1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation. Oracle designates this
7 * particular file as subject to the "Classpath" exception as provided
8 * by Oracle in the LICENSE file that accompanied this code.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 */
24
25 // This file is available under and governed by the GNU General Public
26 // License version 2 only, as published by the Free Software Foundation.
27 // However, the following notice accompanied the original version of this
28 // file:
29 //
30 /*
31 * Copyright © 2009 Red Hat, Inc.
32 * Copyright © 2011 Google, Inc.
33 *
34 * This is part of HarfBuzz, a text shaping library.
35 *
36 * Permission is hereby granted, without written agreement and without
37 * license or royalty fees, to use, copy, modify, and distribute this
38 * software and its documentation for any purpose, provided that the
39 * above copyright notice and the following two paragraphs appear in
40 * all copies of this software.
41 *
42 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
43 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
44 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
45 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
46 * DAMAGE.
47 *
48 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
49 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
50 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
51 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
52 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
53 *
54 * Red Hat Author(s): Behdad Esfahbod
55 * Google Author(s): Behdad Esfahbod
56 */
57
58 #ifndef HB_FACE_PRIVATE_HH
59 #define HB_FACE_PRIVATE_HH
60
61 #include "hb-private.hh"
62
63 #include "hb-object-private.hh"
64 #include "hb-shaper-private.hh"
65 #include "hb-shape-plan-private.hh"
66
67
68 /*
69 * hb_face_t
70 */
71
72 struct hb_face_t {
73 hb_object_header_t header;
74 ASSERT_POD ();
75
76 hb_bool_t immutable;
77
78 hb_reference_table_func_t reference_table_func;
79 void *user_data;
80 hb_destroy_func_t destroy;
81
82 unsigned int index;
83 mutable unsigned int upem;
84 mutable unsigned int num_glyphs;
85
86 struct hb_shaper_data_t shaper_data;
87
88 struct plan_node_t {
89 hb_shape_plan_t *shape_plan;
90 plan_node_t *next;
91 } *shape_plans;
92
93
94 inline hb_blob_t *reference_table (hb_tag_t tag) const
95 {
96 hb_blob_t *blob;
97
98 if (unlikely (!reference_table_func))
99 return hb_blob_get_empty ();
100
101 blob = reference_table_func (/*XXX*/const_cast<hb_face_t *> (this), tag, user_data);
102 if (unlikely (!blob))
103 return hb_blob_get_empty ();
104
105 return blob;
106 }
107
108 inline HB_PURE_FUNC unsigned int get_upem (void) const
109 {
110 if (unlikely (!upem))
111 load_upem ();
112 return upem;
113 }
114
115 inline unsigned int get_num_glyphs (void) const
116 {
117 if (unlikely (num_glyphs == (unsigned int) -1))
118 load_num_glyphs ();
119 return num_glyphs;
120 }
121
122 private:
123 HB_INTERNAL void load_upem (void) const;
124 HB_INTERNAL void load_num_glyphs (void) const;
125 };
126
127 extern HB_INTERNAL const hb_face_t _hb_face_nil;
128
129 #define HB_SHAPER_DATA_CREATE_FUNC_EXTRA_ARGS
130 #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_PROTOTYPE(shaper, face);
131 #include "hb-shaper-list.hh"
132 #undef HB_SHAPER_IMPLEMENT
133 #undef HB_SHAPER_DATA_CREATE_FUNC_EXTRA_ARGS
134
135
136 #endif /* HB_FACE_PRIVATE_HH */