#include <qfontengine_x11_p.h>

Inheritance diagram for QFontEngineXLFD:

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

virtual QImage	alphaMapForGlyph (glyph_t)

virtual QFixed	ascent () 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 QFontEngine::FaceId	faceId () const

XFontStruct *	fontStruct () const

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

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

glyph_t	glyphIndexToFreetypeGlyphIndex (glyph_t g) const

virtual QFixed	leading () const

virtual qreal	maxCharWidth () const

virtual qreal	minLeftBearing () const

virtual qreal	minRightBearing () const

virtual const char *	name () const

FT_Face	non_locked_face () const

QFontEngine::Properties	properties () const

	QFontEngineXLFD (XFontStruct *f, const QByteArray &name, int mib)

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

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

virtual int	synthesized () const

uint	toUnicode (glyph_t g) const

virtual Type	type () const

	~QFontEngineXLFD ()

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

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)

	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 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...

Private Functions
QBitmap	bitmapForGlyphs (const QGlyphLayout &glyphs, const glyph_metrics_t &metrics, QTextItem::RenderFlags flags=0)

Properties
int	_cmap

QTextCodec *	_codec

XFontStruct *	_fs

QByteArray	_name

QFontEngine::FaceId	face_id

QFreetypeFace *	freetype

int	lbearing

int	rbearing

int	synth

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

Warning: This function is not part of the public interface. The font engine for X Logical Font Description (XLFD) fonts, which is for X11 systems without freetype.

Definition at line 82 of file qfontengine_x11_p.h.

Constructors and Destructors

◆ QFontEngineXLFD()

QFontEngineXLFD::QFontEngineXLFD	(	XFontStruct *	f,
		const QByteArray &	name,
		int	mib
	)

Definition at line 323 of file qfontengine_x11.cpp.

     : _fs(fs), _name(name), _codec(0), _cmap(mib)
 {
     if (_cmap) _codec = QTextCodec::codecForMib(_cmap);
 
     cache_cost = (((fs->max_byte1 - fs->min_byte1) *
                    (fs->max_char_or_byte2 - fs->min_char_or_byte2 + 1)) +
                   fs->max_char_or_byte2 - fs->min_char_or_byte2);
     cache_cost = ((fs->max_bounds.ascent + fs->max_bounds.descent) *
                   (fs->max_bounds.width * cache_cost / 8));
     lbearing = SHRT_MIN;
     rbearing = SHRT_MIN;
     face_id.index = -1;
     freetype = 0;
     synth = 0;
 }

◆ ~QFontEngineXLFD()

QFontEngineXLFD::~QFontEngineXLFD ( )

Definition at line 340 of file qfontengine_x11.cpp.

 {
     XFreeFont(QX11Info::display(), _fs);
     _fs = 0;
 #ifndef QT_NO_FREETYPE
     if (freetype)
         freetype->release(face_id);
 #endif
 }

Functions

◆ addOutlineToPath()

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

virtual

Reimplemented from QFontEngine.

Definition at line 667 of file qfontengine_x11.cpp.

 {
     // cannot use QFontEngine::addBitmapFontToPath(), since we don't
     // have direct access to the glyph bitmaps, so we have to draw
     // onto a QBitmap, then convert to QImage, then to path
     glyph_metrics_t metrics = boundingBox(glyphs);
 
     QImage image = bitmapForGlyphs(glyphs, metrics, flags).toImage();
     if (image.isNull())
         return;
 
     image = image.convertToFormat(QImage::Format_Mono);
     const uchar *image_data = image.bits();
     uint bpl = image.bytesPerLine();
     // from qfontengine.cpp
     extern void qt_addBitmapToPath(qreal x0, qreal y0, const uchar *image_data,
                                    int bpl, int w, int h, QPainterPath *path);
     qt_addBitmapToPath(x, y + metrics.y.toReal(), image_data, bpl, image.width(), image.height(), path);
 }

◆ alphaMapForGlyph()

QImage QFontEngineXLFD::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 787 of file qfontengine_x11.cpp.

