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1 /* | 1 /* |
2 * Copyright (C) 2003, 2006 Apple Computer, Inc. All rights reserved. | 2 * Copyright (C) 2003, 2006 Apple Computer, Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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41 // http://unicode.org/reports/tr9/ | 41 // http://unicode.org/reports/tr9/ |
42 enum class TextDirection : uint8_t { kLtr = 0, kRtl = 1 }; | 42 enum class TextDirection : uint8_t { kLtr = 0, kRtl = 1 }; |
43 | 43 |
44 inline bool IsLtr(TextDirection direction) { | 44 inline bool IsLtr(TextDirection direction) { |
45 return direction == TextDirection::kLtr; | 45 return direction == TextDirection::kLtr; |
46 } | 46 } |
47 | 47 |
48 inline bool IsRtl(TextDirection direction) { | 48 inline bool IsRtl(TextDirection direction) { |
49 return direction != TextDirection::kLtr; | 49 return direction != TextDirection::kLtr; |
50 } | 50 } |
| 51 |
| 52 inline TextDirection DirectionFromLevel(unsigned level) { |
| 53 return level & 1 ? TextDirection::kRtl : TextDirection::kLtr; |
| 54 } |
51 } | 55 } |
52 | 56 |
53 #endif | 57 #endif |
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