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) 52fc2651226baac27029e38c9d6ef883fa32084dbSteve Block * Copyright (C) 2003, 2006, 2007, 2010, 2011 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 288e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "FontDescription.h" 296c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen#include "FontFallbackList.h" 30635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project#include "SimpleFontData.h" 312fc2651226baac27029e38c9d6ef883fa32084dbSteve Block#include "TextDirection.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> 362fc2651226baac27029e38c9d6ef883fa32084dbSteve Block#include <wtf/unicode/CharacterNames.h> 378e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 388e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#if PLATFORM(QT) 39635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project#include <QFont> 408e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#endif 418e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 428e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectnamespace WebCore { 438e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 448e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass FloatPoint; 458e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass FloatRect; 468e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass FontData; 472fc2651226baac27029e38c9d6ef883fa32084dbSteve Blockclass FontMetrics; 488e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass FontPlatformData; 498e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass FontSelector; 508e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass GlyphBuffer; 518e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass GlyphPageTreeNode; 528e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass GraphicsContext; 538e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass SVGFontElement; 54ab9e7a118cf1ea2e3a93dce683b2ded3e7291ddbBen Murdochclass TextRun; 558e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 568e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectstruct GlyphData; 578e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 58dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Blockstruct GlyphOverflow { 59dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block GlyphOverflow() 60dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block : left(0) 61dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block , right(0) 62dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block , top(0) 63dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block , bottom(0) 642bde8e466a4451c7319e3a072d118917957d6554Steve Block , computeBounds(false) 65dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block { 66dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block } 67dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block 68dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block int left; 69dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block int right; 70dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block int top; 71dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block int bottom; 722bde8e466a4451c7319e3a072d118917957d6554Steve Block bool computeBounds; 73dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block}; 74dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block 752bde8e466a4451c7319e3a072d118917957d6554Steve Block 768e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectclass Font { 778e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectpublic: 788e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project Font(); 798e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project Font(const FontDescription&, short letterSpacing, short wordSpacing); 80635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project // This constructor is only used if the platform wants to start with a native font. 81967717af5423377c967781471ee106e2bb4e11c8Ben Murdoch Font(const FontPlatformData&, bool isPrinting, FontSmoothingMode = AutoSmoothing); 828e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project ~Font(); 838e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 848e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project Font(const Font&); 858e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project Font& operator=(const Font&); 868e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 878e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project bool operator==(const Font& other) const; 8821939df44de1705786c545cd1bf519d47250322dBen Murdoch bool operator!=(const Font& other) const { return !(*this == other); } 898e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 908e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project const FontDescription& fontDescription() const { return m_fontDescription; } 918e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 928e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project int pixelSize() const { return fontDescription().computedPixelSize(); } 938e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project float size() const { return fontDescription().computedSize(); } 948e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 958e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project void update(PassRefPtr<FontSelector>) const; 968e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 978e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project void drawText(GraphicsContext*, const TextRun&, const FloatPoint&, int from = 0, int to = -1) const; 98f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch void drawEmphasisMarks(GraphicsContext*, const TextRun&, const AtomicString& mark, const FloatPoint&, int from = 0, int to = -1) const; 998e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 10081bc750723a18f21cd17d1b173cd2a4dda9cea6eBen Murdoch float width(const TextRun&, HashSet<const SimpleFontData*>* fallbackFonts = 0, GlyphOverflow* = 0) const; 10181bc750723a18f21cd17d1b173cd2a4dda9cea6eBen Murdoch float width(const TextRun&, int extraCharsAvailable, int& charsConsumed, String& glyphName) const; 1028e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 10306ea8e899e48f1f2f396b70e63fae369f2f23232Kristian Monsen int offsetForPosition(const TextRun&, float position, bool includePartialGlyphs) const; 10406ea8e899e48f1f2f396b70e63fae369f2f23232Kristian Monsen FloatRect selectionRectForText(const TextRun&, const FloatPoint&, int h, int from = 0, int to = -1) const; 1058e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1068e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project bool isSmallCaps() const { return m_fontDescription.smallCaps(); } 1078e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1088e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project short wordSpacing() const { return m_wordSpacing; } 1098e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project short letterSpacing() const { return m_letterSpacing; } 1108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project void setWordSpacing(short s) { m_wordSpacing = s; } 1118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project void setLetterSpacing(short s) { m_letterSpacing = s; } 1128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project bool isFixedPitch() const; 1138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project bool isPrinterFont() const { return m_fontDescription.usePrinterFont(); } 1148e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1158e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project FontRenderingMode renderingMode() const { return m_fontDescription.renderingMode(); } 1168e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 117d0825bca7fe65beaee391d30da42e937db621564Steve Block TypesettingFeatures typesettingFeatures() const 118d0825bca7fe65beaee391d30da42e937db621564Steve Block { 119d0825bca7fe65beaee391d30da42e937db621564Steve Block TextRenderingMode textRenderingMode = m_fontDescription.textRenderingMode(); 120d0825bca7fe65beaee391d30da42e937db621564Steve Block return textRenderingMode == OptimizeLegibility || textRenderingMode == GeometricPrecision ? Kerning | Ligatures : 0; 121d0825bca7fe65beaee391d30da42e937db621564Steve Block } 122d0825bca7fe65beaee391d30da42e937db621564Steve Block 1238e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project FontFamily& firstFamily() { return m_fontDescription.firstFamily(); } 1248e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project const FontFamily& family() const { return m_fontDescription.family(); } 1258e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1268e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project bool italic() const { return m_fontDescription.italic(); } 1278e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project FontWeight weight() const { return m_fontDescription.weight(); } 1282fc2651226baac27029e38c9d6ef883fa32084dbSteve Block FontWidthVariant widthVariant() const { return m_fontDescription.widthVariant(); } 1298e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1308e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project bool isPlatformFont() const { return m_isPlatformFont; } 1318e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1328e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // Metrics that we query the FontFallbackList for. 1332fc2651226baac27029e38c9d6ef883fa32084dbSteve Block const FontMetrics& fontMetrics() const { return primaryFont()->fontMetrics(); } 13481bc750723a18f21cd17d1b173cd2a4dda9cea6eBen Murdoch float spaceWidth() const { return primaryFont()->spaceWidth() + m_letterSpacing; } 13581bc750723a18f21cd17d1b173cd2a4dda9cea6eBen Murdoch float tabWidth(const SimpleFontData& fontData) const { return 8 * fontData.spaceWidth() + letterSpacing(); } 136f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch int emphasisMarkAscent(const AtomicString&) const; 137f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch int emphasisMarkDescent(const AtomicString&) const; 138f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch int emphasisMarkHeight(const AtomicString&) const; 1398e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1400bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch const SimpleFontData* primaryFont() const; 1418e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project const FontData* fontDataAt(unsigned) const; 142f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch GlyphData glyphDataForCharacter(UChar32, bool mirror, FontDataVariant = AutoVariant) const; 143cad810f21b803229eb11403f9209855525a25d57Steve Block bool primaryFontHasGlyphForCharacter(UChar32) const; 1448e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1456b70adc33054f8aee8c54d0f460458a9df11b8a5Russell Brenner static bool isCJKIdeograph(UChar32); 146f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch static bool isCJKIdeographOrSymbol(UChar32); 1472fc2651226baac27029e38c9d6ef883fa32084dbSteve Block 1482fc2651226baac27029e38c9d6ef883fa32084dbSteve Block static unsigned expansionOpportunityCount(const UChar*, size_t length, TextDirection, bool& isAfterExpansion); 1492fc2651226baac27029e38c9d6ef883fa32084dbSteve Block 150635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project#if PLATFORM(QT) 151635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project QFont font() const; 152635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project#endif 153635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project 1545f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian static void setShouldUseSmoothing(bool); 1555f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian static bool shouldUseSmoothing(); 1565f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian 15721939df44de1705786c545cd1bf519d47250322dBen Murdoch enum CodePath { Auto, Simple, Complex, SimpleWithGlyphOverflow }; 15821939df44de1705786c545cd1bf519d47250322dBen Murdoch 1598e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectprivate: 1608e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#if ENABLE(SVG_FONTS) 1618e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project void drawTextUsingSVGFont(GraphicsContext*, const TextRun&, const FloatPoint&, int from, int to) const; 1628e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project float floatWidthUsingSVGFont(const TextRun&) const; 1638e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project float floatWidthUsingSVGFont(const TextRun&, int extraCharsAvailable, int& charsConsumed, String& glyphName) const; 16406ea8e899e48f1f2f396b70e63fae369f2f23232Kristian Monsen FloatRect selectionRectForTextUsingSVGFont(const TextRun&, const FloatPoint&, int h, int from, int to) const; 16506ea8e899e48f1f2f396b70e63fae369f2f23232Kristian Monsen int offsetForPositionForTextUsingSVGFont(const TextRun&, float position, bool includePartialGlyphs) const; 1668e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#endif 167635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project 168f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch enum ForTextEmphasisOrNot { NotForTextEmphasis, ForTextEmphasis }; 169f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch 170f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch // Returns the initial in-stream advance. 171f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch float getGlyphsAndAdvancesForSimpleText(const TextRun&, int from, int to, GlyphBuffer&, ForTextEmphasisOrNot = NotForTextEmphasis) const; 172635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project void drawSimpleText(GraphicsContext*, const TextRun&, const FloatPoint&, int from, int to) const; 173f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch void drawEmphasisMarksForSimpleText(GraphicsContext*, const TextRun&, const AtomicString& mark, const FloatPoint&, int from, int to) const; 17464e4b265f84573b97d408f7d3e5aa99a647be057Nicolas Roard#if PLATFORM(ANDROID) 17564e4b265f84573b97d408f7d3e5aa99a647be057Nicolas Roardpublic: 17664e4b265f84573b97d408f7d3e5aa99a647be057Nicolas Roard#endif 1778e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project void drawGlyphs(GraphicsContext*, const SimpleFontData*, const GlyphBuffer&, int from, int to, const FloatPoint&) const; 17864e4b265f84573b97d408f7d3e5aa99a647be057Nicolas Roard#if PLATFORM(ANDROID) 17964e4b265f84573b97d408f7d3e5aa99a647be057Nicolas Roardprivate: 18064e4b265f84573b97d408f7d3e5aa99a647be057Nicolas Roard#endif 181f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch void drawGlyphBuffer(GraphicsContext*, const GlyphBuffer&, const FloatPoint&) const; 182f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch void drawEmphasisMarks(GraphicsContext* context, const GlyphBuffer&, const AtomicString&, const FloatPoint&) const; 18321939df44de1705786c545cd1bf519d47250322dBen Murdoch float floatWidthForSimpleText(const TextRun&, GlyphBuffer*, HashSet<const SimpleFontData*>* fallbackFonts = 0, GlyphOverflow* = 0) const; 18406ea8e899e48f1f2f396b70e63fae369f2f23232Kristian Monsen int offsetForPositionForSimpleText(const TextRun&, float position, bool includePartialGlyphs) const; 18506ea8e899e48f1f2f396b70e63fae369f2f23232Kristian Monsen FloatRect selectionRectForSimpleText(const TextRun&, const FloatPoint&, int h, int from, int to) const; 1865f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian 187f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch bool getEmphasisMarkGlyphData(const AtomicString&, GlyphData&) const; 188f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch 1895f1ab04193ad0130ca8204aadaceae083aca9881Feng Qian static bool canReturnFallbackFontsForComplexText(); 1902fc2651226baac27029e38c9d6ef883fa32084dbSteve Block static bool canExpandAroundIdeographsInComplexText(); 191635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project 192545e470e52f0ac6a3a072bf559c796b42c6066b6Ben Murdoch CodePath codePath(const TextRun&) const; 193f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch 194f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch // Returns the initial in-stream advance. 195f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch float getGlyphsAndAdvancesForComplexText(const TextRun&, int from, int to, GlyphBuffer&, ForTextEmphasisOrNot = NotForTextEmphasis) const; 196635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project void drawComplexText(GraphicsContext*, const TextRun&, const FloatPoint&, int from, int to) const; 197f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch void drawEmphasisMarksForComplexText(GraphicsContext*, const TextRun&, const AtomicString& mark, const FloatPoint&, int from, int to) const; 198dcc8cf2e65d1aa555cce12431a16547e66b469eeSteve Block float floatWidthForComplexText(const TextRun&, HashSet<const SimpleFontData*>* fallbackFonts = 0, GlyphOverflow* = 0) const; 19906ea8e899e48f1f2f396b70e63fae369f2f23232Kristian Monsen int offsetForPositionForComplexText(const TextRun&, float position, bool includePartialGlyphs) const; 20006ea8e899e48f1f2f396b70e63fae369f2f23232Kristian Monsen FloatRect selectionRectForComplexText(const TextRun&, const FloatPoint&, int h, int from, int to) const; 201635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project 2028e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project friend struct WidthIterator; 2038e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 2048e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectpublic: 2058e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // Useful for debugging the different font rendering code paths. 