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Side by Side Diff: base/i18n/bidi_line_iterator.h

Issue 6249007: Move BiDiLineIterator to base/i18n/ directory. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: rebase and fix the conflicts Created 9 years, 11 months ago
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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 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 APP_BIDI_LINE_ITERATOR_H_ 5 #ifndef BASE_I18N_BIDI_LINE_ITERATOR_H_
6 #define APP_BIDI_LINE_ITERATOR_H_ 6 #define BASE_I18N_BIDI_LINE_ITERATOR_H_
7 #pragma once 7 #pragma once
8 8
9 #include <string> 9 #include <string>
10 10
11 #include "unicode/ubidi.h" 11 #include "unicode/ubidi.h"
tony 2011/01/18 19:24:29 What happened when you tried to move this include
tfarina 2011/01/18 19:34:47 As I told to Brett: "It's possible to forward this
12 12
13 #include "base/basictypes.h" 13 #include "base/basictypes.h"
14 #include "base/string16.h" 14 #include "base/string16.h"
15 15
16 namespace base {
17 namespace i18n {
18
16 // A simple wrapper class for the bidirectional iterator of ICU. 19 // A simple wrapper class for the bidirectional iterator of ICU.
17 // This class uses the bidirectional iterator of ICU to split a line of 20 // This class uses the bidirectional iterator of ICU to split a line of
18 // bidirectional texts into visual runs in its display order. 21 // bidirectional texts into visual runs in its display order.
19 class BiDiLineIterator { 22 class BiDiLineIterator {
20 public: 23 public:
21 BiDiLineIterator() : bidi_(NULL) { } 24 BiDiLineIterator();
22 ~BiDiLineIterator(); 25 ~BiDiLineIterator();
23 26
24 // Initializes the bidirectional iterator with the specified text. Returns 27 // Initializes the bidirectional iterator with the specified text. Returns
25 // whether initialization succeeded. 28 // whether initialization succeeded.
26 UBool Open(const string16& text, bool right_to_left, bool url); 29 bool Open(const string16& text, bool right_to_left, bool url);
27 30
28 // Returns the number of visual runs in the text, or zero on error. 31 // Returns the number of visual runs in the text, or zero on error.
29 int CountRuns(); 32 int CountRuns();
30 33
31 // Gets the logical offset, length, and direction of the specified visual run. 34 // Gets the logical offset, length, and direction of the specified visual run.
32 UBiDiDirection GetVisualRun(int index, int* start, int* length); 35 UBiDiDirection GetVisualRun(int index, int* start, int* length);
33 36
34 // Given a start position, figure out where the run ends (and the BiDiLevel). 37 // Given a start position, figure out where the run ends (and the BiDiLevel).
35 void GetLogicalRun(int start, int* end, UBiDiLevel* level); 38 void GetLogicalRun(int start, int* end, UBiDiLevel* level);
36 39
37 private: 40 private:
38 UBiDi* bidi_; 41 UBiDi* bidi_;
39 42
40 DISALLOW_COPY_AND_ASSIGN(BiDiLineIterator); 43 DISALLOW_COPY_AND_ASSIGN(BiDiLineIterator);
41 }; 44 };
42 45
43 #endif // APP_BIDI_LINE_ITERATOR_H_ 46 } // namespace i18n
47 } // namespace base
48
49 #endif // BASE_I18N_BIDI_LINE_ITERATOR_H_
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