 {
     glyph_metrics_t metrics = boundingBox(glyph);
 
 /*
     printf("a) w=%.2f, h=%.2f, xoff=%.2f, yoff=%.2f, x=%.2f, y=%.2f\n",
            metrics.width.toReal(),
            metrics.height.toReal(),
            metrics.xoff.toReal(),
            metrics.yoff.toReal(),
            metrics.x.toReal(),
            metrics.y.toReal());
 */
 
     QGlyphLayoutArray<1> glyphs;
     glyphs.glyphs[0] = glyph;
 
     QImage image = bitmapForGlyphs(glyphs, metrics).toImage();
 //image.save(QString::fromLatin1("x11cache-%1.png").arg((int)glyph));
 
     image = image.convertToFormat(QImage::Format_Indexed8);
     QVector<QRgb> colors(256);
     for (int i = 0; i < 256; ++i)
         colors[i] = qRgba(0, 0, 0, i);
     image.setColorTable(colors);
 
     int width = image.width();
     int height = image.height();
     for (int y = 0; y < height; ++y) {
         uchar *bits = image.scanLine(y);
         for (int x = 0; x < width; ++x)
             bits[x] = ~(bits[x]-1);
     }
 
     return image;
 }

◆ ascent()

QFixed QFontEngineXLFD::ascent ( ) const

virtual

Implements QFontEngine.

Definition at line 524 of file qfontengine_x11.cpp.

Referenced by boundingBox().

 {
     return _fs->ascent;
 }

◆ bitmapForGlyphs()

QBitmap QFontEngineXLFD::bitmapForGlyphs	(	const QGlyphLayout &	glyphs,
		const glyph_metrics_t &	metrics,
		QTextItem::RenderFlags	flags = `0`
	)

private

Definition at line 635 of file qfontengine_x11.cpp.

Referenced by addOutlineToPath(), and alphaMapForGlyph().

 {
     int w = metrics.width.toInt();
     int h = metrics.height.toInt();
     if (w <= 0 || h <= 0)
         return QBitmap();
 
     QPixmapData *data = new QX11PixmapData(QPixmapData::BitmapType);
     data->resize(w, h);
     QPixmap bm(data);
     QPainter p(&bm);
     p.fillRect(0, 0, w, h, Qt::color0);
     p.setPen(Qt::color1);
 
     QTextItemInt item;
     item.flags = flags;
     item.ascent = -metrics.y;
     item.descent = metrics.height - item.ascent;
     item.width = metrics.width;
     item.chars = 0;
     item.num_chars = 0;
     item.logClusters = 0;
     item.glyphs = glyphs;
     item.fontEngine = this;
     item.f = 0;
 
     p.drawTextItem(QPointF(-metrics.x.toReal(), item.ascent.toReal()), item);
     p.end();
 
     return QBitmap(bm);
 }

◆ boundingBox() [1/2]

glyph_metrics_t QFontEngineXLFD::boundingBox ( const QGlyphLayout & glyphs )

virtual

Implements QFontEngine.

Definition at line 472 of file qfontengine_x11.cpp.

Referenced by addOutlineToPath(), and alphaMapForGlyph().

 {
     int i;
 
     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;
     QFixed xmax;
     for (i = 0; i < glyphs.numGlyphs; i++) {
         XCharStruct *xcs = charStruct(_fs, glyphs.glyphs[i]);
         if (xcs) {
             QFixed x = overall.xoff + glyphs.offsets[i].x + xcs->lbearing;
             QFixed y = overall.yoff + glyphs.offsets[i].y - xcs->ascent;
             overall.x = qMin(overall.x, x);
             overall.y = qMin(overall.y, y);
             // XCharStruct::rbearing is defined as distance from left edge to rightmost pixel
             xmax = qMax(xmax, overall.xoff + glyphs.offsets[i].x + xcs->rbearing);
             ymax = qMax(ymax, y + xcs->ascent + xcs->descent);
             overall.xoff += glyphs.advances_x[i] + QFixed::fromFixed(glyphs.justifications[i].space_18d6);
         } else {
             QFixed size = _fs->ascent;
             overall.x = qMin(overall.x, overall.xoff);
             overall.y = qMin(overall.y, overall.yoff - size);
             ymax = qMax(ymax, overall.yoff);
             overall.xoff += size;
             xmax = qMax(xmax, overall.xoff);
         }
     }
     overall.height = qMax(overall.height, ymax - overall.y);
     overall.width = xmax - overall.x;
 
     return overall;
 }

◆ boundingBox() [2/2]

glyph_metrics_t QFontEngineXLFD::boundingBox ( glyph_t glyph )

virtual

Implements QFontEngine.

Definition at line 508 of file qfontengine_x11.cpp.

