#include <qfontengine_p.h>

Inheritance diagram for QFontEngineMulti:

Collaboration diagram for QFontEngineMulti:

Public Member Functions
	QFontEngineMulti (QFontEngine *engine, int script, const QStringList &fallbackFamilies=QStringList())

	~QFontEngineMulti ()

virtual glyph_t	glyphIndex (uint ucs4) const override

virtual int	stringToCMap (const QChar str, int len, QGlyphLayout glyphs, int *nglyphs, ShaperFlags flags) const override

virtual glyph_metrics_t	boundingBox (const QGlyphLayout &glyphs) override

virtual glyph_metrics_t	boundingBox (glyph_t glyph) override

virtual void	recalcAdvances (QGlyphLayout *, ShaperFlags) const override

virtual void	doKerning (QGlyphLayout *, ShaperFlags) const override

virtual void	addOutlineToPath (qreal, qreal, const QGlyphLayout &, QPainterPath *, QTextItem::RenderFlags flags) override

virtual void	getGlyphBearings (glyph_t glyph, qreal leftBearing=nullptr, qreal rightBearing=nullptr) override

virtual QFixed	ascent () const override

virtual QFixed	capHeight () const override

virtual QFixed	descent () const override

virtual QFixed	leading () const override

virtual QFixed	xHeight () const override

virtual QFixed	averageCharWidth () const override

virtual QImage	alphaMapForGlyph (glyph_t) override

virtual QImage	alphaMapForGlyph (glyph_t glyph, const QFixedPoint &subPixelPosition) override

virtual QImage	alphaMapForGlyph (glyph_t, const QTransform &t) override

virtual QImage	alphaMapForGlyph (glyph_t, const QFixedPoint &subPixelPosition, const QTransform &t) override

virtual QImage	alphaRGBMapForGlyph (glyph_t, const QFixedPoint &subPixelPosition, const QTransform &t) override

virtual QFixed	lineThickness () const override

virtual QFixed	underlinePosition () const override

virtual qreal	maxCharWidth () const override

virtual qreal	minLeftBearing () const override

virtual qreal	minRightBearing () const override

virtual bool	canRender (const QChar *string, int len) const override

int	fallbackFamilyCount () const

QString	fallbackFamilyAt (int at) const

void	setFallbackFamiliesList (const QStringList &fallbackFamilies)

QFontEngine *	engine (int at) const

void	ensureEngineAt (int at)

Public Member Functions inherited from QFontEngine
virtual	~QFontEngine ()

Type	type () const

virtual Properties	properties () const

virtual void	getUnscaledGlyph (glyph_t glyph, QPainterPath path, glyph_metrics_t metrics)

QByteArray	getSfntTable (uint tag) const

virtual bool	getSfntTableData (uint tag, uchar buffer, uint length) const
	Returns `true` if the font table idetified by tag exists in the font; returns `false` otherwise.

virtual FaceId	faceId () const

virtual int	synthesized () const

bool	supportsSubPixelPositions () const

virtual bool	supportsHorizontalSubPixelPositions () const

virtual bool	supportsVerticalSubPixelPositions () const

virtual QFixedPoint	subPixelPositionFor (const QFixedPoint &position) const

QFixed	subPixelPositionForX (QFixed x) const

bool	isColorFont () const

virtual QFixed	emSquareSize () const

virtual void	addGlyphsToPath (glyph_t glyphs, QFixedPoint positions, int nglyphs, QPainterPath *path, QTextItem::RenderFlags flags)

void	getGlyphPositions (const QGlyphLayout &glyphs, const QTransform &matrix, QTextItem::RenderFlags flags, QVarLengthArray< glyph_t > &glyphs_out, QVarLengthArray< QFixedPoint > &positions)

void	addBitmapFontToPath (qreal x, qreal y, const QGlyphLayout &, QPainterPath *, QTextItem::RenderFlags)

virtual QImage	bitmapForGlyph (glyph_t, const QFixedPoint &subPixelPosition, const QTransform &t, const QColor &color=QColor())

virtual Glyph *	glyphData (glyph_t glyph, const QFixedPoint &subPixelPosition, GlyphFormat neededFormat, const QTransform &t)

virtual bool	hasInternalCaching () const

virtual glyph_metrics_t	alphaMapBoundingBox (glyph_t glyph, const QFixedPoint &, const QTransform &matrix, GlyphFormat)

virtual void	removeGlyphFromCache (glyph_t)

virtual glyph_metrics_t	boundingBox (glyph_t glyph, const QTransform &matrix)

glyph_metrics_t	tightBoundingBox (const QGlyphLayout &glyphs)

bool	canRender (uint ucs4) const

virtual bool	supportsTransformation (const QTransform &transform) const

virtual int	glyphCount () const

virtual int	glyphMargin (GlyphFormat format)

virtual QFontEngine *	cloneWithSize (qreal) const

virtual Qt::HANDLE	handle () const

void *	harfbuzzFont () const

void *	harfbuzzFace () const

bool	supportsScript (QChar::Script script) const

virtual int	getPointInOutline (glyph_t glyph, int flags, quint32 point, QFixed xpos, QFixed ypos, quint32 *nPoints)

void	clearGlyphCache (const void *key)

void	setGlyphCache (const void key, QFontEngineGlyphCache data)

