Module pointer 

Pointer event types

This module contains the core types for representing pointer input across mice, pens, and touch. These types are transport-agnostic and can be produced from platform backends (e.g. winit, web) and consumed in UI code.

Key ideas:

• PointerId and PersistentDeviceId help correlate states over time.
• PointerState carries position, pressure, tilt, modifiers and more.
• PointerEvent is the main event enum: down/up/move/enter/leave/scroll/gesture.
• PointerInfo::is_primary_pointer is a convenience for primary interactions.

Example: checking for primary pointer and using logical coordinates

use ui_events::pointer::{PointerEvent, PointerUpdate};

fn handle(ev: PointerEvent) {
    if let PointerEvent::Move(PointerUpdate { pointer, current, .. }) = ev {
        if pointer.is_primary_pointer() {
            let lp = current.logical_position();
            let _ = (lp.x, lp.y);
        }
    }
}

Structs

PersistentDeviceId

An identifier for the pointing device that is stable across the session.

PointerButtonEvent

An event representing a PointerButton that was pressed or released.

PointerButtons

A set of PointerButtons.

PointerGestureEvent

An event representing a gesture

PointerId

A unique identifier for the pointer.

PointerInfo

Identifying information about a pointer, stable across states.

PointerOrientation

Orientation of a pointer.

PointerScrollEvent

An event representing a scroll

PointerState

A single pointer state.

PointerUpdate

A pointer update, along with coalesced and predicted states.

Enums

PointerButton

Describes a button of a pointer input device, such as a mouse or stylus pen.

PointerEvent

A standard PointerEvent.

PointerGesture

A touchpad gesture for pointer.

PointerType

The type of device that has generated a pointer event.

Type Aliases

ContactGeometry

The size of an input, usually touch.