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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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23 */ | 23 */ |
24 | 24 |
25 #ifndef Font_h | 25 #ifndef Font_h |
26 #define Font_h | 26 #define Font_h |
27 | 27 |
28 #include "platform/PlatformExport.h" | 28 #include "platform/PlatformExport.h" |
29 #include "platform/fonts/FontDescription.h" | 29 #include "platform/fonts/FontDescription.h" |
30 #include "platform/fonts/FontFallbackList.h" | 30 #include "platform/fonts/FontFallbackList.h" |
31 #include "platform/fonts/SimpleFontData.h" | 31 #include "platform/fonts/SimpleFontData.h" |
32 #include "platform/fonts/TextBlob.h" | 32 #include "platform/fonts/TextBlob.h" |
| 33 #include "platform/text/TabSize.h" |
33 #include "platform/text/TextDirection.h" | 34 #include "platform/text/TextDirection.h" |
34 #include "platform/text/TextPath.h" | 35 #include "platform/text/TextPath.h" |
35 #include "wtf/HashMap.h" | 36 #include "wtf/HashMap.h" |
36 #include "wtf/HashSet.h" | 37 #include "wtf/HashSet.h" |
37 #include "wtf/MathExtras.h" | 38 #include "wtf/MathExtras.h" |
38 #include "wtf/text/CharacterNames.h" | 39 #include "wtf/text/CharacterNames.h" |
39 | 40 |
40 // "X11/X.h" defines Complex to 0 and conflicts | 41 // "X11/X.h" defines Complex to 0 and conflicts |
41 // with Complex value in CodePath enum. | 42 // with Complex value in CodePath enum. |
42 #ifdef Complex | 43 #ifdef Complex |
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98 int emphasisMarkAscent(const AtomicString&) const; | 99 int emphasisMarkAscent(const AtomicString&) const; |
99 int emphasisMarkDescent(const AtomicString&) const; | 100 int emphasisMarkDescent(const AtomicString&) const; |
100 int emphasisMarkHeight(const AtomicString&) const; | 101 int emphasisMarkHeight(const AtomicString&) const; |
101 | 102 |
102 const SimpleFontData* primaryFont() const; | 103 const SimpleFontData* primaryFont() const; |
103 const FontData* fontDataAt(unsigned) const; | 104 const FontData* fontDataAt(unsigned) const; |
104 | 105 |
105 GlyphData glyphDataForCharacter(UChar32&, bool mirror, bool normalizeSpace =
false, FontDataVariant = AutoVariant) const; | 106 GlyphData glyphDataForCharacter(UChar32&, bool mirror, bool normalizeSpace =
false, FontDataVariant = AutoVariant) const; |
106 CodePath codePath(const TextRunPaintInfo&) const; | 107 CodePath codePath(const TextRunPaintInfo&) const; |
107 | 108 |
| 109 // Whether the font supports shaping word by word instead of shaping the |
| 110 // full run in one go. Allows better caching for fonts where space cannot |
| 111 // participate in kerning and/or ligatures. |
| 112 bool canShapeWordByWord() const; |
| 113 |
| 114 void setCanShapeWordByWordForTesting(bool b) |
| 115 { |
| 116 m_canShapeWordByWord = b; |
| 117 m_shapeWordByWordComputed = true; |
| 118 } |
| 119 |
108 private: | 120 private: |
109 enum ForTextEmphasisOrNot { NotForTextEmphasis, ForTextEmphasis }; | 121 enum ForTextEmphasisOrNot { NotForTextEmphasis, ForTextEmphasis }; |
110 | 122 |
111 // Returns the total advance. | 123 // Returns the total advance. |
112 float buildGlyphBuffer(const TextRunPaintInfo&, GlyphBuffer&, const GlyphDat
a* emphasisData = nullptr) const; | 124 float buildGlyphBuffer(const TextRunPaintInfo&, GlyphBuffer&, const GlyphDat
a* emphasisData = nullptr) const; |
113 PassTextBlobPtr buildTextBlob(const GlyphBuffer&) const; | 125 PassTextBlobPtr buildTextBlob(const GlyphBuffer&) const; |
114 void paintGlyphs(SkCanvas*, const SkPaint&, const SimpleFontData*, const Gly
ph glyphs[], unsigned numGlyphs, | 126 void paintGlyphs(SkCanvas*, const SkPaint&, const SimpleFontData*, const Gly
ph glyphs[], unsigned numGlyphs, |
115 const SkPoint pos[], const FloatRect& textRect, float deviceScaleFactor)
const; | 127 const SkPoint pos[], const FloatRect& textRect, float deviceScaleFactor)
const; |
116 void paintGlyphsHorizontal(SkCanvas*, const SkPaint&, const SimpleFontData*,
const Glyph glyphs[], unsigned numGlyphs, | 128 void paintGlyphsHorizontal(SkCanvas*, const SkPaint&, const SimpleFontData*,
const Glyph glyphs[], unsigned numGlyphs, |
117 const SkScalar xpos[], SkScalar constY, const FloatRect& textRect, float
deviceScaleFactor) const; | 129 const SkScalar xpos[], SkScalar constY, const FloatRect& textRect, float
deviceScaleFactor) const; |
118 void drawGlyphs(SkCanvas*, const SkPaint&, const SimpleFontData*, const Glyp
hBuffer&, unsigned from, unsigned numGlyphs, | 130 void drawGlyphs(SkCanvas*, const SkPaint&, const SimpleFontData*, const Glyp
hBuffer&, unsigned from, unsigned numGlyphs, |
