Struct qt_gui::q_font::StyleStrategy

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

The style strategy tells the font matching algorithm what type of fonts should be used to find an appropriate default family.

C++ enum: QFont::StyleStrategy.

C++ documentation:

The style strategy tells the font matching algorithm what type of fonts should be used to find an appropriate default family.

The following strategies are available:

Any of these may be OR-ed with one of these flags:

Implementations

impl StyleStrategy

pub fn to_int(&self) -> c_int

impl StyleStrategy

pub const PreferDefault: StyleStrategy = _

the default style strategy. It does not prefer any type of font. (C++ enum variant: PreferDefault = 1)

pub const PreferBitmap: StyleStrategy = _

prefers bitmap fonts (as opposed to outline fonts). (C++ enum variant: PreferBitmap = 2)

pub const PreferDevice: StyleStrategy = _

prefers device fonts. (C++ enum variant: PreferDevice = 4)

pub const PreferOutline: StyleStrategy = _

prefers outline fonts (as opposed to bitmap fonts). (C++ enum variant: PreferOutline = 8)

pub const ForceOutline: StyleStrategy = _

forces the use of outline fonts. (C++ enum variant: ForceOutline = 16)

pub const PreferMatch: StyleStrategy = _

prefer an exact match. The font matcher will try to use the exact font size that has been specified. (C++ enum variant: PreferMatch = 32)

pub const PreferQuality: StyleStrategy = _

prefer the best quality font. The font matcher will use the nearest standard point size that the font supports. (C++ enum variant: PreferQuality = 64)

pub const PreferAntialias: StyleStrategy = _

antialias if possible. (C++ enum variant: PreferAntialias = 128)

pub const NoAntialias: StyleStrategy = _

don’t antialias the fonts. (C++ enum variant: NoAntialias = 256)

pub const OpenGLCompatible: StyleStrategy = _

forces the use of OpenGL compatible fonts. (C++ enum variant: OpenGLCompatible = 512)

pub const ForceIntegerMetrics: StyleStrategy = _

forces the use of integer values in font engines that support fractional font metrics. (C++ enum variant: ForceIntegerMetrics = 1024)

pub const NoSubpixelAntialias: StyleStrategy = _

avoid subpixel antialiasing on the fonts if possible. (C++ enum variant: NoSubpixelAntialias = 2048)

pub const NoFontMerging: StyleStrategy = _

If the font selected for a certain writing system does not contain a character requested to draw, then Qt automatically chooses a similar looking font that contains the character. The NoFontMerging flag disables this feature. Please note that enabling this flag will not prevent Qt from automatically picking a suitable font when the selected font does not support the writing system of the text. (C++ enum variant: NoFontMerging = 32768)

pub const PreferNoShaping: StyleStrategy = _

Sometimes, a font will apply complex rules to a set of characters in order to display them correctly. In some writing systems, such as Brahmic scripts, this is required in order for the text to be legible, but in e.g. Latin script, it is merely a cosmetic feature. The PreferNoShaping flag will disable all such features when they are not required, which will improve performance in most cases (since Qt 5.10). (C++ enum variant: PreferNoShaping = 4096)

Trait Implementations

impl Clone for StyleStrategy

fn clone(&self) -> StyleStrategy

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for StyleStrategy

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

Formats the value using the given formatter.

impl From<StyleStrategy> for c_int

fn from(value: StyleStrategy) -> Self

Converts to this type from the input type.

impl From<i32> for StyleStrategy

fn from(value: c_int) -> Self

Converts to this type from the input type.

impl PartialEq for StyleStrategy

fn eq(&self, other: &StyleStrategy) -> 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 StyleStrategy

impl Eq for StyleStrategy

impl StructuralEq for StyleStrategy

impl StructuralPartialEq for StyleStrategy