Struct PointerSample

pub struct PointerSample {
    pub pointer_id: Option<u32>,
    pub phase: Option<EventPhase>,
    pub position_in_viewport: Option<[f32; 2]>,
    pub scroll_v: Option<i64>,
    pub scroll_h: Option<i64>,
    pub pressed_buttons: Option<Vec<u8>>,
    pub relative_motion: Option<[f32; 2]>,
    pub scroll_v_physical_pixel: Option<f64>,
    pub scroll_h_physical_pixel: Option<f64>,
    pub is_precision_scroll: Option<bool>,
    /* private fields */
}

A description of each sampled data point for a pointer device.

Fields

pointer_id: Option<u32>

An identifier of the pointer that issued this event. It is unique only to a specific pointer device.

phase: Option<EventPhase>

The state of this event in the pointer event stream’s state machine.

position_in_viewport: Option<[f32; 2]>

The position of this event, in the viewport’s coordinate system.

scroll_v: Option<i64>

Relative vertical scrolling displacement by detent.

scroll_h: Option<i64>

Relative horizontal scrolling displacement by detent.

pressed_buttons: Option<Vec<u8>>

Identifiers of currently pressed buttons.

relative_motion: Option<[f32; 2]>

The movement of a mouse, independent of the viewport’s coordinate system.

scroll_v_physical_pixel: Option<f64>

Recommended vertical scrolling displacement by physical pixel, it is computed with accelerator, detent / mm to pixel ratio, etc.

scroll_h_physical_pixel: Option<f64>

Recommended horizontal scrolling displacement by physical pixel, it is computed with accelerator, detent / mm to pixel ratio, etc.

is_precision_scroll: Option<bool>

Indicated if the scroll event is from a precision scroll device (HI_RES mouse or touchpad). Clients may want to play interpolation animations on non precision scroll device for smooth scrolling.

Trait Implementations

impl Clone for PointerSample

fn clone(&self) -> PointerSample

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PointerSample

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

Formats the value using the given formatter.

impl<D> Decode<PointerSample, D> for PointerSample

where D: ResourceDialect,

fn new_empty() -> PointerSample

Creates a valid instance of Self. The specific value does not matter, since it will be overwritten by decode.

unsafe fn decode( &mut self, decoder: &mut Decoder<'_, D>, offset: usize, depth: Depth, ) -> Result<(), Error>

Decodes an object of type T from the decoder’s buffers into self.

impl Default for PointerSample

fn default() -> PointerSample

Returns the “default value” for a type.

impl<D> Encode<PointerSample, D> for &PointerSample

where D: ResourceDialect,

unsafe fn encode( self, encoder: &mut Encoder<'_, D>, offset: usize, depth: Depth, ) -> Result<(), Error>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID.

impl PartialEq for PointerSample

fn eq(&self, other: &PointerSample) -> 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 TypeMarker for PointerSample

type Owned = PointerSample

The owned Rust type which this FIDL type decodes into.

fn inline_align(_context: Context) -> usize

Returns the minimum required alignment of the inline portion of the encoded object. It must be a (nonzero) power of two.

fn inline_size(_context: Context) -> usize

Returns the size of the inline portion of the encoded object, including padding for alignment. Must be a multiple of inline_align.

fn encode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and encoding requires no validation. When true, we can optimize encoding arrays and vectors of Self::Owned to a single memcpy.

fn decode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and decoding requires no validation. When true, we can optimize decoding arrays and vectors of Self::Owned to a single memcpy.

impl ValueTypeMarker for PointerSample

type Borrowed<'a> = &'a PointerSample

The Rust type to use for encoding. This is a particular Encode<Self> type cheaply obtainable from &Self::Owned. There are three cases:

fn borrow( value: &<PointerSample as TypeMarker>::Owned, ) -> <PointerSample as ValueTypeMarker>::Borrowed<'_>

Cheaply converts from &Self::Owned to Self::Borrowed.

impl Persistable for PointerSample

impl StructuralPartialEq for PointerSample