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1 /* | 1 /* |
2 * Copyright (c) 2012, Google Inc. All rights reserved. | 2 * Copyright (c) 2012, Google 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 are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 */ | 29 */ |
30 | 30 |
31 #ifndef WritingMode_h | 31 #ifndef WritingMode_h |
32 #define WritingMode_h | 32 #define WritingMode_h |
33 | 33 |
34 namespace blink { | 34 namespace blink { |
35 | 35 |
36 enum WritingMode { | 36 enum class WritingMode : unsigned { HorizontalTb, VerticalRl, VerticalLr }; |
aazzam
2016/12/22 02:18:23
It might be worth putting a comment here explainin
| |
37 TopToBottomWritingMode, | |
38 RightToLeftWritingMode, | |
39 LeftToRightWritingMode | |
40 }; | |
41 | 37 |
42 // Lines have horizontal orientation; modes horizontal-tb. | 38 // Lines have horizontal orientation; modes horizontal-tb. |
43 inline bool isHorizontalWritingMode(WritingMode writingMode) { | 39 inline bool isHorizontalWritingMode(WritingMode writingMode) { |
44 return writingMode == TopToBottomWritingMode; | 40 return writingMode == WritingMode::HorizontalTb; |
45 } | 41 } |
46 | 42 |
47 // Bottom of the line occurs earlier in the block; modes vertical-lr. | 43 // Bottom of the line occurs earlier in the block; modes vertical-lr. |
48 inline bool isFlippedLinesWritingMode(WritingMode writingMode) { | 44 inline bool isFlippedLinesWritingMode(WritingMode writingMode) { |
49 return writingMode == LeftToRightWritingMode; | 45 return writingMode == WritingMode::VerticalLr; |
50 } | 46 } |
51 | 47 |
52 // Block progression increases in the opposite direction to normal; modes | 48 // Block progression increases in the opposite direction to normal; modes |
53 // vertical-rl. | 49 // vertical-rl. |
54 inline bool isFlippedBlocksWritingMode(WritingMode writingMode) { | 50 inline bool isFlippedBlocksWritingMode(WritingMode writingMode) { |
55 return writingMode == RightToLeftWritingMode; | 51 return writingMode == WritingMode::VerticalRl; |
56 } | 52 } |
57 | 53 |
58 } // namespace blink | 54 } // namespace blink |
59 | 55 |
60 #endif // WritingMode_h | 56 #endif // WritingMode_h |
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