read_fonts/generated/
generated_hdmx.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 [Horizontal Device Metrics](https://learn.microsoft.com/en-us/typography/opentype/spec/hdmx) table.
9#[derive(Debug, Clone, Copy)]
10#[doc(hidden)]
11pub struct HdmxMarker {
12    num_glyphs: u16,
13    records_byte_len: usize,
14}
15
16impl HdmxMarker {
17    pub fn version_byte_range(&self) -> Range<usize> {
18        let start = 0;
19        start..start + u16::RAW_BYTE_LEN
20    }
21
22    pub fn num_records_byte_range(&self) -> Range<usize> {
23        let start = self.version_byte_range().end;
24        start..start + u16::RAW_BYTE_LEN
25    }
26
27    pub fn size_device_record_byte_range(&self) -> Range<usize> {
28        let start = self.num_records_byte_range().end;
29        start..start + u32::RAW_BYTE_LEN
30    }
31
32    pub fn records_byte_range(&self) -> Range<usize> {
33        let start = self.size_device_record_byte_range().end;
34        start..start + self.records_byte_len
35    }
36}
37
38impl MinByteRange for HdmxMarker {
39    fn min_byte_range(&self) -> Range<usize> {
40        0..self.records_byte_range().end
41    }
42}
43
44impl TopLevelTable for Hdmx<'_> {
45    /// `hdmx`
46    const TAG: Tag = Tag::new(b"hdmx");
47}
48
49impl ReadArgs for Hdmx<'_> {
50    type Args = u16;
51}
52
53impl<'a> FontReadWithArgs<'a> for Hdmx<'a> {
54    fn read_with_args(data: FontData<'a>, args: &u16) -> Result<Self, ReadError> {
55        let num_glyphs = *args;
56        let mut cursor = data.cursor();
57        cursor.advance::<u16>();
58        let num_records: u16 = cursor.read()?;
59        let size_device_record: u32 = cursor.read()?;
60        let records_byte_len = (num_records as usize)
61            .checked_mul(<DeviceRecord as ComputeSize>::compute_size(&(
62                num_glyphs,
63                size_device_record,
64            ))?)
65            .ok_or(ReadError::OutOfBounds)?;
66        cursor.advance_by(records_byte_len);
67        cursor.finish(HdmxMarker {
68            num_glyphs,
69            records_byte_len,
70        })
71    }
72}
73
74impl<'a> Hdmx<'a> {
75    /// A constructor that requires additional arguments.
76    ///
77    /// This type requires some external state in order to be
78    /// parsed.
79    pub fn read(data: FontData<'a>, num_glyphs: u16) -> Result<Self, ReadError> {
80        let args = num_glyphs;
81        Self::read_with_args(data, &args)
82    }
83}
84
85/// The [Horizontal Device Metrics](https://learn.microsoft.com/en-us/typography/opentype/spec/hdmx) table.
86pub type Hdmx<'a> = TableRef<'a, HdmxMarker>;
87
88#[allow(clippy::needless_lifetimes)]
89impl<'a> Hdmx<'a> {
90    /// Table version number (set to 0).
91    pub fn version(&self) -> u16 {
92        let range = self.shape.version_byte_range();
93        self.data.read_at(range.start).unwrap()
94    }
95
96    /// Number of device records.
97    pub fn num_records(&self) -> u16 {
98        let range = self.shape.num_records_byte_range();
99        self.data.read_at(range.start).unwrap()
100    }
101
102    /// Size of device record, 32-bit aligned.
103    pub fn size_device_record(&self) -> u32 {
104        let range = self.shape.size_device_record_byte_range();
105        self.data.read_at(range.start).unwrap()
106    }
107
108    /// Array of device records.
109    pub fn records(&self) -> ComputedArray<'a, DeviceRecord<'a>> {
110        let range = self.shape.records_byte_range();
111        self.data
112            .read_with_args(range, &(self.num_glyphs(), self.size_device_record()))
113            .unwrap()
114    }
115
116    pub(crate) fn num_glyphs(&self) -> u16 {
117        self.shape.num_glyphs
118    }
119}
120
121#[cfg(feature = "experimental_traverse")]
122impl<'a> SomeTable<'a> for Hdmx<'a> {
123    fn type_name(&self) -> &str {
124        "Hdmx"
125    }
126    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
127        match idx {
128            0usize => Some(Field::new("version", self.version())),
129            1usize => Some(Field::new("num_records", self.num_records())),
130            2usize => Some(Field::new("size_device_record", self.size_device_record())),
131            3usize => Some(Field::new(
132                "records",
133                traversal::FieldType::computed_array(
134                    "DeviceRecord",
135                    self.records(),
136                    self.offset_data(),
137                ),
138            )),
139            _ => None,
140        }
141    }
142}
143
144#[cfg(feature = "experimental_traverse")]
145#[allow(clippy::needless_lifetimes)]
146impl<'a> std::fmt::Debug for Hdmx<'a> {
147    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
148        (self as &dyn SomeTable<'a>).fmt(f)
149    }
150}
read_fonts/generated/generated_hdmx.rs

read_fonts/generated/
generated_hdmx.rs
