pub type NonNegativeLength = NonNegative<Length>;
Expand description

A wrapper of Length, whose value must be >= 0.

Aliased Type§

struct NonNegativeLength(pub CSSPixelLength);

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§0: CSSPixelLength

Implementations§

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impl NonNegativeLength

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pub fn new(px: CSSFloat) -> Self

Create a NonNegativeLength.

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pub fn px(&self) -> CSSFloat

Return the pixel value of |NonNegativeLength|.

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pub fn clamp(self) -> Self

Ensures it is non negative

Trait Implementations§

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impl<T: Add<Output = T>> Add<NonNegative<T>> for NonNegative<T>

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type Output = NonNegative<T>

The resulting type after applying the + operator.
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fn add(self, other: Self) -> Self

Performs the + operation. Read more
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impl<T> Animate for NonNegative<T>where T: Animate,

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fn animate(&self, other: &Self, procedure: Procedure) -> Result<Self, ()>

Animate a value towards another one, given an animation procedure.
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impl<T: Clone> Clone for NonNegative<T>

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fn clone(&self) -> NonNegative<T>

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<T> ComputeSquaredDistance for NonNegative<T>where T: ComputeSquaredDistance,

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fn compute_squared_distance(&self, other: &Self) -> Result<SquaredDistance, ()>

Computes the squared distance between two animatable values.
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impl<T: Debug> Debug for NonNegative<T>

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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<'de, T> Deserialize<'de> for NonNegative<T>where T: Deserialize<'de>,

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

Deserialize this value from the given Serde deserializer. Read more
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impl From<Au> for NonNegativeLength

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fn from(au: Au) -> Self

Converts to this type from the input type.
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impl From<CSSPixelLength> for NonNegativeLength

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fn from(len: Length) -> Self

Converts to this type from the input type.
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impl<T: Hash> Hash for NonNegative<T>

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<T> MallocSizeOf for NonNegative<T>where T: MallocSizeOf,

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fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize

Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself.
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impl<T: PartialEq> PartialEq<NonNegative<T>> for NonNegative<T>

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fn eq(&self, other: &NonNegative<T>) -> 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<T: PartialOrd> PartialOrd<NonNegative<T>> for NonNegative<T>

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fn partial_cmp(&self, other: &NonNegative<T>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl<T> Serialize for NonNegative<T>where T: Serialize,

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

Serialize this value into the given Serde serializer. Read more
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impl<T> SpecifiedValueInfo for NonNegative<T>where T: SpecifiedValueInfo,

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const SUPPORTED_TYPES: u8 = _

Supported CssTypes by the given value type. Read more
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fn collect_completion_keywords(_f: &mut dyn FnMut(&[&'static str]))

Collect value starting words for the given specified value type. This includes keyword and function names which can appear at the beginning of a value of this type. Read more
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impl ToAnimatedValue for NonNegativeLength

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type AnimatedValue = CSSPixelLength

The type of the animated value.
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fn to_animated_value(self) -> Self::AnimatedValue

Converts this value to an animated value.
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fn from_animated_value(animated: Self::AnimatedValue) -> Self

Converts back an animated value into a computed value.
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impl<T> ToAnimatedZero for NonNegative<T>where T: ToAnimatedZero,

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fn to_animated_zero(&self) -> Result<Self, ()>

Returns a value that, when added with an underlying value, will produce the underlying value. This is used for SMIL animation’s “by-animation” where SMIL first interpolates from the zero value to the ‘by’ value, and then adds the result to the underlying value. Read more
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impl<T> ToComputedValue for NonNegative<T>where T: ToComputedValue,

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type ComputedValue = NonNegative<<T as ToComputedValue>::ComputedValue>

The computed value type we’re going to be converted to.
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fn from_computed_value(from: &Self::ComputedValue) -> Self

Convert a computed value to specified value form. Read more
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fn to_computed_value(&self, context: &Context<'_>) -> Self::ComputedValue

Convert a specified value to a computed value, using itself and the data inside the Context.
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impl<T> ToCss for NonNegative<T>where T: ToCss,

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fn to_css<W>(&self, dest: &mut CssWriter<'_, W>) -> Resultwhere W: Write,

Serialize self in CSS syntax, writing to dest.
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fn to_css_string(&self) -> String

Serialize self in CSS syntax and return a string. Read more
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impl<T> ToResolvedValue for NonNegative<T>where T: ToResolvedValue,

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type ResolvedValue = NonNegative<<T as ToResolvedValue>::ResolvedValue>

The resolved value type we’re going to be converted to.
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fn from_resolved_value(from: Self::ResolvedValue) -> Self

Convert a resolved value to resolved value form.
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fn to_resolved_value(self, context: &Context<'_>) -> Self::ResolvedValue

Convert a resolved value to a resolved value.
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impl<T> ToShmem for NonNegative<T>where T: ToShmem,

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fn to_shmem(&self, builder: &mut SharedMemoryBuilder) -> Result<Self>

Clones this value into a form suitable for writing into a SharedMemoryBuilder. Read more
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impl<T: Zero> Zero for NonNegative<T>

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fn is_zero(&self) -> bool

Returns whether this value is zero.
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fn zero() -> Self

Returns the zero value.
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impl<T: Copy> Copy for NonNegative<T>

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impl<T> StructuralPartialEq for NonNegative<T>