1321 lines
43 KiB
Rust
1321 lines
43 KiB
Rust
// THIS FILE IS AUTOGENERATED.
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// Any changes to this file will be overwritten.
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// For more information about how codegen works, see font-codegen/README.md
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#[allow(unused_imports)]
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use crate::codegen_prelude::*;
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/// [TupleVariationHeader](https://learn.microsoft.com/en-us/typography/opentype/spec/otvarcommonformats#tuplevariationheader)
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#[derive(Debug, Clone, Copy)]
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#[doc(hidden)]
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pub struct TupleVariationHeaderMarker {
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peak_tuple_byte_len: usize,
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intermediate_start_tuple_byte_len: usize,
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intermediate_end_tuple_byte_len: usize,
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}
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impl TupleVariationHeaderMarker {
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pub fn variation_data_size_byte_range(&self) -> Range<usize> {
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let start = 0;
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start..start + u16::RAW_BYTE_LEN
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}
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pub fn tuple_index_byte_range(&self) -> Range<usize> {
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let start = self.variation_data_size_byte_range().end;
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start..start + TupleIndex::RAW_BYTE_LEN
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}
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pub fn peak_tuple_byte_range(&self) -> Range<usize> {
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let start = self.tuple_index_byte_range().end;
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start..start + self.peak_tuple_byte_len
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}
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pub fn intermediate_start_tuple_byte_range(&self) -> Range<usize> {
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let start = self.peak_tuple_byte_range().end;
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start..start + self.intermediate_start_tuple_byte_len
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}
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pub fn intermediate_end_tuple_byte_range(&self) -> Range<usize> {
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let start = self.intermediate_start_tuple_byte_range().end;
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start..start + self.intermediate_end_tuple_byte_len
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}
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}
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impl MinByteRange for TupleVariationHeaderMarker {
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fn min_byte_range(&self) -> Range<usize> {
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0..self.intermediate_end_tuple_byte_range().end
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}
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}
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impl ReadArgs for TupleVariationHeader<'_> {
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type Args = u16;
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}
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impl<'a> FontReadWithArgs<'a> for TupleVariationHeader<'a> {
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fn read_with_args(data: FontData<'a>, args: &u16) -> Result<Self, ReadError> {
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let axis_count = *args;
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let mut cursor = data.cursor();
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cursor.advance::<u16>();
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let tuple_index: TupleIndex = cursor.read()?;
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let peak_tuple_byte_len = (TupleIndex::tuple_len(tuple_index, axis_count, 0_usize))
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.checked_mul(F2Dot14::RAW_BYTE_LEN)
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.ok_or(ReadError::OutOfBounds)?;
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cursor.advance_by(peak_tuple_byte_len);
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let intermediate_start_tuple_byte_len =
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(TupleIndex::tuple_len(tuple_index, axis_count, 1_usize))
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.checked_mul(F2Dot14::RAW_BYTE_LEN)
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.ok_or(ReadError::OutOfBounds)?;
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cursor.advance_by(intermediate_start_tuple_byte_len);
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let intermediate_end_tuple_byte_len =
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(TupleIndex::tuple_len(tuple_index, axis_count, 1_usize))
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.checked_mul(F2Dot14::RAW_BYTE_LEN)
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.ok_or(ReadError::OutOfBounds)?;
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cursor.advance_by(intermediate_end_tuple_byte_len);
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cursor.finish(TupleVariationHeaderMarker {
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peak_tuple_byte_len,
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intermediate_start_tuple_byte_len,
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intermediate_end_tuple_byte_len,
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})
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}
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}
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impl<'a> TupleVariationHeader<'a> {
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/// A constructor that requires additional arguments.
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///
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/// This type requires some external state in order to be
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/// parsed.
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pub fn read(data: FontData<'a>, axis_count: u16) -> Result<Self, ReadError> {
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let args = axis_count;
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Self::read_with_args(data, &args)
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}
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}
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/// [TupleVariationHeader](https://learn.microsoft.com/en-us/typography/opentype/spec/otvarcommonformats#tuplevariationheader)
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pub type TupleVariationHeader<'a> = TableRef<'a, TupleVariationHeaderMarker>;
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#[allow(clippy::needless_lifetimes)]
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impl<'a> TupleVariationHeader<'a> {
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/// The size in bytes of the serialized data for this tuple
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/// variation table.
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pub fn variation_data_size(&self) -> u16 {
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let range = self.shape.variation_data_size_byte_range();
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self.data.read_at(range.start).unwrap()
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}
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/// A packed field. The high 4 bits are flags (see below). The low
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/// 12 bits are an index into a shared tuple records array.
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pub fn tuple_index(&self) -> TupleIndex {
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let range = self.shape.tuple_index_byte_range();
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self.data.read_at(range.start).unwrap()
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}
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}
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#[cfg(feature = "experimental_traverse")]
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impl<'a> SomeTable<'a> for TupleVariationHeader<'a> {
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fn type_name(&self) -> &str {
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"TupleVariationHeader"
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}
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fn get_field(&self, idx: usize) -> Option<Field<'a>> {
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match idx {
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0usize => Some(Field::new(
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"variation_data_size",
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self.variation_data_size(),
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)),
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1usize => Some(Field::new("tuple_index", self.traverse_tuple_index())),
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_ => None,
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}
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}
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}
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#[cfg(feature = "experimental_traverse")]
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#[allow(clippy::needless_lifetimes)]
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impl<'a> std::fmt::Debug for TupleVariationHeader<'a> {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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(self as &dyn SomeTable<'a>).fmt(f)
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}
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}
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/// A [Tuple Record](https://learn.microsoft.com/en-us/typography/opentype/spec/otvarcommonformats#tuple-records)
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///
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/// The tuple variation store formats reference regions within the font’s
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/// variation space using tuple records. A tuple record identifies a position
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/// in terms of normalized coordinates, which use F2DOT14 values.
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#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
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pub struct Tuple<'a> {
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/// Coordinate array specifying a position within the font’s variation space.
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///
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/// The number of elements must match the axisCount specified in the
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/// 'fvar' table.
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pub values: &'a [BigEndian<F2Dot14>],
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}
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impl<'a> Tuple<'a> {
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/// Coordinate array specifying a position within the font’s variation space.
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///
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/// The number of elements must match the axisCount specified in the
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/// 'fvar' table.
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pub fn values(&self) -> &'a [BigEndian<F2Dot14>] {
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self.values
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}
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}
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impl ReadArgs for Tuple<'_> {
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type Args = u16;
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}
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impl ComputeSize for Tuple<'_> {
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#[allow(clippy::needless_question_mark)]
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fn compute_size(args: &u16) -> Result<usize, ReadError> {
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let axis_count = *args;
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Ok((axis_count as usize)
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.checked_mul(F2Dot14::RAW_BYTE_LEN)
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.ok_or(ReadError::OutOfBounds)?)
