#include <qfontengine_mac_p.h>

Inheritance diagram for QFontEngineMac:

Public Functions
virtual void	addGlyphsToPath (glyph_t glyphs, QFixedPoint positions, int numGlyphs, QPainterPath *path, QTextItem::RenderFlags)

virtual QImage	alphaMapForGlyph (glyph_t)

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

void	draw (CGContextRef ctx, qreal x, qreal y, const QTextItemInt &ti, int paintDeviceHeight)

virtual FaceId	faceId () const

virtual QByteArray	getSfntTable (uint tag) const

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

virtual QFixed	leading () const

virtual qreal	maxCharWidth () const

virtual const char *	name () const

virtual Properties	properties () const

	QFontEngineMac (ATSUStyle baseStyle, ATSUFontID fontID, const QFontDef &def, QFontEngineMacMulti *multiEngine=0)

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

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

virtual int	synthesized () const

virtual Type	type () const

virtual QFixed	xHeight () const

virtual	~QFontEngineMac ()

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

virtual void	addOutlineToPath (qreal, qreal, const QGlyphLayout &, QPainterPath *, 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 glyph_metrics_t	boundingBox (glyph_t glyph, const QTransform &matrix)

virtual QFontEngine *	cloneWithSize (qreal) const

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

virtual QFixed	emSquareSize () const

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

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

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

virtual int	glyphCount () const

HB_Face	harfbuzzFace () const

HB_Font	harfbuzzFont () const

virtual QFixed	lineThickness () const

void	loadKerningPairs (QFixed scalingFactor)

virtual qreal	minLeftBearing () const

virtual qreal	minRightBearing () const

	QFontEngine ()

virtual void	removeGlyphFromCache (glyph_t)

void	setGlyphCache (void key, QFontEngineGlyphCache data)

virtual bool	supportsSubPixelPositions () const

glyph_metrics_t	tightBoundingBox (const QGlyphLayout &glyphs)

virtual QFixed	underlinePosition () const

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...

Private Functions
QImage	imageForGlyph (glyph_t glyph, int margin, bool colorful)
	Helper function for alphaMapForGlyph and alphaRGBMapForGlyph. More...

Properties
QCFType< CGFontRef >	cgFont

const unsigned char *	cmap

QByteArray	cmapTable

ATSUFontID	fontID

QGlyphLayout	kashidaGlyph

QFixed	m_ascent

QFixed	m_averageCharWidth

QFixed	m_descent

QFixed	m_leading

qreal	m_maxCharWidth

QFixed	m_xHeight

QFontEngineMacMulti *	multiEngine

ATSUStyle	style

bool	symbolCMap

int	synthesisFlags

CGAffineTransform	transform

Friends
class	QFontEngineMacMulti

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...

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...

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

Protected Variables inherited from QObject
QScopedPointer< QObjectData >	d_ptr

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 52 of file qfontengine_mac_p.h.

Constructors and Destructors

◆ QFontEngineMac()

QFontEngineMac::QFontEngineMac	(	ATSUStyle	baseStyle,
		ATSUFontID	fontID,
		const QFontDef &	def,
		QFontEngineMacMulti *	multiEngine = `0`
	)

Definition at line 627 of file qfontengine_mac.mm.

     : fontID(fontID), multiEngine(multiEngine), cmap(0), symbolCMap(false)
 {
     fontDef = def;
     ATSUCreateAndCopyStyle(baseStyle, &style);
     ATSFontRef atsFont = FMGetATSFontRefFromFont(fontID);
     cgFont = CGFontCreateWithPlatformFont(&atsFont);
 
     const int maxAttributeCount = 4;
     ATSUAttributeTag tags[maxAttributeCount + 1];
     ByteCount sizes[maxAttributeCount + 1];
     ATSUAttributeValuePtr values[maxAttributeCount + 1];
     int attributeCount = 0;
 
     synthesisFlags = 0;
 
     // synthesizing using CG is not recommended
     quint16 macStyle = 0;
     {
         uchar data[4];
         ByteCount len = 4;
         if (ATSFontGetTable(atsFont, MAKE_TAG('h', 'e', 'a', 'd'), 44, 4, &data, &len) == noErr)
             macStyle = qFromBigEndian<quint16>(data);
     }
 
