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another-boids-in-rust/vendor/read-fonts/generated/generated_bitmap.rs

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// 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::*;
/// [BitmapSize](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#bitmapsize-record) record.
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct BitmapSize {
/// Offset to IndexSubtableList, from beginning of EBLC/CBLC.
pub index_subtable_list_offset: BigEndian<u32>,
/// Total size in bytes of the IndexSubtableList including its array of IndexSubtables.
pub index_subtable_list_size: BigEndian<u32>,
/// Number of IndexSubtables in the IndexSubtableList.
pub number_of_index_subtables: BigEndian<u32>,
/// Not used; set to 0.
pub color_ref: BigEndian<u32>,
/// Line metrics for text rendered horizontally.
pub hori: SbitLineMetrics,
/// Line metrics for text rendered vertically.
pub vert: SbitLineMetrics,
/// Lowest glyph index for this size.
pub start_glyph_index: BigEndian<GlyphId16>,
/// Highest glyph index for this size.
pub end_glyph_index: BigEndian<GlyphId16>,
/// Horizontal pixels per em.
pub ppem_x: u8,
/// Vertical pixels per em.
pub ppem_y: u8,
/// The Microsoft rasterizer v.1.7 or greater supports the following
/// bitDepth values, as described below: 1, 2, 4, and 8 (and 32 for CBLC).
pub bit_depth: u8,
/// Vertical or horizontal.
pub flags: BigEndian<BitmapFlags>,
}
impl BitmapSize {
/// Offset to IndexSubtableList, from beginning of EBLC/CBLC.
pub fn index_subtable_list_offset(&self) -> u32 {
self.index_subtable_list_offset.get()
}
/// Total size in bytes of the IndexSubtableList including its array of IndexSubtables.
pub fn index_subtable_list_size(&self) -> u32 {
self.index_subtable_list_size.get()
}
/// Number of IndexSubtables in the IndexSubtableList.
pub fn number_of_index_subtables(&self) -> u32 {
self.number_of_index_subtables.get()
}
/// Not used; set to 0.
pub fn color_ref(&self) -> u32 {
self.color_ref.get()
}
/// Line metrics for text rendered horizontally.
pub fn hori(&self) -> &SbitLineMetrics {
&self.hori
}
/// Line metrics for text rendered vertically.
pub fn vert(&self) -> &SbitLineMetrics {
&self.vert
}
/// Lowest glyph index for this size.
pub fn start_glyph_index(&self) -> GlyphId16 {
self.start_glyph_index.get()
}
/// Highest glyph index for this size.
pub fn end_glyph_index(&self) -> GlyphId16 {
self.end_glyph_index.get()
}
/// Horizontal pixels per em.
pub fn ppem_x(&self) -> u8 {
self.ppem_x
}
/// Vertical pixels per em.
pub fn ppem_y(&self) -> u8 {
self.ppem_y
}
/// The Microsoft rasterizer v.1.7 or greater supports the following
/// bitDepth values, as described below: 1, 2, 4, and 8 (and 32 for CBLC).
pub fn bit_depth(&self) -> u8 {
self.bit_depth
}
/// Vertical or horizontal.
pub fn flags(&self) -> BitmapFlags {
self.flags.get()
}
}
impl FixedSize for BitmapSize {
const RAW_BYTE_LEN: usize = u32::RAW_BYTE_LEN
+ u32::RAW_BYTE_LEN
+ u32::RAW_BYTE_LEN
+ u32::RAW_BYTE_LEN
+ SbitLineMetrics::RAW_BYTE_LEN
+ SbitLineMetrics::RAW_BYTE_LEN
+ GlyphId16::RAW_BYTE_LEN
+ GlyphId16::RAW_BYTE_LEN
+ u8::RAW_BYTE_LEN
+ u8::RAW_BYTE_LEN
+ u8::RAW_BYTE_LEN
+ BitmapFlags::RAW_BYTE_LEN;
}
#[cfg(feature = "experimental_traverse")]
impl<'a> SomeRecord<'a> for BitmapSize {
fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
RecordResolver {
name: "BitmapSize",
get_field: Box::new(move |idx, _data| match idx {
0usize => Some(Field::new(
"index_subtable_list_offset",
self.index_subtable_list_offset(),
)),
1usize => Some(Field::new(
"index_subtable_list_size",
self.index_subtable_list_size(),
)),
2usize => Some(Field::new(
"number_of_index_subtables",
self.number_of_index_subtables(),
)),
3usize => Some(Field::new("color_ref", self.color_ref())),
4usize => Some(Field::new("hori", self.hori().traversal_type(_data))),
5usize => Some(Field::new("vert", self.vert().traversal_type(_data))),
6usize => Some(Field::new("start_glyph_index", self.start_glyph_index())),
7usize => Some(Field::new("end_glyph_index", self.end_glyph_index())),
8usize => Some(Field::new("ppem_x", self.ppem_x())),
9usize => Some(Field::new("ppem_y", self.ppem_y())),
10usize => Some(Field::new("bit_depth", self.bit_depth())),
11usize => Some(Field::new("flags", self.flags())),
_ => None,
}),
data,
}
}
}
/// [SbitLineMetrics](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#sbitlinemetrics-record) record.
