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Internal/Contributor docs for the Qt SDK. Note: These are NOT official API docs; those are found at https://doc.qt.io/
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QFontEngine Class Referenceabstract

#include <qfontengine_p.h>

Inheritance diagram for QFontEngine:
Collaboration diagram for QFontEngine:

Classes

struct  Glyph
struct  Properties
struct  FaceId
class  Holder
struct  FaceData
struct  KernPair

Public Types

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 Member Functions

virtual ~QFontEngine ()
Type type () const
virtual Properties properties () const
virtual void getUnscaledGlyph (glyph_t glyph, QPainterPath *path, glyph_metrics_t *metrics)
QByteArray getSfntTable (uint tag) const
virtual bool getSfntTableData (uint tag, uchar *buffer, uint *length) 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 x) const
bool preferTypoLineMetrics () const
bool isColorFont () const
virtual QFixed emSquareSize () const
virtual glyph_t glyphIndex (uint ucs4) const =0
virtual int stringToCMap (const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, ShaperFlags flags) const =0
virtual void recalcAdvances (QGlyphLayout *, ShaperFlags) const
virtual void doKerning (QGlyphLayout *, ShaperFlags) const
virtual void addGlyphsToPath (glyph_t *glyphs, QFixedPoint *positions, int nglyphs, QPainterPath *path, QTextItem::RenderFlags flags)
void getGlyphPositions (const QGlyphLayout &glyphs, const QTransform &matrix, QTextItem::RenderFlags flags, QVarLengthArray< glyph_t > &glyphs_out, QVarLengthArray< QFixedPoint > &positions)
virtual void addOutlineToPath (qreal, qreal, const QGlyphLayout &, QPainterPath *, QTextItem::RenderFlags flags)
void addBitmapFontToPath (qreal x, qreal y, const QGlyphLayout &, QPainterPath *, QTextItem::RenderFlags)
virtual QImage alphaMapForGlyph (glyph_t)
virtual QImage alphaMapForGlyph (glyph_t glyph, const QFixedPoint &subPixelPosition)
virtual QImage alphaMapForGlyph (glyph_t, const QTransform &t)
virtual QImage alphaMapForGlyph (glyph_t, const QFixedPoint &subPixelPosition, const QTransform &t)
virtual QImage alphaRGBMapForGlyph (glyph_t, const QFixedPoint &subPixelPosition, const QTransform &t)
virtual QImage bitmapForGlyph (glyph_t, const QFixedPoint &subPixelPosition, const QTransform &t, const QColor &color=QColor())
QImage renderedPathForGlyph (glyph_t glyph, const QColor &color)
virtual Glyph * glyphData (glyph_t glyph, const QFixedPoint &subPixelPosition, GlyphFormat neededFormat, const QTransform &t)
virtual bool hasInternalCaching () const
virtual glyph_metrics_t alphaMapBoundingBox (glyph_t glyph, const QFixedPoint &, const QTransform &matrix, GlyphFormat)
virtual void removeGlyphFromCache (glyph_t)
virtual glyph_metrics_t boundingBox (const QGlyphLayout &glyphs)
virtual glyph_metrics_t boundingBox (glyph_t glyph)=0
virtual glyph_metrics_t boundingBox (glyph_t glyph, const QTransform &matrix)
glyph_metrics_t tightBoundingBox (const QGlyphLayout &glyphs, QTextItem::RenderFlags flags)
virtual QFixed ascent () const
virtual QFixed capHeight () const =0
virtual QFixed descent () const
virtual QFixed leading () const
virtual QFixed xHeight () const
virtual QFixed averageCharWidth () const
virtual QFixed lineThickness () const
virtual QFixed underlinePosition () const
virtual qreal maxCharWidth () const =0
virtual qreal minLeftBearing () const
virtual qreal minRightBearing () const
virtual void getGlyphBearings (glyph_t glyph, qreal *leftBearing=nullptr, qreal *rightBearing=nullptr)
bool canRender (uint ucs4) const
virtual bool canRender (const QChar *str, int len) const
virtual bool supportsTransformation (const QTransform &transform) const
virtual int glyphCount () const
virtual int glyphMargin (GlyphFormat format)
bool hasHinting () const
virtual QFontEngine * cloneWithSize (qreal) const
virtual Qt::HANDLE handle () const
virtual QList< QFontVariableAxis > variableAxes () const
virtual QString glyphName (glyph_t index) const
virtual glyph_t findGlyph (QLatin1StringView name) const
void * harfbuzzFont () const
void * harfbuzzFace () const
bool supportsScript (QChar::Script script) const
virtual int getPointInOutline (glyph_t glyph, int flags, quint32 point, QFixed *xpos, QFixed *ypos, quint32 *nPoints)
void clearGlyphCache (const void *key)
void setGlyphCache (const void *key, QFontEngineGlyphCache *data)
QFontEngineGlyphCache * glyphCache (const void *key, GlyphFormat format, const QTransform &transform, const QColor &color=QColor()) const
virtual bool hasUnreliableGlyphOutline () const
virtual bool expectsGammaCorrectedBlending (QFontEngine::GlyphFormat format) const
virtual void setDefaultHintStyle (HintStyle)
void loadKerningPairs (QFixed scalingFactor)

