QTextEngine Class Reference

#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
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, 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 366 of file qtextengine_p.h.

Member Typedef Documentation

ItemDecorationList

typedef QList<ItemDecoration> QTextEngine::ItemDecorationList

Definition at line 404 of file qtextengine_p.h.

Member Enumeration Documentation

LayoutState

enum QTextEngine::LayoutState

Enumerator
LayoutEmpty
InLayout
LayoutFailed

Definition at line 368 of file qtextengine_p.h.

Mode

enum QTextEngine::Mode

Enumerator
WidthOnly

Definition at line 410 of file qtextengine_p.h.

Constructor & Destructor Documentation

QTextEngine() [1/2]

QTextEngine::QTextEngine

(

)

Definition at line 1799 of file qtextengine.cpp.

QTextEngine() [2/2]

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

Definition at line 1804 of file qtextengine.cpp.

~QTextEngine()

QTextEngine::~QTextEngine

(

)

Definition at line 1811 of file qtextengine.cpp.

References layoutData, resetFontEngineCache(), and stackEngine.

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Member Function Documentation

addOverline()

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

Definition at line 3651 of file qtextengine.cpp.

References line, overlineList, and painter.

Referenced by drawTextItemDecoration().

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addStrikeOut()

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

Definition at line 3646 of file qtextengine.cpp.

References line, painter, and strikeOutList.

Referenced by drawTextItemDecoration().

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addUnderline()

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

Definition at line 3640 of file qtextengine.cpp.

References line, painter, and underlineList.

Referenced by drawTextItemDecoration().

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adjustUnderlines()

void QTextEngine::adjustUnderlines

(

)

Definition at line 3689 of file qtextengine.cpp.

References adjustUnderlines(), QList< T >::begin(), QList< T >::end(), QList< T >::isEmpty(), it, qFuzzyCompare(), qMax(), and underlineList.

Referenced by adjustUnderlines(), and drawDecorations().

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alignLine()

QFixed QTextEngine::alignLine

(

const QScriptLine &

line

)

Definition at line 3382 of file qtextengine.cpp.

References Qt::AlignHCenter, Qt::AlignJustify, Qt::AlignRight, isRightToLeft(), justify(), line, and QFIXED_MAX.

Referenced by QTextLineItemIterator::QTextLineItemIterator(), QTextLine::cursorToX(), QTextLine::naturalTextRect(), and QTextLine::xToCursor().

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attributes()

const QCharAttributes * QTextEngine::attributes

(

)

const

Definition at line 1819 of file qtextengine.cpp.

References QScriptItem::analysis, QList< T >::at(), QVarLengthArray< T, Prealloc >::data(), ensureSpace(), QUnicodeTools::GraphemeBreaks, QUnicodeTools::HangulLineBreakTailoring, QTextEngine::LayoutData::haveCharAttributes, i, QUnicodeTools::initCharAttributes(), itemize(), QTextEngine::LayoutData::items, layoutData, QUnicodeTools::LineBreaks, QTextEngine::LayoutData::memory, QScriptItem::position, QScriptAnalysis::script, QString::size(), QList< T >::size(), QVLABaseBase::size(), QTextEngine::LayoutData::string, and QUnicodeTools::WhiteSpaces.

Referenced by QTextLine::cursorToX(), elidedText(), QTextLayout::isValidCursorPosition(), justify(), QTextLayout::nextCursorPosition(), nextLogicalPosition(), positionInLigature(), QTextLayout::previousCursorPosition(), and previousLogicalPosition().

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atWordSeparator()

bool QTextEngine::atWordSeparator

(

int

position

)

const

Definition at line 2831 of file qtextengine.cpp.

References QString::at(), layoutData, position, and QTextEngine::LayoutData::string.

Referenced by QTextLayout::nextCursorPosition(), and QTextLayout::previousCursorPosition().

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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 470 of file qtextengine_p.h.

References QScriptItem::glyph_data_offset, and QGlyphLayout::mid().

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bidiReorder()

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

static

Definition at line 1139 of file qtextengine.cpp.

References BIDI_DEBUG, i, and j.