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct SbitLineMetrics {
pub ascender: BigEndian<i8>,
pub descender: BigEndian<i8>,
pub width_max: u8,
pub caret_slope_numerator: BigEndian<i8>,
pub caret_slope_denominator: u8,
pub caret_offset: BigEndian<i8>,
pub min_origin_sb: BigEndian<i8>,
pub min_advance_sb: BigEndian<i8>,
pub max_before_bl: BigEndian<i8>,
pub min_after_bl: BigEndian<i8>,
pub pad1: BigEndian<i8>,
pub pad2: BigEndian<i8>,
}
impl SbitLineMetrics {
pub fn ascender(&self) -> i8 {
self.ascender.get()
}
pub fn descender(&self) -> i8 {
self.descender.get()
}
pub fn width_max(&self) -> u8 {
self.width_max
}
pub fn caret_slope_numerator(&self) -> i8 {
self.caret_slope_numerator.get()
}
pub fn caret_slope_denominator(&self) -> u8 {
self.caret_slope_denominator
}
pub fn caret_offset(&self) -> i8 {
self.caret_offset.get()
}
pub fn min_origin_sb(&self) -> i8 {
self.min_origin_sb.get()
}
pub fn min_advance_sb(&self) -> i8 {
self.min_advance_sb.get()
}
pub fn max_before_bl(&self) -> i8 {
self.max_before_bl.get()
}
pub fn min_after_bl(&self) -> i8 {
self.min_after_bl.get()
}
pub fn pad1(&self) -> i8 {
self.pad1.get()
}
pub fn pad2(&self) -> i8 {
self.pad2.get()
}
}
impl FixedSize for SbitLineMetrics {
const RAW_BYTE_LEN: usize = i8::RAW_BYTE_LEN
+ i8::RAW_BYTE_LEN
+ u8::RAW_BYTE_LEN
+ i8::RAW_BYTE_LEN
+ u8::RAW_BYTE_LEN
+ i8::RAW_BYTE_LEN
+ i8::RAW_BYTE_LEN
+ i8::RAW_BYTE_LEN
+ i8::RAW_BYTE_LEN
+ i8::RAW_BYTE_LEN
+ i8::RAW_BYTE_LEN
+ i8::RAW_BYTE_LEN;
}
#[cfg(feature = "experimental_traverse")]
impl<'a> SomeRecord<'a> for SbitLineMetrics {
fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
RecordResolver {
name: "SbitLineMetrics",
get_field: Box::new(move |idx, _data| match idx {
0usize => Some(Field::new("ascender", self.ascender())),
1usize => Some(Field::new("descender", self.descender())),
2usize => Some(Field::new("width_max", self.width_max())),
3usize => Some(Field::new(
"caret_slope_numerator",
self.caret_slope_numerator(),
)),
4usize => Some(Field::new(
"caret_slope_denominator",
self.caret_slope_denominator(),
)),
5usize => Some(Field::new("caret_offset", self.caret_offset())),
6usize => Some(Field::new("min_origin_sb", self.min_origin_sb())),
7usize => Some(Field::new("min_advance_sb", self.min_advance_sb())),
8usize => Some(Field::new("max_before_bl", self.max_before_bl())),
9usize => Some(Field::new("min_after_bl", self.min_after_bl())),
10usize => Some(Field::new("pad1", self.pad1())),
11usize => Some(Field::new("pad2", self.pad2())),
_ => None,
}),
data,
}
}
}
/// [Bitmap flags](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#bitmap-flags).
#[derive(Clone, Copy, Default, PartialEq, Eq, PartialOrd, Ord, Hash, bytemuck :: AnyBitPattern)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[repr(transparent)]
pub struct BitmapFlags {
bits: u8,
}
impl BitmapFlags {
/// Horizontal
pub const HORIZONTAL_METRICS: Self = Self { bits: 0x01 };
/// Vertical
pub const VERTICAL_METRICS: Self = Self { bits: 0x02 };
}
impl BitmapFlags {
/// 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::HORIZONTAL_METRICS.bits | Self::VERTICAL_METRICS.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 BitmapFlags {
type Output = Self;
/// Returns the union of the two sets of flags.
#[inline]
fn bitor(self, other: BitmapFlags) -> Self {
Self {
bits: self.bits | other.bits,
}
}
}
impl std::ops::BitOrAssign for BitmapFlags {
/// Adds the set of flags.
#[inline]
fn bitor_assign(&mut self, other: Self) {
self.bits |= other.bits;
}
}
impl std::ops::BitXor for BitmapFlags {
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 BitmapFlags {
/// Toggles the set of flags.
#[inline]
fn bitxor_assign(&mut self, other: Self) {
self.bits ^= other.bits;
}
}
impl std::ops::BitAnd for BitmapFlags {
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 BitmapFlags {
/// Disables all flags disabled in the set.
#[inline]
fn bitand_assign(&mut self, other: Self) {
self.bits &= other.bits;
}
}
impl std::ops::Sub for BitmapFlags {
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 BitmapFlags {
/// Disables all flags enabled in the set.
#[inline]
fn sub_assign(&mut self, other: Self) {
self.bits &= !other.bits;
}
}
impl std::ops::Not for BitmapFlags {
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 BitmapFlags {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
let members: &[(&str, Self)] = &[
("HORIZONTAL_METRICS", Self::HORIZONTAL_METRICS),
("VERTICAL_METRICS", Self::VERTICAL_METRICS),
];
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 BitmapFlags {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
std::fmt::Binary::fmt(&self.bits, f)
}
}
impl std::fmt::Octal for BitmapFlags {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
std::fmt::Octal::fmt(&self.bits, f)
}
}
impl std::fmt::LowerHex for BitmapFlags {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
std::fmt::LowerHex::fmt(&self.bits, f)
}
}
impl std::fmt::UpperHex for BitmapFlags {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
std::fmt::UpperHex::fmt(&self.bits, f)
}
}
impl font_types::Scalar for BitmapFlags {
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<BitmapFlags> for FieldType<'a> {
fn from(src: BitmapFlags) -> FieldType<'a> {
src.bits().into()
}
}
/// [BigGlyphMetrics](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#bigglyphmetrics) record.
