Struct gtk4::GestureLongPress
source · #[repr(transparent)]pub struct GestureLongPress { /* private fields */ }
Expand description
GestureLongPress
is a Gesture
for long presses.
This gesture is also known as “Press and Hold”.
When the timeout is exceeded, the gesture is triggering the
pressed
signal.
If the touchpoint is lifted before the timeout passes, or if
it drifts too far of the initial press point, the
cancelled
signal will be emitted.
How long the timeout is before the ::pressed signal gets emitted is
determined by the gtk-long-press-time
setting.
It can be modified by the delay-factor
property.
Properties
delay-factor
Factor by which to modify the default timeout.
Readable | Writeable
GestureSingle
button
Mouse button number to listen to, or 0 to listen for any button.
Readable | Writeable
exclusive
Whether the gesture is exclusive.
Exclusive gestures only listen to pointer and pointer emulated events.
Readable | Writeable
touch-only
Whether the gesture handles only touch events.
Readable | Writeable
Gesture
n-points
The number of touch points that trigger recognition on this gesture.
Readable | Writeable | Construct Only
EventController
name
The name for this controller, typically used for debugging purposes.
Readable | Writeable
propagation-limit
The limit for which events this controller will handle.
Readable | Writeable
propagation-phase
The propagation phase at which this controller will handle events.
Readable | Writeable
widget
The widget receiving the GdkEvents
that the controller will handle.
Readable
Signals
cancelled
Emitted whenever a press moved too far, or was released
before pressed
happened.
pressed
Emitted whenever a press goes unmoved/unreleased longer than what the GTK defaults tell.
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 GestureLongPress
impl GestureLongPress
sourcepub fn new() -> GestureLongPress
pub fn new() -> GestureLongPress
Returns a newly created Gesture
that recognizes long presses.
Returns
a newly created GestureLongPress
.
sourcepub fn builder() -> GestureLongPressBuilder
pub fn builder() -> GestureLongPressBuilder
Creates a new builder-pattern struct instance to construct GestureLongPress
objects.
This method returns an instance of GestureLongPressBuilder
which can be used to create GestureLongPress
objects.
sourcepub fn delay_factor(&self) -> f64
pub fn delay_factor(&self) -> f64
sourcepub fn set_delay_factor(&self, delay_factor: f64)
pub fn set_delay_factor(&self, delay_factor: f64)
Applies the given delay factor.
The default long press time will be multiplied by this value. Valid values are in the range [0.5..2.0].
delay_factor
The delay factor to apply
sourcepub fn connect_cancelled<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
pub fn connect_cancelled<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
Emitted whenever a press moved too far, or was released
before pressed
happened.
sourcepub fn connect_pressed<F: Fn(&Self, f64, f64) + 'static>(
&self,
f: F
) -> SignalHandlerId
pub fn connect_pressed<F: Fn(&Self, f64, f64) + 'static>( &self, f: F ) -> SignalHandlerId
pub fn connect_delay_factor_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId
Trait Implementations§
source§impl Clone for GestureLongPress
impl Clone for GestureLongPress
source§impl Debug for GestureLongPress
impl Debug for GestureLongPress
source§impl Default for GestureLongPress
impl Default for GestureLongPress
source§impl Display for GestureLongPress
impl Display for GestureLongPress
source§impl HasParamSpec for GestureLongPress
impl HasParamSpec for GestureLongPress
type ParamSpec = ParamSpecObject
§type SetValue = GestureLongPress
type SetValue = GestureLongPress
type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, GestureLongPress>
fn param_spec_builder() -> Self::BuilderFn
source§impl Hash for GestureLongPress
impl Hash for GestureLongPress
source§impl Ord for GestureLongPress
impl Ord for GestureLongPress
source§impl ParentClassIs for GestureLongPress
impl ParentClassIs for GestureLongPress
type Parent = GestureSingle
source§impl<OT: ObjectType> PartialEq<OT> for GestureLongPress
impl<OT: ObjectType> PartialEq<OT> for GestureLongPress
source§impl<OT: ObjectType> PartialOrd<OT> for GestureLongPress
impl<OT: ObjectType> PartialOrd<OT> for GestureLongPress
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 GestureLongPress
impl StaticType for GestureLongPress
source§fn static_type() -> Type
fn static_type() -> Type
Self
.impl Eq for GestureLongPress
impl IsA<EventController> for GestureLongPress
impl IsA<Gesture> for GestureLongPress
impl IsA<GestureSingle> for GestureLongPress
Auto Trait Implementations§
impl RefUnwindSafe for GestureLongPress
impl !Send for GestureLongPress
impl !Sync for GestureLongPress
impl Unpin for GestureLongPress
impl UnwindSafe for GestureLongPress
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name: Option<&str>,
f: F
) -> 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