#include <qfontengine_qpa_p.h>

Inheritance diagram for QFontEngineQPA:

Classes
struct	Block

struct	Glyph

struct	Header

struct	Tag

Public Types
enum	{ CurrentMajorVersion = 2, CurrentMinorVersion = 0 }

enum	BlockTag { CMapBlock, GMapBlock, GlyphBlock }

enum	GlyphFormat { BitmapGlyphs = 1, AlphamapGlyphs = 8 }

enum	HeaderTag { Tag_FontName, Tag_FileName, Tag_FileIndex, Tag_FontRevision, Tag_FreeText, Tag_Ascent, Tag_Descent, Tag_Leading, Tag_XHeight, Tag_AverageCharWidth, Tag_MaxCharWidth, Tag_LineThickness, Tag_MinLeftBearing, Tag_MinRightBearing, Tag_UnderlinePosition, Tag_GlyphFormat, Tag_PixelSize, Tag_Weight, Tag_Style, Tag_EndOfHeader, Tag_WritingSystems, NumTags }

enum	TagType { StringType, FixedType, UInt8Type, UInt32Type, BitFieldType }

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

QImage	alphaMapForGlyph (glyph_t t)

QFixed	ascent () const

glyph_metrics_t	boundingBox (const QGlyphLayout &glyphs)

glyph_metrics_t	boundingBox (glyph_t glyph)

bool	canRender (const QChar *string, int len)

QFixed	descent () const

FaceId	faceId () const

const Glyph *	findGlyph (glyph_t g) const

bool	getSfntTableData (uint tag, uchar buffer, uint length) const

virtual int	glyphCount () const

bool	isValid () const

QFixed	leading () const

QFixed	lineThickness () const

qreal	maxCharWidth () const

qreal	minLeftBearing () const

qreal	minRightBearing () const

const char *	name () const

	QFontEngineQPA (const QFontDef &def, const QByteArray &data)

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

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

Type	type () const

QFixed	underlinePosition () const

	~QFontEngineQPA ()

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 QFixed	averageCharWidth () const

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

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

Static Public Functions
static QVariant	extractHeaderField (const uchar *data, HeaderTag tag)

static bool	verifyHeader (const uchar *data, int size)

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)

Properties
quint32	cmapOffset

int	cmapSize

int	dataSize

QString	encodedFileName

const uchar *	externalCMap

FaceId	face_id

const uchar *	fontData

QByteArray	freetypeCMapTable

quint32	glyphDataOffset

quint32	glyphDataSize

quint32	glyphMapEntries

quint32	glyphMapOffset

QString	internalFileName

bool	kerning_pairs_loaded

bool	readOnly

Additional Inherited Members
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...

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 72 of file qfontengine_qpa_p.h.

Enumerations

◆ anonymous enum

anonymous enum

Enumerator
CurrentMajorVersion
CurrentMinorVersion

Definition at line 122 of file qfontengine_qpa_p.h.

          {
         CurrentMajorVersion = 2,
         CurrentMinorVersion = 0
     };

◆ BlockTag

enum QFontEngineQPA::BlockTag

Enumerator
CMapBlock
GMapBlock
GlyphBlock

Definition at line 130 of file qfontengine_qpa_p.h.

                   {
         CMapBlock,
         GMapBlock,
         GlyphBlock
     };

◆ GlyphFormat

enum QFontEngineQPA::GlyphFormat

Enumerator
BitmapGlyphs
AlphamapGlyphs

Definition at line 117 of file qfontengine_qpa_p.h.

                      {
         BitmapGlyphs = 1,
         AlphamapGlyphs = 8
     };

◆ HeaderTag

enum QFontEngineQPA::HeaderTag

Enumerator
Tag_FontName
Tag_FileName
Tag_FileIndex
Tag_FontRevision
Tag_FreeText
Tag_Ascent
Tag_Descent
Tag_Leading
Tag_XHeight
Tag_AverageCharWidth
Tag_MaxCharWidth
Tag_LineThickness
Tag_MinLeftBearing
Tag_MinRightBearing
Tag_UnderlinePosition
Tag_GlyphFormat
Tag_PixelSize
Tag_Weight
Tag_Style
Tag_EndOfHeader
Tag_WritingSystems
NumTags

Definition at line 77 of file qfontengine_qpa_p.h.

