#pragma once
#include "CSSFontFaceRule.h"
#include "FontFeatureSettings.h"
#include "TextFlags.h"
#include "Timer.h"
#include <memory>
#include <wtf/Forward.h>
#include <wtf/HashSet.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/Vector.h>
#include <wtf/WeakPtr.h>
namespace JSC {
class ExecState;
}
namespace WebCore {
class CSSFontFaceSource;
class CSSFontSelector;
class CSSSegmentedFontFace;
class CSSValue;
class CSSValueList;
class Document;
class FontDescription;
class Font;
class FontFace;
class CSSFontFace final : public RefCounted<CSSFontFace> {
public:
static Ref<CSSFontFace> create(CSSFontSelector* fontSelector, StyleRuleFontFace* cssConnection = nullptr, FontFace* wrapper = nullptr, bool isLocalFallback = false)
{
return adoptRef(*new CSSFontFace(fontSelector, cssConnection, wrapper, isLocalFallback));
}
virtual ~CSSFontFace();
bool setFamilies(CSSValue&);
bool setStyle(CSSValue&);
bool setWeight(CSSValue&);
bool setUnicodeRange(CSSValue&);
bool setVariantLigatures(CSSValue&);
bool setVariantPosition(CSSValue&);
bool setVariantCaps(CSSValue&);
bool setVariantNumeric(CSSValue&);
bool setVariantAlternates(CSSValue&);
bool setVariantEastAsian(CSSValue&);
void setFeatureSettings(CSSValue&);
enum class Status;
struct UnicodeRange;
const CSSValueList* families() const { return m_families.get(); }
FontTraitsMask traitsMask() const { return m_traitsMask; }
const Vector<UnicodeRange>& ranges() const { return m_ranges; }
const FontFeatureSettings& featureSettings() const { return m_featureSettings; }
const FontVariantSettings& variantSettings() const { return m_variantSettings; }
void setVariantSettings(const FontVariantSettings& variantSettings) { m_variantSettings = variantSettings; }
void setTraitsMask(FontTraitsMask traitsMask) { m_traitsMask = traitsMask; }
bool isLocalFallback() const { return m_isLocalFallback; }
Status status() const { return m_status; }
StyleRuleFontFace* cssConnection() const { return m_cssConnection.get(); }
static Optional<FontTraitsMask> calculateStyleMask(CSSValue& style);
static Optional<FontTraitsMask> calculateWeightMask(CSSValue& weight);
class Client;
void addClient(Client&);
void removeClient(Client&);
bool allSourcesFailed() const;
void adoptSource(std::unique_ptr<CSSFontFaceSource>&&);
void sourcesPopulated() { m_sourcesPopulated = true; }
void fontLoaded(CSSFontFaceSource&);
void load();
RefPtr<Font> font(const FontDescription&, bool syntheticBold, bool syntheticItalic);
static void appendSources(CSSFontFace&, CSSValueList&, Document*, bool isInitiatingElementInUserAgentShadowTree);
class Client {
public:
virtual ~Client() { }
virtual void fontLoaded(CSSFontFace&) { }
virtual void fontStateChanged(CSSFontFace&, Status , Status ) { }
virtual void fontPropertyChanged(CSSFontFace&, CSSValueList* = nullptr) { }
virtual void ref() = 0;
virtual void deref() = 0;
};
enum class Status { Pending, Loading, TimedOut, Success, Failure };
struct UnicodeRange {
UChar32 from;
UChar32 to;
};
bool rangesMatchCodePoint(UChar32) const;
Ref<FontFace> wrapper();
void setWrapper(FontFace&);
FontFace* existingWrapper() { return m_wrapper.get(); }
bool webFontsShouldAlwaysFallBack() const;
bool purgeable() const;
void updateStyleIfNeeded();
#if ENABLE(SVG_FONTS)
bool hasSVGFontFaceSource() const;
#endif
private:
CSSFontFace(CSSFontSelector*, StyleRuleFontFace*, FontFace*, bool isLocalFallback);
size_t pump();
void setStatus(Status);
void notifyClientsOfFontPropertyChange();
void initializeWrapper();
void fontLoadEventOccurred();
void timeoutFired();
RefPtr<CSSValueList> m_families;
FontTraitsMask m_traitsMask { static_cast<FontTraitsMask>(FontStyleNormalMask | FontWeight400Mask) };
Vector<UnicodeRange> m_ranges;
FontFeatureSettings m_featureSettings;
FontVariantSettings m_variantSettings;
Timer m_timeoutTimer;
Vector<std::unique_ptr<CSSFontFaceSource>> m_sources;
RefPtr<CSSFontSelector> m_fontSelector;
RefPtr<StyleRuleFontFace> m_cssConnection;
HashSet<Client*> m_clients;
WeakPtr<FontFace> m_wrapper;
Status m_status { Status::Pending };
bool m_isLocalFallback { false };
bool m_sourcesPopulated { false };
bool m_mayBePurged { true };
};
}