The QStyleOptionGraphicsItem class is used to describe the parameters needed to draw a QGraphicsItem. More...

#include <qstyleoption.h>

Inheritance diagram for QStyleOptionGraphicsItem:

Collaboration diagram for QStyleOptionGraphicsItem:

Public Types
enum	StyleOptionType { Type = SO_GraphicsItem }
	This enum is used to hold information about the type of the style option, and is defined for each QStyleOption subclass. More...

enum	StyleOptionVersion { Version = 1 }
	This enum is used to hold information about the version of the style option, and is defined for each QStyleOption subclass. More...

Public Types inherited from QStyleOption
enum	OptionType { SO_Default , SO_FocusRect , SO_Button , SO_Tab , SO_MenuItem , SO_Frame , SO_ProgressBar , SO_ToolBox , SO_Header , SO_DockWidget , SO_ViewItem , SO_TabWidgetFrame , SO_TabBarBase , SO_RubberBand , SO_ToolBar , SO_GraphicsItem , SO_Complex = 0xf0000 , SO_Slider , SO_SpinBox , SO_ToolButton , SO_ComboBox , SO_TitleBar , SO_GroupBox , SO_SizeGrip , SO_CustomBase = 0xf00 , SO_ComplexCustomBase = 0xf000000 }
	This enum is used internally by QStyleOption, its subclasses, and qstyleoption_cast() to determine the type of style option. More...

enum	StyleOptionType { Type = SO_Default }
	This enum is used to hold information about the type of the style option, and is defined for each QStyleOption subclass. More...

enum	StyleOptionVersion { Version = 1 }
	This enum is used to hold information about the version of the style option, and is defined for each QStyleOption subclass. More...

Public Member Functions
	QStyleOptionGraphicsItem ()
	Constructs a QStyleOptionGraphicsItem.

	QStyleOptionGraphicsItem (const QStyleOptionGraphicsItem &other)
	Constructs a copy of other.

QStyleOptionGraphicsItem &	operator= (const QStyleOptionGraphicsItem &)=default

Public Member Functions inherited from QStyleOption
	QStyleOption (int version=QStyleOption::Version, int type=SO_Default)
	Constructs a QStyleOption with the specified version and type.

	QStyleOption (const QStyleOption &other)
	Constructs a copy of other.

	~QStyleOption ()
	Destroys this style option object.

void	initFrom (const QWidget *w)

QStyleOption &	operator= (const QStyleOption &other)
	Assign other to this QStyleOption.

Static Public Member Functions
static qreal	levelOfDetailFromTransform (const QTransform &worldTransform)

Public Attributes
QRectF	exposedRect

Public Attributes inherited from QStyleOption
int	version

int	type

QStyle::State	state

Qt::LayoutDirection	direction

QRect	rect

QFontMetrics	fontMetrics

QPalette	palette

QObject *	styleObject

Protected Member Functions
	QStyleOptionGraphicsItem (int version)

Additional Inherited Members
Related Symbols inherited from QStyleOption
template< typename T > T	qstyleoption_cast (const QStyleOption *option)
	\variable QStyleOptionTitleBar::text

template< typename T > T	qstyleoption_cast (QStyleOption *option)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Detailed Description

The QStyleOptionGraphicsItem class is used to describe the parameters needed to draw a QGraphicsItem.

Since: 4.2

\inmodule QtWidgets

For performance reasons, there are few member functions and the access to the member variables is direct (i.e., using the . or -> operator). This makes the structures straightforward to use and emphasizes that these are simply parameters used by the style functions.

See also: QStyleOption, QGraphicsItem::paint()

Definition at line 648 of file qstyleoption.h.

Member Enumeration Documentation

◆ StyleOptionType

enum QStyleOptionGraphicsItem::StyleOptionType

This enum is used to hold information about the type of the style option, and is defined for each QStyleOption subclass.

\value Type The type of style option provided (\l SO_GraphicsItem for this class).

The type is used internally by QStyleOption, its subclasses, and qstyleoption_cast() to determine the type of style option. In general you do not need to worry about this unless you want to create your own QStyleOption subclass and your own styles.

See also: StyleOptionVersion

Enumerator
Type

Definition at line 651 of file qstyleoption.h.

◆ StyleOptionVersion

enum QStyleOptionGraphicsItem::StyleOptionVersion

This enum is used to hold information about the version of the style option, and is defined for each QStyleOption subclass.

\value Version 1

The version is used by QStyleOption subclasses to implement extensions without breaking compatibility. If you use qstyleoption_cast(), you normally do not need to check it.

See also: StyleOptionType

Enumerator
Version

Definition at line 652 of file qstyleoption.h.

Constructor & Destructor Documentation

◆ QStyleOptionGraphicsItem() [1/3]

QStyleOptionGraphicsItem::QStyleOptionGraphicsItem ( )

Constructs a QStyleOptionGraphicsItem.

Definition at line 3539 of file qstyleoption.cpp.

◆ QStyleOptionGraphicsItem() [2/3]

QStyleOptionGraphicsItem::QStyleOptionGraphicsItem ( const QStyleOptionGraphicsItem & other )

inline

Constructs a copy of other.

Definition at line 657 of file qstyleoption.h.

References other().

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◆ QStyleOptionGraphicsItem() [3/3]

QStyleOptionGraphicsItem::QStyleOptionGraphicsItem ( int version )

protected

Definition at line 3547 of file qstyleoption.cpp.

Member Function Documentation

◆ levelOfDetailFromTransform()

qreal QStyleOptionGraphicsItem::levelOfDetailFromTransform ( const QTransform & worldTransform )

static

Since: 4.6

Returns the level of detail from the worldTransform.

Its value represents the maximum value of the height and width of a unity rectangle, mapped using the worldTransform of the painter used to draw the item. By default, if no transformations are applied, its value is 1. If zoomed out 1:2, the level of detail will be 0.5, and if zoomed in 2:1, its value is 2.

See also: QGraphicsScene::minimumRenderSize()

Definition at line 3565 of file qstyleoption.cpp.

References QTransform::map(), qSqrt(), QTransform::TxTranslate, QTransform::type(), and v1.

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◆ operator=()

QStyleOptionGraphicsItem & QStyleOptionGraphicsItem::operator= ( const QStyleOptionGraphicsItem & )

default

Member Data Documentation

◆ exposedRect

QRectF QStyleOptionGraphicsItem::exposedRect

Definition at line 654 of file qstyleoption.h.

Referenced by QGraphicsScenePrivate::drawItemHelper().

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

qtbase/src/widgets/styles/qstyleoption.h (d4b40fa96bcb83eb8948c381bdae9c1ed0f223d0)
qtbase/src/widgets/styles/qstyleoption.cpp (f2e622a75dc5c27bb3eeb73e286264bd4415ede7)

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Member Functions

Additional Inherited Members