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct BigGlyphMetrics {
/// Number of rows of data.
pub height: u8,
/// Number of columns of data.
pub width: u8,
/// Distance in pixels from the horizontal origin to the left edge of the bitmap.
pub hori_bearing_x: BigEndian<i8>,
/// Distance in pixels from the horizontal origin to the top edge of the bitmap.
pub hori_bearing_y: BigEndian<i8>,
/// Horizontal advance width in pixels.
pub hori_advance: u8,
/// Distance in pixels from the vertical origin to the left edge of the bitmap.
pub vert_bearing_x: BigEndian<i8>,
/// Distance in pixels from the vertical origin to the top edge of the bitmap.
pub vert_bearing_y: BigEndian<i8>,
/// Vertical advance width in pixels.
pub vert_advance: u8,
}
impl BigGlyphMetrics {
/// Number of rows of data.
pub fn height(&self) -> u8 {
self.height
}
/// Number of columns of data.
pub fn width(&self) -> u8 {
self.width
}
/// Distance in pixels from the horizontal origin to the left edge of the bitmap.
pub fn hori_bearing_x(&self) -> i8 {
self.hori_bearing_x.get()
}
/// Distance in pixels from the horizontal origin to the top edge of the bitmap.
pub fn hori_bearing_y(&self) -> i8 {
self.hori_bearing_y.get()
}
/// Horizontal advance width in pixels.
pub fn hori_advance(&self) -> u8 {
self.hori_advance
}
/// Distance in pixels from the vertical origin to the left edge of the bitmap.
pub fn vert_bearing_x(&self) -> i8 {
self.vert_bearing_x.get()
}
/// Distance in pixels from the vertical origin to the top edge of the bitmap.
pub fn vert_bearing_y(&self) -> i8 {
self.vert_bearing_y.get()
}
/// Vertical advance width in pixels.
pub fn vert_advance(&self) -> u8 {
self.vert_advance
}
}
impl FixedSize for BigGlyphMetrics {
const RAW_BYTE_LEN: usize = u8::RAW_BYTE_LEN
+ u8::RAW_BYTE_LEN
+ i8::RAW_BYTE_LEN
+ i8::RAW_BYTE_LEN
+ u8::RAW_BYTE_LEN
+ i8::RAW_BYTE_LEN
+ i8::RAW_BYTE_LEN
+ u8::RAW_BYTE_LEN;
}
#[cfg(feature = "experimental_traverse")]
impl<'a> SomeRecord<'a> for BigGlyphMetrics {
fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
RecordResolver {
name: "BigGlyphMetrics",
get_field: Box::new(move |idx, _data| match idx {
0usize => Some(Field::new("height", self.height())),
1usize => Some(Field::new("width", self.width())),
2usize => Some(Field::new("hori_bearing_x", self.hori_bearing_x())),
3usize => Some(Field::new("hori_bearing_y", self.hori_bearing_y())),
4usize => Some(Field::new("hori_advance", self.hori_advance())),
5usize => Some(Field::new("vert_bearing_x", self.vert_bearing_x())),
6usize => Some(Field::new("vert_bearing_y", self.vert_bearing_y())),
7usize => Some(Field::new("vert_advance", self.vert_advance())),
_ => None,
}),
data,
}
}
}
/// [SmallGlyphMetrics](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#smallglyphmetrics) record.
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct SmallGlyphMetrics {
/// Number of rows of data.
pub height: u8,
/// Number of columns of data.
pub width: u8,
/// Distance in pixels from the horizontal origin to the left edge of the bitmap (for horizontal text); or distance in pixels from the vertical origin to the top edge of the bitmap (for vertical text).
pub bearing_x: BigEndian<i8>,
/// Distance in pixels from the horizontal origin to the top edge of the bitmap (for horizontal text); or distance in pixels from the vertical origin to the left edge of the bitmap (for vertical text).
pub bearing_y: BigEndian<i8>,
/// Horizontal or vertical advance width in pixels.
pub advance: u8,
}
impl SmallGlyphMetrics {
/// Number of rows of data.
pub fn height(&self) -> u8 {
self.height
}
/// Number of columns of data.
pub fn width(&self) -> u8 {
self.width
}
/// Distance in pixels from the horizontal origin to the left edge of the bitmap (for horizontal text); or distance in pixels from the vertical origin to the top edge of the bitmap (for vertical text).
pub fn bearing_x(&self) -> i8 {
self.bearing_x.get()
}
/// Distance in pixels from the horizontal origin to the top edge of the bitmap (for horizontal text); or distance in pixels from the vertical origin to the left edge of the bitmap (for vertical text).
pub fn bearing_y(&self) -> i8 {
self.bearing_y.get()
}
/// Horizontal or vertical advance width in pixels.
pub fn advance(&self) -> u8 {
self.advance
}
}
impl FixedSize for SmallGlyphMetrics {
const RAW_BYTE_LEN: usize = u8::RAW_BYTE_LEN
+ u8::RAW_BYTE_LEN
+ i8::RAW_BYTE_LEN
+ i8::RAW_BYTE_LEN
+ u8::RAW_BYTE_LEN;
}
#[cfg(feature = "experimental_traverse")]
impl<'a> SomeRecord<'a> for SmallGlyphMetrics {
fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
RecordResolver {
name: "SmallGlyphMetrics",
get_field: Box::new(move |idx, _data| match idx {
0usize => Some(Field::new("height", self.height())),
1usize => Some(Field::new("width", self.width())),
2usize => Some(Field::new("bearing_x", self.bearing_x())),
3usize => Some(Field::new("bearing_y", self.bearing_y())),
4usize => Some(Field::new("advance", self.advance())),
_ => None,
}),
data,
}
}
}
/// [IndexSubtableList](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#indexsubtablelist) table.
