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| 1 /* | 1 /* |
| 2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org) | 2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org) |
| 3 * (C) 2000 Antti Koivisto (koivisto@kde.org) | 3 * (C) 2000 Antti Koivisto (koivisto@kde.org) |
| 4 * (C) 2000 Dirk Mueller (mueller@kde.org) | 4 * (C) 2000 Dirk Mueller (mueller@kde.org) |
| 5 * Copyright (C) 2003, 2006, 2007, 2010, 2011 Apple Inc. All rights reserved. | 5 * Copyright (C) 2003, 2006, 2007, 2010, 2011 Apple Inc. All rights reserved. |
| 6 * Copyright (C) 2008 Holger Hans Peter Freyther | 6 * Copyright (C) 2008 Holger Hans Peter Freyther |
| 7 * | 7 * |
| 8 * This library is free software; you can redistribute it and/or | 8 * This library is free software; you can redistribute it and/or |
| 9 * modify it under the terms of the GNU Library General Public | 9 * modify it under the terms of the GNU Library General Public |
| 10 * License as published by the Free Software Foundation; either | 10 * License as published by the Free Software Foundation; either |
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| 94 CustomFontNotReadyAction, | 94 CustomFontNotReadyAction, |
| 95 float deviceScaleFactor, | 95 float deviceScaleFactor, |
| 96 const SkPaint&) const; | 96 const SkPaint&) const; |
| 97 void drawEmphasisMarks(SkCanvas*, | 97 void drawEmphasisMarks(SkCanvas*, |
| 98 const TextRunPaintInfo&, | 98 const TextRunPaintInfo&, |
| 99 const AtomicString& mark, | 99 const AtomicString& mark, |
| 100 const FloatPoint&, | 100 const FloatPoint&, |
| 101 float deviceScaleFactor, | 101 float deviceScaleFactor, |
| 102 const SkPaint&) const; | 102 const SkPaint&) const; |
| 103 | 103 |
| 104 // Glyph bounds will be the minimum rect containing all glyph strokes, in coor
dinates using | 104 // Glyph bounds will be the minimum rect containing all glyph strokes, in |
| 105 // (<text run x position>, <baseline position>) as the origin. | 105 // coordinates using (<text run x position>, <baseline position>) as the |
| 106 // origin. |
| 106 float width(const TextRun&, | 107 float width(const TextRun&, |
| 107 HashSet<const SimpleFontData*>* fallbackFonts = nullptr, | 108 HashSet<const SimpleFontData*>* fallbackFonts = nullptr, |
| 108 FloatRect* glyphBounds = nullptr) const; | 109 FloatRect* glyphBounds = nullptr) const; |
| 109 | 110 |
| 110 int offsetForPosition(const TextRun&, | 111 int offsetForPosition(const TextRun&, |
| 111 float position, | 112 float position, |
| 112 bool includePartialGlyphs) const; | 113 bool includePartialGlyphs) const; |
| 113 FloatRect selectionRectForText(const TextRun&, | 114 FloatRect selectionRectForText(const TextRun&, |
| 114 const FloatPoint&, | 115 const FloatPoint&, |
| 115 int h, | 116 int h, |
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| 215 private: | 216 private: |
| 216 bool shouldSkipDrawing() const { | 217 bool shouldSkipDrawing() const { |
| 217 return m_fontFallbackList && m_fontFallbackList->shouldSkipDrawing(); | 218 return m_fontFallbackList && m_fontFallbackList->shouldSkipDrawing(); |
| 218 } | 219 } |
| 219 | 220 |
| 220 FontDescription m_fontDescription; | 221 FontDescription m_fontDescription; |
| 221 mutable RefPtr<FontFallbackList> m_fontFallbackList; | 222 mutable RefPtr<FontFallbackList> m_fontFallbackList; |
| 222 mutable unsigned m_canShapeWordByWord : 1; | 223 mutable unsigned m_canShapeWordByWord : 1; |
| 223 mutable unsigned m_shapeWordByWordComputed : 1; | 224 mutable unsigned m_shapeWordByWordComputed : 1; |
| 224 | 225 |
| 225 // For accessing buildGlyphBuffer and retrieving fonts used in rendering a nod
e. | 226 // For accessing buildGlyphBuffer and retrieving fonts used in rendering a |
| 227 // node. |
| 226 friend class InspectorCSSAgent; | 228 friend class InspectorCSSAgent; |
| 227 }; | 229 }; |
| 228 | 230 |
| 229 inline Font::~Font() {} | 231 inline Font::~Font() {} |
| 230 | 232 |
| 231 inline const SimpleFontData* Font::primaryFont() const { | 233 inline const SimpleFontData* Font::primaryFont() const { |
| 232 ASSERT(m_fontFallbackList); | 234 ASSERT(m_fontFallbackList); |
| 233 return m_fontFallbackList->primarySimpleFontData(m_fontDescription); | 235 return m_fontFallbackList->primarySimpleFontData(m_fontDescription); |
| 234 } | 236 } |
| 235 | 237 |
| 236 inline const FontData* Font::fontDataAt(unsigned index) const { | 238 inline const FontData* Font::fontDataAt(unsigned index) const { |
| 237 ASSERT(m_fontFallbackList); | 239 ASSERT(m_fontFallbackList); |
| 238 return m_fontFallbackList->fontDataAt(m_fontDescription, index); | 240 return m_fontFallbackList->fontDataAt(m_fontDescription, index); |
| 239 } | 241 } |
| 240 | 242 |
| 241 inline FontSelector* Font::getFontSelector() const { | 243 inline FontSelector* Font::getFontSelector() const { |
| 242 return m_fontFallbackList ? m_fontFallbackList->getFontSelector() : 0; | 244 return m_fontFallbackList ? m_fontFallbackList->getFontSelector() : 0; |
| 243 } | 245 } |
| 244 | 246 |
| 245 inline float Font::tabWidth(const SimpleFontData& fontData, | 247 inline float Font::tabWidth(const SimpleFontData& fontData, |
| 246 const TabSize& tabSize, | 248 const TabSize& tabSize, |
| 247 float position) const { | 249 float position) const { |
| 248 float baseTabWidth = tabSize.getPixelSize(fontData.spaceWidth()); | 250 float baseTabWidth = tabSize.getPixelSize(fontData.spaceWidth()); |
| 249 if (!baseTabWidth) | 251 if (!baseTabWidth) |
| 250 return getFontDescription().letterSpacing(); | 252 return getFontDescription().letterSpacing(); |
| 251 float distanceToTabStop = baseTabWidth - fmodf(position, baseTabWidth); | 253 float distanceToTabStop = baseTabWidth - fmodf(position, baseTabWidth); |
| 252 | 254 |
| 253 // Let the minimum width be the half of the space width so that it's always re
cognizable. | 255 // Let the minimum width be the half of the space width so that it's always |
| 254 // if the distance to the next tab stop is less than that, advance an addition
al tab stop. | 256 // recognizable. if the distance to the next tab stop is less than that, |
| 257 // advance an additional tab stop. |
| 255 if (distanceToTabStop < fontData.spaceWidth() / 2) | 258 if (distanceToTabStop < fontData.spaceWidth() / 2) |
| 256 distanceToTabStop += baseTabWidth; | 259 distanceToTabStop += baseTabWidth; |
| 257 | 260 |
| 258 return distanceToTabStop; | 261 return distanceToTabStop; |
| 259 } | 262 } |
| 260 | 263 |
| 261 } // namespace blink | 264 } // namespace blink |
| 262 | 265 |
| 263 #endif | 266 #endif |
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