Referenced by QTextLineItemIterator::QTextLineItemIterator(), QPainterPath::addText(), QTextLine::cursorToX(), QPainter::drawText(), and QTextLine::xToCursor().

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boundingBox()

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

Definition at line 2191 of file qtextengine.cpp.

References itemize(), and glyph_metrics_t::width.

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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 3186 of file qtextengine.cpp.

References QGlyphLayout::advances, QList< T >::at(), QGlyphLayout::attributes, QList< T >::begin(), block, QList< T >::cbegin(), QList< T >::cend(), QTextOption::CenterTab, QTextOption::DelimiterTab, QGlyphAttributes::dontPrint, QFontPrivate::dpi, QList< T >::end(), QGraphicsItem::flags(), fnt, QFixed::fromReal(), QTextDocumentPrivate::get(), i, QString::indexOf(), QList< T >::isEmpty(), isRightToLeft(), item, QTextEngine::LayoutData::items, iter, layout, QTextDocumentPrivate::layout(), layoutData, QTextOption::LeftTab, QPaintDevice::logicalDpiY(), QScriptAnalysis::Object, QAbstractTextDocumentLayout::paintDevice(), QScriptItem::position, Q_FALLTHROUGH, qMax(), qMin(), qt_defaultDpiY(), QTextOption::RightTab, shape(), shapedGlyphs(), QString::size(), QList< T >::size(), QTextEngine::LayoutData::string, QScriptAnalysis::TabOrObject, QTextOption::Tab::type, and QGraphicsItem::type().

Referenced by shapeLine().

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clearDecorations()

void QTextEngine::clearDecorations

(

)

Definition at line 3682 of file qtextengine.cpp.

References QList< T >::clear(), overlineList, strikeOutList, and underlineList.

Referenced by drawDecorations().

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clearLineData()

void QTextEngine::clearLineData

(

)

Definition at line 1900 of file qtextengine.cpp.

References QList< T >::clear(), and lines.

Referenced by QTextLayout::beginLayout(), QTextLayout::clearLayout(), setFormats(), setPreeditArea(), and QTextLayout::setText().

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docLayout()

QAbstractTextDocumentLayout * QTextEngine::docLayout ( ) const

inline

Definition at line 498 of file qtextengine_p.h.

References QTextDocumentPrivate::document(), QTextDocument::documentLayout(), QTextDocumentPrivate::get(), and Q_ASSERT.

Referenced by shape().

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drawDecorations()

void QTextEngine::drawDecorations

(

QPainter *

painter

)

Definition at line 3668 of file qtextengine.cpp.

References adjustUnderlines(), clearDecorations(), overlineList, painter, QPainter::pen(), QPainter::setPen(), strikeOutList, and underlineList.

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elidedText()

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

Definition at line 2990 of file qtextengine.cpp.

References QGlyphLayout::advances, QString::append(), QString::at(), QList< T >::at(), QGlyphLayout::attributes, attributes(), QGlyphAttributes::dontPrint, Qt::ElideLeft, Qt::ElideMiddle, Qt::ElideNone, Qt::ElideRight, QFontEngineMulti::engine(), engine, QFontPrivate::engineForScript(), QFontEngineMulti::ensureEngineAt(), fnt, QGlyphLayout::glyphs, gp, QCharAttributes::graphemeBoundary, i, itemize(), QTextEngine::LayoutData::items, layoutData, logClusters(), QString::mid(), QFontEngine::Multi, nextCharJoins(), QScriptItem::num_glyphs, QGlyphLayout::numGlyphs, pos, QScriptItem::position, QString::prepend(), prevCharJoins(), QStringLiteral, QChar::Script_Common, shape(), shapedGlyphs(), QString::size(), QList< T >::size(), QTextEngine::LayoutData::string, stringMidRetainingBidiCC(), Qt::TextShowMnemonic, QChar::unicode(), validate(), and QCharAttributes::whiteSpace.

Referenced by QQuickTextPrivate::elidedText(), and QQuickTextPrivate::setupTextLayout().

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enableDelayDecorations()

void QTextEngine::enableDelayDecorations ( bool  enable = true )

inline

Definition at line 604 of file qtextengine_p.h.

ensureSpace()

bool QTextEngine::ensureSpace ( int  nGlyphs ) const

inline

Definition at line 483 of file qtextengine_p.h.

