pub struct GestureSwipe { /* private fields */ }
Expand description
GestureSwipe
is a Gesture
for swipe gestures.
After a press/move/…/move/release sequence happens, the
swipe
signal will be emitted,
providing the velocity and directionality of the sequence
at the time it was lifted.
If the velocity is desired in intermediate points,
velocity()
can be called in a
update
handler.
All velocities are reported in pixels/sec units.
§Signals
§swipe
Emitted when the recognized gesture is finished.
Velocity and direction are a product of previously recorded events.
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
, [trait@glib::ObjectExt
]
GLib type: GObject with reference counted clone semantics.
Implementations§
source§impl GestureSwipe
impl GestureSwipe
sourcepub fn new() -> GestureSwipe
pub fn new() -> GestureSwipe
sourcepub fn builder() -> GestureSwipeBuilder
pub fn builder() -> GestureSwipeBuilder
Creates a new builder-pattern struct instance to construct GestureSwipe
objects.
This method returns an instance of GestureSwipeBuilder
which can be used to create GestureSwipe
objects.
sourcepub fn velocity(&self) -> Option<(f64, f64)>
pub fn velocity(&self) -> Option<(f64, f64)>
Gets the current velocity.
If the gesture is recognized, this function returns true
and fills
in @velocity_x and @velocity_y with the recorded velocity, as per the
last events processed.
§Returns
whether velocity could be calculated
§velocity_x
return value for the velocity in the X axis, in pixels/sec
§velocity_y
return value for the velocity in the Y axis, in pixels/sec
sourcepub fn connect_swipe<F: Fn(&Self, f64, f64) + 'static>(
&self,
f: F,
) -> SignalHandlerId
pub fn connect_swipe<F: Fn(&Self, f64, f64) + 'static>( &self, f: F, ) -> SignalHandlerId
Trait Implementations§
source§impl Clone for GestureSwipe
impl Clone for GestureSwipe
source§impl Debug for GestureSwipe
impl Debug for GestureSwipe
source§impl Default for GestureSwipe
impl Default for GestureSwipe
source§impl HasParamSpec for GestureSwipe
impl HasParamSpec for GestureSwipe
type ParamSpec = ParamSpecObject
source§type SetValue = GestureSwipe
type SetValue = GestureSwipe
type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, GestureSwipe>
fn param_spec_builder() -> Self::BuilderFn
source§impl Hash for GestureSwipe
impl Hash for GestureSwipe
source§impl Ord for GestureSwipe
impl Ord for GestureSwipe
source§fn cmp(&self, other: &Self) -> Ordering
fn cmp(&self, other: &Self) -> Ordering
Comparison for two GObjects.
Compares the memory addresses of the provided objects.
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl ParentClassIs for GestureSwipe
impl ParentClassIs for GestureSwipe
type Parent = GestureSingle
source§impl<OT: ObjectType> PartialEq<OT> for GestureSwipe
impl<OT: ObjectType> PartialEq<OT> for GestureSwipe
source§impl<OT: ObjectType> PartialOrd<OT> for GestureSwipe
impl<OT: ObjectType> PartialOrd<OT> for GestureSwipe
source§impl StaticType for GestureSwipe
impl StaticType for GestureSwipe
source§fn static_type() -> Type
fn static_type() -> Type
Self
.impl Eq for GestureSwipe
impl IsA<EventController> for GestureSwipe
impl IsA<Gesture> for GestureSwipe
impl IsA<GestureSingle> for GestureSwipe
Auto Trait Implementations§
impl Freeze for GestureSwipe
impl RefUnwindSafe for GestureSwipe
impl !Send for GestureSwipe
impl !Sync for GestureSwipe
impl Unpin for GestureSwipe
impl UnwindSafe for GestureSwipe
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fn unblock_signal(&self, handler_id: &SignalHandlerId)
source§fn stop_signal_emission(&self, signal_id: SignalId, detail: Option<Quark>)
fn stop_signal_emission(&self, signal_id: SignalId, detail: Option<Quark>)
source§fn stop_signal_emission_by_name(&self, signal_name: &str)
fn stop_signal_emission_by_name(&self, signal_name: &str)
source§fn connect<F>(
&self,
signal_name: &str,
after: bool,
callback: F,
) -> SignalHandlerId
fn connect<F>( &self, signal_name: &str, after: bool, callback: F, ) -> SignalHandlerId
signal_name
on this object. Read moresource§fn connect_id<F>(
&self,
signal_id: SignalId,
details: Option<Quark>,
after: bool,
callback: F,
) -> SignalHandlerId
fn connect_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F, ) -> SignalHandlerId
signal_id
on this object. Read moresource§fn connect_local<F>(
