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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 |
| (...skipping 15 matching lines...) Expand all Loading... |
| 26 #define Font_h | 26 #define Font_h |
| 27 | 27 |
| 28 #include "platform/LayoutUnit.h" | 28 #include "platform/LayoutUnit.h" |
| 29 #include "platform/PlatformExport.h" | 29 #include "platform/PlatformExport.h" |
| 30 #include "platform/fonts/FontDescription.h" | 30 #include "platform/fonts/FontDescription.h" |
| 31 #include "platform/fonts/FontFallbackList.h" | 31 #include "platform/fonts/FontFallbackList.h" |
| 32 #include "platform/fonts/FontFallbackPriority.h" | 32 #include "platform/fonts/FontFallbackPriority.h" |
| 33 #include "platform/fonts/SimpleFontData.h" | 33 #include "platform/fonts/SimpleFontData.h" |
| 34 #include "platform/text/TabSize.h" | 34 #include "platform/text/TabSize.h" |
| 35 #include "platform/text/TextDirection.h" | 35 #include "platform/text/TextDirection.h" |
| 36 #include "platform/text/TextPath.h" | |
| 37 #include "wtf/Allocator.h" | 36 #include "wtf/Allocator.h" |
| 38 #include "wtf/HashMap.h" | 37 #include "wtf/HashMap.h" |
| 39 #include "wtf/HashSet.h" | 38 #include "wtf/HashSet.h" |
| 40 #include "wtf/MathExtras.h" | 39 #include "wtf/MathExtras.h" |
| 41 #include "wtf/text/CharacterNames.h" | 40 #include "wtf/text/CharacterNames.h" |
| 42 | 41 |
| 43 class SkCanvas; | 42 class SkCanvas; |
| 44 class SkPaint; | 43 class SkPaint; |
| 45 struct SkPoint; | 44 struct SkPoint; |
| 46 | 45 |
| 47 namespace blink { | 46 namespace blink { |
| 48 | 47 |
| 49 struct CharacterRange; | 48 struct CharacterRange; |
| 50 class FloatPoint; | 49 class FloatPoint; |
| 51 class FloatRect; | 50 class FloatRect; |
| 52 class FontFallbackIterator; | 51 class FontFallbackIterator; |
| 53 class FontData; | 52 class FontData; |
| 54 class FontMetrics; | 53 class FontMetrics; |
| 55 class FontSelector; | 54 class FontSelector; |
| 56 class GlyphBuffer; | 55 class GlyphBuffer; |
| 57 class TextRun; | 56 class TextRun; |
| 58 struct TextRunPaintInfo; | 57 struct TextRunPaintInfo; |
| 59 | 58 |
| 60 struct GlyphData; | |
| 61 | |
| 62 class PLATFORM_EXPORT Font { | 59 class PLATFORM_EXPORT Font { |
| 63 DISALLOW_NEW(); | 60 DISALLOW_NEW(); |
| 64 | 61 |
| 65 public: | 62 public: |
| 66 Font(); | 63 Font(); |
| 67 Font(const FontDescription&); | 64 Font(const FontDescription&); |
| 68 ~Font(); | 65 ~Font(); |
| 69 | 66 |
| 70 Font(const Font&); | 67 Font(const Font&); |
| 71 Font& operator=(const Font&); | 68 Font& operator=(const Font&); |
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| 153 int emphasisMarkAscent(const AtomicString&) const; | 150 int emphasisMarkAscent(const AtomicString&) const; |
| 154 int emphasisMarkDescent(const AtomicString&) const; | 151 int emphasisMarkDescent(const AtomicString&) const; |
| 155 int emphasisMarkHeight(const AtomicString&) const; | 152 int emphasisMarkHeight(const AtomicString&) const; |
| 156 | 153 |
| 157 // This may fail and return a nullptr in case the last resort font cannot be | 154 // This may fail and return a nullptr in case the last resort font cannot be |
| 158 // loaded. This *should* not happen but in reality it does ever now and then | 155 // loaded. This *should* not happen but in reality it does ever now and then |
| 159 // when, for whatever reason, the last resort font cannot be loaded. | 156 // when, for whatever reason, the last resort font cannot be loaded. |
| 160 const SimpleFontData* primaryFont() const; | 157 const SimpleFontData* primaryFont() const; |
| 161 const FontData* fontDataAt(unsigned) const; | 158 const FontData* fontDataAt(unsigned) const; |
| 162 | 159 |
| 163 GlyphData glyphDataForCharacter(UChar32&, | |
| 164 bool mirror, | |
| 165 bool normalizeSpace = false, | |