Referenced by attributes(), shape(), and shapeLine().

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findItem()

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

Definition at line 2100 of file qtextengine.cpp.

References QList< T >::at(), itemize(), QTextEngine::LayoutData::items, items, layoutData, QScriptItem::position, QString::size(), QList< T >::size(), and QTextEngine::LayoutData::string.

Referenced by QTextLine::cursorToX(), QTextLayout::drawCursor(), justify(), shapeLine(), and QTextLine::xToCursor().

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font() [1/2]

QFont QTextEngine::font ( ) const

inline

Definition at line 451 of file qtextengine_p.h.

Referenced by font(), and fontEngine().

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font() [2/2]

QFont QTextEngine::font

(

const QScriptItem &

si

)

const

Definition at line 2236 of file qtextengine.cpp.

References QTextCharFormat::AlignSubScript, QTextCharFormat::AlignSuperScript, QScriptItem::analysis, block, QScriptAnalysis::flags, fnt, font(), QTextDocumentPrivate::get(), hasFormats(), QTextDocumentPrivate::layout(), QAbstractTextDocumentLayout::paintDevice(), QFont::pixelSize(), QFont::pointSize(), QFont::resolve(), QFont::setPixelSize(), QFont::setPointSize(), QScriptAnalysis::SmallCaps, and QFontPrivate::smallCapsFont().

Referenced by QTextLayout::font(), and QTextLine::glyphRuns().

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fontEngine()

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

Definition at line 2274 of file qtextengine.cpp.

References QTextCharFormat::AlignSubScript, QTextCharFormat::AlignSuperScript, QScriptItem::analysis, block, QFontEngine::cloneWithSize(), QFontEngineMulti::createMultiFontEngine(), engine, QFontPrivate::engineForScript(), QScriptAnalysis::flags, fnt, font(), QRawFontPrivate::fontEngine, QTextDocumentPrivate::get(), hasFormats(), QRawFont::isValid(), layout, QTextDocumentPrivate::layout(), QFontEngine::Multi, QAbstractTextDocumentLayout::paintDevice(), QFont::pixelSize(), QRawFont::pixelSize(), QFont::pointSize(), QScriptItem::position, Q_ASSERT, QT_WARNING_DISABLE_GCC, QT_WARNING_POP, QT_WARNING_PUSH, rawFont, QBasicAtomicInteger< T >::ref(), QFontEngine::ref, releaseCachedFontEngine(), QFont::resolve(), QScriptAnalysis::script, QFont::setPixelSize(), QFont::setPointSize(), QScriptAnalysis::SmallCaps, QFontPrivate::smallCapsFontPrivate(), smallCapsFraction, and useRawFont.

Referenced by QPainterPath::addText(), QTextLine::glyphRuns(), justify(), and shape().

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format()

QTextCharFormat QTextEngine::format

(

const QScriptItem *

si

)

const

Definition at line 2812 of file qtextengine.cpp.

References formatCollection(), and formatIndex().

Referenced by QTextInlineObject::format().

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formatCollection()

QTextFormatCollection * QTextEngine::formatCollection ( ) const

inline

Definition at line 492 of file qtextengine_p.h.

References QTextDocumentPrivate::formatCollection(), and QTextDocumentPrivate::get().

Referenced by format(), formatIndex(), and itemize().

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formatIndex()

int QTextEngine::formatIndex

(

const QScriptItem *

si

)

const

Definition at line 2789 of file qtextengine.cpp.

References QList< T >::at(), block, QSet< T >::find(), formatCollection(), QTextDocumentPrivate::get(), QTextFormatCollection::indexForFormat(), it, QTextEngine::LayoutData::items, layoutData, QTextBlock::length(), pos, QScriptItem::position, QTextBlock::position(), Q_ASSERT, qMax(), and qMin().

Referenced by format(), and QTextInlineObject::formatIndex().

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formats()

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

inline

Definition at line 565 of file qtextengine_p.h.

Referenced by QTextLayout::formats(), and setFormats().

