#include <qfontengine_p.h>

Inheritance diagram for QFontEngine:

Collaboration diagram for QFontEngine:

Classes
struct	FaceData

struct	FaceId

struct	Glyph

class	Holder

struct	KernPair

struct	Properties

Public Types
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 Member Functions
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	preferTypoLineMetrics () const

bool	isColorFont () const

virtual QFixed	emSquareSize () const

virtual glyph_t	glyphIndex (uint ucs4) const =0

virtual int	stringToCMap (const QChar str, int len, QGlyphLayout glyphs, int *nglyphs, ShaperFlags flags) const =0

virtual void	recalcAdvances (QGlyphLayout *, ShaperFlags) const

virtual void	doKerning (QGlyphLayout *, ShaperFlags) 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)

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

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

virtual QImage	alphaMapForGlyph (glyph_t)

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

virtual QImage	alphaMapForGlyph (glyph_t, const QTransform &t)

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

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

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

QImage	renderedPathForGlyph (glyph_t glyph, const QColor &color)

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 (const QGlyphLayout &glyphs)

virtual glyph_metrics_t	boundingBox (glyph_t glyph)=0

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

glyph_metrics_t	tightBoundingBox (const QGlyphLayout &glyphs)

virtual QFixed	ascent () const

virtual QFixed	capHeight () const =0

virtual QFixed	descent () const

virtual QFixed	leading () const

virtual QFixed	xHeight () const

virtual QFixed	averageCharWidth () const

virtual QFixed	lineThickness () const

virtual QFixed	underlinePosition () const

virtual qreal	maxCharWidth () const =0

virtual qreal	minLeftBearing () const

virtual qreal	minRightBearing () const

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

bool	canRender (uint ucs4) const

virtual bool	canRender (const QChar *str, int len) 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

virtual QList< QFontVariableAxis >	variableAxes () const

virtual QString	glyphName (glyph_t index) const

virtual glyph_t	findGlyph (QLatin1StringView name) 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 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)

static bool	disableEmojiSegmenter ()

Public Attributes
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 Member Functions
	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

Protected Attributes
QFixed	m_ascent

QFixed	m_descent

QFixed	m_leading

bool	m_heightMetricsQueried

Detailed Description

Definition at line 47 of file qfontengine_p.h.

Member Enumeration Documentation

◆ GlyphFormat

enum QFontEngine::GlyphFormat

Enumerator
Format_None
Format_Render
Format_Mono
Format_A8
Format_A32
Format_ARGB

Definition at line 71 of file qfontengine_p.h.

◆ HintStyle

enum QFontEngine::HintStyle

Enumerator
HintNone
HintLight
HintMedium
HintFull

Definition at line 268 of file qfontengine_p.h.

◆ ShaperFlag

enum QFontEngine::ShaperFlag

Enumerator
DesignMetrics
GlyphIndicesOnly
FullStringFallback

Definition at line 80 of file qfontengine_p.h.

◆ SubpixelAntialiasingType

enum QFontEngine::SubpixelAntialiasingType

Enumerator
Subpixel_None
Subpixel_RGB
Subpixel_BGR
Subpixel_VRGB
Subpixel_VBGR

Definition at line 276 of file qfontengine_p.h.

◆ SynthesizedFlags

enum QFontEngine::SynthesizedFlags

Enumerator
SynthesizedItalic
SynthesizedBold
SynthesizedStretch

Definition at line 136 of file qfontengine_p.h.

◆ Type

enum QFontEngine::Type

Enumerator
Box
Multi
Win
Mac
Freetype
QPF1
QPF2
Proxy
DirectWrite
TestFontEngine

Definition at line 50 of file qfontengine_p.h.

Constructor & Destructor Documentation

◆ ~QFontEngine()

QFontEngine::~QFontEngine ( )

virtual

Definition at line 130 of file qfontengine.cpp.

◆ QFontEngine()

QFontEngine::QFontEngine ( Type type )

explicitprotected

Definition at line 105 of file qfontengine.cpp.