 {
     glyph_metrics_t gm;
     XCharStruct *xcs = charStruct(_fs, glyph);
     if (xcs) {
         // XCharStruct::rbearing is defined as distance from left edge to rightmost pixel
         // XCharStruct::width is defined as the advance
         gm = glyph_metrics_t(xcs->lbearing, -xcs->ascent, xcs->rbearing- xcs->lbearing, xcs->ascent + xcs->descent,
                               xcs->width, 0);
     } else {
         QFixed size = ascent();
         gm = glyph_metrics_t(0, size, size, size, size, 0);
     }
     return gm;
 }

◆ canRender()

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

virtual

Implements QFontEngine.

Definition at line 615 of file qfontengine_x11.cpp.

 {
     QVarLengthGlyphLayoutArray glyphs(len);
     int nglyphs = len;
     if (stringToCMap(string, len, &glyphs, &nglyphs, 0) == false) {
         glyphs.resize(nglyphs);
         stringToCMap(string, len, &glyphs, &nglyphs, 0);
     }
 
     bool allExist = true;
     for (int i = 0; i < nglyphs; i++) {
         if (!glyphs.glyphs[i] || !charStruct(_fs, glyphs.glyphs[i])) {
             allExist = false;
             break;
         }
     }
 
     return allExist;
 }

◆ descent()

QFixed QFontEngineXLFD::descent ( ) const

virtual

Implements QFontEngine.

Definition at line 529 of file qfontengine_x11.cpp.

Referenced by boundingBox().

 {
     return (_fs->descent-1);
 }

◆ faceId()

QFontEngine::FaceId QFontEngineXLFD::faceId ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 687 of file qfontengine_x11.cpp.

 {
 #ifndef QT_NO_FREETYPE
     if (face_id.index == -1) {
         face_id = fontFile(_name, &freetype, &synth);
         if (_codec)
             face_id.encoding = _codec->mibEnum();
         if (freetype) {
             const_cast<QFontEngineXLFD *>(this)->fsType = freetype->fsType();
         } else {
             face_id.index = 0;
             face_id.filename = '-' + QFontEngine::properties().postscriptName;
         }
     }
 #endif
 
     return face_id;
 }

◆ fontStruct()

XFontStruct* QFontEngineXLFD::fontStruct ( ) const

inline

Definition at line 116 of file qfontengine_x11_p.h.

Referenced by QX11PaintEngine::drawXLFD().

117 { return _fs; }

QFontEngineXLFD::_fs

XFontStruct * _fs

Definition: qfontengine_x11_p.h:128

◆ getSfntTableData()

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

virtual

Reimplemented from QFontEngine.

Definition at line 766 of file qfontengine_x11.cpp.

 {
 #ifndef QT_NO_FREETYPE
     if (face_id.index == -1)
         (void)faceId();
     if (!freetype)
         return false;
     return freetype->getSfntTable(tag, buffer, length);
 #else
     Q_UNUSED(tag);
     Q_UNUSED(buffer);
     Q_UNUSED(length);
     return false;
 #endif
 }

◆ getUnscaledGlyph()

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

virtual

Reimplemented from QFontEngine.

Definition at line 718 of file qfontengine_x11.cpp.

 {
     if (face_id.index == -1)
         (void)faceId();
 #ifndef QT_NO_FREETYPE
     if (!freetype)
 #endif
     {
         QFontEngine::getUnscaledGlyph(glyph, path, metrics);
         return;
     }
 
 #ifndef QT_NO_FREETYPE
     freetype->lock();
 
     FT_Face face = freetype->face;
     FT_Set_Char_Size(face, face->units_per_EM << 6, face->units_per_EM << 6, 0, 0);
     freetype->xsize = face->units_per_EM << 6;
     freetype->ysize = face->units_per_EM << 6;
     FT_Set_Transform(face, 0, 0);
     glyph = glyphIndexToFreetypeGlyphIndex(glyph);
     FT_Load_Glyph(face, glyph, FT_LOAD_NO_BITMAP);
 
     int left  = face->glyph->metrics.horiBearingX;
     int right = face->glyph->metrics.horiBearingX + face->glyph->metrics.width;
     int top    = face->glyph->metrics.horiBearingY;
     int bottom = face->glyph->metrics.horiBearingY - face->glyph->metrics.height;
 
     QFixedPoint p;
     p.x = 0;
     p.y = 0;
     metrics->width = QFixed::fromFixed(right-left);
     metrics->height = QFixed::fromFixed(top-bottom);
     metrics->x = QFixed::fromFixed(left);
     metrics->y = QFixed::fromFixed(-top);
     metrics->xoff = QFixed::fromFixed(face->glyph->advance.x);
 
     if (!FT_IS_SCALABLE(freetype->face))
         QFreetypeFace::addBitmapToPath(face->glyph, p, path);
     else
         QFreetypeFace::addGlyphToPath(face, face->glyph, p, path, face->units_per_EM << 6, face->units_per_EM << 6);
 
     FT_Set_Transform(face, &freetype->matrix, 0);
     freetype->unlock();
 #endif // QT_NO_FREETYPE
 }

◆ glyphIndexToFreetypeGlyphIndex()

glyph_t QFontEngineXLFD::glyphIndexToFreetypeGlyphIndex ( glyph_t g ) const

Definition at line 852 of file qfontengine_x11.cpp.

