#include <qfontengine_p.h>

Inheritance diagram for QFontEngineMulti:

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

virtual QImage	alphaMapForGlyph (glyph_t)

virtual QFixed	ascent () const

virtual QFixed	averageCharWidth () const

virtual glyph_metrics_t	boundingBox (const QGlyphLayout &glyphs)

virtual glyph_metrics_t	boundingBox (glyph_t glyph)

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

virtual QFixed	descent () const

virtual void	doKerning (QGlyphLayout *, QTextEngine::ShaperFlags) const

QFontEngine *	engine (int at) const

virtual void	getGlyphBearings (glyph_t glyph, qreal leftBearing=0, qreal rightBearing=0)

virtual QFixed	leading () const

virtual QFixed	lineThickness () const

virtual qreal	maxCharWidth () const

virtual qreal	minLeftBearing () const

virtual qreal	minRightBearing () const

virtual const char *	name () const

	QFontEngineMulti (int engineCount)

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

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

virtual Type	type () const

virtual QFixed	underlinePosition () const

virtual QFixed	xHeight () const

	~QFontEngineMulti ()

Public Functions inherited from QFontEngine
void	addBitmapFontToPath (qreal x, qreal y, const QGlyphLayout &, QPainterPath *, QTextItem::RenderFlags)

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

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

virtual QImage	alphaMapForGlyph (glyph_t glyph, QFixed subPixelPosition)

virtual QImage	alphaMapForGlyph (glyph_t, const QTransform &t)

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

virtual QImage	alphaRGBMapForGlyph (glyph_t, QFixed subPixelPosition, int margin, const QTransform &t)

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

virtual QFontEngine *	cloneWithSize (qreal) const

virtual QFixed	emSquareSize () const

virtual FaceId	faceId () const

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

virtual HB_Error	getPointInOutline (HB_Glyph glyph, int flags, hb_uint32 point, HB_Fixed xpos, HB_Fixed ypos, hb_uint32 *nPoints)

QByteArray	getSfntTable (uint) const

virtual bool	getSfntTableData (uint, uchar , uint ) const

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

QFontEngineGlyphCache *	glyphCache (void *key, QFontEngineGlyphCache::Type type, const QTransform &transform) const

virtual int	glyphCount () const

HB_Face	harfbuzzFace () const

HB_Font	harfbuzzFont () const

void	loadKerningPairs (QFixed scalingFactor)

virtual Properties	properties () const

	QFontEngine ()

virtual void	removeGlyphFromCache (glyph_t)

void	setGlyphCache (void key, QFontEngineGlyphCache data)

virtual bool	supportsSubPixelPositions () const

virtual int	synthesized () const

glyph_metrics_t	tightBoundingBox (const QGlyphLayout &glyphs)

virtual	~QFontEngine ()

Public Functions inherited from QObject
bool	blockSignals (bool b)
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it). More...

const QObjectList &	children () const
	Returns a list of child objects. More...

bool	connect (const QObject sender, const char signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const

bool	disconnect (const char signal=0, const QObject receiver=0, const char *member=0)

bool	disconnect (const QObject receiver, const char member=0)

void	dumpObjectInfo ()
	Dumps information about signal connections, etc. More...

void	dumpObjectTree ()
	Dumps a tree of children to the debug output. More...

QList< QByteArray >	dynamicPropertyNames () const
	Returns the names of all properties that were dynamically added to the object using setProperty(). More...

virtual bool	event (QEvent *)
	This virtual function receives events to an object and should return true if the event e was recognized and processed. More...

virtual bool	eventFilter (QObject , QEvent )
	Filters events if this object has been installed as an event filter for the watched object. More...

template<typename T >
T	findChild (const QString &aName=QString()) const
	Returns the child of this object that can be cast into type T and that is called name, or 0 if there is no such object. More...

template<typename T >
QList< T >	findChildren (const QString &aName=QString()) const
	Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects. More...

template<typename T >
QList< T >	findChildren (const QRegExp &re) const

bool	inherits (const char *classname) const
	Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false. More...

void	installEventFilter (QObject *)
	Installs an event filter filterObj on this object. More...

bool	isWidgetType () const
	Returns true if the object is a widget; otherwise returns false. More...

void	killTimer (int id)
	Kills the timer with timer identifier, id. More...

virtual const QMetaObject *	metaObject () const
	Returns a pointer to the meta-object of this object. More...

void	moveToThread (QThread *thread)
	Changes the thread affinity for this object and its children. More...