Member Function Documentation

◆ addBitmapFontToPath()

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

Definition at line 740 of file qfontengine.cpp.

◆ addGlyphsToPath()

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

virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 789 of file qfontengine.cpp.

◆ addOutlineToPath()

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

virtual

Reimplemented in QFontEngineBox, QFontEngineFT, QFontEngineMulti, and QWindowsFontEngine.

Definition at line 633 of file qfontengine.cpp.

◆ alphaMapBoundingBox()

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

inlinevirtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 197 of file qfontengine_p.h.

◆ alphaMapForGlyph() [1/4]

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

virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QFontEngineMulti, and QWindowsFontEngineDirectWrite.

Definition at line 806 of file qfontengine.cpp.

◆ alphaMapForGlyph() [2/4]

QImage QFontEngine::alphaMapForGlyph ( glyph_t glyph )

virtual

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 in QFontEngineBox, QFontEngineFT, QFontEngineMulti, and QWindowsFontEngine.

Definition at line 1001 of file qfontengine.cpp.

◆ alphaMapForGlyph() [3/4]

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

virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QFontEngineMulti, and QWindowsFontEngineDirectWrite.

Definition at line 822 of file qfontengine.cpp.

◆ alphaMapForGlyph() [4/4]

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

virtual

Reimplemented in QFontEngineMulti, and QWindowsFontEngine.

Definition at line 812 of file qfontengine.cpp.

◆ alphaRGBMapForGlyph()

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

virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 835 of file qfontengine.cpp.

◆ ascent()

QFixed QFontEngine::ascent ( ) const

virtual

Reimplemented in QFontEngineBox, and QFontEngineMulti.

Definition at line 498 of file qfontengine.cpp.

◆ averageCharWidth()

QFixed QFontEngine::averageCharWidth ( ) const

virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QFontEngineMulti, and QWindowsFontEngine.

Definition at line 245 of file qfontengine.cpp.

◆ bitmapForGlyph()

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

virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, and QWindowsFontEngineDirectWrite.

Definition at line 852 of file qfontengine.cpp.

◆ boundingBox() [1/3]

glyph_metrics_t QFontEngine::boundingBox ( const QGlyphLayout & glyphs )

virtual

Reimplemented in QFontEngineBox, QFontEngineFT, QFontEngineMulti, and QWindowsFontEngineDirectWrite.

Definition at line 596 of file qfontengine.cpp.

◆ boundingBox() [2/3]

virtual glyph_metrics_t QFontEngine::boundingBox ( glyph_t glyph )

pure virtual

Implemented in QCoreTextFontEngine, QFontEngineBox, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

◆ boundingBox() [3/3]

glyph_metrics_t QFontEngine::boundingBox	(	glyph_t	glyph,
		const QTransform &	matrix )

virtual

Reimplemented in QFontEngineFT, and QWindowsFontEngine.

Definition at line 221 of file qfontengine.cpp.

◆ calculatedCapHeight()

QFixed QFontEngine::calculatedCapHeight ( ) const

protected

Definition at line 231 of file qfontengine.cpp.

◆ canRender() [1/2]

bool QFontEngine::canRender	(	const QChar *	str,
		int	len ) const

virtual

Reimplemented in QCoreTextFontEngine, QFontEngineBox, and QFontEngineMulti.

Definition at line 210 of file qfontengine.cpp.

◆ canRender() [2/2]

bool QFontEngine::canRender ( uint ucs4 ) const

inline

Definition at line 225 of file qfontengine_p.h.

◆ capHeight()

virtual QFixed QFontEngine::capHeight ( ) const

pure virtual

Implemented in QCoreTextFontEngine, QFontEngineBox, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

◆ clearGlyphCache()

void QFontEngine::clearGlyphCache ( const void * key )

Definition at line 1077 of file qfontengine.cpp.

◆ cloneWithSize()

virtual QFontEngine * QFontEngine::cloneWithSize ( qreal ) const

inlinevirtual

Reimplemented in QCoreTextFontEngine, QCoreTextRawFontEngine, QCoreTextRawFontEngine, QFontEngineBox, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 233 of file qfontengine_p.h.

