read_fonts/generated/
generated_cvar.rs

1// THIS FILE IS AUTOGENERATED.
2// Any changes to this file will be overwritten.
3// For more information about how codegen works, see font-codegen/README.md
4
5#[allow(unused_imports)]
6use crate::codegen_prelude::*;
7
8/// The [cvar](https://learn.microsoft.com/en-us/typography/opentype/spec/cvar) table.
9#[derive(Debug, Clone, Copy)]
10#[doc(hidden)]
11pub struct CvarMarker {
12    tuple_variation_headers_byte_len: usize,
13}
14
15impl CvarMarker {
16    pub fn version_byte_range(&self) -> Range<usize> {
17        let start = 0;
18        start..start + MajorMinor::RAW_BYTE_LEN
19    }
20
21    pub fn tuple_variation_count_byte_range(&self) -> Range<usize> {
22        let start = self.version_byte_range().end;
23        start..start + TupleVariationCount::RAW_BYTE_LEN
24    }
25
26    pub fn data_offset_byte_range(&self) -> Range<usize> {
27        let start = self.tuple_variation_count_byte_range().end;
28        start..start + Offset16::RAW_BYTE_LEN
29    }
30
31    pub fn tuple_variation_headers_byte_range(&self) -> Range<usize> {
32        let start = self.data_offset_byte_range().end;
33        start..start + self.tuple_variation_headers_byte_len
34    }
35}
36
37impl MinByteRange for CvarMarker {
38    fn min_byte_range(&self) -> Range<usize> {
39        0..self.tuple_variation_headers_byte_range().end
40    }
41}
42
43impl TopLevelTable for Cvar<'_> {
44    /// `cvar`
45    const TAG: Tag = Tag::new(b"cvar");
46}
47
48impl<'a> FontRead<'a> for Cvar<'a> {
49    fn read(data: FontData<'a>) -> Result<Self, ReadError> {
50        let mut cursor = data.cursor();
51        cursor.advance::<MajorMinor>();
52        cursor.advance::<TupleVariationCount>();
53        cursor.advance::<Offset16>();
54        let tuple_variation_headers_byte_len = cursor.remaining_bytes();
55        cursor.advance_by(tuple_variation_headers_byte_len);
56        cursor.finish(CvarMarker {
57            tuple_variation_headers_byte_len,
58        })
59    }
60}
61
62/// The [cvar](https://learn.microsoft.com/en-us/typography/opentype/spec/cvar) table.
63pub type Cvar<'a> = TableRef<'a, CvarMarker>;
64
65#[allow(clippy::needless_lifetimes)]
66impl<'a> Cvar<'a> {
67    /// Major/minor version number of the CVT variations table — set to (1,0).
68    pub fn version(&self) -> MajorMinor {
69        let range = self.shape.version_byte_range();
70        self.data.read_at(range.start).unwrap()
71    }
72
73    /// A packed field. The high 4 bits are flags, and the low 12 bits
74    /// are the number of tuple variation tables for this glyph. The
75    /// number of tuple variation tables can be any number between 1
76    /// and 4095.
77    pub fn tuple_variation_count(&self) -> TupleVariationCount {
78        let range = self.shape.tuple_variation_count_byte_range();
79        self.data.read_at(range.start).unwrap()
80    }
81
82    /// Offset from the start of the 'cvar' table to the serialized data.
83    pub fn data_offset(&self) -> Offset16 {
84        let range = self.shape.data_offset_byte_range();
85        self.data.read_at(range.start).unwrap()
86    }
87
88    /// Attempt to resolve [`data_offset`][Self::data_offset].
89    pub fn data(&self) -> Result<FontData<'a>, ReadError> {
90        let data = self.data;
91        self.data_offset().resolve(data)
92    }
93
94    /// Array of tuple variation headers.
95    pub fn tuple_variation_headers(&self) -> VarLenArray<'a, TupleVariationHeader> {
96        let range = self.shape.tuple_variation_headers_byte_range();
97        VarLenArray::read(self.data.split_off(range.start).unwrap()).unwrap()
98    }
99}
100
101#[cfg(feature = "experimental_traverse")]
102impl<'a> SomeTable<'a> for Cvar<'a> {
103    fn type_name(&self) -> &str {
104        "Cvar"
105    }
106    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
107        match idx {
108            0usize => Some(Field::new("version", self.version())),
109            1usize => Some(Field::new(
110                "tuple_variation_count",
111                traversal::FieldType::Unknown,
112            )),
113            2usize => Some(Field::new("data_offset", traversal::FieldType::Unknown)),
114            3usize => Some(Field::new(
115                "tuple_variation_headers",
116                traversal::FieldType::Unknown,
117            )),
118            _ => None,
119        }
120    }
121}
122
123#[cfg(feature = "experimental_traverse")]
124#[allow(clippy::needless_lifetimes)]
125impl<'a> std::fmt::Debug for Cvar<'a> {
126    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
127        (self as &dyn SomeTable<'a>).fmt(f)
128    }
129}
read_fonts/generated/generated_cvar.rs

read_fonts/generated/
generated_cvar.rs