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}
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}
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impl<'a> FontReadWithArgs<'a> for Tuple<'a> {
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fn read_with_args(data: FontData<'a>, args: &u16) -> Result<Self, ReadError> {
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let mut cursor = data.cursor();
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let axis_count = *args;
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Ok(Self {
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values: cursor.read_array(axis_count as usize)?,
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})
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}
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}
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#[allow(clippy::needless_lifetimes)]
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impl<'a> Tuple<'a> {
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/// A constructor that requires additional arguments.
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///
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/// This type requires some external state in order to be
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/// parsed.
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pub fn read(data: FontData<'a>, axis_count: u16) -> Result<Self, ReadError> {
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let args = axis_count;
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Self::read_with_args(data, &args)
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}
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}
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#[cfg(feature = "experimental_traverse")]
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impl<'a> SomeRecord<'a> for Tuple<'a> {
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fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
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RecordResolver {
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name: "Tuple",
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get_field: Box::new(move |idx, _data| match idx {
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0usize => Some(Field::new("values", self.values())),
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_ => None,
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}),
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data,
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}
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}
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}
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impl Format<u8> for DeltaSetIndexMapFormat0Marker {
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const FORMAT: u8 = 0;
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}
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/// The [DeltaSetIndexMap](https://learn.microsoft.com/en-us/typography/opentype/spec/otvarcommonformats#associating-target-items-to-variation-data) table format 0
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#[derive(Debug, Clone, Copy)]
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#[doc(hidden)]
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pub struct DeltaSetIndexMapFormat0Marker {
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map_data_byte_len: usize,
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}
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impl DeltaSetIndexMapFormat0Marker {
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pub fn format_byte_range(&self) -> Range<usize> {
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let start = 0;
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start..start + u8::RAW_BYTE_LEN
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}
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pub fn entry_format_byte_range(&self) -> Range<usize> {
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let start = self.format_byte_range().end;
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start..start + EntryFormat::RAW_BYTE_LEN
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}
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pub fn map_count_byte_range(&self) -> Range<usize> {
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let start = self.entry_format_byte_range().end;
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start..start + u16::RAW_BYTE_LEN
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}
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pub fn map_data_byte_range(&self) -> Range<usize> {
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let start = self.map_count_byte_range().end;
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start..start + self.map_data_byte_len
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}
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}
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impl MinByteRange for DeltaSetIndexMapFormat0Marker {
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fn min_byte_range(&self) -> Range<usize> {
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0..self.map_data_byte_range().end
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}
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}
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impl<'a> FontRead<'a> for DeltaSetIndexMapFormat0<'a> {
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fn read(data: FontData<'a>) -> Result<Self, ReadError> {
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let mut cursor = data.cursor();
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cursor.advance::<u8>();
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let entry_format: EntryFormat = cursor.read()?;
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let map_count: u16 = cursor.read()?;
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let map_data_byte_len = (EntryFormat::map_size(entry_format, map_count))
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.checked_mul(u8::RAW_BYTE_LEN)
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.ok_or(ReadError::OutOfBounds)?;
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cursor.advance_by(map_data_byte_len);
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cursor.finish(DeltaSetIndexMapFormat0Marker { map_data_byte_len })
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}
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}
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/// The [DeltaSetIndexMap](https://learn.microsoft.com/en-us/typography/opentype/spec/otvarcommonformats#associating-target-items-to-variation-data) table format 0
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pub type DeltaSetIndexMapFormat0<'a> = TableRef<'a, DeltaSetIndexMapFormat0Marker>;
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#[allow(clippy::needless_lifetimes)]
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impl<'a> DeltaSetIndexMapFormat0<'a> {
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/// DeltaSetIndexMap format: set to 0.
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pub fn format(&self) -> u8 {
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let range = self.shape.format_byte_range();
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self.data.read_at(range.start).unwrap()
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}
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/// A packed field that describes the compressed representation of
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/// delta-set indices. See details below.
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pub fn entry_format(&self) -> EntryFormat {
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let range = self.shape.entry_format_byte_range();
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self.data.read_at(range.start).unwrap()
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}
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/// The number of mapping entries.
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pub fn map_count(&self) -> u16 {
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let range = self.shape.map_count_byte_range();
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self.data.read_at(range.start).unwrap()
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}
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/// The delta-set index mapping data. See details below.
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pub fn map_data(&self) -> &'a [u8] {
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let range = self.shape.map_data_byte_range();
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self.data.read_array(range).unwrap()
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}
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}
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#[cfg(feature = "experimental_traverse")]
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impl<'a> SomeTable<'a> for DeltaSetIndexMapFormat0<'a> {
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fn type_name(&self) -> &str {
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"DeltaSetIndexMapFormat0"
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}
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fn get_field(&self, idx: usize) -> Option<Field<'a>> {
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match idx {
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0usize => Some(Field::new("format", self.format())),
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1usize => Some(Field::new("entry_format", self.entry_format())),
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2usize => Some(Field::new("map_count", self.map_count())),
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3usize => Some(Field::new("map_data", self.map_data())),
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_ => None,
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}
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}
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}
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#[cfg(feature = "experimental_traverse")]
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#[allow(clippy::needless_lifetimes)]
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impl<'a> std::fmt::Debug for DeltaSetIndexMapFormat0<'a> {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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(self as &dyn SomeTable<'a>).fmt(f)
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}
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}
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impl Format<u8> for DeltaSetIndexMapFormat1Marker {
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const FORMAT: u8 = 1;
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}
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/// The [DeltaSetIndexMap](https://learn.microsoft.com/en-us/typography/opentype/spec/otvarcommonformats#associating-target-items-to-variation-data) table format 1
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#[derive(Debug, Clone, Copy)]
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#[doc(hidden)]
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pub struct DeltaSetIndexMapFormat1Marker {
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map_data_byte_len: usize,
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}
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impl DeltaSetIndexMapFormat1Marker {
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pub fn format_byte_range(&self) -> Range<usize> {
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let start = 0;
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start..start + u8::RAW_BYTE_LEN
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}
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pub fn entry_format_byte_range(&self) -> Range<usize> {
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let start = self.format_byte_range().end;
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start..start + EntryFormat::RAW_BYTE_LEN
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}
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pub fn map_count_byte_range(&self) -> Range<usize> {
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let start = self.entry_format_byte_range().end;
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start..start + u32::RAW_BYTE_LEN
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}
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pub fn map_data_byte_range(&self) -> Range<usize> {
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let start = self.map_count_byte_range().end;
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start..start + self.map_data_byte_len
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}
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}
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impl MinByteRange for DeltaSetIndexMapFormat1Marker {
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fn min_byte_range(&self) -> Range<usize> {
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0..self.map_data_byte_range().end
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}
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}
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impl<'a> FontRead<'a> for DeltaSetIndexMapFormat1<'a> {
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fn read(data: FontData<'a>) -> Result<Self, ReadError> {
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let mut cursor = data.cursor();
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cursor.advance::<u8>();
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let entry_format: EntryFormat = cursor.read()?;
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let map_count: u32 = cursor.read()?;
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let map_data_byte_len = (EntryFormat::map_size(entry_format, map_count))
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.checked_mul(u8::RAW_BYTE_LEN)
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.ok_or(ReadError::OutOfBounds)?;
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cursor.advance_by(map_data_byte_len);
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cursor.finish(DeltaSetIndexMapFormat1Marker { map_data_byte_len })
|
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}
|
||
}
|
||
|
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/// The [DeltaSetIndexMap](https://learn.microsoft.com/en-us/typography/opentype/spec/otvarcommonformats#associating-target-items-to-variation-data) table format 1
|
||
pub type DeltaSetIndexMapFormat1<'a> = TableRef<'a, DeltaSetIndexMapFormat1Marker>;
|
||
|
||
#[allow(clippy::needless_lifetimes)]
|
||
impl<'a> DeltaSetIndexMapFormat1<'a> {
|
||
/// DeltaSetIndexMap format: set to 1.