     Boolean atsuBold = false;
     Boolean atsuItalic = false;
     if (fontDef.weight >= QFont::Bold) {
         if (!(macStyle & 1)) {
             synthesisFlags |= SynthesizedBold;
             atsuBold = true;
             tags[attributeCount] = kATSUQDBoldfaceTag;
             sizes[attributeCount] = sizeof(atsuBold);
             values[attributeCount] = &atsuBold;
             ++attributeCount;
         }
     }
     if (fontDef.style != QFont::StyleNormal) {
         if (!(macStyle & 2)) {
             synthesisFlags |= SynthesizedItalic;
             atsuItalic = true;
             tags[attributeCount] = kATSUQDItalicTag;
             sizes[attributeCount] = sizeof(atsuItalic);
             values[attributeCount] = &atsuItalic;
             ++attributeCount;
         }
     }
 
     tags[attributeCount] = kATSUFontTag;
     values[attributeCount] = &fontID;
     sizes[attributeCount] = sizeof(fontID);
     ++attributeCount;
 
     Q_ASSERT(attributeCount < maxAttributeCount + 1);
     OSStatus err = ATSUSetAttributes(style, attributeCount, tags, sizes, values);
     Q_ASSERT(err == noErr);
     Q_UNUSED(err);
 
     // CTFontCopyTable
     quint16 tmpFsType;
     if (ATSFontGetTable(atsFont, MAKE_TAG('O', 'S', '/', '2'), 8, 2, &tmpFsType, 0) == noErr)
        fsType = qFromBigEndian<quint16>(tmpFsType);
     else
         fsType = 0;
 
     if (multiEngine)
     transform = multiEngine->transform;
     else
     transform = CGAffineTransformIdentity;
 
     ATSUTextMeasurement metric;
 
     ATSUGetAttribute(style, kATSUAscentTag, sizeof(metric), &metric, 0);
     m_ascent = FixRound(metric);
 
     ATSUGetAttribute(style, kATSUDescentTag, sizeof(metric), &metric, 0);
     m_descent = FixRound(metric);
 
     ATSUGetAttribute(style, kATSULeadingTag, sizeof(metric), &metric, 0);
     m_leading = FixRound(metric);
 
     ATSFontMetrics metrics;
 
     ATSFontGetHorizontalMetrics(FMGetATSFontRefFromFont(fontID), kATSOptionFlagsDefault, &metrics);
     m_maxCharWidth = metrics.maxAdvanceWidth * fontDef.pointSize;
 
     ATSFontGetHorizontalMetrics(FMGetATSFontRefFromFont(fontID), kATSOptionFlagsDefault, &metrics);
     m_xHeight = QFixed::fromReal(metrics.xHeight * fontDef.pointSize);
 
     ATSFontGetHorizontalMetrics(FMGetATSFontRefFromFont(fontID), kATSOptionFlagsDefault, &metrics);
     m_averageCharWidth = QFixed::fromReal(metrics.avgAdvanceWidth * fontDef.pointSize);
 
     // Use width of 'X' if ATSFontGetHorizontalMetrics returns 0 for avgAdvanceWidth.
     if (m_averageCharWidth == QFixed(0)) {
         QChar c('X');
         QGlyphLayoutArray<1> glyphs;
         int nglyphs = 1;
         stringToCMap(&c, 1, &glyphs, &nglyphs, 0);
         glyph_metrics_t metrics = boundingBox(glyphs);
         m_averageCharWidth =  metrics.width;
     }
 }

◆ ~QFontEngineMac()

QFontEngineMac::~QFontEngineMac ( )

virtual

Definition at line 730 of file qfontengine_mac.mm.

 {
     ATSUDisposeStyle(style);
 }

Functions

◆ addGlyphsToPath()

void QFontEngineMac::addGlyphsToPath	(	glyph_t *	glyphs,
		QFixedPoint *	positions,
		int	numGlyphs,
		QPainterPath *	path,
		QTextItem::RenderFlags
	)

virtual

Reimplemented from QFontEngine.

Definition at line 918 of file qfontengine_mac.mm.

 {
     addGlyphsToPathHelper(style, glyphs, positions, numGlyphs, path);
 }

◆ alphaMapForGlyph()

QImage QFontEngineMac::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 981 of file qfontengine_mac.mm.

Referenced by type().

