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QFontEngineMulti Class Reference

#include <qfontengine_p.h>

Inheritance diagram for QFontEngineMulti:
Collaboration diagram for QFontEngineMulti:

Public Member Functions

 QFontEngineMulti (QFontEngine *engine, int script, const QStringList &fallbackFamilies=QStringList())
 ~QFontEngineMulti ()
virtual int glyphCount () const override
virtual glyph_t glyphIndex (uint ucs4) const override
virtual int stringToCMap (const QChar *str, int lenlen, QGlyphLayout *glyphs, int *nglyphs, ShaperFlags flagsflags) const override
virtual glyph_metrics_t boundingBox (const QGlyphLayout &glyphs) override
virtual glyph_metrics_t boundingBox (glyph_t glyph) override
virtual void recalcAdvances (QGlyphLayout *, ShaperFlags) const override
virtual void doKerning (QGlyphLayout *, ShaperFlags) const override
virtual void addOutlineToPath (qreal, qreal, const QGlyphLayout &, QPainterPath *, QTextItem::RenderFlags flagsflags) override
virtual void getGlyphBearings (glyph_t glyph, qreal *leftBearing=nullptr, qreal *rightBearing=nullptr) override
virtual QFixed emSquareSize () const override
virtual QFixed ascent () const override
virtual QFixed capHeight () const override
virtual QFixed descent () const override
virtual QFixed leading () const override
virtual QFixed xHeight () const override
virtual QFixed averageCharWidth () const override
virtual QImage alphaMapForGlyph (glyph_t) override
virtual QImage alphaMapForGlyph (glyph_t glyph, const QFixedPoint &subPixelPosition) override
virtual QImage alphaMapForGlyph (glyph_t, const QTransform &tt) override
virtual QImage alphaMapForGlyph (glyph_t, const QFixedPoint &subPixelPosition, const QTransform &tt) override
virtual QImage alphaRGBMapForGlyph (glyph_t, const QFixedPoint &subPixelPosition, const QTransform &tt) override
virtual QFixed lineThickness () const override
virtual QFixed underlinePosition () const override
virtual qreal maxCharWidth () const override
virtual qreal minLeftBearing () const override
virtual qreal minRightBearing () const override
virtual QList< QFontVariableAxis > variableAxes () const override
virtual bool canRender (const QChar *stringstring, int lenlen) const override
QString glyphName (glyph_t glyph) const override
glyph_t findGlyph (QLatin1StringView namename) const override
int fallbackFamilyCount () const
QString fallbackFamilyAt (int at) const
void setFallbackFamiliesList (const QStringList &fallbackFamilies)
QFontEngine * engine (int at) const
void ensureEngineAt (int at)
Public Member Functions inherited from QFontEngine
virtual ~QFontEngine ()
Type type () const
virtual Properties properties () const
virtual void getUnscaledGlyph (glyph_t glyph, QPainterPath *pathpath, glyph_metrics_t *metricsmetrics)
QByteArray getSfntTable (uint tag) const
virtual bool getSfntTableData (uint tag, uchar *bufferbuffer, uint *lengthlength) const
virtual FaceId faceId () const
virtual int synthesized () const
bool supportsSubPixelPositions () const
virtual bool supportsHorizontalSubPixelPositions () const
virtual bool supportsVerticalSubPixelPositions () const
virtual QFixedPoint subPixelPositionFor (const QFixedPoint &position) const
QFixed subPixelPositionForX (QFixed xx) const
bool preferTypoLineMetrics () const
bool isColorFont () const
virtual void addGlyphsToPath (glyph_t *glyphs, QFixedPoint *positions, int nglyphs, QPainterPath *pathpath, QTextItem::RenderFlags flagsflags)
void getGlyphPositions (const QGlyphLayout &glyphs, const QTransform &matrixmatrix, QTextItem::RenderFlags flagsflags, QVarLengthArray< glyph_t > &glyphs_out, QVarLengthArray< QFixedPoint > &positions)
void addBitmapFontToPath (qreal xx, qreal yy, const QGlyphLayout &, QPainterPath *, QTextItem::RenderFlags)
virtual QImage bitmapForGlyph (glyph_t, const QFixedPoint &subPixelPosition, const QTransform &tt, const QColor &colorcolor=QColor())
QImage renderedPathForGlyph (glyph_t glyph, const QColor &colorcolor)
qreal effectivePixelSizeSquared (const QTransform &transformtransform) const
bool glyphTransformExceedsLimit (glyph_t glyph, const QTransform &transformtransform)
virtual Glyph * glyphData (glyph_t glyph, const QFixedPoint &subPixelPosition, GlyphFormat neededFormat, const QTransform &tt)
virtual bool hasInternalCaching () const
virtual glyph_metrics_t alphaMapBoundingBox (glyph_t glyph, const QFixedPoint &, const QTransform &matrixmatrix, GlyphFormat)
virtual void removeGlyphFromCache (glyph_t)
virtual glyph_metrics_t boundingBox (glyph_t glyph, const QTransform &matrixmatrix)
glyph_metrics_t tightBoundingBox (const QGlyphLayout &glyphs, QTextItem::RenderFlags flagsflags)
bool canRender (uint ucs4) const
virtual bool supportsTransformation (const QTransform &transformtransform) const
virtual int glyphMargin (GlyphFormat formatformat)
bool hasHinting () const
virtual QFontEngine * cloneWithSize (qreal) const
virtual Qt::HANDLE handle () const
void * harfbuzzFont () const
void * harfbuzzFace () const
bool supportsScript (QChar::Script script) const
virtual int getPointInOutline (glyph_t glyph, int flagsflags, quint32 point, QFixed *xpos, QFixed *ypos, quint32 *nPoints)
void clearGlyphCache (const void *keykey)
void setGlyphCache (const void *keykey, QFontEngineGlyphCache *datadata)
QFontEngineGlyphCache * glyphCache (const void *keykey, GlyphFormat formatformat, const QTransform &transformtransform, const QColor &colorcolor=QColor()) const
virtual bool hasUnreliableGlyphOutline () const
virtual bool expectsGammaCorrectedBlending (QFontEngine::GlyphFormat formatformat) const
virtual void setDefaultHintStyle (HintStyle)
void loadKerningPairs (QFixed scalingFactor)

