pub trait ToAnimatedZero: Sized {
    // Required method
    fn to_animated_zero(&self) -> Result<Self, ()>;
}
Expand description

Returns a value similar to self that represents zero.

This trait is derivable with #[derive(ToAnimatedValue)]. If a field is annotated with #[animation(constant)], a clone of its value will be used instead of calling ToAnimatedZero::to_animated_zero on it.

If a variant is annotated with #[animation(error)], the corresponding match arm is not generated.

Trait bounds for type parameter Foo can be opted out of with #[animation(no_bound(Foo))] on the type definition.

Required Methods§

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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.

This is not the necessarily the same as the initial value of a property. For example, the initial value of ‘stroke-width’ is 1, but the zero value is 0, since adding 1 to the underlying value will not produce the underlying value.

Implementations on Foreign Types§

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impl<T> ToAnimatedZero for Vec<T>where T: ToAnimatedZero,

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

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impl ToAnimatedZero for i32

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

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impl ToAnimatedZero for f64

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

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impl<T> ToAnimatedZero for Box<T>where T: ToAnimatedZero,

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

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impl<T> ToAnimatedZero for Option<T>where T: ToAnimatedZero,

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

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impl<T> ToAnimatedZero for Box<[T]>where T: ToAnimatedZero,

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

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impl ToAnimatedZero for f32

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

Implementors§

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impl ToAnimatedZero for AnimationValue

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impl ToAnimatedZero for T

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impl ToAnimatedZero for AngleOrPercentage

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impl ToAnimatedZero for NumberOrPercentage

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impl ToAnimatedZero for CalcLengthPercentageLeaf

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impl ToAnimatedZero for MinMaxOp

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impl ToAnimatedZero for ModRemOp

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impl ToAnimatedZero for RoundingStrategy

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impl ToAnimatedZero for FontSizeKeyword

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impl ToAnimatedZero for DProperty

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impl ToAnimatedZero for IsAbsolute

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impl ToAnimatedZero for PathCommand

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impl ToAnimatedZero for AbsoluteColor

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impl ToAnimatedZero for style::properties::generated::longhands::background_position_x::computed_value::OwnedList<<T as ToAnimatedValue>::AnimatedValue>

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impl ToAnimatedZero for style::properties::generated::longhands::background_position_y::computed_value::OwnedList<<T as ToAnimatedValue>::AnimatedValue>

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impl ToAnimatedZero for style::properties::generated::longhands::background_size::computed_value::OwnedList<<T as ToAnimatedValue>::AnimatedValue>

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impl ToAnimatedZero for style::properties::generated::longhands::box_shadow::computed_value::OwnedList<<T as ToAnimatedValue>::AnimatedValue>

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impl ToAnimatedZero for style::properties::generated::longhands::filter::computed_value::OwnedList<<T as ToAnimatedValue>::AnimatedValue>

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impl ToAnimatedZero for style::properties::generated::longhands::text_shadow::computed_value::OwnedList<<T as ToAnimatedValue>::AnimatedValue>

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impl ToAnimatedZero for Angle

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impl ToAnimatedZero for FontSize

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impl ToAnimatedZero for CSSPixelLength

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impl ToAnimatedZero for CalcLengthPercentage

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impl ToAnimatedZero for LengthPercentage

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impl ToAnimatedZero for OffsetRotate

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impl ToAnimatedZero for Percentage

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impl ToAnimatedZero for Au

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impl ToAnimatedZero for LetterSpacing

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impl ToAnimatedZero for KeywordInfo

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impl ToAnimatedZero for ArcFlag

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impl ToAnimatedZero for CoordPair

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impl ToAnimatedZero for SVGPathData

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impl ToAnimatedZero for FontVariationSettings

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impl ToAnimatedZero for Transform

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impl ToAnimatedZero for TransformOperation

Build an equivalent ‘identity transform function list’ based on an existing transform list. http://dev.w3.org/csswg/css-transforms/#none-transform-animation

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impl ToAnimatedZero for GridTemplateComponent

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impl ToAnimatedZero for Color

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impl ToAnimatedZero for AnimatedFilter

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impl<A, B> ToAnimatedZero for Either<A, B>where A: ToAnimatedZero, B: ToAnimatedZero,

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impl<Angle> ToAnimatedZero for FontStyle<Angle>where Angle: ToAnimatedZero,

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impl<B, U> ToAnimatedZero for ClipPath<B, U>

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impl<B, U> ToAnimatedZero for ShapeOutside<B, U>

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impl<C> ToAnimatedZero for GenericColorOrAuto<C>where C: ToAnimatedZero,

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impl<C> ToAnimatedZero for GenericSVGPaintFallback<C>where C: ToAnimatedZero,

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impl<C> ToAnimatedZero for GenericCaretColor<C>where C: ToAnimatedZero,

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impl<C, U> ToAnimatedZero for GenericSVGPaintKind<C, U>where C: ToAnimatedZero,

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impl<Color> ToAnimatedZero for GenericScrollbarColor<Color>where Color: ToAnimatedZero,

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impl<Color, SizeLength, BlurShapeLength, ShapeLength> ToAnimatedZero for GenericBoxShadow<Color, SizeLength, BlurShapeLength, ShapeLength>where Color: ToAnimatedZero, SizeLength: ToAnimatedZero, BlurShapeLength: ToAnimatedZero, ShapeLength: ToAnimatedZero,

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impl<Color, SizeLength, ShapeLength> ToAnimatedZero for GenericSimpleShadow<Color, SizeLength, ShapeLength>where Color: ToAnimatedZero, SizeLength: ToAnimatedZero, ShapeLength: ToAnimatedZero,

