Struct FontMetricsData

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pub struct FontMetricsData {
    pub widths: Vec<u16>,
    pub upem: u16,
    pub ascender: i16,
    pub descender: i16,
    pub font_data: Option<Vec<u8>>,
    pub face_index: u32,
    pub simple_unicode_to_code: Option<HashMap<u16, u8>>,
}

Expand description

Resolved font metrics for a typeface, used for accurate text measurement.

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§widths: Vec<u16>

Unicode-indexed widths derived from PDF /Widths or font data.

§upem: u16

Units per em of the font.

§ascender: i16

Font ascender in font units.

§descender: i16

Font descender in font units (typically negative).

§font_data: Option<Vec<u8>>

Raw font data for glyph ID lookup (Identity-H fonts).

§face_index: u32

Font face index within a collection.

§simple_unicode_to_code: Option<HashMap<u16, u8>>

Optional Unicode->code map for simple PDF fonts with custom encodings.

When Identity-H glyph encoding is unavailable (font_data == None), this map lets us emit bytes in the source font’s actual encoding space instead of assuming WinAnsi for every simple font.

Trait Implementations§

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impl Clone for FontMetricsData

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fn clone(&self) -> FontMetricsData

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl Debug for FontMetricsData

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl UnwindSafe for FontMetricsData

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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