QFontEngineGlyphCache *	glyphCache (const void *key, GlyphFormat format, const QTransform &transform, const QColor &color=QColor()) const

virtual bool	hasUnreliableGlyphOutline () const

virtual bool	expectsGammaCorrectedBlending () const

virtual void	setDefaultHintStyle (HintStyle)

void	loadKerningPairs (QFixed scalingFactor)

Static Public Member Functions
static uchar	highByte (glyph_t glyph)

static QFontEngine *	createMultiFontEngine (QFontEngine *fe, int script)

Static Public Member Functions inherited from QFontEngine
static bool	isIgnorableChar (char32_t ucs4)

static bool	scriptRequiresOpenType (QChar::Script script)

static const uchar *	getCMap (const uchar table, uint tableSize, bool isSymbolFont, int *cmapSize)

static quint32	getTrueTypeGlyphIndex (const uchar *cmap, int cmapSize, uint unicode)

static QByteArray	convertToPostscriptFontFamilyName (const QByteArray &fontFamily)

Protected Member Functions
virtual void	ensureFallbackFamiliesQueried ()

virtual bool	shouldLoadFontEngineForCharacter (int at, uint ucs4) const

virtual QFontEngine *	loadEngine (int at)

Protected Member Functions inherited from QFontEngine
	QFontEngine (Type type)

QFixed	firstLeftBearing (const QGlyphLayout &glyphs)

QFixed	lastRightBearing (const QGlyphLayout &glyphs)

QFixed	calculatedCapHeight () const

virtual void	initializeHeightMetrics () const

bool	processHheaTable () const

bool	processOS2Table () const

Additional Inherited Members
Public Types inherited from QFontEngine
enum	Type { Box , Multi , Win , Mac , Freetype , QPF1 , QPF2 , Proxy , DirectWrite , TestFontEngine = 0x1000 }

enum	GlyphFormat { Format_None , Format_Render = Format_None , Format_Mono , Format_A8 , Format_A32 , Format_ARGB }

enum	ShaperFlag { DesignMetrics = 0x0002 , GlyphIndicesOnly = 0x0004 , FullStringFallback = 0x008 }

enum	SynthesizedFlags { SynthesizedItalic = 0x1 , SynthesizedBold = 0x2 , SynthesizedStretch = 0x4 }

enum	HintStyle { HintNone , HintLight , HintMedium , HintFull }

enum	SubpixelAntialiasingType { Subpixel_None , Subpixel_RGB , Subpixel_BGR , Subpixel_VRGB , Subpixel_VBGR }

Public Attributes inherited from QFontEngine
QAtomicInt	ref

QFontDef	fontDef

Holder	font_

Holder	face_

struct QFontEngine::FaceData	faceData

uint	cache_cost

uint	fsType: 16

bool	symbol

bool	isSmoothlyScalable

QList< KernPair >	kerning_pairs

GlyphFormat	glyphFormat

int	m_subPixelPositionCount

Protected Attributes inherited from QFontEngine
QFixed	m_ascent

QFixed	m_descent

QFixed	m_leading

bool	m_heightMetricsQueried

Detailed Description

Definition at line 436 of file qfontengine_p.h.

Constructor & Destructor Documentation

◆ QFontEngineMulti()

QFontEngineMulti::QFontEngineMulti	(	QFontEngine *	engine,
		int	script,
		const QStringList &	fallbackFamilies = QStringList() )

explicit

Definition at line 1695 of file qfontengine.cpp.

References QFontEngine::cache_cost, engine, QFontEngine::fontDef, QFontEngine::Multi, Q_ASSERT, and QList< T >::resize().

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◆ ~QFontEngineMulti()

QFontEngineMulti::~QFontEngineMulti ( )

Definition at line 1717 of file qfontengine.cpp.

References QList< T >::at(), QBasicAtomicInteger< T >::deref(), i, QFontEngine::ref, and QList< T >::size().

