Enum GenericFontFamily

#[repr(u32)]
pub enum GenericFontFamily {
    Serif = 1,
    SansSerif = 2,
    Monospace = 3,
    Cursive = 4,
    Fantasy = 5,
    SystemUi = 6,
    Emoji = 7,
    Math = 8,
    Fangsong = 9,
}

Generic groups of font families that can serve as fallbacks for a specific family.

Every font family belongs to some generic font family (see examples below).

If an exact requested family is unavailable but a fallback group is specified in the request, the provider may return some other family that belongs to the fallback group. For example, if the client requests the “Arial” family with a SANS_SERIF fallback, and “Arial” is unavailable, the provider may return another available sans serif family, such as “Roboto Regular”, instead.

See also: https://www.w3.org/TR/css-fonts-4/#generic-font-families

Variants

Serif = 1

Glyphs have little “serifs”, hooks, or notches at the ends of most strokes. Examples: Georgia, Noto Serif, Times New Roman.

SansSerif = 2

Glyphs that have no serifs at the ends of most strokes. Examples: Arial, Noto Sans, Roboto, Tahoma.

Monospace = 3

Fixed-width fonts. Examples: Consolas, Courier New, Inconsolata.

Cursive = 4

Handwritten or cursive fonts. Examples: Brush Script, Comic Sans, Lucida Calligraphy.

Fantasy = 5

Decorative fonts. Examples: Impact, Papyrus.

SystemUi = 6

The default user interface font on the target platform. This is included for completeness with the CSS specification; font manifests should not declare that a font belongs to the SYSTEM_UI generic family, but instead should declare a more specific option (e.g. SERIF for Roboto).

Not commonly used.

Emoji = 7

Fonts that are used specifically for rendering emoji code points. Examples: Noto Color Emoji.

Math = 8

Fonts that are used primarily for rendering mathematical expressions.

Not commonly used.

Fangsong = 9

A group of Chinese fonts between serif and cursive, often used for official Chinese Government documents.

Not commonly used.

Implementations

impl GenericFontFamily

pub fn from_primitive(prim: u32) -> Option<Self>

pub const fn into_primitive(self) -> u32

pub fn is_unknown(&self) -> bool

👎Deprecated: Strict enums should not use is_unknown

Trait Implementations

impl Clone for GenericFontFamily

fn clone(&self) -> GenericFontFamily

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for GenericFontFamily

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

Formats the value using the given formatter.

impl<D: ResourceDialect> Decode<GenericFontFamily, D> for GenericFontFamily

fn new_empty() -> Self

Creates a valid instance of Self. The specific value does not matter, since it will be overwritten by decode.

unsafe fn decode( &mut self, decoder: &mut Decoder<'_, D>, offset: usize, _depth: Depth, ) -> Result<()>

Decodes an object of type T from the decoder’s buffers into self.

impl<D: ResourceDialect> Encode<GenericFontFamily, D> for GenericFontFamily

unsafe fn encode( self, encoder: &mut Encoder<'_, D>, offset: usize, _depth: Depth, ) -> Result<()>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID.

impl Hash for GenericFontFamily

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for GenericFontFamily

fn cmp(&self, other: &GenericFontFamily) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for GenericFontFamily

fn eq(&self, other: &GenericFontFamily) -> 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 PartialOrd for GenericFontFamily

fn partial_cmp(&self, other: &GenericFontFamily) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl TypeMarker for GenericFontFamily

type Owned = GenericFontFamily

The owned Rust type which this FIDL type decodes into.

fn inline_align(_context: Context) -> usize

Returns the minimum required alignment of the inline portion of the encoded object. It must be a (nonzero) power of two.

fn inline_size(_context: Context) -> usize

Returns the size of the inline portion of the encoded object, including padding for alignment. Must be a multiple of inline_align.

fn encode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and encoding requires no validation. When true, we can optimize encoding arrays and vectors of Self::Owned to a single memcpy.

fn decode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and decoding requires no validation. When true, we can optimize decoding arrays and vectors of Self::Owned to a single memcpy.

impl ValueTypeMarker for GenericFontFamily

type Borrowed<'a> = GenericFontFamily

The Rust type to use for encoding. This is a particular Encode<Self> type cheaply obtainable from &Self::Owned. There are three cases:

fn borrow(value: &<Self as TypeMarker>::Owned) -> Self::Borrowed<'_>

Cheaply converts from &Self::Owned to Self::Borrowed.

impl Copy for GenericFontFamily

impl Eq for GenericFontFamily

impl StructuralPartialEq for GenericFontFamily