Struct GestureStylus 

pub struct GestureStylus { /* private fields */ }

Available on crate feature v3_24 only.

GestureStylus is a Gesture implementation specific to stylus input. The provided signals just provide the basic information

Signals

down

motion

proximity

up

Gesture

begin

This signal is emitted when the gesture is recognized. This means the number of touch sequences matches n-points, and the check handler(s) returned true.

Note: These conditions may also happen when an extra touch (eg. a third touch on a 2-touches gesture) is lifted, in that situation sequence won’t pertain to the current set of active touches, so don’t rely on this being true.

cancel

This signal is emitted whenever a sequence is cancelled. This usually happens on active touches when EventControllerExt::reset() is called on gesture (manually, due to grabs…), or the individual sequence was claimed by parent widgets’ controllers (see GestureExt::set_sequence_state()).

gesture must forget everything about sequence as a reaction to this signal.

end

This signal is emitted when gesture either stopped recognizing the event sequences as something to be handled (the check handler returned false), or the number of touch sequences became higher or lower than n-points.

Note: sequence might not pertain to the group of sequences that were previously triggering recognition on gesture (ie. a just pressed touch sequence that exceeds n-points). This situation may be detected by checking through GestureExt::handles_sequence().

sequence-state-changed

This signal is emitted whenever a sequence state changes. See GestureExt::set_sequence_state() to know more about the expectable sequence lifetimes.

update

This signal is emitted whenever an event is handled while the gesture is recognized. sequence is guaranteed to pertain to the set of active touches.

Implements

GestureSingleExt, GestureExt, EventControllerExt, [trait@glib::ObjectExt], GestureStylusExtManual

GLib type: GObject with reference counted clone semantics.

Implementations

impl GestureStylus

pub fn new(widget: &impl IsA<Widget>) -> GestureStylus

Creates a new GestureStylus.

widget

a Widget

Returns

a newly created stylus gesture

pub fn axis(&self, axis: AxisUse) -> Option<f64>

Returns the current value for the requested axis. This function must be called from either the down, motion, up or proximity signals.

axis

requested device axis

Returns

true if there is a current value for the axis

value

return location for the axis value

pub fn device_tool(&self) -> Option<DeviceTool>

Returns the gdk::DeviceTool currently driving input through this gesture. This function must be called from either the down, motion, up or proximity signal handlers.

Returns

The current stylus tool

pub fn connect_down<F: Fn(&Self, f64, f64) + 'static>( &self, f: F, ) -> SignalHandlerId

pub fn connect_motion<F: Fn(&Self, f64, f64) + 'static>( &self, f: F, ) -> SignalHandlerId

pub fn connect_proximity<F: Fn(&Self, f64, f64) + 'static>( &self, f: F, ) -> SignalHandlerId

pub fn connect_up<F: Fn(&Self, f64, f64) + 'static>( &self, f: F, ) -> SignalHandlerId

Trait Implementations

impl Clone for GestureStylus

fn clone(&self) -> Self

Makes a clone of this shared reference.

This increments the strong reference count of the object. Dropping the object will decrement it again.

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

Performs copy-assignment from source.

impl Debug for GestureStylus

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

Formats the value using the given formatter.

impl Eq for GestureStylus

impl HasParamSpec for GestureStylus

type ParamSpec = ParamSpecObject

type SetValue = GestureStylus

Preferred value to be used as setter for the associated ParamSpec.

type BuilderFn = fn(&str) -> ParamSpecObjectBuilder<'_, GestureStylus>

fn param_spec_builder() -> Self::BuilderFn

impl Hash for GestureStylus

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Hashes the memory address of this object.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl IsA<EventController> for GestureStylus

impl IsA<Gesture> for GestureStylus

impl IsA<GestureSingle> for GestureStylus

impl Ord for GestureStylus

fn cmp(&self, other: &Self) -> Ordering

Comparison for two GObjects.

Compares the memory addresses of the provided objects.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl ParentClassIs for GestureStylus

type Parent = GestureSingle

impl<OT: ObjectType> PartialEq<OT> for GestureStylus

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

Equality for two GObjects.

Two GObjects are equal if their memory addresses are equal.

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

Inequality operator !=.

impl<OT: ObjectType> PartialOrd<OT> for GestureStylus

fn partial_cmp(&self, other: &OT) -> Option<Ordering>

Partial comparison for two GObjects.

Compares the memory addresses of the provided objects.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StaticType for GestureStylus

fn static_type() -> Type

Returns the type identifier of Self.