#[derive(Debug, Clone, Copy)]
#[doc(hidden)]
pub struct IndexSubtableListMarker {
index_subtable_records_byte_len: usize,
}
impl IndexSubtableListMarker {
pub fn index_subtable_records_byte_range(&self) -> Range<usize> {
let start = 0;
start..start + self.index_subtable_records_byte_len
}
}
impl MinByteRange for IndexSubtableListMarker {
fn min_byte_range(&self) -> Range<usize> {
0..self.index_subtable_records_byte_range().end
}
}
impl ReadArgs for IndexSubtableList<'_> {
type Args = u32;
}
impl<'a> FontReadWithArgs<'a> for IndexSubtableList<'a> {
fn read_with_args(data: FontData<'a>, args: &u32) -> Result<Self, ReadError> {
let number_of_index_subtables = *args;
let mut cursor = data.cursor();
let index_subtable_records_byte_len = (number_of_index_subtables as usize)
.checked_mul(IndexSubtableRecord::RAW_BYTE_LEN)
.ok_or(ReadError::OutOfBounds)?;
cursor.advance_by(index_subtable_records_byte_len);
cursor.finish(IndexSubtableListMarker {
index_subtable_records_byte_len,
})
}
}
impl<'a> IndexSubtableList<'a> {
/// A constructor that requires additional arguments.
///
/// This type requires some external state in order to be
/// parsed.
pub fn read(data: FontData<'a>, number_of_index_subtables: u32) -> Result<Self, ReadError> {
let args = number_of_index_subtables;
Self::read_with_args(data, &args)
}
}
/// [IndexSubtableList](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#indexsubtablelist) table.
pub type IndexSubtableList<'a> = TableRef<'a, IndexSubtableListMarker>;
#[allow(clippy::needless_lifetimes)]
impl<'a> IndexSubtableList<'a> {
/// Array of IndexSubtableRecords.
pub fn index_subtable_records(&self) -> &'a [IndexSubtableRecord] {
let range = self.shape.index_subtable_records_byte_range();
self.data.read_array(range).unwrap()
}
}
#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for IndexSubtableList<'a> {
fn type_name(&self) -> &str {
"IndexSubtableList"
}
fn get_field(&self, idx: usize) -> Option<Field<'a>> {
match idx {
0usize => Some(Field::new(
"index_subtable_records",
traversal::FieldType::array_of_records(
stringify!(IndexSubtableRecord),
self.index_subtable_records(),
self.offset_data(),
),
)),
_ => None,
}
}
}
#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for IndexSubtableList<'a> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
(self as &dyn SomeTable<'a>).fmt(f)
}
}
#[derive(Clone, Debug, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct IndexSubtableRecord {
/// First glyph ID of this range.
pub first_glyph_index: BigEndian<GlyphId16>,
/// Last glyph ID of this range (inclusive).
pub last_glyph_index: BigEndian<GlyphId16>,
/// Offset to an IndexSubtable from the start of the IndexSubtableList.
pub index_subtable_offset: BigEndian<Offset32>,
}
impl IndexSubtableRecord {
/// First glyph ID of this range.
pub fn first_glyph_index(&self) -> GlyphId16 {
self.first_glyph_index.get()
}
/// Last glyph ID of this range (inclusive).
pub fn last_glyph_index(&self) -> GlyphId16 {
self.last_glyph_index.get()
}
/// Offset to an IndexSubtable from the start of the IndexSubtableList.
pub fn index_subtable_offset(&self) -> Offset32 {
self.index_subtable_offset.get()
}
/// Offset to an IndexSubtable from the start of the IndexSubtableList.
///
/// The `data` argument should be retrieved from the parent table
/// By calling its `offset_data` method.
pub fn index_subtable<'a>(&self, data: FontData<'a>) -> Result<IndexSubtable<'a>, ReadError> {
let args = (self.last_glyph_index(), self.first_glyph_index());
self.index_subtable_offset().resolve_with_args(data, &args)
}
}
impl FixedSize for IndexSubtableRecord {
const RAW_BYTE_LEN: usize =
GlyphId16::RAW_BYTE_LEN + GlyphId16::RAW_BYTE_LEN + Offset32::RAW_BYTE_LEN;
}
#[cfg(feature = "experimental_traverse")]
impl<'a> SomeRecord<'a> for IndexSubtableRecord {
fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
RecordResolver {
name: "IndexSubtableRecord",
get_field: Box::new(move |idx, _data| match idx {
0usize => Some(Field::new("first_glyph_index", self.first_glyph_index())),
1usize => Some(Field::new("last_glyph_index", self.last_glyph_index())),
2usize => Some(Field::new(
"index_subtable_offset",
FieldType::offset(self.index_subtable_offset(), self.index_subtable(_data)),
)),
_ => None,
}),
data,
}
}
}
impl Format<u16> for IndexSubtable1Marker {
const FORMAT: u16 = 1;
}
/// [IndexSubTable1](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#indexsubtable1-variable-metrics-glyphs-with-4-byte-offsets): variable-metrics glyphs with 4-byte offsets.
#[derive(Debug, Clone, Copy)]
#[doc(hidden)]
pub struct IndexSubtable1Marker {
sbit_offsets_byte_len: usize,
}
impl IndexSubtable1Marker {
pub fn index_format_byte_range(&self) -> Range<usize> {
let start = 0;
start..start + u16::RAW_BYTE_LEN
}
pub fn image_format_byte_range(&self) -> Range<usize> {
let start = self.index_format_byte_range().end;
start..start + u16::RAW_BYTE_LEN
}
pub fn image_data_offset_byte_range(&self) -> Range<usize> {
let start = self.image_format_byte_range().end;
start..start + u32::RAW_BYTE_LEN
}
pub fn sbit_offsets_byte_range(&self) -> Range<usize> {
let start = self.image_data_offset_byte_range().end;
start..start + self.sbit_offsets_byte_len
}
}
impl MinByteRange for IndexSubtable1Marker {
fn min_byte_range(&self) -> Range<usize> {
0..self.sbit_offsets_byte_range().end
}
}
impl ReadArgs for IndexSubtable1<'_> {
type Args = (GlyphId16, GlyphId16);
}
impl<'a> FontReadWithArgs<'a> for IndexSubtable1<'a> {
fn read_with_args(
data: FontData<'a>,
args: &(GlyphId16, GlyphId16),
) -> Result<Self, ReadError> {
let (last_glyph_index, first_glyph_index) = *args;
let mut cursor = data.cursor();
cursor.advance::<u16>();
cursor.advance::<u16>();
cursor.advance::<u32>();
let sbit_offsets_byte_len =
(transforms::subtract_add_two(last_glyph_index, first_glyph_index))
.checked_mul(u32::RAW_BYTE_LEN)
.ok_or(ReadError::OutOfBounds)?;
cursor.advance_by(sbit_offsets_byte_len);
cursor.finish(IndexSubtable1Marker {
sbit_offsets_byte_len,
})
}
}
impl<'a> IndexSubtable1<'a> {
/// A constructor that requires additional arguments.
