/src/fontations/read-fonts/generated/generated_hmtx.rs

Source
// 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::*;

/// The [hmtx (Horizontal Metrics)](https://docs.microsoft.com/en-us/typography/opentype/spec/hmtx) table
#[derive(Debug, Clone, Copy)]
#[doc(hidden)]
pub struct HmtxMarker {
    h_metrics_byte_len: usize,
    left_side_bearings_byte_len: usize,
}

impl HmtxMarker {
    pub fn h_metrics_byte_range(&self) -> Range<usize> {
        let start = 0;
        start..start + self.h_metrics_byte_len
    }

    pub fn left_side_bearings_byte_range(&self) -> Range<usize> {
        let start = self.h_metrics_byte_range().end;
        start..start + self.left_side_bearings_byte_len
    }
}

impl MinByteRange for HmtxMarker {
    fn min_byte_range(&self) -> Range<usize> {
        0..self.left_side_bearings_byte_range().end
    }
}

impl TopLevelTable for Hmtx<'_> {
    /// `hmtx`
    const TAG: Tag = Tag::new(b"hmtx");
}

impl ReadArgs for Hmtx<'_> {
    type Args = u16;
}

impl<'a> FontReadWithArgs<'a> for Hmtx<'a> {
    fn read_with_args(data: FontData<'a>, args: &u16) -> Result<Self, ReadError> {
        let number_of_h_metrics = *args;
        let mut cursor = data.cursor();
        let h_metrics_byte_len = (number_of_h_metrics as usize)
            .checked_mul(LongMetric::RAW_BYTE_LEN)
            .ok_or(ReadError::OutOfBounds)?;
        cursor.advance_by(h_metrics_byte_len);
        let left_side_bearings_byte_len =
            cursor.remaining_bytes() / i16::RAW_BYTE_LEN * i16::RAW_BYTE_LEN;
        cursor.advance_by(left_side_bearings_byte_len);
        cursor.finish(HmtxMarker {
            h_metrics_byte_len,
            left_side_bearings_byte_len,
        })
    }
}

impl<'a> Hmtx<'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_h_metrics: u16) -> Result<Self, ReadError> {
        let args = number_of_h_metrics;
        Self::read_with_args(data, &args)
    }
}

/// The [hmtx (Horizontal Metrics)](https://docs.microsoft.com/en-us/typography/opentype/spec/hmtx) table
pub type Hmtx<'a> = TableRef<'a, HmtxMarker>;

#[allow(clippy::needless_lifetimes)]
impl<'a> Hmtx<'a> {
    /// Paired advance width/height and left/top side bearing values for each
    /// glyph. Records are indexed by glyph ID.
    pub fn h_metrics(&self) -> &'a [LongMetric] {
        let range = self.shape.h_metrics_byte_range();
        self.data.read_array(range).unwrap()
    }

    /// Leading (left/top) side bearings for glyph IDs greater than or equal to
    /// numberOfLongMetrics.
    pub fn left_side_bearings(&self) -> &'a [BigEndian<i16>] {
        let range = self.shape.left_side_bearings_byte_range();
        self.data.read_array(range).unwrap()
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for Hmtx<'a> {
    fn type_name(&self) -> &str {
        "Hmtx"
    }
    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
        match idx {
            0usize => Some(Field::new(
                "h_metrics",
                traversal::FieldType::array_of_records(
                    stringify!(LongMetric),
                    self.h_metrics(),
                    self.offset_data(),
                ),
            )),
            1usize => Some(Field::new("left_side_bearings", self.left_side_bearings())),
            _ => None,
        }
    }
}

#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for Hmtx<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        (self as &dyn SomeTable<'a>).fmt(f)
    }
}

#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct LongMetric {
    /// Advance width/height, in font design units.
    pub advance: BigEndian<u16>,
    /// Glyph leading (left/top) side bearing, in font design units.
    pub side_bearing: BigEndian<i16>,
}

impl LongMetric {
    /// Advance width/height, in font design units.
    pub fn advance(&self) -> u16 {
        self.advance.get()
    }

    /// Glyph leading (left/top) side bearing, in font design units.
    pub fn side_bearing(&self) -> i16 {
        self.side_bearing.get()
    }
}

impl FixedSize for LongMetric {
    const RAW_BYTE_LEN: usize = u16::RAW_BYTE_LEN + i16::RAW_BYTE_LEN;
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeRecord<'a> for LongMetric {
    fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
        RecordResolver {
            name: "LongMetric",
            get_field: Box::new(move |idx, _data| match idx {
                0usize => Some(Field::new("advance", self.advance())),
                1usize => Some(Field::new("side_bearing", self.side_bearing())),
                _ => None,
            }),
            data,
        }
    }
}

