Struct lodepng::RGBA

#[repr(C)]
pub struct RGBA<ComponentType, AlphaComponentType = ComponentType> {
    pub r: ComponentType,
    pub g: ComponentType,
    pub b: ComponentType,
    pub a: AlphaComponentType,
}

The RGBA pixel

The component type can be u8 (aliased as RGBA8), u16 (aliased as RGBA16), or any other type (but simple copyable types are recommended.)

You can specify a different type for alpha, but it's only for special cases (e.g. if you use a newtype like RGBA<LinearLight<u16>, u16>).

Fields

r: ComponentType

Red

g: ComponentType

Green

b: ComponentType

Blue

a: AlphaComponentType

Alpha

Methods

impl<T> RGBA<T, T> where
    T: Clone, 

fn new(r: T, g: T, b: T, a: T) -> RGBA<T, T>

impl<T> RGBA<T, T> where
    T: Clone, 

fn iter(&self) -> Cloned<Iter<T>>

Iterate over all components (length=4)

impl<T, A> RGBA<T, A> where
    T: Clone, 

fn rgb(&self) -> RGB<T>

Copy RGB components out of the RGBA struct

impl<T, A> RGBA<T, A>

fn rgb_mut(&mut self) -> &mut RGB<T>

Provide a mutable view of only RGB components (leaving out alpha). Useful to change color without changing opacity.

impl<T, A> RGBA<T, A> where
    A: Clone,
    T: Copy, 

fn map_rgb<F, U, B>(&self, f: F) -> RGBA<U, B> where
    B: From<A> + Clone,
    F: FnMut(T) -> U,
    U: Clone, 

Create new RGBA with the same alpha value, but different RGB values

Trait Implementations

impl<T> ComponentSlice<T> for RGBA<T, T>

fn as_slice(&self) -> &[T]

fn as_mut_slice(&mut self) -> &mut [T]

impl<ComponentType, AlphaComponentType> Ord for RGBA<ComponentType, AlphaComponentType> where
    AlphaComponentType: Ord,
    ComponentType: Ord, 

fn cmp(&self, __arg_0: &RGBA<ComponentType, AlphaComponentType>) -> Ordering

impl<ComponentType, AlphaComponentType> Copy for RGBA<ComponentType, AlphaComponentType> where
    AlphaComponentType: Copy,
    ComponentType: Copy, 

impl<ComponentType, AlphaComponentType> Hash for RGBA<ComponentType, AlphaComponentType> where
    AlphaComponentType: Hash,
    ComponentType: Hash, 

fn hash<__HComponentTypeAlphaComponentType>(
    &self,
    __arg_0: &mut __HComponentTypeAlphaComponentType
) where
    __HComponentTypeAlphaComponentType: Hasher, 

impl<ComponentType, AlphaComponentType> Clone for RGBA<ComponentType, AlphaComponentType> where
    AlphaComponentType: Clone,
    ComponentType: Clone, 

fn clone(&self) -> RGBA<ComponentType, AlphaComponentType>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<ComponentType, AlphaComponentType> Eq for RGBA<ComponentType, AlphaComponentType> where
    AlphaComponentType: Eq,
    ComponentType: Eq, 

impl<T> From<BGRA<T, T>> for RGBA<T, T>

fn from(other: BGRA<T, T>) -> RGBA<T, T>

Performs the conversion.

impl From<RGBA<u16, u16>> for RGBA<f32, f32>

fn from(other: RGBA<u16, u16>) -> RGBA<f32, f32>

Performs the conversion.

impl<T> From<BGR<T>> for RGBA<T, u8> where
    T: Copy, 

Assumes 255 is opaque

fn from(other: BGR<T>) -> RGBA<T, u8>

Performs the conversion.

impl From<RGBA<i16, i16>> for RGBA<f32, f32>

fn from(other: RGBA<i16, i16>) -> RGBA<f32, f32>

Performs the conversion.

impl From<RGBA<u8, u8>> for RGBA<f64, f64>

fn from(other: RGBA<u8, u8>) -> RGBA<f64, f64>

Performs the conversion.

impl From<RGBA<u16, u16>> for RGBA<i32, i32>

fn from(other: RGBA<u16, u16>) -> RGBA<i32, i32>

Performs the conversion.

impl From<RGBA<u8, u8>> for RGBA<f32, f32>

fn from(other: RGBA<u8, u8>) -> RGBA<f32, f32>

Performs the conversion.