|
||
pub fn format(&self) -> u8 {
|
||
let range = self.shape.format_byte_range();
|
||
self.data.read_at(range.start).unwrap()
|
||
}
|
||
|
||
/// A packed field that describes the compressed representation of
|
||
/// delta-set indices. See details below.
|
||
pub fn entry_format(&self) -> EntryFormat {
|
||
let range = self.shape.entry_format_byte_range();
|
||
self.data.read_at(range.start).unwrap()
|
||
}
|
||
|
||
/// The number of mapping entries.
|
||
pub fn map_count(&self) -> u32 {
|
||
let range = self.shape.map_count_byte_range();
|
||
self.data.read_at(range.start).unwrap()
|
||
}
|
||
|
||
/// The delta-set index mapping data. See details below.
|
||
pub fn map_data(&self) -> &'a [u8] {
|
||
let range = self.shape.map_data_byte_range();
|
||
self.data.read_array(range).unwrap()
|
||
}
|
||
}
|
||
|
||
#[cfg(feature = "experimental_traverse")]
|
||
impl<'a> SomeTable<'a> for DeltaSetIndexMapFormat1<'a> {
|
||
fn type_name(&self) -> &str {
|
||
"DeltaSetIndexMapFormat1"
|
||
}
|
||
fn get_field(&self, idx: usize) -> Option<Field<'a>> {
|
||
match idx {
|
||
0usize => Some(Field::new("format", self.format())),
|
||
1usize => Some(Field::new("entry_format", self.entry_format())),
|
||
2usize => Some(Field::new("map_count", self.map_count())),
|
||
3usize => Some(Field::new("map_data", self.map_data())),
|
||
_ => None,
|
||
}
|
||
}
|
||
}
|
||
|
||
#[cfg(feature = "experimental_traverse")]
|
||
#[allow(clippy::needless_lifetimes)]
|
||
impl<'a> std::fmt::Debug for DeltaSetIndexMapFormat1<'a> {
|
||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
||
(self as &dyn SomeTable<'a>).fmt(f)
|
||
}
|
||
}
|
||
|
||
/// The [DeltaSetIndexMap](https://learn.microsoft.com/en-us/typography/opentype/spec/otvarcommonformats#associating-target-items-to-variation-data) table
|
||
#[derive(Clone)]
|
||
pub enum DeltaSetIndexMap<'a> {
|
||
Format0(DeltaSetIndexMapFormat0<'a>),
|
||
Format1(DeltaSetIndexMapFormat1<'a>),
|
||
}
|
||
|
||
impl<'a> DeltaSetIndexMap<'a> {
|
||
///Return the `FontData` used to resolve offsets for this table.
|
||
pub fn offset_data(&self) -> FontData<'a> {
|
||
match self {
|
||
Self::Format0(item) => item.offset_data(),
|
||
Self::Format1(item) => item.offset_data(),
|
||
}
|
||
}
|
||
|
||
/// DeltaSetIndexMap format: set to 0.
|
||
pub fn format(&self) -> u8 {
|
||
match self {
|
||
Self::Format0(item) => item.format(),
|
||
Self::Format1(item) => item.format(),
|
||
}
|
||
}
|
||
|
||
/// A packed field that describes the compressed representation of
|
||
/// delta-set indices. See details below.
|
||
pub fn entry_format(&self) -> EntryFormat {
|
||
match self {
|
||
Self::Format0(item) => item.entry_format(),
|
||
Self::Format1(item) => item.entry_format(),
|
||
}
|
||
}
|
||
|
||
/// The delta-set index mapping data. See details below.
|
||
pub fn map_data(&self) -> &'a [u8] {
|
||
match self {
|
||
Self::Format0(item) => item.map_data(),
|
||
Self::Format1(item) => item.map_data(),
|
||
}
|
||
}
|
||
}
|
||
|
||
impl<'a> FontRead<'a> for DeltaSetIndexMap<'a> {
|
||
fn read(data: FontData<'a>) -> Result<Self, ReadError> {
|
||
let format: u8 = data.read_at(0usize)?;
|
||
match format {
|
||
DeltaSetIndexMapFormat0Marker::FORMAT => Ok(Self::Format0(FontRead::read(data)?)),
|
||
DeltaSetIndexMapFormat1Marker::FORMAT => Ok(Self::Format1(FontRead::read(data)?)),
|
||
other => Err(ReadError::InvalidFormat(other.into())),
|
||
}
|
||
}
|
||
}
|
||
|
||
impl MinByteRange for DeltaSetIndexMap<'_> {
|
||
fn min_byte_range(&self) -> Range<usize> {
|
||
match self {
|
||
Self::Format0(item) => item.min_byte_range(),
|
||
Self::Format1(item) => item.min_byte_range(),
|
||
}
|
||
}
|
||
}
|
||
|
||
#[cfg(feature = "experimental_traverse")]
|
||
impl<'a> DeltaSetIndexMap<'a> {
|
||
fn dyn_inner<'b>(&'b self) -> &'b dyn SomeTable<'a> {
|
||
match self {
|
||
Self::Format0(table) => table,
|
||
Self::Format1(table) => table,
|
||
}
|
||
}
|
||
}
|
||
|
||
#[cfg(feature = "experimental_traverse")]
|
||
impl std::fmt::Debug for DeltaSetIndexMap<'_> {
|
||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
||
self.dyn_inner().fmt(f)
|
||
}
|
||
}
|
||
|
||
#[cfg(feature = "experimental_traverse")]
|
||
impl<'a> SomeTable<'a> for DeltaSetIndexMap<'a> {
|
||
fn type_name(&self) -> &str {
|
||
self.dyn_inner().type_name()
|
||
}
|
||
fn get_field(&self, idx: usize) -> Option<Field<'a>> {
|
||
self.dyn_inner().get_field(idx)
|
||
}
|
||
}
|
||
|
||
/// Entry format for a [DeltaSetIndexMap].
