Struct fontdb::ID

pub struct ID(_);

A unique per database face ID.

We’re using u32 internally, which is auto-incremented for each face. A face removal doesn’t decrement the counter.

Since Database is not global/unique, we cannot guarantee that a specific ID is actually from the same db instance. This is up to the caller.

ID overflow will cause a panic, but it’s highly unlikely that someone would load more than 4 billion font faces.

Implementations

impl ID

pub fn dummy() -> Self

Creates a dummy ID.

Should be used in tandem with Database::push_face_info.

Trait Implementations

impl Clone for ID

fn clone(&self) -> ID

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ID

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

Formats the value using the given formatter.

impl Hash for ID

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 ID

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere
    Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<ID> for ID

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

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl Copy for ID

impl Eq for ID

impl StructuralEq for ID

impl StructuralPartialEq for ID