119 const FloatPoint&, const FloatRect& textRect, float deviceScaleFactor) c
onst; | 131 const FloatPoint&, const FloatRect& textRect, float deviceScaleFactor) c
onst; |
120 void drawTextBlob(SkCanvas*, const SkPaint&, const SkTextBlob*, const SkPoin
t& origin) const; | 132 void drawTextBlob(SkCanvas*, const SkPaint&, const SkTextBlob*, const SkPoin
t& origin) const; |
121 void drawGlyphBuffer(SkCanvas*, const SkPaint&, const TextRunPaintInfo&, con
st GlyphBuffer&, const FloatPoint&, float deviceScaleFactor) const; | 133 void drawGlyphBuffer(SkCanvas*, const SkPaint&, const TextRunPaintInfo&, con
st GlyphBuffer&, const FloatPoint&, float deviceScaleFactor) const; |
122 float floatWidthForSimpleText(const TextRun&, HashSet<const SimpleFontData*>
* fallbackFonts = 0, FloatRect* glyphBounds = 0) const; | 134 float floatWidthForSimpleText(const TextRun&, HashSet<const SimpleFontData*>
* fallbackFonts = 0, FloatRect* glyphBounds = 0) const; |
123 int offsetForPositionForSimpleText(const TextRun&, float position, bool incl
udePartialGlyphs) const; | 135 int offsetForPositionForSimpleText(const TextRun&, float position, bool incl
udePartialGlyphs) const; |
124 FloatRect selectionRectForSimpleText(const TextRun&, const FloatPoint&, int
h, int from, int to, bool accountForGlyphBounds) const; | 136 FloatRect selectionRectForSimpleText(const TextRun&, const FloatPoint&, int
h, int from, int to, bool accountForGlyphBounds) const; |
125 | 137 |
126 bool getEmphasisMarkGlyphData(const AtomicString&, GlyphData&) const; | 138 bool getEmphasisMarkGlyphData(const AtomicString&, GlyphData&) const; |
127 | 139 |
128 float floatWidthForComplexText(const TextRun&, HashSet<const SimpleFontData*
>* fallbackFonts, FloatRect* glyphBounds) const; | 140 float floatWidthForComplexText(const TextRun&, HashSet<const SimpleFontData*
>* fallbackFonts, FloatRect* glyphBounds) const; |
129 int offsetForPositionForComplexText(const TextRun&, float position, bool inc
ludePartialGlyphs) const; | 141 int offsetForPositionForComplexText(const TextRun&, float position, bool inc
ludePartialGlyphs) const; |
130 FloatRect selectionRectForComplexText(const TextRun&, const FloatPoint&, int
h, int from, int to) const; | 142 FloatRect selectionRectForComplexText(const TextRun&, const FloatPoint&, int
h, int from, int to) const; |
131 | 143 |
| 144 bool computeCanShapeWordByWord() const; |
| 145 |
132 friend struct SimpleShaper; | 146 friend struct SimpleShaper; |
133 | 147 |
134 public: | 148 public: |
135 FontSelector* fontSelector() const; | 149 FontSelector* fontSelector() const; |
136 | 150 |
137 void willUseFontData(UChar32) const; | 151 void willUseFontData(UChar32) const; |
138 | 152 |
139 bool loadingCustomFonts() const; | 153 bool loadingCustomFonts() const; |
140 bool isFallbackValid() const; | 154 bool isFallbackValid() const; |
141 | 155 |
142 private: | 156 private: |
143 bool shouldSkipDrawing() const | 157 bool shouldSkipDrawing() const |
144 { | 158 { |
145 return m_fontFallbackList && m_fontFallbackList->shouldSkipDrawing(); | 159 return m_fontFallbackList && m_fontFallbackList->shouldSkipDrawing(); |
146 } | 160 } |
147 | 161 |
148 FontDescription m_fontDescription; | 162 FontDescription m_fontDescription; |
149 mutable RefPtr<FontFallbackList> m_fontFallbackList; | 163 mutable RefPtr<FontFallbackList> m_fontFallbackList; |
| 164 mutable unsigned m_canShapeWordByWord : 1; |
| 165 mutable unsigned m_shapeWordByWordComputed : 1; |
150 }; | 166 }; |
151 | 167 |
152 inline Font::~Font() | 168 inline Font::~Font() |
153 { | 169 { |
154 } | 170 } |
155 | 171 |
156 inline const SimpleFontData* Font::primaryFont() const | 172 inline const SimpleFontData* Font::primaryFont() const |
157 { | 173 { |
158 ASSERT(m_fontFallbackList); | 174 ASSERT(m_fontFallbackList); |
159 return m_fontFallbackList->primarySimpleFontData(m_fontDescription); | 175 return m_fontFallbackList->primarySimpleFontData(m_fontDescription); |
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181 // to the next tab stop is less than that, advance an additional tab stop. | 197 // to the next tab stop is less than that, advance an additional tab stop. |
182 if (distanceToTabStop < fontDescription().letterSpacing()) | 198 if (distanceToTabStop < fontDescription().letterSpacing()) |
183 distanceToTabStop += baseTabWidth; | 199 distanceToTabStop += baseTabWidth; |
184 | 200 |
185 return distanceToTabStop; | 201 return distanceToTabStop; |
186 } | 202 } |
187 | 203 |
188 } // namespace blink | 204 } // namespace blink |
189 | 205 |
190 #endif | 206 #endif |
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