Static Public Member Functions

static bool isIgnorableChar (char32_t ucs4)
static int maxCachedGlyphSize ()
static bool scriptRequiresOpenType (QChar::Script script)
static const uchar * getCMap (const uchar *table, 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 ()

Public Attributes

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 Member Functions

 QFontEngine (Type type)
QFixed firstLeftBearing (const QGlyphLayout &glyphs)
QFixed lastRightBearing (const QGlyphLayout &glyphs)
QFixed calculatedCapHeight () const
virtual void initializeHeightMetrics () const
bool processHheaTable () const
bool processOS2Table () const

Protected Attributes

QFixed m_ascent
QFixed m_descent
QFixed m_leading
bool m_heightMetricsQueried

Detailed Description

Definition at line 47 of file qfontengine_p.h.

Member Enumeration Documentation

◆ GlyphFormat

enum QFontEngine::GlyphFormat
Enumerator
Format_None 
Format_Render 
Format_Mono 
Format_A8 
Format_A32 
Format_ARGB 

Definition at line 71 of file qfontengine_p.h.

◆ HintStyle

enum QFontEngine::HintStyle
Enumerator
HintUnset 
HintNone 
HintLight 
HintMedium 
HintFull 

Definition at line 271 of file qfontengine_p.h.

◆ ShaperFlag

enum QFontEngine::ShaperFlag
Enumerator
DesignMetrics 
GlyphIndicesOnly 
FullStringFallback 

Definition at line 80 of file qfontengine_p.h.

◆ SubpixelAntialiasingType

enum QFontEngine::SubpixelAntialiasingType
Enumerator
Subpixel_Unset 
Subpixel_None 
Subpixel_RGB 
Subpixel_BGR 
Subpixel_VRGB 
Subpixel_VBGR 

Definition at line 280 of file qfontengine_p.h.

◆ SynthesizedFlags

enum QFontEngine::SynthesizedFlags
Enumerator
SynthesizedItalic 
SynthesizedBold 
SynthesizedStretch 

Definition at line 136 of file qfontengine_p.h.

◆ Type

enum QFontEngine::Type
Enumerator
Box 
Multi 
Win 
Mac 
Freetype 
QPF1 
QPF2 
Proxy 
DirectWrite 
TestFontEngine 

Definition at line 50 of file qfontengine_p.h.

Constructor & Destructor Documentation

◆ ~QFontEngine()

QFontEngine::~QFontEngine ( )
virtual

Definition at line 136 of file qfontengine.cpp.

