Font.h revision ab9e7a118cf1ea2e3a93dce683b2ded3e7291ddb
18e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project/* 28e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Copyright (C) 2000 Lars Knoll (knoll@kde.org) 38e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * (C) 2000 Antti Koivisto (koivisto@kde.org) 48e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * (C) 2000 Dirk Mueller (mueller@kde.org) 56c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen * Copyright (C) 2003, 2006, 2007, 2010 Apple Inc. All rights reserved. 6635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project * Copyright (C) 2008 Holger Hans Peter Freyther 78e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 88e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * This library is free software; you can redistribute it and/or 98e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * modify it under the terms of the GNU Library General Public 108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * License as published by the Free Software Foundation; either 118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * version 2 of the License, or (at your option) any later version. 128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * This library is distributed in the hope that it will be useful, 148e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * but WITHOUT ANY WARRANTY; without even the implied warranty of 158e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 168e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Library General Public License for more details. 178e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 188e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * You should have received a copy of the GNU Library General Public License 198e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * along with this library; see the file COPYING.LIB. If not, write to 208e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 218e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Boston, MA 02110-1301, USA. 228e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 238e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project */ 248e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 258e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#ifndef Font_h 268e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#define Font_h 278e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 28d0825bca7fe65beaee391d30da42e937db621564Steve Block#include "CharacterNames.h" 298e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "FontDescription.h" 306c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen#include "FontFallbackList.h" 31635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project#include "SimpleFontData.h" 32d0825bca7fe65beaee391d30da42e937db621564Steve Block#include "TypesettingFeatures.h" 338e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include <wtf/HashMap.h> 34d0825bca7fe65beaee391d30da42e937db621564Steve Block#include <wtf/HashSet.h> 35635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project#include <wtf/MathExtras.h> 368e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 378e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#if PLATFORM(QT) 38635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project#include <QFont> 398e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#endif 408e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 418e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectnamespace WebCore { 428e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 438e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass FloatPoint; 448e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass FloatRect; 458e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass FontData; 468e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass FontFallbackList; 478e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass FontPlatformData; 488e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass FontSelector; 498e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass GlyphBuffer; 508e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass GlyphPageTreeNode; 518e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass GraphicsContext; 528e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass SVGFontElement; 53ab9e7a118cf1ea2e3a93dce683b2ded3e7291ddbBen Murdochclass TextRun; 548e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 558e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectstruct GlyphData; 568e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 57635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Projectconst unsigned defaultUnitsPerEm = 1000; 58635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project 59dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Blockstruct GlyphOverflow { 60dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block GlyphOverflow() 61dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block : left(0) 62dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block , right(0) 63dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block , top(0) 64dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block , bottom(0) 65dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block { 66dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block } 67dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block 68dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block int left; 69dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block int right; 70dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block int top; 71dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block int bottom; 72dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block}; 73dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block 748e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass Font { 758e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectpublic: 768e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project Font(); 778e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project Font(const FontDescription&, short letterSpacing, short wordSpacing); 78635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project // This constructor is only used if the platform wants to start with a native font. 79967717af5423377c967781471ee106e2bb4e11c8Ben Murdoch Font(const FontPlatformData&, bool isPrinting, FontSmoothingMode = AutoSmoothing); 808e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project ~Font(); 818e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 828e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project Font(const Font&); 838e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project Font& operator=(const Font&); 848e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 858e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project bool operator==(const Font& other) const; 8621939df44de1705786c545cd1bf519d47250322dBen Murdoch bool operator!