Static Public Member Functions

static uchar highByte (glyph_t glyph)
static QFontEngine * createMultiFontEngine (QFontEngine *fe, int script)
Static Public Member Functions inherited from QFontEngine
static bool isIgnorableChar (char32_t ucs4)
static int maxCachedGlyphSize ()
static constexpr int maxColrv1NestingDepth ()
static bool glyphBoundingBoxExceedsLimit (qreal glyphWidth, qreal glyphHeight, qreal effectivePixelSizeSquared)
static bool scriptRequiresOpenType (QChar::Script script)
static const uchar * getCMap (const uchar *tabletable, uint tableSize, bool *isSymbolFont, int *cmapSize)
static quint32 getTrueTypeGlyphIndex (const uchar *cmap, int cmapSize, uint unicode)
static QByteArray convertToPostscriptFontFamilyName (const QByteArray &fontFamily)
static bool disableEmojiSegmenter ()
static constexpr qsizetype maximumEngineCount ()

Protected Member Functions

virtual void ensureFallbackFamiliesQueried ()
virtual bool shouldLoadFontEngineForCharacter (int at, uint ucs4) const
virtual QFontEngine * loadEngine (int at)
Protected Member Functions inherited from QFontEngine
 QFontEngine (Type typetype)
QFixed firstLeftBearing (const QGlyphLayout &glyphs)
QFixed lastRightBearing (const QGlyphLayout &glyphs)
QFixed calculatedCapHeight () const
virtual void initializeHeightMetrics () const
bool processHheaTable () const
bool processOS2Table () const

Additional Inherited Members

Public Types inherited from QFontEngine
enum  Type {
  Box , Multi , Win , Mac ,
  Freetype , QPF1 , QPF2 , Proxy ,
  DirectWrite , TestFontEngine = 0x1000
}
enum  GlyphFormat {
  Format_None , Format_Render = Format_None , Format_Mono , Format_A8 ,
  Format_A32 , Format_ARGB
}
enum  ShaperFlag { DesignMetrics = 0x0002 , GlyphIndicesOnly = 0x0004 , FullStringFallback = 0x008 }
enum  SynthesizedFlags { SynthesizedItalic = 0x1 , SynthesizedBold = 0x2 , SynthesizedStretch = 0x4 }
enum  HintStyle {
  HintUnset = -1 , HintNone , HintLight , HintMedium ,
  HintFull
}
enum  SubpixelAntialiasingType {
  Subpixel_Unset = -1 , Subpixel_None , Subpixel_RGB , Subpixel_BGR ,
  Subpixel_VRGB , Subpixel_VBGR
}
Public Attributes inherited from QFontEngine
QAtomicInt ref
QFontDef fontDef
Holder font_
Holder face_
struct QFontEngine::FaceData faceData
uint cache_cost
uint fsType: 16
bool symbol
bool isSmoothlyScalable
QList< KernPair > kerning_pairs
GlyphFormat glyphFormat
int m_subPixelPositionCount
Protected Attributes inherited from QFontEngine
QFixed m_ascent
QFixed m_descent
QFixed m_leading
bool m_heightMetricsQueried