 {
     QImage im = imageForGlyph(glyph, 2, false);
 
     QImage indexed(im.width(), im.height(), QImage::Format_Indexed8);
     QVector<QRgb> colors(256);
     for (int i=0; i<256; ++i)
         colors[i] = qRgba(0, 0, 0, i);
     indexed.setColorTable(colors);
 
     for (int y=0; y<im.height(); ++y) {
         uint *src = (uint*) im.scanLine(y);
         uchar *dst = indexed.scanLine(y);
         for (int x=0; x<im.width(); ++x) {
             *dst = qGray(*src);
             ++dst;
             ++src;
         }
     }
 
     return indexed;
 }

◆ alphaRGBMapForGlyph()

QImage QFontEngineMac::alphaRGBMapForGlyph	(	glyph_t	glyph,
		QFixed	subPixelPosition,
		int	margin,
		const QTransform &	t
	)

virtual

Reimplemented from QFontEngine.

Definition at line 1004 of file qfontengine_mac.mm.

Referenced by type().

 {
     QImage im = imageForGlyph(glyph, margin, true);
 
     if (t.type() >= QTransform::TxScale) {
         im = im.transformed(t);
     }
 
     qGamma_correct_back_to_linear_cs(&im);
 
     return im;
 }

◆ ascent()

QFixed QFontEngineMac::ascent ( ) const

virtual

Implements QFontEngine.

Definition at line 846 of file qfontengine_mac.mm.

Referenced by boundingBox().

 {
     return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
             ? m_ascent.round()
             : m_ascent;
 }

◆ averageCharWidth()

QFixed QFontEngineMac::averageCharWidth ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 883 of file qfontengine_mac.mm.

 {
     return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
             ? m_averageCharWidth.round()
             : m_averageCharWidth;
 }

◆ boundingBox() [1/2]

glyph_metrics_t QFontEngineMac::boundingBox ( const QGlyphLayout & glyphs )

virtual

Implements QFontEngine.

Definition at line 804 of file qfontengine_mac.mm.

Referenced by imageForGlyph(), and QFontEngineMac().

 {
     QFixed w;
     bool round = fontDef.styleStrategy & QFont::ForceIntegerMetrics;
     for (int i = 0; i < glyphs.numGlyphs; ++i) {
         w += round ? glyphs.effectiveAdvance(i).round()
                    : glyphs.effectiveAdvance(i);
     }
     return glyph_metrics_t(0, -(ascent()), w - lastRightBearing(glyphs, round), ascent()+descent(), w, 0);
 }

◆ boundingBox() [2/2]

glyph_metrics_t QFontEngineMac::boundingBox ( glyph_t glyph )

virtual

Implements QFontEngine.

Definition at line 815 of file qfontengine_mac.mm.

 {
     GlyphID atsuGlyph = glyph;
 
     ATSGlyphScreenMetrics metrics;
 
     ATSUGlyphGetScreenMetrics(style, 1, &atsuGlyph, 0,
                               /* iForcingAntiAlias =*/ false,
                               /* iAntiAliasSwitch =*/true,
                               &metrics);
 
     // ### check again
 
     glyph_metrics_t gm;
     gm.width = int(metrics.width);
     gm.height = int(metrics.height);
     gm.x = QFixed::fromReal(metrics.topLeft.x);
     gm.y = -QFixed::fromReal(metrics.topLeft.y);
     gm.xoff = QFixed::fromReal(metrics.deviceAdvance.x);
     gm.yoff = QFixed::fromReal(metrics.deviceAdvance.y);
 
     if (fontDef.styleStrategy & QFont::ForceIntegerMetrics) {
         gm.x = gm.x.floor();
         gm.y = gm.y.floor();
         gm.xoff = gm.xoff.round();
         gm.yoff = gm.yoff.round();
     }
 
     return gm;
 }

◆ canRender()

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

virtual

Implements QFontEngine.

Definition at line 1018 of file qfontengine_mac.mm.

Referenced by name(), and QFontEngineMacMulti::name().

 {
     Q_ASSERT(false);
     Q_UNUSED(string);
     Q_UNUSED(len);
     return false;
 }

◆ descent()

QFixed QFontEngineMac::descent ( ) const

virtual

Implements QFontEngine.

Definition at line 853 of file qfontengine_mac.mm.

Referenced by boundingBox().

 {
     // subtract a pixel to even out the historical +1 in QFontMetrics::height().
     // Fix in Qt 5.
     return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
             ? m_descent.round() - 1
             : m_descent;
 }

◆ draw()

void QFontEngineMac::draw	(	CGContextRef	ctx,
		qreal	x,
		qreal	y,
		const QTextItemInt &	ti,
		int	paintDeviceHeight
	)

Definition at line 1026 of file qfontengine_mac.mm.

