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1 /* | 1 /* |
2 * Copyright (C) 2003, 2006, 2008, 2009, 2010, 2011 Apple Inc. All rights reserv
ed. | 2 * Copyright (C) 2003, 2006, 2008, 2009, 2010, 2011 Apple Inc. All rights reserv
ed. |
3 * Copyright (C) 2008 Holger Hans Peter Freyther | 3 * Copyright (C) 2008 Holger Hans Peter Freyther |
4 * Copyright (C) 2014 Google Inc. All rights reserved. | 4 * Copyright (C) 2014 Google Inc. All rights reserved. |
5 * | 5 * |
6 * This library is free software; you can redistribute it and/or | 6 * This library is free software; you can redistribute it and/or |
7 * modify it under the terms of the GNU Library General Public | 7 * modify it under the terms of the GNU Library General Public |
8 * License as published by the Free Software Foundation; either | 8 * License as published by the Free Software Foundation; either |
9 * version 2 of the License, or (at your option) any later version. | 9 * version 2 of the License, or (at your option) any later version. |
10 * | 10 * |
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65 { | 65 { |
66 ASSERT(m_font); | 66 ASSERT(m_font); |
67 return m_font->glyphDataForCharacter(charData.character, m_run.rtl(), normal
izeSpace); | 67 return m_font->glyphDataForCharacter(charData.character, m_run.rtl(), normal
izeSpace); |
68 } | 68 } |
69 | 69 |
70 float SimpleShaper::characterWidth(UChar32 character, const GlyphData& glyphData
) const | 70 float SimpleShaper::characterWidth(UChar32 character, const GlyphData& glyphData
) const |
71 { | 71 { |
72 const SimpleFontData* fontData = glyphData.fontData; | 72 const SimpleFontData* fontData = glyphData.fontData; |
73 ASSERT(fontData); | 73 ASSERT(fontData); |
74 | 74 |
75 if (UNLIKELY(character == characterTabulation && m_run.allowTabs())) | 75 if (UNLIKELY(character == tabulationCharacter && m_run.allowTabs())) |
76 return m_font->tabWidth(*fontData, m_run.tabSize(), m_run.xPos() + m_run
WidthSoFar); | 76 return m_font->tabWidth(*fontData, m_run.tabSize(), m_run.xPos() + m_run
WidthSoFar); |
77 | 77 |
78 float width = fontData->widthForGlyph(glyphData.glyph); | 78 float width = fontData->widthForGlyph(glyphData.glyph); |
79 | 79 |
80 // SVG uses horizontalGlyphStretch(), when textLength is used to stretch/squ
eeze text. | 80 // SVG uses horizontalGlyphStretch(), when textLength is used to stretch/squ
eeze text. |
81 if (UNLIKELY(m_run.horizontalGlyphStretch() != 1)) | 81 if (UNLIKELY(m_run.horizontalGlyphStretch() != 1)) |
82 width *= m_run.horizontalGlyphStretch(); | 82 width *= m_run.horizontalGlyphStretch(); |
83 | 83 |
84 return width; | 84 return width; |
85 } | 85 } |
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105 m_expansion -= m_expansionPerOpportunity; | 105 m_expansion -= m_expansionPerOpportunity; |
106 width += m_expansionPerOpportunity; | 106 width += m_expansionPerOpportunity; |
107 m_isAfterExpansion = true; | 107 m_isAfterExpansion = true; |
108 } | 108 } |
109 } else { | 109 } else { |
110 m_isAfterExpansion = false; | 110 m_isAfterExpansion = false; |
111 } | 111 } |
112 | 112 |
113 // Account for word spacing. | 113 // Account for word spacing. |
114 // We apply additional space between "words" by adding width to the spac
e character. | 114 // We apply additional space between "words" by adding width to the spac
e character. |
115 if (isExpansionOpportunity && (charData.character != characterTabulation
|| !m_run.allowTabs()) | 115 if (isExpansionOpportunity && (charData.character != tabulationCharacter
|| !m_run.allowTabs()) |
116 && (charData.characterOffset || charData.character == noBreakSpace) | 116 && (charData.characterOffset || charData.character == noBreakSpaceCh
aracter) |
117 && m_font->fontDescription().wordSpacing()) { | 117 && m_font->fontDescription().wordSpacing()) { |
118 width += m_font->fontDescription().wordSpacing(); | 118 width += m_font->fontDescription().wordSpacing(); |
119 } | 119 } |
120 } else { | 120 } else { |
121 m_isAfterExpansion = false; | 121 m_isAfterExpansion = false; |
122 } | 122 } |
123 | 123 |
124 return width; | 124 return width; |
125 } | 125 } |
126 | 126 |
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138 while (textIterator.consume(charData.character)) { | 138 while (textIterator.consume(charData.character)) { |
139 charData.characterOffset = textIterator.offset(); | 139 charData.characterOffset = textIterator.offset(); |
140 charData.clusterLength = textIterator.glyphLength(); | 140 charData.clusterLength = textIterator.glyphLength(); |
141 GlyphData glyphData = glyphDataForCharacter(charData, normalizeSpace); | 141 GlyphData glyphData = glyphDataForCharacter(charData, normalizeSpace); |
142 | 142 |
143 // Some fonts do not have a glyph for zero-width-space, | 143 // Some fonts do not have a glyph for zero-width-space, |
144 // in that case use the space character and override the width. | 144 // in that case use the space character and override the width. |
145 float width; | 145 float width; |
146 bool spaceUsedAsZeroWidthSpace = false; | 146 bool spaceUsedAsZeroWidthSpace = false; |
147 if (!glyphData.glyph && Character::treatAsZeroWidthSpace(charData.charac
ter)) { | 147 if (!glyphData.glyph && Character::treatAsZeroWidthSpace(charData.charac
ter)) { |
148 charData.character = space; | 148 charData.character = spaceCharacter; |
149 glyphData = glyphDataForCharacter(charData); | 149 glyphData = glyphDataForCharacter(charData); |
150 width = 0; | 150 width = 0; |
151 spaceUsedAsZeroWidthSpace = true; | 151 spaceUsedAsZeroWidthSpace = true; |
152 } else { | 152 } else { |
153 width = characterWidth(charData.character, glyphData); | 153 width = characterWidth(charData.character, glyphData); |
154 } | 154 } |
155 | 155 |
156 Glyph glyph = glyphData.glyph; | 156 Glyph glyph = glyphData.glyph; |
157 const SimpleFontData* fontData = glyphData.fontData; | 157 const SimpleFontData* fontData = glyphData.fontData; |
158 ASSERT(fontData); | 158 ASSERT(fontData); |
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219 float initialWidth = m_runWidthSoFar; | 219 float initialWidth = m_runWidthSoFar; |
220 | 220 |
221 if (!advance(m_currentCharacter + 1)) | 221 if (!advance(m_currentCharacter + 1)) |
222 return false; | 222 return false; |
223 | 223 |
224 width = m_runWidthSoFar - initialWidth; | 224 width = m_runWidthSoFar - initialWidth; |
225 return true; | 225 return true; |
226 } | 226 } |
227 | 227 |
228 } // namespace blink | 228 } // namespace blink |
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