QGraphicsLayoutItemPrivate Class Reference

#include <qgraphicslayoutitem_p.h>

Inheritance diagram for QGraphicsLayoutItemPrivate:

Collaboration diagram for QGraphicsLayoutItemPrivate:

Public Types
enum	SizeComponent { Width , Height }

Public Member Functions
virtual	~QGraphicsLayoutItemPrivate ()
	QGraphicsLayoutItemPrivate (QGraphicsLayoutItem *parent, bool isLayout)
void	init ()
QSizeF *	effectiveSizeHints (const QSizeF &constraint) const
QGraphicsItem *	parentItem () const
void	ensureUserSizeHints ()
void	setSize (Qt::SizeHint which, const QSizeF &size)
void	setSizeComponent (Qt::SizeHint which, SizeComponent component, qreal value)
bool	hasHeightForWidth () const
bool	hasWidthForHeight () const

Static Public Member Functions
static QGraphicsLayoutItemPrivate *	get (QGraphicsLayoutItem *q)
static const QGraphicsLayoutItemPrivate *	get (const QGraphicsLayoutItem *q)

Public Attributes
QSizePolicy	sizePolicy
QGraphicsLayoutItem *	parent
QSizeF *	userSizeHints
QSizeF	cachedSizeHints [Qt::NSizeHints]
QSizeF	cachedConstraint
QSizeF	cachedSizeHintsWithConstraints [Qt::NSizeHints]
quint32	sizeHintCacheDirty: 1
quint32	sizeHintWithConstraintCacheDirty: 1
quint32	isLayout: 1
quint32	ownedByLayout: 1
QGraphicsLayoutItem *	q_ptr
QRectF	geom
QGraphicsItem *	graphicsItem

Detailed Description

Definition at line 27 of file qgraphicslayoutitem_p.h.

Member Enumeration Documentation

SizeComponent

enum QGraphicsLayoutItemPrivate::SizeComponent

Enumerator
Width
Height

Definition at line 41 of file qgraphicslayoutitem_p.h.

Constructor & Destructor Documentation

~QGraphicsLayoutItemPrivate()

QGraphicsLayoutItemPrivate::~QGraphicsLayoutItemPrivate ( )

virtual

Definition at line 80 of file qgraphicslayoutitem.cpp.

References userSizeHints.

QGraphicsLayoutItemPrivate()

QGraphicsLayoutItemPrivate::QGraphicsLayoutItemPrivate	(	QGraphicsLayoutItem *	par,
		bool	layout )

Definition at line 72 of file qgraphicslayoutitem.cpp.

Member Function Documentation

effectiveSizeHints()

QSizeF * QGraphicsLayoutItemPrivate::effectiveSizeHints

(

const QSizeF &

constraint

)

const

Definition at line 98 of file qgraphicslayoutitem.cpp.

References boundSize(), cachedConstraint, cachedSizeHints, cachedSizeHintsWithConstraints, COMBINE_SIZE, combineSize(), expandSize(), QSizeF::height(), i, Qt::MaximumSize, Qt::MinimumDescent, Qt::MinimumSize, normalizeHints(), Qt::NSizeHints, Qt::PreferredSize, QWIDGETSIZE_MAX, QSizeF::rheight(), QSizeF::rwidth(), sizeHintCacheDirty, sizeHintWithConstraintCacheDirty, userSizeHints, and QSizeF::width().

Referenced by QGraphicsLayoutItem::effectiveSizeHint().

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ensureUserSizeHints()

void QGraphicsLayoutItemPrivate::ensureUserSizeHints

(

)

Ensures that userSizeHints is allocated. This function must be called before any dereferencing.

Definition at line 191 of file qgraphicslayoutitem.cpp.

References Qt::NSizeHints, and userSizeHints.

Referenced by setSize(), and setSizeComponent().

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get() [1/2]

static const QGraphicsLayoutItemPrivate * QGraphicsLayoutItemPrivate::get ( const QGraphicsLayoutItem * q )

inlinestatic

Definition at line 34 of file qgraphicslayoutitem_p.h.

get() [2/2]

static QGraphicsLayoutItemPrivate * QGraphicsLayoutItemPrivate::get ( QGraphicsLayoutItem * q )

inlinestatic

Definition at line 33 of file qgraphicslayoutitem_p.h.

Referenced by _q_boundGeometryToSizeConstraints(), QGraphicsGridLayoutEngineItem::dynamicConstraintOrientation(), QGraphicsGridLayoutEngineItem::hasDynamicConstraint(), hasHeightForWidth(), hasWidthForHeight(), and minimumHeightForWidth().

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hasHeightForWidth()

bool QGraphicsLayoutItemPrivate::hasHeightForWidth

(

)

const

Definition at line 238 of file qgraphicslayoutitem.cpp.

References QGraphicsLayout::count(), get(), i, isLayout, QGraphicsItem::isWidget(), item, and QGraphicsLayout::itemAt().

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hasWidthForHeight()

bool QGraphicsLayoutItemPrivate::hasWidthForHeight

(

)

const

Definition at line 258 of file qgraphicslayoutitem.cpp.

References QGraphicsLayout::count(), get(), i, isLayout, QGraphicsItem::isWidget(), item, and QGraphicsLayout::itemAt().

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init()

void QGraphicsLayoutItemPrivate::init

(

)

Definition at line 89 of file qgraphicslayoutitem.cpp.

