Struct gtk4::Constraint[−][src]

pub struct Constraint(_);

Expand description

Constraint describes a constraint between attributes of two widgets, expressed as a linear equation.

The typical equation for a constraint is:

  target.target_attr = source.source_attr × multiplier + constant

Each Constraint is part of a system that will be solved by a ConstraintLayout in order to allocate and position each child widget or guide.

The source and target, as well as their attributes, of a Constraint instance are immutable after creation.

Implementations

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impl Constraint

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pub fn new<P: IsA<ConstraintTarget>, Q: IsA<ConstraintTarget>>(
 target: Option<&P>,
 target_attribute: ConstraintAttribute,
 relation: ConstraintRelation,
 source: Option<&Q>,
 source_attribute: ConstraintAttribute,
 multiplier: f64,
 constant: f64,
 strength: i32
) -> Constraint

Creates a new constraint representing a relation between a layout attribute on a source and a layout attribute on a target.

`relation`

the relation equivalence between target_attribute and source_attribute

`multiplier`

a multiplication factor to be applied to source_attribute

`constant`

a constant factor to be added to source_attribute

pub fn new_constant<P: IsA<ConstraintTarget>>(
 target: Option<&P>,
 target_attribute: ConstraintAttribute,
 relation: ConstraintRelation,
 constant: f64,
 strength: i32
) -> Constraint

Creates a new constraint representing a relation between a layout attribute on a target and a constant value.

`relation`

the relation equivalence between target_attribute and constant

`constant`

a constant factor to be set on target_attribute

pub fn builder() -> ConstraintBuilder

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

This method returns an instance of ConstraintBuilder which can be used to create Constraint objects.

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pub fn constant(&self) -> f64

Retrieves the constant factor added to the source attributes’ value.

pub fn multiplier(&self) -> f64

Retrieves the multiplication factor applied to the source attribute’s value.

pub fn relation(&self) -> ConstraintRelation

The order relation between the terms of the constraint.

pub fn source(&self) -> Option<ConstraintTarget>

Retrieves the ConstraintTarget used as the source for the constraint.

If the source is set to NULL at creation, the constraint will use the widget using the ConstraintLayout as the source.

pub fn source_attribute(&self) -> ConstraintAttribute

Retrieves the attribute of the source to be read by the constraint.

pub fn strength(&self) -> i32

Retrieves the strength of the constraint.

pub fn target(&self) -> Option<ConstraintTarget>

Retrieves the ConstraintTarget used as the target for the constraint.

If the targe is set to NULL at creation, the constraint will use the widget using the ConstraintLayout as the target.

pub fn target_attribute(&self) -> ConstraintAttribute

Retrieves the attribute of the target to be set by the constraint.

pub fn is_attached(&self) -> bool

Checks whether the constraint is attached to a ConstraintLayout, and it is contributing to the layout.

Returns

TRUE if the constraint is attached

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pub fn is_constant(&self) -> bool

Checks whether the constraint describes a relation between an attribute on the property::Constraint::target and a constant value.

Returns

TRUE if the constraint is a constant relation

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pub fn is_required(&self) -> bool

Checks whether the constraint is a required relation for solving the constraint layout.

Trait Implementations

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impl Clone for Constraint

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fn clone(&self) -> Constraint

Returns a copy of the value. Read more

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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl Debug for Constraint

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

Formats the value using the given formatter. Read more

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impl Default for Constraint

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fn default() -> Self

Returns the “default value” for a type. Read more

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impl Display for Constraint

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

Formats the value using the given formatter. Read more

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impl Hash for Constraint

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fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher. Read more

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fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,

Feeds a slice of this type into the given Hasher. Read more

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impl Ord for Constraint

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fn cmp(&self, other: &Constraint) -> Ordering

This method returns an Ordering between self and other. Read more

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fn max(self, other: Self) -> Self

Compares and returns the maximum of two values. Read more

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fn min(self, other: Self) -> Self

Compares and returns the minimum of two values. Read more

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fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval. Read more

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impl ParentClassIs for Constraint

impl<T: ObjectType> PartialEq<T> for Constraint

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fn eq(&self, other: &T) -> bool

This method tests for self and other values to be equal, and is used by ==. Read more

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fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

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impl<T: ObjectType> PartialOrd<T> for Constraint

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fn partial_cmp(&self, other: &T) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more

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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more

1.0.0[src]

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

1.0.0[src]

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more

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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

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impl StaticType for Constraint

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fn static_type() -> Type

Returns the type identifier of Self.