 {
     return FT_Get_Char_Index(freetype->face, toUnicode(g));
 }

◆ leading()

QFixed QFontEngineXLFD::leading ( ) const

virtual

Implements QFontEngine.

Definition at line 534 of file qfontengine_x11.cpp.

 {
     QFixed l = QFixed(qMin<int>(_fs->ascent, _fs->max_bounds.ascent)
                       + qMin<int>(_fs->descent, _fs->max_bounds.descent)) * QFixed::fromReal(0.15);
     return l.ceil();
 }

◆ maxCharWidth()

qreal QFontEngineXLFD::maxCharWidth ( ) const

virtual

Implements QFontEngine.

Definition at line 541 of file qfontengine_x11.cpp.

 {
     return _fs->max_bounds.width;
 }

◆ minLeftBearing()

qreal QFontEngineXLFD::minLeftBearing ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 554 of file qfontengine_x11.cpp.

 {
     if (lbearing == SHRT_MIN) {
         if (_fs->per_char) {
             XCharStruct *cs = _fs->per_char;
             int nc = maxIndex(_fs) + 1;
             int mx = cs->lbearing;
 
             for (int c = 1; c < nc; c++) {
                 // ignore the bearings for characters whose ink is
                 // completely outside the normal bounding box
                 if ((cs[c].lbearing <= 0 && cs[c].rbearing <= 0) ||
                     (cs[c].lbearing >= cs[c].width && cs[c].rbearing >= cs[c].width))
                     continue;
 
                 int nmx = cs[c].lbearing;
 
                 if (nmx < mx)
                     mx = nmx;
             }
 
             ((QFontEngineXLFD *)this)->lbearing = mx;
         } else
             ((QFontEngineXLFD *)this)->lbearing = _fs->min_bounds.lbearing;
     }
     return lbearing;
 }

◆ minRightBearing()

qreal QFontEngineXLFD::minRightBearing ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 582 of file qfontengine_x11.cpp.

 {
     if (rbearing == SHRT_MIN) {
         if (_fs->per_char) {
             XCharStruct *cs = _fs->per_char;
             int nc = maxIndex(_fs) + 1;
             int mx = cs->rbearing;
 
             for (int c = 1; c < nc; c++) {
                 // ignore the bearings for characters whose ink is
                 // completely outside the normal bounding box
                 if ((cs[c].lbearing <= 0 && cs[c].rbearing <= 0) ||
                     (cs[c].lbearing >= cs[c].width && cs[c].rbearing >= cs[c].width))
                     continue;
 
                 int nmx = cs[c].rbearing;
 
                 if (nmx < mx)
                     mx = nmx;
             }
 
             ((QFontEngineXLFD *)this)->rbearing = mx;
         } else
             ((QFontEngineXLFD *)this)->rbearing = _fs->min_bounds.rbearing;
     }
     return rbearing;
 }

◆ name()

const char * QFontEngineXLFD::name ( ) const

virtual

Implements QFontEngine.

Definition at line 610 of file qfontengine_x11.cpp.

 {
     return _name;
 }

◆ non_locked_face()

FT_Face QFontEngineXLFD::non_locked_face ( ) const

Definition at line 826 of file qfontengine_x11.cpp.

Referenced by ft_face(), and qt_x11_set_fallback_font_family().

 {
     return freetype ? freetype->face : 0;
 }

◆ properties()

QFontEngine::Properties QFontEngineXLFD::properties ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 706 of file qfontengine_x11.cpp.

 {
     if (face_id.index == -1)
         (void)faceId();
 
 #ifndef QT_NO_FREETYPE
     if (freetype)
         return freetype->properties();
 #endif
     return QFontEngine::properties();
 }

◆ recalcAdvances()

void QFontEngineXLFD::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 426 of file qfontengine_x11.cpp.

Referenced by stringToCMap().