|
||
#[derive(Clone, Copy, Default, PartialEq, Eq, PartialOrd, Ord, Hash, bytemuck :: AnyBitPattern)]
|
||
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
|
||
#[repr(transparent)]
|
||
pub struct EntryFormat {
|
||
bits: u8,
|
||
}
|
||
|
||
impl EntryFormat {
|
||
/// Mask for the low 4 bits, which give the count of bits minus one that are used in each entry for the inner-level index.
|
||
pub const INNER_INDEX_BIT_COUNT_MASK: Self = Self { bits: 0x0F };
|
||
|
||
/// Mask for bits that indicate the size in bytes minus one of each entry.
|
||
pub const MAP_ENTRY_SIZE_MASK: Self = Self { bits: 0x30 };
|
||
}
|
||
|
||
impl EntryFormat {
|
||
/// Returns an empty set of flags.
|
||
#[inline]
|
||
pub const fn empty() -> Self {
|
||
Self { bits: 0 }
|
||
}
|
||
|
||
/// Returns the set containing all flags.
|
||
#[inline]
|
||
pub const fn all() -> Self {
|
||
Self {
|
||
bits: Self::INNER_INDEX_BIT_COUNT_MASK.bits | Self::MAP_ENTRY_SIZE_MASK.bits,
|
||
}
|
||
}
|
||
|
||
/// Returns the raw value of the flags currently stored.
|
||
#[inline]
|
||
pub const fn bits(&self) -> u8 {
|
||
self.bits
|
||
}
|
||
|
||
/// Convert from underlying bit representation, unless that
|
||
/// representation contains bits that do not correspond to a flag.
|
||
#[inline]
|
||
pub const fn from_bits(bits: u8) -> Option<Self> {
|
||
if (bits & !Self::all().bits()) == 0 {
|
||
Some(Self { bits })
|
||
} else {
|
||
None
|
||
}
|
||
}
|
||
|
||
/// Convert from underlying bit representation, dropping any bits
|
||
/// that do not correspond to flags.
|
||
#[inline]
|
||
pub const fn from_bits_truncate(bits: u8) -> Self {
|
||
Self {
|
||
bits: bits & Self::all().bits,
|
||
}
|
||
}
|
||
|
||
/// Returns `true` if no flags are currently stored.
|
||
#[inline]
|
||
pub const fn is_empty(&self) -> bool {
|
||
self.bits() == Self::empty().bits()
|
||
}
|
||
|
||
/// Returns `true` if there are flags common to both `self` and `other`.
|
||
#[inline]
|
||
pub const fn intersects(&self, other: Self) -> bool {
|
||
!(Self {
|
||
bits: self.bits & other.bits,
|
||
})
|
||
.is_empty()
|
||
}
|
||
|
||
/// Returns `true` if all of the flags in `other` are contained within `self`.
|
||
#[inline]
|
||
pub const fn contains(&self, other: Self) -> bool {
|
||
(self.bits & other.bits) == other.bits
|
||
}
|
||
|
||
/// Inserts the specified flags in-place.
|
||
#[inline]
|
||
pub fn insert(&mut self, other: Self) {
|
||
self.bits |= other.bits;
|
||
}
|
||
|
||
/// Removes the specified flags in-place.
|
||
#[inline]
|
||
pub fn remove(&mut self, other: Self) {
|
||
self.bits &= !other.bits;
|
||
}
|
||
|
||
/// Toggles the specified flags in-place.
|
||
#[inline]
|
||
pub fn toggle(&mut self, other: Self) {
|
||
self.bits ^= other.bits;
|
||
}
|
||
|
||
/// Returns the intersection between the flags in `self` and
|
||
/// `other`.
|
||
///
|
||
/// Specifically, the returned set contains only the flags which are
|
||
/// present in *both* `self` *and* `other`.
|
||
///
|
||
/// This is equivalent to using the `&` operator (e.g.
|
||
/// [`ops::BitAnd`]), as in `flags & other`.
|
||
///
|
||
/// [`ops::BitAnd`]: https://doc.rust-lang.org/std/ops/trait.BitAnd.html
|
||
#[inline]
|
||
#[must_use]
|
||
pub const fn intersection(self, other: Self) -> Self {
|
||
Self {
|
||
bits: self.bits & other.bits,
|
||
}
|
||
}
|
||
|
||
/// Returns the union of between the flags in `self` and `other`.
|
||
///
|
||
/// Specifically, the returned set contains all flags which are
|
||
/// present in *either* `self` *or* `other`, including any which are
|
||
/// present in both.
|
||
///
|
||
/// This is equivalent to using the `|` operator (e.g.
|
||
/// [`ops::BitOr`]), as in `flags | other`.
|
||
///
|
||
/// [`ops::BitOr`]: https://doc.rust-lang.org/std/ops/trait.BitOr.html
|
||
#[inline]
|
||
#[must_use]
|
||
pub const fn union(self, other: Self) -> Self {
|
||
Self {
|
||
bits: self.bits | other.bits,
|
||
}
|
||
}
|
||
|
||
/// Returns the difference between the flags in `self` and `other`.
|
||
///
|
||
/// Specifically, the returned set contains all flags present in
|
||
/// `self`, except for the ones present in `other`.
|
||
///
|
||
/// It is also conceptually equivalent to the "bit-clear" operation:
|
||
/// `flags & !other` (and this syntax is also supported).
|
||
///
|
||
/// This is equivalent to using the `-` operator (e.g.
|
||
/// [`ops::Sub`]), as in `flags - other`.
|
||
///
|
||
/// [`ops::Sub`]: https://doc.rust-lang.org/std/ops/trait.Sub.html
|
||
#[inline]
|
||
#[must_use]
|
||
pub const fn difference(self, other: Self) -> Self {
|
||
Self {
|
||
bits: self.bits & !other.bits,
|
||
}
|
||
}
|
||
}
|
||
|
||
impl std::ops::BitOr for EntryFormat {
|
||
type Output = Self;
|
||
|
||
/// Returns the union of the two sets of flags.
