Struct style::values::specified::percentage::Percentage

pub struct Percentage {
    value: CSSFloat,
    calc_clamping_mode: Option<AllowedNumericType>,
}

A percentage value.

Fields

value: CSSFloat

The percentage value as a float.

[0 .. 100%] maps to [0.0 .. 1.0]

calc_clamping_mode: Option<AllowedNumericType>

If this percentage came from a calc() expression, this tells how clamping should be done on the value.

Implementations

impl Percentage

pub(super) fn new_with_clamping_mode( value: CSSFloat, calc_clamping_mode: Option<AllowedNumericType>, ) -> Self

Creates a percentage from a numeric value.

pub fn new(value: CSSFloat) -> Self

Creates a percentage from a numeric value.

pub fn zero() -> Self

0%

pub fn hundred() -> Self

100%

pub fn get(&self) -> CSSFloat

Gets the underlying value for this float.

pub fn to_number(&self) -> Number

Returns this percentage as a number.

pub fn calc_clamping_mode(&self) -> Option<AllowedNumericType>

Returns the calc() clamping mode for this percentage.

pub fn reverse(&mut self)

Reverses this percentage, preserving calc-ness.

For example: If it was 20%, convert it into 80%.

pub fn parse_with_clamping_mode<'i, 't>( context: &ParserContext<'_>, input: &mut Parser<'i, 't>, num_context: AllowedNumericType, ) -> Result<Self, ParseError<'i>>

Parses a specific kind of percentage.

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

Parses a percentage token, but rejects it if it’s negative.

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

Parses a percentage token, but rejects it if it’s negative or more than 100%.

pub fn clamp_to_hundred(self) -> Self

Clamp to 100% if the value is over 100%.

Trait Implementations

impl Clone for Percentage

fn clone(&self) -> Percentage

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Percentage

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

Formats the value using the given formatter.

impl Default for Percentage

fn default() -> Percentage

Returns the “default value” for a type.

impl From<Percentage> for LengthPercentage

fn from(pc: Percentage) -> Self

Converts to this type from the input type.

impl MallocSizeOf for Percentage

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 Parse for Percentage

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

Parse a value of this type.

impl PartialEq for Percentage

fn eq(&self, other: &Percentage) -> 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 SpecifiedValueInfo for Percentage

const SUPPORTED_TYPES: u8 = 0u8

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 ToComputedValue for Percentage

type ComputedValue = Percentage

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

fn to_computed_value(&self, _: &Context<'_>) -> Self::ComputedValue

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

fn from_computed_value(computed: &Self::ComputedValue) -> Self

Convert a computed value to specified value form.

impl ToCss for Percentage

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 ToPercentage for Percentage

fn is_calc(&self) -> bool

Returns whether this percentage used to be a calc().

fn to_percentage(&self) -> CSSFloat

Turns the percentage into a plain float.

impl ToShmem for Percentage

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

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

impl Copy for Percentage

impl StructuralPartialEq for Percentage