Struct PenState 

#[repr(C)]
pub struct PenState {
    pub position: LogicalPosition,
    pub pressure: f32,
    pub tilt: PenTilt,
    pub in_contact: bool,
    pub is_eraser: bool,
    pub barrel_button_pressed: bool,
    pub device_id: u64,
    pub tangential_pressure: f32,
    pub barrel_roll_rad: f32,
    pub tool_id: u32,
}

State of pen/stylus input

Fields

position: LogicalPosition

Current pen position

pressure: f32

Current pressure (0.0 to 1.0)

tilt: PenTilt

Current tilt angles (x_tilt, y_tilt) in degrees

in_contact: bool

Whether pen is in contact with surface

is_eraser: bool

Whether pen is inverted (eraser mode)

barrel_button_pressed: bool

Whether barrel button is pressed

device_id: u64

Unique identifier for this pen device

tangential_pressure: f32

Tangential / cylinder pressure (0.0 to 1.0). Wacom Air Brush wheel, Surface Slim Pen 2 secondary axis. 0.0 means “not reported”. Maps to W3C PointerEvent.tangentialPressure.

barrel_roll_rad: f32

Barrel roll angle in radians (–π to π). Wacom Art Pen rotation, Surface Pen barrel-roll axis. 0.0 means “not reported” (devices that do report it sweep through the full range as the user rolls the pen — the resting state isn’t necessarily zero, so callers should compare deltas, not absolute values). Maps to W3C PointerEvent.twist (in radians, not degrees).

tool_id: u32

Per-tool identity for hand-held pens that report it (Wintab GUID, Apple Pencil session id, S-Pen serial). 0 means “not reported”. Distinct from device_id so callers can both identify the hardware (device_id) and which tip / lead / button cluster is in use (tool_id).

Trait Implementations

impl Clone for PenState

fn clone(&self) -> PenState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PenState

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

Formats the value using the given formatter.

impl Default for PenState

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for PenState

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for PenState

impl StructuralPartialEq for PenState