|
||
#[inline]
|
||
fn bitor(self, other: EntryFormat) -> Self {
|
||
Self {
|
||
bits: self.bits | other.bits,
|
||
}
|
||
}
|
||
}
|
||
|
||
impl std::ops::BitOrAssign for EntryFormat {
|
||
/// Adds the set of flags.
|
||
#[inline]
|
||
fn bitor_assign(&mut self, other: Self) {
|
||
self.bits |= other.bits;
|
||
}
|
||
}
|
||
|
||
impl std::ops::BitXor for EntryFormat {
|
||
type Output = Self;
|
||
|
||
/// Returns the left flags, but with all the right flags toggled.
|
||
#[inline]
|
||
fn bitxor(self, other: Self) -> Self {
|
||
Self {
|
||
bits: self.bits ^ other.bits,
|
||
}
|
||
}
|
||
}
|
||
|
||
impl std::ops::BitXorAssign for EntryFormat {
|
||
/// Toggles the set of flags.
|
||
#[inline]
|
||
fn bitxor_assign(&mut self, other: Self) {
|
||
self.bits ^= other.bits;
|
||
}
|
||
}
|
||
|
||
impl std::ops::BitAnd for EntryFormat {
|
||
type Output = Self;
|
||
|
||
/// Returns the intersection between the two sets of flags.
|
||
#[inline]
|
||
fn bitand(self, other: Self) -> Self {
|
||
Self {
|
||
bits: self.bits & other.bits,
|
||
}
|
||
}
|
||
}
|
||
|
||
impl std::ops::BitAndAssign for EntryFormat {
|
||
/// Disables all flags disabled in the set.
|
||
#[inline]
|
||
fn bitand_assign(&mut self, other: Self) {
|
||
self.bits &= other.bits;
|
||
}
|
||
}
|
||
|
||
impl std::ops::Sub for EntryFormat {
|
||
type Output = Self;
|
||
|
||
/// Returns the set difference of the two sets of flags.
|
||
#[inline]
|
||
fn sub(self, other: Self) -> Self {
|
||
Self {
|
||
bits: self.bits & !other.bits,
|
||
}
|
||
}
|
||
}
|
||
|
||
impl std::ops::SubAssign for EntryFormat {
|
||
/// Disables all flags enabled in the set.
|
||
#[inline]
|
||
fn sub_assign(&mut self, other: Self) {
|
||
self.bits &= !other.bits;
|
||
}
|
||
}
|
||
|
||
impl std::ops::Not for EntryFormat {
|
||
type Output = Self;
|
||
|
||
/// Returns the complement of this set of flags.
|
||
#[inline]
|
||
fn not(self) -> Self {
|
||
Self { bits: !self.bits } & Self::all()
|
||
}
|
||
}
|
||
|
||
impl std::fmt::Debug for EntryFormat {
|
||
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
|
||
let members: &[(&str, Self)] = &[
|
||
(
|
||
"INNER_INDEX_BIT_COUNT_MASK",
|
||
Self::INNER_INDEX_BIT_COUNT_MASK,
|
||
),
|
||
("MAP_ENTRY_SIZE_MASK", Self::MAP_ENTRY_SIZE_MASK),
|
||
];
|
||
let mut first = true;
|
||
for (name, value) in members {
|
||
if self.contains(*value) {
|
||
if !first {
|
||
f.write_str(" | ")?;
|
||
}
|
||
first = false;
|
||
f.write_str(name)?;
|
||
}
|
||
}
|
||
if first {
|
||
f.write_str("(empty)")?;
|
||
}
|
||
Ok(())
|
||
}
|
||
}
|
||
|
||
impl std::fmt::Binary for EntryFormat {
|
||
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
|
||
std::fmt::Binary::fmt(&self.bits, f)
|
||
}
|
||
}
|
||
|
||
impl std::fmt::Octal for EntryFormat {
|
||
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
|
||
std::fmt::Octal::fmt(&self.bits, f)
|
||
}
|
||
}
|
||
|
||
impl std::fmt::LowerHex for EntryFormat {
|
||
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
|
||
std::fmt::LowerHex::fmt(&self.bits, f)
|
||
}
|
||
}
|
||
|
||
impl std::fmt::UpperHex for EntryFormat {
|
||
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
|
||
std::fmt::UpperHex::fmt(&self.bits, f)
|
||
}
|
||
}
|
||
|
||
impl font_types::Scalar for EntryFormat {
|
||
type Raw = <u8 as font_types::Scalar>::Raw;
|
||
fn to_raw(self) -> Self::Raw {
|
||
self.bits().to_raw()
|
||
}
|
||
fn from_raw(raw: Self::Raw) -> Self {
|
||
let t = <u8>::from_raw(raw);
|
||
Self::from_bits_truncate(t)
|
||
}
|
||
}
|
||
|
||
#[cfg(feature = "experimental_traverse")]
|
||
impl<'a> From<EntryFormat> for FieldType<'a> {
|
||
fn from(src: EntryFormat) -> FieldType<'a> {
|
||
src.bits().into()
|
||
}
|
||
}
|
||
|
||
/// The [VariationRegionList](https://learn.microsoft.com/en-us/typography/opentype/spec/otvarcommonformats#variation-regions) table
|
||
#[derive(Debug, Clone, Copy)]
|
||
#[doc(hidden)]
|
||
pub struct VariationRegionListMarker {
|
||
variation_regions_byte_len: usize,
|
||
}
|
||
|
||
impl VariationRegionListMarker {
|
||
pub fn axis_count_byte_range(&self) -> Range<usize> {
|
||
let start = 0;
|
||
start..start + u16::RAW_BYTE_LEN
|
||
}
|
||
|
||
pub fn region_count_byte_range(&self) -> Range<usize> {
|
||
let start = self.axis_count_byte_range().end;
|
||
start..start + u16::RAW_BYTE_LEN
|
||
}
|
||
|
||
pub fn variation_regions_byte_range(&self) -> Range<usize> {
|
||
let start = self.region_count_byte_range().end;
|
||
start..start + self.variation_regions_byte_len
|
||
}
|
||
}
|
||
|
||
impl MinByteRange for VariationRegionListMarker {
|
||
fn min_byte_range(&self) -> Range<usize> {
|
||
0..self.variation_regions_byte_range().end
|
||
}
|
||
}
|
||
|
||
impl<'a> FontRead<'a> for VariationRegionList<'a> {
|
||
fn read(data: FontData<'a>) -> Result<Self, ReadError> {
|
||
let mut cursor = data.cursor();
|
||
let axis_count: u16 = cursor.read()?;
|
||
let region_count: u16 = cursor.read()?;
|
||
let variation_regions_byte_len = (region_count as usize)
|
||
.checked_mul(<VariationRegion as ComputeSize>::compute_size(&axis_count)?)