                    {
         Tag_FontName,          // 0 string
         Tag_FileName,          // 1 string
         Tag_FileIndex,         // 2 quint32
         Tag_FontRevision,      // 3 quint32
         Tag_FreeText,          // 4 string
         Tag_Ascent,            // 5 QFixed
         Tag_Descent,           // 6 QFixed
         Tag_Leading,           // 7 QFixed
         Tag_XHeight,           // 8 QFixed
         Tag_AverageCharWidth,  // 9 QFixed
         Tag_MaxCharWidth,      // 10 QFixed
         Tag_LineThickness,     // 11 QFixed
         Tag_MinLeftBearing,    // 12 QFixed
         Tag_MinRightBearing,   // 13 QFixed
         Tag_UnderlinePosition, // 14 QFixed
         Tag_GlyphFormat,       // 15 quint8
         Tag_PixelSize,         // 16 quint8
         Tag_Weight,            // 17 quint8
         Tag_Style,             // 18 quint8
         Tag_EndOfHeader,       // 19 string
         Tag_WritingSystems,    // 20 bitfield
 
         NumTags
     };

◆ TagType

enum QFontEngineQPA::TagType

Enumerator
StringType
FixedType
UInt8Type
UInt32Type
BitFieldType

Definition at line 103 of file qfontengine_qpa_p.h.

                  {
         StringType,
         FixedType,
         UInt8Type,
         UInt32Type,
         BitFieldType
     };

Constructors and Destructors

◆ QFontEngineQPA()

QFontEngineQPA::QFontEngineQPA	(	const QFontDef &	def,
		const QByteArray &	data
	)

Definition at line 237 of file qfontengine_qpa.cpp.

     : fontData(reinterpret_cast<const uchar *>(data.constData())), dataSize(data.size())
 {
     fontDef = def;
     cache_cost = 100;
     externalCMap = 0;
     cmapOffset = 0;
     cmapSize = 0;
     glyphMapOffset = 0;
     glyphMapEntries = 0;
     glyphDataOffset = 0;
     glyphDataSize = 0;
     kerning_pairs_loaded = false;
     readOnly = true;
 
 #if defined(DEBUG_FONTENGINE)
     qDebug() << "QFontEngineQPA::QFontEngineQPA( fd =" << fd << ", renderingFontEngine =" << renderingFontEngine << ')';
 #endif
 
     if (!verifyHeader(fontData, dataSize)) {
 #if defined(DEBUG_FONTENGINE)
         qDebug() << "verifyHeader failed!";
 #endif
         return;
     }
 
     const Header *header = reinterpret_cast<const Header *>(fontData);
 
     readOnly = (header->lock == 0xffffffff);
 
     const uchar *imgData = fontData + sizeof(Header) + qFromBigEndian<quint16>(header->dataSize);
     const uchar *endPtr = fontData + dataSize;
     while (imgData <= endPtr - 8) {
         quint16 blockTag = readValue<quint16>(imgData);
         imgData += 2; // skip padding
         quint32 blockSize = readValue<quint32>(imgData);
 
         if (blockTag == CMapBlock) {
             cmapOffset = imgData - fontData;
             cmapSize = blockSize;
         } else if (blockTag == GMapBlock) {
             glyphMapOffset = imgData - fontData;
             glyphMapEntries = blockSize / 4;
         } else if (blockTag == GlyphBlock) {
             glyphDataOffset = imgData - fontData;
             glyphDataSize = blockSize;
         }
 
         imgData += blockSize;
     }
 
     face_id.filename = QFile::encodeName(extractHeaderField(fontData, Tag_FileName).toString());
     face_id.index = extractHeaderField(fontData, Tag_FileIndex).toInt();
 