impl From<RGBA<f32, f32>> for RGBA<f64, f64>

fn from(other: RGBA<f32, f32>) -> RGBA<f64, f64>

Performs the conversion.

impl From<RGBA<i16, i16>> for RGBA<f64, f64>

fn from(other: RGBA<i16, i16>) -> RGBA<f64, f64>

Performs the conversion.

impl From<RGBA<i32, i32>> for RGBA<f64, f64>

fn from(other: RGBA<i32, i32>) -> RGBA<f64, f64>

Performs the conversion.

impl<T> From<RGB<T>> for RGBA<T, u8> where
    T: Copy, 

Assumes 255 is opaque

fn from(other: RGB<T>) -> RGBA<T, u8>

Performs the conversion.

impl From<RGBA<u16, u16>> for RGBA<f64, f64>

fn from(other: RGBA<u16, u16>) -> RGBA<f64, f64>

Performs the conversion.

impl<ComponentType, AlphaComponentType> PartialEq<RGBA<ComponentType, AlphaComponentType>> for RGBA<ComponentType, AlphaComponentType> where
    AlphaComponentType: PartialEq<AlphaComponentType>,
    ComponentType: PartialEq<ComponentType>, 

fn eq(&self, __arg_0: &RGBA<ComponentType, AlphaComponentType>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &RGBA<ComponentType, AlphaComponentType>) -> bool

This method tests for !=.

impl<T> Add<T> for RGBA<T, T> where
    T: Copy + Add<T, Output = T> + Clone + Add<T>, 

type Output = RGBA<T, T>

fn add(self, r: T) -> <RGBA<T, T> as Add<T>>::Output

impl<T> Add<RGBA<T, T>> for RGBA<T, T> where
    T: Add<T>, 

type Output = RGBA<<T as Add<T>>::Output, <T as Add<T>>::Output>

fn add(self, other: RGBA<T, T>) -> <RGBA<T, T> as Add<RGBA<T, T>>>::Output

impl<ComponentType, AlphaComponentType> Debug for RGBA<ComponentType, AlphaComponentType> where
    AlphaComponentType: Debug,
    ComponentType: Debug, 

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.

impl<T> Mul<T> for RGBA<T, T> where
    T: Copy + Mul<T, Output = T> + Clone + Mul<T>, 

type Output = RGBA<T, T>

fn mul(self, r: T) -> <RGBA<T, T> as Mul<T>>::Output

impl<T> FromIterator<T> for RGBA<T, T>

fn from_iter<I>(into_iter: I) -> RGBA<T, T> where
    I: IntoIterator<Item = T>, 

Takes exactly 4 elements from the iterator and creates a new instance. Panics if there are fewer elements in the iterator.

impl<T, A> Display for RGBA<T, A> where
    A: Display,
    T: Display, 

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

Formats the value using the given formatter.

impl<T> Sub<RGBA<T, T>> for RGBA<T, T> where
    T: Sub<T>, 

type Output = RGBA<<T as Sub<T>>::Output, <T as Sub<T>>::Output>

fn sub(self, other: RGBA<T, T>) -> <RGBA<T, T> as Sub<RGBA<T, T>>>::Output

impl<ComponentType, AlphaComponentType> Default for RGBA<ComponentType, AlphaComponentType> where
    AlphaComponentType: Default,
    ComponentType: Default, 

fn default() -> RGBA<ComponentType, AlphaComponentType>

Returns the "default value" for a type.

impl<T, B> ComponentMap<RGBA<B, B>, T, B> for RGBA<T, T> where
    T: Copy, 

fn map<F>(&self, f: F) -> RGBA<B, B> where
    F: FnMut(T) -> B, 

impl<ComponentType, AlphaComponentType> PartialOrd<RGBA<ComponentType, AlphaComponentType>> for RGBA<ComponentType, AlphaComponentType> where
    AlphaComponentType: PartialOrd<AlphaComponentType>,
    ComponentType: PartialOrd<ComponentType>, 

fn partial_cmp(
    &self,
    __arg_0: &RGBA<ComponentType, AlphaComponentType>
) -> Option<Ordering>

fn lt(&self, __arg_0: &RGBA<ComponentType, AlphaComponentType>) -> bool

fn le(&self, __arg_0: &RGBA<ComponentType, AlphaComponentType>) -> bool

fn gt(&self, __arg_0: &RGBA<ComponentType, AlphaComponentType>) -> bool

fn ge(&self, __arg_0: &RGBA<ComponentType, AlphaComponentType>) -> bool