◆ QFontEngine()

QFontEngine::QFontEngine ( Type type)
explicitprotected

Definition at line 111 of file qfontengine.cpp.

Member Function Documentation

◆ addBitmapFontToPath()

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

Definition at line 780 of file qfontengine.cpp.

◆ addGlyphsToPath()

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

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 829 of file qfontengine.cpp.

◆ addOutlineToPath()

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

Reimplemented in QFontEngineBox, QFontEngineFT, QFontEngineMulti, and QWindowsFontEngine.

Definition at line 673 of file qfontengine.cpp.

◆ alphaMapBoundingBox()

virtual glyph_metrics_t QFontEngine::alphaMapBoundingBox ( glyph_t glyph,
const QFixedPoint & ,
const QTransform & matrix,
GlyphFormat  )
inlinevirtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 199 of file qfontengine_p.h.

◆ alphaMapForGlyph() [1/4]

QImage QFontEngine::alphaMapForGlyph ( glyph_t glyph,
const QFixedPoint & subPixelPosition )
virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QFontEngineMulti, and QWindowsFontEngineDirectWrite.

Definition at line 846 of file qfontengine.cpp.

◆ alphaMapForGlyph() [2/4]

QImage QFontEngine::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 in QFontEngineBox, QFontEngineFT, QFontEngineMulti, and QWindowsFontEngine.

Definition at line 1041 of file qfontengine.cpp.

◆ alphaMapForGlyph() [3/4]

QImage QFontEngine::alphaMapForGlyph ( glyph_t glyph,
const QFixedPoint & subPixelPosition,
const QTransform & t )
virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QFontEngineMulti, and QWindowsFontEngineDirectWrite.

Definition at line 862 of file qfontengine.cpp.

◆ alphaMapForGlyph() [4/4]

QImage QFontEngine::alphaMapForGlyph ( glyph_t glyph,
const QTransform & t )
virtual

Reimplemented in QFontEngineMulti, and QWindowsFontEngine.

Definition at line 852 of file qfontengine.cpp.

◆ alphaRGBMapForGlyph()

QImage QFontEngine::alphaRGBMapForGlyph ( glyph_t glyph,
const QFixedPoint & subPixelPosition,
const QTransform & t )
virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 875 of file qfontengine.cpp.

◆ ascent()

QFixed QFontEngine::ascent ( ) const
virtual

Reimplemented in QFontEngineBox, and QFontEngineMulti.

Definition at line 519 of file qfontengine.cpp.

◆ averageCharWidth()

QFixed QFontEngine::averageCharWidth ( ) const
virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QFontEngineMulti, and QWindowsFontEngine.

Definition at line 251 of file qfontengine.cpp.

◆ bitmapForGlyph()

QImage QFontEngine::bitmapForGlyph ( glyph_t ,
const QFixedPoint & subPixelPosition,
const QTransform & t,
const QColor & color = QColor() )
virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, and QWindowsFontEngineDirectWrite.

Definition at line 892 of file qfontengine.cpp.

◆ boundingBox() [1/3]

glyph_metrics_t QFontEngine::boundingBox ( const QGlyphLayout & glyphs)
virtual

Reimplemented in QFontEngineBox, QFontEngineFT, QFontEngineMulti, and QWindowsFontEngineDirectWrite.

Definition at line 617 of file qfontengine.cpp.

◆ boundingBox() [2/3]

virtual glyph_metrics_t QFontEngine::boundingBox ( glyph_t glyph)
pure virtual

Implemented in QCoreTextFontEngine, QFontEngineBox, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

◆ boundingBox() [3/3]

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

Reimplemented in QFontEngineFT, and QWindowsFontEngine.

Definition at line 227 of file qfontengine.cpp.

◆ calculatedCapHeight()

QFixed QFontEngine::calculatedCapHeight ( ) const
protected

Definition at line 237 of file qfontengine.cpp.

