned int upem = unitsPerEm; | 45 unsigned int upem = unitsPerEm; |
47 /* If no valid head table found, assume 1000, which matches typicaly Type1 u
sage. */ | 46 /* If no valid head table found, assume 1000, which matches typicaly Type1 u
sage. */ |
48 return 16 <= upem && upem <= 16384 ? upem : 1000; | 47 return 16 <= upem && upem <= 16384 ? upem : 1000; |
49 } | 48 } |
50 | 49 |
51 inline bool sanitize (hb_sanitize_context_t *c) { | 50 inline bool sanitize (hb_sanitize_context_t *c) { |
52 TRACE_SANITIZE (); | 51 TRACE_SANITIZE (); |
53 /* Shall we check for magicNumber here? Who cares? */ | |
54 return c->check_struct (this) && likely (version.major == 1); | 52 return c->check_struct (this) && likely (version.major == 1); |
55 } | 53 } |
56 | 54 |
57 private: | 55 private: |
58 FixedVersion version; /* Version of the head table--currently | 56 FixedVersion version; /* Version of the head table--currently |
59 * 0x00010000 for version 1.0. */ | 57 * 0x00010000 for version 1.0. */ |
60 FixedVersion fontRevision; /* Set by font manufacturer. */ | 58 FixedVersion fontRevision; /* Set by font manufacturer. */ |
61 ULONG checkSumAdjustment; /* To compute: set it to 0, sum the | 59 ULONG checkSumAdjustment; /* To compute: set it to 0, sum the |
62 * entire font as ULONG, then store | 60 * entire font as ULONG, then store |
63 * 0xB1B0AFBA - sum. */ | 61 * 0xB1B0AFBA - sum. */ |
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134 * 2: Like 1 but also contains neutrals; | 132 * 2: Like 1 but also contains neutrals; |
135 * -1: Only strongly right to left; | 133 * -1: Only strongly right to left; |
136 * -2: Like -1 but also contains neutral
s. */ | 134 * -2: Like -1 but also contains neutral
s. */ |
137 SHORT indexToLocFormat; /* 0 for short offsets, 1 for long. */ | 135 SHORT indexToLocFormat; /* 0 for short offsets, 1 for long. */ |
138 SHORT glyphDataFormat; /* 0 for current format. */ | 136 SHORT glyphDataFormat; /* 0 for current format. */ |
139 public: | 137 public: |
140 DEFINE_SIZE_STATIC (54); | 138 DEFINE_SIZE_STATIC (54); |
141 }; | 139 }; |
142 | 140 |
143 | 141 |
144 HB_END_DECLS | |
145 | 142 |
146 #endif /* HB_OT_HEAD_PRIVATE_HH */ | 143 #endif /* HB_OT_HEAD_TABLE_HH */ |
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