◆ convertToPostscriptFontFamilyName()

QByteArray QFontEngine::convertToPostscriptFontFamilyName ( const QByteArray & fontFamily )

static

Definition at line 1563 of file qfontengine.cpp.

◆ descent()

QFixed QFontEngine::descent ( ) const

virtual

Reimplemented in QFontEngineBox, and QFontEngineMulti.

Definition at line 506 of file qfontengine.cpp.

◆ disableEmojiSegmenter()

bool QFontEngine::disableEmojiSegmenter ( )

static

Definition at line 1635 of file qfontengine.cpp.

◆ doKerning()

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

virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, and QFontEngineMulti.

Definition at line 1143 of file qfontengine.cpp.

◆ emSquareSize()

virtual QFixed QFontEngine::emSquareSize ( ) const

inlinevirtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 166 of file qfontengine_p.h.

◆ expectsGammaCorrectedBlending()

bool QFontEngine::expectsGammaCorrectedBlending ( ) const

virtual

Reimplemented in QCoreTextFontEngine, and QFontEngineFT.

Definition at line 257 of file qfontengine.cpp.

◆ faceId()

virtual FaceId QFontEngine::faceId ( ) const

inlinevirtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 135 of file qfontengine_p.h.

◆ findGlyph()

glyph_t QFontEngine::findGlyph ( QLatin1StringView name ) const

virtual

Reimplemented in QCoreTextFontEngine, and QFontEngineMulti.

Definition at line 930 of file qfontengine.cpp.

◆ firstLeftBearing()

QFixed QFontEngine::firstLeftBearing ( const QGlyphLayout & glyphs )

protected

Definition at line 1589 of file qfontengine.cpp.

◆ getCMap()

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

static

Definition at line 1270 of file qfontengine.cpp.

◆ getGlyphBearings()

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

virtual

Reimplemented in QFontEngineMulti, and QWindowsFontEngine.

Definition at line 380 of file qfontengine.cpp.

◆ getGlyphPositions()

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

Definition at line 262 of file qfontengine.cpp.

◆ getPointInOutline()

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

virtual

Reimplemented in QFontEngineFT.

Definition at line 62 of file qfontengine.cpp.

◆ getSfntTable()

QByteArray QFontEngine::getSfntTable ( uint tag ) const

Definition at line 1065 of file qfontengine.cpp.

◆ getSfntTableData()

bool QFontEngine::getSfntTableData	(	uint	tag,
		uchar *	buffer,
		uint *	length ) const

virtual

Returns true if the font table idetified by tag exists in the font; returns false otherwise.

If buffer is \nullptr, stores the size of the buffer required for the font table data, in bytes, in length. If buffer is not \nullptr and the capacity of the buffer, passed in length, is sufficient to store the font table data, also copies the font table data to buffer.

Note: returning false when the font table exists could lead to an undefined behavior.

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 1057 of file qfontengine.cpp.

◆ getTrueTypeGlyphIndex()

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

static

Definition at line 1428 of file qfontengine.cpp.

◆ getUnscaledGlyph()

void QFontEngine::getUnscaledGlyph	(	glyph_t	glyph,
		QPainterPath *	path,
		glyph_metrics_t *	metrics )

virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 1037 of file qfontengine.cpp.

◆ glyphCache()

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

Definition at line 1103 of file qfontengine.cpp.

◆ glyphCount()

int QFontEngine::glyphCount ( ) const

virtual

Reimplemented in QFontEngineFT.

Definition at line 1251 of file qfontengine.cpp.

◆ glyphData()

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

virtual

Reimplemented in QFontEngineFT.

Definition at line 879 of file qfontengine.cpp.

◆ glyphIndex()

virtual glyph_t QFontEngine::glyphIndex ( uint ucs4 ) const

pure virtual

Implemented in QCoreTextFontEngine, QFontEngineBox, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

◆ glyphMargin()

virtual int QFontEngine::glyphMargin ( GlyphFormat format )

inlinevirtual

Reimplemented in QCoreTextFontEngine, and QFontEngineFT.