◆ canRender() [1/2]

bool QFontEngine::canRender ( const QChar * str,
int len ) const
virtual

Reimplemented in QCoreTextFontEngine, QFontEngineBox, and QFontEngineMulti.

Definition at line 216 of file qfontengine.cpp.

◆ canRender() [2/2]

bool QFontEngine::canRender ( uint ucs4) const
inline

Definition at line 227 of file qfontengine_p.h.

◆ capHeight()

virtual QFixed QFontEngine::capHeight ( ) const
pure virtual

Implemented in QCoreTextFontEngine, QFontEngineBox, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

◆ clearGlyphCache()

void QFontEngine::clearGlyphCache ( const void * key)

Definition at line 1118 of file qfontengine.cpp.

◆ cloneWithSize()

virtual QFontEngine * QFontEngine::cloneWithSize ( qreal ) const
inlinevirtual

Reimplemented in QCoreTextFontEngine, QCoreTextRawFontEngine, QCoreTextRawFontEngine, QFontEngineBox, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 236 of file qfontengine_p.h.

◆ convertToPostscriptFontFamilyName()

QByteArray QFontEngine::convertToPostscriptFontFamilyName ( const QByteArray & fontFamily)
static

Definition at line 1628 of file qfontengine.cpp.

◆ descent()

QFixed QFontEngine::descent ( ) const
virtual

Reimplemented in QFontEngineBox, and QFontEngineMulti.

Definition at line 527 of file qfontengine.cpp.

◆ disableEmojiSegmenter()

bool QFontEngine::disableEmojiSegmenter ( )
static

Definition at line 1700 of file qfontengine.cpp.

◆ doKerning()

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

Reimplemented in QCoreTextFontEngine, QFontEngineFT, and QFontEngineMulti.

Definition at line 1184 of file qfontengine.cpp.

◆ emSquareSize()

QFixed QFontEngine::emSquareSize ( ) const
virtual

Reimplemented in QCoreTextFontEngine, QFontEngineBox, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 513 of file qfontengine.cpp.

◆ expectsGammaCorrectedBlending()

bool QFontEngine::expectsGammaCorrectedBlending ( QFontEngine::GlyphFormat format) const
virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, and QWindowsFontEngineDirectWrite.

Definition at line 263 of file qfontengine.cpp.

◆ faceId()

virtual FaceId QFontEngine::faceId ( ) const
inlinevirtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 135 of file qfontengine_p.h.

◆ findGlyph()

glyph_t QFontEngine::findGlyph ( QLatin1StringView name) const
virtual

Reimplemented in QCoreTextFontEngine, and QFontEngineMulti.

Definition at line 970 of file qfontengine.cpp.

◆ firstLeftBearing()

QFixed QFontEngine::firstLeftBearing ( const QGlyphLayout & glyphs)
protected

Definition at line 1654 of file qfontengine.cpp.

◆ getCMap()

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

Definition at line 1335 of file qfontengine.cpp.

◆ getGlyphBearings()

void QFontEngine::getGlyphBearings ( glyph_t glyph,
qreal * leftBearing = nullptr,
qreal * rightBearing = nullptr )
virtual

Reimplemented in QFontEngineMulti, and QWindowsFontEngine.

Definition at line 387 of file qfontengine.cpp.

◆ getGlyphPositions()

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

Definition at line 269 of file qfontengine.cpp.

◆ getPointInOutline()

int QFontEngine::getPointInOutline ( glyph_t glyph,
int flags,
quint32 point,
QFixed * xpos,
QFixed * ypos,
quint32 * nPoints )
virtual

Reimplemented in QFontEngineFT.

Definition at line 68 of file qfontengine.cpp.

◆ getSfntTable()

QByteArray QFontEngine::getSfntTable ( uint tag) const

Definition at line 1106 of file qfontengine.cpp.

◆ getSfntTableData()

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

Returns true if the font table idetified by tag exists in the font; returns false otherwise.

