1eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch/* 22a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * Copyright (C) 2008 Apple Inc. All rights reserved. 32a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * 42a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * Redistribution and use in source and binary forms, with or without 5eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch * modification, are permitted provided that the following conditions 6eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch * are met: 72a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * 1. Redistributions of source code must retain the above copyright 82a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * notice, this list of conditions and the following disclaimer. 92a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * 2. Redistributions in binary form must reproduce the above copyright 102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * notice, this list of conditions and the following disclaimer in the 112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * documentation and/or other materials provided with the distribution. 122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * 132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) */ 252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "config.h" 272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "core/css/CSSSegmentedFontFace.h" 282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "core/css/CSSFontFace.h" 302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "core/css/CSSFontSelector.h" 312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "platform/RuntimeEnabledFeatures.h" 322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "platform/fonts/FontCache.h" 332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "platform/fonts/FontDescription.h" 342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "platform/fonts/FontFaceCreationParams.h" 352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "platform/fonts/SegmentedFontData.h" 362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "platform/fonts/SimpleFontData.h" 372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 38eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdochnamespace blink { 392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)CSSSegmentedFontFace::CSSSegmentedFontFace(CSSFontSelector* fontSelector, FontTraits traits) 41eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch : m_fontSelector(fontSelector) 42eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch , m_traits(traits) 43eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch , m_firstNonCssConnectedFace(m_fontFaces.end()) 442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles){ 452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 46eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)CSSSegmentedFontFace::~CSSSegmentedFontFace() 482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles){ 492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) pruneTable(); 502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#if !ENABLE(OILPAN) 512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) for (FontFaceList::iterator it = m_fontFaces.begin(); it != m_fontFaces.end(); ++it) 522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) (*it)->cssFontFace()->clearSegmentedFontFace(); 532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif 542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void CSSSegmentedFontFace::pruneTable() 572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles){ 582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Make sure the glyph page tree prunes out all uses of this custom font. 592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (m_fontDataTable.isEmpty()) 602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return; 612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) m_fontDataTable.clear(); 632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)bool CSSSegmentedFontFace::isValid() const 662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles){ 672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Valid if at least one font face is valid. 682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) for (FontFaceList::const_iterator it = m_fontFaces.begin(); it != m_fontFaces.end(); ++it) { 69eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch if ((*it)->cssFontFace()->isValid()) 702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return true; 712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 72eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch return false; 732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void CSSSegmentedFontFace::fontLoaded(CSSFontFace*) 76eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch{ 77eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch pruneTable(); 782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 80eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdochvoid CSSSegmentedFontFace::fontLoadWaitLimitExceeded(CSSFontFace*) 812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles){ 825d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) pruneTable(); 832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 84eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)void CSSSegmentedFontFace::addFontFace(PassRefPtrWillBeRawPtr<FontFace> prpFontFace, bool cssConnected) 862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles){ 872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) RefPtrWillBeRawPtr<FontFace> fontFace = prpFontFace; 882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) pruneTable(); 89eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch fontFace->cssFontFace()->setSegmentedFontFace(this); 90 if (cssConnected) { 91 m_fontFaces.insertBefore(m_firstNonCssConnectedFace, fontFace); 92 } else { 93 // This is the only place in Blink that is using addReturnIterator. 