|
||
.ok_or(ReadError::OutOfBounds)?;
|
||
cursor.advance_by(variation_regions_byte_len);
|
||
cursor.finish(VariationRegionListMarker {
|
||
variation_regions_byte_len,
|
||
})
|
||
}
|
||
}
|
||
|
||
/// The [VariationRegionList](https://learn.microsoft.com/en-us/typography/opentype/spec/otvarcommonformats#variation-regions) table
|
||
pub type VariationRegionList<'a> = TableRef<'a, VariationRegionListMarker>;
|
||
|
||
#[allow(clippy::needless_lifetimes)]
|
||
impl<'a> VariationRegionList<'a> {
|
||
/// The number of variation axes for this font. This must be the
|
||
/// same number as axisCount in the 'fvar' table.
|
||
pub fn axis_count(&self) -> u16 {
|
||
let range = self.shape.axis_count_byte_range();
|
||
self.data.read_at(range.start).unwrap()
|
||
}
|
||
|
||
/// The number of variation region tables in the variation region
|
||
/// list. Must be less than 32,768.
|
||
pub fn region_count(&self) -> u16 {
|
||
let range = self.shape.region_count_byte_range();
|
||
self.data.read_at(range.start).unwrap()
|
||
}
|
||
|
||
/// Array of variation regions.
|
||
pub fn variation_regions(&self) -> ComputedArray<'a, VariationRegion<'a>> {
|
||
let range = self.shape.variation_regions_byte_range();
|
||
self.data.read_with_args(range, &self.axis_count()).unwrap()
|
||
}
|
||
}
|
||
|
||
#[cfg(feature = "experimental_traverse")]
|
||
impl<'a> SomeTable<'a> for VariationRegionList<'a> {
|
||
fn type_name(&self) -> &str {
|
||
"VariationRegionList"
|
||
}
|
||
fn get_field(&self, idx: usize) -> Option<Field<'a>> {
|
||
match idx {
|
||
0usize => Some(Field::new("axis_count", self.axis_count())),
|
||
1usize => Some(Field::new("region_count", self.region_count())),
|
||
2usize => Some(Field::new(
|
||
"variation_regions",
|
||
traversal::FieldType::computed_array(
|
||
"VariationRegion",
|
||
self.variation_regions(),
|
||
self.offset_data(),
|
||
),
|
||
)),
|
||
_ => None,
|
||
}
|
||
}
|
||
}
|
||
|
||
#[cfg(feature = "experimental_traverse")]
|
||
#[allow(clippy::needless_lifetimes)]
|
||
impl<'a> std::fmt::Debug for VariationRegionList<'a> {
|
||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
||
(self as &dyn SomeTable<'a>).fmt(f)
|
||
}
|
||
}
|
||
|
||
/// The [VariationRegion](https://learn.microsoft.com/en-us/typography/opentype/spec/otvarcommonformats#variation-regions) record
|
||
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
|
||
pub struct VariationRegion<'a> {
|
||
/// Array of region axis coordinates records, in the order of axes
|
||
/// given in the 'fvar' table.
|
||
pub region_axes: &'a [RegionAxisCoordinates],
|
||
}
|
||
|
||
impl<'a> VariationRegion<'a> {
|
||
/// Array of region axis coordinates records, in the order of axes
|
||
/// given in the 'fvar' table.
|
||
pub fn region_axes(&self) -> &'a [RegionAxisCoordinates] {
|
||
self.region_axes
|
||
}
|
||
}
|
||
|
||
impl ReadArgs for VariationRegion<'_> {
|
||
type Args = u16;
|
||
}
|
||
|
||
impl ComputeSize for VariationRegion<'_> {
|
||
#[allow(clippy::needless_question_mark)]
|
||
fn compute_size(args: &u16) -> Result<usize, ReadError> {
|
||
let axis_count = *args;
|
||
Ok((axis_count as usize)
|
||
.checked_mul(RegionAxisCoordinates::RAW_BYTE_LEN)
|
||
.ok_or(ReadError::OutOfBounds)?)
|
||
}
|
||
}
|
||
|
||
impl<'a> FontReadWithArgs<'a> for VariationRegion<'a> {
|
||
fn read_with_args(data: FontData<'a>, args: &u16) -> Result<Self, ReadError> {
|
||
let mut cursor = data.cursor();
|
||
let axis_count = *args;
|
||
Ok(Self {
|
||
region_axes: cursor.read_array(axis_count as usize)?,
|
||
})
|
||
}
|
||
}
|
||
|
||
#[allow(clippy::needless_lifetimes)]
|
||
impl<'a> VariationRegion<'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) -> Result<Self, ReadError> {
|
||
let args = axis_count;
|
||
Self::read_with_args(data, &args)
|
||
}
|
||
}
|
||
|
||
#[cfg(feature = "experimental_traverse")]
|
||
impl<'a> SomeRecord<'a> for VariationRegion<'a> {
|
||
fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
|
||
RecordResolver {
|
||
name: "VariationRegion",
|
||
get_field: Box::new(move |idx, _data| match idx {
|
||
0usize => Some(Field::new(
|
||
"region_axes",
|
||
traversal::FieldType::array_of_records(
|
||
stringify!(RegionAxisCoordinates),
|
||
self.region_axes(),
|
||
_data,
|
||
),
|
||
)),
|
||
_ => None,
|
||
}),
|
||
data,
|
||
}
|
||
}
|
||
}
|
||
|
||
/// The [RegionAxisCoordinates](https://learn.microsoft.com/en-us/typography/opentype/spec/otvarcommonformats#variation-regions) record
|
||
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
|
||
#[repr(C)]
|
||
#[repr(packed)]
|
||
pub struct RegionAxisCoordinates {
|
||
/// The region start coordinate value for the current axis.
|
||
pub start_coord: BigEndian<F2Dot14>,
|
||
/// The region peak coordinate value for the current axis.
|
||
pub peak_coord: BigEndian<F2Dot14>,
|
||
/// The region end coordinate value for the current axis.
|
||
pub end_coord: BigEndian<F2Dot14>,
|
||
}
|
||
|
||
impl RegionAxisCoordinates {
|
||
/// The region start coordinate value for the current axis.
|
||
pub fn start_coord(&self) -> F2Dot14 {
|
||
self.start_coord.get()
|
||
}
|
||
|
||
/// The region peak coordinate value for the current axis.
|
||
pub fn peak_coord(&self) -> F2Dot14 {
|
||
self.peak_coord.get()
|
||
}
|
||
|
||
/// The region end coordinate value for the current axis.