Definition at line 231 of file qfontengine_p.h.

◆ glyphName()

QString QFontEngine::glyphName ( glyph_t index ) const

virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, and QFontEngineMulti.

Definition at line 907 of file qfontengine.cpp.

◆ handle()

Qt::HANDLE QFontEngine::handle ( ) const

virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 1265 of file qfontengine.cpp.

◆ harfbuzzFace()

void * QFontEngine::harfbuzzFace ( ) const

Definition at line 166 of file qfontengine.cpp.

◆ harfbuzzFont()

void * QFontEngine::harfbuzzFont ( ) const

Definition at line 156 of file qfontengine.cpp.

◆ hasInternalCaching()

virtual bool QFontEngine::hasInternalCaching ( ) const

inlinevirtual

Reimplemented in QFontEngineFT.

Definition at line 195 of file qfontengine_p.h.

◆ hasUnreliableGlyphOutline()

bool QFontEngine::hasUnreliableGlyphOutline ( ) const

virtual

Reimplemented in QWindowsFontEngine.

Definition at line 1583 of file qfontengine.cpp.

◆ initializeHeightMetrics()

void QFontEngine::initializeHeightMetrics ( ) const

protectedvirtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 418 of file qfontengine.cpp.

◆ isColorFont()

bool QFontEngine::isColorFont ( ) const

inline

Definition at line 155 of file qfontengine_p.h.

◆ isIgnorableChar()

static bool QFontEngine::isIgnorableChar ( char32_t ucs4 )

inlinestatic

Definition at line 156 of file qfontengine_p.h.

◆ lastRightBearing()

QFixed QFontEngine::lastRightBearing ( const QGlyphLayout & glyphs )

protected

Definition at line 1600 of file qfontengine.cpp.

◆ leading()

QFixed QFontEngine::leading ( ) const

virtual

Reimplemented in QFontEngineBox, and QFontEngineMulti.

Definition at line 490 of file qfontengine.cpp.

◆ lineThickness()

QFixed QFontEngine::lineThickness ( ) const

virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 138 of file qfontengine.cpp.

◆ loadKerningPairs()

void QFontEngine::loadKerningPairs ( QFixed scalingFactor )

Definition at line 1160 of file qfontengine.cpp.

◆ maxCharWidth()

virtual qreal QFontEngine::maxCharWidth ( ) const

pure virtual

Implemented in QCoreTextFontEngine, QFontEngineBox, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

◆ minLeftBearing()

qreal QFontEngine::minLeftBearing ( ) const

virtual

Reimplemented in QFontEngineBox, QFontEngineMulti, and QWindowsFontEngine.

Definition at line 514 of file qfontengine.cpp.

◆ minRightBearing()

qreal QFontEngine::minRightBearing ( ) const

virtual

Reimplemented in QFontEngineBox, QFontEngineMulti, and QWindowsFontEngine.

Definition at line 527 of file qfontengine.cpp.

◆ preferTypoLineMetrics()

bool QFontEngine::preferTypoLineMetrics ( ) const

Definition at line 441 of file qfontengine.cpp.

◆ processHheaTable()

bool QFontEngine::processHheaTable ( ) const

protected

Definition at line 389 of file qfontengine.cpp.

◆ processOS2Table()

bool QFontEngine::processOS2Table ( ) const

protected

Definition at line 446 of file qfontengine.cpp.

◆ properties()

QFontEngine::Properties QFontEngine::properties ( ) const

virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 1020 of file qfontengine.cpp.

◆ recalcAdvances()

virtual void QFontEngine::recalcAdvances	(	QGlyphLayout *	,
		ShaperFlags	) const

inlinevirtual

Reimplemented in QCoreTextFontEngine, QFontEngineBox, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 171 of file qfontengine_p.h.

◆ removeGlyphFromCache()

void QFontEngine::removeGlyphFromCache ( glyph_t )

virtual

Reimplemented in QFontEngineFT.

