// THIS FILE IS AUTOGENERATED.
// Any changes to this file will be overwritten.
// For more information about how codegen works, see font-codegen/README.md
#[allow(unused_imports)]
use crate::codegen_prelude::*;
/// The [fvar (Font Variations)](https://docs.microsoft.com/en-us/typography/opentype/spec/fvar) table
#[derive(Debug, Clone, Copy)]
#[doc(hidden)]
pub struct FvarMarker {}
impl FvarMarker {
fn version_byte_range(&self) -> Range<usize> {
let start = 0;
start..start + MajorMinor::RAW_BYTE_LEN
}
fn axis_instance_arrays_offset_byte_range(&self) -> Range<usize> {
let start = self.version_byte_range().end;
start..start + Offset16::RAW_BYTE_LEN
}
fn _reserved_byte_range(&self) -> Range<usize> {
let start = self.axis_instance_arrays_offset_byte_range().end;
start..start + u16::RAW_BYTE_LEN
}
fn axis_count_byte_range(&self) -> Range<usize> {
let start = self._reserved_byte_range().end;
start..start + u16::RAW_BYTE_LEN
}
fn axis_size_byte_range(&self) -> Range<usize> {
let start = self.axis_count_byte_range().end;
start..start + u16::RAW_BYTE_LEN
}
fn instance_count_byte_range(&self) -> Range<usize> {
let start = self.axis_size_byte_range().end;
start..start + u16::RAW_BYTE_LEN
}
fn instance_size_byte_range(&self) -> Range<usize> {
let start = self.instance_count_byte_range().end;
start..start + u16::RAW_BYTE_LEN
}
}
impl TopLevelTable for Fvar<'_> {
/// `fvar`
const TAG: Tag = Tag::new(b"fvar");
}
impl<'a> FontRead<'a> for Fvar<'a> {
fn read(data: FontData<'a>) -> Result<Self, ReadError> {
let mut cursor = data.cursor();
cursor.advance::<MajorMinor>();
cursor.advance::<Offset16>();
cursor.advance::<u16>();
cursor.advance::<u16>();
cursor.advance::<u16>();
cursor.advance::<u16>();
cursor.advance::<u16>();
cursor.finish(FvarMarker {})
}
}
/// The [fvar (Font Variations)](https://docs.microsoft.com/en-us/typography/opentype/spec/fvar) table
pub type Fvar<'a> = TableRef<'a, FvarMarker>;
impl<'a> Fvar<'a> {
/// Major version number of the font variations table — set to 1.
/// Minor version number of the font variations table — set to 0.
pub fn version(&self) -> MajorMinor {
let range = self.shape.version_byte_range();
self.data.read_at(range.start).unwrap()
}
/// Offset in bytes from the beginning of the table to the start of the VariationAxisRecord array. The
/// InstanceRecord array directly follows.
pub fn axis_instance_arrays_offset(&self) -> Offset16 {
let range = self.shape.axis_instance_arrays_offset_byte_range();
self.data.read_at(range.start).unwrap()
}
/// Attempt to resolve [`axis_instance_arrays_offset`][Self::axis_instance_arrays_offset].
pub fn axis_instance_arrays(&self) -> Result<AxisInstanceArrays<'a>, ReadError> {
let data = self.data;
let args = (
self.axis_count(),
self.instance_count(),
self.instance_size(),
);
self.axis_instance_arrays_offset()
.resolve_with_args(data, &args)
}
/// The number of variation axes in the font (the number of records in the axes array).
pub fn axis_count(&self) -> u16 {
let range = self.shape.axis_count_byte_range();
self.data.read_at(range.start).unwrap()
}
/// The size in bytes of each VariationAxisRecord — set to 20 (0x0014) for this version.
pub fn axis_size(&self) -> u16 {
let range = self.shape.axis_size_byte_range();
self.data.read_at(range.start).unwrap()
}
/// The number of named instances defined in the font (the number of records in the instances array).
