Struct NonNegative

#[repr(transparent)]
pub(crate) struct NonNegative<T>(pub T);

A wrapper of Non-negative values.

Tuple Fields

0: T

Implementations

impl NonNegative<CSSPixelLength>

pub fn new(px: f32) -> NonNegative<CSSPixelLength>

Create a NonNegativeLength.

pub fn px(&self) -> f32

Return the pixel value of |NonNegativeLength|.

pub fn clamp(self) -> NonNegative<CSSPixelLength>

Ensures it is non negative

impl NonNegative<LengthPercentage>

pub fn to_used_value(&self, containing_length: Au) -> Au

Returns the used value.

pub fn maybe_to_used_value(&self, containing_length: Option<Au>) -> Option<Au>

Convert the computed value into used value.

impl NonNegative<Percentage>

pub fn hundred() -> NonNegative<Percentage>

100%

impl NonNegative<NumberOrPercentage>

pub fn hundred_percent() -> NonNegative<NumberOrPercentage>

Returns the 100% value.

impl NonNegative<Length>

pub fn from_px(px_value: f32) -> NonNegative<Length>

Get an absolute length from a px value.

pub fn parse_quirky<'i, 't>( context: &ParserContext<'_>, input: &mut Parser<'i, 't>, allow_quirks: AllowQuirks, ) -> Result<NonNegative<Length>, ParseError<'i, StyleParseErrorKind<'i>>>

Parses a non-negative length, optionally with quirks.

impl NonNegative<LengthPercentage>

pub fn zero_percent() -> NonNegative<LengthPercentage>

Returns a 0% value.

pub fn parse_quirky<'i, 't>( context: &ParserContext<'_>, input: &mut Parser<'i, 't>, allow_quirks: AllowQuirks, ) -> Result<NonNegative<LengthPercentage>, ParseError<'i, StyleParseErrorKind<'i>>>

Parses a length or a percentage, allowing the unitless length quirk. https://quirks.spec.whatwg.org/#the-unitless-length-quirk

pub fn parse_non_negative_with_anchor_size<'i, 't>( context: &ParserContext<'_>, input: &mut Parser<'i, 't>, allow_quirks: AllowQuirks, ) -> Result<NonNegative<LengthPercentage>, ParseError<'i, StyleParseErrorKind<'i>>>

Parses a length or a percentage, allowing the unitless length quirk, as well as allowing anchor-size().

impl NonNegative<Percentage>

pub fn compute(&self) -> Percentage

Convert to ComputedPercentage, for FontFaceRule size-adjust getter.

impl NonNegative<Number>

pub fn new(val: f32) -> NonNegative<Number>

Returns a new non-negative number with the value val.

pub fn get(&self) -> f32

Returns the numeric value.

impl NonNegative<NumberOrPercentage>

pub fn hundred_percent() -> NonNegative<NumberOrPercentage>

Returns the 100% value.

pub fn new_number(n: f32) -> NonNegative<NumberOrPercentage>

Return a particular number.

Trait Implementations

impl<T> Add for NonNegative<T>

where T: Add<Output = T>,

type Output = NonNegative<T>

The resulting type after applying the + operator.

fn add(self, other: NonNegative<T>) -> NonNegative<T>

Performs the + operation.

impl<T> Animate for NonNegative<T>

where T: Animate,

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

Animate a value towards another one, given an animation procedure.

impl<T> Clone for NonNegative<T>

where T: Clone,

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T> ComputeSquaredDistance for NonNegative<T>

where T: ComputeSquaredDistance,

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

Computes the squared distance between two animatable values.

impl<T> Debug for NonNegative<T>

where T: Debug,

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

Formats the value using the given formatter.

impl<'de, T> Deserialize<'de> for NonNegative<T>

where T: Deserialize<'de>,

fn deserialize<__D>( __deserializer: __D, ) -> Result<NonNegative<T>, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<Au> for NonNegative<CSSPixelLength>

fn from(au: Au) -> NonNegative<CSSPixelLength>

Converts to this type from the input type.

