Struct TouchEvent 

pub struct TouchEvent {
    pub id: TouchId,
    pub phase: TouchPhase,
    pub position: Point<Pixels>,
    pub predicted_position: Option<Point<Pixels>>,
    pub force: Option<f32>,
}

A raw touch sample from a touch screen, before gesture recognition.

GPUI does not deliver raw touches to element listeners. The gesture recognizer reads them and reports what they mean: a tap becomes a synthesized left mouse down and up, a pan becomes ScrollWheelEvents, a held touch becomes LongPressEvent, and a drag claimed by an element becomes TouchDragEvent. See the mouse and touch guide.

Fields

id: TouchId

The touch this sample belongs to.

phase: TouchPhase

Whether the touch started, moved, ended or was cancelled.

position: Point<Pixels>

The touch position in window coordinates, in logical pixels.

predicted_position: Option<Point<Pixels>>

The position the platform predicts the touch will reach about one frame later, in the same coordinates as position. Only set for TouchPhase::Moved samples, and only when the platform can predict.

This is latency compensation. It can change how far a pan scrolls within a frame. It never affects hit testing, gesture classification or velocity, and later samples correct any error it introduces.

force: Option<f32>

The normalized touch force from 0.0 to 1.0, if the hardware reports it.

Trait Implementations

impl Clone for TouchEvent

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TouchEvent

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

Formats the value using the given formatter.

impl Default for TouchEvent

fn default() -> Self

Returns the “default value” for a type.

impl InputEvent for TouchEvent

fn to_platform_input(self) -> PlatformInput

Converts this event into the PlatformInput variant that wraps it.