Line	Count	Source
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)]
6		use crate::codegen_prelude::*;
7
8		/// The [hmtx (Horizontal Metrics)](https://docs.microsoft.com/en-us/typography/opentype/spec/hmtx) table
9		#[derive(Debug, Clone, Copy)]
10		#[doc(hidden)]
11		pub struct HmtxMarker {
12		h_metrics_byte_len: usize,
13		left_side_bearings_byte_len: usize,
14		}
15
16		impl HmtxMarker {
17	20.5M	pub fn h_metrics_byte_range(&self) -> Range<usize> {
18	20.5M	let start = 0;
19	20.5M	start..start + self.h_metrics_byte_len
20	20.5M	}
21
22	6.96M	pub fn left_side_bearings_byte_range(&self) -> Range<usize> {
23	6.96M	let start = self.h_metrics_byte_range().end;
24	6.96M	start..start + self.left_side_bearings_byte_len
25	6.96M	}
26		}
27
28		impl MinByteRange for HmtxMarker {
29	0	fn min_byte_range(&self) -> Range<usize> {
30	0	0..self.left_side_bearings_byte_range().end
31	0	}
32		}
33
34		impl TopLevelTable for Hmtx<'_> {
35		/// `hmtx`
36		const TAG: Tag = Tag::new(b"hmtx");
37		}
38
39		impl ReadArgs for Hmtx<'_> {
40		type Args = u16;
41		}
42
43		impl<'a> FontReadWithArgs<'a> for Hmtx<'a> {
44	2.56M	fn read_with_args(data: FontData<'a>, args: &u16) -> Result<Self, ReadError> {
45	2.56M	let number_of_h_metrics = *args;
46	2.56M	let mut cursor = data.cursor();
47	2.56M	let h_metrics_byte_len = (number_of_h_metrics as usize)
48	2.56M	.checked_mul(LongMetric::RAW_BYTE_LEN)
49	2.56M	.ok_or(ReadError::OutOfBounds)?;
50	2.56M	cursor.advance_by(h_metrics_byte_len);
51	2.56M	let left_side_bearings_byte_len =
52	2.56M	cursor.remaining_bytes() / i16::RAW_BYTE_LEN * i16::RAW_BYTE_LEN;
53	2.56M	cursor.advance_by(left_side_bearings_byte_len);
54	2.56M	cursor.finish(HmtxMarker {
55	2.56M	h_metrics_byte_len,
56	2.56M	left_side_bearings_byte_len,
57	2.56M	})
58	2.56M	}
59		}
60
61		impl<'a> Hmtx<'a> {
62		/// A constructor that requires additional arguments.
63		///
64		/// This type requires some external state in order to be
65		/// parsed.
66	2.56M	pub fn read(data: FontData<'a>, number_of_h_metrics: u16) -> Result<Self, ReadError> {
67	2.56M	let args = number_of_h_metrics;
68	2.56M	Self::read_with_args(data, &args)
69	2.56M	}
70		}
71
72		/// The [hmtx (Horizontal Metrics)](https://docs.microsoft.com/en-us/typography/opentype/spec/hmtx) table
73		pub type Hmtx<'a> = TableRef<'a, HmtxMarker>;
74
75		#[allow(clippy::needless_lifetimes)]
76		impl<'a> Hmtx<'a> {
77		/// Paired advance width/height and left/top side bearing values for each
78		/// glyph. Records are indexed by glyph ID.
79	13.5M	pub fn h_metrics(&self) -> &'a [LongMetric] {
80	13.5M	let range = self.shape.h_metrics_byte_range();
81	13.5M	self.data.read_array(range).unwrap()
82	13.5M	}
83
84		/// Leading (left/top) side bearings for glyph IDs greater than or equal to
85		/// numberOfLongMetrics.
86	6.96M	pub fn left_side_bearings(&self) -> &'a [BigEndian<i16>] {
87	6.96M	let range = self.shape.left_side_bearings_byte_range();
88	6.96M	self.data.read_array(range).unwrap()
89	6.96M	}
90		}
91
92		#[cfg(feature = "experimental_traverse")]
93		impl<'a> SomeTable<'a> for Hmtx<'a> {
94		fn type_name(&self) -> &str {
95		"Hmtx"
96		}
97		fn get_field(&self, idx: usize) -> Option<Field<'a>> {
98		match idx {
99		0usize => Some(Field::new(
100		"h_metrics",
101		traversal::FieldType::array_of_records(
102		stringify!(LongMetric),
103		self.h_metrics(),
104		self.offset_data(),
105		),
106		)),
107		1usize => Some(Field::new("left_side_bearings", self.left_side_bearings())),
108		_ => None,
109		}
110		}
111		}
112
113		#[cfg(feature = "experimental_traverse")]
114		#[allow(clippy::needless_lifetimes)]
115		impl<'a> std::fmt::Debug for Hmtx<'a> {
116		fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
117		(self as &dyn SomeTable<'a>).fmt(f)
118		}
119		}
120
121		#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
122		#[repr(C)]
123		#[repr(packed)]
124		pub struct LongMetric {
125		/// Advance width/height, in font design units.
126		pub advance: BigEndian<u16>,
127		/// Glyph leading (left/top) side bearing, in font design units.
128		pub side_bearing: BigEndian<i16>,
129		}
130
131		impl LongMetric {
132		/// Advance width/height, in font design units.
133	6.49M	pub fn advance(&self) -> u16 {
134	6.49M	self.advance.get()
135	6.49M	}
136
137		/// Glyph leading (left/top) side bearing, in font design units.
138	4.51M	pub fn side_bearing(&self) -> i16 {
139	4.51M	self.side_bearing.get()
140	4.51M	}
141		}
142
143		impl FixedSize for LongMetric {
144		const RAW_BYTE_LEN: usize = u16::RAW_BYTE_LEN + i16::RAW_BYTE_LEN;
145		}
146
147		#[cfg(feature = "experimental_traverse")]
148		impl<'a> SomeRecord<'a> for LongMetric {
149		fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
150		RecordResolver {
151		name: "LongMetric",
152		get_field: Box::new(move \|idx, _data\| match idx {
153		0usize => Some(Field::new("advance", self.advance())),
154		1usize => Some(Field::new("side_bearing", self.side_bearing())),
155		_ => None,
156		}),
157		data,
158		}
159		}
160		}

Coverage Report

Created: 2025-11-16 06:56