///
/// This type requires some external state in order to be
/// parsed.
pub fn read(
data: FontData<'a>,
last_glyph_index: GlyphId16,
first_glyph_index: GlyphId16,
) -> Result<Self, ReadError> {
let args = (last_glyph_index, first_glyph_index);
Self::read_with_args(data, &args)
}
}
/// [IndexSubTable1](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#indexsubtable1-variable-metrics-glyphs-with-4-byte-offsets): variable-metrics glyphs with 4-byte offsets.
pub type IndexSubtable1<'a> = TableRef<'a, IndexSubtable1Marker>;
#[allow(clippy::needless_lifetimes)]
impl<'a> IndexSubtable1<'a> {
/// Format of this IndexSubTable.
pub fn index_format(&self) -> u16 {
let range = self.shape.index_format_byte_range();
self.data.read_at(range.start).unwrap()
}
/// Format of EBDT image data.
pub fn image_format(&self) -> u16 {
let range = self.shape.image_format_byte_range();
self.data.read_at(range.start).unwrap()
}
/// Offset to image data in EBDT table.
pub fn image_data_offset(&self) -> u32 {
let range = self.shape.image_data_offset_byte_range();
self.data.read_at(range.start).unwrap()
}
pub fn sbit_offsets(&self) -> &'a [BigEndian<u32>] {
let range = self.shape.sbit_offsets_byte_range();
self.data.read_array(range).unwrap()
}
}
#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for IndexSubtable1<'a> {
fn type_name(&self) -> &str {
"IndexSubtable1"
}
fn get_field(&self, idx: usize) -> Option<Field<'a>> {
match idx {
0usize => Some(Field::new("index_format", self.index_format())),
1usize => Some(Field::new("image_format", self.image_format())),
2usize => Some(Field::new("image_data_offset", self.image_data_offset())),
3usize => Some(Field::new("sbit_offsets", self.sbit_offsets())),
_ => None,
}
}
}
#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for IndexSubtable1<'a> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
(self as &dyn SomeTable<'a>).fmt(f)
}
}
impl Format<u16> for IndexSubtable2Marker {
const FORMAT: u16 = 2;
}
/// [IndexSubTable2](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#indexsubtable2-all-glyphs-have-identical-metrics): all glyphs have identical metrics.
#[derive(Debug, Clone, Copy)]
#[doc(hidden)]
pub struct IndexSubtable2Marker {
big_metrics_byte_len: usize,
}
impl IndexSubtable2Marker {
pub fn index_format_byte_range(&self) -> Range<usize> {
let start = 0;
start..start + u16::RAW_BYTE_LEN
}
pub fn image_format_byte_range(&self) -> Range<usize> {
let start = self.index_format_byte_range().end;
start..start + u16::RAW_BYTE_LEN
}
pub fn image_data_offset_byte_range(&self) -> Range<usize> {
let start = self.image_format_byte_range().end;
start..start + u32::RAW_BYTE_LEN
}
pub fn image_size_byte_range(&self) -> Range<usize> {
let start = self.image_data_offset_byte_range().end;
start..start + u32::RAW_BYTE_LEN
}
pub fn big_metrics_byte_range(&self) -> Range<usize> {
let start = self.image_size_byte_range().end;
start..start + self.big_metrics_byte_len
}
}
impl MinByteRange for IndexSubtable2Marker {
fn min_byte_range(&self) -> Range<usize> {
0..self.big_metrics_byte_range().end
}
}
impl<'a> FontRead<'a> for IndexSubtable2<'a> {
fn read(data: FontData<'a>) -> Result<Self, ReadError> {
let mut cursor = data.cursor();
cursor.advance::<u16>();
cursor.advance::<u16>();
cursor.advance::<u32>();
cursor.advance::<u32>();
let big_metrics_byte_len = BigGlyphMetrics::RAW_BYTE_LEN;
cursor.advance_by(big_metrics_byte_len);
cursor.finish(IndexSubtable2Marker {
big_metrics_byte_len,
})
}
}
/// [IndexSubTable2](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#indexsubtable2-all-glyphs-have-identical-metrics): all glyphs have identical metrics.
pub type IndexSubtable2<'a> = TableRef<'a, IndexSubtable2Marker>;
#[allow(clippy::needless_lifetimes)]
impl<'a> IndexSubtable2<'a> {
/// Format of this IndexSubTable.
pub fn index_format(&self) -> u16 {
let range = self.shape.index_format_byte_range();
self.data.read_at(range.start).unwrap()
}
/// Format of EBDT image data.
pub fn image_format(&self) -> u16 {
let range = self.shape.image_format_byte_range();
self.data.read_at(range.start).unwrap()
}
/// Offset to image data in EBDT table.
pub fn image_data_offset(&self) -> u32 {
let range = self.shape.image_data_offset_byte_range();
self.data.read_at(range.start).unwrap()
}
/// All the glyphs are of the same size.
pub fn image_size(&self) -> u32 {
let range = self.shape.image_size_byte_range();
self.data.read_at(range.start).unwrap()
}
/// All glyphs have the same metrics; glyph data may be compressed, byte-aligned, or bit-aligned.