If buffer is \nullptr, stores the size of the buffer required for the font table data, in bytes, in length. If buffer is not \nullptr and the capacity of the buffer, passed in length, is sufficient to store the font table data, also copies the font table data to buffer.

Note: returning false when the font table exists could lead to an undefined behavior.

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 1098 of file qfontengine.cpp.

◆ getTrueTypeGlyphIndex()

quint32 QFontEngine::getTrueTypeGlyphIndex ( const uchar * cmap,
int cmapSize,
uint unicode )
static

Definition at line 1493 of file qfontengine.cpp.

◆ getUnscaledGlyph()

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

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 1077 of file qfontengine.cpp.

◆ glyphCache()

QFontEngineGlyphCache * QFontEngine::glyphCache ( const void * key,
GlyphFormat format,
const QTransform & transform,
const QColor & color = QColor() ) const

Definition at line 1144 of file qfontengine.cpp.

◆ glyphCount()

int QFontEngine::glyphCount ( ) const
virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, and QFontEngineMulti.

Definition at line 1316 of file qfontengine.cpp.

◆ glyphData()

QFontEngine::Glyph * QFontEngine::glyphData ( glyph_t glyph,
const QFixedPoint & subPixelPosition,
QFontEngine::GlyphFormat neededFormat,
const QTransform & t )
virtual

Reimplemented in QFontEngineFT.

Definition at line 919 of file qfontengine.cpp.

◆ glyphIndex()

virtual glyph_t QFontEngine::glyphIndex ( uint ucs4) const
pure virtual

Implemented in QCoreTextFontEngine, QFontEngineBox, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

◆ glyphMargin()

virtual int QFontEngine::glyphMargin ( GlyphFormat format)
inlinevirtual

Reimplemented in QCoreTextFontEngine, and QFontEngineFT.

Definition at line 233 of file qfontengine_p.h.

◆ glyphName()

QString QFontEngine::glyphName ( glyph_t index) const
virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, and QFontEngineMulti.

Definition at line 947 of file qfontengine.cpp.

◆ handle()

Qt::HANDLE QFontEngine::handle ( ) const
virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 1330 of file qfontengine.cpp.

◆ harfbuzzFace()

void * QFontEngine::harfbuzzFace ( ) const

Definition at line 172 of file qfontengine.cpp.

◆ harfbuzzFont()

void * QFontEngine::harfbuzzFont ( ) const

Definition at line 162 of file qfontengine.cpp.

◆ hasHinting()

bool QFontEngine::hasHinting ( ) const

Definition at line 1291 of file qfontengine.cpp.

◆ hasInternalCaching()

virtual bool QFontEngine::hasInternalCaching ( ) const
inlinevirtual

Reimplemented in QFontEngineFT.

Definition at line 197 of file qfontengine_p.h.

◆ hasUnreliableGlyphOutline()

bool QFontEngine::hasUnreliableGlyphOutline ( ) const
virtual

Reimplemented in QWindowsFontEngine.

Definition at line 1648 of file qfontengine.cpp.

◆ initializeHeightMetrics()

void QFontEngine::initializeHeightMetrics ( ) const
protectedvirtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 424 of file qfontengine.cpp.

◆ isColorFont()

bool QFontEngine::isColorFont ( ) const
inline

Definition at line 155 of file qfontengine_p.h.

◆ isIgnorableChar()

bool QFontEngine::isIgnorableChar ( char32_t ucs4)
inlinestatic

Definition at line 156 of file qfontengine_p.h.

◆ lastRightBearing()

QFixed QFontEngine::lastRightBearing ( const QGlyphLayout & glyphs)
protected

Definition at line 1665 of file qfontengine.cpp.

◆ leading()

QFixed QFontEngine::leading ( ) const
virtual

Reimplemented in QFontEngineBox, and QFontEngineMulti.

Definition at line 504 of file qfontengine.cpp.

