142 lines
4.9 KiB
C++
142 lines
4.9 KiB
C++
/*
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* Copyright (C) 2007, 2008, 2011 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "ActiveDOMObject.h"
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#include "CSSFontFace.h"
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#include "CSSFontFaceSet.h"
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#include "CachedResourceHandle.h"
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#include "Font.h"
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#include "FontSelector.h"
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#include "Timer.h"
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#include "WebKitFontFamilyNames.h"
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#include <memory>
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#include <wtf/Forward.h>
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#include <wtf/HashSet.h>
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#include <wtf/RefPtr.h>
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#include <wtf/text/StringHash.h>
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namespace WebCore {
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class CSSFontFaceRule;
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class CSSPrimitiveValue;
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class CSSSegmentedFontFace;
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class CSSValueList;
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class CachedFont;
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class ScriptExecutionContext;
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class StyleRuleFontFace;
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class CSSFontSelector final : public FontSelector, public CSSFontFace::Client, public CanMakeWeakPtr<CSSFontSelector>, public ActiveDOMObject {
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public:
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static Ref<CSSFontSelector> create(ScriptExecutionContext& context)
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{
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return adoptRef(*new CSSFontSelector(context));
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}
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virtual ~CSSFontSelector();
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unsigned version() const final { return m_version; }
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unsigned uniqueId() const final { return m_uniqueId; }
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FontRanges fontRangesForFamily(const FontDescription&, const AtomString&) final;
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size_t fallbackFontCount() final;
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RefPtr<Font> fallbackFontAt(const FontDescription&, size_t) final;
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void clearFonts();
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void emptyCaches();
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void buildStarted();
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void buildCompleted();
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void addFontFaceRule(StyleRuleFontFace&, bool isInitiatingElementInUserAgentShadowTree);
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FontCache& fontCache() const final { return m_fontCache.get(); }
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void fontCacheInvalidated() final;
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bool isEmpty() const;
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void registerForInvalidationCallbacks(FontSelectorClient&) final;
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void unregisterForInvalidationCallbacks(FontSelectorClient&) final;
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ScriptExecutionContext* scriptExecutionContext() const { return m_context.get(); }
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FontFaceSet* fontFaceSetIfExists();
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FontFaceSet& fontFaceSet();
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void incrementIsComputingRootStyleFont() { ++m_computingRootStyleFontCount; }
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void decrementIsComputingRootStyleFont() { --m_computingRootStyleFontCount; }
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void loadPendingFonts();
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// CSSFontFace::Client needs to be able to be held in a RefPtr.
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void ref() final { FontSelector::ref(); }
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void deref() final { FontSelector::deref(); }
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private:
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explicit CSSFontSelector(ScriptExecutionContext&);
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void dispatchInvalidationCallbacks();
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void opportunisticallyStartFontDataURLLoading(const FontCascadeDescription&, const AtomString& family) final;
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std::optional<AtomString> resolveGenericFamily(const FontDescription&, const AtomString& family);
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// CSSFontFace::Client
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void fontLoaded(CSSFontFace&) final;
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void fontStyleUpdateNeeded(CSSFontFace&) final;
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void fontModified();
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// ActiveDOMObject
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const char* activeDOMObjectName() const final { return "CSSFontSelector"_s; }
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struct PendingFontFaceRule {
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StyleRuleFontFace& styleRuleFontFace;
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bool isInitiatingElementInUserAgentShadowTree;
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};
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Vector<PendingFontFaceRule> m_stagingArea;
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WeakPtr<ScriptExecutionContext> m_context;
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Ref<FontCache> m_fontCache;
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RefPtr<FontFaceSet> m_fontFaceSet;
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Ref<CSSFontFaceSet> m_cssFontFaceSet;
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HashSet<FontSelectorClient*> m_clients;
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HashSet<RefPtr<CSSFontFace>> m_cssConnectionsPossiblyToRemove;
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HashSet<RefPtr<StyleRuleFontFace>> m_cssConnectionsEncounteredDuringBuild;
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CSSFontFaceSet::FontModifiedObserver m_fontModifiedObserver;
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unsigned m_uniqueId;
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unsigned m_version;
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unsigned m_computingRootStyleFontCount { 0 };
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bool m_creatingFont { false };
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bool m_buildIsUnderway { false };
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bool m_isStopped { false };
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WebKitFontFamilyNames::FamilyNamesList<AtomString> m_fontFamilyNames;
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};
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} // namespace WebCore
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