Struct gtk4::GestureStylus [−][src]
pub struct GestureStylus(_);Expand description
GestureStylus is a Gesture specific to stylus input.
The provided signals just relay the basic information of the stylus events.
Implements
GestureSingleExt, GestureExt, EventControllerExt, glib::ObjectExt
Implementations
Creates a new builder-pattern struct instance to construct GestureStylus objects.
This method returns an instance of GestureStylusBuilder which can be used to create GestureStylus objects.
Returns the current value for the requested axis.
This function must be called from the handler of one of the
signal::GestureStylus::down, signal::GestureStylus::motion,
signal::GestureStylus::up or signal::GestureStylus::proximity
signals.
axis
requested device axis
Returns
true if there is a current value for the axis
value
return location for the axis value
Returns the accumulated backlog of tracking information.
By default, GTK will limit rate of input events. On stylus input where accuracy of strokes is paramount, this function returns the accumulated coordinate/timing state before the emission of the current [Gtk.GestureStylus::motion] signal.
This function may only be called within a signal::GestureStylus::motion
signal handler, the state given in this signal and obtainable through
axis() express the latest (most up-to-date)
state in motion history.
The backlog is provided in chronological order.
Returns
true if there is a backlog to unfold in the current state.
backlog
coordinates and times for the backlog events
Returns the gdk::DeviceTool currently driving input through this gesture.
This function must be called from the handler of one of the
signal::GestureStylus::down, signal::GestureStylus::motion,
signal::GestureStylus::up or signal::GestureStylus::proximity
signals.
Returns
The current stylus tool
Returns the current values for the requested axes.
This function must be called from the handler of one of the
signal::GestureStylus::down, signal::GestureStylus::motion,
signal::GestureStylus::up or signal::GestureStylus::proximity
signals.
axes
array of requested axes, terminated with gdk::AxisUse::Ignore
Returns
true if there is a current value for the axes
values
return location for the axis values
Trait Implementations
type Parent = GestureSingle
This method returns an ordering between self and other values if one exists. Read more
This method tests less than (for self and other) and is used by the < operator. Read more
This method tests less than or equal to (for self and other) and is used by the <=
operator. Read more
This method tests greater than (for self and other) and is used by the > operator. Read more
Returns the type identifier of Self.
Auto Trait Implementations
impl RefUnwindSafe for GestureStylus
impl !Send for GestureStylus
impl !Sync for GestureStylus
impl Unpin for GestureStylus
impl UnwindSafe for GestureStylus
Blanket Implementations
Mutably borrows from an owned value. Read more
Upcasts an object to a superclass or interface T. Read more
Upcasts an object to a reference of its superclass or interface T. Read more
Tries to downcast to a subclass or interface implementor T. Read more
Tries to downcast to a reference of its subclass or interface implementor T. Read more
Tries to cast to an object of type T. This handles upcasting, downcasting
and casting between interface and interface implementors. All checks are performed at
runtime, while downcast and upcast will do many checks at compile-time already. Read more
Tries to cast to reference to an object of type T. This handles upcasting, downcasting
and casting between interface and interface implementors. All checks are performed at
runtime, while downcast and upcast will do many checks at compile-time already. Read more
Casts to T unconditionally. Read more
Casts to &T unconditionally. Read more
Returns true if the object is an instance of (can be cast to) T.
pub fn set_property<'a, N, V>(
&self,
property_name: N,
value: V
) -> Result<(), BoolError> where
N: Into<&'a str>,
V: ToValue,
pub fn set_property_from_value<'a, N>(
&self,
property_name: N,
value: &Value
) -> Result<(), BoolError> where
N: Into<&'a str>,
pub fn set_properties_from_value(
&self,
property_values: &[(&str, Value)]
) -> Result<(), BoolError>
pub fn has_property<'a, N>(&self, property_name: N, type_: Option<Type>) -> bool where
N: Into<&'a str>,
pub fn find_property<'a, N>(&self, property_name: N) -> Option<ParamSpec> where
N: Into<&'a str>,
Safety Read more
Safety Read more
Safety Read more
Safety Read more
pub fn connect<'a, N, F>(
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
N: Into<&'a str>,
F: 'static + Fn(&[Value]) -> Option<Value> + Send + Sync,
Same as connect but takes a SignalId instead of a signal name.
pub fn connect_local<'a, N, F>(
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
N: Into<&'a str>,
F: 'static + Fn(&[Value]) -> Option<Value>,
Same as connect_local but takes a SignalId instead of a signal name.
pub unsafe fn connect_unsafe<'a, N, F>(
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
N: Into<&'a str>,
F: Fn(&[Value]) -> Option<Value>,
Same as connect_unsafe but takes a SignalId instead of a signal name.
Emit signal by signal id.
Same as emit but takes Value for the arguments.
Emit signal by its name.
Same as emit_by_name but takes Value for the arguments.
Emit signal with details by signal id.
Same as emit_with_details but takes Value for the arguments.
pub fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId where
F: 'static + Fn(&T, &ParamSpec) + Send + Sync,
pub fn connect_notify_local<F>(
&self,
name: Option<&str>,
f: F
) -> SignalHandlerId where
F: 'static + Fn(&T, &ParamSpec),
pub unsafe fn connect_notify_unsafe<F>(
&self,
name: Option<&str>,
f: F
) -> SignalHandlerId where
F: Fn(&T, &ParamSpec),
pub fn bind_property<'a, O, N, M>(
&'a self,
source_property: N,
target: &'a O,
target_property: M
) -> BindingBuilder<'a> where
O: ObjectType,
N: Into<&'a str>,
M: Into<&'a str>,
Returns a SendValue clone of self.