QString	objectName () const

QObject *	parent () const
	Returns a pointer to the parent object. More...

QVariant	property (const char *name) const
	Returns the value of the object's name property. More...

Q_INVOKABLE	QObject (QObject *parent=0)
	Constructs an object with parent object parent. More...

void	removeEventFilter (QObject *)
	Removes an event filter object obj from this object. More...

void	setObjectName (const QString &name)

void	setParent (QObject *)
	Makes the object a child of parent. More...

bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value. More...

void	setUserData (uint id, QObjectUserData *data)

bool	signalsBlocked () const
	Returns true if signals are blocked; otherwise returns false. More...

int	startTimer (int interval)
	Starts a timer and returns a timer identifier, or returns zero if it could not start a timer. More...

QThread *	thread () const
	Returns the thread in which the object lives. More...

QObjectUserData *	userData (uint id) const

virtual	~QObject ()
	Destroys the object, deleting all its child objects. More...

Protected Functions
virtual void	loadEngine (int at)=0

Protected Functions inherited from QFontEngine
QFixed	lastRightBearing (const QGlyphLayout &glyphs, bool round=false)

Protected Functions inherited from QObject
virtual void	childEvent (QChildEvent *)
	This event handler can be reimplemented in a subclass to receive child events. More...

virtual void	connectNotify (const char *signal)
	This virtual function is called when something has been connected to signal in this object. More...

virtual void	customEvent (QEvent *)
	This event handler can be reimplemented in a subclass to receive custom events. More...

virtual void	disconnectNotify (const char *signal)
	This virtual function is called when something has been disconnected from signal in this object. More...

	QObject (QObjectPrivate &dd, QObject *parent=0)

int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal. More...

QObject *	sender () const
	Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns 0. More...

int	senderSignalIndex () const

virtual void	timerEvent (QTimerEvent *)
	This event handler can be reimplemented in a subclass to receive timer events for the object. More...

Protected Variables
QVector< QFontEngine * >	engines

Protected Variables inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Friends
class	QPSPrintEngineFontMulti

class	QPSPrintEnginePrivate

class	QRawFont

Additional Inherited Members
Public Types inherited from QFontEngine
enum	GlyphFormat { Format_None, Format_Render = Format_None, Format_Mono, Format_A8, Format_A32 }

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

enum	Type { Box, Multi, XLFD, Win, Mac, Freetype, QPF1, QPF2, Proxy, S60FontEngine, DirectWrite, TestFontEngine = 0x1000 }

Public Slots inherited from QObject
void	deleteLater ()
	Schedules this object for deletion. More...

Signals inherited from QObject
void	destroyed (QObject *=0)
	This signal is emitted immediately before the object obj is destroyed, and can not be blocked. More...

Static Public Functions inherited from QFontEngine
static QByteArray	convertToPostscriptFontFamilyName (const QByteArray &fontFamily)

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

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

Static Public Functions inherited from QObject
static bool	connect (const QObject sender, const char signal, const QObject receiver, const char member, Qt::ConnectionType=Qt::AutoConnection)
	Creates a connection of the given type from the signal in the sender object to the method in the receiver object. More...

static bool	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)

static bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char member)
	Disconnects signal in object sender from method in object receiver. More...

static bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &member)

static uint	registerUserData ()

static QString	tr (const char sourceText, const char comment=0, int n=-1)

static QString	trUtf8 (const char sourceText, const char comment=0, int n=-1)

Public Variables inherited from QFontEngine
uint	cache_cost

int	cache_count

QFontDef	fontDef

uint	fsType: 16

int	glyphFormat

HB_Face	hbFace

HB_FontRec	hbFont

QVector< KernPair >	kerning_pairs

QAtomicInt	ref

bool	symbol

Static Public Variables inherited from QObject
static const QMetaObject	staticMetaObject
	This variable stores the meta-object for the class. More...