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freeMemory()

void QTextEngine::freeMemory

(

)

Definition at line 2768 of file qtextengine.cpp.

References QList< T >::clear(), QTextEngine::LayoutData::currentMaxWidth, QTextEngine::LayoutData::hasBidi, QTextEngine::LayoutData::haveCharAttributes, i, QTextEngine::LayoutData::items, layoutData, LayoutEmpty, QTextEngine::LayoutData::layoutState, lines, QList< T >::size(), stackEngine, and QTextEngine::LayoutData::used.

Referenced by QTextLayout::draw(), QTextLayout::endLayout(), and invalidate().

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hasFormats()

bool QTextEngine::hasFormats ( ) const

inline

Definition at line 563 of file qtextengine_p.h.

References QTextDocumentPrivate::get().

Referenced by font(), and fontEngine().

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insertionPointsForLine()

std::vector< int > QTextEngine::insertionPointsForLine

(

int

lineNum

)

Definition at line 3550 of file qtextengine.cpp.

References QScriptItem::analysis, QScriptAnalysis::bidiLevel, i, lines, and QList< T >::size().

Referenced by positionAfterVisualMovement(), and QTextLine::xToCursor().

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invalidate()

void QTextEngine::invalidate

(

)

Definition at line 1891 of file qtextengine.cpp.

References freeMemory(), maxWidth, minWidth, and resetFontEngineCache().

Referenced by QTextLayout::beginLayout(), QTextBlockData::invalidate(), setFormats(), setPreeditArea(), and QTextLayout::setText().

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isRightToLeft()

bool QTextEngine::isRightToLeft

(

)

const

Definition at line 2081 of file qtextengine.cpp.

References QInputMethod::inputDirection, QGuiApplication::inputMethod(), QString::isEmpty(), QString::isRightToLeft(), itemize(), layoutData, Qt::LeftToRight, Qt::RightToLeft, and QTextEngine::LayoutData::string.

Referenced by alignLine(), calculateTabWidth(), QTextLine::cursorToX(), QTextLayout::draw(), QTextLayout::drawCursor(), itemize(), leadingSpaceWidth(), positionAfterVisualMovement(), and QTextLine::xToCursor().

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itemize()

void QTextEngine::itemize

(

)

const

Definition at line 1926 of file qtextengine.cpp.

References QVarLengthArray< T, Prealloc >::at(), QScriptAnalysis::bidiLevel, block, QFontPrivate::capital, QFont::capitalization(), QTextFormatCollection::charFormat(), QString::constData(), QVarLengthArray< T, Prealloc >::data(), QTextFormatCollection::defaultFont(), QString::detach(), e, QSet< T >::find(), QScriptAnalysis::flags, fnt, QTextFormat::FontCapitalization, QTextCharFormat::fontCapitalization(), QTextFragmentData::format, formatCollection(), QTextDocumentPrivate::get(), QAbstractTextDocumentLayoutPrivate::get(), QTextEngine::LayoutData::hasBidi, QAbstractTextDocumentLayoutPrivate::hasHandlers(), QTextFormat::hasProperty(), i, QUnicodeTools::initScripts(), isRightToLeft(), it, item, QTextEngine::LayoutData::items, j, QTextDocumentPrivate::layout(), layoutData, QTextBlock::length(), QScriptAnalysis::LineOrParagraphSeparator, QChar::LineSeparator, QFont::MixedCase, QChar::Nbsp, QScriptAnalysis::Nbsp, QScriptAnalysis::None, QScriptAnalysis::Object, QChar::ObjectReplacementCharacter, position, QTextBlock::position(), Q_ASSERT, Q_FALLTHROUGH, QTextOption::ShowLineAndParagraphSeparators, QTextOption::ShowTabsAndSpaces, QString::size(), QList< T >::size(), QVLABaseBase::size(), QFragment< N >::size_array, QChar::Space, QScriptAnalysis::Space, QTextEngine::LayoutData::string, QScriptAnalysis::Tab, QChar::Tabulation, QString::unicode(), useRawFont, and validate().

