Struct gtk4::GestureClick
source · #[repr(transparent)]pub struct GestureClick { /* private fields */ }
Expand description
GestureClick
is a Gesture
implementation for clicks.
It is able to recognize multiple clicks on a nearby zone, which
can be listened for through the pressed
signal. Whenever time or distance between clicks exceed the GTK
defaults, stopped
is emitted, and the
click counter is reset.
Signals
pressed
Emitted whenever a button or touch press happens.
released
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
Emitted whenever any time/distance threshold has been exceeded.
unpaired-release
Emitted whenever the gesture receives a release event that had no previous corresponding press.
Due to implicit grabs, this can only happen on situations where input is grabbed elsewhere mid-press or the pressed widget voluntarily relinquishes its implicit grab.
Gesture
begin
Emitted when the gesture is recognized.
This means the number of touch sequences matches
n-points
.
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
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 in response to this signal.
end
Emitted when @gesture either stopped recognizing the event
sequences as something to be handled, 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
Emitted whenever a sequence state changes.
See GestureExt::set_sequence_state()
to know
more about the expectable sequence lifetimes.
update
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
, glib::ObjectExt
Implementations§
source§impl GestureClick
impl GestureClick
sourcepub fn new() -> GestureClick
pub fn new() -> GestureClick
Returns a newly created Gesture
that recognizes
single and multiple presses.
Returns
a newly created GestureClick
sourcepub fn builder() -> GestureClickBuilder
pub fn builder() -> GestureClickBuilder
Creates a new builder-pattern struct instance to construct GestureClick
objects.
This method returns an instance of GestureClickBuilder
which can be used to create GestureClick
objects.
sourcepub fn connect_pressed<F: Fn(&Self, i32, f64, f64) + 'static>(
&self,
f: F
) -> SignalHandlerId
pub fn connect_pressed<F: Fn(&Self, i32, f64, f64) + 'static>( &self, f: F ) -> SignalHandlerId
sourcepub fn connect_released<F: Fn(&Self, i32, f64, f64) + 'static>(
&self,
f: F
) -> SignalHandlerId
pub fn connect_released<F: Fn(&Self, i32, f64, f64) + 'static>( &self, f: F ) -> SignalHandlerId
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
sourcepub fn connect_stopped<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
pub fn connect_stopped<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
Emitted whenever any time/distance threshold has been exceeded.
sourcepub fn connect_unpaired_release<F: Fn(&Self, f64, f64, u32, Option<&EventSequence>) + 'static>(
&self,
f: F
) -> SignalHandlerId
pub fn connect_unpaired_release<F: Fn(&Self, f64, f64, u32, Option<&EventSequence>) + 'static>( &self, f: F ) -> SignalHandlerId
Emitted whenever the gesture receives a release event that had no previous corresponding press.
Due to implicit grabs, this can only happen on situations where input is grabbed elsewhere mid-press or the pressed widget voluntarily relinquishes its implicit grab.
x
X coordinate of the event
y
Y coordinate of the event
button
Button being released
sequence
Sequence being released
Trait Implementations§
source§impl Clone for GestureClick
impl Clone for GestureClick
source§impl Debug for GestureClick
impl Debug for GestureClick
source§impl Default for GestureClick
impl Default for GestureClick
source§impl Display for GestureClick
impl Display for GestureClick
source§impl HasParamSpec for GestureClick
impl HasParamSpec for GestureClick
type ParamSpec = ParamSpecObject
§type SetValue = GestureClick
type SetValue = GestureClick
type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, GestureClick>
fn param_spec_builder() -> Self::BuilderFn
source§impl Hash for GestureClick
impl Hash for GestureClick
source§impl Ord for GestureClick
impl Ord for GestureClick
source§impl ParentClassIs for GestureClick
impl ParentClassIs for GestureClick
type Parent = GestureSingle
source§impl<OT: ObjectType> PartialEq<OT> for GestureClick
impl<OT: ObjectType> PartialEq<OT> for GestureClick
source§impl<OT: ObjectType> PartialOrd<OT> for GestureClick
impl<OT: ObjectType> PartialOrd<OT> for GestureClick
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moresource§impl StaticType for GestureClick
impl StaticType for GestureClick
source§fn static_type() -> Type
fn static_type() -> Type
Self
.impl Eq for GestureClick
impl IsA<EventController> for GestureClick
impl IsA<Gesture> for GestureClick
impl IsA<GestureSingle> for GestureClick
Auto Trait Implementations§
impl RefUnwindSafe for GestureClick
impl !Send for GestureClick
impl !Sync for GestureClick
impl Unpin for GestureClick
impl UnwindSafe for GestureClick
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) -> SignalHandlerIdwhere
F: Fn(&T, &ParamSpec),
unsafe fn connect_notify_unsafe<F>( &self, name: Option<&str>, f: F ) -> SignalHandlerIdwhere F: Fn(&T, &ParamSpec),
notify
signal of the object. Read more