#include <qtextengine_p.h>

Inheritance diagram for QTextEngine:

Collaboration diagram for QTextEngine:

Classes
struct	ItemDecoration

struct	LayoutData

Public Types
enum	LayoutState { LayoutEmpty , InLayout , LayoutFailed }

enum	Mode { WidthOnly = 0x07 }

typedef QList< ItemDecoration >	ItemDecorationList

Public Member Functions
	QTextEngine ()

	QTextEngine (const QString &str, const QFont &f)

	~QTextEngine ()

void	invalidate ()

void	clearLineData ()

void	validate () const

void	itemize () const

bool	isRightToLeft () const

const QCharAttributes *	attributes () const

void	shape (int item) const

void	justify (const QScriptLine &si)

QFixed	alignLine (const QScriptLine &line)

QFixed	width (int charFrom, int numChars) const

glyph_metrics_t	boundingBox (int from, int len) const

glyph_metrics_t	tightBoundingBox (int from, int len) const

int	length (int item) const

int	length (const QScriptItem *si) const

QFontEngine *	fontEngine (const QScriptItem &si, QFixed ascent=nullptr, QFixed descent=nullptr, QFixed *leading=nullptr) const

QFont	font (const QScriptItem &si) const

QFont	font () const

unsigned short *	logClusters (const QScriptItem *si) const

QGlyphLayout	availableGlyphs (const QScriptItem *si) const

QGlyphLayout	shapedGlyphs (const QScriptItem *si) const

bool	ensureSpace (int nGlyphs) const

void	freeMemory ()

int	findItem (int strPos, int firstItem=0) const

QTextFormatCollection *	formatCollection () const

QTextCharFormat	format (const QScriptItem *si) const

QAbstractTextDocumentLayout *	docLayout () const

int	formatIndex (const QScriptItem *si) const

QFixed	calculateTabWidth (int index, QFixed x) const
	returns the width of tab at index (in the tabs array) with the tab-start at position x More...

bool	visualCursorMovement () const

int	preeditAreaPosition () const

QString	preeditAreaText () const

void	setPreeditArea (int position, const QString &text)

bool	hasFormats () const

QList< QTextLayout::FormatRange >	formats () const

void	setFormats (const QList< QTextLayout::FormatRange > &formats)

bool	atWordSeparator (int position) const

QString	elidedText (Qt::TextElideMode mode, const QFixed &width, int flags=0, int from=0, int count=-1) const

void	shapeLine (const QScriptLine &line)

QFixed	leadingSpaceWidth (const QScriptLine &line)

QFixed	offsetInLigature (const QScriptItem *si, int pos, int max, int glyph_pos)

int	positionInLigature (const QScriptItem *si, int end, QFixed x, QFixed edge, int glyph_pos, bool cursorOnCharacter)

int	previousLogicalPosition (int oldPos) const

int	nextLogicalPosition (int oldPos) const

int	lineNumberForTextPosition (int pos)

int	positionAfterVisualMovement (int oldPos, QTextCursor::MoveOperation op)

std::vector< int >	insertionPointsForLine (int lineNum)

void	resetFontEngineCache ()

void	enableDelayDecorations (bool enable=true)

void	addUnderline (QPainter *painter, const QLineF &line)

void	addStrikeOut (QPainter *painter, const QLineF &line)

void	addOverline (QPainter *painter, const QLineF &line)

void	drawDecorations (QPainter *painter)

void	clearDecorations ()

void	adjustUnderlines ()

Static Public Member Functions
static void	bidiReorder (int numRuns, const quint8 levels, int visualOrder)

Public Attributes
QScriptLineArray	lines

QString	text

QFont	fnt

QRawFont	rawFont

QTextBlock	block

QTextOption	option

QFixed	minWidth

QFixed	maxWidth

QPointF	position

uint	ignoreBidi: 1

uint	cacheGlyphs: 1

uint	stackEngine: 1

uint	forceJustification: 1

uint	visualMovement: 1

uint	delayDecorations: 1

uint	useRawFont: 1

LayoutData *	layoutData

ItemDecorationList	underlineList

ItemDecorationList	strikeOutList

ItemDecorationList	overlineList

Detailed Description

Definition at line 402 of file qtextengine_p.h.