&self,
signal_name: &str,
after: bool,
callback: F,
) -> SignalHandlerId
fn connect_local<F>( &self, signal_name: &str, after: bool, callback: F, ) -> SignalHandlerId
signal_name
on this object. Read moresource§fn connect_local_id<F>(
&self,
signal_id: SignalId,
details: Option<Quark>,
after: bool,
callback: F,
) -> SignalHandlerId
fn connect_local_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F, ) -> SignalHandlerId
signal_id
on this object. Read moresource§unsafe fn connect_unsafe<F>(
&self,
signal_name: &str,
after: bool,
callback: F,
) -> SignalHandlerId
unsafe fn connect_unsafe<F>( &self, signal_name: &str, after: bool, callback: F, ) -> SignalHandlerId
signal_name
on this object. Read moresource§unsafe fn connect_unsafe_id<F>(
&self,
signal_id: SignalId,
details: Option<Quark>,
after: bool,
callback: F,
) -> SignalHandlerId
unsafe fn connect_unsafe_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F, ) -> SignalHandlerId
signal_id
on this object. Read moresource§fn connect_closure(
&self,
signal_name: &str,
after: bool,
closure: RustClosure,
) -> SignalHandlerId
fn connect_closure( &self, signal_name: &str, after: bool, closure: RustClosure, ) -> SignalHandlerId
signal_name
on this object. Read moresource§fn connect_closure_id(
&self,
signal_id: SignalId,
details: Option<Quark>,
after: bool,
closure: RustClosure,
) -> SignalHandlerId
fn connect_closure_id( &self, signal_id: SignalId, details: Option<Quark>, after: bool, closure: RustClosure, ) -> SignalHandlerId
signal_id
on this object. Read moresource§fn watch_closure(&self, closure: &impl AsRef<Closure>)
fn watch_closure(&self, closure: &impl AsRef<Closure>)
closure
to the lifetime of the object. When
the object’s reference count drops to zero, the closure will be
invalidated. An invalidated closure will ignore any calls to
invoke_with_values
, or
invoke
when using Rust closures.source§fn emit<R>(&self, signal_id: SignalId, args: &[&dyn ToValue]) -> Rwhere
R: TryFromClosureReturnValue,
fn emit<R>(&self, signal_id: SignalId, args: &[&dyn ToValue]) -> Rwhere
R: TryFromClosureReturnValue,
source§fn emit_with_values(&self, signal_id: SignalId, args: &[Value]) -> Option<Value>
fn emit_with_values(&self, signal_id: SignalId, args: &[Value]) -> Option<Value>
Self::emit
but takes Value
for the arguments.source§fn emit_by_name<R>(&self, signal_name: &str, args: &[&dyn ToValue]) -> Rwhere
R: TryFromClosureReturnValue,
fn emit_by_name<R>(&self, signal_name: &str, args: &[&dyn ToValue]) -> Rwhere
R: TryFromClosureReturnValue,
source§fn emit_by_name_with_values(
&self,
signal_name: &str,
args: &[Value],
) -> Option<Value>
fn emit_by_name_with_values( &self, signal_name: &str, args: &[Value], ) -> Option<Value>
source§fn emit_by_name_with_details<R>(
&self,
signal_name: &str,
details: Quark,
args: &[&dyn ToValue],
) -> Rwhere
R: TryFromClosureReturnValue,
fn emit_by_name_with_details<R>(
&self,
signal_name: &str,
details: Quark,
args: &[&dyn ToValue],
) -> Rwhere
R: TryFromClosureReturnValue,
source§fn emit_by_name_with_details_and_values(
&self,
signal_name: &str,
details: Quark,
args: &[Value],
) -> Option<Value>
fn emit_by_name_with_details_and_values( &self, signal_name: &str, details: Quark, args: &[Value], ) -> Option<Value>
source§fn emit_with_details<R>(
&self,
signal_id: SignalId,
details: Quark,
args: &[&dyn ToValue],
) -> Rwhere
R: TryFromClosureReturnValue,
fn emit_with_details<R>(
&self,
signal_id: SignalId,
details: Quark,
args: &[&dyn ToValue],
) -> Rwhere
R: TryFromClosureReturnValue,
source§fn emit_with_details_and_values(
&self,
signal_id: SignalId,
details: Quark,
args: &[Value],
) -> Option<Value>
fn emit_with_details_and_values( &self, signal_id: SignalId, details: Quark, args: &[Value], ) -> Option<Value>
source§fn disconnect(&self, handler_id: SignalHandlerId)
fn disconnect(&self, handler_id: SignalHandlerId)
source§fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
notify
signal of the object. Read moresource§fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
notify
signal of the object. Read moresource§unsafe fn connect_notify_unsafe<F>(
&self,
name: Option<&str>,
f: F,
) -> SignalHandlerId
unsafe fn connect_notify_unsafe<F>( &self, name: Option<&str>, f: F, ) -> SignalHandlerId
notify
signal of the object. Read more