◆ lineThickness()

QFixed QFontEngine::lineThickness ( ) const
virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 144 of file qfontengine.cpp.

◆ loadKerningPairs()

void QFontEngine::loadKerningPairs ( QFixed scalingFactor)

Definition at line 1201 of file qfontengine.cpp.

◆ maxCachedGlyphSize()

int QFontEngine::maxCachedGlyphSize ( )
static

Definition at line 1710 of file qfontengine.cpp.

◆ maxCharWidth()

virtual qreal QFontEngine::maxCharWidth ( ) const
pure virtual

Implemented in QCoreTextFontEngine, QFontEngineBox, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

◆ minLeftBearing()

qreal QFontEngine::minLeftBearing ( ) const
virtual

Reimplemented in QFontEngineBox, QFontEngineMulti, and QWindowsFontEngine.

Definition at line 535 of file qfontengine.cpp.

◆ minRightBearing()

qreal QFontEngine::minRightBearing ( ) const
virtual

Reimplemented in QFontEngineBox, QFontEngineMulti, and QWindowsFontEngine.

Definition at line 548 of file qfontengine.cpp.

◆ preferTypoLineMetrics()

bool QFontEngine::preferTypoLineMetrics ( ) const

Definition at line 455 of file qfontengine.cpp.

◆ processHheaTable()

bool QFontEngine::processHheaTable ( ) const
protected

Definition at line 396 of file qfontengine.cpp.

◆ processOS2Table()

bool QFontEngine::processOS2Table ( ) const
protected

Definition at line 460 of file qfontengine.cpp.

◆ properties()

QFontEngine::Properties QFontEngine::properties ( ) const
virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 1060 of file qfontengine.cpp.

◆ recalcAdvances()

virtual void QFontEngine::recalcAdvances ( QGlyphLayout * ,
ShaperFlags  ) const
inlinevirtual

Reimplemented in QCoreTextFontEngine, QFontEngineBox, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 173 of file qfontengine_p.h.

◆ removeGlyphFromCache()

void QFontEngine::removeGlyphFromCache ( glyph_t )
virtual

Reimplemented in QFontEngineFT.

Definition at line 1056 of file qfontengine.cpp.

◆ renderedPathForGlyph()

QImage QFontEngine::renderedPathForGlyph ( glyph_t glyph,
const QColor & color )

Definition at line 1013 of file qfontengine.cpp.

◆ scriptRequiresOpenType()

bool QFontEngine::scriptRequiresOpenType ( QChar::Script script)
inlinestatic

Definition at line 249 of file qfontengine_p.h.

◆ setDefaultHintStyle()

virtual void QFontEngine::setDefaultHintStyle ( HintStyle )
inlinevirtual

Reimplemented in QFontEngineFT.

Definition at line 278 of file qfontengine_p.h.

◆ setGlyphCache()

void QFontEngine::setGlyphCache ( const void * key,
QFontEngineGlyphCache * data )

Definition at line 1123 of file qfontengine.cpp.

◆ stringToCMap()

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

Implemented in QCoreTextFontEngine, QFontEngineBox, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

◆ subPixelPositionFor()

QFixedPoint QFontEngine::subPixelPositionFor ( const QFixedPoint & position) const
virtual

Definition at line 899 of file qfontengine.cpp.

◆ subPixelPositionForX()

QFixed QFontEngine::subPixelPositionForX ( QFixed x) const
inline

Definition at line 149 of file qfontengine_p.h.

◆ supportsHorizontalSubPixelPositions()

virtual bool QFontEngine::supportsHorizontalSubPixelPositions ( ) const
inlinevirtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, and QWindowsFontEngineDirectWrite.

Definition at line 146 of file qfontengine_p.h.

◆ supportsScript()

bool QFontEngine::supportsScript ( QChar::Script script) const

Definition at line 182 of file qfontengine.cpp.

