#include <qwindowsfontdatabasebase_p.h>

Inheritance diagram for QWindowsFontDatabaseBase:

Collaboration diagram for QWindowsFontDatabaseBase:

Classes
class	EmbeddedFont

class	FontTable

Public Member Functions
	QWindowsFontDatabaseBase ()

	~QWindowsFontDatabaseBase () override

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.

void	invalidate () override
	This function is called whenever the font database is invalidated.

QFontDef	sanitizeRequest (QFontDef request) 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 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 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.

virtual bool	supportsVariableApplicationFonts () const
	Returns true if this font database supports loading named instances from variable application fonts.

Static Public Member Functions
static int	defaultVerticalDPI ()

static QSharedPointer< QWindowsFontEngineData >	data ()

static QFont	systemDefaultFont ()

static HFONT	systemFont ()

static LOGFONT	fontDefToLOGFONT (const QFontDef &fontDef, const QString &faceName)

static QFont	LOGFONT_to_QFont (const LOGFONT &lf, int verticalDPI=0)

static QString	familyForStyleHint (QFont::StyleHint styleHint)

static QStringList	extraTryFontsForFamily (const QString &family)

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.

Detailed Description

Definition at line 54 of file qwindowsfontdatabasebase_p.h.

Constructor & Destructor Documentation

◆ QWindowsFontDatabaseBase()

QWindowsFontDatabaseBase::QWindowsFontDatabaseBase ( )

Definition at line 516 of file qwindowsfontdatabasebase.cpp.

◆ ~QWindowsFontDatabaseBase()

QWindowsFontDatabaseBase::~QWindowsFontDatabaseBase ( )

override

Definition at line 520 of file qwindowsfontdatabasebase.cpp.

Member Function Documentation

◆ data()

QSharedPointer< QWindowsFontEngineData > QWindowsFontDatabaseBase::data ( )

static

Definition at line 528 of file qwindowsfontdatabasebase.cpp.

References qCWarning.

Referenced by QWindowsFontDatabase::QWindowsFontDatabase(), QWindowsFontDatabase::fontEngine(), fontEngine(), QWindowsFontDatabase::fontEngine(), QWindowsDirectWriteFontDatabase::populateFamilyAliases(), QWindowsDirectWriteFontDatabase::populateFontDatabase(), and QWindowsDirectWriteFontDatabase::supportsVariableApplicationFonts().

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◆ defaultVerticalDPI()

int QWindowsFontDatabaseBase::defaultVerticalDPI ( )

static

Definition at line 599 of file qwindowsfontdatabasebase.cpp.

Referenced by QWindowsFontEngine::cloneWithSize(), QWindowsFontDatabase::fontEngine(), QWindowsDirectWriteFontDatabase::fontEngine(), QWindowsFontDatabase::fontEngine(), LOGFONT_to_QFont(), and systemDefaultFont().

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◆ extraTryFontsForFamily()

QStringList QWindowsFontDatabaseBase::extraTryFontsForFamily ( const QString & family )

static

Definition at line 955 of file qwindowsfontdatabasebase.cpp.

References ch_CN_tryFonts, ch_TW_tryFonts, contains(), QFontDatabase::families(), QString::fromLatin1(), QFontDatabase::hasFamily(), jp_tryFonts, kr_tryFonts, other_tryFonts, QStringLiteral, QFontDatabase::Symbol, tryFonts, and QFontDatabase::writingSystems().

Referenced by QWindowsDirectWriteFontDatabase::fallbacksForFamily(), QWindowsFontDatabaseFT::fallbacksForFamily(), and QWindowsFontDatabase::fallbacksForFamily().

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◆ familyForStyleHint()

QString QWindowsFontDatabaseBase::familyForStyleHint ( QFont::StyleHint styleHint )

static

Definition at line 876 of file qwindowsfontdatabasebase.cpp.

References QFont::Courier, QFont::Cursive, QFont::Decorative, QFont::Fantasy, QFont::Helvetica, QFont::Monospace, QStringLiteral, QFont::System, and QFont::Times.

Referenced by QWindowsDirectWriteFontDatabase::fallbacksForFamily(), QWindowsFontDatabaseFT::fallbacksForFamily(), and QWindowsFontDatabase::fallbacksForFamily().

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◆ fontDefToLOGFONT()

LOGFONT QWindowsFontDatabaseBase::fontDefToLOGFONT	(	const QFontDef &	fontDef,
		const QString &	faceName )

static

Definition at line 604 of file qwindowsfontdatabasebase.cpp.

References CLEARTYPE_QUALITY, QFont::Courier, QFont::ForceOutline, QFont::Helvetica, hint(), QFont::NoAntialias, QFont::Normal, QFont::NoSubpixelAntialias, QFont::OldEnglish, QFont::PreferAntialias, QFont::PreferBitmap, QFont::PreferDevice, QFont::PreferMatch, QFont::PreferOutline, QFont::PreferQuality, Q_UNLIKELY, qCritical, qPrintable, qRound(), request, QFont::StyleNormal, QFont::System, and QFont::Times.

Referenced by QWindowsFontDatabase::createEngine(), and QWindowsDirect2DPaintEnginePrivate::fontFaceFromFontEngine().

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◆ fontEngine() [1/2]

QFontEngine * QWindowsFontDatabaseBase::fontEngine	(	const QByteArray &	fontData,
		qreal	pixelSize,
		QFont::HintingPreference	hintingPreference )

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 843 of file qwindowsfontdatabasebase.cpp.

References data(), QFontDef::families, font, QFontEngine::fontDef, fontEngine(), QFontDef::hintingPreference, and Q_UNUSED.

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◆ fontEngine() [2/2]

QFontEngine * QWindowsFontDatabaseBase::fontEngine	(	const QFontDef &	fontDef,
		void *	handle )

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.

Definition at line 836 of file qwindowsfontdatabasebase.cpp.

References QPlatformFontDatabase::fontEngine().

Referenced by QWindowsDirectWriteFontDatabase::fontEngine(), QWindowsFontDatabase::fontEngine(), fontEngine(), and QWindowsFontDatabaseBase::EmbeddedFont::updateFromOS2Table().

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