pub(crate) struct TouchState {
    device_id: TouchDeviceId,
    active_touches: BTreeMap<TouchId, ActiveTouch>,
    gesture_state: Option<GestureState>,
}
Expand description

The current state (for a specific touch device) of touch events and gestures.

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§device_id: TouchDeviceId

Technical identifier of the touch device. This is used to identify relevant touch events for this TouchState instance.

§active_touches: BTreeMap<TouchId, ActiveTouch>

Active touches, if any.

TouchId is the unique identifier of the touch. It is valid as long as the finger/pen touches the surface. The next touch will receive a new unique ID.

Refer to ActiveTouch.

§gesture_state: Option<GestureState>

If a gesture has been recognized (i.e. when exactly two fingers touch the surface), this holds state information

Implementations§

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impl TouchState

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pub fn new(device_id: TouchDeviceId) -> Self

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pub fn begin_frame( &mut self, time: f64, new: &RawInput, pointer_pos: Option<Pos2> )

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pub fn any_touches(&self) -> bool

Are there currently any fingers touching the surface?

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pub fn info(&self) -> Option<MultiTouchInfo>

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fn update_gesture(&mut self, time: f64, pointer_pos: Option<Pos2>)

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fn calc_dynamic_state(&self) -> Option<DynGestureState>

None if less than two fingers

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impl TouchState

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pub fn ui(&self, ui: &mut Ui)

Trait Implementations§

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impl Clone for TouchState

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fn clone(&self) -> TouchState

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for TouchState

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

Formats the value using the given formatter. Read more

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

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

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fn into(self) -> U

Calls U::from(self).

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

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

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> SerializableAny for T
where T: 'static + Any + Clone + for<'a> Send + Sync,