impl From<CSSPixelLength> for NonNegative<CSSPixelLength>

fn from(len: CSSPixelLength) -> NonNegative<CSSPixelLength>

Converts to this type from the input type.

impl From<Length> for NonNegative<Length>

fn from(len: Length) -> NonNegative<Length>

Converts to this type from the input type.

impl From<NoCalcLength> for NonNegative<Length>

fn from(len: NoCalcLength) -> NonNegative<Length>

Converts to this type from the input type.

impl From<NoCalcLength> for NonNegative<LengthPercentage>

fn from(len: NoCalcLength) -> NonNegative<LengthPercentage>

Converts to this type from the input type.

impl From<f32> for NonNegative<f32>

fn from(number: f32) -> NonNegative<f32>

Converts to this type from the input type.

impl<T> Hash for NonNegative<T>

where T: Hash,

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<T> MallocSizeOf for NonNegative<T>

where T: MallocSizeOf,

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.

impl One for NonNegative<Number>

fn one() -> NonNegative<Number>

Reutrns the one value.

fn is_one(&self) -> bool

Returns whether this value is one.

impl One for NonNegative<f32>

fn one() -> NonNegative<f32>

Reutrns the one value.

fn is_one(&self) -> bool

Returns whether this value is one.

impl Parse for NonNegative<Integer>

fn parse<'i, 't>( context: &ParserContext<'_>, input: &mut Parser<'i, 't>, ) -> Result<NonNegative<Integer>, ParseError<'i, StyleParseErrorKind<'i>>>

Parse a value of this type.

impl Parse for NonNegative<Length>

fn parse<'i, 't>( context: &ParserContext<'_>, input: &mut Parser<'i, 't>, ) -> Result<NonNegative<Length>, ParseError<'i, StyleParseErrorKind<'i>>>

Parse a value of this type.

impl Parse for NonNegative<LengthPercentage>

fn parse<'i, 't>( context: &ParserContext<'_>, input: &mut Parser<'i, 't>, ) -> Result<NonNegative<LengthPercentage>, ParseError<'i, StyleParseErrorKind<'i>>>

Parse a value of this type.

impl Parse for NonNegative<Number>

fn parse<'i, 't>( context: &ParserContext<'_>, input: &mut Parser<'i, 't>, ) -> Result<NonNegative<Number>, ParseError<'i, StyleParseErrorKind<'i>>>

Parse a value of this type.

impl Parse for NonNegative<NumberOrPercentage>

fn parse<'i, 't>( context: &ParserContext<'_>, input: &mut Parser<'i, 't>, ) -> Result<NonNegative<NumberOrPercentage>, ParseError<'i, StyleParseErrorKind<'i>>>

Parse a value of this type.

impl Parse for NonNegative<Percentage>

fn parse<'i, 't>( context: &ParserContext<'_>, input: &mut Parser<'i, 't>, ) -> Result<NonNegative<Percentage>, ParseError<'i, StyleParseErrorKind<'i>>>

Parse a value of this type.

impl<T> PartialEq for NonNegative<T>

where T: PartialEq,

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

where T: PartialOrd,

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

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<T> Serialize for NonNegative<T>

where T: Serialize,

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<T> SpecifiedValueInfo for NonNegative<T>

where T: SpecifiedValueInfo,

const SUPPORTED_TYPES: u8

Supported CssTypes by the given value type.

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.

impl ToAnimatedValue for NonNegative<CSSPixelLength>

type AnimatedValue = CSSPixelLength

The type of the animated value.

fn to_animated_value( self, context: &Context<'_>, ) -> <NonNegative<CSSPixelLength> as ToAnimatedValue>::AnimatedValue

Converts this value to an animated value.

fn from_animated_value( animated: <NonNegative<CSSPixelLength> as ToAnimatedValue>::AnimatedValue, ) -> NonNegative<CSSPixelLength>

Converts back an animated value into a computed value.

impl ToAnimatedValue for NonNegative<LengthPercentage>

type AnimatedValue = LengthPercentage

The type of the animated value.

