1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17// Definitions internal to Minikin
18
19#include "MinikinInternal.h"
20#include "HbFontCache.h"
21#include "generated/UnicodeData.h"
22
23#include <cutils/log.h>
24
25namespace android {
26
27Mutex gMinikinLock;
28
29void assertMinikinLocked() {
30#ifdef ENABLE_RACE_DETECTION
31    LOG_ALWAYS_FATAL_IF(gMinikinLock.tryLock() == 0);
32#endif
33}
34
35bool isEmoji(uint32_t c) {
36    const size_t length = sizeof(generated::EMOJI_LIST) / sizeof(generated::EMOJI_LIST[0]);
37    return std::binary_search(generated::EMOJI_LIST, generated::EMOJI_LIST + length, c);
38}
39
40// Based on Modifiers from http://www.unicode.org/L2/L2016/16011-data-file.txt
41bool isEmojiModifier(uint32_t c) {
42    return (0x1F3FB <= c && c <= 0x1F3FF);
43}
44
45// Based on Emoji_Modifier_Base from
46// http://www.unicode.org/Public/emoji/3.0/emoji-data.txt
47bool isEmojiBase(uint32_t c) {
48    if (0x261D <= c && c <= 0x270D) {
49        return (c == 0x261D || c == 0x26F9 || (0x270A <= c && c <= 0x270D));
50    } else if (0x1F385 <= c && c <= 0x1F93E) {
51        return (c == 0x1F385
52                || (0x1F3C3 <= c && c <= 0x1F3C4)
53                || (0x1F3CA <= c && c <= 0x1F3CB)
54                || (0x1F442 <= c && c <= 0x1F443)
55                || (0x1F446 <= c && c <= 0x1F450)
56                || (0x1F466 <= c && c <= 0x1F469)
57                || c == 0x1F46E
58                || (0x1F470 <= c && c <= 0x1F478)
59                || c == 0x1F47C
60                || (0x1F481 <= c && c <= 0x1F483)
61                || (0x1F485 <= c && c <= 0x1F487)
62                || c == 0x1F4AA
63                || c == 0x1F575
64                || c == 0x1F57A
65                || c == 0x1F590
66                || (0x1F595 <= c && c <= 0x1F596)
67                || (0x1F645 <= c && c <= 0x1F647)
68                || (0x1F64B <= c && c <= 0x1F64F)
69                || c == 0x1F6A3
70                || (0x1F6B4 <= c && c <= 0x1F6B6)
71                || c == 0x1F6C0
72                || (0x1F918 <= c && c <= 0x1F91E)
73                || c == 0x1F926
74                || c == 0x1F930
75                || (0x1F933 <= c && c <= 0x1F939)
76                || (0x1F93B <= c && c <= 0x1F93E));
77    } else {
78        return false;
79    }
80}
81
82hb_blob_t* getFontTable(MinikinFont* minikinFont, uint32_t tag) {
83    assertMinikinLocked();
84    hb_font_t* font = getHbFontLocked(minikinFont);
85    hb_face_t* face = hb_font_get_face(font);
86    hb_blob_t* blob = hb_face_reference_table(face, tag);
87    hb_font_destroy(font);
88    return blob;
89}
90
91}
92