◆ supportsSubPixelPositions()

bool QFontEngine::supportsSubPixelPositions ( ) const
inline

Definition at line 142 of file qfontengine_p.h.

◆ supportsTransformation()

bool QFontEngine::supportsTransformation ( const QTransform & transform) const
virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, and QWindowsFontEngine.

Definition at line 258 of file qfontengine.cpp.

◆ supportsVerticalSubPixelPositions()

virtual bool QFontEngine::supportsVerticalSubPixelPositions ( ) const
inlinevirtual

Reimplemented in QCoreTextFontEngine, and QFontEngineFT.

Definition at line 147 of file qfontengine_p.h.

◆ synthesized()

virtual int QFontEngine::synthesized ( ) const
inlinevirtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, and QWindowsFontEngine.

Definition at line 141 of file qfontengine_p.h.

◆ tightBoundingBox()

glyph_metrics_t QFontEngine::tightBoundingBox ( const QGlyphLayout & glyphs,
QTextItem::RenderFlags flags )

Definition at line 627 of file qfontengine.cpp.

◆ type()

Type QFontEngine::type ( ) const
inline

Definition at line 105 of file qfontengine_p.h.

◆ underlinePosition()

QFixed QFontEngine::underlinePosition ( ) const
virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QFontEngineMulti, and QWindowsFontEngineDirectWrite.

Definition at line 157 of file qfontengine.cpp.

◆ variableAxes()

QList< QFontVariableAxis > QFontEngine::variableAxes ( ) const
virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QFontEngineMulti, and QWindowsFontEngineDirectWrite.

Definition at line 1676 of file qfontengine.cpp.

◆ xHeight()

QFixed QFontEngine::xHeight ( ) const
virtual

Reimplemented in QCoreTextFontEngine, QFontEngineFT, QFontEngineMulti, QWindowsFontEngine, and QWindowsFontEngineDirectWrite.

Definition at line 244 of file qfontengine.cpp.

Member Data Documentation

◆ cache_cost

uint QFontEngine::cache_cost

Definition at line 337 of file qfontengine_p.h.

◆ face_

Holder QFontEngine::face_
mutable

Definition at line 330 of file qfontengine_p.h.

◆ faceData

struct QFontEngine::FaceData QFontEngine::faceData

◆ font_

Holder QFontEngine::font_
mutable

Definition at line 329 of file qfontengine_p.h.

◆ fontDef

QFontDef QFontEngine::fontDef

Definition at line 294 of file qfontengine_p.h.

◆ fsType

uint QFontEngine::fsType

Definition at line 338 of file qfontengine_p.h.

◆ glyphFormat

GlyphFormat QFontEngine::glyphFormat

Definition at line 353 of file qfontengine_p.h.

◆ isSmoothlyScalable

bool QFontEngine::isSmoothlyScalable

Definition at line 340 of file qfontengine_p.h.

◆ kerning_pairs

QList<KernPair> QFontEngine::kerning_pairs

Definition at line 350 of file qfontengine_p.h.

◆ m_ascent

QFixed QFontEngine::m_ascent
mutableprotected

Definition at line 364 of file qfontengine_p.h.

◆ m_descent

QFixed QFontEngine::m_descent
mutableprotected

Definition at line 365 of file qfontengine_p.h.

◆ m_heightMetricsQueried

bool QFontEngine::m_heightMetricsQueried
mutableprotected

Definition at line 367 of file qfontengine_p.h.

◆ m_leading

QFixed QFontEngine::m_leading
mutableprotected

Definition at line 366 of file qfontengine_p.h.

◆ m_subPixelPositionCount

int QFontEngine::m_subPixelPositionCount

Definition at line 354 of file qfontengine_p.h.

◆ ref

QAtomicInt QFontEngine::ref

Definition at line 293 of file qfontengine_p.h.

◆ symbol

bool QFontEngine::symbol

Definition at line 339 of file qfontengine_p.h.

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