Enum png::ColorType

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#[repr(u8)]
pub enum ColorType { Grayscale = 0, Rgb = 2, Indexed = 3, GrayscaleAlpha = 4, Rgba = 6, }
Expand description

Describes how a pixel is encoded.

Variants§

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Grayscale = 0

1 grayscale sample.

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Rgb = 2

1 red sample, 1 green sample, 1 blue sample.

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Indexed = 3

1 sample for the palette index.

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GrayscaleAlpha = 4

1 grayscale sample, then 1 alpha sample.

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Rgba = 6

1 red sample, 1 green sample, 1 blue sample, and finally, 1 alpha sample.

Implementations§

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impl ColorType

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pub fn samples(self) -> usize

Returns the number of samples used per pixel encoded in this way.

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pub fn from_u8(n: u8) -> Option<ColorType>

u8 -> Self. Temporary solution until Rust provides a canonical one.

Trait Implementations§

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impl Clone for ColorType

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fn clone(&self) -> ColorType

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 ColorType

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

Formats the value using the given formatter. Read more
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impl PartialEq for ColorType

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fn eq(&self, other: &ColorType) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for ColorType

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impl Eq for ColorType

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impl StructuralEq for ColorType

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impl StructuralPartialEq for ColorType

Auto Trait Implementations§

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> 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.