     // get the real cmap
     if (cmapOffset) {
         int tableSize = cmapSize;
         const uchar *cmapPtr = getCMap(fontData + cmapOffset, tableSize, &symbol, &cmapSize);
         if (cmapPtr)
             cmapOffset = cmapPtr - fontData;
         else
             cmapOffset = 0;
     } else if (externalCMap) {
         int tableSize = cmapSize;
         externalCMap = getCMap(externalCMap, tableSize, &symbol, &cmapSize);
     }
 
     // verify all the positions in the glyphMap
     if (glyphMapOffset) {
         const quint32 *gmapPtr = reinterpret_cast<const quint32 *>(fontData + glyphMapOffset);
         for (uint i = 0; i < glyphMapEntries; ++i) {
             quint32 glyphDataPos = qFromBigEndian<quint32>(gmapPtr[i]);
             if (glyphDataPos == 0xffffffff)
                 continue;
             if (glyphDataPos >= glyphDataSize) {
                 // error
                 glyphMapOffset = 0;
                 glyphMapEntries = 0;
                 break;
             }
         }
     }
 
 #if defined(DEBUG_FONTENGINE)
     if (!isValid())
         qDebug() << "fontData" <<  fontData << "dataSize" << dataSize
                  << "externalCMap" << externalCMap << "cmapOffset" << cmapOffset
                  << "glyphMapOffset" << glyphMapOffset << "glyphDataOffset" << glyphDataOffset
                  << "fd" << fd << "glyphDataSize" << glyphDataSize;
 #endif
 }

◆ ~QFontEngineQPA()

QFontEngineQPA::~QFontEngineQPA ( )

Definition at line 329 of file qfontengine_qpa.cpp.

330 {

331 }

Functions

◆ addOutlineToPath()

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

virtual

Reimplemented from QFontEngine.

Definition at line 415 of file qfontengine_qpa.cpp.

 {
     addBitmapFontToPath(x, y, glyphs, path, flags);
 }

◆ alphaMapForGlyph()

QImage QFontEngineQPA::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 402 of file qfontengine_qpa.cpp.

 {
     const Glyph *glyph = findGlyph(g);
     if (!glyph)
         return QImage();
 
     const uchar *bits = ((const uchar *) glyph) + sizeof(Glyph);
 
     QImage image(bits,glyph->width, glyph->height, glyph->bytesPerLine, QImage::Format_Indexed8);
 
     return image;
 }

◆ ascent()

QFixed QFontEngineQPA::ascent ( ) const

virtual

Implements QFontEngine.

Definition at line 462 of file qfontengine_qpa.cpp.

Referenced by boundingBox().

 {
     return QFixed::fromReal(extractHeaderField(fontData, Tag_Ascent).value<qreal>());
 }

◆ boundingBox() [1/2]

glyph_metrics_t QFontEngineQPA::boundingBox ( const QGlyphLayout & glyphs )

virtual

Implements QFontEngine.

Definition at line 420 of file qfontengine_qpa.cpp.

 {
     glyph_metrics_t overall;
     // initialize with line height, we get the same behaviour on all platforms
     overall.y = -ascent();
     overall.height = ascent() + descent() + 1;
 
     QFixed ymax = 0;
     QFixed xmax = 0;
     for (int i = 0; i < glyphs.numGlyphs; i++) {
         const Glyph *g = findGlyph(glyphs.glyphs[i]);
         if (!g)
             continue;
 
         QFixed x = overall.xoff + glyphs.offsets[i].x + g->x;
         QFixed y = overall.yoff + glyphs.offsets[i].y + g->y;
         overall.x = qMin(overall.x, x);
         overall.y = qMin(overall.y, y);
         xmax = qMax(xmax, x + g->width);
         ymax = qMax(ymax, y + g->height);
         overall.xoff += g->advance;
     }
     overall.height = qMax(overall.height, ymax - overall.y);
     overall.width = xmax - overall.x;
 
     return overall;
 }

◆ boundingBox() [2/2]

glyph_metrics_t QFontEngineQPA::boundingBox ( glyph_t glyph )

virtual

Implements QFontEngine.