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impl<Color, Url> ToAnimatedZero for GenericSVGPaint<Color, Url>where Color: ToAnimatedZero,

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impl<Factor> ToAnimatedZero for GenericFontSizeAdjust<Factor>where Factor: ToAnimatedZero,

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impl<Function> ToAnimatedZero for OffsetPath<Function>

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impl<H, V> ToAnimatedZero for GenericOffsetPosition<H, V>where H: ToAnimatedZero, V: ToAnimatedZero,

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impl<H, V> ToAnimatedZero for GenericPosition<H, V>where H: ToAnimatedZero, V: ToAnimatedZero,

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impl<H, V, Depth> ToAnimatedZero for GenericTransformOrigin<H, V, Depth>where H: ToAnimatedZero, V: ToAnimatedZero, Depth: ToAnimatedZero,

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impl<I> ToAnimatedZero for GenericZIndex<I>where I: ToAnimatedZero,

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impl<I> ToAnimatedZero for GenericLineClamp<I>where I: ToAnimatedZero,

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impl<L> ToAnimatedZero for GenericContainIntrinsicSize<L>where L: ToAnimatedZero,

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impl<L> ToAnimatedZero for VerticalAlign<L>

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impl<L> ToAnimatedZero for GenericCalcNode<L>where L: ToAnimatedZero,

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impl<L> ToAnimatedZero for GenericSVGLength<L>where L: ToAnimatedZero,

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impl<L> ToAnimatedZero for GenericSVGStrokeDashArray<L>where L: ToAnimatedZero,

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impl<L> ToAnimatedZero for GenericTextDecorationLength<L>where L: ToAnimatedZero,

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impl<L> ToAnimatedZero for BorderSpacing<L>where L: ToAnimatedZero,

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impl<L> ToAnimatedZero for GenericBorderCornerRadius<L>where L: ToAnimatedZero,

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impl<L> ToAnimatedZero for Size2D<L>where L: ToAnimatedZero,

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impl<L, N> ToAnimatedZero for GenericLengthOrNumber<L, N>where L: ToAnimatedZero, N: ToAnimatedZero,

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impl<LP, N> ToAnimatedZero for GenericBorderImageSideWidth<LP, N>where LP: ToAnimatedZero, N: ToAnimatedZero,

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impl<LengthOrAuto> ToAnimatedZero for GenericClipRect<LengthOrAuto>where LengthOrAuto: ToAnimatedZero,

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impl<LengthPercent> ToAnimatedZero for GenericBackgroundSize<LengthPercent>where LengthPercent: ToAnimatedZero,

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impl<LengthPercent> ToAnimatedZero for GenericLengthPercentageOrAuto<LengthPercent>where LengthPercent: ToAnimatedZero,

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impl<LengthPercent> ToAnimatedZero for GenericLengthPercentageOrNormal<LengthPercent>where LengthPercent: ToAnimatedZero,

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impl<LengthPercent> ToAnimatedZero for GenericMaxSize<LengthPercent>where LengthPercent: ToAnimatedZero,

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impl<LengthPercent> ToAnimatedZero for GenericSize<LengthPercent>where LengthPercent: ToAnimatedZero,

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impl<LengthPercentage> ToAnimatedZero for GenericTextIndent<LengthPercentage>where LengthPercentage: ToAnimatedZero,

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impl<LengthPercentage, Length> ToAnimatedZero for GenericTranslate<LengthPercentage, Length>where LengthPercentage: Zero + ZeroNoPercent + ToAnimatedZero, Length: Zero + ToAnimatedZero,

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impl<N> ToAnimatedZero for AspectRatio<N>

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impl<N, L> ToAnimatedZero for LineHeight<N, L>

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impl<NonNegativeLength> ToAnimatedZero for GenericPerspective<NonNegativeLength>where NonNegativeLength: ToAnimatedZero,

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impl<Number> ToAnimatedZero for GenericScale<Number>where Number: ToAnimatedZero,

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impl<Number, Angle> ToAnimatedZero for GenericRotate<Number, Angle>where Number: ToAnimatedZero, Angle: ToAnimatedZero,

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impl<NumberOrPercentage> ToAnimatedZero for GenericBorderImageSlice<NumberOrPercentage>where NumberOrPercentage: ToAnimatedZero,

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impl<OpacityType> ToAnimatedZero for GenericSVGOpacity<OpacityType>where OpacityType: ToAnimatedZero,

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impl<Pos> ToAnimatedZero for GenericPositionOrAuto<Pos>where Pos: ToAnimatedZero,

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impl<PositiveInteger> ToAnimatedZero for ColumnCount<PositiveInteger>where PositiveInteger: ToAnimatedZero,

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impl<R> ToAnimatedZero for GenericClipRectOrAuto<R>where R: ToAnimatedZero,

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impl<S> ToAnimatedZero for GenericFlexBasis<S>where S: ToAnimatedZero,

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impl<T> ToAnimatedZero for Optional<T>where T: ToAnimatedZero,

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impl<T> ToAnimatedZero for ArcSlice<T>where T: ToAnimatedZero,

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impl<T> ToAnimatedZero for OwnedSlice<T>where T: ToAnimatedZero,

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impl<T> ToAnimatedZero for Rect<T>where T: ToAnimatedZero,

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impl<T> ToAnimatedZero for GreaterThanOrEqualToOne<T>where T: ToAnimatedZero,

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impl<T> ToAnimatedZero for NonNegative<T>where T: ToAnimatedZero,

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impl<T> ToAnimatedZero for ZeroToOne<T>where T: ToAnimatedZero,

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impl<U> ToAnimatedZero for GenericUrlOrNone<U>where U: ToAnimatedZero,