Struct DynamicCssProperty

pub struct DynamicCssProperty {
    pub dynamic_id: String,
    pub default_value: CssProperty,
}

A DynamicCssProperty is a type of css property that can be changed on possibly every frame by the Rust code - for example to implement an On::Hover behaviour.

The syntax for such a property looks like this:

#my_div {
   padding: var(--my_dynamic_property_id, 400px);
}

Azul will register a dynamic property with the key “my_dynamic_property_id” and the default value of 400px. If the property gets overridden during one frame, the overridden property takes precedence.

At runtime the style is immutable (which is a performance optimization - if we can assume that the property never changes at runtime), we can do some optimizations on it. Dynamic style properties can also be used for animations and conditional styles (i.e. hover, focus, etc.), thereby leading to cleaner code, since all of these special cases now use one single API.

Fields

dynamic_id: String

The stringified ID of this property, i.e. the "my_id" in width: var(--my_id, 500px).

default_value: CssProperty

Default values for this properties - one single value can control multiple properties!

Implementations

impl DynamicCssProperty

pub fn is_inheritable(&self) -> bool

pub fn can_trigger_relayout(&self) -> bool

Trait Implementations

impl Clone for DynamicCssProperty

fn clone(&self) -> DynamicCssProperty

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DynamicCssProperty

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

Formats the value using the given formatter.

impl Hash for DynamicCssProperty

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for DynamicCssProperty

fn cmp(&self, other: &DynamicCssProperty) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for DynamicCssProperty

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

fn partial_cmp(&self, other: &DynamicCssProperty) -> 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 Eq for DynamicCssProperty

impl StructuralPartialEq for DynamicCssProperty