=(const Font& other) const { return !(*this == other); } 878e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 888e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project const FontDescription& fontDescription() const { return m_fontDescription; } 898e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 908e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project int pixelSize() const { return fontDescription().computedPixelSize(); } 918e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project float size() const { return fontDescription().computedSize(); } 928e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 938e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project void update(PassRefPtr<FontSelector>) const; 948e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 958e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project void drawText(GraphicsContext*, const TextRun&, const FloatPoint&, int from = 0, int to = -1) const; 96f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch void drawEmphasisMarks(GraphicsContext*, const TextRun&, const AtomicString& mark, const FloatPoint&, int from = 0, int to = -1) const; 978e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 98dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block int width(const TextRun& run, HashSet<const SimpleFontData*>* fallbackFonts = 0, GlyphOverflow* glyphOverflow = 0) const { return lroundf(floatWidth(run, fallbackFonts, glyphOverflow)); } 99dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block float floatWidth(const TextRun&, HashSet<const SimpleFontData*>* fallbackFonts = 0, GlyphOverflow* glyphOverflow = 0) const; 1008e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project float floatWidth(const TextRun& run, int extraCharsAvailable, int& charsConsumed, String& glyphName) const; 1018e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 10206ea8e899e48f1f2f396b70e63fae369f2f23232Kristian Monsen int offsetForPosition(const TextRun&, float position, bool includePartialGlyphs) const; 10306ea8e899e48f1f2f396b70e63fae369f2f23232Kristian Monsen FloatRect selectionRectForText(const TextRun&, const FloatPoint&, int h, int from = 0, int to = -1) const; 1048e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1058e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project bool isSmallCaps() const { return m_fontDescription.smallCaps(); } 1068e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1078e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project short wordSpacing() const { return m_wordSpacing; } 1088e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project short letterSpacing() const { return m_letterSpacing; } 1098e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project void setWordSpacing(short s) { m_wordSpacing = s; } 1108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project void setLetterSpacing(short s) { m_letterSpacing = s; } 1118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project bool isFixedPitch() const; 1128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project bool isPrinterFont() const { return m_fontDescription.usePrinterFont(); } 1138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1148e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project FontRenderingMode renderingMode() const { return m_fontDescription.renderingMode(); } 1158e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 116d0825bca7fe65beaee391d30da42e937db621564Steve Block TypesettingFeatures typesettingFeatures() const 117d0825bca7fe65beaee391d30da42e937db621564Steve Block { 118d0825bca7fe65beaee391d30da42e937db621564Steve Block TextRenderingMode textRenderingMode = m_fontDescription.textRenderingMode(); 119d0825bca7fe65beaee391d30da42e937db621564Steve Block return textRenderingMode == OptimizeLegibility || textRenderingMode == GeometricPrecision ? Kerning | Ligatures : 0; 120d0825bca7fe65beaee391d30da42e937db621564Steve Block } 121d0825bca7fe65beaee391d30da42e937db621564Steve Block 1228e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project FontFamily& firstFamily() { return m_fontDescription.firstFamily(); } 1238e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project const FontFamily& family() const { return m_fontDescription.family(); } 1248e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1258e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project bool italic() const { return m_fontDescription.italic(); } 1268e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project FontWeight weight() const { return m_fontDescription.weight(); } 1278e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1288e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project bool isPlatformFont() const { return m_isPlatformFont; } 1298e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1308e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // Metrics that we query the FontFallbackList for. 1316b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner int ascent(FontBaseline baselineType = AlphabeticBaseline) const { return primaryFont()->ascent(baselineType); } 1326b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner int descent(FontBaseline baselineType = AlphabeticBaseline) const { return primaryFont()->descent(baselineType); } 1338e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project int height() const { return ascent() + descent(); } 134635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project int lineSpacing() const { return primaryFont()->lineSpacing(); } 135635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project int lineGap() const { return primaryFont()->lineGap(); } 136635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project float xHeight() const { return primaryFont()->xHeight(); } 137635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project unsigned unitsPerEm() const { return primaryFont()->unitsPerEm(); } 1385f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian int spaceWidth() const { return (int)ceilf(primaryFont()->adjustedSpaceWidth() + m_letterSpacing); } 139967717af5423377c967781471ee106e2bb4e11c8Ben Murdoch float tabWidth(const SimpleFontData& fontData) const { return 8 * ceilf(fontData.adjustedSpaceWidth() + letterSpacing()); } 140f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch int emphasisMarkAscent(const AtomicString&) const; 141f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch int emphasisMarkDescent(const AtomicString&) const; 142f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch int emphasisMarkHeight(const AtomicString&) const; 1438e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1440bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch const SimpleFontData* primaryFont() const; 1458e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project const FontData* fontDataAt(unsigned) const; 146f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch GlyphData glyphDataForCharacter(UChar32, bool mirror, FontDataVariant = AutoVariant) const; 147cad810f21b803229eb11403f9209855525a25d57Steve Block bool primaryFontHasGlyphForCharacter(UChar32) const; 1488e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // Used for complex text, and does not utilize the glyph map cache. 