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Qt 6.x
The Qt SDK
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Qt 6.x
The Qt SDK
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#include <qcoretextfontdatabase_p.h>
Inheritance diagram for QCoreTextFontDatabaseEngineFactory< T >: Collaboration diagram for QCoreTextFontDatabaseEngineFactory< T >:Public Member Functions | |
| QFontEngine * | fontEngine (const QFontDef &fontDef, void *handle) override |
| Returns the font engine that can be used to render the font described by the font definition, fontDef, in the specified script. | |
| QFontEngine * | fontEngine (const QByteArray &fontData, qreal pixelSize, QFont::HintingPreference hintingPreference) override |
| Returns the font engine that will be used to back a QRawFont, based on the given \fontData, pixelSize, and hintingPreference. | |
| QFontEngine * | fontEngine (const QFontDef &fontDef, void *usrPtr) |
| Returns the font engine that can be used to render the font described by the font definition, fontDef, in the specified script. | |
| QFontEngine * | fontEngine (const QFontDef &fontDef, void *usrPtr) |
| Returns the font engine that can be used to render the font described by the font definition, fontDef, in the specified script. | |
| Public Member Functions inherited from QCoreTextFontDatabase | |
| QCoreTextFontDatabase () | |
| ~QCoreTextFontDatabase () | |
| void | populateFontDatabase () override |
| This function is called once at startup by Qt's internal font database. | |
| bool | populateFamilyAliases (const QString &missingFamily) override |
| void | populateFamily (const QString &familyName) override |
| This function is called whenever a lazily populated family, populated through registerFontFamily(), needs full population. | |
| void | invalidate () override |
| This function is called whenever the font database is invalidated. | |
| QStringList | fallbacksForFamily (const QString &family, QFont::Style style, QFont::StyleHint styleHint, QChar::Script script) const override |
| Returns a list of alternative fonts for the specified family and style and script using the styleHint given. | |
| QStringList | addApplicationFont (const QByteArray &fontData, const QString &fileName, QFontDatabasePrivate::ApplicationFont *applicationFont=nullptr) override |
| Adds an application font described by the font contained supplied fontData or using the font contained in the file referenced by fileName. | |
| void | releaseHandle (void *handle) override |
| Releases the specified font handle. | |
| bool | isPrivateFontFamily (const QString &family) const override |
| Returns true if the font family is private. | |
| QFont | defaultFont () const override |
| Returns the default system font. | |
| bool | fontsAlwaysScalable () const override |
| Return true if all fonts are considered scalable when using this font database. | |
| QList< int > | standardSizes () const override |
| Return list of standard font sizes when using this font database. | |
| QFont * | themeFont (QPlatformTheme::Font) const |
| Public Member Functions inherited from QPlatformFontDatabase | |
| virtual | ~QPlatformFontDatabase () |
| virtual void | populateFontDatabase () |
| This function is called once at startup by Qt's internal font database. | |
| virtual bool | populateFamilyAliases (const QString &missingFamily) |
| virtual void | populateFamily (const QString &familyName) |
| This function is called whenever a lazily populated family, populated through registerFontFamily(), needs full population. | |
| virtual void | invalidate () |
| This function is called whenever the font database is invalidated. | |
| virtual QStringList | fallbacksForFamily (const QString &family, QFont::Style style, QFont::StyleHint styleHint, QChar::Script script) const |
| Returns a list of alternative fonts for the specified family and style and script using the styleHint given. | |
| virtual QStringList | addApplicationFont (const QByteArray &fontData, const QString &fileName, QFontDatabasePrivate::ApplicationFont *font=nullptr) |
| Adds an application font described by the font contained supplied fontData or using the font contained in the file referenced by fileName. | |
| virtual QFontEngine * | fontEngine (const QFontDef &fontDef, void *handle) |
| Returns the font engine that can be used to render the font described by the font definition, fontDef, in the specified script. | |
| virtual QFontEngine * | fontEngine (const QByteArray &fontData, qreal pixelSize, QFont::HintingPreference hintingPreference) |
| Returns the font engine that will be used to back a QRawFont, based on the given \fontData, pixelSize, and hintingPreference. | |
| virtual QFontEngineMulti * | fontEngineMulti (QFontEngine *fontEngine, QChar::Script script) |
| Returns a multi font engine in the specified script to encapsulate fontEngine with the option to fall back to the fonts given by fallbacks if fontEngine does not support a certain character. | |
| virtual void | releaseHandle (void *handle) |
| Releases the specified font handle. | |
| virtual QString | fontDir () const |
| Returns the directory containing the fonts used by the database. | |
| virtual QFont | defaultFont () const |
| Returns the default system font. | |