Definition at line 1016 of file qfontengine.cpp.

◆ renderedPathForGlyph()

QImage QFontEngine::renderedPathForGlyph	(	glyph_t	glyph,
		const QColor &	color )

Definition at line 973 of file qfontengine.cpp.

◆ scriptRequiresOpenType()

static bool QFontEngine::scriptRequiresOpenType ( QChar::Script script )

inlinestatic

Definition at line 246 of file qfontengine_p.h.

◆ setDefaultHintStyle()

virtual void QFontEngine::setDefaultHintStyle ( HintStyle )

inlinevirtual

Reimplemented in QFontEngineFT.

Definition at line 274 of file qfontengine_p.h.

◆ setGlyphCache()

void QFontEngine::setGlyphCache	(	const void *	key,
		QFontEngineGlyphCache *	data )

Definition at line 1082 of file qfontengine.cpp.

◆ stringToCMap()

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

pure virtual

Implemented in QCoreTextFontEngine, QFontEngineBox, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

◆ subPixelPositionFor()

QFixedPoint QFontEngine::subPixelPositionFor ( const QFixedPoint & position ) const

virtual

Definition at line 859 of file qfontengine.cpp.

◆ subPixelPositionForX()

QFixed QFontEngine::subPixelPositionForX ( QFixed x ) const

inline

Definition at line 149 of file qfontengine_p.h.

◆ supportsHorizontalSubPixelPositions()

virtual bool QFontEngine::supportsHorizontalSubPixelPositions ( ) const

inlinevirtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, and QWindowsFontEngineDirectWrite.

Definition at line 146 of file qfontengine_p.h.

◆ supportsScript()

bool QFontEngine::supportsScript ( QChar::Script script ) const

Definition at line 176 of file qfontengine.cpp.

◆ supportsSubPixelPositions()

bool QFontEngine::supportsSubPixelPositions ( ) const

inline

Definition at line 142 of file qfontengine_p.h.

◆ supportsTransformation()

bool QFontEngine::supportsTransformation ( const QTransform & transform ) const

virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, and QWindowsFontEngine.

Definition at line 252 of file qfontengine.cpp.

◆ supportsVerticalSubPixelPositions()

virtual bool QFontEngine::supportsVerticalSubPixelPositions ( ) const

inlinevirtual

Reimplemented in QCoreTextFontEngine, and QFontEngineFT.

Definition at line 147 of file qfontengine_p.h.

◆ synthesized()

virtual int QFontEngine::synthesized ( ) const

inlinevirtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, and QWindowsFontEngine.

Definition at line 141 of file qfontengine_p.h.

◆ tightBoundingBox()

glyph_metrics_t QFontEngine::tightBoundingBox ( const QGlyphLayout & glyphs )

Definition at line 606 of file qfontengine.cpp.

◆ type()

Type QFontEngine::type ( ) const

inline

Definition at line 105 of file qfontengine_p.h.

◆ underlinePosition()

QFixed QFontEngine::underlinePosition ( ) const

virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QFontEngineMulti, and QWindowsFontEngineDirectWrite.

Definition at line 151 of file qfontengine.cpp.

◆ variableAxes()

QList< QFontVariableAxis > QFontEngine::variableAxes ( ) const

virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QFontEngineMulti, and QWindowsFontEngineDirectWrite.

Definition at line 1611 of file qfontengine.cpp.

◆ xHeight()

QFixed QFontEngine::xHeight ( ) const

virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 238 of file qfontengine.cpp.

Member Data Documentation

◆ cache_cost

uint QFontEngine::cache_cost

Definition at line 332 of file qfontengine_p.h.

◆ face_

Holder QFontEngine::face_

mutable

Definition at line 325 of file qfontengine_p.h.

◆ faceData

struct QFontEngine::FaceData QFontEngine::faceData

◆ font_

Holder QFontEngine::font_

mutable

Definition at line 324 of file qfontengine_p.h.

◆ fontDef

QFontDef QFontEngine::fontDef

Definition at line 289 of file qfontengine_p.h.