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Member Function Documentation

◆ addOutlineToPath()

void QFontEngineMulti::addOutlineToPath	(	qreal	x,
		qreal	y,
		const QGlyphLayout &	glyphs,
		QPainterPath *	path,
		QTextItem::RenderFlags	flags )

overridevirtual

Reimplemented from QFontEngine.

Definition at line 2063 of file qfontengine.cpp.

References QGlyphLayout::advances, engine, QGlyphLayout::glyphs, highByte(), i, QGlyphLayout::mid(), QGlyphLayout::numGlyphs, QTextItem::RightToLeft, stripped(), and QFixed::toReal().

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◆ alphaMapForGlyph() [1/4]

QImage QFontEngineMulti::alphaMapForGlyph	(	glyph_t	glyph,
		const QFixedPoint &	subPixelPosition )

overridevirtual

Reimplemented from QFontEngine.

Definition at line 2295 of file qfontengine.cpp.

References engine, highByte(), and stripped().

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◆ alphaMapForGlyph() [2/4]

QImage QFontEngineMulti::alphaMapForGlyph ( glyph_t glyph )

overridevirtual

Create a qimage with the alpha values for the glyph. Returns an image indexed_8 with index values ranging from 0=fully transparent to 255=opaque

Reimplemented from QFontEngine.

Definition at line 2289 of file qfontengine.cpp.

References engine, highByte(), and stripped().

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◆ alphaMapForGlyph() [3/4]

QImage QFontEngineMulti::alphaMapForGlyph	(	glyph_t	glyph,
		const QFixedPoint &	subPixelPosition,
		const QTransform &	t )

overridevirtual

Reimplemented from QFontEngine.

Definition at line 2307 of file qfontengine.cpp.

References engine, highByte(), and stripped().

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◆ alphaMapForGlyph() [4/4]

QImage QFontEngineMulti::alphaMapForGlyph	(	glyph_t	glyph,
		const QTransform &	t )

overridevirtual

Reimplemented from QFontEngine.

Definition at line 2301 of file qfontengine.cpp.

References engine, highByte(), and stripped().

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◆ alphaRGBMapForGlyph()

QImage QFontEngineMulti::alphaRGBMapForGlyph	(	glyph_t	glyph,
		const QFixedPoint &	subPixelPosition,
		const QTransform &	t )

overridevirtual

Reimplemented from QFontEngine.

Definition at line 2315 of file qfontengine.cpp.

References engine, highByte(), and stripped().

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◆ ascent()

QFixed QFontEngineMulti::ascent ( ) const

overridevirtual

Reimplemented from QFontEngine.

Definition at line 2214 of file qfontengine.cpp.

References engine.

◆ averageCharWidth()

QFixed QFontEngineMulti::averageCharWidth ( ) const

overridevirtual

Reimplemented from QFontEngine.

Definition at line 2233 of file qfontengine.cpp.

References engine.

◆ boundingBox() [1/2]

glyph_metrics_t QFontEngineMulti::boundingBox ( const QGlyphLayout & glyphs )

overridevirtual

Reimplemented from QFontEngine.

Definition at line 1993 of file qfontengine.cpp.

References engine, QGlyphLayout::glyphs, highByte(), i, QGlyphLayout::mid(), QGlyphLayout::numGlyphs, qMax(), qMin(), and stripped().

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◆ boundingBox() [2/2]

glyph_metrics_t QFontEngineMulti::boundingBox ( glyph_t glyph )

overridevirtual

Implements QFontEngine.

Definition at line 2208 of file qfontengine.cpp.

References engine, highByte(), and stripped().

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◆ canRender()

bool QFontEngineMulti::canRender	(	const QChar *	string,
		int	len ) const

overridevirtual

Reimplemented from QFontEngine.

Definition at line 2263 of file qfontengine.cpp.

References canRender(), engine, QFontEngine::GlyphIndicesOnly, i, QGlyphLayout::numGlyphs, and stringToCMap().

Referenced by canRender().

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◆ capHeight()

QFixed QFontEngineMulti::capHeight ( ) const

overridevirtual

Implements QFontEngine.

Definition at line 2217 of file qfontengine.cpp.

References engine.

◆ createMultiFontEngine()

QFontEngine * QFontEngineMulti::createMultiFontEngine	(	QFontEngine *	fe,
		int	script )

static

Definition at line 2331 of file qfontengine.cpp.

References engine, QSet< T >::find(), QGuiApplicationPrivate::instance(), QFontCache::instance(), it, QFontEngine::Multi, and Q_ASSERT.

Referenced by QTextEngine::fontEngine().

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◆ descent()

QFixed QFontEngineMulti::descent ( ) const

overridevirtual

Reimplemented from QFontEngine.