| 166 FontDataVariant = AutoVariant) const; | |
| 167 CodePath codePath(const TextRunPaintInfo&) const; | |
| 168 | |
| 169 // Whether the font supports shaping word by word instead of shaping the | 160 // Whether the font supports shaping word by word instead of shaping the |
| 170 // full run in one go. Allows better caching for fonts where space cannot | 161 // full run in one go. Allows better caching for fonts where space cannot |
| 171 // participate in kerning and/or ligatures. | 162 // participate in kerning and/or ligatures. |
| 172 bool canShapeWordByWord() const; | 163 bool canShapeWordByWord() const; |
| 173 | 164 |
| 174 void setCanShapeWordByWordForTesting(bool b) { | 165 void setCanShapeWordByWordForTesting(bool b) { |
| 175 m_canShapeWordByWord = b; | 166 m_canShapeWordByWord = b; |
| 176 m_shapeWordByWordComputed = true; | 167 m_shapeWordByWordComputed = true; |
| 177 } | 168 } |
| 178 | 169 |
| 179 private: | 170 private: |
| 180 enum ForTextEmphasisOrNot { NotForTextEmphasis, ForTextEmphasis }; | 171 enum ForTextEmphasisOrNot { NotForTextEmphasis, ForTextEmphasis }; |
| 181 | 172 |
| 182 // Returns the total advance. | 173 // Returns the total advance. |
| 183 float buildGlyphBuffer(const TextRunPaintInfo&, | 174 float buildGlyphBuffer(const TextRunPaintInfo&, |
| 184 GlyphBuffer&, | 175 GlyphBuffer&, |
| 185 const GlyphData* emphasisData = nullptr) const; | 176 const GlyphData* emphasisData = nullptr) const; |
| 186 void drawGlyphBuffer(SkCanvas*, | 177 void drawGlyphBuffer(SkCanvas*, |
| 187 const SkPaint&, | 178 const SkPaint&, |
| 188 const TextRunPaintInfo&, | 179 const TextRunPaintInfo&, |
| 189 const GlyphBuffer&, | 180 const GlyphBuffer&, |
| 190 const FloatPoint&, | 181 const FloatPoint&, |
| 191 float deviceScaleFactor) const; | 182 float deviceScaleFactor) const; |
| 192 float floatWidthForSimpleText( | |
| 193 const TextRun&, | |
| 194 HashSet<const SimpleFontData*>* fallbackFonts = 0, | |
| 195 FloatRect* glyphBounds = 0) const; | |
| 196 int offsetForPositionForSimpleText(const TextRun&, | |
| 197 float position, | |
| 198 bool includePartialGlyphs) const; | |
| 199 FloatRect selectionRectForSimpleText(const TextRun&, | |
| 200 const FloatPoint&, | |
| 201 int h, | |
| 202 int from, | |
| 203 int to, | |
| 204 bool accountForGlyphBounds) const; | |
| 205 | 183 |
| 206 bool getEmphasisMarkGlyphData(const AtomicString&, GlyphData&) const; | 184 bool getEmphasisMarkGlyphData(const AtomicString&, GlyphData&) const; |
| 207 | 185 |
| 208 float floatWidthForComplexText(const TextRun&, | 186 float floatWidthForComplexText(const TextRun&, |
| 209 HashSet<const SimpleFontData*>* fallbackFonts, | 187 HashSet<const SimpleFontData*>* fallbackFonts, |
| 210 FloatRect* glyphBounds) const; | 188 FloatRect* glyphBounds) const; |
| 211 int offsetForPositionForComplexText(const TextRun&, | 189 int offsetForPositionForComplexText(const TextRun&, |
| 212 float position, | 190 float position, |
| 213 bool includePartialGlyphs) const; | 191 bool includePartialGlyphs) const; |
| 214 FloatRect selectionRectForComplexText(const TextRun&, | 192 FloatRect selectionRectForComplexText(const TextRun&, |
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| 277 // advance an additional tab stop. | 255 // advance an additional tab stop. |
| 278 if (distanceToTabStop < fontData->spaceWidth() / 2) | 256 if (distanceToTabStop < fontData->spaceWidth() / 2) |
| 279 distanceToTabStop += baseTabWidth; | 257 distanceToTabStop += baseTabWidth; |
| 280 | 258 |
| 281 return distanceToTabStop; | 259 return distanceToTabStop; |
| 282 } | 260 } |
| 283 | 261 |
| 284 } // namespace blink | 262 } // namespace blink |
| 285 | 263 |
| 286 #endif | 264 #endif |
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