pub fn instance_count(&self) -> u16 {
let range = self.shape.instance_count_byte_range();
self.data.read_at(range.start).unwrap()
}
/// The size in bytes of each InstanceRecord — set to either axisCount * sizeof(Fixed) + 4, or to axisCount * sizeof(Fixed) + 6.
pub fn instance_size(&self) -> u16 {
let range = self.shape.instance_size_byte_range();
self.data.read_at(range.start).unwrap()
}
}
#[cfg(feature = "traversal")]
impl<'a> SomeTable<'a> for Fvar<'a> {
fn type_name(&self) -> &str {
"Fvar"
}
fn get_field(&self, idx: usize) -> Option<Field<'a>> {
match idx {
0usize => Some(Field::new("version", self.version())),
1usize => Some(Field::new(
"axis_instance_arrays_offset",
FieldType::offset(
self.axis_instance_arrays_offset(),
self.axis_instance_arrays(),
),
)),
2usize => Some(Field::new("axis_count", self.axis_count())),
3usize => Some(Field::new("axis_size", self.axis_size())),
4usize => Some(Field::new("instance_count", self.instance_count())),
5usize => Some(Field::new("instance_size", self.instance_size())),
_ => None,
}
}
}
#[cfg(feature = "traversal")]
impl<'a> std::fmt::Debug for Fvar<'a> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
(self as &dyn SomeTable<'a>).fmt(f)
}
}
/// Shim table to handle combined axis and instance arrays.
#[derive(Debug, Clone, Copy)]
#[doc(hidden)]
pub struct AxisInstanceArraysMarker {
axis_count: u16,
instance_size: u16,
axes_byte_len: usize,
instances_byte_len: usize,
}
impl AxisInstanceArraysMarker {
fn axes_byte_range(&self) -> Range<usize> {
let start = 0;
start..start + self.axes_byte_len
}
fn instances_byte_range(&self) -> Range<usize> {
let start = self.axes_byte_range().end;
start..start + self.instances_byte_len
}
}
impl ReadArgs for AxisInstanceArrays<'_> {
type Args = (u16, u16, u16);
}
impl<'a> FontReadWithArgs<'a> for AxisInstanceArrays<'a> {
fn read_with_args(data: FontData<'a>, args: &(u16, u16, u16)) -> Result<Self, ReadError> {
let (axis_count, instance_count, instance_size) = *args;
let mut cursor = data.cursor();
let axes_byte_len = (axis_count as usize)
.checked_mul(VariationAxisRecord::RAW_BYTE_LEN)
.ok_or(ReadError::OutOfBounds)?;
cursor.advance_by(axes_byte_len);
let instances_byte_len = (instance_count as usize)
.checked_mul(<InstanceRecord as ComputeSize>::compute_size(&(
axis_count,
instance_size,
))?)
.ok_or(ReadError::OutOfBounds)?;
cursor.advance_by(instances_byte_len);
cursor.finish(AxisInstanceArraysMarker {
axis_count,
instance_size,
axes_byte_len,
instances_byte_len,
})
}
}
impl<'a> AxisInstanceArrays<'a> {
/// A constructor that requires additional arguments.
///
/// This type requires some external state in order to be
/// parsed.
pub fn read(
data: FontData<'a>,
axis_count: u16,
instance_count: u16,
instance_size: u16,
) -> Result<Self, ReadError> {
let args = (axis_count, instance_count, instance_size);
Self::read_with_args(data, &args)
}
}
/// Shim table to handle combined axis and instance arrays.
pub type AxisInstanceArrays<'a> = TableRef<'a, AxisInstanceArraysMarker>;
impl<'a> AxisInstanceArrays<'a> {
/// Variation axis record array.
pub fn axes(&self) -> &'a [VariationAxisRecord] {
let range = self.shape.axes_byte_range();
self.data.read_array(range).unwrap()
}
/// Instance record array.