1498e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project const FontData* fontDataForCharacters(const UChar*, int length) const; 1508e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1516b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner static bool isCJKIdeograph(UChar32); 152f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch static bool isCJKIdeographOrSymbol(UChar32); 1536b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner 154635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project#if PLATFORM(QT) 155635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project QFont font() const; 156635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project#endif 157635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project 1585f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian static void setShouldUseSmoothing(bool); 1595f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian static bool shouldUseSmoothing(); 1605f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian 16121939df44de1705786c545cd1bf519d47250322dBen Murdoch enum CodePath { Auto, Simple, Complex, SimpleWithGlyphOverflow }; 16221939df44de1705786c545cd1bf519d47250322dBen Murdoch 1638e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectprivate: 1648e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#if ENABLE(SVG_FONTS) 1658e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project void drawTextUsingSVGFont(GraphicsContext*, const TextRun&, const FloatPoint&, int from, int to) const; 1668e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project float floatWidthUsingSVGFont(const TextRun&) const; 1678e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project float floatWidthUsingSVGFont(const TextRun&, int extraCharsAvailable, int& charsConsumed, String& glyphName) const; 16806ea8e899e48f1f2f396b70e63fae369f2f23232Kristian Monsen FloatRect selectionRectForTextUsingSVGFont(const TextRun&, const FloatPoint&, int h, int from, int to) const; 16906ea8e899e48f1f2f396b70e63fae369f2f23232Kristian Monsen int offsetForPositionForTextUsingSVGFont(const TextRun&, float position, bool includePartialGlyphs) const; 1708e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#endif 171635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project 172f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch enum ForTextEmphasisOrNot { NotForTextEmphasis, ForTextEmphasis }; 173f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch 174f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch // Returns the initial in-stream advance. 175f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch float getGlyphsAndAdvancesForSimpleText(const TextRun&, int from, int to, GlyphBuffer&, ForTextEmphasisOrNot = NotForTextEmphasis) const; 176635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project void drawSimpleText(GraphicsContext*, const TextRun&, const FloatPoint&, int from, int to) const; 177f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch void drawEmphasisMarksForSimpleText(GraphicsContext*, const TextRun&, const AtomicString& mark, const FloatPoint&, int from, int to) const; 1788e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project void drawGlyphs(GraphicsContext*, const SimpleFontData*, const GlyphBuffer&, int from, int to, const FloatPoint&) const; 179f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch void drawGlyphBuffer(GraphicsContext*, const GlyphBuffer&, const FloatPoint&) const; 180f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch void drawEmphasisMarks(GraphicsContext* context, const GlyphBuffer&, const AtomicString&, const FloatPoint&) const; 18121939df44de1705786c545cd1bf519d47250322dBen Murdoch float floatWidthForSimpleText(const TextRun&, GlyphBuffer*, HashSet<const SimpleFontData*>* fallbackFonts = 0, GlyphOverflow* = 0) const; 18206ea8e899e48f1f2f396b70e63fae369f2f23232Kristian Monsen int offsetForPositionForSimpleText(const TextRun&, float position, bool includePartialGlyphs) const; 18306ea8e899e48f1f2f396b70e63fae369f2f23232Kristian Monsen FloatRect selectionRectForSimpleText(const TextRun&, const FloatPoint&, int h, int from, int to) const; 1845f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian 185f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch bool getEmphasisMarkGlyphData(const AtomicString&, GlyphData&) const; 186f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch 1875f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian static bool canReturnFallbackFontsForComplexText(); 188635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project 189545e470e52f0ac6a3a072bf559c796b42c6066b6Ben Murdoch CodePath codePath(const TextRun&) const; 190f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch 191f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch // Returns the initial in-stream advance. 192f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch float getGlyphsAndAdvancesForComplexText(const TextRun&, int from, int to, GlyphBuffer&, ForTextEmphasisOrNot = NotForTextEmphasis) const; 193635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project void drawComplexText(GraphicsContext*, const TextRun&, const FloatPoint&, int from, int to) const; 194f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch void drawEmphasisMarksForComplexText(GraphicsContext*, const TextRun&, const AtomicString& mark, const FloatPoint&, int from, int to) const; 195dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block float floatWidthForComplexText(const TextRun&, HashSet<const SimpleFontData*>* fallbackFonts = 0, GlyphOverflow* = 0) const; 19606ea8e899e48f1f2f396b70e63fae369f2f23232Kristian Monsen int offsetForPositionForComplexText(const TextRun&, float position, bool includePartialGlyphs) const; 19706ea8e899e48f1f2f396b70e63fae369f2f23232Kristian Monsen FloatRect selectionRectForComplexText(const TextRun&, const FloatPoint&, int h, int from, int to) const; 198635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project 1998e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project friend struct WidthIterator; 2008e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 2018e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectpublic: 2028e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // Useful for debugging the different font rendering code paths. 