FilterMode

image_renderer::paint

Enum FilterMode 

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pub enum FilterMode {
    Nearest,
    Linear,
}
Expand description

滤镜模式

用于图片缩放时的插值算法选择

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Nearest

最近邻插值（速度快，质量低）

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Linear

线性插值（速度和质量平衡）

Trait Implementations§

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impl Clone for FilterMode

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fn clone(&self) -> FilterMode

Returns a duplicate 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 FilterMode

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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 Default for FilterMode

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl PartialEq for FilterMode

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

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

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 FilterMode

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impl Eq for FilterMode

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impl StructuralPartialEq for FilterMode

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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<Src, Scheme> ApproxFrom<Src, Scheme> for Src
where Scheme: ApproxScheme,

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type Err = NoError

The error type produced by a failed conversion.
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fn approx_from(src: Src) -> Result<Src, <Src as ApproxFrom<Src, Scheme>>::Err>

Convert the given value into an approximately equivalent representation.
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impl<Dst, Src, Scheme> ApproxInto<Dst, Scheme> for Src
where Dst: ApproxFrom<Src, Scheme>, Scheme: ApproxScheme,

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type Err = <Dst as ApproxFrom<Src, Scheme>>::Err

The error type produced by a failed conversion.
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fn approx_into(self) -> Result<Dst, <Src as ApproxInto<Dst, Scheme>>::Err>

Convert the subject into an approximately equivalent representation.
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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> 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, Dst> ConvAsUtil<Dst> for T

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fn approx(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst>,

Approximate the subject with the default scheme.
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fn approx_by<Scheme>(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst, Scheme>, Scheme: ApproxScheme,

Approximate the subject with a specific scheme.
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impl<T> ConvUtil for T

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fn approx_as<Dst>(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst>,

Approximate the subject to a given type with the default scheme.
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fn approx_as_by<Dst, Scheme>(self) -> Result<Dst, Self::Err>
where Self: Sized + ApproxInto<Dst, Scheme>, Scheme: ApproxScheme,

Approximate the subject to a given type with a specific scheme.
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fn into_as<Dst>(self) -> Dst
where Self: Sized + Into<Dst>,

Convert the subject to a given type.
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fn try_as<Dst>(self) -> Result<Dst, Self::Err>
where Self: Sized + TryInto<Dst>,

Attempt to convert the subject to a given type.
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fn value_as<Dst>(self) -> Result<Dst, Self::Err>
where Self: Sized + ValueInto<Dst>,

Attempt a value conversion of the subject to a given type.
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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<SS, SP> SupersetOf<SS> for SP
where SS: SubsetOf<SP>,

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fn to_subset(&self) -> Option<SS>

The inverse inclusion map: attempts to construct self from the equivalent element of its superset. Read more
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fn is_in_subset(&self) -> bool

Checks if self is actually part of its subset T (and can be converted to it).
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fn to_subset_unchecked(&self) -> SS

Use with care! Same as self.to_subset but without any property checks. Always succeeds.
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fn from_subset(element: &SS) -> SP

The inclusion map: converts self to the equivalent element of its superset.
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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<Src> TryFrom<Src> for Src

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type Err = NoError

The error type produced by a failed conversion.
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fn try_from(src: Src) -> Result<Src, <Src as TryFrom<Src>>::Err>

Convert the given value into the subject type.
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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<Src, Dst> TryInto<Dst> for Src
where Dst: TryFrom<Src>,

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type Err = <Dst as TryFrom<Src>>::Err

The error type produced by a failed conversion.
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fn try_into(self) -> Result<Dst, <Src as TryInto<Dst>>::Err>

Convert the subject into the destination type.
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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.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<Src> ValueFrom<Src> for Src

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type Err = NoError

The error type produced by a failed conversion.
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fn value_from(src: Src) -> Result<Src, <Src as ValueFrom<Src>>::Err>

Convert the given value into an exactly equivalent representation.
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impl<Src, Dst> ValueInto<Dst> for Src
where Dst: ValueFrom<Src>,

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type Err = <Dst as ValueFrom<Src>>::Err

The error type produced by a failed conversion.
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fn value_into(self) -> Result<Dst, <Src as ValueInto<Dst>>::Err>

Convert the subject into an exactly equivalent representation.
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impl<T> Scalar for T
where T: 'static + Clone + PartialEq + Debug,