Static Protected Functions inherited from QFontEngine
static const QVector< QRgb > &	grayPalette ()

Static Protected Variables inherited from QObject
static const QMetaObject	staticQtMetaObject

Related Functions inherited from QObject
T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()

QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QRegExp &regExp)()

T *	qobject_cast (QObject *object)

	QObjectList

void *	qt_find_obj_child (QObject parent, const char type, const QString &name)
	Returns a pointer to the object named name that inherits type and with a given parent. More...

Detailed Description

Definition at line 389 of file qfontengine_p.h.

Constructors and Destructors

◆ QFontEngineMulti()

QFontEngineMulti::QFontEngineMulti ( int engineCount )

explicit

Definition at line 1318 of file qfontengine.cpp.

 {
     engines.fill(0, engineCount);
     cache_cost = 0;
 }

◆ ~QFontEngineMulti()

QFontEngineMulti::~QFontEngineMulti ( )

Definition at line 1324 of file qfontengine.cpp.

 {
     for (int i = 0; i < engines.size(); ++i) {
         QFontEngine *fontEngine = engines.at(i);
         if (fontEngine) {
             fontEngine->ref.deref();
             if (fontEngine->cache_count == 0 && fontEngine->ref == 0)
                 delete fontEngine;
         }
     }
 }

Functions

◆ addOutlineToPath()

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

virtual

Reimplemented from QFontEngine.

Definition at line 1455 of file qfontengine.cpp.

 {
     if (glyphs.numGlyphs <= 0)
         return;
 
     int which = highByte(glyphs.glyphs[0]);
     int start = 0;
     int end, i;
     if (flags & QTextItem::RightToLeft) {
         for (int gl = 0; gl < glyphs.numGlyphs; gl++) {
             x += glyphs.advances_x[gl].toReal();
             y += glyphs.advances_y[gl].toReal();
         }
     }
     for (end = 0; end < glyphs.numGlyphs; ++end) {
         const int e = highByte(glyphs.glyphs[end]);
         if (e == which)
             continue;
 
         if (flags & QTextItem::RightToLeft) {
             for (i = start; i < end; ++i) {
                 x -= glyphs.advances_x[i].toReal();
                 y -= glyphs.advances_y[i].toReal();
             }
         }
 
         // set the high byte to zero
         for (i = start; i < end; ++i)
             glyphs.glyphs[i] = stripped(glyphs.glyphs[i]);
         engine(which)->addOutlineToPath(x, y, glyphs.mid(start, end - start), path, flags);
         // reset the high byte for all glyphs and update x and y
         const int hi = which << 24;
         for (i = start; i < end; ++i)
             glyphs.glyphs[i] = hi | glyphs.glyphs[i];
 
         if (!(flags & QTextItem::RightToLeft)) {
             for (i = start; i < end; ++i) {
                 x += glyphs.advances_x[i].toReal();
                 y += glyphs.advances_y[i].toReal();
             }
         }
 
         // change engine
         start = end;
         which = e;
     }
 
     if (flags & QTextItem::RightToLeft) {
         for (i = start; i < end; ++i) {
             x -= glyphs.advances_x[i].toReal();
             y -= glyphs.advances_y[i].toReal();
         }
     }
 
     // set the high byte to zero
     for (i = start; i < end; ++i)
         glyphs.glyphs[i] = stripped(glyphs.glyphs[i]);
 
     engine(which)->addOutlineToPath(x, y, glyphs.mid(start, end - start), path, flags);
 
     // reset the high byte for all glyphs
     const int hi = which << 24;
     for (i = start; i < end; ++i)
         glyphs.glyphs[i] = hi | glyphs.glyphs[i];
 }

◆ alphaMapForGlyph()

QImage QFontEngineMulti::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 from QFontEngine.

Definition at line 1684 of file qfontengine.cpp.