Referenced by attributes(), QTextLayout::beginLayout(), boundingBox(), QTextLine::cursorToX(), QTextLayout::draw(), QTextLayout::drawCursor(), elidedText(), findItem(), isRightToLeft(), justify(), lineNumberForTextPosition(), positionAfterVisualMovement(), tightBoundingBox(), width(), and QTextLine::xToCursor().

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justify()

void QTextEngine::justify

(

const QScriptLine &

si

)

Definition at line 2435 of file qtextengine.cpp.

References add(), Qt::AlignHorizontal_Mask, Qt::AlignJustify, QList< T >::at(), attributes(), findItem(), QScriptAnalysis::flags, fontEngine(), forceJustification, i, itemize(), QTextEngine::LayoutData::items, Justification_Arabic_Alef, Justification_Arabic_BaRa, Justification_Arabic_HahDal, Justification_Arabic_Kashida, Justification_Arabic_Normal, Justification_Arabic_Seen, Justification_Arabic_Space, Justification_Arabic_Waw, Justification_Character, Justification_Prohibited, Justification_Space, QGlyphJustification::JustifyNone, layoutData, leadingSpaceWidth(), QString::length(), line, QScriptAnalysis::LineOrParagraphSeparator, logClusters(), QScriptItem::num_glyphs, QScriptItem::position, Q_ASSERT, Q_FALLTHROUGH, qMax(), qMin(), QVarLengthArray< T, Prealloc >::resize(), set, shape(), shapedGlyphs(), QString::size(), QTextEngine::LayoutData::string, and QVarLengthArray< T, Prealloc >::value().

Referenced by alignLine().

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leadingSpaceWidth()

QFixed QTextEngine::leadingSpaceWidth

(

const QScriptLine &

line

)

Definition at line 3372 of file qtextengine.cpp.

References QTextOption::IncludeTrailingSpaces, isRightToLeft(), QString::length(), and line.

Referenced by QTextLine::cursorToX(), QTextLayout::draw(), and justify().

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length() [1/2]

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

inline

Definition at line 440 of file qtextengine_p.h.

References QScriptItem::position, and position().

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length() [2/2]

int QTextEngine::length ( int  item ) const

inline

Definition at line 434 of file qtextengine_p.h.

References item, items, QScriptItem::position, and QList< T >::size().

Referenced by QTextLine::cursorToX(), QTextLineItemIterator::next(), and QTextLine::xToCursor().

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lineNumberForTextPosition()

int QTextEngine::lineNumberForTextPosition

(

int

pos

)

Definition at line 3536 of file qtextengine.cpp.

References i, itemize(), layoutData, QString::length(), line, lines, pos, QString::size(), QList< T >::size(), and QTextEngine::LayoutData::string.

Referenced by QTextLayout::drawCursor(), QTextLayout::lineForTextPosition(), and positionAfterVisualMovement().

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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 461 of file qtextengine_p.h.

References QScriptItem::position.

Referenced by QTextLine::cursorToX(), elidedText(), QTextLineItemIterator::getSelectionBounds(), QTextLine::glyphRuns(), justify(), QTextLineItemIterator::next(), offsetInLigature(), positionInLigature(), shape(), and QTextLine::xToCursor().

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nextLogicalPosition()

int QTextEngine::nextLogicalPosition

(

int

oldPos

)

const

Definition at line 3521 of file qtextengine.cpp.

References attributes(), attrs, block, QTextBlock::isValid(), layoutData, QTextBlock::length(), Q_ASSERT, QString::size(), and QTextEngine::LayoutData::string.

Referenced by positionAfterVisualMovement().

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offsetInLigature()

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

Definition at line 3399 of file qtextengine.cpp.

References QGlyphLayout::advances, i, logClusters(), pos, and shapedGlyphs().

Referenced by QTextLine::cursorToX(), and QTextLineItemIterator::getSelectionBounds().

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positionAfterVisualMovement()

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

Definition at line 3592 of file qtextengine.cpp.

References QTextEngine::LayoutData::hasBidi, i, insertionPointsForLine(), isRightToLeft(), itemize(), layoutData, lineNumberForTextPosition(), lines, nextLogicalPosition(), pos, previousLogicalPosition(), QTextCursor::Right, and QList< T >::size().

Referenced by QTextLayout::leftCursorPosition(), and QTextLayout::rightCursorPosition().

