Enum PointerEventKind 

pub enum PointerEventKind {
    Down,
    Move,
    Up,
    ButtonDown(PointerButton),
    ButtonUp(PointerButton),
    Cancel,
    Scroll,
    Zoom,
    RotaryScrollPre,
    RotaryScroll,
    Enter,
    Exit,
}

What a pointer event reports.

Variants

Down

A pointer went down: the primary mouse button, a finger or a pen touched. Other mouse buttons arrive as ButtonDown.

Move

A pointer moved.

Up

A pointer went up: the primary mouse button, a finger or a pen lifted.

ButtonDown(PointerButton)

A mouse button other than the primary one went down: the right, the middle or a side button. A click, a drag or a scroll starts only from Down; a handler that takes another button, such as one that opens a menu or turns a camera, matches this. The nodes under the pointer receive it, or, while another button is down, the nodes that took that button’s press. Those nodes receive the moves until the last button goes up, with the buttons held in PointerEvent::buttons.

ButtonUp(PointerButton)

A mouse button other than the primary one went up; see ButtonDown.

Cancel

The system canceled the gesture of the pointer.

Scroll

A wheel or trackpad scroll. The delta is in PointerEvent::scroll_delta.

Zoom

Discrete zoom step (desktop ctrl+wheel, browser pinch-trackpad). The multiplicative factor is carried in PointerEvent::zoom_delta.

RotaryScrollPre

Rotary scroll (Wear OS crown / rotating bezel) during the capture pass, which runs root-to-focused so ancestors can intercept the event before the focused node sees it.

The scroll amounts are carried in PointerEvent::scroll_delta (y = vertical pixels, x = horizontal pixels) and the rotary uptime in PointerEvent::time_ms; use PointerEvent::rotary_scroll_event to read them back as a RotaryScrollEvent. Mirrors Compose’s onPreRotaryScrollEvent.

RotaryScroll

Rotary scroll during the bubble pass, which runs focused-to-root. Mirrors Compose’s onRotaryScrollEvent.

Enter

A pointer began to hover over the receiving node.

Exit

A pointer stopped hovering over the receiving node.

Implementations

impl PointerEventKind

pub fn is_rotary(self) -> bool

Returns true for the two rotary passes.

Trait Implementations

impl Clone for PointerEventKind

fn clone(&self) -> PointerEventKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PointerEventKind

impl Debug for PointerEventKind

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

Formats the value using the given formatter.

impl Eq for PointerEventKind

impl PartialEq for PointerEventKind

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PointerEventKind