Struct Rgba

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pub struct Rgba {
    pub r: u8,
    pub g: u8,
    pub b: u8,
    pub a: u8,
}

Expand description

An RGBA colour with 8 bits per channel.

Each channel (r, g, b, a) ranges from 0 to 255.

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§r: u8

Red channel.

§g: u8

Green channel.

§b: u8

Blue channel.

§a: u8

Alpha channel (0 = fully transparent, 255 = fully opaque).

Implementations§

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impl Rgba

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pub const WHITE: Rgba

Pure white, fully opaque.

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pub const BLACK: Rgba

Pure black, fully opaque.

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pub const TRANSPARENT: Rgba

Fully transparent black.

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pub const INK_BLACK: Rgba

Darkest shade of the default 4-step ink ramp used for menu/text rendering (matches the historical InkColor::Black RGBA value).

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pub const INK_DARK_GRAY: Rgba

Dark-gray shade of the default ink ramp.

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pub const INK_LIGHT_GRAY: Rgba

Light-gray shade of the default ink ramp.

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pub const INK_WHITE: Rgba

Lightest shade of the default ink ramp (paper background).

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pub const fn new(r: u8, g: u8, b: u8, a: u8) -> Rgba

Create a colour from individual channel values.

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pub const fn rgb(r: u8, g: u8, b: u8) -> Rgba

Create an opaque colour from RGB values (alpha = 255).

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pub const fn to_array(self) -> [u8; 4]

Return the channels as a flat [r, g, b, a] byte array.

Trait Implementations§

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impl Clone for Rgba

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fn clone(&self) -> Rgba

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 Copy for Rgba

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impl Debug for Rgba

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

Formats the value using the given formatter. Read more

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fn from(arr: [u8; 4]) -> Rgba

Convert a [r, g, b, a] byte array into an Rgba.

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impl PartialEq for Rgba

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

Equality operator ==. Read more

1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more

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impl StructuralPartialEq for Rgba

Auto Trait Implementations§

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impl Freeze for Rgba

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impl RefUnwindSafe for Rgba

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impl Send for Rgba

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impl Sync for Rgba

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impl Unpin for Rgba

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impl UnsafeUnpin for Rgba

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impl UnwindSafe for Rgba

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<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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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> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.

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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.

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fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.

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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.

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impl<T> Downcast<T> for T

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fn downcast(&self) -> &T

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impl<T> DowncastSync for T
where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Send + Sync> ⓘ

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.

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