 {
     Q_ASSERT(false);
     return QImage();
 }

◆ ascent()

QFixed QFontEngineMulti::ascent ( ) const

virtual

Implements QFontEngine.

Definition at line 1615 of file qfontengine.cpp.

1616 { return engine(0)->ascent(); }

QFontEngine::ascent

virtual QFixed ascent() const =0

QFontEngineMulti::engine

QFontEngine * engine(int at) const

Definition: qfontengine_p.h:426

◆ averageCharWidth()

QFixed QFontEngineMulti::averageCharWidth ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 1631 of file qfontengine.cpp.

 {
     return engine(0)->averageCharWidth();
 }

◆ boundingBox() [1/2]

glyph_metrics_t QFontEngineMulti::boundingBox ( const QGlyphLayout & glyphs )

virtual

Implements QFontEngine.

Definition at line 1386 of file qfontengine.cpp.

 {
     if (glyphs.numGlyphs <= 0)
         return glyph_metrics_t();
 
     glyph_metrics_t overall;
 
     int which = highByte(glyphs.glyphs[0]);
     int start = 0;
     int end, i;
     for (end = 0; end < glyphs.numGlyphs; ++end) {
         const int e = highByte(glyphs.glyphs[end]);
         if (e == which)
             continue;
 
         // set the high byte to zero
         for (i = start; i < end; ++i)
             glyphs.glyphs[i] = stripped(glyphs.glyphs[i]);
 
         // merge the bounding box for this run
         const glyph_metrics_t gm = engine(which)->boundingBox(glyphs.mid(start, end - start));
 
         overall.x = qMin(overall.x, gm.x);
         overall.y = qMin(overall.y, gm.y);
         overall.width = overall.xoff + gm.width;
         overall.height = qMax(overall.height + overall.y, gm.height + gm.y) -
                          qMin(overall.y, gm.y);
         overall.xoff += gm.xoff;
         overall.yoff += gm.yoff;
 
         // reset the high byte for all glyphs
         const int hi = which << 24;
         for (i = start; i < end; ++i)
             glyphs.glyphs[i] = hi | glyphs.glyphs[i];
 
         // change engine
         start = end;
         which = e;
     }
 
     // set the high byte to zero
     for (i = start; i < end; ++i)
         glyphs.glyphs[i] = stripped(glyphs.glyphs[i]);
 
     // merge the bounding box for this run
     const glyph_metrics_t gm = engine(which)->boundingBox(glyphs.mid(start, end - start));
 
     overall.x = qMin(overall.x, gm.x);
     overall.y = qMin(overall.y, gm.y);
     overall.width = overall.xoff + gm.width;
     overall.height = qMax(overall.height + overall.y, gm.height + gm.y) -
                      qMin(overall.y, gm.y);
     overall.xoff += gm.xoff;
     overall.yoff += gm.yoff;
 
     // reset the high byte for all glyphs
     const int hi = which << 24;
     for (i = start; i < end; ++i)
         glyphs.glyphs[i] = hi | glyphs.glyphs[i];
 
     return overall;
 }

◆ boundingBox() [2/2]

glyph_metrics_t QFontEngineMulti::boundingBox ( glyph_t glyph )

virtual

Implements QFontEngine.

Definition at line 1608 of file qfontengine.cpp.

 {
     const int which = highByte(glyph);
     Q_ASSERT(which < engines.size());
     return engine(which)->boundingBox(stripped(glyph));
 }

◆ canRender()

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

virtual

Implements QFontEngine.

Reimplemented in QFontEngineMacMulti.

Definition at line 1661 of file qfontengine.cpp.

Referenced by QFontEngineXLFD::type().

 {
     if (engine(0)->canRender(string, len))
         return true;
 
     QVarLengthGlyphLayoutArray glyphs(len);
     int nglyphs = len;
     if (stringToCMap(string, len, &glyphs, &nglyphs, QTextEngine::GlyphIndicesOnly) == false) {
         glyphs.resize(nglyphs);
         stringToCMap(string, len, &glyphs, &nglyphs, QTextEngine::GlyphIndicesOnly);
     }
 
     bool allExist = true;
     for (int i = 0; i < nglyphs; i++) {
         if (!glyphs.glyphs[i]) {
             allExist = false;
             break;
         }
     }
 
     return allExist;
 }

◆ descent()

QFixed QFontEngineMulti::descent ( ) const

virtual

Implements QFontEngine.