Definition at line 448 of file qfontengine_qpa.cpp.

 {
     glyph_metrics_t overall;
     const Glyph *g = findGlyph(glyph);
     if (!g)
         return overall;
     overall.x = g->x;
     overall.y = g->y;
     overall.width = g->width;
     overall.height = g->height;
     overall.xoff = g->advance;
     return overall;
 }

◆ canRender()

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

virtual

Implements QFontEngine.

Definition at line 507 of file qfontengine_qpa.cpp.

 {
     const uchar *cmap = externalCMap ? externalCMap : (fontData + cmapOffset);
 
     if (symbol) {
         for (int i = 0; i < len; ++i) {
             unsigned int uc = getChar(string, i, len);
             glyph_t g = getTrueTypeGlyphIndex(cmap, uc);
             if(!g && uc < 0x100)
                 g = getTrueTypeGlyphIndex(cmap, uc + 0xf000);
             if (!g)
                 return false;
         }
     } else {
         for (int i = 0; i < len; ++i) {
             unsigned int uc = getChar(string, i, len);
             if (!getTrueTypeGlyphIndex(cmap, uc))
                 return false;
         }
     }
     return true;
 }

◆ descent()

QFixed QFontEngineQPA::descent ( ) const

virtual

Implements QFontEngine.

Definition at line 467 of file qfontengine_qpa.cpp.

Referenced by boundingBox().

 {
     return QFixed::fromReal(extractHeaderField(fontData, Tag_Descent).value<qreal>());
 }

◆ extractHeaderField()

QVariant QFontEngineQPA::extractHeaderField	(	const uchar *	data,
		HeaderTag	tag
	)

static

Definition at line 194 of file qfontengine_qpa.cpp.

Referenced by ascent(), descent(), leading(), lineThickness(), maxCharWidth(), minLeftBearing(), minRightBearing(), QFontEngineQPA(), QPlatformFontDatabase::registerQPF2Font(), and underlinePosition().

 {
     const Header *header = reinterpret_cast<const Header *>(data);
     const uchar *tagPtr = data + sizeof(Header);
     const uchar *endPtr = tagPtr + qFromBigEndian<quint16>(header->dataSize);
     while (tagPtr < endPtr - 3) {
         quint16 tag = readValue<quint16>(tagPtr);
         quint16 length = readValue<quint16>(tagPtr);
         if (tag == requestedTag) {
             switch (tagTypes[requestedTag]) {
                 case StringType:
                     return QVariant(QString::fromUtf8(reinterpret_cast<const char *>(tagPtr), length));
                 case UInt32Type:
                     return QVariant(readValue<quint32>(tagPtr));
                 case UInt8Type:
                     return QVariant(uint(*tagPtr));
                 case FixedType:
                     return QVariant(QFixed::fromFixed(readValue<quint32>(tagPtr)).toReal());
                 case BitFieldType:
                     return QVariant(QByteArray(reinterpret_cast<const char *>(tagPtr), length));
             }
             return QVariant();
         } else if (tag == Tag_EndOfHeader) {
             break;
         }
         tagPtr += length;
     }
 
     return QVariant();
 }

◆ faceId()

FaceId QFontEngineQPA::faceId ( ) const

inlinevirtual

Reimplemented from QFontEngine.

Definition at line 165 of file qfontengine_qpa_p.h.

165 { return face_id; }

QFontEngineQPA::face_id

FaceId face_id

Definition: qfontengine_qpa_p.h:215

◆ findGlyph()

const QFontEngineQPA::Glyph * QFontEngineQPA::findGlyph ( glyph_t g ) const

Definition at line 151 of file qfontengine_qpa.cpp.

Referenced by alphaMapForGlyph(), boundingBox(), recalcAdvances(), and stringToCMap().

