Struct ndk::font::AxisTag

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

Available on crate feature api-level-29 only.

A 4-byte integer representing an OpenType axis tag.

Implementations

impl AxisTag

pub const fn from_be_bytes_checked( value: [u8; 4] ) -> Result<Self, AxisTagValueError>

Checks whether the given 4-byte array can construct a valid axis tag and returns [Ok(AxisTag)] if the array is valid.

Each byte in a tag must be in the range 0x20 to 0x7E. A space character cannot be followed by a non-space character. A tag must have one to four non-space characters. See the OpenType spec for more details.

pub const fn from_be_checked(value: u32) -> Result<Self, AxisTagValueError>

Checks whether the given 4-byte array can construct a valid axis tag and returns [Ok(AxisTag)] if the array is valid.

See AxisTag::from_be() for more details.

pub const fn from_be_bytes(value: [u8; 4]) -> Self

Construct an axis tag from the given 4-byte array. If the resulting axis tag is invalid, this function panics.

See AxisTag::from_be() for more details.

pub const fn from_be(value: u32) -> Self

Construct an axis tag from the given 4-byte integer. If the resulting axis tag is invalid, this function panics.

See AxisTag::from_be() for more details.

pub const fn to_u32(self) -> u32

pub const fn to_be_bytes(self) -> [u8; 4]

Trait Implementations

impl Clone for AxisTag

fn clone(&self) -> AxisTag

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for AxisTag

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

Formats the value using the given formatter.

impl Display for AxisTag

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

Formats the value using the given formatter.

impl PartialEq for AxisTag

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

impl Eq for AxisTag

impl StructuralPartialEq for AxisTag