1 /*
2  * Copyright © 2009,2010  Red Hat, Inc.
3  * Copyright © 2010,2011,2013  Google, Inc.
4  *
5  *  This is part of HarfBuzz, a text shaping library.
6  *
7  * Permission is hereby granted, without written agreement and without
8  * license or royalty fees, to use, copy, modify, and distribute this
9  * software and its documentation for any purpose, provided that the
10  * above copyright notice and the following two paragraphs appear in
11  * all copies of this software.
12  *
13  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
14  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
15  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
16  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
17  * DAMAGE.
18  *
19  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
20  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
21  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
22  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
23  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
24  *
25  * Red Hat Author(s): Behdad Esfahbod
26  * Google Author(s): Behdad Esfahbod
27  */
28 
29 #include "hb.hh"
30 
31 #ifndef HB_NO_AAT_SHAPE
32 
33 #include "hb-aat-map.hh"
34 
35 #include "hb-aat-layout.hh"
36 
37 
add_feature(hb_tag_t tag,unsigned int value)38 void hb_aat_map_builder_t::add_feature (hb_tag_t tag,
39 					unsigned int value)
40 {
41   if (tag == HB_TAG ('a','a','l','t'))
42   {
43     feature_info_t *info = features.push();
44     info->type = HB_AAT_LAYOUT_FEATURE_TYPE_CHARACTER_ALTERNATIVES;
45     info->setting = (hb_aat_layout_feature_selector_t) value;
46     return;
47   }
48 
49   const hb_aat_feature_mapping_t *mapping = hb_aat_layout_find_feature_mapping (tag);
50   if (!mapping) return;
51 
52   feature_info_t *info = features.push();
53   info->type = mapping->aatFeatureType;
54   info->setting = value ? mapping->selectorToEnable : mapping->selectorToDisable;
55 }
56 
57 void
compile(hb_aat_map_t & m)58 hb_aat_map_builder_t::compile (hb_aat_map_t  &m)
59 {
60   /* Sort features and merge duplicates */
61   if (features.length)
62   {
63     features.qsort ();
64     unsigned int j = 0;
65     for (unsigned int i = 1; i < features.length; i++)
66       if (features[i].type != features[j].type)
67 	features[++j] = features[i];
68     features.shrink (j + 1);
69   }
70 
71   hb_aat_layout_compile_map (this, &m);
72 }
73 
74 
75 #endif
76