Referenced by type().

 {
     QVarLengthArray<QFixedPoint> positions;
     QVarLengthArray<glyph_t> glyphs;
     QTransform matrix;
     matrix.translate(x, y);
     getGlyphPositions(ti.glyphs, matrix, ti.flags, glyphs, positions);
     if (glyphs.size() == 0)
         return;
 
     CGContextSetFontSize(ctx, fontDef.pixelSize);
 
     CGAffineTransform oldTextMatrix = CGContextGetTextMatrix(ctx);
 
     CGAffineTransform cgMatrix = CGAffineTransformMake(1, 0, 0, -1, 0, -paintDeviceHeight);
 
     CGAffineTransformConcat(cgMatrix, oldTextMatrix);
 
     if (synthesisFlags & QFontEngine::SynthesizedItalic)
         cgMatrix = CGAffineTransformConcat(cgMatrix, CGAffineTransformMake(1, 0, -tanf(14 * acosf(0) / 90), 1, 0, 0));
 
     cgMatrix = CGAffineTransformConcat(cgMatrix, transform);
 
     CGContextSetTextMatrix(ctx, cgMatrix);
 
     CGContextSetTextDrawingMode(ctx, kCGTextFill);
 
 
     QVarLengthArray<CGSize> advances(glyphs.size());
     QVarLengthArray<CGGlyph> cgGlyphs(glyphs.size());
 
     for (int i = 0; i < glyphs.size() - 1; ++i) {
         advances[i].width = (positions[i + 1].x - positions[i].x).toReal();
         advances[i].height = (positions[i + 1].y - positions[i].y).toReal();
         cgGlyphs[i] = glyphs[i];
     }
     advances[glyphs.size() - 1].width = 0;
     advances[glyphs.size() - 1].height = 0;
     cgGlyphs[glyphs.size() - 1] = glyphs[glyphs.size() - 1];
 
     CGContextSetFont(ctx, cgFont);
 
     CGContextSetTextPosition(ctx, positions[0].x.toReal(), positions[0].y.toReal());
 
     CGContextShowGlyphsWithAdvances(ctx, cgGlyphs.data(), advances.data(), glyphs.size());
 
     if (synthesisFlags & QFontEngine::SynthesizedBold) {
         CGContextSetTextPosition(ctx, positions[0].x.toReal() + 0.5 * lineThickness().toReal(),
                                       positions[0].y.toReal());
 
         CGContextShowGlyphsWithAdvances(ctx, cgGlyphs.data(), advances.data(), glyphs.size());
     }
 
     CGContextSetTextMatrix(ctx, oldTextMatrix);
 }

◆ faceId()

QFontEngine::FaceId QFontEngineMac::faceId ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 1082 of file qfontengine_mac.mm.

Referenced by type().

 {
     FaceId ret;
 #if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
 if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_5) {
     // CTFontGetPlatformFont
     FSRef ref;
     if (ATSFontGetFileReference(FMGetATSFontRefFromFont(fontID), &ref) != noErr)
         return ret;
     ret.filename = QByteArray(128, 0);
     ret.index = fontID;
     FSRefMakePath(&ref, (UInt8 *)ret.filename.data(), ret.filename.size());
 }else
 #endif
 {
     FSSpec spec;
     if (ATSFontGetFileSpecification(FMGetATSFontRefFromFont(fontID), &spec) != noErr)
         return ret;
 
     FSRef ref;
     FSpMakeFSRef(&spec, &ref);
     ret.filename = QByteArray(128, 0);
     ret.index = fontID;
     FSRefMakePath(&ref, (UInt8 *)ret.filename.data(), ret.filename.size());
 }
     return ret;
 }

◆ getSfntTable()

QByteArray QFontEngineMac::getSfntTable ( uint tag ) const

virtual

Definition at line 1110 of file qfontengine_mac.mm.

Referenced by stringToCMap(), and type().

 {
     ATSFontRef atsFont = FMGetATSFontRefFromFont(fontID);
 
     ByteCount length;
     OSStatus status = ATSFontGetTable(atsFont, tag, 0, 0, 0, &length);
     if (status != noErr)
         return QByteArray();
     QByteArray table(length, 0);
     // CTFontCopyTable
     status = ATSFontGetTable(atsFont, tag, 0, table.length(), table.data(), &length);
     if (status != noErr)
         return QByteArray();
     return table;
 }

◆ getUnscaledGlyph()

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

virtual

Reimplemented from QFontEngine.

