Struct qt_gui::q_painter::RenderHint

pub struct RenderHint(/* private fields */);

Renderhints are used to specify flags to QPainter that may or may not be respected by any given engine.

C++ enum: QPainter::RenderHint.

C++ documentation:

Renderhints are used to specify flags to QPainter that may or may not be respected by any given engine.

The RenderHints type is a typedef for QFlags<RenderHint>. It stores an OR combination of RenderHint values.

See also renderHints(), setRenderHint(), Rendering Quality, and Concentric Circles Example.

Implementations

impl RenderHint

pub fn to_int(&self) -> c_int

impl RenderHint

pub const Antialiasing: RenderHint = _

Indicates that the engine should antialias edges of primitives if possible. (C++ enum variant: Antialiasing = 1)

pub const TextAntialiasing: RenderHint = _

Indicates that the engine should antialias text if possible. To forcibly disable antialiasing for text, do not use this hint. Instead, set QFont::NoAntialias on your font’s style strategy. (C++ enum variant: TextAntialiasing = 2)

pub const SmoothPixmapTransform: RenderHint = _

Indicates that the engine should use a smooth pixmap transformation algorithm (such as bilinear) rather than nearest neighbor. (C++ enum variant: SmoothPixmapTransform = 4)

pub const HighQualityAntialiasing: RenderHint = _

This value is obsolete and will be ignored, use the Antialiasing render hint instead. (C++ enum variant: HighQualityAntialiasing = 8)

pub const NonCosmeticDefaultPen: RenderHint = _

This value is obsolete, the default for QPen is now non-cosmetic. (C++ enum variant: NonCosmeticDefaultPen = 16)

pub const Qt4CompatiblePainting: RenderHint = _

Compatibility hint telling the engine to use the same X11 based fill rules as in Qt 4, where aliased rendering is offset by slightly less than half a pixel. Also will treat default constructed pens as cosmetic. Potentially useful when porting a Qt 4 application to Qt 5. (C++ enum variant: Qt4CompatiblePainting = 32)

pub const LosslessImageRendering: RenderHint = _

Use a lossless image rendering, whenever possible. Currently, this hint is only used when QPainter is employed to output a PDF file through QPrinter or QPdfWriter, where drawImage()/drawPixmap() calls will encode images using a lossless compression algorithm instead of lossy JPEG compression. This value was added in Qt 5.13. (C++ enum variant: LosslessImageRendering = 64)

Trait Implementations

impl<T: Into<QFlags<RenderHint>>> BitOr<T> for RenderHint

type Output = QFlags<RenderHint>

The resulting type after applying the | operator.

fn bitor(self, rhs: T) -> QFlags<RenderHint>

Performs the | operation.

impl Clone for RenderHint

fn clone(&self) -> RenderHint

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RenderHint

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<RenderHint> for QFlags<RenderHint>

fn from(value: RenderHint) -> Self

Converts to this type from the input type.

impl From<RenderHint> for c_int

fn from(value: RenderHint) -> Self

Converts to this type from the input type.

impl From<i32> for RenderHint

fn from(value: c_int) -> Self

Converts to this type from the input type.

impl PartialEq for RenderHint

fn eq(&self, other: &RenderHint) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for RenderHint

impl Eq for RenderHint

impl StructuralEq for RenderHint

impl StructuralPartialEq for RenderHint