Detailed Description

Definition at line 471 of file qfontengine_p.h.

Constructor & Destructor Documentation

◆ QFontEngineMulti()

QFontEngineMulti::QFontEngineMulti ( QFontEngine * engine,
int script,
const QStringList & fallbackFamilies = QStringList() )
explicit

Definition at line 1980 of file qfontengine.cpp.

◆ ~QFontEngineMulti()

QFontEngineMulti::~QFontEngineMulti ( )

Definition at line 2002 of file qfontengine.cpp.

Member Function Documentation

◆ addOutlineToPath()

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

Reimplemented from QFontEngine.

Definition at line 2399 of file qfontengine.cpp.

◆ alphaMapForGlyph() [1/4]

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

Reimplemented from QFontEngine.

Definition at line 2634 of file qfontengine.cpp.

◆ alphaMapForGlyph() [2/4]

QImage QFontEngineMulti::alphaMapForGlyph ( glyph_t glyph)
overridevirtual

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 2628 of file qfontengine.cpp.

◆ alphaMapForGlyph() [3/4]

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

Reimplemented from QFontEngine.

Definition at line 2646 of file qfontengine.cpp.

◆ alphaMapForGlyph() [4/4]

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

Reimplemented from QFontEngine.

Definition at line 2640 of file qfontengine.cpp.

◆ alphaRGBMapForGlyph()

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

Reimplemented from QFontEngine.

Definition at line 2654 of file qfontengine.cpp.

◆ ascent()

QFixed QFontEngineMulti::ascent ( ) const
overridevirtual

Reimplemented from QFontEngine.

Definition at line 2553 of file qfontengine.cpp.

◆ averageCharWidth()

QFixed QFontEngineMulti::averageCharWidth ( ) const
overridevirtual

Reimplemented from QFontEngine.

Definition at line 2572 of file qfontengine.cpp.

◆ boundingBox() [1/2]

glyph_metrics_t QFontEngineMulti::boundingBox ( const QGlyphLayout & glyphs)
overridevirtual

Reimplemented from QFontEngine.

Definition at line 2329 of file qfontengine.cpp.

◆ boundingBox() [2/2]

glyph_metrics_t QFontEngineMulti::boundingBox ( glyph_t glyph)
overridevirtual

Implements QFontEngine.

Definition at line 2544 of file qfontengine.cpp.

◆ canRender()

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

Reimplemented from QFontEngine.

Definition at line 2602 of file qfontengine.cpp.

◆ capHeight()

QFixed QFontEngineMulti::capHeight ( ) const
overridevirtual

Implements QFontEngine.

Definition at line 2556 of file qfontengine.cpp.

◆ createMultiFontEngine()

QFontEngine * QFontEngineMulti::createMultiFontEngine ( QFontEngine * fe,
int script )
static

Definition at line 2675 of file qfontengine.cpp.

◆ descent()

QFixed QFontEngineMulti::descent ( ) const
overridevirtual

Reimplemented from QFontEngine.

Definition at line 2559 of file qfontengine.cpp.

◆ doKerning()

void QFontEngineMulti::doKerning ( QGlyphLayout * ,
ShaperFlags  ) const
overridevirtual

Reimplemented from QFontEngine.

Definition at line 2501 of file qfontengine.cpp.

◆ emSquareSize()

QFixed QFontEngineMulti::emSquareSize ( ) const
overridevirtual

Reimplemented from QFontEngine.

Definition at line 2550 of file qfontengine.cpp.

◆ engine()

QFontEngine * QFontEngineMulti::engine ( int at) const
inline

Definition at line 521 of file qfontengine_p.h.