◆ fsType

uint QFontEngine::fsType

Definition at line 333 of file qfontengine_p.h.

◆ glyphFormat

GlyphFormat QFontEngine::glyphFormat

Definition at line 348 of file qfontengine_p.h.

◆ isSmoothlyScalable

bool QFontEngine::isSmoothlyScalable

Definition at line 335 of file qfontengine_p.h.

◆ kerning_pairs

QList<KernPair> QFontEngine::kerning_pairs

Definition at line 345 of file qfontengine_p.h.

◆ m_ascent

QFixed QFontEngine::m_ascent

mutableprotected

Definition at line 359 of file qfontengine_p.h.

◆ m_descent

QFixed QFontEngine::m_descent

mutableprotected

Definition at line 360 of file qfontengine_p.h.

◆ m_heightMetricsQueried

bool QFontEngine::m_heightMetricsQueried

mutableprotected

Definition at line 362 of file qfontengine_p.h.

◆ m_leading

QFixed QFontEngine::m_leading

mutableprotected

Definition at line 361 of file qfontengine_p.h.

◆ m_subPixelPositionCount

int QFontEngine::m_subPixelPositionCount

Definition at line 349 of file qfontengine_p.h.

◆ ref

QAtomicInt QFontEngine::ref

Definition at line 288 of file qfontengine_p.h.

◆ symbol

bool QFontEngine::symbol

Definition at line 334 of file qfontengine_p.h.

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

qtbase/src/gui/text/qfontengine_p.h (cf674f38450f623d94e5695a221a186c0e551e27)
qtbase/src/gui/text/qfontengine.cpp (511ee39570a104d07eb4c9fb0d8a8fb775e9b38a)

Classes

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Detailed Description

Member Enumeration Documentation

◆ GlyphFormat

◆ HintStyle

◆ ShaperFlag

◆ SubpixelAntialiasingType

◆ SynthesizedFlags

◆ Type

Constructor & Destructor Documentation

◆ ~QFontEngine()

◆ QFontEngine()

Member Function Documentation

◆ addBitmapFontToPath()

◆ addGlyphsToPath()

◆ addOutlineToPath()

◆ alphaMapBoundingBox()

◆ alphaMapForGlyph() [1/4]

◆ alphaMapForGlyph() [2/4]

◆ alphaMapForGlyph() [3/4]

◆ alphaMapForGlyph() [4/4]

◆ alphaRGBMapForGlyph()

◆ ascent()

◆ averageCharWidth()

◆ bitmapForGlyph()

◆ boundingBox() [1/3]

◆ boundingBox() [2/3]

◆ boundingBox() [3/3]

◆ calculatedCapHeight()

◆ canRender() [1/2]

◆ canRender() [2/2]

◆ capHeight()

◆ clearGlyphCache()

◆ cloneWithSize()

◆ convertToPostscriptFontFamilyName()

◆ descent()

◆ disableEmojiSegmenter()

◆ doKerning()

◆ emSquareSize()

◆ expectsGammaCorrectedBlending()

◆ faceId()

◆ findGlyph()

◆ firstLeftBearing()

◆ getCMap()

◆ getGlyphBearings()

◆ getGlyphPositions()

◆ getPointInOutline()

◆ getSfntTable()

◆ getSfntTableData()

◆ getTrueTypeGlyphIndex()

◆ getUnscaledGlyph()

◆ glyphCache()

◆ glyphCount()

◆ glyphData()

◆ glyphIndex()

◆ glyphMargin()

◆ glyphName()

◆ handle()

◆ harfbuzzFace()

◆ harfbuzzFont()

◆ hasInternalCaching()

◆ hasUnreliableGlyphOutline()

◆ initializeHeightMetrics()

◆ isColorFont()

◆ isIgnorableChar()

◆ lastRightBearing()

◆ leading()

◆ lineThickness()

◆ loadKerningPairs()

◆ maxCharWidth()

◆ minLeftBearing()

◆ minRightBearing()

◆ preferTypoLineMetrics()

◆ processHheaTable()