Struct qt_widgets::QStyleOptionGraphicsItem

#[repr(C)]
pub struct QStyleOptionGraphicsItem { /* fields omitted */ }

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

C++ class: QStyleOptionGraphicsItem.

C++ documentation:

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

For performance reasons, the access to the member variables is direct (i.e., using the . or -> operator). This low-level feel makes the structures straightforward to use and emphasizes that these are simply parameters.

For an example demonstrating how style options can be used, see the Styles example.

Methods

impl QStyleOptionGraphicsItem

pub unsafe fn copy_from(
    &mut self,
    other: impl CastInto<Ref<QStyleOptionGraphicsItem>>
) -> MutRef<QStyleOptionGraphicsItem>

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

Calls C++ function: QStyleOptionGraphicsItem& QStyleOptionGraphicsItem::operator=(const QStyleOptionGraphicsItem& other).

C++ documentation:

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

For performance reasons, the access to the member variables is direct (i.e., using the . or -> operator). This low-level feel makes the structures straightforward to use and emphasizes that these are simply parameters.

For an example demonstrating how style options can be used, see the Styles example.

pub unsafe fn exposed_rect(&self) -> Ref<QRectF>

Returns a reference to the exposedRect field.

pub unsafe fn exposed_rect_mut(&mut self) -> MutRef<QRectF>

Returns a mutable reference to the exposedRect field.

pub unsafe fn level_of_detail(&self) -> c_double

Returns the value of the levelOfDetail field.

pub unsafe fn level_of_detail_from_transform(
    world_transform: impl CastInto<Ref<QTransform>>
) -> c_double

Returns the level of detail from the worldTransform.

Calls C++ function: static double QStyleOptionGraphicsItem::levelOfDetailFromTransform(const QTransform& worldTransform).

C++ documentation:

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.

This function was introduced in Qt 4.6.

See also QGraphicsScene::minimumRenderSize().

pub unsafe fn matrix(&self) -> Ref<QMatrix>

Returns a reference to the matrix field.

pub unsafe fn matrix_mut(&mut self) -> MutRef<QMatrix>

Returns a mutable reference to the matrix field.

pub unsafe fn new() -> CppBox<QStyleOptionGraphicsItem>

Constructs a QStyleOptionGraphicsItem.

Calls C++ function: [constructor] void QStyleOptionGraphicsItem::QStyleOptionGraphicsItem().

C++ documentation:

Constructs a QStyleOptionGraphicsItem.

pub unsafe fn new_copy(
    other: impl CastInto<Ref<QStyleOptionGraphicsItem>>
) -> CppBox<QStyleOptionGraphicsItem>

Constructs a copy of other.

Calls C++ function: [constructor] void QStyleOptionGraphicsItem::QStyleOptionGraphicsItem(const QStyleOptionGraphicsItem& other).

C++ documentation:

Constructs a copy of other.

pub unsafe fn set_exposed_rect(&mut self, value: impl CastInto<Ref<QRectF>>)

Sets the value of the exposedRect field.

pub unsafe fn set_level_of_detail(&mut self, value: c_double)

Sets the value of the levelOfDetail field.

pub unsafe fn set_matrix(&mut self, value: impl CastInto<Ref<QMatrix>>)

Sets the value of the matrix field.

Methods from Deref<Target = QStyleOption>

pub unsafe fn copy_from(
    &mut self,
    other: impl CastInto<Ref<QStyleOption>>
) -> MutRef<QStyleOption>

Assign other to this QStyleOption.

Calls C++ function: QStyleOption& QStyleOption::operator=(const QStyleOption& other).

C++ documentation:

Assign other to this QStyleOption.

pub unsafe fn direction(&self) -> LayoutDirection

Returns the value of the direction field.

pub unsafe fn font_metrics(&self) -> Ref<QFontMetrics>

Returns a reference to the fontMetrics field.

pub unsafe fn font_metrics_mut(&mut self) -> MutRef<QFontMetrics>

Returns a mutable reference to the fontMetrics field.

pub unsafe fn init(&mut self, w: impl CastInto<Ptr<QWidget>>)

Use initFrom(widget) instead.

Calls C++ function: void QStyleOption::init(const QWidget* w).

C++ documentation:

Use initFrom(widget) instead.

pub unsafe fn init_from(&mut self, w: impl CastInto<Ptr<QWidget>>)

Initializes the state, direction, rect, palette, fontMetrics and styleObject member variables based on the specified widget.