94 FontFaceList::iterator iterator = m_fontFaces.addReturnIterator(fontFace); 95 if (m_firstNonCssConnectedFace == m_fontFaces.end()) 96 m_firstNonCssConnectedFace = iterator; 97 } 98} 99 100void CSSSegmentedFontFace::removeFontFace(PassRefPtrWillBeRawPtr<FontFace> prpFontFace) 101{ 102 RefPtrWillBeRawPtr<FontFace> fontFace = prpFontFace; 103 FontFaceList::iterator it = m_fontFaces.find(fontFace); 104 if (it == m_fontFaces.end()) 105 return; 106 107 if (it == m_firstNonCssConnectedFace) 108 ++m_firstNonCssConnectedFace; 109 m_fontFaces.remove(it); 110 111 pruneTable(); 112 fontFace->cssFontFace()->clearSegmentedFontFace(); 113} 114 115static void appendFontData(SegmentedFontData* newFontData, PassRefPtr<SimpleFontData> prpFaceFontData, const CSSFontFace::UnicodeRangeSet& ranges) 116{ 117 RefPtr<SimpleFontData> faceFontData = prpFaceFontData; 118 unsigned numRanges = ranges.size(); 119 if (!numRanges) { 120 newFontData->appendRange(FontDataRange(0, 0x7FFFFFFF, faceFontData)); 121 return; 122 } 123 124 for (unsigned j = 0; j < numRanges; ++j) 125 newFontData->appendRange(FontDataRange(ranges.rangeAt(j).from(), ranges.rangeAt(j).to(), faceFontData)); 126} 127 128PassRefPtr<FontData> CSSSegmentedFontFace::getFontData(const FontDescription& fontDescription) 129{ 130 if (!isValid()) 131 return nullptr; 132 133 FontTraits desiredTraits = fontDescription.traits(); 134 FontCacheKey key = fontDescription.cacheKey(FontFaceCreationParams(), desiredTraits); 135 136 RefPtr<SegmentedFontData>& fontData = m_fontDataTable.add(key.hash(), nullptr).storedValue->value; 137 if (fontData && fontData->numRanges()) 138 return fontData; // No release, we have a reference to an object in the cache which should retain the ref count it has. 139 140 if (!fontData) 141 fontData = SegmentedFontData::create(); 142 143 FontDescription requestedFontDescription(fontDescription); 144 requestedFontDescription.setTraits(m_traits); 145 requestedFontDescription.setSyntheticBold(m_traits.weight() < FontWeight600 && desiredTraits.weight() >= FontWeight600); 146 requestedFontDescription.setSyntheticItalic(m_traits.style() == FontStyleNormal && desiredTraits.style() == FontStyleItalic); 147 148 for (FontFaceList::reverse_iterator it = m_fontFaces.rbegin(); it != m_fontFaces.rend(); ++it) { 149 if (!(*it)->cssFontFace()->isValid()) 150 continue; 151 if (RefPtr<SimpleFontData> faceFontData = (*it)->cssFontFace()->getFontData(requestedFontDescription)) { 152 ASSERT(!faceFontData->isSegmented()); 153#if ENABLE(SVG_FONTS) 154 // For SVG Fonts that specify that they only support the "normal" variant, we will assume they are incapable 155 // of small-caps synthesis and just ignore the font face. 156 if (faceFontData->isSVGFont() && desiredTraits.variant() == FontVariantSmallCaps && m_traits.variant() == FontVariantNormal) 157 continue; 158#endif 159 appendFontData(fontData.get(), faceFontData.release(), (*it)->cssFontFace()->ranges()); 160 } 161 } 162 if (fontData->numRanges()) 163 return fontData; // No release, we have a reference to an object in the cache which should retain the ref count it has. 164 165 return nullptr; 166} 167 168bool CSSSegmentedFontFace::isLoading() const 169{ 170 for (FontFaceList::const_iterator it = m_fontFaces.begin(); it != m_fontFaces.end(); ++it) { 171 if ((*it)->loadStatus() == FontFace::Loading) 172 return true; 173 } 174 return false; 175} 176 177bool CSSSegmentedFontFace::isLoaded() const 178{ 179 for (FontFaceList::const_iterator it = m_fontFaces.begin(); it != m_fontFaces.end(); ++it) { 180 if ((*it)->loadStatus() != FontFace::Loaded) 181 return false; 182 } 183 return true; 184} 185 186void CSSSegmentedFontFace::willUseFontData(const FontDescription& fontDescription, UChar32 character) 187{ 188 for (FontFaceList::reverse_iterator it = m_fontFaces.rbegin(); it != m_fontFaces.rend(); ++it) { 189 if ((*it)->loadStatus() != FontFace::Unloaded) 190 break; 191 if ((*it)->cssFontFace()->maybeScheduleFontLoad(fontDescription, character)) 192 break; 193 } 194} 195 196bool CSSSegmentedFontFace::checkFont(const String& text) const 197{ 198 for (FontFaceList::const_iterator it = m_fontFaces.begin(); it != m_fontFaces.end(); ++it) { 199 if ((*it)->loadStatus() != FontFace::Loaded && (*it)->cssFontFace()->ranges().intersectsWith(text)) 200 return false; 201 } 202 return true; 203} 204 205void CSSSegmentedFontFace::match(const String& text, WillBeHeapVector<RefPtrWillBeMember<FontFace> >& faces) const 206{ 207 for (FontFaceList::const_iterator it = m_fontFaces.begin(); it != m_fontFaces.end(); ++it) { 208 if ((*it)->cssFontFace()->ranges().intersectsWith(text)) 209 faces.append(*it); 210 } 211} 212 213void CSSSegmentedFontFace::trace(Visitor* visitor) 214{ 215#if ENABLE(OILPAN) 216 visitor->trace(m_fontSelector); 217 visitor->trace(m_fontFaces); 218#endif 219} 220 221} 222