Member Typedef Documentation

◆ ItemDecorationList

typedef QList<ItemDecoration> QTextEngine::ItemDecorationList

Definition at line 439 of file qtextengine_p.h.

Member Enumeration Documentation

◆ LayoutState

enum QTextEngine::LayoutState

Enumerator
LayoutEmpty
InLayout
LayoutFailed

Definition at line 404 of file qtextengine_p.h.

◆ Mode

enum QTextEngine::Mode

Enumerator
WidthOnly

Definition at line 445 of file qtextengine_p.h.

Constructor & Destructor Documentation

◆ QTextEngine() [1/2]

QTextEngine::QTextEngine ( )

Definition at line 1795 of file qtextengine.cpp.

◆ QTextEngine() [2/2]

QTextEngine::QTextEngine	(	const QString &	str,
		const QFont &	f
	)

Definition at line 1800 of file qtextengine.cpp.

◆ ~QTextEngine()

QTextEngine::~QTextEngine ( )

Definition at line 1807 of file qtextengine.cpp.

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Member Function Documentation

◆ addOverline()

void QTextEngine::addOverline	(	QPainter *	painter,
		const QLineF &	line
	)

Definition at line 3634 of file qtextengine.cpp.

◆ addStrikeOut()

void QTextEngine::addStrikeOut	(	QPainter *	painter,
		const QLineF &	line
	)

Definition at line 3629 of file qtextengine.cpp.

◆ addUnderline()

void QTextEngine::addUnderline	(	QPainter *	painter,
		const QLineF &	line
	)

Definition at line 3623 of file qtextengine.cpp.

◆ adjustUnderlines()

void QTextEngine::adjustUnderlines ( )

Definition at line 3672 of file qtextengine.cpp.

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◆ alignLine()

QFixed QTextEngine::alignLine ( const QScriptLine & line )

Definition at line 3365 of file qtextengine.cpp.

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◆ attributes()

const QCharAttributes * QTextEngine::attributes ( ) const

Definition at line 1815 of file qtextengine.cpp.

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◆ atWordSeparator()

bool QTextEngine::atWordSeparator ( int position ) const

Definition at line 2814 of file qtextengine.cpp.

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◆ availableGlyphs()

QGlyphLayout QTextEngine::availableGlyphs ( const QScriptItem * si ) const

inline

Returns an array of QGlyphLayout items, offset at the script item. Each item in the array matches one glyph in the text, storing the advance, position etc. The returned item's length equals to the number of available glyphs. This may be more than what was actually shaped.

See also: logClusters()

Definition at line 505 of file qtextengine_p.h.

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◆ bidiReorder()

void QTextEngine::bidiReorder	(	int	numRuns,
		const quint8 *	levels,
		int *	visualOrder
	)

static

Definition at line 1174 of file qtextengine.cpp.

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◆ boundingBox()

glyph_metrics_t QTextEngine::boundingBox	(	int	from,
		int	len
	)		const

Definition at line 2177 of file qtextengine.cpp.

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◆ calculateTabWidth()

QFixed QTextEngine::calculateTabWidth	(	int	index,
		QFixed	x
	)		const

returns the width of tab at index (in the tabs array) with the tab-start at position x

Definition at line 3169 of file qtextengine.cpp.

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◆ clearDecorations()

void QTextEngine::clearDecorations ( )

Definition at line 3665 of file qtextengine.cpp.

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◆ clearLineData()

void QTextEngine::clearLineData ( )

Definition at line 1896 of file qtextengine.cpp.

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◆ docLayout()

QAbstractTextDocumentLayout* QTextEngine::docLayout ( ) const

inline

Definition at line 533 of file qtextengine_p.h.