pub fn big_metrics(&self) -> &'a [BigGlyphMetrics] {
let range = self.shape.big_metrics_byte_range();
self.data.read_array(range).unwrap()
}
}
#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for IndexSubtable2<'a> {
fn type_name(&self) -> &str {
"IndexSubtable2"
}
fn get_field(&self, idx: usize) -> Option<Field<'a>> {
match idx {
0usize => Some(Field::new("index_format", self.index_format())),
1usize => Some(Field::new("image_format", self.image_format())),
2usize => Some(Field::new("image_data_offset", self.image_data_offset())),
3usize => Some(Field::new("image_size", self.image_size())),
4usize => Some(Field::new(
"big_metrics",
traversal::FieldType::array_of_records(
stringify!(BigGlyphMetrics),
self.big_metrics(),
self.offset_data(),
),
)),
_ => None,
}
}
}
#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for IndexSubtable2<'a> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
(self as &dyn SomeTable<'a>).fmt(f)
}
}
impl Format<u16> for IndexSubtable3Marker {
const FORMAT: u16 = 3;
}
/// [IndexSubTable3](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#indexsubtable3-variable-metrics-glyphs-with-2-byte-offsets): variable-metrics glyphs with 2-byte offsets.
#[derive(Debug, Clone, Copy)]
#[doc(hidden)]
pub struct IndexSubtable3Marker {
sbit_offsets_byte_len: usize,
}
impl IndexSubtable3Marker {
pub fn index_format_byte_range(&self) -> Range<usize> {
let start = 0;
start..start + u16::RAW_BYTE_LEN
}
pub fn image_format_byte_range(&self) -> Range<usize> {
let start = self.index_format_byte_range().end;
start..start + u16::RAW_BYTE_LEN
}
pub fn image_data_offset_byte_range(&self) -> Range<usize> {
let start = self.image_format_byte_range().end;
start..start + u32::RAW_BYTE_LEN
}
pub fn sbit_offsets_byte_range(&self) -> Range<usize> {
let start = self.image_data_offset_byte_range().end;
start..start + self.sbit_offsets_byte_len
}
}
impl MinByteRange for IndexSubtable3Marker {
fn min_byte_range(&self) -> Range<usize> {
0..self.sbit_offsets_byte_range().end
}
}
impl ReadArgs for IndexSubtable3<'_> {
type Args = (GlyphId16, GlyphId16);
}
impl<'a> FontReadWithArgs<'a> for IndexSubtable3<'a> {
fn read_with_args(
data: FontData<'a>,
args: &(GlyphId16, GlyphId16),
) -> Result<Self, ReadError> {
let (last_glyph_index, first_glyph_index) = *args;
let mut cursor = data.cursor();
cursor.advance::<u16>();
cursor.advance::<u16>();
cursor.advance::<u32>();
let sbit_offsets_byte_len =
(transforms::subtract_add_two(last_glyph_index, first_glyph_index))
.checked_mul(u16::RAW_BYTE_LEN)
.ok_or(ReadError::OutOfBounds)?;
cursor.advance_by(sbit_offsets_byte_len);
cursor.finish(IndexSubtable3Marker {
sbit_offsets_byte_len,
})
}
}
impl<'a> IndexSubtable3<'a> {
/// A constructor that requires additional arguments.
///
/// This type requires some external state in order to be
/// parsed.
pub fn read(
data: FontData<'a>,
last_glyph_index: GlyphId16,
first_glyph_index: GlyphId16,
) -> Result<Self, ReadError> {
let args = (last_glyph_index, first_glyph_index);
Self::read_with_args(data, &args)
}
}
/// [IndexSubTable3](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#indexsubtable3-variable-metrics-glyphs-with-2-byte-offsets): variable-metrics glyphs with 2-byte offsets.
pub type IndexSubtable3<'a> = TableRef<'a, IndexSubtable3Marker>;
#[allow(clippy::needless_lifetimes)]
impl<'a> IndexSubtable3<'a> {
/// Format of this IndexSubTable.
pub fn index_format(&self) -> u16 {
let range = self.shape.index_format_byte_range();
self.data.read_at(range.start).unwrap()
}
/// Format of EBDT image data.
pub fn image_format(&self) -> u16 {
let range = self.shape.image_format_byte_range();
self.data.read_at(range.start).unwrap()
}
/// Offset to image data in EBDT table.
pub fn image_data_offset(&self) -> u32 {
let range = self.shape.image_data_offset_byte_range();
self.data.read_at(range.start).unwrap()
}
pub fn sbit_offsets(&self) -> &'a [BigEndian<u16>] {
let range = self.shape.sbit_offsets_byte_range();
self.data.read_array(range).unwrap()
}
}
#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for IndexSubtable3<'a> {
fn type_name(&self) -> &str {
"IndexSubtable3"
}
fn get_field(&self, idx: usize) -> Option<Field<'a>> {
match idx {
0usize => Some(Field::new("index_format", self.index_format())),
1usize => Some(Field::new("image_format", self.image_format())),
2usize => Some(Field::new("image_data_offset", self.image_data_offset())),
3usize => Some(Field::new("sbit_offsets", self.sbit_offsets())),
_ => None,
}
}
}
#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for IndexSubtable3<'a> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
(self as &dyn SomeTable<'a>).fmt(f)
}
}
impl Format<u16> for IndexSubtable4Marker {
const FORMAT: u16 = 4;
}
/// [IndexSubTable4](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#indexsubtable3-variable-metrics-glyphs-with-2-byte-offsets): variable-metrics glyphs with sparse glyph codes.