References sizeHintCacheDirty, and sizeHintWithConstraintCacheDirty.

parentItem()

QGraphicsItem * QGraphicsLayoutItemPrivate::parentItem

(

)

const

Returns the parent item of this layout, or \nullptr if this layout is not installed on any widget.

If this is the item that the layout is installed on, it will return "itself".

If the layout is a sub-layout, this function returns the parent widget of the parent layout.

Note that it will traverse up the layout item hierarchy instead of just calling QGraphicsItem::parentItem(). This is on purpose.

See also

parent()

Definition at line 174 of file qgraphicslayoutitem.cpp.

References QGraphicsLayoutItem::graphicsItem(), QGraphicsLayoutItem::isLayout(), parent, and QGraphicsLayoutItem::parentLayoutItem().

Referenced by QGraphicsLayoutPrivate::addChildLayoutItem(), QGraphicsLayoutPrivate::getMargin(), QGraphicsLayoutStyleInfo::style(), QGraphicsAnchorLayoutPrivate::styleInfo(), and QGraphicsLayoutPrivate::visualDirection().

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setSize()

void QGraphicsLayoutItemPrivate::setSize	(	Qt::SizeHint	which,
		const QSizeF &	size )

Sets the user size hint which to size. Use an invalid size to unset the size hint.

Definition at line 202 of file qgraphicslayoutitem.cpp.

References ensureUserSizeHints(), and userSizeHints.

Referenced by QGraphicsLayoutItem::setMaximumSize(), QGraphicsLayoutItem::setMinimumSize(), and QGraphicsLayoutItem::setPreferredSize().

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setSizeComponent()

void QGraphicsLayoutItemPrivate::setSizeComponent	(	Qt::SizeHint	which,
		SizeComponent	component,
		qreal	value )

Sets the width of the user size hint which to width.

Definition at line 223 of file qgraphicslayoutitem.cpp.

References component(), ensureUserSizeHints(), QSizeF::rheight(), rwidth(), userSizeHints, and Width.

Referenced by QGraphicsLayoutItem::setMaximumHeight(), QGraphicsLayoutItem::setMaximumWidth(), QGraphicsLayoutItem::setMinimumHeight(), QGraphicsLayoutItem::setMinimumWidth(), QGraphicsLayoutItem::setPreferredHeight(), and QGraphicsLayoutItem::setPreferredWidth().

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Member Data Documentation

cachedConstraint

QSizeF QGraphicsLayoutItemPrivate::cachedConstraint

mutable

Definition at line 52 of file qgraphicslayoutitem_p.h.

Referenced by effectiveSizeHints().

cachedSizeHints

QSizeF QGraphicsLayoutItemPrivate::cachedSizeHints[Qt::NSizeHints]

mutable

Definition at line 51 of file qgraphicslayoutitem_p.h.

Referenced by effectiveSizeHints().

cachedSizeHintsWithConstraints

QSizeF QGraphicsLayoutItemPrivate::cachedSizeHintsWithConstraints[Qt::NSizeHints]

mutable

Definition at line 53 of file qgraphicslayoutitem_p.h.

Referenced by effectiveSizeHints().

geom

QRectF QGraphicsLayoutItemPrivate::geom

Definition at line 61 of file qgraphicslayoutitem_p.h.

Referenced by QGraphicsAnchorLayoutPrivate::setItemsGeometries().

graphicsItem

QGraphicsItem* QGraphicsLayoutItemPrivate::graphicsItem

Definition at line 62 of file qgraphicslayoutitem_p.h.

isLayout

quint32 QGraphicsLayoutItemPrivate::isLayout

Definition at line 57 of file qgraphicslayoutitem_p.h.

Referenced by hasHeightForWidth(), and hasWidthForHeight().

ownedByLayout

quint32 QGraphicsLayoutItemPrivate::ownedByLayout

Definition at line 58 of file qgraphicslayoutitem_p.h.

parent

QGraphicsLayoutItem* QGraphicsLayoutItemPrivate::parent

Definition at line 48 of file qgraphicslayoutitem_p.h.

Referenced by QGraphicsLayoutPrivate::getMargin(), parentItem(), and QGraphicsAnchorLayoutPrivate::styleInfo().

q_ptr

QGraphicsLayoutItem* QGraphicsLayoutItemPrivate::q_ptr

Definition at line 60 of file qgraphicslayoutitem_p.h.

sizeHintCacheDirty

quint32 QGraphicsLayoutItemPrivate::sizeHintCacheDirty

mutable

Definition at line 55 of file qgraphicslayoutitem_p.h.

Referenced by effectiveSizeHints(), and init().

sizeHintWithConstraintCacheDirty

quint32 QGraphicsLayoutItemPrivate::sizeHintWithConstraintCacheDirty

mutable

Definition at line 56 of file qgraphicslayoutitem_p.h.

Referenced by effectiveSizeHints(), and init().

sizePolicy

QSizePolicy QGraphicsLayoutItemPrivate::sizePolicy

Definition at line 47 of file qgraphicslayoutitem_p.h.

userSizeHints

QSizeF* QGraphicsLayoutItemPrivate::userSizeHints

Definition at line 50 of file qgraphicslayoutitem_p.h.

Referenced by ~QGraphicsLayoutItemPrivate(), effectiveSizeHints(), ensureUserSizeHints(), setSize(), and setSizeComponent().

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

• qtbase/src/widgets/graphicsview/qgraphicslayoutitem_p.h (05fc3aef53348fb58be6308076e000825b704e58)
• qtbase/src/widgets/graphicsview/qgraphicslayoutitem.cpp (05fc3aef53348fb58be6308076e000825b704e58)