Struct WhenVarBuilder 

pub struct WhenVarBuilder<O: VarValue> { /* private fields */ }

Manual when_var! builder.

Implementations

impl<O: VarValue> WhenVarBuilder<O>

pub fn new(default: impl IntoVar<O>) -> Self

New with value variable used when no other conditions are true.

pub fn push( &mut self, condition: impl IntoVar<bool>, value: impl IntoVar<O>, ) -> &mut Self

Push a conditional value.

When the condition is true and all previous pushed conditions are false the when variable represents the value variable.

pub fn build(self) -> Var<O>

Build the when var.

pub fn as_any(&mut self) -> &mut AnyWhenVarBuilder

Reference the type erased when builder.

pub fn try_from_built(var: &Var<O>) -> Option<Self>

If the var was built by build clones the internal conditions, values and default variables into a new builder.

impl<O: VarValue + Transitionable> WhenVarBuilder<O>

pub fn build_easing( self, condition_easing: Vec<Option<(Duration, Arc<dyn Fn(EasingTime) -> EasingStep + Send + Sync>)>>, default_easing: (Duration, Arc<dyn Fn(EasingTime) -> EasingStep + Send + Sync>), ) -> Var<O>

Build a variable similar to Var::easing, but with different duration and easing functions for each condition.

The condition_easing must contain one entry for each when condition, entries can be None, the easing used is the first entry that corresponds to a true condition, or falls back to the default_easing.

Trait Implementations

impl<O: Clone + VarValue> Clone for WhenVarBuilder<O>

fn clone(&self) -> WhenVarBuilder<O>

Returns a duplicate of the value.

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

Performs copy-assignment from source.