2068e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static void setCodePath(CodePath); 2078e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static CodePath codePath(); 2088e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static CodePath s_codePath; 2098e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 2108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project FontSelector* fontSelector() const; 211bec39347bb3bb5bf1187ccaf471d26247f28b585Kristian Monsen static bool treatAsSpace(UChar c) { return c == ' ' || c == '\t' || c == '\n' || c == noBreakSpace; } 2122daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch static bool treatAsZeroWidthSpace(UChar c) { return treatAsZeroWidthSpaceInComplexScript(c) || c == 0x200c || c == 0x200d; } 2132daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch static bool treatAsZeroWidthSpaceInComplexScript(UChar c) { return c < 0x20 || (c >= 0x7F && c < 0xA0) || c == softHyphen || (c >= 0x200e && c <= 0x200f) || (c >= 0x202a && c <= 0x202e) || c == zeroWidthNoBreakSpace || c == objectReplacementCharacter; } 214f05b935882198ccf7d81675736e3aeb089c5113aBen Murdoch static bool canReceiveTextEmphasis(UChar32 c); 2158e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 216d0825bca7fe65beaee391d30da42e937db621564Steve Block static inline UChar normalizeSpaces(UChar character) 217d0825bca7fe65beaee391d30da42e937db621564Steve Block { 218d0825bca7fe65beaee391d30da42e937db621564Steve Block if (treatAsSpace(character)) 219d0825bca7fe65beaee391d30da42e937db621564Steve Block return space; 220d0825bca7fe65beaee391d30da42e937db621564Steve Block 221d0825bca7fe65beaee391d30da42e937db621564Steve Block if (treatAsZeroWidthSpace(character)) 222d0825bca7fe65beaee391d30da42e937db621564Steve Block return zeroWidthSpace; 223d0825bca7fe65beaee391d30da42e937db621564Steve Block 224d0825bca7fe65beaee391d30da42e937db621564Steve Block return character; 225d0825bca7fe65beaee391d30da42e937db621564Steve Block } 226d0825bca7fe65beaee391d30da42e937db621564Steve Block 2272fc2651226baac27029e38c9d6ef883fa32084dbSteve Block static String normalizeSpaces(const UChar*, unsigned length); 228d0825bca7fe65beaee391d30da42e937db621564Steve Block 2298e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#if ENABLE(SVG_FONTS) 2308e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project bool isSVGFont() const; 2318e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project SVGFontElement* svgFont() const; 2328e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#endif 2338e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 234e78cbe89e6f337f2f1fe40315be88f742b547151Steve Block bool needsTranscoding() const { return m_needsTranscoding; } 235e78cbe89e6f337f2f1fe40315be88f742b547151Steve Block 2368e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectprivate: 237cad810f21b803229eb11403f9209855525a25d57Steve Block bool loadingCustomFonts() const 238cad810f21b803229eb11403f9209855525a25d57Steve Block { 239cad810f21b803229eb11403f9209855525a25d57Steve Block return m_fontList && m_fontList->loadingCustomFonts(); 240cad810f21b803229eb11403f9209855525a25d57Steve Block } 241cad810f21b803229eb11403f9209855525a25d57Steve Block 2428e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project FontDescription m_fontDescription; 2438e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project mutable RefPtr<FontFallbackList> m_fontList; 2448e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project short m_letterSpacing; 2458e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project short m_wordSpacing; 2468e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project bool m_isPlatformFont; 247e78cbe89e6f337f2f1fe40315be88f742b547151Steve Block bool m_needsTranscoding; 2488e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project}; 2498e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 2506c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monseninline Font::~Font() 2516c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen{ 2526c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen} 2536c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen 2546c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monseninline const SimpleFontData* Font::primaryFont() const 2556c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen{ 2566c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen ASSERT(m_fontList); 2576c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen return m_fontList->primarySimpleFontData(this); 2586c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen} 2596c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen 2606c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monseninline const FontData* Font::fontDataAt(unsigned index) const 2616c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen{ 2626c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen ASSERT(m_fontList); 2636c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen return m_fontList->fontDataAt(this, index); 2646c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen} 2656c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen 2666c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monseninline bool Font::isFixedPitch() const 2676c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen{ 2686c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen ASSERT(m_fontList); 2696c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen return m_fontList->isFixedPitch(this); 2706c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen} 2716c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen 2726c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monseninline FontSelector* Font::fontSelector() const 2736c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen{ 2746c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen return m_fontList ? m_fontList->fontSelector() : 0; 2756c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen} 2766c2af9490927c3c5959b5cb07461b646f8b32f6cKristian Monsen 2778e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 2788e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 2798e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#endif 280