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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 3447 of file qtextengine.cpp.

References QScriptItem::analysis, attributes(), attrs, dist(), QGlyphLayout::effectiveAdvance(), QFixed::floor(), i, logClusters(), pos, QScriptItem::position, QScriptAnalysis::script, QChar::Script_Bopomofo, QChar::Script_Common, QChar::Script_Greek, QChar::Script_Han, QChar::Script_Hiragana, QChar::Script_Katakana, QChar::Script_Latin, shapedGlyphs(), and QFixed::toInt().

Referenced by QTextLine::xToCursor().

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preeditAreaPosition()

int QTextEngine::preeditAreaPosition ( ) const

inline

Definition at line 559 of file qtextengine_p.h.

Referenced by QTextLayout::preeditAreaPosition(), and QTextLayout::setPreeditArea().

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preeditAreaText()

QString QTextEngine::preeditAreaText ( ) const

inline

Definition at line 560 of file qtextengine_p.h.

Referenced by QTextLayout::preeditAreaText(), and QTextLayout::setPreeditArea().

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previousLogicalPosition()

int QTextEngine::previousLogicalPosition

(

int

oldPos

)

const

Definition at line 3506 of file qtextengine.cpp.

References attributes(), attrs, block, QTextBlock::isValid(), layoutData, QTextBlock::length(), Q_ASSERT, QString::size(), and QTextEngine::LayoutData::string.

Referenced by positionAfterVisualMovement(), and QTextLine::xToCursor().

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resetFontEngineCache()

void QTextEngine::resetFontEngineCache

(

)

Definition at line 1884 of file qtextengine.cpp.

References releaseCachedFontEngine().

Referenced by ~QTextEngine(), invalidate(), QQuickText::invalidateFontCaches(), QTextLayout::setFont(), and QTextLayout::setRawFont().

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setFormats()

void QTextEngine::setFormats

(

const QList< QTextLayout::FormatRange > &

formats

)

Definition at line 2895 of file qtextengine.cpp.

References clearLineData(), formats(), and invalidate().

Referenced by QTextLayout::setFormats().

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setPreeditArea()

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

Definition at line 2873 of file qtextengine.cpp.

References clearLineData(), invalidate(), QString::isEmpty(), and position.

Referenced by QTextLayout::setPreeditArea().

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shape()

void QTextEngine::shape

(

int

item

)

const

Definition at line 1849 of file qtextengine.cpp.

References block, docLayout(), ensureSpace(), fontEngine(), QTextDocumentPrivate::get(), item, QTextEngine::LayoutData::items, layoutData, logClusters(), QTextEngine::LayoutData::logClustersPtr, QScriptAnalysis::Object, QTextBlock::position(), QAbstractTextDocumentLayout::resizeInlineObject(), and QScriptAnalysis::Tab.

Referenced by calculateTabWidth(), QTextLine::cursorToX(), elidedText(), justify(), QTextLineItemIterator::next(), and shapeLine().

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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 479 of file qtextengine_p.h.

References QScriptItem::glyph_data_offset, QGlyphLayout::mid(), and QScriptItem::num_glyphs.

Referenced by QPainterPath::addText(), calculateTabWidth(), QTextLine::cursorToX(), elidedText(), QTextLineItemIterator::getSelectionBounds(), QTextLine::glyphRuns(), justify(), QTextLineItemIterator::next(), offsetInLigature(), positionInLigature(), shapeLine(), width(), and QTextLine::xToCursor().

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shapeLine()

void QTextEngine::shapeLine

(

const QScriptLine &

line

)

Definition at line 1292 of file qtextengine.cpp.

References QScriptItem::analysis, calculateTabWidth(), QGlyphLayout::effectiveAdvance(), ensureSpace(), findItem(), QScriptAnalysis::flags, i, item, QTextEngine::LayoutData::items, layoutData, QString::length(), line, QScriptItem::position, Q_ASSERT, shape(), shapedGlyphs(), QScriptAnalysis::Tab, and QScriptItem::width.

Referenced by QTextLineItemIterator::QTextLineItemIterator(), QTextLine::cursorToX(), and QTextLine::xToCursor().