|
||
pub fn end_coord(&self) -> F2Dot14 {
|
||
self.end_coord.get()
|
||
}
|
||
}
|
||
|
||
impl FixedSize for RegionAxisCoordinates {
|
||
const RAW_BYTE_LEN: usize =
|
||
F2Dot14::RAW_BYTE_LEN + F2Dot14::RAW_BYTE_LEN + F2Dot14::RAW_BYTE_LEN;
|
||
}
|
||
|
||
#[cfg(feature = "experimental_traverse")]
|
||
impl<'a> SomeRecord<'a> for RegionAxisCoordinates {
|
||
fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
|
||
RecordResolver {
|
||
name: "RegionAxisCoordinates",
|
||
get_field: Box::new(move |idx, _data| match idx {
|
||
0usize => Some(Field::new("start_coord", self.start_coord())),
|
||
1usize => Some(Field::new("peak_coord", self.peak_coord())),
|
||
2usize => Some(Field::new("end_coord", self.end_coord())),
|
||
_ => None,
|
||
}),
|
||
data,
|
||
}
|
||
}
|
||
}
|
||
|
||
/// The [ItemVariationStore](https://learn.microsoft.com/en-us/typography/opentype/spec/otvarcommonformats#item-variation-store-header-and-item-variation-data-subtables) table
|
||
#[derive(Debug, Clone, Copy)]
|
||
#[doc(hidden)]
|
||
pub struct ItemVariationStoreMarker {
|
||
item_variation_data_offsets_byte_len: usize,
|
||
}
|
||
|
||
impl ItemVariationStoreMarker {
|
||
pub fn format_byte_range(&self) -> Range<usize> {
|
||
let start = 0;
|
||
start..start + u16::RAW_BYTE_LEN
|
||
}
|
||
|
||
pub fn variation_region_list_offset_byte_range(&self) -> Range<usize> {
|
||
let start = self.format_byte_range().end;
|
||
start..start + Offset32::RAW_BYTE_LEN
|
||
}
|
||
|
||
pub fn item_variation_data_count_byte_range(&self) -> Range<usize> {
|
||
let start = self.variation_region_list_offset_byte_range().end;
|
||
start..start + u16::RAW_BYTE_LEN
|
||
}
|
||
|
||
pub fn item_variation_data_offsets_byte_range(&self) -> Range<usize> {
|
||
let start = self.item_variation_data_count_byte_range().end;
|
||
start..start + self.item_variation_data_offsets_byte_len
|
||
}
|
||
}
|
||
|
||
impl MinByteRange for ItemVariationStoreMarker {
|
||
fn min_byte_range(&self) -> Range<usize> {
|
||
0..self.item_variation_data_offsets_byte_range().end
|
||
}
|
||
}
|
||
|
||
impl<'a> FontRead<'a> for ItemVariationStore<'a> {
|
||
fn read(data: FontData<'a>) -> Result<Self, ReadError> {
|
||
let mut cursor = data.cursor();
|
||
cursor.advance::<u16>();
|
||
cursor.advance::<Offset32>();
|
||
let item_variation_data_count: u16 = cursor.read()?;
|
||
let item_variation_data_offsets_byte_len = (item_variation_data_count as usize)
|
||
.checked_mul(Offset32::RAW_BYTE_LEN)
|
||
.ok_or(ReadError::OutOfBounds)?;
|
||
cursor.advance_by(item_variation_data_offsets_byte_len);
|
||
cursor.finish(ItemVariationStoreMarker {
|
||
item_variation_data_offsets_byte_len,
|
||
})
|
||
}
|
||
}
|
||
|
||
/// The [ItemVariationStore](https://learn.microsoft.com/en-us/typography/opentype/spec/otvarcommonformats#item-variation-store-header-and-item-variation-data-subtables) table
|
||
pub type ItemVariationStore<'a> = TableRef<'a, ItemVariationStoreMarker>;
|
||
|
||
#[allow(clippy::needless_lifetimes)]
|
||
impl<'a> ItemVariationStore<'a> {
|
||
/// Format— set to 1
|
||
pub fn format(&self) -> u16 {
|
||
let range = self.shape.format_byte_range();
|
||
self.data.read_at(range.start).unwrap()
|
||
}
|
||
|
||
/// Offset in bytes from the start of the item variation store to
|
||
/// the variation region list.
|
||
pub fn variation_region_list_offset(&self) -> Offset32 {
|
||
let range = self.shape.variation_region_list_offset_byte_range();
|
||
self.data.read_at(range.start).unwrap()
|
||
}
|
||
|
||
/// Attempt to resolve [`variation_region_list_offset`][Self::variation_region_list_offset].
|
||
pub fn variation_region_list(&self) -> Result<VariationRegionList<'a>, ReadError> {
|
||
let data = self.data;
|
||
self.variation_region_list_offset().resolve(data)
|
||
}
|
||
|
||
/// The number of item variation data subtables.
|
||
pub fn item_variation_data_count(&self) -> u16 {
|
||
let range = self.shape.item_variation_data_count_byte_range();
|
||
self.data.read_at(range.start).unwrap()
|
||
}
|
||
|
||
/// Offsets in bytes from the start of the item variation store to
|
||
/// each item variation data subtable.
|
||
pub fn item_variation_data_offsets(&self) -> &'a [BigEndian<Nullable<Offset32>>] {
|
||
let range = self.shape.item_variation_data_offsets_byte_range();
|
||
self.data.read_array(range).unwrap()
|
||
}
|
||
|
||
/// A dynamically resolving wrapper for [`item_variation_data_offsets`][Self::item_variation_data_offsets].