Definition at line 1183 of file qfontengine_mac.mm.

Referenced by type().

 {
     ATSUStyle unscaledStyle;
     ATSUCreateAndCopyStyle(style, &unscaledStyle);
 
     int emSquare = properties().emSquare.toInt();
 
     const int maxAttributeCount = 4;
     ATSUAttributeTag tags[maxAttributeCount + 1];
     ByteCount sizes[maxAttributeCount + 1];
     ATSUAttributeValuePtr values[maxAttributeCount + 1];
     int attributeCount = 0;
 
     Fixed size = FixRatio(emSquare, 1);
     tags[attributeCount] = kATSUSizeTag;
     sizes[attributeCount] = sizeof(size);
     values[attributeCount] = &size;
     ++attributeCount;
 
     Q_ASSERT(attributeCount < maxAttributeCount + 1);
     OSStatus err = ATSUSetAttributes(unscaledStyle, attributeCount, tags, sizes, values);
     Q_ASSERT(err == noErr);
     Q_UNUSED(err);
 
     // various CTFont metrics functions: CTFontGetBoundingRectsForGlyphs, CTFontGetAdvancesForGlyphs
     GlyphID atsuGlyph = glyph;
     ATSGlyphScreenMetrics atsuMetrics;
     ATSUGlyphGetScreenMetrics(unscaledStyle, 1, &atsuGlyph, 0,
                               /* iForcingAntiAlias =*/ false,
                               /* iAntiAliasSwitch =*/true,
                               &atsuMetrics);
 
     metrics->width = int(atsuMetrics.width);
     metrics->height = int(atsuMetrics.height);
     metrics->x = QFixed::fromReal(atsuMetrics.topLeft.x);
     metrics->y = -QFixed::fromReal(atsuMetrics.topLeft.y);
     metrics->xoff = QFixed::fromReal(atsuMetrics.deviceAdvance.x);
     metrics->yoff = QFixed::fromReal(atsuMetrics.deviceAdvance.y);
 
     QFixedPoint p;
     addGlyphsToPathHelper(unscaledStyle, &glyph, &p, 1, path);
 
     ATSUDisposeStyle(unscaledStyle);
 }

◆ imageForGlyph()

QImage QFontEngineMac::imageForGlyph	(	glyph_t	glyph,
		int	margin,
		bool	colorful
	)

private

Helper function for alphaMapForGlyph and alphaRGBMapForGlyph.

The two are identical, except for the subpixel antialiasing...

Definition at line 929 of file qfontengine_mac.mm.

Referenced by alphaMapForGlyph(), alphaRGBMapForGlyph(), and type().

 {
     const glyph_metrics_t br = boundingBox(glyph);
     QImage im(qRound(br.width)+2, qRound(br.height)+4, QImage::Format_RGB32);
     im.fill(0xff000000);
 
     CGColorSpaceRef colorspace = QCoreGraphicsPaintEngine::macGenericColorSpace();
     uint cgflags = kCGImageAlphaNoneSkipFirst;
 #ifdef kCGBitmapByteOrder32Host //only needed because CGImage.h added symbols in the minor version
     cgflags |= kCGBitmapByteOrder32Host;
 #endif
     CGContextRef ctx = CGBitmapContextCreate(im.bits(), im.width(), im.height(),
                                              8, im.bytesPerLine(), colorspace,
                                              cgflags);
     CGContextSetFontSize(ctx, fontDef.pixelSize);
     CGContextSetShouldAntialias(ctx, fontDef.pointSize > qt_antialiasing_threshold && !(fontDef.styleStrategy & QFont::NoAntialias));
     // turn off sub-pixel hinting - no support for that in OpenGL
     CGContextSetShouldSmoothFonts(ctx, colorful);
     CGAffineTransform oldTextMatrix = CGContextGetTextMatrix(ctx);
     CGAffineTransform cgMatrix = CGAffineTransformMake(1, 0, 0, 1, 0, 0);
     CGAffineTransformConcat(cgMatrix, oldTextMatrix);
 
     if (synthesisFlags & QFontEngine::SynthesizedItalic)
         cgMatrix = CGAffineTransformConcat(cgMatrix, CGAffineTransformMake(1, 0, tanf(14 * acosf(0) / 90), 1, 0, 0));
 
     cgMatrix = CGAffineTransformConcat(cgMatrix, transform);
 