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tightBoundingBox()

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

Definition at line 2214 of file qtextengine.cpp.

References itemize(), and glyph_metrics_t::width.

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validate()

void QTextEngine::validate

(

)

const

Definition at line 1905 of file qtextengine.cpp.

References block, QTextDocumentPrivate::get(), QString::insert(), QTextBlock::isValid(), layoutData, QTextBlock::next(), QTextOption::ShowDocumentTerminator, QTextOption::ShowLineAndParagraphSeparators, QTextEngine::LayoutData::string, text, and QTextBlock::text().

Referenced by elidedText(), and itemize().

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visualCursorMovement()

bool QTextEngine::visualCursorMovement ( ) const

inline

Definition at line 556 of file qtextengine_p.h.

References QTextDocumentPrivate::defaultCursorMoveStyle, QTextDocumentPrivate::get(), and Qt::VisualMoveStyle.

Referenced by QTextLine::cursorToX(), QTextLayout::drawCursor(), and QTextLine::xToCursor().

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width()

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

Definition at line 2176 of file qtextengine.cpp.

References QGlyphLayout::advances, QGlyphLayout::attributes, QGlyphAttributes::dontPrint, itemize(), j, and shapedGlyphs().

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Member Data Documentation

block

QTextBlock QTextEngine::block

Definition at line 533 of file qtextengine_p.h.

Referenced by QTextLayout::QTextLayout(), calculateTabWidth(), font(), fontEngine(), formatIndex(), itemize(), QTextLayout::nextCursorPosition(), nextLogicalPosition(), QTextLayout::previousCursorPosition(), previousLogicalPosition(), QScriptLine::setDefaultHeight(), QTextLayout::setFormats(), QTextLayout::setPreeditArea(), shape(), QTextLine::textLength(), and validate().

cacheGlyphs

uint QTextEngine::cacheGlyphs

Definition at line 541 of file qtextengine_p.h.

Referenced by QTextLayout::cacheEnabled(), QTextLayout::draw(), QTextLayout::endLayout(), and QTextLayout::setCacheEnabled().

delayDecorations

uint QTextEngine::delayDecorations

Definition at line 545 of file qtextengine_p.h.

fnt

QFont QTextEngine::fnt

mutable

Definition at line 529 of file qtextengine_p.h.

Referenced by calculateTabWidth(), elidedText(), font(), fontEngine(), itemize(), QScriptLine::setDefaultHeight(), and QTextLayout::setFont().

forceJustification

uint QTextEngine::forceJustification

Definition at line 543 of file qtextengine_p.h.

Referenced by justify(), and QTextLayout::setFlags().

ignoreBidi

uint QTextEngine::ignoreBidi

Definition at line 540 of file qtextengine_p.h.

Referenced by QTextLayout::setFlags().

layoutData

LayoutData* QTextEngine::layoutData

mutable

Definition at line 550 of file qtextengine_p.h.

Referenced by QStackTextEngine::QStackTextEngine(), QTextLineItemIterator::QTextLineItemIterator(), ~QTextEngine(), QPainterPath::addText(), QTextInlineObject::ascent(), attributes(), atWordSeparator(), QTextLayout::beginLayout(), calculateTabWidth(), QTextLayout::createLine(), QTextLine::cursorToX(), QTextInlineObject::descent(), QTextLayout::draw(), QTextLayout::drawCursor(), elidedText(), QTextLayout::endLayout(), findItem(), QTextInlineObject::format(), QTextInlineObject::formatIndex(), formatIndex(), freeMemory(), QTextInlineObject::height(), isRightToLeft(), QTextLayout::isValidCursorPosition(), itemize(), justify(), lineNumberForTextPosition(), QTextLineItemIterator::next(), QTextLayout::nextCursorPosition(), nextLogicalPosition(), positionAfterVisualMovement(), QTextLayout::previousCursorPosition(), previousLogicalPosition(), QTextInlineObject::rect(), QTextInlineObject::setAscent(), QTextInlineObject::setDescent(), QTextLine::setLineWidth(), QTextInlineObject::setWidth(), shape(), shapeLine(), QTextInlineObject::textDirection(), QTextInlineObject::textPosition(), validate(), QTextInlineObject::width(), and QTextLine::xToCursor().

lines

QScriptLineArray QTextEngine::lines

mutable

Definition at line 507 of file qtextengine_p.h.