|
||
pub fn item_variation_data(
|
||
&self,
|
||
) -> ArrayOfNullableOffsets<'a, ItemVariationData<'a>, Offset32> {
|
||
let data = self.data;
|
||
let offsets = self.item_variation_data_offsets();
|
||
ArrayOfNullableOffsets::new(offsets, data, ())
|
||
}
|
||
}
|
||
|
||
#[cfg(feature = "experimental_traverse")]
|
||
impl<'a> SomeTable<'a> for ItemVariationStore<'a> {
|
||
fn type_name(&self) -> &str {
|
||
"ItemVariationStore"
|
||
}
|
||
fn get_field(&self, idx: usize) -> Option<Field<'a>> {
|
||
match idx {
|
||
0usize => Some(Field::new("format", self.format())),
|
||
1usize => Some(Field::new(
|
||
"variation_region_list_offset",
|
||
FieldType::offset(
|
||
self.variation_region_list_offset(),
|
||
self.variation_region_list(),
|
||
),
|
||
)),
|
||
2usize => Some(Field::new(
|
||
"item_variation_data_count",
|
||
self.item_variation_data_count(),
|
||
)),
|
||
3usize => Some({
|
||
let data = self.data;
|
||
Field::new(
|
||
"item_variation_data_offsets",
|
||
FieldType::array_of_offsets(
|
||
better_type_name::<ItemVariationData>(),
|
||
self.item_variation_data_offsets(),
|
||
move |off| {
|
||
let target = off.get().resolve::<ItemVariationData>(data);
|
||
FieldType::offset(off.get(), target)
|
||
},
|
||
),
|
||
)
|
||
}),
|
||
_ => None,
|
||
}
|
||
}
|
||
}
|
||
|
||
#[cfg(feature = "experimental_traverse")]
|
||
#[allow(clippy::needless_lifetimes)]
|
||
impl<'a> std::fmt::Debug for ItemVariationStore<'a> {
|
||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
||
(self as &dyn SomeTable<'a>).fmt(f)
|
||
}
|
||
}
|
||
|
||
/// The [ItemVariationData](https://learn.microsoft.com/en-us/typography/opentype/spec/otvarcommonformats#item-variation-store-header-and-item-variation-data-subtables) subtable
|
||
#[derive(Debug, Clone, Copy)]
|
||
#[doc(hidden)]
|
||
pub struct ItemVariationDataMarker {
|
||
region_indexes_byte_len: usize,
|
||
delta_sets_byte_len: usize,
|
||
}
|
||
|
||
impl ItemVariationDataMarker {
|
||
pub fn item_count_byte_range(&self) -> Range<usize> {
|
||
let start = 0;
|
||
start..start + u16::RAW_BYTE_LEN
|
||
}
|
||
|
||
pub fn word_delta_count_byte_range(&self) -> Range<usize> {
|
||
let start = self.item_count_byte_range().end;
|
||
start..start + u16::RAW_BYTE_LEN
|
||
}
|
||
|
||
pub fn region_index_count_byte_range(&self) -> Range<usize> {
|
||
let start = self.word_delta_count_byte_range().end;
|
||
start..start + u16::RAW_BYTE_LEN
|
||
}
|
||
|
||
pub fn region_indexes_byte_range(&self) -> Range<usize> {
|
||
let start = self.region_index_count_byte_range().end;
|
||
start..start + self.region_indexes_byte_len
|
||
}
|
||
|
||
pub fn delta_sets_byte_range(&self) -> Range<usize> {
|
||
let start = self.region_indexes_byte_range().end;
|
||
start..start + self.delta_sets_byte_len
|
||
}
|
||
}
|
||
|
||
impl MinByteRange for ItemVariationDataMarker {
|
||
fn min_byte_range(&self) -> Range<usize> {
|
||
0..self.delta_sets_byte_range().end
|
||
}
|
||
}
|
||
|
||
impl<'a> FontRead<'a> for ItemVariationData<'a> {
|
||
fn read(data: FontData<'a>) -> Result<Self, ReadError> {
|
||
let mut cursor = data.cursor();
|
||
let item_count: u16 = cursor.read()?;
|
||
let word_delta_count: u16 = cursor.read()?;
|
||
let region_index_count: u16 = cursor.read()?;
|
||
let region_indexes_byte_len = (region_index_count as usize)
|
||
.checked_mul(u16::RAW_BYTE_LEN)
|
||
.ok_or(ReadError::OutOfBounds)?;
|
||
cursor.advance_by(region_indexes_byte_len);
|
||
let delta_sets_byte_len =
|
||
(ItemVariationData::delta_sets_len(item_count, word_delta_count, region_index_count))
|
||
.checked_mul(u8::RAW_BYTE_LEN)
|
||
.ok_or(ReadError::OutOfBounds)?;
|
||
cursor.advance_by(delta_sets_byte_len);
|
||
cursor.finish(ItemVariationDataMarker {
|
||
region_indexes_byte_len,
|
||
delta_sets_byte_len,
|
||
})
|
||
}
|
||
}
|
||
|
||
/// The [ItemVariationData](https://learn.microsoft.com/en-us/typography/opentype/spec/otvarcommonformats#item-variation-store-header-and-item-variation-data-subtables) subtable
|
||
pub type ItemVariationData<'a> = TableRef<'a, ItemVariationDataMarker>;
|
||
|
||
#[allow(clippy::needless_lifetimes)]
|
||
impl<'a> ItemVariationData<'a> {
|
||
/// The number of delta sets for distinct items.
|
||
pub fn item_count(&self) -> u16 {
|
||
let range = self.shape.item_count_byte_range();
|
||
self.data.read_at(range.start).unwrap()
|
||
}
|
||
|
||
/// A packed field: the high bit is a flag—see details below.
|
||
pub fn word_delta_count(&self) -> u16 {
|
||
let range = self.shape.word_delta_count_byte_range();
|
||
self.data.read_at(range.start).unwrap()
|
||
}
|
||
|
||
/// The number of variation regions referenced.
|
||
pub fn region_index_count(&self) -> u16 {
|
||
let range = self.shape.region_index_count_byte_range();
|
||
self.data.read_at(range.start).unwrap()
|
||
}
|
||
|
||
/// Array of indices into the variation region list for the regions
|
||
/// referenced by this item variation data table.
|
||
pub fn region_indexes(&self) -> &'a [BigEndian<u16>] {
|
||
let range = self.shape.region_indexes_byte_range();
|
||
self.data.read_array(range).unwrap()
|
||
}
|
||
|
||
/// Delta-set rows.
|
||
pub fn delta_sets(&self) -> &'a [u8] {
|
||
let range = self.shape.delta_sets_byte_range();
|
||
self.data.read_array(range).unwrap()
|
||
}
|
||
}
|
||
|
||
#[cfg(feature = "experimental_traverse")]
|
||
impl<'a> SomeTable<'a> for ItemVariationData<'a> {
|
||
fn type_name(&self) -> &str {
|
||
"ItemVariationData"
|
||
}
|
||
fn get_field(&self, idx: usize) -> Option<Field<'a>> {
|
||
match idx {
|
||
0usize => Some(Field::new("item_count", self.item_count())),
|
||
1usize => Some(Field::new("word_delta_count", self.word_delta_count())),
|
||
2usize => Some(Field::new("region_index_count", self.region_index_count())),
|
||
3usize => Some(Field::new("region_indexes", self.region_indexes())),
|
||
4usize => Some(Field::new("delta_sets", self.delta_sets())),
|
||
_ => None,
|
||
}
|
||
}
|
||
}
|
||
|
||
#[cfg(feature = "experimental_traverse")]
|
||
#[allow(clippy::needless_lifetimes)]
|
||
impl<'a> std::fmt::Debug for ItemVariationData<'a> {
|
||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
||
(self as &dyn SomeTable<'a>).fmt(f)
|
||
}
|
||
}
|