Enum ActivationConstraint 

#[non_exhaustive]
pub enum ActivationConstraint {
    Distance(f64),
    Delay {
        duration_ms: u32,
        tolerance: f64,
    },
    Either(Vec<ActivationConstraint>),
    Manual,
}

A condition that promotes a pointer press into a drag.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Distance(f64)

Promote after travelling this many CSS pixels.

Delay

Promote after a delay, provided movement stays inside tolerance.

Fields

duration_ms: u32

tolerance: f64

Either(Vec<ActivationConstraint>)

Promote when any contained constraint succeeds.

Manual

Never promote automatically. Custom code may start the drag through crate::core::DndContext.

Implementations

impl ActivationConstraint

pub fn distance(&self) -> Option<f64>

Smallest configured distance threshold, when one exists.

pub fn delay(&self) -> Option<(u32, f64)>

Shortest configured delay and its movement tolerance.

pub fn is_manual(&self) -> bool

Whether no built-in event may promote this policy.

pub fn exceeded_delay_tolerance(&self, dx: f64, dy: f64) -> bool

Whether a movement delta exceeded a delay constraint’s tolerance.

Trait Implementations

impl Clone for ActivationConstraint

fn clone(&self) -> ActivationConstraint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ActivationConstraint

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

Formats the value using the given formatter.

impl Default for ActivationConstraint

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for ActivationConstraint

fn eq(&self, other: &ActivationConstraint) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ActivationConstraint