#[derive(Debug, Clone, Copy)]
#[doc(hidden)]
pub struct IndexSubtable4Marker {
glyph_array_byte_len: usize,
}
impl IndexSubtable4Marker {
pub fn index_format_byte_range(&self) -> Range<usize> {
let start = 0;
start..start + u16::RAW_BYTE_LEN
}
pub fn image_format_byte_range(&self) -> Range<usize> {
let start = self.index_format_byte_range().end;
start..start + u16::RAW_BYTE_LEN
}
pub fn image_data_offset_byte_range(&self) -> Range<usize> {
let start = self.image_format_byte_range().end;
start..start + u32::RAW_BYTE_LEN
}
pub fn num_glyphs_byte_range(&self) -> Range<usize> {
let start = self.image_data_offset_byte_range().end;
start..start + u32::RAW_BYTE_LEN
}
pub fn glyph_array_byte_range(&self) -> Range<usize> {
let start = self.num_glyphs_byte_range().end;
start..start + self.glyph_array_byte_len
}
}
impl MinByteRange for IndexSubtable4Marker {
fn min_byte_range(&self) -> Range<usize> {
0..self.glyph_array_byte_range().end
}
}
impl<'a> FontRead<'a> for IndexSubtable4<'a> {
fn read(data: FontData<'a>) -> Result<Self, ReadError> {
let mut cursor = data.cursor();
cursor.advance::<u16>();
cursor.advance::<u16>();
cursor.advance::<u32>();
let num_glyphs: u32 = cursor.read()?;
let glyph_array_byte_len = (transforms::add(num_glyphs, 1_usize))
.checked_mul(GlyphIdOffsetPair::RAW_BYTE_LEN)
.ok_or(ReadError::OutOfBounds)?;
cursor.advance_by(glyph_array_byte_len);
cursor.finish(IndexSubtable4Marker {
glyph_array_byte_len,
})
}
}
/// [IndexSubTable4](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#indexsubtable3-variable-metrics-glyphs-with-2-byte-offsets): variable-metrics glyphs with sparse glyph codes.
pub type IndexSubtable4<'a> = TableRef<'a, IndexSubtable4Marker>;
#[allow(clippy::needless_lifetimes)]
impl<'a> IndexSubtable4<'a> {
/// Format of this IndexSubTable.
pub fn index_format(&self) -> u16 {
let range = self.shape.index_format_byte_range();
self.data.read_at(range.start).unwrap()
}
/// Format of EBDT image data.
pub fn image_format(&self) -> u16 {
let range = self.shape.image_format_byte_range();
self.data.read_at(range.start).unwrap()
}
/// Offset to image data in EBDT table.
pub fn image_data_offset(&self) -> u32 {
let range = self.shape.image_data_offset_byte_range();
self.data.read_at(range.start).unwrap()
}
/// Array length.
pub fn num_glyphs(&self) -> u32 {
let range = self.shape.num_glyphs_byte_range();
self.data.read_at(range.start).unwrap()
}
/// One per glyph.
pub fn glyph_array(&self) -> &'a [GlyphIdOffsetPair] {
let range = self.shape.glyph_array_byte_range();
self.data.read_array(range).unwrap()
}
}
#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for IndexSubtable4<'a> {
fn type_name(&self) -> &str {
"IndexSubtable4"
}
fn get_field(&self, idx: usize) -> Option<Field<'a>> {
match idx {
0usize => Some(Field::new("index_format", self.index_format())),
1usize => Some(Field::new("image_format", self.image_format())),
2usize => Some(Field::new("image_data_offset", self.image_data_offset())),
3usize => Some(Field::new("num_glyphs", self.num_glyphs())),
4usize => Some(Field::new(
"glyph_array",
traversal::FieldType::array_of_records(
stringify!(GlyphIdOffsetPair),
self.glyph_array(),
self.offset_data(),
),
)),
_ => None,
}
}
}
#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for IndexSubtable4<'a> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
(self as &dyn SomeTable<'a>).fmt(f)
}
}
/// [GlyphIdOffsetPair](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#glyphidoffsetpair-record) record.
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct GlyphIdOffsetPair {
/// Glyph ID of glyph present.
pub glyph_id: BigEndian<GlyphId16>,
/// Location in EBDT.
pub sbit_offset: BigEndian<u16>,
}
impl GlyphIdOffsetPair {
/// Glyph ID of glyph present.
pub fn glyph_id(&self) -> GlyphId16 {
self.glyph_id.get()
}
/// Location in EBDT.