     CGContextSetTextMatrix(ctx, cgMatrix);
     CGContextSetRGBFillColor(ctx, 1, 1, 1, 1);
     CGContextSetTextDrawingMode(ctx, kCGTextFill);
     CGContextSetFont(ctx, cgFont);
 
     qreal pos_x = -br.x.toReal() + 1;
     qreal pos_y = im.height() + br.y.toReal() - 2;
     CGContextSetTextPosition(ctx, pos_x, pos_y);
 
     CGSize advance;
     advance.width = 0;
     advance.height = 0;
     CGGlyph cgGlyph = glyph;
     CGContextShowGlyphsWithAdvances(ctx, &cgGlyph, &advance, 1);
 
     if (synthesisFlags & QFontEngine::SynthesizedBold) {
         CGContextSetTextPosition(ctx, pos_x + 0.5 * lineThickness().toReal(), pos_y);
         CGContextShowGlyphsWithAdvances(ctx, &cgGlyph, &advance, 1);
     }
 
     CGContextRelease(ctx);
 
     return im;
 }

◆ leading()

QFixed QFontEngineMac::leading ( ) const

virtual

Implements QFontEngine.

Definition at line 862 of file qfontengine_mac.mm.

 {
     return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
             ? m_leading.round()
             : m_leading;
 }

◆ maxCharWidth()

qreal QFontEngineMac::maxCharWidth ( ) const

virtual

Implements QFontEngine.

Definition at line 869 of file qfontengine_mac.mm.

 {
     return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
             ? qRound(m_maxCharWidth)
             : m_maxCharWidth;
 }

◆ name()

virtual const char* QFontEngineMac::name ( ) const

inlinevirtual

Implements QFontEngine.

Definition at line 75 of file qfontengine_mac_p.h.

75 { return "QFontEngineMac"; }

◆ properties()

QFontEngine::Properties QFontEngineMac::properties ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 1126 of file qfontengine_mac.mm.

Referenced by getUnscaledGlyph(), and type().

 {
     QFontEngine::Properties props;
     ATSFontRef atsFont = FMGetATSFontRefFromFont(fontID);
     quint16 tmp;
     // CTFontGetUnitsPerEm
     if (ATSFontGetTable(atsFont, MAKE_TAG('h', 'e', 'a', 'd'), 18, 2, &tmp, 0) == noErr)
        props.emSquare = qFromBigEndian<quint16>(tmp);
     struct {
         qint16 xMin;
         qint16 yMin;
         qint16 xMax;
         qint16 yMax;
     } bbox;
     bbox.xMin = bbox.xMax = bbox.yMin = bbox.yMax = 0;
     // CTFontGetBoundingBox
     if (ATSFontGetTable(atsFont, MAKE_TAG('h', 'e', 'a', 'd'), 36, 8, &bbox, 0) == noErr) {
         bbox.xMin = qFromBigEndian<quint16>(bbox.xMin);
         bbox.yMin = qFromBigEndian<quint16>(bbox.yMin);
         bbox.xMax = qFromBigEndian<quint16>(bbox.xMax);
         bbox.yMax = qFromBigEndian<quint16>(bbox.yMax);
     }
     struct {
         qint16 ascender;
         qint16 descender;
         qint16 linegap;
     } metrics;
     metrics.ascender = metrics.descender = metrics.linegap = 0;
     // CTFontGetAscent, etc.
     if (ATSFontGetTable(atsFont, MAKE_TAG('h', 'h', 'e', 'a'), 4, 6, &metrics, 0) == noErr) {
         metrics.ascender = qFromBigEndian<quint16>(metrics.ascender);
         metrics.descender = qFromBigEndian<quint16>(metrics.descender);
         metrics.linegap = qFromBigEndian<quint16>(metrics.linegap);
     }
     props.ascent = metrics.ascender;
     props.descent = -metrics.descender;
     props.leading = metrics.linegap;
     props.boundingBox = QRectF(bbox.xMin, -bbox.yMax,
                            bbox.xMax - bbox.xMin,
                            bbox.yMax - bbox.yMin);
     props.italicAngle = 0;
     props.capHeight = props.ascent;
 
     qint16 lw = 0;
     // fonts lie
     if (ATSFontGetTable(atsFont, MAKE_TAG('p', 'o', 's', 't'), 10, 2, &lw, 0) == noErr)
        lw = qFromBigEndian<quint16>(lw);
     props.lineWidth = lw;
 
     // CTFontCopyPostScriptName
     QCFString psName;
     if (ATSFontGetPostScriptName(FMGetATSFontRefFromFont(fontID), kATSOptionFlagsDefault, &psName) == noErr)
         props.postscriptName = QString(psName).toUtf8();
     props.postscriptName = QFontEngine::convertToPostscriptFontFamilyName(props.postscriptName);
     return props;
 }

◆ recalcAdvances()

void QFontEngineMac::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.

