bevy/crates/bevy_input/src/touchpad.rs

use bevy_ecs::event::Event;
use bevy_reflect::{FromReflect, Reflect, ReflectFromReflect};

#[cfg(feature = "serialize")]
use bevy_reflect::{ReflectDeserialize, ReflectSerialize};

/// Touchpad magnification event with two-finger pinch gesture.
///
/// Positive delta values indicate magnification (zooming in) and
/// negative delta values indicate shrinking (zooming out).
///
/// ## Platform-specific
///
/// - Only available on **`macOS`**.
#[derive(Event, Debug, Clone, Copy, PartialEq, Reflect, FromReflect)]
#[reflect(Debug, PartialEq, FromReflect)]
#[cfg_attr(
    feature = "serialize",
    derive(serde::Serialize, serde::Deserialize),
    reflect(Serialize, Deserialize)
)]
pub struct TouchpadMagnify(pub f32);

/// Touchpad rotation event with two-finger rotation gesture.
///
/// Positive delta values indicate rotation counterclockwise and
/// negative delta values indicate rotation clockwise.
///
/// ## Platform-specific
///
/// - Only available on **`macOS`**.
#[derive(Event, Debug, Clone, Copy, PartialEq, Reflect, FromReflect)]
#[reflect(Debug, PartialEq, FromReflect)]
#[cfg_attr(
    feature = "serialize",
    derive(serde::Serialize, serde::Deserialize),
    reflect(Serialize, Deserialize)
)]
pub struct TouchpadRotate(pub f32);