Struct CalcNumeric 

pub struct CalcNumeric {
    pub clamping_mode: AllowedNumericType,
    pub node: CalcNode,
}

A struct to hold a simplified calc expression and associated clamping mode.

In some cases, e.g. DOMMatrix, we support calc(), but reject all the relative lengths, and to_computed_pixel_length_without_context() handles this case. Therefore, if you want to add a new field, please make sure this function work properly.

Fields

clamping_mode: AllowedNumericType

node: CalcNode

Implementations

impl CalcNumeric

pub fn with_clamping_mode(&self, clamping_mode: AllowedNumericType) -> Self

Returns a new CalcNumeric with the same expression but the specified clamping mode

pub fn with_leaf_node(&self, leaf: Leaf) -> Self

Returns a new CalcNumeric with the same clamping mode but a different leaf node

pub fn resolve( &self, context: &Context<'_>, leaf_to_f32: impl FnOnce(Result<Leaf, ()>) -> f32, ) -> f32

Resolves this calc expression given a computed context, applying clamping.

pub fn as_number(&self) -> Option<NoCalcNumber>

Gets this calc expression as a number

pub fn as_percentage(&self) -> Option<NoCalcPercentage>

Gets this calc expression as a percentage

pub fn as_time(&self) -> Option<NoCalcTime>

Gets this calc expression as a time

pub fn as_resolution(&self) -> Option<NoCalcResolution>

Gets this calc expression as a resolution

pub fn as_angle(&self) -> Option<NoCalcAngle>

Gets this calc expression as an angle

Trait Implementations

impl Clone for CalcNumeric

fn clone(&self) -> CalcNumeric

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CalcNumeric

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

Formats the value using the given formatter.

impl MallocSizeOf for CalcNumeric

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 PartialEq for CalcNumeric

fn eq(&self, other: &CalcNumeric) -> 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 CalcNumeric

const SUPPORTED_TYPES: u8 = 0

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 ToCss for CalcNumeric

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.

fn to_css_cssstring(&self) -> String

Serialize self in CSS syntax and return a CssString.

impl ToShmem for CalcNumeric

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

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

impl ToTyped for CalcNumeric

where CalcNode: ToTyped,

fn to_typed(&self, dest: &mut ThinVec<TypedValue>) -> Result<(), ()>

Attempt to convert self into one or more TypedValue items.

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

Attempt to convert self into a TypedValue.

fn to_numeric_value(&self) -> Option<NumericValue>

Attempt to convert self into a NumericValue.

fn to_typed_value_list(&self) -> Option<TypedValueList>

Attempt to convert self into a TypedValueList.

impl StructuralPartialEq for CalcNumeric