Definition at line 778 of file qfontengine_mac.mm.

Referenced by stringToCMap().

 {
     Q_UNUSED(flags)
 
     QVarLengthArray<GlyphID> atsuGlyphs(glyphs->numGlyphs);
     for (int i = 0; i < glyphs->numGlyphs; ++i)
         atsuGlyphs[i] = glyphs->glyphs[i];
 
     QVarLengthArray<ATSGlyphScreenMetrics> metrics(glyphs->numGlyphs);
 
     ATSUGlyphGetScreenMetrics(style, glyphs->numGlyphs, atsuGlyphs.data(), sizeof(GlyphID),
                               /* iForcingAntiAlias =*/ false,
                               /* iAntiAliasSwitch =*/true,
                               metrics.data());
 
     for (int i = 0; i < glyphs->numGlyphs; ++i) {
         glyphs->advances_x[i] = QFixed::fromReal(metrics[i].deviceAdvance.x);
         glyphs->advances_y[i] = QFixed::fromReal(metrics[i].deviceAdvance.y);
 
         if (fontDef.styleStrategy & QFont::ForceIntegerMetrics) {
             glyphs->advances_x[i] = glyphs->advances_x[i].round();
             glyphs->advances_y[i] = glyphs->advances_y[i].round();
         }
     }
 }

◆ stringToCMap()

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

virtual

Implements QFontEngine.

Definition at line 746 of file qfontengine_mac.mm.

Referenced by QFontEngineMac().

 {
     if (!cmap) {
         cmapTable = getSfntTable(MAKE_TAG('c', 'm', 'a', 'p'));
         int size = 0;
         cmap = getCMap(reinterpret_cast<const uchar *>(cmapTable.constData()), cmapTable.size(), &symbolCMap, &size);
         if (!cmap)
             return false;
     }
     if (symbolCMap) {
         for (int i = 0; i < len; ++i) {
             unsigned int uc = getChar(str, i, len);
             glyphs->glyphs[i] = getTrueTypeGlyphIndex(cmap, uc);
             if(!glyphs->glyphs[i] && uc < 0x100)
                 glyphs->glyphs[i] = getTrueTypeGlyphIndex(cmap, uc + 0xf000);
         }
     } else {
         for (int i = 0; i < len; ++i) {
             unsigned int uc = getChar(str, i, len);
             glyphs->glyphs[i] = getTrueTypeGlyphIndex(cmap, uc);
         }
     }
 
     *nglyphs = len;
     glyphs->numGlyphs = *nglyphs;
 
     if (!(flags & QTextEngine::GlyphIndicesOnly))
         recalcAdvances(glyphs, flags);
 
     return true;
 }

◆ synthesized()

virtual int QFontEngineMac::synthesized ( ) const

inlinevirtual

Reimplemented from QFontEngine.

Definition at line 79 of file qfontengine_mac_p.h.

79 { return synthesisFlags; }

QFontEngineMac::synthesisFlags

int synthesisFlags

Definition: qfontengine_mac_p.h:98

◆ type()

virtual Type QFontEngineMac::type ( ) const

inlinevirtual

Implements QFontEngine.

Definition at line 81 of file qfontengine_mac_p.h.

81 { return QFontEngine::Mac; }

QFontEngine::Mac

Definition: qfontengine_p.h:109

◆ xHeight()

QFixed QFontEngineMac::xHeight ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 876 of file qfontengine_mac.mm.

 {
     return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
             ? m_xHeight.round()
             : m_xHeight;
 }

Friends and Related Functions

◆ QFontEngineMacMulti

friend class QFontEngineMacMulti

friend

Definition at line 54 of file qfontengine_mac_p.h.

Properties

◆ cgFont

QCFType<CGFontRef> QFontEngineMac::cgFont

private

Definition at line 96 of file qfontengine_mac_p.h.

Referenced by draw(), imageForGlyph(), and QFontEngineMac().

◆ cmap

const unsigned char* QFontEngineMac::cmap

mutableprivate

Definition at line 101 of file qfontengine_mac_p.h.