pub fn instances(&self) -> ComputedArray<'a, InstanceRecord<'a>> {
let range = self.shape.instances_byte_range();
self.data
.read_with_args(range, &(self.axis_count(), self.instance_size()))
.unwrap()
}
pub(crate) fn axis_count(&self) -> u16 {
self.shape.axis_count
}
pub(crate) fn instance_size(&self) -> u16 {
self.shape.instance_size
}
}
#[cfg(feature = "traversal")]
impl<'a> SomeTable<'a> for AxisInstanceArrays<'a> {
fn type_name(&self) -> &str {
"AxisInstanceArrays"
}
fn get_field(&self, idx: usize) -> Option<Field<'a>> {
match idx {
0usize => Some(Field::new(
"axes",
traversal::FieldType::array_of_records(
stringify!(VariationAxisRecord),
self.axes(),
self.offset_data(),
),
)),
1usize => Some(Field::new(
"instances",
traversal::FieldType::computed_array(
"InstanceRecord",
self.instances(),
self.offset_data(),
),
)),
_ => None,
}
}
}
#[cfg(feature = "traversal")]
impl<'a> std::fmt::Debug for AxisInstanceArrays<'a> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
(self as &dyn SomeTable<'a>).fmt(f)
}
}
/// The [VariationAxisRecord](https://learn.microsoft.com/en-us/typography/opentype/spec/fvar#variationaxisrecord)
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct VariationAxisRecord {
/// Tag identifying the design variation for the axis.
pub axis_tag: BigEndian<Tag>,
/// The minimum coordinate value for the axis.
pub min_value: BigEndian<Fixed>,
/// The default coordinate value for the axis.
pub default_value: BigEndian<Fixed>,
/// The maximum coordinate value for the axis.
pub max_value: BigEndian<Fixed>,
/// Axis qualifiers — see details below.
pub flags: BigEndian<u16>,
/// The name ID for entries in the 'name' table that provide a display name for this axis.
pub axis_name_id: BigEndian<NameId>,
}
impl VariationAxisRecord {
/// Tag identifying the design variation for the axis.
pub fn axis_tag(&self) -> Tag {
self.axis_tag.get()
}
/// The minimum coordinate value for the axis.
pub fn min_value(&self) -> Fixed {
self.min_value.get()
}
/// The default coordinate value for the axis.
pub fn default_value(&self) -> Fixed {
self.default_value.get()
}
/// The maximum coordinate value for the axis.
pub fn max_value(&self) -> Fixed {
self.max_value.get()
}
/// Axis qualifiers — see details below.
pub fn flags(&self) -> u16 {
self.flags.get()
}
/// The name ID for entries in the 'name' table that provide a display name for this axis.
pub fn axis_name_id(&self) -> NameId {
self.axis_name_id.get()
}
}
impl FixedSize for VariationAxisRecord {
const RAW_BYTE_LEN: usize = Tag::RAW_BYTE_LEN
+ Fixed::RAW_BYTE_LEN
+ Fixed::RAW_BYTE_LEN
+ Fixed::RAW_BYTE_LEN
+ u16::RAW_BYTE_LEN
+ NameId::RAW_BYTE_LEN;
}
#[cfg(feature = "traversal")]
impl<'a> SomeRecord<'a> for VariationAxisRecord {
fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
RecordResolver {
name: "VariationAxisRecord",
get_field: Box::new(move |idx, _data| match idx {
0usize => Some(Field::new("axis_tag", self.axis_tag())),
1usize => Some(Field::new("min_value", self.min_value())),
2usize => Some(Field::new("default_value", self.default_value())),
3usize => Some(Field::new("max_value", self.max_value())),
4usize => Some(Field::new("flags", self.flags())),
5usize => Some(Field::new("axis_name_id", self.axis_name_id())),
_ => None,
}),
data,
}
}
}
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