Definition at line 1618 of file qfontengine.cpp.

1619 { return engine(0)->descent(); }

QFontEngine::descent

virtual QFixed descent() const =0

QFontEngineMulti::engine

QFontEngine * engine(int at) const

Definition: qfontengine_p.h:426

◆ doKerning()

void QFontEngineMulti::doKerning	(	QGlyphLayout *	glyphs,
		QTextEngine::ShaperFlags	flags
	)		const

virtual

Reimplemented from QFontEngine.

Reimplemented in QFontEngineMacMulti.

Definition at line 1565 of file qfontengine.cpp.

 {
     if (glyphs->numGlyphs <= 0)
         return;
 
     int which = highByte(glyphs->glyphs[0]);
     int start = 0;
     int end, i;
     for (end = 0; end < glyphs->numGlyphs; ++end) {
         const int e = highByte(glyphs->glyphs[end]);
         if (e == which)
             continue;
 
         // set the high byte to zero
         for (i = start; i < end; ++i)
             glyphs->glyphs[i] = stripped(glyphs->glyphs[i]);
 
         QGlyphLayout offs = glyphs->mid(start, end - start);
         engine(which)->doKerning(&offs, flags);
 
         // reset the high byte for all glyphs and update x and y
         const int hi = which << 24;
         for (i = start; i < end; ++i)
             glyphs->glyphs[i] = hi | glyphs->glyphs[i];
 
         // change engine
         start = end;
         which = e;
     }
 
     // set the high byte to zero
     for (i = start; i < end; ++i)
         glyphs->glyphs[i] = stripped(glyphs->glyphs[i]);
 
     QGlyphLayout offs = glyphs->mid(start, end - start);
     engine(which)->doKerning(&offs, flags);
 
     // reset the high byte for all glyphs
     const int hi = which << 24;
     for (i = start; i < end; ++i)
         glyphs->glyphs[i] = hi | glyphs->glyphs[i];
 }

◆ engine()

QFontEngine* QFontEngineMulti::engine ( int at ) const

inline

Definition at line 426 of file qfontengine_p.h.

Referenced by QPainter::drawTextItem(), QFontDatabase::findFont(), QRawFont::fromFont(), QTextLine::glyphs(), QFontDatabase::load(), loadEngine(), and loadSingleEngine().

427 {Q_ASSERT(at < engines.size()); return engines.at(at); }

at

#define at(className, varName)

Definition: qbuiltintypes.cpp:73

Q_ASSERT

#define Q_ASSERT(cond)

Definition: qglobal.h:1823

QVector::at

const T & at(int i) const

Returns the item at index position i in the vector.

Definition: qvector.h:350

QFontEngineMulti::engines

QVector< QFontEngine * > engines

Definition: qfontengine_p.h:435

QVector::size

int size() const

Returns the number of items in the vector.

Definition: qvector.h:137

◆ getGlyphBearings()

void QFontEngineMulti::getGlyphBearings	(	glyph_t	glyph,
		qreal *	leftBearing = `0`,
		qreal *	rightBearing = `0`
	)

virtual

Reimplemented from QFontEngine.

Definition at line 1449 of file qfontengine.cpp.

 {
     int which = highByte(glyph);
     engine(which)->getGlyphBearings(stripped(glyph), leftBearing, rightBearing);
 }

◆ leading()

QFixed QFontEngineMulti::leading ( ) const

virtual

Implements QFontEngine.

Definition at line 1621 of file qfontengine.cpp.

 {
     return engine(0)->leading();
 }

◆ lineThickness()

QFixed QFontEngineMulti::lineThickness ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 1636 of file qfontengine.cpp.