Referenced by addSelectedRegionsToPath(), QPainterPath::addText(), QTextLine::ascent(), QTextLayout::boundingRect(), clearLineData(), QTextLayout::createLine(), QTextLine::cursorToX(), QTextLine::descent(), QTextLayout::draw(), QTextLayout::drawCursor(), QTextLayout::endLayout(), freeMemory(), QTextLayout::glyphRuns(), QTextLine::glyphRuns(), QTextLine::height(), QTextLine::horizontalAdvance(), insertionPointsForLine(), QTextLine::leading(), QTextLine::leadingIncluded(), QTextLayout::lineCount(), lineNumberForTextPosition(), QTextLine::naturalTextRect(), QTextLine::naturalTextWidth(), QTextLine::position(), positionAfterVisualMovement(), QTextLine::rect(), QTextLine::setLeadingIncluded(), QTextLine::setLineWidth(), QTextLine::setNumColumns(), QTextLine::setNumColumns(), QTextLine::setPosition(), QTextLine::textLength(), QTextLine::textStart(), QTextLine::width(), QTextLine::x(), QTextLine::xToCursor(), and QTextLine::y().

maxWidth

QFixed QTextEngine::maxWidth

Definition at line 538 of file qtextengine_p.h.

Referenced by QTextLayout::createLine(), invalidate(), and QTextLayout::maximumWidth().

minWidth

QFixed QTextEngine::minWidth

Definition at line 537 of file qtextengine_p.h.

Referenced by invalidate(), and QTextLayout::minimumWidth().

option

QTextOption QTextEngine::option

Definition at line 535 of file qtextengine_p.h.

Referenced by QTextLine::cursorToX(), QTextLayout::draw(), QTextLayout::setFlags(), QTextLayout::setTextOption(), QQuickTextPrivate::setupTextLayout(), QTextLine::textLength(), and QTextLayout::textOption().

overlineList

ItemDecorationList QTextEngine::overlineList

Definition at line 554 of file qtextengine_p.h.

Referenced by addOverline(), clearDecorations(), and drawDecorations().

position

QPointF QTextEngine::position

Definition at line 539 of file qtextengine_p.h.

Referenced by atWordSeparator(), QTextLayout::draw(), QTextLayout::drawCursor(), itemize(), QTextLayout::position(), QTextLayout::setPosition(), and setPreeditArea().

rawFont

QRawFont QTextEngine::rawFont

Definition at line 531 of file qtextengine_p.h.

Referenced by fontEngine(), QTextLine::glyphRuns(), and QTextLayout::setRawFont().

stackEngine

uint QTextEngine::stackEngine

Definition at line 542 of file qtextengine_p.h.

Referenced by QStackTextEngine::QStackTextEngine(), ~QTextEngine(), QTextLayout::~QTextLayout(), and freeMemory().

strikeOutList

ItemDecorationList QTextEngine::strikeOutList

Definition at line 553 of file qtextengine_p.h.

Referenced by addStrikeOut(), clearDecorations(), and drawDecorations().

text

QString QTextEngine::text

Definition at line 528 of file qtextengine_p.h.

Referenced by QTextLayout::QTextLayout(), QTextLine::glyphRuns(), QTextLayout::setText(), QTextLayout::text(), and validate().

underlineList

ItemDecorationList QTextEngine::underlineList

Definition at line 552 of file qtextengine_p.h.

Referenced by addUnderline(), adjustUnderlines(), clearDecorations(), and drawDecorations().

useRawFont

uint QTextEngine::useRawFont

Definition at line 547 of file qtextengine_p.h.

Referenced by fontEngine(), QTextLine::glyphRuns(), itemize(), QTextLayout::setFont(), and QTextLayout::setRawFont().

visualMovement

uint QTextEngine::visualMovement

Definition at line 544 of file qtextengine_p.h.

Referenced by QTextLayout::cursorMoveStyle(), and QTextLayout::setCursorMoveStyle().

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

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