Struct DragState 

pub struct DragState { /* private fields */ }

The shared drag session, provided via context by provide_drag. Tracks the active payload, the pointer position, the hovered drop zone, and the registry of drop callbacks. Copy, so it can be captured in event handlers.

Implementations

impl DragState

pub fn active(&self) -> bool

Reactively reports whether a drag is currently in progress.

pub fn arm(&self, payload: DragPayload, x: f64, y: f64)

Arms a potential drag at a start position; it begins once the pointer moves past the threshold.

pub fn payload(&self) -> Option<DragPayload>

Reactively reads the payload of the active drag, if any.

pub fn position(&self) -> (f64, f64)

Reactively reads the current pointer position.

pub fn over(&self) -> Option<String>

Reactively reads the id of the drop zone currently under the pointer, if any.

pub fn start(&self, payload: DragPayload, x: f64, y: f64)

Begins an active drag at the given position with the given payload.

pub fn set_over(&self, id: String)

Marks the drop zone id as hovered while a drag is active.

pub fn clear_over(&self, id: &str)

Clears the hovered drop zone if it is currently id.

Trait Implementations

impl Clone for DragState

fn clone(&self) -> DragState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DragState