pub fn sbit_offset(&self) -> u16 {
self.sbit_offset.get()
}
}
impl FixedSize for GlyphIdOffsetPair {
const RAW_BYTE_LEN: usize = GlyphId16::RAW_BYTE_LEN + u16::RAW_BYTE_LEN;
}
#[cfg(feature = "experimental_traverse")]
impl<'a> SomeRecord<'a> for GlyphIdOffsetPair {
fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
RecordResolver {
name: "GlyphIdOffsetPair",
get_field: Box::new(move |idx, _data| match idx {
0usize => Some(Field::new("glyph_id", self.glyph_id())),
1usize => Some(Field::new("sbit_offset", self.sbit_offset())),
_ => None,
}),
data,
}
}
}
impl Format<u16> for IndexSubtable5Marker {
const FORMAT: u16 = 5;
}
/// [IndexSubTable5](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#indexsubtable5-constant-metrics-glyphs-with-sparse-glyph-codes): constant-metrics glyphs with sparse glyph codes
#[derive(Debug, Clone, Copy)]
#[doc(hidden)]
pub struct IndexSubtable5Marker {
big_metrics_byte_len: usize,
glyph_array_byte_len: usize,
}
impl IndexSubtable5Marker {
pub fn index_format_byte_range(&self) -> Range<usize> {
let start = 0;
start..start + u16::RAW_BYTE_LEN
}
pub fn image_format_byte_range(&self) -> Range<usize> {
let start = self.index_format_byte_range().end;
start..start + u16::RAW_BYTE_LEN
}
pub fn image_data_offset_byte_range(&self) -> Range<usize> {
let start = self.image_format_byte_range().end;
start..start + u32::RAW_BYTE_LEN
}
pub fn image_size_byte_range(&self) -> Range<usize> {
let start = self.image_data_offset_byte_range().end;
start..start + u32::RAW_BYTE_LEN
}
pub fn big_metrics_byte_range(&self) -> Range<usize> {
let start = self.image_size_byte_range().end;
start..start + self.big_metrics_byte_len
}
pub fn num_glyphs_byte_range(&self) -> Range<usize> {
let start = self.big_metrics_byte_range().end;
start..start + u32::RAW_BYTE_LEN
}
pub fn glyph_array_byte_range(&self) -> Range<usize> {
let start = self.num_glyphs_byte_range().end;
start..start + self.glyph_array_byte_len
}
}
impl MinByteRange for IndexSubtable5Marker {
fn min_byte_range(&self) -> Range<usize> {
0..self.glyph_array_byte_range().end
}
}
impl<'a> FontRead<'a> for IndexSubtable5<'a> {
fn read(data: FontData<'a>) -> Result<Self, ReadError> {
let mut cursor = data.cursor();
cursor.advance::<u16>();
cursor.advance::<u16>();
cursor.advance::<u32>();
cursor.advance::<u32>();
let big_metrics_byte_len = BigGlyphMetrics::RAW_BYTE_LEN;
cursor.advance_by(big_metrics_byte_len);
let num_glyphs: u32 = cursor.read()?;
let glyph_array_byte_len = (num_glyphs as usize)
.checked_mul(GlyphId16::RAW_BYTE_LEN)
.ok_or(ReadError::OutOfBounds)?;
cursor.advance_by(glyph_array_byte_len);
cursor.finish(IndexSubtable5Marker {
big_metrics_byte_len,
glyph_array_byte_len,
})
}
}
/// [IndexSubTable5](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#indexsubtable5-constant-metrics-glyphs-with-sparse-glyph-codes): constant-metrics glyphs with sparse glyph codes
pub type IndexSubtable5<'a> = TableRef<'a, IndexSubtable5Marker>;
#[allow(clippy::needless_lifetimes)]
impl<'a> IndexSubtable5<'a> {
/// Format of this IndexSubTable.
pub fn index_format(&self) -> u16 {
let range = self.shape.index_format_byte_range();
self.data.read_at(range.start).unwrap()
}
/// Format of EBDT image data.
pub fn image_format(&self) -> u16 {
let range = self.shape.image_format_byte_range();
self.data.read_at(range.start).unwrap()
}
/// Offset to image data in EBDT table.
pub fn image_data_offset(&self) -> u32 {
let range = self.shape.image_data_offset_byte_range();
self.data.read_at(range.start).unwrap()
}
/// All glyphs have the same data size.
pub fn image_size(&self) -> u32 {
let range = self.shape.image_size_byte_range();
self.data.read_at(range.start).unwrap()
}
/// All glyphs have the same metrics.
pub fn big_metrics(&self) -> &'a [BigGlyphMetrics] {
let range = self.shape.big_metrics_byte_range();
self.data.read_array(range).unwrap()
}
/// Array length.
pub fn num_glyphs(&self) -> u32 {
let range = self.shape.num_glyphs_byte_range();
self.data.read_at(range.start).unwrap()
}
/// One per glyph, sorted by glyhph ID.
pub fn glyph_array(&self) -> &'a [BigEndian<GlyphId16>] {
let range = self.shape.glyph_array_byte_range();
self.data.read_array(range).unwrap()
}
}
#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for IndexSubtable5<'a> {
fn type_name(&self) -> &str {
"IndexSubtable5"
}
fn get_field(&self, idx: usize) -> Option<Field<'a>> {
match idx {
0usize => Some(Field::new("index_format", self.index_format())),
1usize => Some(Field::new("image_format", self.image_format())),
2usize => Some(Field::new("image_data_offset", self.image_data_offset())),
3usize => Some(Field::new("image_size", self.image_size())),
4usize => Some(Field::new(
"big_metrics",
traversal::FieldType::array_of_records(
stringify!(BigGlyphMetrics),
self.big_metrics(),
self.offset_data(),
),
)),
5usize => Some(Field::new("num_glyphs", self.num_glyphs())),
6usize => Some(Field::new("glyph_array", self.glyph_array())),
_ => None,
}
}
}
#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for IndexSubtable5<'a> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
(self as &dyn SomeTable<'a>).fmt(f)
}
}
/// [EbdtComponent](https://learn.microsoft.com/en-us/typography/opentype/spec/ebdt#ebdtcomponent-record) record.
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct BdtComponent {
/// Component glyph ID.
pub glyph_id: BigEndian<GlyphId16>,
/// Position of component left.
pub x_offset: BigEndian<i8>,
/// Position of component top.
pub y_offset: BigEndian<i8>,
}
impl BdtComponent {
/// Component glyph ID.
pub fn glyph_id(&self) -> GlyphId16 {
self.glyph_id.get()
}
/// Position of component left.
pub fn x_offset(&self) -> i8 {
self.x_offset.get()
}
/// Position of component top.
pub fn y_offset(&self) -> i8 {
self.y_offset.get()
}
}
impl FixedSize for BdtComponent {
const RAW_BYTE_LEN: usize = GlyphId16::RAW_BYTE_LEN + i8::RAW_BYTE_LEN + i8::RAW_BYTE_LEN;
}
#[cfg(feature = "experimental_traverse")]
impl<'a> SomeRecord<'a> for BdtComponent {
fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
RecordResolver {
name: "BdtComponent",
get_field: Box::new(move |idx, _data| match idx {
0usize => Some(Field::new("glyph_id", self.glyph_id())),
1usize => Some(Field::new("x_offset", self.x_offset())),
2usize => Some(Field::new("y_offset", self.y_offset())),
_ => None,
}),
data,
}
}
}
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