Struct RasterConfig 

pub struct RasterConfig {
    pub mode: u8,
    pub subpixel_threshold: u8,
    pub subpixel_x_steps: u8,
    pub subpixel_mode: SubpixelMode,
}

Font raster settings

These are not used by the theme, but passed through to the rendering backend.

Fields

mode: u8

The mode parameter selects rendering mode (though depending on crate features, not all options will be available). The default mode is 4. In case the crate is built without the required fontdue or swash feature, the rasterer falls back to mode 0.

• mode == 0: use ab_glyph for rastering
• mode == 1: use ab_glyph and align glyphs to side bearings
• mode == 2: deprecated
• mode == 3: use swash for rastering
• mode == 4: use swash for rastering with hinting

subpixel_threshold: u8

Subpixel positioning threshold

Text with height h less than this threshold will use sub-pixel positioning (see below), which should make letter spacing more accurate for small fonts.

Units: physical pixels per Em (“dpem”). Default value: 18.

subpixel_x_steps: u8

Subpixel steps (horizontal)

The number of sub-pixel positioning steps to use on the x-axis for horizontal text (when enabled; see Self::subpixel_threshold).

Minimum: 1 (no sub-pixel positioning). Maximum: 16. Default: 3.

subpixel_mode: SubpixelMode

Subpixel rendering mode

Trait Implementations

impl Clone for RasterConfig

fn clone(&self) -> RasterConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RasterConfig

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

Formats the value using the given formatter.

impl Default for RasterConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for RasterConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for RasterConfig

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Serialize for RasterConfig

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for RasterConfig

impl StructuralPartialEq for RasterConfig