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◆ drawDecorations()

void QTextEngine::drawDecorations ( QPainter * painter )

Definition at line 3651 of file qtextengine.cpp.

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◆ elidedText()

QString QTextEngine::elidedText	(	Qt::TextElideMode	mode,
		const QFixed &	width,
		int	flags = `0`,
		int	from = `0`,
		int	count = `-1`
	)		const

Definition at line 2973 of file qtextengine.cpp.

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◆ enableDelayDecorations()

void QTextEngine::enableDelayDecorations ( bool enable = true )

inline

Definition at line 639 of file qtextengine_p.h.

◆ ensureSpace()

bool QTextEngine::ensureSpace ( int nGlyphs ) const

inline

Definition at line 518 of file qtextengine_p.h.

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◆ findItem()

int QTextEngine::findItem	(	int	strPos,
		int	firstItem = `0`
	)		const

Definition at line 2086 of file qtextengine.cpp.

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◆ font() [1/2]

QFont QTextEngine::font ( ) const

inline

Definition at line 486 of file qtextengine_p.h.

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◆ font() [2/2]

QFont QTextEngine::font ( const QScriptItem & si ) const

Definition at line 2222 of file qtextengine.cpp.

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◆ fontEngine()

QFontEngine * QTextEngine::fontEngine	(	const QScriptItem &	si,
		QFixed *	ascent = `nullptr`,
		QFixed *	descent = `nullptr`,
		QFixed *	leading = `nullptr`
	)		const

Definition at line 2260 of file qtextengine.cpp.

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◆ format()

QTextCharFormat QTextEngine::format ( const QScriptItem * si ) const

Definition at line 2795 of file qtextengine.cpp.

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◆ formatCollection()

QTextFormatCollection* QTextEngine::formatCollection ( ) const

inline

Definition at line 527 of file qtextengine_p.h.

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◆ formatIndex()

int QTextEngine::formatIndex ( const QScriptItem * si ) const

Definition at line 2772 of file qtextengine.cpp.

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◆ formats()

QList<QTextLayout::FormatRange> QTextEngine::formats ( ) const

inline

Definition at line 600 of file qtextengine_p.h.

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◆ freeMemory()

void QTextEngine::freeMemory ( )

Definition at line 2752 of file qtextengine.cpp.

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◆ hasFormats()

bool QTextEngine::hasFormats ( ) const

inline

Definition at line 598 of file qtextengine_p.h.

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◆ insertionPointsForLine()

std::vector< int > QTextEngine::insertionPointsForLine ( int lineNum )

Definition at line 3533 of file qtextengine.cpp.

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◆ invalidate()

void QTextEngine::invalidate ( )

Definition at line 1887 of file qtextengine.cpp.

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◆ isRightToLeft()

bool QTextEngine::isRightToLeft ( ) const

Definition at line 2067 of file qtextengine.cpp.

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◆ itemize()

void QTextEngine::itemize ( ) const

Definition at line 1922 of file qtextengine.cpp.

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◆ justify()

void QTextEngine::justify ( const QScriptLine & si )

Definition at line 2421 of file qtextengine.cpp.

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◆ leadingSpaceWidth()

QFixed QTextEngine::leadingSpaceWidth ( const QScriptLine & line )

Definition at line 3355 of file qtextengine.cpp.

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◆ length() [1/2]

int QTextEngine::length ( const QScriptItem * si ) const

inline

Definition at line 475 of file qtextengine_p.h.

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◆ length() [2/2]

int QTextEngine::length ( int item ) const

inline

Definition at line 469 of file qtextengine_p.h.

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◆ lineNumberForTextPosition()

int QTextEngine::lineNumberForTextPosition ( int pos )

Definition at line 3519 of file qtextengine.cpp.

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◆ logClusters()

unsigned short* QTextEngine::logClusters ( const QScriptItem * si ) const

inline

Returns a pointer to an array of log clusters, offset at the script item. Each item in the array is a unsigned short. For each character in the original string there is an entry in the table so there is a one to one correlation in indexes between the original text and the index in the logcluster. The value of each item is the position in the glyphs array. Multiple similar pointers in the logclusters array imply that one glyph is used for more than one character.