 {
     return engine(0)->lineThickness();
 }

◆ loadEngine()

virtual void QFontEngineMulti::loadEngine ( int at )

protectedpure virtual

Implemented in QFontEngineMultiQWS, QFontEngineMultiQPA, QFontEngineMultiWin, QFontEngineMacMulti, QFontEngineMultiFT, QCoreTextFontEngineMulti, and QFontEngineMultiXLFD.

Referenced by QRawFont::fromFont().

◆ maxCharWidth()

qreal QFontEngineMulti::maxCharWidth ( ) const

virtual

Implements QFontEngine.

Definition at line 1646 of file qfontengine.cpp.

Referenced by QFontEngineMacMulti::stringToCMap().

 {
     return engine(0)->maxCharWidth();
 }

◆ minLeftBearing()

qreal QFontEngineMulti::minLeftBearing ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 1651 of file qfontengine.cpp.

 {
     return engine(0)->minLeftBearing();
 }

◆ minRightBearing()

qreal QFontEngineMulti::minRightBearing ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 1656 of file qfontengine.cpp.

 {
     return engine(0)->minRightBearing();
 }

◆ name()

virtual const char* QFontEngineMulti::name ( ) const

inlinevirtual

Implements QFontEngine.

Reimplemented in QFontEngineMacMulti, and QCoreTextFontEngineMulti.

Definition at line 423 of file qfontengine_p.h.

Referenced by QFontEngineXLFD::type().

424 { return "Multi"; }

◆ recalcAdvances()

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

virtual

This is a callback from harfbuzz. The font engine uses the font-system in use to find out the advances of each glyph and set it on the layout.

Reimplemented from QFontEngine.

Reimplemented in QFontEngineMacMulti.

Definition at line 1522 of file qfontengine.cpp.

 {
     if (glyphs->numGlyphs <= 0)
         return;
 
     int which = highByte(glyphs->glyphs[0]);
     int start = 0;
     int end, i;
     for (end = 0; end < glyphs->numGlyphs; ++end) {
         const int e = highByte(glyphs->glyphs[end]);
         if (e == which)
             continue;
 
         // set the high byte to zero
         for (i = start; i < end; ++i)
             glyphs->glyphs[i] = stripped(glyphs->glyphs[i]);
 
         QGlyphLayout offs = glyphs->mid(start, end - start);
         engine(which)->recalcAdvances(&offs, flags);
 
         // reset the high byte for all glyphs and update x and y
         const int hi = which << 24;
         for (i = start; i < end; ++i)
             glyphs->glyphs[i] = hi | glyphs->glyphs[i];
 
         // change engine
         start = end;
         which = e;
     }
 
     // set the high byte to zero
     for (i = start; i < end; ++i)
         glyphs->glyphs[i] = stripped(glyphs->glyphs[i]);
 
     QGlyphLayout offs = glyphs->mid(start, end - start);
     engine(which)->recalcAdvances(&offs, flags);
 
     // reset the high byte for all glyphs
     const int hi = which << 24;
     for (i = start; i < end; ++i)
         glyphs->glyphs[i] = hi | glyphs->glyphs[i];
 }

◆ stringToCMap()

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

virtual

Implements QFontEngine.

Reimplemented in QFontEngineMacMulti, and QCoreTextFontEngineMulti.

Definition at line 1336 of file qfontengine.cpp.

 {
     int ng = *nglyphs;
     if (!engine(0)->stringToCMap(str, len, glyphs, &ng, flags))
         return false;
 
     int glyph_pos = 0;
     for (int i = 0; i < len; ++i) {
         bool surrogate = (str[i].isHighSurrogate() && i < len-1 && str[i+1].isLowSurrogate());
 