Definition at line 2220 of file qfontengine.cpp.

References engine.

◆ doKerning()

void QFontEngineMulti::doKerning	(	QGlyphLayout *	,
		ShaperFlags	) const

overridevirtual

Reimplemented from QFontEngine.

Definition at line 2165 of file qfontengine.cpp.

References engine, QGlyphLayout::glyphs, highByte(), i, QGlyphLayout::mid(), QGlyphLayout::numGlyphs, and stripped().

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◆ engine()

QFontEngine * QFontEngineMulti::engine ( int at ) const

inline

Definition at line 480 of file qfontengine_p.h.

References at, and Q_ASSERT.

Referenced by QPainterPrivate::drawTextItem(), and QRawFont::fromFont().

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◆ ensureEngineAt()

void QFontEngineMulti::ensureEngineAt ( int at )

Definition at line 1758 of file qfontengine.cpp.

References QList< T >::at(), at, engine, ensureFallbackFamiliesQueried(), QFontEngine::fontDef, loadEngine(), QFontEngine::Multi, QFontDef::pixelSize, Q_ASSERT, and QList< T >::size().

Referenced by QPainterPrivate::drawTextItem(), QTextEngine::elidedText(), getGlyphBearings(), glyphIndex(), and stringToCMap().

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◆ ensureFallbackFamiliesQueried()

void QFontEngineMulti::ensureFallbackFamiliesQueried ( )

protectedvirtual

Definition at line 1728 of file qfontengine.cpp.

References QFont::AnyStyle, QFontDef::families, QFontDef::fixedPitch, QFontEngine::fontDef, qt_fallbacksForFamily(), setFallbackFamiliesList(), QFontDef::style, QFontDef::styleHint, and QFont::TypeWriter.

Referenced by ensureEngineAt(), glyphIndex(), and stringToCMap().

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◆ fallbackFamilyAt()

QString QFontEngineMulti::fallbackFamilyAt ( int at ) const

inline

Definition at line 474 of file qfontengine_p.h.

References QString::at(), and at.

Referenced by loadEngine().

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◆ fallbackFamilyCount()

int QFontEngineMulti::fallbackFamilyCount ( ) const

inline

Definition at line 473 of file qfontengine_p.h.

◆ getGlyphBearings()

void QFontEngineMulti::getGlyphBearings	(	glyph_t	glyph,
		qreal *	leftBearing = nullptr,
		qreal *	rightBearing = nullptr )

overridevirtual

Reimplemented from QFontEngine.

Definition at line 2056 of file qfontengine.cpp.

References engine, ensureEngineAt(), highByte(), and stripped().

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◆ glyphIndex()

glyph_t QFontEngineMulti::glyphIndex ( uint ucs4 ) const

overridevirtual

Implements QFontEngine.

Definition at line 1794 of file qfontengine.cpp.

References QList< T >::at(), QFontEngine::Box, engine, ensureEngineAt(), ensureFallbackFamiliesQueried(), QFontEngine::isIgnorableChar(), Q_ASSERT, qMin(), shouldLoadFontEngineForCharacter(), and QList< T >::size().

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◆ highByte()

uchar QFontEngineMulti::highByte ( glyph_t glyph )

static

Definition at line 1688 of file qfontengine.cpp.

Referenced by addOutlineToPath(), alphaMapForGlyph(), alphaMapForGlyph(), alphaMapForGlyph(), alphaMapForGlyph(), alphaRGBMapForGlyph(), boundingBox(), boundingBox(), doKerning(), getGlyphBearings(), QCoreTextFontEngine::recalcAdvances(), and recalcAdvances().

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◆ leading()

QFixed QFontEngineMulti::leading ( ) const

overridevirtual

Reimplemented from QFontEngine.

Definition at line 2223 of file qfontengine.cpp.

References engine.

◆ lineThickness()

QFixed QFontEngineMulti::lineThickness ( ) const

overridevirtual

Reimplemented from QFontEngine.

Definition at line 2238 of file qfontengine.cpp.

References engine.

◆ loadEngine()

QFontEngine * QFontEngineMulti::loadEngine ( int at )

protectedvirtual

Definition at line 1773 of file qfontengine.cpp.

References at, engine, fallbackFamilyAt(), QFontDatabasePrivate::findFont(), QFontEngine::fontDef, QFont::NoFontMerging, request, and QFont::StyleNormal.

Referenced by ensureEngineAt().

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◆ maxCharWidth()

qreal QFontEngineMulti::maxCharWidth ( ) const

overridevirtual

Implements QFontEngine.

Definition at line 2248 of file qfontengine.cpp.