 {
     int i = glyphs->numGlyphs;
     XCharStruct *xcs;
     // inlined for better performance
     if (!_fs->per_char) {
         xcs = &_fs->min_bounds;
         while (i != 0) {
             --i;
             const unsigned char r = glyphs->glyphs[i] >> 8;
             const unsigned char c = glyphs->glyphs[i] & 0xff;
             if (r >= _fs->min_byte1 &&
                 r <= _fs->max_byte1 &&
                 c >= _fs->min_char_or_byte2 &&
                 c <= _fs->max_char_or_byte2) {
                 glyphs->advances_x[i] = xcs->width;
             } else {
                 glyphs->glyphs[i] = 0;
             }
         }
     }
     else if (!_fs->max_byte1) {
         XCharStruct *base = _fs->per_char - _fs->min_char_or_byte2;
         while (i != 0) {
             unsigned int gl = glyphs->glyphs[--i];
             xcs = (gl >= _fs->min_char_or_byte2 && gl <= _fs->max_char_or_byte2) ?
                   base + gl : 0;
             if (!xcs || (!xcs->width && !xcs->ascent && !xcs->descent)) {
                 glyphs->glyphs[i] = 0;
             } else {
                 glyphs->advances_x[i] = xcs->width;
             }
         }
     }
     else {
         while (i != 0) {
             xcs = charStruct(_fs, glyphs->glyphs[--i]);
             if (!xcs) {
                 glyphs->glyphs[i] = 0;
             } else {
                 glyphs->advances_x[i] = xcs->width;
             }
         }
     }
 }

◆ stringToCMap()

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

virtual

Implements QFontEngine.

Definition at line 350 of file qfontengine_x11.cpp.

Referenced by canRender().

 {
     if (*nglyphs < len) {
         *nglyphs = len;
         return false;
     }
 
     // filter out surrogates, we can't handle them anyway with XLFD fonts
     QVarLengthArray<ushort> _s(len);
     QChar *str = (QChar *)_s.data();
     for (int i = 0; i < len; ++i) {
         if (s[i].isHighSurrogate() && i < len-1 && s[i+1].isLowSurrogate()) {
             *str = QChar();
             ++i;
         } else {
             *str = s[i];
         }
         ++str;
     }
 
     len = str - (QChar *)_s.data();
     str = (QChar *)_s.data();
 
     bool mirrored = flags & QTextEngine::RightToLeft;
     if (_codec) {
         bool haveNbsp = false;
         for (int i = 0; i < len; i++)
             if (str[i].unicode() == 0xa0) {
                 haveNbsp = true;
                 break;
             }
 
         QVarLengthArray<unsigned short> ch(len);
         QChar *chars = (QChar *)ch.data();
         if (haveNbsp || mirrored) {
             for (int i = 0; i < len; i++)
                 chars[i] = (str[i].unicode() == 0xa0 ? 0x20 :
                             (mirrored ? QChar::mirroredChar(str[i].unicode()) : str[i].unicode()));
         } else {
             for (int i = 0; i < len; i++)
                 chars[i] = str[i].unicode();
         }
         QTextCodec::ConverterState state;
         state.flags = QTextCodec::ConvertInvalidToNull;
         QByteArray ba = _codec->fromUnicode(chars, len, &state);
         if (ba.length() == 2*len) {
             // double byte encoding
             const uchar *data = (const uchar *)ba.constData();
             for (int i = 0; i < len; i++) {
                 glyphs->glyphs[i] = ((ushort)data[0] << 8) + data[1];
                 data += 2;
             }
         } else {
             const uchar *data = (const uchar *)ba.constData();
             for (int i = 0; i < len; i++)
                 glyphs->glyphs[i] = (ushort)data[i];
         }
     } else {
         int i = len;
         const QChar *c = str + len;
         if (mirrored) {
             while (c != str)
                 glyphs->glyphs[--i] = (--c)->unicode() == 0xa0 ? 0x20 : QChar::mirroredChar(c->unicode());
         } else {
             while (c != str)
                 glyphs->glyphs[--i] = (--c)->unicode() == 0xa0 ? 0x20 : c->unicode();
         }
     }
     *nglyphs = len;
     glyphs->numGlyphs = len;
 
     if (!(flags & QTextEngine::GlyphIndicesOnly))
         recalcAdvances(glyphs, flags);
     return true;
 }

◆ synthesized()

int QFontEngineXLFD::synthesized ( ) const

virtual

Reimplemented from QFontEngine.