See also: glyphs()

Definition at line 496 of file qtextengine_p.h.

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◆ nextLogicalPosition()

int QTextEngine::nextLogicalPosition ( int oldPos ) const

Definition at line 3504 of file qtextengine.cpp.

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◆ offsetInLigature()

QFixed QTextEngine::offsetInLigature	(	const QScriptItem *	si,
		int	pos,
		int	max,
		int	glyph_pos
	)

Definition at line 3382 of file qtextengine.cpp.

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◆ positionAfterVisualMovement()

int QTextEngine::positionAfterVisualMovement	(	int	oldPos,
		QTextCursor::MoveOperation	op
	)

Definition at line 3575 of file qtextengine.cpp.

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◆ positionInLigature()

int QTextEngine::positionInLigature	(	const QScriptItem *	si,
		int	end,
		QFixed	x,
		QFixed	edge,
		int	glyph_pos,
		bool	cursorOnCharacter
	)

Definition at line 3430 of file qtextengine.cpp.

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◆ preeditAreaPosition()

int QTextEngine::preeditAreaPosition ( ) const

inline

Definition at line 594 of file qtextengine_p.h.

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◆ preeditAreaText()

QString QTextEngine::preeditAreaText ( ) const

inline

Definition at line 595 of file qtextengine_p.h.

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◆ previousLogicalPosition()

int QTextEngine::previousLogicalPosition ( int oldPos ) const

Definition at line 3489 of file qtextengine.cpp.

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◆ resetFontEngineCache()

void QTextEngine::resetFontEngineCache ( )

Definition at line 1880 of file qtextengine.cpp.

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◆ setFormats()

void QTextEngine::setFormats ( const QList< QTextLayout::FormatRange > & formats )

Definition at line 2878 of file qtextengine.cpp.

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◆ setPreeditArea()

void QTextEngine::setPreeditArea	(	int	position,
		const QString &	text
	)

Definition at line 2856 of file qtextengine.cpp.

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◆ shape()

void QTextEngine::shape ( int item ) const

Definition at line 1845 of file qtextengine.cpp.

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◆ shapedGlyphs()

QGlyphLayout QTextEngine::shapedGlyphs ( const QScriptItem * si ) const

inline

Returns an array of QGlyphLayout items, offset at the script item. Each item in the array matches one glyph in the text, storing the advance, position etc. The returned item's length equals to the number of shaped glyphs.

See also: logClusters()

Definition at line 514 of file qtextengine_p.h.

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◆ shapeLine()

void QTextEngine::shapeLine ( const QScriptLine & line )

Definition at line 1327 of file qtextengine.cpp.

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◆ tightBoundingBox()

glyph_metrics_t QTextEngine::tightBoundingBox	(	int	from,
		int	len
	)		const

Definition at line 2200 of file qtextengine.cpp.

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◆ validate()

void QTextEngine::validate ( ) const

Definition at line 1901 of file qtextengine.cpp.

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◆ visualCursorMovement()

bool QTextEngine::visualCursorMovement ( ) const

inline

Definition at line 591 of file qtextengine_p.h.

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◆ width()

QFixed QTextEngine::width	(	int	charFrom,
		int	numChars
	)		const

Definition at line 2162 of file qtextengine.cpp.

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Member Data Documentation

◆ block

QTextBlock QTextEngine::block

Definition at line 568 of file qtextengine_p.h.

◆ cacheGlyphs

uint QTextEngine::cacheGlyphs

Definition at line 576 of file qtextengine_p.h.

◆ delayDecorations

uint QTextEngine::delayDecorations

Definition at line 580 of file qtextengine_p.h.

◆ fnt

QFont QTextEngine::fnt

mutable

Definition at line 564 of file qtextengine_p.h.