         if (glyphs->glyphs[glyph_pos] == 0 && str[i].category() != QChar::Separator_Line) {
             QGlyphLayoutInstance tmp = glyphs->instance(glyph_pos);
             for (int x = 1; x < engines.size(); ++x) {
                 QFontEngine *engine = engines.at(x);
                 if (!engine) {
                     const_cast<QFontEngineMulti *>(this)->loadEngine(x);
                     engine = engines.at(x);
                 }
                 Q_ASSERT(engine != 0);
                 if (engine->type() == Box)
                     continue;
                 glyphs->advances_x[glyph_pos] = glyphs->advances_y[glyph_pos] = 0;
                 glyphs->offsets[glyph_pos] = QFixedPoint();
                 int num = 2;
                 QGlyphLayout offs = glyphs->mid(glyph_pos, num);
                 engine->stringToCMap(str + i, surrogate ? 2 : 1, &offs, &num, flags);
                 Q_ASSERT(num == 1); // surrogates only give 1 glyph
                 if (glyphs->glyphs[glyph_pos]) {
                     // set the high byte to indicate which engine the glyph came from
                     glyphs->glyphs[glyph_pos] |= (x << 24);
                     break;
                 }
             }
             // ensure we use metrics from the 1st font when we use the fallback image.
             if (!glyphs->glyphs[glyph_pos]) {
                 glyphs->setInstance(glyph_pos, tmp);
             }
         }
         if (surrogate)
             ++i;
         ++glyph_pos;
     }
 
     *nglyphs = ng;
     glyphs->numGlyphs = ng;
     return true;
 }

◆ type()

virtual Type QFontEngineMulti::type ( ) const

inlinevirtual

Implements QFontEngine.

Definition at line 419 of file qfontengine_p.h.

420 { return QFontEngine::Multi; }

QFontEngine::Multi

Definition: qfontengine_p.h:100

◆ underlinePosition()

QFixed QFontEngineMulti::underlinePosition ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 1641 of file qfontengine.cpp.

 {
     return engine(0)->underlinePosition();
 }

◆ xHeight()

QFixed QFontEngineMulti::xHeight ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 1626 of file qfontengine.cpp.

 {
     return engine(0)->xHeight();
 }

Friends and Related Functions

◆ QPSPrintEngineFontMulti

friend class QPSPrintEngineFontMulti

friend

Definition at line 432 of file qfontengine_p.h.

◆ QPSPrintEnginePrivate

friend class QPSPrintEnginePrivate

friend

Definition at line 431 of file qfontengine_p.h.

◆ QRawFont

friend class QRawFont

friend

Definition at line 433 of file qfontengine_p.h.

Properties

◆ engines

QVector<QFontEngine *> QFontEngineMulti::engines

protected

Definition at line 435 of file qfontengine_p.h.

Referenced by QFontEngineMacMulti::fontIndexForFontID(), QFontEngineMultiXLFD::loadEngine(), QFontEngineMultiFT::loadEngine(), QFontEngineMultiWin::loadEngine(), QFontEngineMultiQPA::loadEngine(), QFontEngineMultiQWS::loadEngine(), QFontEngineMacMulti::QFontEngineMacMulti(), QFontEngineMultiFT::QFontEngineMultiFT(), QFontEngineMultiQPA::QFontEngineMultiQPA(), QFontEngineMultiQWS::QFontEngineMultiQWS(), QFontEngineMultiWin::QFontEngineMultiWin(), QFontEngineMultiXLFD::QFontEngineMultiXLFD(), and QFontEngineMacMulti::~QFontEngineMacMulti().

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

/src/gui/text/qfontengine_p.h
/src/gui/text/qfontengine.cpp

Public Functions

Protected Functions

Protected Variables

Friends

Additional Inherited Members

Detailed Description

Constructors and Destructors

◆ QFontEngineMulti()

◆ ~QFontEngineMulti()

Functions

◆ addOutlineToPath()

◆ alphaMapForGlyph()

◆ ascent()

◆ averageCharWidth()

◆ boundingBox() [1/2]

◆ boundingBox() [2/2]

◆ canRender()

◆ descent()

◆ doKerning()

◆ engine()

◆ getGlyphBearings()

◆ leading()

◆ lineThickness()

◆ loadEngine()

◆ maxCharWidth()

◆ minLeftBearing()

◆ minRightBearing()

◆ name()

◆ recalcAdvances()

◆ stringToCMap()

◆ type()

◆ underlinePosition()

◆ xHeight()

Friends and Related Functions

◆ QPSPrintEngineFontMulti

◆ QPSPrintEnginePrivate

◆ QRawFont

Properties

◆ engines