Enum style::color::component::ColorComponent

#[repr(u8)]
pub enum ColorComponent<ValueType> {
    None,
    Value(ValueType),
    Calc(Box<GenericCalcNode<Leaf>>),
    AlphaOmitted,
}

A single color component.

Variants

None

The “none” keyword.

Value(ValueType)

A absolute value.

Calc(Box<GenericCalcNode<Leaf>>)

A calc() value.

AlphaOmitted

Used when alpha components are not specified.

Implementations

impl<ValueType> ColorComponent<ValueType>

pub fn is_none(&self) -> bool

Return true if the component is “none”.

impl<ValueType: ColorComponentType> ColorComponent<ValueType>

pub fn parse<'i, 't>( context: &ParserContext<'_>, input: &mut Parser<'i, 't>, allow_none: bool, ) -> Result<Self, ParseError<'i>>

Parse a single ColorComponent.

pub fn resolve( &self, origin_color: Option<&AbsoluteColor>, ) -> Result<Option<ValueType>, ()>

Resolve a ColorComponent into a float. None is “none”.

impl ColorComponent<NumberOrPercentageComponent>

fn could_be_number(&self) -> bool

Return true if the value contained inside is/can resolve to a percentage. Also returns false if the node is invalid somehow.

fn could_be_percentage(&self) -> bool

Return true if the value contained inside is/can resolve to a percentage. Also returns false if the node is invalid somehow.

Trait Implementations

impl<ValueType: Clone> Clone for ColorComponent<ValueType>

fn clone(&self) -> ColorComponent<ValueType>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<ValueType: Debug> Debug for ColorComponent<ValueType>

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

Formats the value using the given formatter.

impl From<ColorComponent<f32>> for ComponentDetails

fn from(value: ColorComponent<f32>) -> Self

Converts to this type from the input type.

impl<ValueType> MallocSizeOf for ColorComponent<ValueType>

where ValueType: 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<ValueType: PartialEq> PartialEq for ColorComponent<ValueType>

fn eq(&self, other: &ColorComponent<ValueType>) -> bool

This method tests for self and other values to be equal, and is used by ==.

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.

impl<ValueType> ToAnimatedValue for ColorComponent<ValueType>

type AnimatedValue = ColorComponent<ValueType>

The type of the animated value.

fn to_animated_value(self, _context: &Context<'_>) -> Self::AnimatedValue

Converts this value to an animated value.

fn from_animated_value(animated: Self::AnimatedValue) -> Self

Converts back an animated value into a computed value.

impl<ValueType: ToCss> ToCss for ColorComponent<ValueType>

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

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.

impl<ValueType> ToShmem for ColorComponent<ValueType>

where ValueType: ToShmem,

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

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

impl<ValueType> StructuralPartialEq for ColorComponent<ValueType>