read_fonts/generated/
generated_hvar.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 [HVAR (Horizontal Metrics Variations)](https://docs.microsoft.com/en-us/typography/opentype/spec/hvar) table
9#[derive(Debug, Clone, Copy)]
10#[doc(hidden)]
11pub struct HvarMarker {}
12
13impl HvarMarker {
14    pub fn version_byte_range(&self) -> Range<usize> {
15        let start = 0;
16        start..start + MajorMinor::RAW_BYTE_LEN
17    }
18
19    pub fn item_variation_store_offset_byte_range(&self) -> Range<usize> {
20        let start = self.version_byte_range().end;
21        start..start + Offset32::RAW_BYTE_LEN
22    }
23
24    pub fn advance_width_mapping_offset_byte_range(&self) -> Range<usize> {
25        let start = self.item_variation_store_offset_byte_range().end;
26        start..start + Offset32::RAW_BYTE_LEN
27    }
28
29    pub fn lsb_mapping_offset_byte_range(&self) -> Range<usize> {
30        let start = self.advance_width_mapping_offset_byte_range().end;
31        start..start + Offset32::RAW_BYTE_LEN
32    }
33
34    pub fn rsb_mapping_offset_byte_range(&self) -> Range<usize> {
35        let start = self.lsb_mapping_offset_byte_range().end;
36        start..start + Offset32::RAW_BYTE_LEN
37    }
38}
39
40impl MinByteRange for HvarMarker {
41    fn min_byte_range(&self) -> Range<usize> {
42        0..self.rsb_mapping_offset_byte_range().end
43    }
44}
45
46impl TopLevelTable for Hvar<'_> {
47    /// `HVAR`
48    const TAG: Tag = Tag::new(b"HVAR");
49}
50
51impl<'a> FontRead<'a> for Hvar<'a> {
52    fn read(data: FontData<'a>) -> Result<Self, ReadError> {
53        let mut cursor = data.cursor();
54        cursor.advance::<MajorMinor>();
55        cursor.advance::<Offset32>();
56        cursor.advance::<Offset32>();
57        cursor.advance::<Offset32>();
58        cursor.advance::<Offset32>();
59        cursor.finish(HvarMarker {})
60    }
61}
62
63/// The [HVAR (Horizontal Metrics Variations)](https://docs.microsoft.com/en-us/typography/opentype/spec/hvar) table
64pub type Hvar<'a> = TableRef<'a, HvarMarker>;
65
66#[allow(clippy::needless_lifetimes)]
67impl<'a> Hvar<'a> {
68    /// Major version number of the horizontal metrics variations table — set to 1.
69    /// Minor version number of the horizontal metrics variations table — set to 0.
70    pub fn version(&self) -> MajorMinor {
71        let range = self.shape.version_byte_range();
72        self.data.read_at(range.start).unwrap()
73    }
74
75    /// Offset in bytes from the start of this table to the item variation store table.
76    pub fn item_variation_store_offset(&self) -> Offset32 {
77        let range = self.shape.item_variation_store_offset_byte_range();
78        self.data.read_at(range.start).unwrap()
79    }
80
81    /// Attempt to resolve [`item_variation_store_offset`][Self::item_variation_store_offset].
82    pub fn item_variation_store(&self) -> Result<ItemVariationStore<'a>, ReadError> {
83        let data = self.data;
84        self.item_variation_store_offset().resolve(data)
85    }
86
87    /// Offset in bytes from the start of this table to the delta-set index mapping for advance widths (may be NULL).
88    pub fn advance_width_mapping_offset(&self) -> Nullable<Offset32> {
89        let range = self.shape.advance_width_mapping_offset_byte_range();
90        self.data.read_at(range.start).unwrap()
91    }
92
93    /// Attempt to resolve [`advance_width_mapping_offset`][Self::advance_width_mapping_offset].
94    pub fn advance_width_mapping(&self) -> Option<Result<DeltaSetIndexMap<'a>, ReadError>> {
95        let data = self.data;
96        self.advance_width_mapping_offset().resolve(data)
97    }
98
99    /// Offset in bytes from the start of this table to the delta-set index mapping for left side bearings (may be NULL).
100    pub fn lsb_mapping_offset(&self) -> Nullable<Offset32> {
101        let range = self.shape.lsb_mapping_offset_byte_range();
102        self.data.read_at(range.start).unwrap()
103    }
104
105    /// Attempt to resolve [`lsb_mapping_offset`][Self::lsb_mapping_offset].
106    pub fn lsb_mapping(&self) -> Option<Result<DeltaSetIndexMap<'a>, ReadError>> {
107        let data = self.data;
108        self.lsb_mapping_offset().resolve(data)
109    }
110
111    /// Offset in bytes from the start of this table to the delta-set index mapping for right side bearings (may be NULL).
112    pub fn rsb_mapping_offset(&self) -> Nullable<Offset32> {
113        let range = self.shape.rsb_mapping_offset_byte_range();
114        self.data.read_at(range.start).unwrap()
115    }
116
117    /// Attempt to resolve [`rsb_mapping_offset`][Self::rsb_mapping_offset].
118    pub fn rsb_mapping(&self) -> Option<Result<DeltaSetIndexMap<'a>, ReadError>> {
119        let data = self.data;
120        self.rsb_mapping_offset().resolve(data)
121    }
122}
123
124#[cfg(feature = "experimental_traverse")]
125impl<'a> SomeTable<'a> for Hvar<'a> {
126    fn type_name(&self) -> &str {
127        "Hvar"
128    }
129    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
130        match idx {
131            0usize => Some(Field::new("version", self.version())),
132            1usize => Some(Field::new(
133                "item_variation_store_offset",
134                FieldType::offset(
135                    self.item_variation_store_offset(),
136                    self.item_variation_store(),
137                ),
138            )),
139            2usize => Some(Field::new(
140                "advance_width_mapping_offset",
141                FieldType::offset(
142                    self.advance_width_mapping_offset(),
143                    self.advance_width_mapping(),
144                ),
145            )),
146            3usize => Some(Field::new(
147                "lsb_mapping_offset",
148                FieldType::offset(self.lsb_mapping_offset(), self.lsb_mapping()),
149            )),
150            4usize => Some(Field::new(
151                "rsb_mapping_offset",
152                FieldType::offset(self.rsb_mapping_offset(), self.rsb_mapping()),
153            )),
154            _ => None,
155        }
156    }
157}
158
159#[cfg(feature = "experimental_traverse")]
160#[allow(clippy::needless_lifetimes)]
161impl<'a> std::fmt::Debug for Hvar<'a> {
162    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
163        (self as &dyn SomeTable<'a>).fmt(f)
164    }
165}
read_fonts/generated/generated_hvar.rs

read_fonts/generated/
generated_hvar.rs
