Struct DragSession 

pub struct DragSession {
    pub kind: DragKind,
    pub source: Option<DragSourceId>,
    pub press: Point,
    pub pointer: Point,
    pub ghost_offset: Vec2,
    pub hovered: Option<DragTargetId>,
    pub payload_type: Option<TypeId>,
    pub keyboard: bool,
}

A snapshot of an in-flight (Dragging/Dropping) session, minus the payload itself.

Fields

kind: DragKind

Where the session came from.

source: Option<DragSourceId>

The source that started it; None for DragKind::ExternalFiles.

press: Point

The point the source was pressed at (for an external session, the point the OS drag first entered at).

pointer: Point

The latest pointer position (DragCoordinator::update_pointer).

ghost_offset: Vec2

Offset from the pointer to the ghost’s origin (DragCoordinator::set_ghost_offset); zero until a source sets it.

hovered: Option<DragTargetId>

The target currently under the pointer, if any. While Dropping it is the drop target.

payload_type: Option<TypeId>

The payload’s type, while the payload is still held — None once a target has moved it out with DragCoordinator::take_payload.

keyboard: bool

Whether this session was begun by DragCoordinator::lift rather than DragCoordinator::begin/DragCoordinator::begin_external — a keyboard session, with no pointer driving it. DragCoordinator::update_pointer/DragCoordinator::resolve_hover no-op for one; hover instead advances only through DragCoordinator::move_to_next_target/ DragCoordinator::move_to_previous_target (see the module docs).

Implementations

impl DragSession

pub fn ghost_origin(&self) -> Point

Where the ghost’s origin sits: the pointer plus the ghost offset.

Trait Implementations

impl Clone for DragSession

fn clone(&self) -> DragSession

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DragSession

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

Formats the value using the given formatter.

impl PartialEq for DragSession

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DragSession