◆ ensureEngineAt()

void QFontEngineMulti::ensureEngineAt ( int at)

Definition at line 2043 of file qfontengine.cpp.

◆ ensureFallbackFamiliesQueried()

void QFontEngineMulti::ensureFallbackFamiliesQueried ( )
protectedvirtual

Definition at line 2013 of file qfontengine.cpp.

◆ fallbackFamilyAt()

QString QFontEngineMulti::fallbackFamilyAt ( int at) const
inline

Definition at line 515 of file qfontengine_p.h.

◆ fallbackFamilyCount()

int QFontEngineMulti::fallbackFamilyCount ( ) const
inline

Definition at line 514 of file qfontengine_p.h.

◆ findGlyph()

glyph_t QFontEngineMulti::findGlyph ( QLatin1StringView name) const
overridevirtual

Reimplemented from QFontEngine.

Definition at line 2121 of file qfontengine.cpp.

◆ getGlyphBearings()

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

Reimplemented from QFontEngine.

Definition at line 2392 of file qfontengine.cpp.

◆ glyphCount()

int QFontEngineMulti::glyphCount ( ) const
overridevirtual

Reimplemented from QFontEngine.

Definition at line 2079 of file qfontengine.cpp.

◆ glyphIndex()

glyph_t QFontEngineMulti::glyphIndex ( uint ucs4) const
overridevirtual

Implements QFontEngine.

Definition at line 2084 of file qfontengine.cpp.

◆ glyphName()

QString QFontEngineMulti::glyphName ( glyph_t glyph) const
overridevirtual

Reimplemented from QFontEngine.

Definition at line 2114 of file qfontengine.cpp.

◆ highByte()

uchar QFontEngineMulti::highByte ( glyph_t glyph)
static

Definition at line 1973 of file qfontengine.cpp.

◆ leading()

QFixed QFontEngineMulti::leading ( ) const
overridevirtual

Reimplemented from QFontEngine.

Definition at line 2562 of file qfontengine.cpp.

◆ lineThickness()

QFixed QFontEngineMulti::lineThickness ( ) const
overridevirtual

Reimplemented from QFontEngine.

Definition at line 2577 of file qfontengine.cpp.

◆ loadEngine()

QFontEngine * QFontEngineMulti::loadEngine ( int at)
protectedvirtual

Definition at line 2058 of file qfontengine.cpp.

◆ maxCharWidth()

qreal QFontEngineMulti::maxCharWidth ( ) const
overridevirtual

Implements QFontEngine.

Definition at line 2587 of file qfontengine.cpp.

◆ minLeftBearing()

qreal QFontEngineMulti::minLeftBearing ( ) const
overridevirtual

Reimplemented from QFontEngine.

Definition at line 2592 of file qfontengine.cpp.

◆ minRightBearing()

qreal QFontEngineMulti::minRightBearing ( ) const
overridevirtual

Reimplemented from QFontEngine.

Definition at line 2597 of file qfontengine.cpp.

◆ recalcAdvances()

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

Reimplemented from QFontEngine.

Definition at line 2458 of file qfontengine.cpp.

◆ setFallbackFamiliesList()

void QFontEngineMulti::setFallbackFamiliesList ( const QStringList & fallbackFamilies)

Definition at line 2024 of file qfontengine.cpp.

◆ shouldLoadFontEngineForCharacter()

bool QFontEngineMulti::shouldLoadFontEngineForCharacter ( int at,
uint ucs4 ) const
protectedvirtual

Reimplemented in QFontEngineMultiFontConfig.

Definition at line 2322 of file qfontengine.cpp.

◆ stringToCMap()

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

Implements QFontEngine.

Definition at line 2126 of file qfontengine.cpp.

◆ underlinePosition()

QFixed QFontEngineMulti::underlinePosition ( ) const
overridevirtual

Reimplemented from QFontEngine.

Definition at line 2582 of file qfontengine.cpp.

◆ variableAxes()

QList< QFontVariableAxis > QFontEngineMulti::variableAxes ( ) const
overridevirtual

Reimplemented from QFontEngine.

Definition at line 2662 of file qfontengine.cpp.

◆ xHeight()

QFixed QFontEngineMulti::xHeight ( ) const
overridevirtual

Reimplemented from QFontEngine.

Definition at line 2567 of file qfontengine.cpp.

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