| virtual bool | isPrivateFontFamily (const QString &family) const |
| Returns true if the font family is private. | |
| virtual QString | resolveFontFamilyAlias (const QString &family) const |
| Resolve alias to actual font family names. | |
| virtual bool | fontsAlwaysScalable () const |
| Return true if all fonts are considered scalable when using this font database. | |
| virtual QList< int > | standardSizes () const |
| Return list of standard font sizes when using this font database. | |
Additional Inherited Members | |
| Static Public Member Functions inherited from QPlatformFontDatabase | |
| static QSupportedWritingSystems | writingSystemsFromTrueTypeBits (quint32 unicodeRange[4], quint32 codePageRange[2]) |
| Helper function that determines the writing systems support by a given unicodeRange and codePageRange. | |
| static QSupportedWritingSystems | writingSystemsFromOS2Table (const char *os2Table, size_t length) |
| Helper function that determines the writing system support based on the contents of the OS/2 table in the font. | |
| static void | registerFont (const QString &familyname, const QString &stylename, const QString &foundryname, QFont::Weight weight, QFont::Style style, QFont::Stretch stretch, bool antialiased, bool scalable, int pixelSize, bool fixedPitch, const QSupportedWritingSystems &writingSystems, void *handle) |
| Registers a font with the given set of attributes describing the font's foundry, family name, style and stretch information, pixel size, and supported writing systems. | |
| static void | registerFontFamily (const QString &familyName) |
| Registers a font family with the font database. | |
| static void | registerAliasToFontFamily (const QString &familyName, const QString &alias) |
| Helper function that register the alias for the familyName. | |
| static void | repopulateFontDatabase () |
| Requests that the platform font database should be repopulated. | |
| static bool | isFamilyPopulated (const QString &familyName) |
| Helper function that returns true if the font family has already been registered and populated. | |
Definition at line 74 of file qcoretextfontdatabase_p.h.
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overridevirtual |
Returns the font engine that will be used to back a QRawFont, based on the given \fontData, pixelSize, and hintingPreference.
This function is called by QRawFont, and does not play a part in the normal operations of QFontDatabase.
Reimplemented from QPlatformFontDatabase.
Definition at line 528 of file qcoretextfontdatabase.mm.
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overridevirtual |
Returns the font engine that can be used to render the font described by the font definition, fontDef, in the specified script.
This function is called by QFontDatabase both for system fonts provided by the platform font database, as well as for application fonts added by the application developer.
The handle is the QPlatformFontDatabase specific handle passed when registering the font family via QPlatformFontDatabase::registerFont.
The function is called for both fonts added via a filename as well as fonts added from QByteArray data. Subclasses will need to handle both cases via its platform specific handle.
Reimplemented from QPlatformFontDatabase.
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virtual |
Returns the font engine that can be used to render the font described by the font definition, fontDef, in the specified script.
This function is called by QFontDatabase both for system fonts provided by the platform font database, as well as for application fonts added by the application developer.
The handle is the QPlatformFontDatabase specific handle passed when registering the font family via QPlatformFontDatabase::registerFont.
The function is called for both fonts added via a filename as well as fonts added from QByteArray data. Subclasses will need to handle both cases via its platform specific handle.
Reimplemented from QPlatformFontDatabase.
Definition at line 478 of file qcoretextfontdatabase.mm.
References QCFType< T >::constructFromGet(), font, QFontDef::pixelSize, and qt_transform_from_fontdef().
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virtual |
Returns the font engine that can be used to render the font described by the font definition, fontDef, in the specified script.
This function is called by QFontDatabase both for system fonts provided by the platform font database, as well as for application fonts added by the application developer.
The handle is the QPlatformFontDatabase specific handle passed when registering the font family via QPlatformFontDatabase::registerFont.
The function is called for both fonts added via a filename as well as fonts added from QByteArray data. Subclasses will need to handle both cases via its platform specific handle.
Reimplemented from QPlatformFontDatabase.
Definition at line 500 of file qcoretextfontdatabase.mm.
References QFontEngineFT::create(), QFontEngine::FaceId::filename, QFreetypeFace::getFaceIndexByStyleName(), QFontDef::hintingPreference, QFontEngine::FaceId::index, kQtFontDataAttribute, QUrl::path(), QFontDef::pixelSize, Q_ASSERT, and url.
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1.9.7