Definition at line 782 of file qfontengine_x11.cpp.

 {
     return synth;
 }

◆ toUnicode()

uint QFontEngineXLFD::toUnicode ( glyph_t g ) const

Definition at line 831 of file qfontengine_x11.cpp.

Referenced by glyphIndexToFreetypeGlyphIndex().

 {
     if (_codec) {
         QTextCodec::ConverterState state;
         state.flags = QTextCodec::ConvertInvalidToNull;
         uchar data[2];
         int l = 1;
         if (g > 255) {
             data[0] = (g >> 8);
             data[1] = (g & 255);
             l = 2;
         } else {
             data[0] = g;
         }
         QString s = _codec->toUnicode((char *)data, l, &state);
         Q_ASSERT(s.length() == 1);
         g = s.at(0).unicode();
     }
     return g;
 }

◆ type()

virtual Type QFontEngineXLFD::type ( ) const

inlinevirtual

Implements QFontEngine.

Definition at line 110 of file qfontengine_x11_p.h.

111 { return QFontEngine::XLFD; }

QFontEngine::XLFD

Definition: qfontengine_p.h:103

Properties

◆ _cmap

int QFontEngineXLFD::_cmap

private

Definition at line 131 of file qfontengine_x11_p.h.

Referenced by QFontEngineXLFD().

◆ _codec

QTextCodec* QFontEngineXLFD::_codec

private

Definition at line 130 of file qfontengine_x11_p.h.

Referenced by faceId(), QFontEngineXLFD(), stringToCMap(), and toUnicode().

◆ _fs

XFontStruct* QFontEngineXLFD::_fs

private

Definition at line 128 of file qfontengine_x11_p.h.

Referenced by ascent(), boundingBox(), canRender(), descent(), leading(), maxCharWidth(), minLeftBearing(), minRightBearing(), recalcAdvances(), and ~QFontEngineXLFD().

◆ _name

QByteArray QFontEngineXLFD::_name

private

Definition at line 129 of file qfontengine_x11_p.h.

Referenced by faceId(), and name().

◆ face_id

QFontEngine::FaceId QFontEngineXLFD::face_id

mutableprivate

Definition at line 133 of file qfontengine_x11_p.h.

Referenced by faceId(), getSfntTableData(), getUnscaledGlyph(), properties(), QFontEngineXLFD(), and ~QFontEngineXLFD().

◆ freetype

QFreetypeFace* QFontEngineXLFD::freetype

mutableprivate

Definition at line 134 of file qfontengine_x11_p.h.

Referenced by faceId(), glyphIndexToFreetypeGlyphIndex(), non_locked_face(), QFontEngineXLFD(), and ~QFontEngineXLFD().

◆ lbearing

int QFontEngineXLFD::lbearing

private

Definition at line 132 of file qfontengine_x11_p.h.

Referenced by minLeftBearing(), minRightBearing(), and QFontEngineXLFD().

◆ rbearing

int QFontEngineXLFD::rbearing

private

Definition at line 132 of file qfontengine_x11_p.h.

Referenced by minLeftBearing(), minRightBearing(), and QFontEngineXLFD().

◆ synth

int QFontEngineXLFD::synth

mutableprivate

Definition at line 135 of file qfontengine_x11_p.h.

Referenced by faceId(), QFontEngineXLFD(), and synthesized().

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

/src/gui/text/qfontengine_x11_p.h
/src/gui/text/qfontengine_x11.cpp

Public Functions

Private Functions

Properties

Additional Inherited Members

Detailed Description

Constructors and Destructors

◆ QFontEngineXLFD()

◆ ~QFontEngineXLFD()

Functions

◆ addOutlineToPath()

◆ alphaMapForGlyph()

◆ ascent()

◆ bitmapForGlyphs()

◆ boundingBox() [1/2]

◆ boundingBox() [2/2]

◆ canRender()

◆ descent()

◆ faceId()

◆ fontStruct()

◆ getSfntTableData()

◆ getUnscaledGlyph()

◆ glyphIndexToFreetypeGlyphIndex()

◆ leading()

◆ maxCharWidth()

◆ minLeftBearing()

◆ minRightBearing()

◆ name()

◆ non_locked_face()

◆ properties()

◆ recalcAdvances()

◆ stringToCMap()

◆ synthesized()

◆ toUnicode()

◆ type()

Properties

◆ _cmap

◆ _codec

◆ _fs

◆ _name

◆ face_id

◆ freetype

◆ lbearing

◆ rbearing

◆ synth