2038e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static void setCodePath(CodePath); 2048e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static CodePath codePath(); 2058e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static CodePath s_codePath; 2068e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 2078e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static const uint8_t gRoundingHackCharacterTable[256]; 2088e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static bool isRoundingHackCharacter(UChar32 c) 2098e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { 2108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return (((c & ~0xFF) == 0 && gRoundingHackCharacterTable[c])); 2118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 2128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 2138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project FontSelector* fontSelector() const; 214bec39347bb3bb5bf1187ccaf471d26247f28b585Kristian Monsen static bool treatAsSpace(UChar c) { return c == ' ' || c == '\t' || c == '\n' || c == noBreakSpace; } 215bec39347bb3bb5bf1187ccaf471d26247f28b585Kristian Monsen static bool treatAsZeroWidthSpace(UChar c) { return c < 0x20 || (c >= 0x7F && c < 0xA0) || c == softHyphen || (c >= 0x200c && c <= 0x200f) || (c >= 0x202a && c <= 0x202e) || c == objectReplacementCharacter; } 216f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch static bool canReceiveTextEmphasis(UChar32 c); 2178e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 218d0825bca7fe65beaee391d30da42e937db621564Steve Block static inline UChar normalizeSpaces(UChar character) 219d0825bca7fe65beaee391d30da42e937db621564Steve Block { 220d0825bca7fe65beaee391d30da42e937db621564Steve Block if (treatAsSpace(character)) 221d0825bca7fe65beaee391d30da42e937db621564Steve Block return space; 222d0825bca7fe65beaee391d30da42e937db621564Steve Block 223d0825bca7fe65beaee391d30da42e937db621564Steve Block if (treatAsZeroWidthSpace(character)) 224d0825bca7fe65beaee391d30da42e937db621564Steve Block return zeroWidthSpace; 225d0825bca7fe65beaee391d30da42e937db621564Steve Block 226d0825bca7fe65beaee391d30da42e937db621564Steve Block return character; 227d0825bca7fe65beaee391d30da42e937db621564Steve Block } 228d0825bca7fe65beaee391d30da42e937db621564Steve Block 229d0825bca7fe65beaee391d30da42e937db621564Steve Block static String normalizeSpaces(const String&); 230d0825bca7fe65beaee391d30da42e937db621564Steve Block 2318e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#if ENABLE(SVG_FONTS) 2328e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project bool isSVGFont() const; 2338e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project SVGFontElement* svgFont() const; 2348e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#endif 2358e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 236e78cbe89e6f337f2f1fe40315be88f742b547151Steve Block bool needsTranscoding() const { return m_needsTranscoding; } 237e78cbe89e6f337f2f1fe40315be88f742b547151Steve Block 2388e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectprivate: 239cad810f21b803229eb11403f9209855525a25d57Steve Block bool loadingCustomFonts() const 240cad810f21b803229eb11403f9209855525a25d57Steve Block { 241cad810f21b803229eb11403f9209855525a25d57Steve Block return m_fontList && m_fontList->loadingCustomFonts(); 242cad810f21b803229eb11403f9209855525a25d57Steve Block } 243cad810f21b803229eb11403f9209855525a25d57Steve Block 2448e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project FontDescription m_fontDescription; 2458e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project mutable RefPtr<FontFallbackList> m_fontList; 2468e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project short m_letterSpacing; 2478e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project short m_wordSpacing; 2488e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project bool m_isPlatformFont; 249e78cbe89e6f337f2f1fe40315be88f742b547151Steve Block bool m_needsTranscoding; 2508e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project}; 2518e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 2526c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monseninline Font::~Font() 2536c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen{ 2546c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen} 2556c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen 2566c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monseninline const SimpleFontData* Font::primaryFont() const 2576c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen{ 2586c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen ASSERT(m_fontList); 2596c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen return m_fontList->primarySimpleFontData(this); 2606c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen} 2616c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen 2626c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monseninline const FontData* Font::fontDataAt(unsigned index) const 2636c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen{ 2646c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen ASSERT(m_fontList); 2656c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen return m_fontList->fontDataAt(this, index); 2666c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen} 2676c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen 2686c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monseninline const FontData* Font::fontDataForCharacters(const UChar* characters, int length) const 2696c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen{ 2706c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen ASSERT(m_fontList); 2716c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen return m_fontList->fontDataForCharacters(this, characters, length); 2726c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen} 2736c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen 2746c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monseninline bool Font::isFixedPitch() const 2756c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen{ 2766c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen ASSERT(m_fontList); 2776c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen return m_fontList->isFixedPitch(this); 2786c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen} 2796c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen 2806c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monseninline FontSelector* Font::fontSelector() const 2816c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen{ 2826c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen return m_fontList ? m_fontList->fontSelector() : 0; 2836c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen} 2846c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen 2858e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 2868e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 2878e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#endif 288