Struct TTCHeader 

pub struct TTCHeader<'a> {
    pub(crate) data: FontData<'a>,
}

TTC Header

Fields

data: FontData<'a>

Implementations

impl<'a> TTCHeader<'a>

pub const MIN_SIZE: usize

pub fn resolve_offset<O: Offset, R: FontRead<'a>>( &self, offset: O, ) -> Result<R, ReadError>

Resolve the provided offset from the start of this table.

pub fn offset_data(&self) -> FontData<'a>

Return a reference to this table’s raw data.

We use this in the compile crate to resolve offsets.

pub fn shape(&self) -> &Self

👎Deprecated: just use the base type directly

Return a reference to the table’s ‘Shape’ struct.

This is a low level implementation detail, but it can be useful in some cases where you want to know things about a table’s layout, such as the byte offsets of specific fields.

pub fn ttc_tag(&self) -> Tag

Font Collection ID string: "ttcf"

pub fn version(&self) -> MajorMinor

Major/minor version of the TTC Header

pub fn num_fonts(&self) -> u32

Number of fonts in TTC

pub fn table_directory_offsets(&self) -> &'a [BigEndian<u32>]

Array of offsets to the TableDirectory for each font from the beginning of the file

pub fn dsig_tag(&self) -> Option<u32>

Tag indicating that a DSIG table exists, 0x44534947 (‘DSIG’) (null if no signature)

pub fn dsig_length(&self) -> Option<u32>

The length (in bytes) of the DSIG table (null if no signature)

pub fn dsig_offset(&self) -> Option<u32>

The offset (in bytes) of the DSIG table from the beginning of the TTC file (null if no signature)

pub fn ttc_tag_byte_range(&self) -> Range<usize>

pub fn version_byte_range(&self) -> Range<usize>

pub fn num_fonts_byte_range(&self) -> Range<usize>

pub fn table_directory_offsets_byte_range(&self) -> Range<usize>

pub fn dsig_tag_byte_range(&self) -> Range<usize>

pub fn dsig_length_byte_range(&self) -> Range<usize>

pub fn dsig_offset_byte_range(&self) -> Range<usize>

Trait Implementations

impl<'a> Clone for TTCHeader<'a>

fn clone(&self) -> TTCHeader<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> FontRead<'a> for TTCHeader<'a>

fn read(data: FontData<'a>) -> Result<Self, ReadError>

Read an instance of Self from the provided data, performing validation.

impl<'a> MinByteRange<'a> for TTCHeader<'a>

fn min_byte_range(&self) -> Range<usize>

fn min_table_bytes(&self) -> &'a [u8]