fn to_animated_value( self, context: &Context<'_>, ) -> <NonNegative<LengthPercentage> as ToAnimatedValue>::AnimatedValue

Converts this value to an animated value.

fn from_animated_value( animated: <NonNegative<LengthPercentage> as ToAnimatedValue>::AnimatedValue, ) -> NonNegative<LengthPercentage>

Converts back an animated value into a computed value.

impl ToAnimatedValue for NonNegative<NumberOrPercentage>

type AnimatedValue = NumberOrPercentage

The type of the animated value.

fn to_animated_value( self, _: &Context<'_>, ) -> <NonNegative<NumberOrPercentage> as ToAnimatedValue>::AnimatedValue

Converts this value to an animated value.

fn from_animated_value( animated: <NonNegative<NumberOrPercentage> as ToAnimatedValue>::AnimatedValue, ) -> NonNegative<NumberOrPercentage>

Converts back an animated value into a computed value.

impl ToAnimatedValue for NonNegative<Percentage>

type AnimatedValue = Percentage

The type of the animated value.

fn to_animated_value( self, _: &Context<'_>, ) -> <NonNegative<Percentage> as ToAnimatedValue>::AnimatedValue

Converts this value to an animated value.

fn from_animated_value( animated: <NonNegative<Percentage> as ToAnimatedValue>::AnimatedValue, ) -> NonNegative<Percentage>

Converts back an animated value into a computed value.

impl ToAnimatedValue for NonNegative<f32>

type AnimatedValue = f32

The type of the animated value.

fn to_animated_value( self, _: &Context<'_>, ) -> <NonNegative<f32> as ToAnimatedValue>::AnimatedValue

Converts this value to an animated value.

fn from_animated_value( animated: <NonNegative<f32> as ToAnimatedValue>::AnimatedValue, ) -> NonNegative<f32>

Converts back an animated value into a computed value.

impl<T> ToAnimatedZero for NonNegative<T>

where T: ToAnimatedZero,

fn to_animated_zero(&self) -> Result<NonNegative<T>, ()>

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.

impl<T> ToComputedValue for NonNegative<T>

where T: ToComputedValue,

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

The computed value type we’re going to be converted to.

fn from_computed_value( from: &<NonNegative<T> as ToComputedValue>::ComputedValue, ) -> NonNegative<T>

Convert a computed value to specified value form.

fn to_computed_value( &self, context: &Context<'_>, ) -> <NonNegative<T> as ToComputedValue>::ComputedValue

Convert a specified value to a computed value, using itself and the data inside the Context.

impl<T> ToCss for NonNegative<T>

where T: ToCss,

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

where W: Write,

Serialize self in CSS syntax, writing to dest.

fn to_css_string(&self) -> String

Serialize self in CSS syntax and return a string.

fn to_css_cssstring(&self) -> String

Serialize self in CSS syntax and return a CssString.

impl<T> ToResolvedValue for NonNegative<T>

where T: ToResolvedValue,

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

The resolved value type we’re going to be converted to.

fn from_resolved_value( from: <NonNegative<T> as ToResolvedValue>::ResolvedValue, ) -> NonNegative<T>

Convert a resolved value to resolved value form.

fn to_resolved_value( self, context: &Context<'_>, ) -> <NonNegative<T> as ToResolvedValue>::ResolvedValue

Convert a resolved value to a resolved value.

impl<T> ToShmem for NonNegative<T>

where T: ToShmem,

fn to_shmem( &self, builder: &mut SharedMemoryBuilder, ) -> Result<ManuallyDrop<NonNegative<T>>, String>

Clones this value into a form suitable for writing into a SharedMemoryBuilder.

impl<T> ToTyped for NonNegative<T>

fn to_typed(&self) -> Option<TypedValue>

Attempt to convert self into a TypedValue.

impl<T> Zero for NonNegative<T>

where T: Zero,

fn is_zero(&self) -> bool

Returns whether this value is zero.

fn zero() -> NonNegative<T>

Returns the zero value.

impl<T> Copy for NonNegative<T>

where T: Copy,

impl<T> StructuralPartialEq for NonNegative<T>