Calls C++ function: void QStyleOption::initFrom(const QWidget* w).

C++ documentation:

Initializes the state, direction, rect, palette, fontMetrics and styleObject member variables based on the specified widget.

This is a convenience function; the member variables can also be initialized manually.

This function was introduced in Qt 4.1.

See also QWidget::layoutDirection(), QWidget::rect(), QWidget::palette(), and QWidget::fontMetrics().

pub unsafe fn palette(&self) -> Ref<QPalette>

Returns a reference to the palette field.

pub unsafe fn palette_mut(&mut self) -> MutRef<QPalette>

Returns a mutable reference to the palette field.

pub unsafe fn rect(&self) -> Ref<QRect>

Returns a reference to the rect field.

pub unsafe fn rect_mut(&mut self) -> MutRef<QRect>

Returns a mutable reference to the rect field.

pub unsafe fn set_direction(&mut self, value: LayoutDirection)

Sets the value of the direction field.

pub unsafe fn set_font_metrics(
    &mut self,
    value: impl CastInto<Ref<QFontMetrics>>
)

Sets the value of the fontMetrics field.

pub unsafe fn set_palette(&mut self, value: impl CastInto<Ref<QPalette>>)

Sets the value of the palette field.

pub unsafe fn set_rect(&mut self, value: impl CastInto<Ref<QRect>>)

Sets the value of the rect field.

pub unsafe fn set_state(&mut self, value: QFlags<StateFlag>)

Sets the value of the state field.

pub unsafe fn set_style_object(&mut self, value: impl CastInto<MutPtr<QObject>>)

Sets the value of the styleObject field.

pub unsafe fn set_type(&mut self, value: c_int)

Sets the value of the type field.

pub unsafe fn set_version(&mut self, value: c_int)

Sets the value of the version field.

pub unsafe fn state(&self) -> QFlags<StateFlag>

Returns a reference to the state field.

pub unsafe fn style_object(&self) -> MutPtr<QObject>

Returns the value of the styleObject field.

pub unsafe fn type_(&self) -> c_int

Returns the value of the type field.

pub unsafe fn version(&self) -> c_int

Returns the value of the version field.

Trait Implementations

impl CppDeletable for QStyleOptionGraphicsItem

unsafe fn delete(&mut self)

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

Calls C++ function: [destructor] void QStyleOptionGraphicsItem::~QStyleOptionGraphicsItem().

C++ documentation:

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

For performance reasons, the access to the member variables is direct (i.e., using the . or -> operator). This low-level feel makes the structures straightforward to use and emphasizes that these are simply parameters.

For an example demonstrating how style options can be used, see the Styles example.

impl Deref for QStyleOptionGraphicsItem

type Target = QStyleOption

The resulting type after dereferencing.

fn deref(&self) -> &QStyleOption

Calls C++ function: QStyleOption* static_cast<QStyleOption*>(QStyleOptionGraphicsItem* ptr).

impl DerefMut for QStyleOptionGraphicsItem

fn deref_mut(&mut self) -> &mut QStyleOption

Calls C++ function: QStyleOption* static_cast<QStyleOption*>(QStyleOptionGraphicsItem* ptr).

impl StaticDowncast<QStyleOptionGraphicsItem> for QStyleOption

unsafe fn static_downcast(
    ptr: Ptr<QStyleOption>
) -> Ptr<QStyleOptionGraphicsItem>

Calls C++ function: QStyleOptionGraphicsItem* static_cast<QStyleOptionGraphicsItem*>(QStyleOption* ptr).

unsafe fn static_downcast_mut(
    ptr: MutPtr<QStyleOption>
) -> MutPtr<QStyleOptionGraphicsItem>

Calls C++ function: QStyleOptionGraphicsItem* static_cast<QStyleOptionGraphicsItem*>(QStyleOption* ptr).

impl StaticUpcast<QStyleOption> for QStyleOptionGraphicsItem

unsafe fn static_upcast(ptr: Ptr<QStyleOptionGraphicsItem>) -> Ptr<QStyleOption>

Calls C++ function: QStyleOption* static_cast<QStyleOption*>(QStyleOptionGraphicsItem* ptr).

unsafe fn static_upcast_mut(
    ptr: MutPtr<QStyleOptionGraphicsItem>
) -> MutPtr<QStyleOption>

Calls C++ function: QStyleOption* static_cast<QStyleOption*>(QStyleOptionGraphicsItem* ptr).