Struct AnyDrag 

pub struct AnyDrag {
    pub view: AnyView,
    pub value: Arc<dyn Any>,
    pub cursor_offset: Point<Pixels>,
    pub cursor_style: Option<CursorStyle>,
    pub external_payload_source: Option<ExternalDragPayloadSource>,
}

The state of a drag in progress, started by dragging an element in a window.

Set with App::start_drag. Read it with App::active_drag. It is cleared by App::stop_drag when the drop happens.

Fields

view: AnyView

The view that draws the dragged item under the cursor.

value: Arc<dyn Any>

The value that the drop target receives.

cursor_offset: Point<Pixels>

The offset from the cursor to the drag view, so the view stays under the same point it was grabbed.

cursor_style: Option<CursorStyle>

The cursor shown during the drag, or None for the default.

external_payload_source: Option<ExternalDragPayloadSource>

Resolves the payload to offer the platform if the drag leaves the window. Invoked at most once per drag gesture, at promotion time.

Implementations

impl AnyDrag

pub fn offset(self, value: Point<Pixels>) -> Self

Sets the cursor_offset field of this struct.

pub fn cursor_style(self, value: Option<CursorStyle>) -> Self

Sets the cursor_style field of this struct.

impl AnyDrag

pub fn new<T: 'static + Sized>(value: T, view: impl Into<AnyView>) -> Self

Creates a drag that carries value and draws view under the cursor.

pub fn external_payload( self, predicate: impl FnOnce(&mut Window, &mut App) -> Option<ExternalDragPayload> + 'static, ) -> Self

Sets AnyDrag::external_payload_source: the closure builds the payload if the drag leaves the window.

pub fn is_type<T: 'static>(&self) -> bool

Returns whether the dragged value has type T.