Enum PixelValueOrSystem 

#[repr(C, u8)]
pub enum PixelValueOrSystem {
    Value(PixelValue),
    System(SystemMetricRef),
}

A pixel value reference that can be either a concrete value or a system metric. System metrics are lazily evaluated at runtime based on the user’s system theme.

CSS syntax: 10px, 1.5em, system:button-padding, etc.

Variants

Value(PixelValue)

A concrete pixel value.

System(SystemMetricRef)

A reference to a system metric, resolved at runtime.

Implementations

impl PixelValueOrSystem

pub const fn value(v: PixelValue) -> Self

Create a new PixelValueOrSystem from a concrete value.

pub const fn system(s: SystemMetricRef) -> Self

Create a new PixelValueOrSystem from a system metric reference.

pub fn resolve( &self, system_metrics: &SystemMetrics, fallback: PixelValue, ) -> PixelValue

Resolve the pixel value against a SystemMetrics struct. Returns the system metric if available, or falls back to the provided default.

pub fn to_pixel_value_with_fallback(&self, fallback: PixelValue) -> PixelValue

Returns the concrete value if available, or a default fallback for system metrics.

pub fn to_pixel_value_default(&self) -> PixelValue

Returns the concrete value if available, or zero for system metrics.

Trait Implementations

impl Clone for PixelValueOrSystem

fn clone(&self) -> PixelValueOrSystem

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PixelValueOrSystem

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

Formats the value using the given formatter.

impl Default for PixelValueOrSystem

fn default() -> Self

Returns the “default value” for a type.

impl Display for PixelValueOrSystem

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

Formats the value using the given formatter.

impl FormatAsCssValue for PixelValueOrSystem

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

impl From<PixelValue> for PixelValueOrSystem

fn from(value: PixelValue) -> Self

Converts to this type from the input type.

impl PartialEq for PixelValueOrSystem

fn eq(&self, other: &PixelValueOrSystem) -> 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 PartialOrd for PixelValueOrSystem

fn partial_cmp(&self, other: &PixelValueOrSystem) -> 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 Copy for PixelValueOrSystem

impl StructuralPartialEq for PixelValueOrSystem