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  #ifndef QCORETEXTFONTDATABASE_H
  #define QCORETEXTFONTDATABASE_H
  
  //
  //  W A R N I N G
  //  -------------
  //
  // This file is not part of the Qt API.  It exists purely as an
  // implementation detail.  This header file may change from version to
  // version without notice, or even be removed.
  //
  // We mean it.
  //
  
  #include <qglobal.h>
  
  #include <qpa/qplatformfontdatabase.h>
  #include <qpa/qplatformtheme.h>
  #include <private/qcore_mac_p.h>
  
  Q_FORWARD_DECLARE_CF_TYPE(CTFontDescriptor);
  Q_FORWARD_DECLARE_CF_TYPE(CTFont);
  
  Q_DECLARE_METATYPE(QCFType<CGFontRef>);
  Q_DECLARE_METATYPE(QCFType<CFURLRef>);
  
  QT_BEGIN_NAMESPACE
  
  class QCoreTextFontDatabase : public QPlatformFontDatabase
  {
  public:
      QCoreTextFontDatabase();
      ~QCoreTextFontDatabase();
      void populateFontDatabase() override;
      bool populateFamilyAliases(const QString &missingFamily) override;
      void populateFamily(const QString &familyName) override;
      void invalidate() override;
  
      QStringList fallbacksForFamily(const QString &family, QFont::Style style, QFont::StyleHint styleHint, QChar::Script script) const override;
      QStringList addApplicationFont(const QByteArray &fontData, const QString &fileName) override;
      void releaseHandle(void *handle) override;
      bool isPrivateFontFamily(const QString &family) const override;
      QFont defaultFont() const override;
      bool fontsAlwaysScalable() const override;
      QList<int> standardSizes() const override;
  
      // For iOS and OS X platform themes
      QFont *themeFont(QPlatformTheme::Font) const;
      const QHash<QPlatformTheme::Font, QFont *> &themeFonts() const;
  
  protected:
      mutable QSet<CTFontDescriptorRef> m_systemFontDescriptors;
  
  private:
      void populateFromDescriptor(CTFontDescriptorRef font, const QString &familyName = QString());
      static CFArrayRef fallbacksForFamily(const QString &family);
  
      mutable QString defaultFontName;
  
      mutable QHash<QPlatformTheme::Font, QFont *> m_themeFonts;
      bool m_hasPopulatedAliases;
  };
  
  // Split out into separate template class so that the compiler doesn't have
  // to generate code for each override in QCoreTextFontDatabase for each T.
  
  template <class T>
  class QCoreTextFontDatabaseEngineFactory : public QCoreTextFontDatabase
  {
  public:
      QFontEngine *fontEngine(const QFontDef &fontDef, void *handle) override;
      QFontEngine *fontEngine(const QByteArray &fontData, qreal pixelSize, QFont::HintingPreference hintingPreference) override;
  };
  
  QT_END_NAMESPACE
  
  #endif // QCORETEXTFONTDATABASE_H
  