Struct GestureMultiPress 

pub struct GestureMultiPress { /* private fields */ }

1 touch/button press through set_area(), so any click happening outside that area is considered to be a first click of its own.

Signals

pressed

This signal is emitted whenever a button or touch press happens.

released

This signal is emitted when a button or touch is released. n_press will report the number of press that is paired to this event, note that stopped may have been emitted between the press and its release, n_press will only start over at the next press.

stopped

This signal is emitted whenever any time/distance threshold has been exceeded.

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]

GLib type: GObject with reference counted clone semantics.

Implementations

impl GestureMultiPress

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

Returns a newly created Gesture that recognizes single and multiple presses.

widget

a Widget

Returns

a newly created GestureMultiPress

pub fn builder() -> GestureMultiPressBuilder

Creates a new builder-pattern struct instance to construct GestureMultiPress objects.

This method returns an instance of GestureMultiPressBuilder which can be used to create GestureMultiPress objects.

pub fn area(&self) -> Option<Rectangle>

If an area was set through set_area(), this function will return true and fill in rect with the press area. See set_area() for more details on what the press area represents.

Returns

true if rect was filled with the press area

rect

return location for the press area

pub fn set_area(&self, rect: Option<&Rectangle>)

If rect is non-None, the press area will be checked to be confined within the rectangle, otherwise the button count will be reset so the press is seen as being the first one. If rect is None, the area will be reset to an unrestricted state.

Note: The rectangle is only used to determine whether any non-first click falls within the expected area. This is not akin to an input shape.

rect

rectangle to receive coordinates on

pub fn connect_pressed<F: Fn(&Self, i32, f64, f64) + 'static>( &self, f: F, ) -> SignalHandlerId

This signal is emitted whenever a button or touch press happens.

n_press

how many touch/button presses happened with this one

x

The X coordinate, in widget allocation coordinates

y

The Y coordinate, in widget allocation coordinates

pub fn connect_released<F: Fn(&Self, i32, f64, f64) + 'static>( &self, f: F, ) -> SignalHandlerId

This signal is emitted when a button or touch is released. n_press will report the number of press that is paired to this event, note that stopped may have been emitted between the press and its release, n_press will only start over at the next press.

n_press

number of press that is paired with this release

x

The X coordinate, in widget allocation coordinates

y

The Y coordinate, in widget allocation coordinates

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

This signal is emitted whenever any time/distance threshold has been exceeded.

Trait Implementations

impl Clone for GestureMultiPress

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 GestureMultiPress

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

Formats the value using the given formatter.

impl Default for GestureMultiPress

fn default() -> Self

Returns the “default value” for a type.

impl Eq for GestureMultiPress

impl HasParamSpec for GestureMultiPress

type ParamSpec = ParamSpecObject

type SetValue = GestureMultiPress

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

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

fn param_spec_builder() -> Self::BuilderFn

impl Hash for GestureMultiPress

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 GestureMultiPress

impl IsA<Gesture> for GestureMultiPress

impl IsA<GestureSingle> for GestureMultiPress

impl Ord for GestureMultiPress

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 GestureMultiPress

type Parent = GestureSingle

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

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 GestureMultiPress

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 GestureMultiPress

fn static_type() -> Type

Returns the type identifier of Self.