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27 #include "core/css/CSSSegmentedFontFace.h"
29 #include "core/css/CSSFontFace.h"
30 #include "core/css/CSSFontSelector.h"
31 #include "platform/RuntimeEnabledFeatures.h"
32 #include "platform/fonts/FontCache.h"
33 #include "platform/fonts/FontDescription.h"
34 #include "platform/fonts/FontFaceCreationParams.h"
35 #include "platform/fonts/SegmentedFontData.h"
36 #include "platform/fonts/SimpleFontData.h"
40 CSSSegmentedFontFace::CSSSegmentedFontFace(CSSFontSelector* fontSelector, FontTraits traits)
41 : m_fontSelector(fontSelector)
43 , m_firstNonCssConnectedFace(m_fontFaces.end())
47 CSSSegmentedFontFace::~CSSSegmentedFontFace()
51 for (FontFaceList::iterator it = m_fontFaces.begin(); it != m_fontFaces.end(); ++it)
52 (*it)->cssFontFace()->clearSegmentedFontFace();
56 void CSSSegmentedFontFace::pruneTable()
58 // Make sure the glyph page tree prunes out all uses of this custom font.
59 if (m_fontDataTable.isEmpty())
62 m_fontDataTable.clear();
65 bool CSSSegmentedFontFace::isValid() const
67 // Valid if at least one font face is valid.
68 for (FontFaceList::const_iterator it = m_fontFaces.begin(); it != m_fontFaces.end(); ++it) {
69 if ((*it)->cssFontFace()->isValid())
75 void CSSSegmentedFontFace::fontLoaded(CSSFontFace*)
80 void CSSSegmentedFontFace::fontLoadWaitLimitExceeded(CSSFontFace*)
85 void CSSSegmentedFontFace::addFontFace(PassRefPtrWillBeRawPtr<FontFace> prpFontFace, bool cssConnected)
87 RefPtrWillBeRawPtr<FontFace> fontFace = prpFontFace;
89 fontFace->cssFontFace()->setSegmentedFontFace(this);
91 m_fontFaces.insertBefore(m_firstNonCssConnectedFace, fontFace);
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;
100 void CSSSegmentedFontFace::removeFontFace(PassRefPtrWillBeRawPtr<FontFace> prpFontFace)
102 RefPtrWillBeRawPtr<FontFace> fontFace = prpFontFace;
103 FontFaceList::iterator it = m_fontFaces.find(fontFace);
104 if (it == m_fontFaces.end())
107 if (it == m_firstNonCssConnectedFace)
108 ++m_firstNonCssConnectedFace;
109 m_fontFaces.remove(it);
112 fontFace->cssFontFace()->clearSegmentedFontFace();
115 static void appendFontData(SegmentedFontData* newFontData, PassRefPtr<SimpleFontData> prpFaceFontData, const CSSFontFace::UnicodeRangeSet& ranges)
117 RefPtr<SimpleFontData> faceFontData = prpFaceFontData;
118 unsigned numRanges = ranges.size();
120 newFontData->appendRange(FontDataRange(0, 0x7FFFFFFF, faceFontData));
124 for (unsigned j = 0; j < numRanges; ++j)
125 newFontData->appendRange(FontDataRange(ranges.rangeAt(j).from(), ranges.rangeAt(j).to(), faceFontData));
128 PassRefPtr<FontData> CSSSegmentedFontFace::getFontData(const FontDescription& fontDescription)
133 FontTraits desiredTraits = fontDescription.traits();
134 FontCacheKey key = fontDescription.cacheKey(FontFaceCreationParams(), desiredTraits);
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.
141 fontData = SegmentedFontData::create();
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);
148 for (FontFaceList::reverse_iterator it = m_fontFaces.rbegin(); it != m_fontFaces.rend(); ++it) {
149 if (!(*it)->cssFontFace()->isValid())
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)
159 appendFontData(fontData.get(), faceFontData.release(), (*it)->cssFontFace()->ranges());
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.
168 bool CSSSegmentedFontFace::isLoading() const
170 for (FontFaceList::const_iterator it = m_fontFaces.begin(); it != m_fontFaces.end(); ++it) {
171 if ((*it)->loadStatus() == FontFace::Loading)
177 bool CSSSegmentedFontFace::isLoaded() const
179 for (FontFaceList::const_iterator it = m_fontFaces.begin(); it != m_fontFaces.end(); ++it) {
180 if ((*it)->loadStatus() != FontFace::Loaded)
186 void CSSSegmentedFontFace::willUseFontData(const FontDescription& fontDescription, UChar32 character)
188 for (FontFaceList::reverse_iterator it = m_fontFaces.rbegin(); it != m_fontFaces.rend(); ++it) {
189 if ((*it)->loadStatus() != FontFace::Unloaded)
191 if ((*it)->cssFontFace()->maybeScheduleFontLoad(fontDescription, character))
196 bool CSSSegmentedFontFace::checkFont(const String& text) const
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))
205 void CSSSegmentedFontFace::match(const String& text, WillBeHeapVector<RefPtrWillBeMember<FontFace> >& faces) const
207 for (FontFaceList::const_iterator it = m_fontFaces.begin(); it != m_fontFaces.end(); ++it) {
208 if ((*it)->cssFontFace()->ranges().intersectsWith(text))
213 void CSSSegmentedFontFace::trace(Visitor* visitor)
216 visitor->trace(m_fontSelector);
217 visitor->trace(m_fontFaces);