 {
     if (!g || g >= glyphMapEntries)
         return 0;
     const quint32 *gmapPtr = reinterpret_cast<const quint32 *>(fontData + glyphMapOffset);
     quint32 glyphPos = qFromBigEndian<quint32>(gmapPtr[g]);
     if (glyphPos > glyphDataSize) {
         if (glyphPos == 0xffffffff)
             return 0;
 #if defined(DEBUG_FONTENGINE)
         qDebug() << "glyph" << g << "outside of glyphData, remapping font file";
 #endif
         if (glyphPos > glyphDataSize)
             return 0;
     }
     return reinterpret_cast<const Glyph *>(fontData + glyphDataOffset + glyphPos);
 }

◆ getSfntTableData()

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

virtual

Reimplemented from QFontEngine.

Definition at line 333 of file qfontengine_qpa.cpp.

 {
     Q_UNUSED(tag);
     Q_UNUSED(buffer);
     *length = 0;
     return false;
 }

◆ glyphCount()

virtual int QFontEngineQPA::glyphCount ( ) const

inlinevirtual

Reimplemented from QFontEngine.

Definition at line 191 of file qfontengine_qpa_p.h.

Referenced by QPAGenerator::writeGMap().

191 { return glyphMapEntries; }

QFontEngineQPA::glyphMapEntries

quint32 glyphMapEntries

Definition: qfontengine_qpa_p.h:208

◆ isValid()

bool QFontEngineQPA::isValid ( ) const

Definition at line 530 of file qfontengine_qpa.cpp.

Referenced by QFontEngineQPA().

 {
     return fontData && dataSize && (cmapOffset || externalCMap)
            && glyphMapOffset && glyphDataOffset && glyphDataSize > 0;
 }

◆ leading()

QFixed QFontEngineQPA::leading ( ) const

virtual

Implements QFontEngine.

Definition at line 472 of file qfontengine_qpa.cpp.

 {
     return QFixed::fromReal(extractHeaderField(fontData, Tag_Leading).value<qreal>());
 }

◆ lineThickness()

QFixed QFontEngineQPA::lineThickness ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 497 of file qfontengine_qpa.cpp.

 {
     return QFixed::fromReal(extractHeaderField(fontData, Tag_LineThickness).value<qreal>());
 }

◆ maxCharWidth()

qreal QFontEngineQPA::maxCharWidth ( ) const

virtual

Implements QFontEngine.

Definition at line 477 of file qfontengine_qpa.cpp.

 {
     return extractHeaderField(fontData, Tag_MaxCharWidth).value<qreal>();
 }

◆ minLeftBearing()

qreal QFontEngineQPA::minLeftBearing ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 482 of file qfontengine_qpa.cpp.

 {
     return extractHeaderField(fontData, Tag_MinLeftBearing).value<qreal>();
 }

◆ minRightBearing()

qreal QFontEngineQPA::minRightBearing ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 487 of file qfontengine_qpa.cpp.

 {
     return extractHeaderField(fontData, Tag_MinRightBearing).value<qreal>();
 }

◆ name()

const char* QFontEngineQPA::name ( ) const

inlinevirtual

Implements QFontEngine.

Definition at line 189 of file qfontengine_qpa_p.h.

189 { return "QPF2"; }

◆ recalcAdvances()

void QFontEngineQPA::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 389 of file qfontengine_qpa.cpp.

Referenced by stringToCMap().

 {
     for (int i = 0; i < glyphs->numGlyphs; ++i) {
         const Glyph *g = findGlyph(glyphs->glyphs[i]);
         if (!g) {
             glyphs->glyphs[i] = 0;
             continue;
         }
         glyphs->advances_x[i] = g->advance;
         glyphs->advances_y[i] = 0;
     }
 }

◆ stringToCMap()

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

virtual

Implements QFontEngine.

Definition at line 341 of file qfontengine_qpa.cpp.

