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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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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 // These values are named to match the CSS keywords they correspond to: namely | 36 // These values are named to match the CSS keywords they correspond to: namely |
37 // horizontal-tb, vertical-rl and vertical-lr. | 37 // horizontal-tb, vertical-rl and vertical-lr. |
38 // Since these names aren't very self-explanatory, where possible use the | 38 // Since these names aren't very self-explanatory, where possible use the |
39 // inline utility functions below. | 39 // inline utility functions below. |
40 enum class WritingMode : unsigned { HorizontalTb, VerticalRl, VerticalLr }; | 40 enum class WritingMode : unsigned { kHorizontalTb, kVerticalRl, kVerticalLr }; |
41 | 41 |
42 // Lines have horizontal orientation; modes horizontal-tb. | 42 // Lines have horizontal orientation; modes horizontal-tb. |
43 inline bool isHorizontalWritingMode(WritingMode writingMode) { | 43 inline bool isHorizontalWritingMode(WritingMode writingMode) { |
44 return writingMode == WritingMode::HorizontalTb; | 44 return writingMode == WritingMode::kHorizontalTb; |
45 } | 45 } |
46 | 46 |
47 // Bottom of the line occurs earlier in the block; modes vertical-lr. | 47 // Bottom of the line occurs earlier in the block; modes vertical-lr. |
48 inline bool isFlippedLinesWritingMode(WritingMode writingMode) { | 48 inline bool isFlippedLinesWritingMode(WritingMode writingMode) { |
49 return writingMode == WritingMode::VerticalLr; | 49 return writingMode == WritingMode::kVerticalLr; |
50 } | 50 } |
51 | 51 |
52 // Block progression increases in the opposite direction to normal; modes | 52 // Block progression increases in the opposite direction to normal; modes |
53 // vertical-rl. | 53 // vertical-rl. |
54 inline bool isFlippedBlocksWritingMode(WritingMode writingMode) { | 54 inline bool isFlippedBlocksWritingMode(WritingMode writingMode) { |
55 return writingMode == WritingMode::VerticalRl; | 55 return writingMode == WritingMode::kVerticalRl; |
56 } | 56 } |
57 | 57 |
58 } // namespace blink | 58 } // namespace blink |
59 | 59 |
60 #endif // WritingMode_h | 60 #endif // WritingMode_h |
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