References engine.

◆ minLeftBearing()

qreal QFontEngineMulti::minLeftBearing ( ) const

overridevirtual

Reimplemented from QFontEngine.

Definition at line 2253 of file qfontengine.cpp.

References engine.

◆ minRightBearing()

qreal QFontEngineMulti::minRightBearing ( ) const

overridevirtual

Reimplemented from QFontEngine.

Definition at line 2258 of file qfontengine.cpp.

References engine.

◆ recalcAdvances()

void QFontEngineMulti::recalcAdvances	(	QGlyphLayout *	,
		ShaperFlags	) const

overridevirtual

Reimplemented from QFontEngine.

Definition at line 2122 of file qfontengine.cpp.

References engine, QGlyphLayout::glyphs, highByte(), i, QGlyphLayout::mid(), QGlyphLayout::numGlyphs, and stripped().

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◆ setFallbackFamiliesList()

void QFontEngineMulti::setFallbackFamiliesList ( const QStringList & fallbackFamilies )

Definition at line 1739 of file qfontengine.cpp.

References QList< T >::at(), engine, QFontDef::families, QFontEngine::fontDef, Q_ASSERT, QList< T >::resize(), and QList< T >::size().

Referenced by ensureFallbackFamiliesQueried().

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◆ shouldLoadFontEngineForCharacter()

bool QFontEngineMulti::shouldLoadFontEngineForCharacter	(	int	at,
		uint	ucs4 ) const

protectedvirtual

Reimplemented in QFontEngineMultiFontConfig.

Definition at line 1986 of file qfontengine.cpp.

References at, and Q_UNUSED.

Referenced by glyphIndex(), and stringToCMap().

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◆ stringToCMap()

int QFontEngineMulti::stringToCMap	(	const QChar *	str,
		int	len,
		QGlyphLayout *	glyphs,
		int *	nglyphs,
		ShaperFlags	flags ) const

overridevirtual

Implements QFontEngine.

Definition at line 1824 of file qfontengine.cpp.

References QList< T >::at(), QFontEngine::Box, QFont::ContextFontMerging, QGlyphLayout::copy(), engine, ensureEngineAt(), ensureFallbackFamiliesQueried(), QFontEngine::fontDef, QFontEngine::GlyphIndicesOnly, QGlyphLayout::glyphs, QFontEngine::isColorFont(), QFontEngine::isIgnorableChar(), it, QGlyphLayout::mid(), QGlyphLayout::numGlyphs, Q_ASSERT, qMin(), shouldLoadFontEngineForCharacter(), QList< T >::size(), str, and QFontDef::styleStrategy.

Referenced by canRender().

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◆ underlinePosition()

QFixed QFontEngineMulti::underlinePosition ( ) const

overridevirtual

Reimplemented from QFontEngine.

Definition at line 2243 of file qfontengine.cpp.

References engine.

◆ xHeight()

QFixed QFontEngineMulti::xHeight ( ) const

overridevirtual

Reimplemented from QFontEngine.

Definition at line 2228 of file qfontengine.cpp.

References engine.

The documentation for this class was generated from the following files:

qtbase/src/gui/text/qfontengine_p.h (1593b1f6d610ce9bdb9dff4104f7f447e03a9585)
qtbase/src/gui/text/qfontengine.cpp (1593b1f6d610ce9bdb9dff4104f7f447e03a9585)

Public Member Functions

Static Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QFontEngineMulti()

◆ ~QFontEngineMulti()

Member Function Documentation

◆ addOutlineToPath()

◆ alphaMapForGlyph() [1/4]

◆ alphaMapForGlyph() [2/4]

◆ alphaMapForGlyph() [3/4]

◆ alphaMapForGlyph() [4/4]

◆ alphaRGBMapForGlyph()

◆ ascent()

◆ averageCharWidth()

◆ boundingBox() [1/2]

◆ boundingBox() [2/2]

◆ canRender()

◆ capHeight()

◆ createMultiFontEngine()

◆ descent()

◆ doKerning()

◆ engine()

◆ ensureEngineAt()

◆ ensureFallbackFamiliesQueried()

◆ fallbackFamilyAt()

◆ fallbackFamilyCount()

◆ getGlyphBearings()

◆ glyphIndex()

◆ highByte()

◆ leading()

◆ lineThickness()

◆ loadEngine()

◆ maxCharWidth()

◆ minLeftBearing()

◆ minRightBearing()

◆ recalcAdvances()

◆ setFallbackFamiliesList()

◆ shouldLoadFontEngineForCharacter()

◆ stringToCMap()

◆ underlinePosition()

◆ xHeight()