131 lines
5.6 KiB
C++
131 lines
5.6 KiB
C++
/*
|
|
* Copyright (C) 2016-2017 Apple Inc. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
|
|
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "CSSFontFace.h"
|
|
#include <wtf/HashMap.h>
|
|
#include <wtf/Observer.h>
|
|
#include <wtf/Variant.h>
|
|
#include <wtf/Vector.h>
|
|
#include <wtf/WeakHashSet.h>
|
|
#include <wtf/text/StringHash.h>
|
|
|
|
namespace WebCore {
|
|
|
|
class CSSPrimitiveValue;
|
|
class FontFaceSet;
|
|
|
|
class CSSFontFaceSet final : public RefCounted<CSSFontFaceSet>, public CSSFontFace::Client {
|
|
public:
|
|
static Ref<CSSFontFaceSet> create(CSSFontSelector* owningFontSelector = nullptr)
|
|
{
|
|
return adoptRef(*new CSSFontFaceSet(owningFontSelector));
|
|
}
|
|
~CSSFontFaceSet();
|
|
|
|
using FontModifiedObserver = Observer<void()>;
|
|
void addFontModifiedObserver(const FontModifiedObserver&);
|
|
|
|
struct FontEventClient : public CanMakeWeakPtr<FontEventClient> {
|
|
virtual ~FontEventClient() = default;
|
|
virtual void faceFinished(CSSFontFace&, CSSFontFace::Status) = 0;
|
|
virtual void startedLoading() = 0;
|
|
virtual void completedLoading() = 0;
|
|
};
|
|
void addFontEventClient(const FontEventClient&);
|
|
|
|
bool hasFace(const CSSFontFace&) const;
|
|
size_t faceCount() const { return m_faces.size(); }
|
|
void add(CSSFontFace&);
|
|
void remove(const CSSFontFace&);
|
|
void purge();
|
|
void emptyCaches();
|
|
void clear();
|
|
CSSFontFace& operator[](size_t i);
|
|
|
|
CSSFontFace* lookUpByCSSConnection(StyleRuleFontFace&);
|
|
|
|
ExceptionOr<bool> check(const String& font, const String& text);
|
|
|
|
CSSSegmentedFontFace* fontFace(FontSelectionRequest, const AtomString& family);
|
|
|
|
enum class Status { Loading, Loaded };
|
|
Status status() const { return m_status; }
|
|
|
|
bool hasActiveFontFaces() { return status() == Status::Loading; }
|
|
|
|
ExceptionOr<Vector<std::reference_wrapper<CSSFontFace>>> matchingFacesExcludingPreinstalledFonts(const String& font, const String& text);
|
|
|
|
// CSSFontFace::Client needs to be able to be held in a RefPtr.
|
|
void ref() final { RefCounted::ref(); }
|
|
void deref() final { RefCounted::deref(); }
|
|
|
|
private:
|
|
CSSFontFaceSet(CSSFontSelector*);
|
|
|
|
void removeFromFacesLookupTable(const CSSFontFace&, const CSSValueList& familiesToSearchFor);
|
|
void addToFacesLookupTable(CSSFontFace&);
|
|
|
|
void incrementActiveCount();
|
|
void decrementActiveCount();
|
|
|
|
void fontStateChanged(CSSFontFace&, CSSFontFace::Status oldState, CSSFontFace::Status newState) final;
|
|
void fontPropertyChanged(CSSFontFace&, CSSValueList* oldFamilies = nullptr) final;
|
|
|
|
void ensureLocalFontFacesForFamilyRegistered(const String&);
|
|
|
|
static String familyNameFromPrimitive(const CSSPrimitiveValue&);
|
|
|
|
using FontSelectionKey = std::optional<FontSelectionRequest>;
|
|
struct FontSelectionKeyHash {
|
|
static unsigned hash(const FontSelectionKey& key) { return computeHash(key); }
|
|
static bool equal(const FontSelectionKey& a, const FontSelectionKey& b) { return a == b; }
|
|
static const bool safeToCompareToEmptyOrDeleted = true;
|
|
};
|
|
struct FontSelectionKeyHashTraits : SimpleClassHashTraits<FontSelectionKey> {
|
|
static const bool emptyValueIsZero = false;
|
|
static FontSelectionKey emptyValue() { return FontSelectionRequest { }; }
|
|
static void constructDeletedValue(FontSelectionKey& slot) { slot = std::nullopt; }
|
|
static bool isDeletedValue(const FontSelectionKey& value) { return !value; }
|
|
};
|
|
using FontSelectionHashMap = HashMap<FontSelectionKey, RefPtr<CSSSegmentedFontFace>, FontSelectionKeyHash, FontSelectionKeyHashTraits>;
|
|
|
|
// m_faces should hold all the same fonts as the ones inside inside m_facesLookupTable.
|
|
Vector<Ref<CSSFontFace>> m_faces; // We should investigate moving m_faces to FontFaceSet and making it reference FontFaces. This may clean up the font loading design.
|
|
HashMap<String, Vector<Ref<CSSFontFace>>, ASCIICaseInsensitiveHash> m_facesLookupTable;
|
|
HashMap<String, Vector<Ref<CSSFontFace>>, ASCIICaseInsensitiveHash> m_locallyInstalledFacesLookupTable;
|
|
HashMap<String, FontSelectionHashMap, ASCIICaseInsensitiveHash> m_cache;
|
|
HashMap<StyleRuleFontFace*, CSSFontFace*> m_constituentCSSConnections;
|
|
size_t m_facesPartitionIndex { 0 }; // All entries in m_faces before this index are CSS-connected.
|
|
Status m_status { Status::Loaded };
|
|
WeakHashSet<FontModifiedObserver> m_fontModifiedObservers;
|
|
WeakHashSet<FontEventClient> m_fontEventClients;
|
|
WeakPtr<CSSFontSelector> m_owningFontSelector;
|
|
unsigned m_activeCount { 0 };
|
|
};
|
|
|
|
}
|