#[non_exhaustive]
pub enum GlyphImageFormat { Png, BitmapMono, BitmapMonoPacked, BitmapGray2, BitmapGray2Packed, BitmapGray4, BitmapGray4Packed, BitmapGray8, BitmapPremulBgra32, }
Expand description

Valid formats for a GlyphImage.

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
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Png

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BitmapMono

A monochrome bitmap.

The most significant bit of the first byte corresponds to the top-left pixel, proceeding through succeeding bits moving left to right. The data for each row is padded to a byte boundary, so the next row begins with the most significant bit of a new byte. 1 corresponds to black, and 0 to white.

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BitmapMonoPacked

A packed monochrome bitmap.

The most significant bit of the first byte corresponds to the top-left pixel, proceeding through succeeding bits moving left to right. Data is tightly packed with no padding. 1 corresponds to black, and 0 to white.

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BitmapGray2

A grayscale bitmap with 2 bits per pixel.

The most significant bits of the first byte corresponds to the top-left pixel, proceeding through succeeding bits moving left to right. The data for each row is padded to a byte boundary, so the next row begins with the most significant bit of a new byte.

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BitmapGray2Packed

A packed grayscale bitmap with 2 bits per pixel.

The most significant bits of the first byte corresponds to the top-left pixel, proceeding through succeeding bits moving left to right. Data is tightly packed with no padding.

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BitmapGray4

A grayscale bitmap with 4 bits per pixel.

The most significant bits of the first byte corresponds to the top-left pixel, proceeding through succeeding bits moving left to right. The data for each row is padded to a byte boundary, so the next row begins with the most significant bit of a new byte.

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BitmapGray4Packed

A packed grayscale bitmap with 4 bits per pixel.

The most significant bits of the first byte corresponds to the top-left pixel, proceeding through succeeding bits moving left to right. Data is tightly packed with no padding.

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BitmapGray8

A grayscale bitmap with 8 bits per pixel.

The first byte corresponds to the top-left pixel, proceeding through succeeding bytes moving left to right.

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BitmapPremulBgra32

A color bitmap with 32 bits per pixel.

The first group of four bytes corresponds to the top-left pixel, proceeding through succeeding pixels moving left to right. Each byte corresponds to a color channel and the channels within a pixel are in blue, green, red, alpha order. Color values are pre-multiplied by the alpha. For example, the color “full-green with half translucency” is encoded as \x00\x80\x00\x80, and not \x00\xFF\x00\x80.

Trait Implementations§

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impl Clone for GlyphImageFormat

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fn clone(&self) -> GlyphImageFormat

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for GlyphImageFormat

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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<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> 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<U> 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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.