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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef NGWritingMode_h | 5 #ifndef NGWritingMode_h |
6 #define NGWritingMode_h | 6 #define NGWritingMode_h |
7 | 7 |
8 #include "core/CoreExport.h" | 8 #include "core/CoreExport.h" |
9 #include "platform/text/WritingMode.h" | 9 #include "platform/text/WritingMode.h" |
10 | 10 |
11 namespace blink { | 11 namespace blink { |
12 | 12 |
13 enum NGWritingMode { | 13 enum NGWritingMode { |
14 kHorizontalTopBottom = 0, | 14 kHorizontalTopBottom = 0, |
15 kVerticalRightLeft = 1, | 15 kVerticalRightLeft = 1, |
16 kVerticalLeftRight = 2, | 16 kVerticalLeftRight = 2, |
17 kSidewaysRightLeft = 3, | 17 kSidewaysRightLeft = 3, |
18 kSidewaysLeftRight = 4 | 18 kSidewaysLeftRight = 4 |
19 }; | 19 }; |
20 | 20 |
21 CORE_EXPORT NGWritingMode FromPlatformWritingMode(WritingMode); | 21 CORE_EXPORT NGWritingMode FromPlatformWritingMode(WritingMode); |
22 | 22 |
| 23 // Lines have horizontal orientation; modes horizontal-tb. |
| 24 inline bool IsHorizontalWritingMode(NGWritingMode writingMode) { |
| 25 return writingMode == NGWritingMode::kHorizontalTopBottom; |
| 26 } |
| 27 |
23 // Whether the child and the containing block are parallel to each other. | 28 // Whether the child and the containing block are parallel to each other. |
24 // Example: vertical-rl and vertical-lr | 29 // Example: vertical-rl and vertical-lr |
25 bool IsParallelWritingMode(NGWritingMode a, NGWritingMode b); | 30 bool IsParallelWritingMode(NGWritingMode a, NGWritingMode b); |
26 | 31 |
27 } // namespace blink | 32 } // namespace blink |
28 | 33 |
29 #endif // NGWritingMode_h | 34 #endif // NGWritingMode_h |
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