 {
     if (*nglyphs < len) {
         *nglyphs = len;
         return false;
     }
 
 #if defined(DEBUG_FONTENGINE)
     QSet<QChar> seenGlyphs;
 #endif
 
     const uchar *cmap = externalCMap ? externalCMap : (fontData + cmapOffset);
 
     bool mirrored = flags & QTextEngine::RightToLeft;
     int glyph_pos = 0;
     if (symbol) {
         for (int i = 0; i < len; ++i) {
             unsigned int uc = getChar(str, i, len);
             if (mirrored)
                 uc = QChar::mirroredChar(uc);
             glyphs->glyphs[glyph_pos] = getTrueTypeGlyphIndex(cmap, uc);
             if(!glyphs->glyphs[glyph_pos] && uc < 0x100)
                 glyphs->glyphs[glyph_pos] = getTrueTypeGlyphIndex(cmap, uc + 0xf000);
             ++glyph_pos;
         }
     } else {
         for (int i = 0; i < len; ++i) {
             unsigned int uc = getChar(str, i, len);
             if (mirrored)
                 uc = QChar::mirroredChar(uc);
             glyphs->glyphs[glyph_pos] = getTrueTypeGlyphIndex(cmap, uc);
 #if 0 && defined(DEBUG_FONTENGINE)
             QChar c(uc);
             if (!findGlyph(glyphs[glyph_pos].glyph) && !seenGlyphs.contains(c))
                 qDebug() << "glyph for character" << c << '/' << hex << uc << "is" << dec << glyphs[glyph_pos].glyph;
 
             seenGlyphs.insert(c);
 #endif
             ++glyph_pos;
         }
     }
 
     *nglyphs = glyph_pos;
     glyphs->numGlyphs = glyph_pos;
     recalcAdvances(glyphs, flags);
     return true;
 }

◆ type()

QFontEngine::Type QFontEngineQPA::type ( ) const

virtual

Implements QFontEngine.

Definition at line 502 of file qfontengine_qpa.cpp.

 {
     return QFontEngine::QPF2;
 }

◆ underlinePosition()

QFixed QFontEngineQPA::underlinePosition ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 492 of file qfontengine_qpa.cpp.

 {
     return QFixed::fromReal(extractHeaderField(fontData, Tag_UnderlinePosition).value<qreal>());
 }

◆ verifyHeader()

bool QFontEngineQPA::verifyHeader	(	const uchar *	data,
		int	size
	)

static

Definition at line 169 of file qfontengine_qpa.cpp.

Referenced by QFontEngineQPA(), and QPlatformFontDatabase::registerQPF2Font().

 {
     VERIFY(size >= int(sizeof(Header)));
     const Header *header = reinterpret_cast<const Header *>(data);
     if (header->magic[0] != 'Q'
         || header->magic[1] != 'P'
         || header->magic[2] != 'F'
         || header->magic[3] != '2')
         return false;
 
     VERIFY(header->majorVersion <= CurrentMajorVersion);
     const quint16 dataSize = qFromBigEndian<quint16>(header->dataSize);
     VERIFY(size >= int(sizeof(Header)) + dataSize);
 
     const uchar *tagPtr = data + sizeof(Header);
     const uchar *tagEndPtr = tagPtr + dataSize;
     while (tagPtr < tagEndPtr - 3) {
         tagPtr = verifyTag(tagPtr, tagEndPtr);
         VERIFY(tagPtr);
     }
 
     VERIFY(tagPtr <= tagEndPtr);
     return true;
 }

Properties

◆ cmapOffset

quint32 QFontEngineQPA::cmapOffset

private

Definition at line 205 of file qfontengine_qpa_p.h.

Referenced by canRender(), isValid(), QFontEngineQPA(), and stringToCMap().

◆ cmapSize

int QFontEngineQPA::cmapSize

private

Definition at line 206 of file qfontengine_qpa_p.h.

Referenced by QFontEngineQPA().

◆ dataSize

int QFontEngineQPA::dataSize

private

Definition at line 203 of file qfontengine_qpa_p.h.

Referenced by isValid(), QFontEngineQPA(), and verifyHeader().

