input_pipeline::touch_binding

Struct ContactDeviceDescriptor

pub struct ContactDeviceDescriptor {
    pub x_range: Range,
    pub y_range: Range,
    pub x_unit: Unit,
    pub y_unit: Unit,
    pub pressure_range: Option<Range>,
    pub width_range: Option<Range>,
    pub height_range: Option<Range>,
}

Expand description

A ContactDeviceDescriptor describes the possible values touch contact properties can take on.

This descriptor can be used, for example, to determine where on a screen a touch made contact.

§Example

// Determine the scaling factor between the display and the touch device's x range.
let scaling_factor =
    display_width / (contact_descriptor._x_range.end - contact_descriptor._x_range.start);
// Use the scaling factor to scale the contact report's x position.
let hit_location =
    scaling_factor * (contact_report.position_x - contact_descriptor._x_range.start);

Fields§

§x_range: Range

The range of possible x values for this touch contact.

§y_range: Range

The range of possible y values for this touch contact.

§x_unit: Unit

The unit of measure for x_range.

§y_unit: Unit

The unit of measure for y_range.

§pressure_range: Option<Range>

The range of possible pressure values for this touch contact.

§width_range: Option<Range>

The range of possible widths for this touch contact.

§height_range: Option<Range>

The range of possible heights for this touch contact.

Trait Implementations§

impl Clone for ContactDeviceDescriptor

fn clone(&self) -> ContactDeviceDescriptor

Returns a copy of the value. Read more

1.0.0 · Source§

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

Performs copy-assignment from source. Read more

impl Debug for ContactDeviceDescriptor

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

Formats the value using the given formatter. Read more

impl PartialEq for ContactDeviceDescriptor

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

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

1.0.0 · Source§

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 Eq for ContactDeviceDescriptor

impl StructuralPartialEq for ContactDeviceDescriptor

Auto Trait Implementations§

impl Freeze for ContactDeviceDescriptor

impl RefUnwindSafe for ContactDeviceDescriptor

impl Send for ContactDeviceDescriptor

impl Sync for ContactDeviceDescriptor

impl Unpin for ContactDeviceDescriptor

impl UnwindSafe for ContactDeviceDescriptor

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> AsRcAny for T
where T: Any,

fn as_rc_any(self: Rc<T>) -> Rc<dyn Any>

impl<T> Borrow<T> for T
where T: ?Sized,

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Immutably borrows from an owned value. Read more

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dst. Read more

impl<T> DynClone for T
where T: Clone,

fn __clone_box(&self, _: Private) -> *mut ()

impl<T, D> Encode<Ambiguous1, D> for T
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Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID. Read more

impl<T, D> Encode<Ambiguous2, D> for T
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. Read more

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impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> IntoAny for T
where T: 'static + Send + Sync,

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Cast the given object into a dyn std::any::Any.

impl<T> Pointable for T

const ALIGN: usize = _

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type Init = T

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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

impl<T> ToOwned for T
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type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

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Uses borrowed data to replace owned data, usually by cloning. Read more

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type Error = Infallible

The type returned in the event of a conversion error.

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Performs the conversion.

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Performs the conversion.

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