Struct Attributes 

pub struct Attributes {
    pub width: Width,
    pub style: Style,
    pub weight: Weight,
}

The width, style and weight of a font at one location.

Fields

width: Width

How wide the design is relative to its normal width.

style: Style

Whether the design is upright, italic or oblique.

weight: Weight

How heavy the design is.

Implementations

impl Attributes

pub fn from_variations<V>(font: &Font, variations: V) -> Self

where V: IntoIterator, V::Item: Into<Variation>,

Returns the attributes at the location given by variations, in user space.

Each attribute starts from the font’s default attributes. Values for the wdth, ital, slnt and wght axes override them. Variations are applied the same way as when building an instance. A variation for an axis the font does not have is ignored, the last value for an axis is used, and each value is clamped to the range of its axis.

pub fn from_named_instance(font: &Font, index: u32) -> Self

Returns the attributes of the named instance at index.

Returns the font’s default attributes if there is no such instance.

pub fn from_named_instance_with_overrides<V>( font: &Font, index: u32, overrides: V, ) -> Self

where V: IntoIterator, V::Item: Into<Variation>,

Returns the attributes of the named instance at index, with overrides applied after the instance’s own values.

If there is no such instance, only the overrides apply.

pub(crate) fn from_font(font: &Font) -> Self

Returns the attributes of the default instance of font.

An SFNT font defines them in its tables. A Type 1 or standalone CFF font has only a weight name and an italic angle, which are read the same way as FreeType reads them. These fonts define no width.

fn from_postscript(weight: Option<&str>, italic_angle: f32) -> Self

Returns the attributes defined by a PostScript font’s Weight name and ItalicAngle.

A nonzero italic angle means italic, matching how FreeType sets its italic flag. https://gitlab.freedesktop.org/freetype/freetype/-/blob/57617782464411201ce7bbc93b086c1b4d7d84a5/src/type1/t1objs.c#L462

fn from_sfnt<'a>(tables: &impl TableProvider<'a>) -> Self

Reads the attributes of the default instance from the font’s tables.

These come from OS/2, with the post italic angle for an oblique style. If there is no OS/2 table, they come from head.

fn from_os2_post(os2: Os2<'_>, post: Option<Post<'_>>) -> Self

fn from_head(head: Head<'_>) -> Self

Trait Implementations

impl Clone for Attributes

fn clone(&self) -> Attributes

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Attributes

impl Debug for Attributes

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

Formats the value using the given formatter.

impl Default for Attributes

fn default() -> Attributes

Returns the “default value” for a type.

impl PartialEq for Attributes

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Attributes