Struct qt_gui::q_painter::RenderHint

#[repr(transparent)]
pub struct RenderHint(_);

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.

Methods

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This value is obsolete and will be ignored, use the Antialiasing render hint instead.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This value is obsolete, the default for QPen is now non-cosmetic.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 Eq for RenderHint

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 PartialEq<RenderHint> 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: &RenderHint) -> bool

This method tests for !=.

impl From<i32> for RenderHint

fn from(value: c_int) -> Self

Performs the conversion.

impl From<RenderHint> for c_int

fn from(value: RenderHint) -> Self

Performs the conversion.

impl From<RenderHint> for QFlags<RenderHint>

fn from(value: RenderHint) -> Self

Performs the conversion.

impl Copy for RenderHint

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 Debug for RenderHint

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

Formats the value using the given formatter.