Enum zng::image::ImageDownscale

pub enum ImageDownscale {
    Fit(Size2D<Px, Px>),
    Fill(Size2D<Px, Px>),
}

Defines how an image is downscaled after decoding.

The image aspect ratio is preserved in both modes, the image is not upscaled, if it already fits the size constraints if will not be resized.

Variants

Fit(Size2D<Px, Px>)

Image is downscaled so that both dimensions fit inside the size.

Fill(Size2D<Px, Px>)

Image is downscaled so that at least one dimension fits inside the size.

Implementations

impl ImageDownscale

pub fn resize_dimensions(self, source_size: Size2D<Px, Px>) -> Size2D<Px, Px>

Compute the expected final size if the downscale is applied on an image of source_size.

Trait Implementations

impl Clone for ImageDownscale

fn clone(&self) -> ImageDownscale

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ImageDownscale

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ImageDownscale

fn deserialize<__D>( __deserializer: __D, ) -> Result<ImageDownscale, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<Px> for ImageDownscale

fn from(fit: Px) -> ImageDownscale

Fit splat

impl From<Size2D<Px, Px>> for ImageDownscale

fn from(fit: Size2D<Px, Px>) -> ImageDownscale

Fit

impl Hash for ImageDownscale

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl IntoVar<ImageDownscale> for Px

type Var = LocalVar<ImageDownscale>

Variable type that will wrap the T value.

fn into_var(self) -> <Px as IntoVar<ImageDownscale>>::Var

Converts the source value into a var.

fn into_boxed_var(self) -> Box<dyn VarBoxed<T>>

where Self: Sized,

Converts into BoxedVar<T>.

impl IntoVar<ImageDownscale> for Size2D<Px, Px>

type Var = LocalVar<ImageDownscale>

Variable type that will wrap the T value.

fn into_var(self) -> <Size2D<Px, Px> as IntoVar<ImageDownscale>>::Var

Converts the source value into a var.

fn into_boxed_var(self) -> Box<dyn VarBoxed<T>>

where Self: Sized,

Converts into BoxedVar<T>.

impl IntoVar<Option<ImageDownscale>> for ImageDownscale

type Var = LocalVar<Option<ImageDownscale>>

Variable type that will wrap the T value.

fn into_var(self) -> <ImageDownscale as IntoVar<Option<ImageDownscale>>>::Var

Converts the source value into a var.

fn into_boxed_var(self) -> Box<dyn VarBoxed<T>>

where Self: Sized,

Converts into BoxedVar<T>.

impl PartialEq for ImageDownscale

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ImageDownscale

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for ImageDownscale

impl Eq for ImageDownscale

impl IntoValue<ImageDownscale> for Px

impl IntoValue<ImageDownscale> for Size2D<Px, Px>

impl IntoValue<Option<ImageDownscale>> for ImageDownscale

impl StructuralPartialEq for ImageDownscale