◆ forceJustification

uint QTextEngine::forceJustification

Definition at line 578 of file qtextengine_p.h.

◆ ignoreBidi

uint QTextEngine::ignoreBidi

Definition at line 575 of file qtextengine_p.h.

◆ layoutData

LayoutData* QTextEngine::layoutData

mutable

Definition at line 585 of file qtextengine_p.h.

◆ lines

QScriptLineArray QTextEngine::lines

mutable

Definition at line 542 of file qtextengine_p.h.

◆ maxWidth

QFixed QTextEngine::maxWidth

Definition at line 573 of file qtextengine_p.h.

◆ minWidth

QFixed QTextEngine::minWidth

Definition at line 572 of file qtextengine_p.h.

◆ option

QTextOption QTextEngine::option

Definition at line 570 of file qtextengine_p.h.

◆ overlineList

ItemDecorationList QTextEngine::overlineList

Definition at line 589 of file qtextengine_p.h.

◆ position

QPointF QTextEngine::position

Definition at line 574 of file qtextengine_p.h.

◆ rawFont

QRawFont QTextEngine::rawFont

Definition at line 566 of file qtextengine_p.h.

◆ stackEngine

uint QTextEngine::stackEngine

Definition at line 577 of file qtextengine_p.h.

◆ strikeOutList

ItemDecorationList QTextEngine::strikeOutList

Definition at line 588 of file qtextengine_p.h.

◆ text

QString QTextEngine::text

Definition at line 563 of file qtextengine_p.h.

◆ underlineList

ItemDecorationList QTextEngine::underlineList

Definition at line 587 of file qtextengine_p.h.

◆ useRawFont

uint QTextEngine::useRawFont

Definition at line 582 of file qtextengine_p.h.

◆ visualMovement

uint QTextEngine::visualMovement

Definition at line 579 of file qtextengine_p.h.

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

src/gui/text/qtextengine_p.h
src/gui/text/qtextengine.cpp

Classes

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Detailed Description

Member Typedef Documentation

◆ ItemDecorationList

Member Enumeration Documentation

◆ LayoutState

◆ Mode

Constructor & Destructor Documentation

◆ QTextEngine() [1/2]

◆ QTextEngine() [2/2]

◆ ~QTextEngine()

Member Function Documentation

◆ addOverline()

◆ addStrikeOut()

◆ addUnderline()

◆ adjustUnderlines()

◆ alignLine()

◆ attributes()

◆ atWordSeparator()

◆ availableGlyphs()

◆ bidiReorder()

◆ boundingBox()

◆ calculateTabWidth()

◆ clearDecorations()

◆ clearLineData()

◆ docLayout()

◆ drawDecorations()

◆ elidedText()

◆ enableDelayDecorations()

◆ ensureSpace()

◆ findItem()

◆ font() [1/2]

◆ font() [2/2]

◆ fontEngine()

◆ format()

◆ formatCollection()

◆ formatIndex()

◆ formats()

◆ freeMemory()

◆ hasFormats()

◆ insertionPointsForLine()

◆ invalidate()

◆ isRightToLeft()

◆ itemize()

◆ justify()

◆ leadingSpaceWidth()

◆ length() [1/2]

◆ length() [2/2]

◆ lineNumberForTextPosition()

◆ logClusters()

◆ nextLogicalPosition()

◆ offsetInLigature()

◆ positionAfterVisualMovement()

◆ positionInLigature()

◆ preeditAreaPosition()

◆ preeditAreaText()

◆ previousLogicalPosition()

◆ resetFontEngineCache()

◆ setFormats()

◆ setPreeditArea()

◆ shape()

◆ shapedGlyphs()

◆ shapeLine()

◆ tightBoundingBox()

◆ validate()

◆ visualCursorMovement()

◆ width()

Member Data Documentation

◆ block

◆ cacheGlyphs

◆ delayDecorations

◆ fnt

◆ forceJustification

◆ ignoreBidi

◆ layoutData

◆ lines