◆ encodedFileName

QString QFontEngineQPA::encodedFileName

private

Definition at line 212 of file qfontengine_qpa_p.h.

◆ externalCMap

const uchar* QFontEngineQPA::externalCMap

private

Definition at line 204 of file qfontengine_qpa_p.h.

Referenced by canRender(), isValid(), QFontEngineQPA(), and stringToCMap().

◆ face_id

FaceId QFontEngineQPA::face_id

private

Definition at line 215 of file qfontengine_qpa_p.h.

Referenced by QFontEngineQPA().

◆ fontData

const uchar* QFontEngineQPA::fontData

private

Definition at line 202 of file qfontengine_qpa_p.h.

Referenced by ascent(), canRender(), descent(), findGlyph(), isValid(), leading(), lineThickness(), maxCharWidth(), minLeftBearing(), minRightBearing(), QFontEngineQPA(), stringToCMap(), and underlinePosition().

◆ freetypeCMapTable

QByteArray QFontEngineQPA::freetypeCMapTable

private

Definition at line 216 of file qfontengine_qpa_p.h.

◆ glyphDataOffset

quint32 QFontEngineQPA::glyphDataOffset

private

Definition at line 209 of file qfontengine_qpa_p.h.

Referenced by findGlyph(), isValid(), and QFontEngineQPA().

◆ glyphDataSize

quint32 QFontEngineQPA::glyphDataSize

private

Definition at line 210 of file qfontengine_qpa_p.h.

Referenced by findGlyph(), isValid(), and QFontEngineQPA().

◆ glyphMapEntries

quint32 QFontEngineQPA::glyphMapEntries

private

Definition at line 208 of file qfontengine_qpa_p.h.

Referenced by findGlyph(), and QFontEngineQPA().

◆ glyphMapOffset

quint32 QFontEngineQPA::glyphMapOffset

private

Definition at line 207 of file qfontengine_qpa_p.h.

Referenced by findGlyph(), isValid(), and QFontEngineQPA().

◆ internalFileName

QString QFontEngineQPA::internalFileName

private

Definition at line 211 of file qfontengine_qpa_p.h.

◆ kerning_pairs_loaded

bool QFontEngineQPA::kerning_pairs_loaded

mutableprivate

Definition at line 217 of file qfontengine_qpa_p.h.

Referenced by QFontEngineQPA().

◆ readOnly

bool QFontEngineQPA::readOnly

private

Definition at line 213 of file qfontengine_qpa_p.h.

Referenced by QFontEngineQPA().

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

/src/gui/text/qfontengine_qpa_p.h
/src/gui/text/qfontengine_qpa.cpp

Classes

Public Types

Public Functions

Static Public Functions

Properties

Additional Inherited Members

Detailed Description

Enumerations

◆ anonymous enum

◆ BlockTag

◆ GlyphFormat

◆ HeaderTag

◆ TagType

Constructors and Destructors

◆ QFontEngineQPA()

◆ ~QFontEngineQPA()

Functions

◆ addOutlineToPath()

◆ alphaMapForGlyph()

◆ ascent()

◆ boundingBox() [1/2]

◆ boundingBox() [2/2]

◆ canRender()

◆ descent()

◆ extractHeaderField()

◆ faceId()

◆ findGlyph()

◆ getSfntTableData()

◆ glyphCount()

◆ isValid()

◆ leading()

◆ lineThickness()

◆ maxCharWidth()

◆ minLeftBearing()

◆ minRightBearing()

◆ name()

◆ recalcAdvances()

◆ stringToCMap()

◆ type()

◆ underlinePosition()

◆ verifyHeader()

Properties

◆ cmapOffset

◆ cmapSize

◆ dataSize

◆ encodedFileName

◆ externalCMap

◆ face_id

◆ fontData

◆ freetypeCMapTable

◆ glyphDataOffset

◆ glyphDataSize

◆ glyphMapEntries

◆ glyphMapOffset

◆ internalFileName

◆ kerning_pairs_loaded

◆ readOnly