Referenced by stringToCMap().

◆ cmapTable

QByteArray QFontEngineMac::cmapTable

mutableprivate

Definition at line 103 of file qfontengine_mac_p.h.

Referenced by stringToCMap().

◆ fontID

ATSUFontID QFontEngineMac::fontID

private

Definition at line 95 of file qfontengine_mac_p.h.

Referenced by faceId(), QFontEngineMacMulti::fontIndexForFontID(), getSfntTable(), QFontEngineMacMulti::macFontID(), properties(), and QFontEngineMac().

◆ kashidaGlyph

QGlyphLayout QFontEngineMac::kashidaGlyph

mutableprivate

Definition at line 99 of file qfontengine_mac_p.h.

◆ m_ascent

QFixed QFontEngineMac::m_ascent

private

Definition at line 105 of file qfontengine_mac_p.h.

Referenced by ascent(), and QFontEngineMac().

◆ m_averageCharWidth

QFixed QFontEngineMac::m_averageCharWidth

private

Definition at line 110 of file qfontengine_mac_p.h.

Referenced by averageCharWidth(), and QFontEngineMac().

◆ m_descent

QFixed QFontEngineMac::m_descent

private

Definition at line 106 of file qfontengine_mac_p.h.

Referenced by descent(), and QFontEngineMac().

◆ m_leading

QFixed QFontEngineMac::m_leading

private

Definition at line 107 of file qfontengine_mac_p.h.

Referenced by leading(), and QFontEngineMac().

◆ m_maxCharWidth

qreal QFontEngineMac::m_maxCharWidth

private

Definition at line 108 of file qfontengine_mac_p.h.

Referenced by maxCharWidth(), and QFontEngineMac().

◆ m_xHeight

QFixed QFontEngineMac::m_xHeight

private

Definition at line 109 of file qfontengine_mac_p.h.

Referenced by QFontEngineMac(), and xHeight().

◆ multiEngine

QFontEngineMacMulti* QFontEngineMac::multiEngine

private

Definition at line 100 of file qfontengine_mac_p.h.

Referenced by QFontEngineMacMulti::~QFontEngineMacMulti().

◆ style

ATSUStyle QFontEngineMac::style

private

Definition at line 97 of file qfontengine_mac_p.h.

Referenced by addGlyphsToPath(), boundingBox(), getUnscaledGlyph(), QFontEngineMac(), recalcAdvances(), and ~QFontEngineMac().

◆ symbolCMap

bool QFontEngineMac::symbolCMap

mutableprivate

Definition at line 102 of file qfontengine_mac_p.h.

Referenced by stringToCMap().

◆ synthesisFlags

int QFontEngineMac::synthesisFlags

private

Definition at line 98 of file qfontengine_mac_p.h.

Referenced by draw(), imageForGlyph(), QFontEngineMac(), and synthesized().

◆ transform

CGAffineTransform QFontEngineMac::transform

private

Definition at line 104 of file qfontengine_mac_p.h.

Referenced by draw(), imageForGlyph(), and QFontEngineMac().

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

/src/gui/text/qfontengine_mac_p.h
/src/gui/text/qfontengine_mac.mm

Public Functions

Private Functions

Properties

Friends

Additional Inherited Members

Detailed Description

Constructors and Destructors

◆ QFontEngineMac()

◆ ~QFontEngineMac()

Functions

◆ addGlyphsToPath()

◆ alphaMapForGlyph()

◆ alphaRGBMapForGlyph()

◆ ascent()

◆ averageCharWidth()

◆ boundingBox() [1/2]

◆ boundingBox() [2/2]

◆ canRender()

◆ descent()

◆ draw()

◆ faceId()

◆ getSfntTable()

◆ getUnscaledGlyph()

◆ imageForGlyph()

◆ leading()

◆ maxCharWidth()

◆ name()

◆ properties()

◆ recalcAdvances()

◆ stringToCMap()

◆ synthesized()

◆ type()

◆ xHeight()

Friends and Related Functions

◆ QFontEngineMacMulti

Properties

◆ cgFont

◆ cmap

◆ cmapTable

◆ fontID

◆ kashidaGlyph

◆ m_ascent

◆ m_averageCharWidth

◆ m_descent

◆ m_leading

◆ m_maxCharWidth

◆ m_xHeight

◆ multiEngine

◆ style

◆ symbolCMap

◆ synthesisFlags

◆ transform