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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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 #include "SymbolsIterator.h" | 5 #include "SymbolsIterator.h" |
6 | 6 |
7 #include "wtf/PtrUtil.h" | 7 #include "wtf/PtrUtil.h" |
8 #include <unicode/uchar.h> | 8 #include <unicode/uchar.h> |
9 #include <unicode/uniset.h> | 9 #include <unicode/uniset.h> |
10 | 10 |
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102 peekChar == combiningEnclosingCircleBackslashCharacter) { | 102 peekChar == combiningEnclosingCircleBackslashCharacter) { |
103 m_currentFontFallbackPriority = FontFallbackPriority::EmojiEmoji; | 103 m_currentFontFallbackPriority = FontFallbackPriority::EmojiEmoji; |
104 } | 104 } |
105 | 105 |
106 // Regional indicators | 106 // Regional indicators |
107 if (Character::isRegionalIndicator(m_nextChar) && | 107 if (Character::isRegionalIndicator(m_nextChar) && |
108 Character::isRegionalIndicator(peekChar)) { | 108 Character::isRegionalIndicator(peekChar)) { |
109 m_currentFontFallbackPriority = FontFallbackPriority::EmojiEmoji; | 109 m_currentFontFallbackPriority = FontFallbackPriority::EmojiEmoji; |
110 } | 110 } |
111 | 111 |
112 // Upgrade text presentation emoji to emoji presentation when followed by
ZWJ, | 112 // Upgrade text presentation emoji to emoji presentation when followed by |
113 // Example U+1F441 U+200D U+1F5E8, eye + ZWJ + left speech bubble. | 113 // ZWJ, Example U+1F441 U+200D U+1F5E8, eye + ZWJ + left speech bubble. |
114 if ((m_nextChar == eyeCharacter || | 114 if ((m_nextChar == eyeCharacter || |
115 m_nextChar == wavingWhiteFlagCharacter) && | 115 m_nextChar == wavingWhiteFlagCharacter) && |
116 peekChar == zeroWidthJoinerCharacter) { | 116 peekChar == zeroWidthJoinerCharacter) { |
117 m_currentFontFallbackPriority = FontFallbackPriority::EmojiEmoji; | 117 m_currentFontFallbackPriority = FontFallbackPriority::EmojiEmoji; |
118 } | 118 } |
119 } | 119 } |
120 | 120 |
121 if (m_previousFontFallbackPriority != m_currentFontFallbackPriority && | 121 if (m_previousFontFallbackPriority != m_currentFontFallbackPriority && |
122 (m_previousFontFallbackPriority != FontFallbackPriority::Invalid)) { | 122 (m_previousFontFallbackPriority != FontFallbackPriority::Invalid)) { |
123 *symbolsLimit = iteratorOffset; | 123 *symbolsLimit = iteratorOffset; |
124 *fontFallbackPriority = m_previousFontFallbackPriority; | 124 *fontFallbackPriority = m_previousFontFallbackPriority; |
125 return true; | 125 return true; |
126 } | 126 } |
127 } | 127 } |
128 *symbolsLimit = m_bufferSize; | 128 *symbolsLimit = m_bufferSize; |
129 *fontFallbackPriority = m_currentFontFallbackPriority; | 129 *fontFallbackPriority = m_currentFontFallbackPriority; |
130 m_atEnd = true; | 130 m_atEnd = true; |
131 return true; | 131 return true; |
132 } | 132 } |
133 | 133 |
134 } // namespace blink | 134 } // namespace blink |
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