Struct DragStart 

#[non_exhaustive]
pub struct DragStart<T> {
    pub payload: T,
    pub source: Option<ZoneId>,
    pub pointer: Point,
    pub grab: Point,
    pub effect: DropEffect,
    pub mode: DragMode,
    pub pointer_kind: PointerKind,
    pub source_rect: Option<Rect>,
}

Complete input for starting a drag with an explicit stable identity.

Construct this with DragStart::new and use the builder methods for optional metadata. The struct is non-exhaustive so future drag metadata can be added without breaking downstream callers.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

payload: T

source: Option<ZoneId>

pointer: Point

grab: Point

effect: DropEffect

mode: DragMode

pointer_kind: PointerKind

source_rect: Option<Rect>

Implementations

impl<T> DragStart<T>

pub fn new(payload: T, pointer: Point) -> Self

Create a pointer drag at pointer with default grab and move effect.

pub fn with_source(self, source: Option<ZoneId>) -> Self

pub fn with_grab(self, grab: Point) -> Self

pub fn with_effect(self, effect: DropEffect) -> Self

pub fn with_mode(self, mode: DragMode) -> Self

pub fn with_pointer_kind(self, pointer_kind: PointerKind) -> Self

pub fn with_source_rect(self, source_rect: Option<Rect>) -> Self

Trait Implementations

impl<T: Clone> Clone for DragStart<T>

fn clone(&self) -> DragStart<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for DragStart<T>

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

Formats the value using the given formatter.

impl<T: PartialEq> PartialEq for DragStart<T>

fn eq(&self, other: &DragStart<T>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<T: PartialEq> StructuralPartialEq for DragStart<T>