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impl StructuralEq for Constraint

Auto Trait Implementations

impl RefUnwindSafe for Constraint

impl UnwindSafe for Constraint

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

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pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

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pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> Cast for T where
T: ObjectType,

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fn upcast<T>(self) -> T where
T: ObjectType,
Self: IsA<T>,

Upcasts an object to a superclass or interface T. Read more

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fn upcast_ref<T>(&self) -> &T where
T: ObjectType,
Self: IsA<T>,

Upcasts an object to a reference of its superclass or interface T. Read more

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fn downcast<T>(self) -> Result<T, Self> where
T: ObjectType,
Self: CanDowncast<T>,

Tries to downcast to a subclass or interface implementor T. Read more

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fn downcast_ref<T>(&self) -> Option<&T> where
T: ObjectType,
Self: CanDowncast<T>,

Tries to downcast to a reference of its subclass or interface implementor T. Read more

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fn dynamic_cast<T>(self) -> Result<T, Self> where
T: ObjectType,

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

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fn dynamic_cast_ref<T>(&self) -> Option<&T> where
T: ObjectType,

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

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unsafe fn unsafe_cast<T>(self) -> T where
T: ObjectType,

Casts to T unconditionally. Read more

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unsafe fn unsafe_cast_ref<T>(&self) -> &T where
T: ObjectType,

Casts to &T unconditionally. Read more

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impl<T> From<T> for T

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pub fn from(t: T) -> T

Performs the conversion.

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impl<T, U> Into for T where
U: From<T>,

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pub fn into(self) -> U

Performs the conversion.

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impl<T> ObjectExt for T where
T: ObjectType,

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pub fn is(&self) -> bool where
U: StaticType,

Returns true if the object is an instance of (can be cast to) T.

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pub fn set_property<'a, N, V>(
 &self,
 property_name: N,
 value: V
) -> Result<(), BoolError> where
 N: Into<&'a str>,
 V: ToValue,

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pub fn set_property_from_value<'a, N>(
 &self,
 property_name: N,
 value: &Value
) -> Result<(), BoolError> where
 N: Into<&'a str>,

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pub fn set_properties(
&self,
property_values: &[(&str, &dyn ToValue )]
) -> Result<(), BoolError>

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pub fn set_properties_from_value(
&self,
property_values: &[(&str, Value )]
) -> Result<(), BoolError>

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pub fn property<'a, N>(&self, property_name: N) -> Result<Value, BoolError> where
N: Into<&'a str>,

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pub fn has_property<'a, N>(&self, property_name: N, type_: Option<Type>) -> bool where
N: Into<&'a str>,

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pub fn property_type<'a, N>(&self, property_name: N) -> Option<Type> where
N: Into<&'a str>,

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pub fn find_property<'a, N>(&self, property_name: N) -> Option<ParamSpec> where
N: Into<&'a str>,

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pub fn list_properties(&self) -> Vec<ParamSpec, Global>

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pub fn freeze_notify(&self) -> PropertyNotificationFreezeGuard

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pub unsafe fn set_qdata<QD>(&self, key: Quark, value: QD) where
QD: 'static,

Safety Read more

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pub unsafe fn qdata<QD>(&self, key: Quark) -> Option<NonNull<QD>> where
QD: 'static,

Safety Read more

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pub unsafe fn steal_qdata<QD>(&self, key: Quark) -> Option<QD> where
QD: 'static,

Safety Read more

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pub unsafe fn set_data<QD>(&self, key: &str, value: QD) where
QD: 'static,

Safety Read more

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pub unsafe fn data<QD>(&self, key: &str) -> Option<NonNull<QD>> where
QD: 'static,

Safety Read more

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pub unsafe fn steal_data<QD>(&self, key: &str) -> Option<QD> where
QD: 'static,

Safety Read more

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pub fn block_signal(&self, handler_id: &SignalHandlerId)

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pub fn unblock_signal(&self, handler_id: &SignalHandlerId)

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pub fn stop_signal_emission(&self, signal_name: &str)

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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,

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pub fn connect_id<F>(
 &self,
 signal_id: SignalId,
 details: Option<Quark>,
 after: bool,
 callback: F
) -> Result<SignalHandlerId, BoolError> where
 F: 'static + Fn(&[Value ]) -> Option<Value> + Send + Sync,

Same as connect but takes a SignalId instead of a signal name.

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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>,

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pub fn connect_local_id<F>(
 &self,
 signal_id: SignalId,
 details: Option<Quark>,
 after: bool,
 callback: F
) -> Result<SignalHandlerId, BoolError> where
 F: 'static + Fn(&[Value ]) -> Option<Value>,

Same as connect_local but takes a SignalId instead of a signal name.

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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>,

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pub unsafe fn connect_unsafe_id<F>(
 &self,
 signal_id: SignalId,
 details: Option<Quark>,
 after: bool,
 callback: F
) -> Result<SignalHandlerId, BoolError> where
 F: Fn(&[Value ]) -> Option<Value>,

Same as connect_unsafe but takes a SignalId instead of a signal name.

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pub fn emit(
 &self,
 signal_id: SignalId,
 args: &[&dyn ToValue ]
) -> Result<Option<Value>, BoolError>

Emit signal by signal id.

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pub fn emit_with_values(
 &self,
 signal_id: SignalId,
 args: &[Value ]
) -> Result<Option<Value>, BoolError>

Same as emit but takes Value for the arguments.

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pub fn emit_by_name<'a, N>(
 &self,
 signal_name: N,
 args: &[&dyn ToValue ]
) -> Result<Option<Value>, BoolError> where
 N: Into<&'a str>,

Emit signal by its name.

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pub fn emit_by_name_with_values<'a, N>(
 &self,
 signal_name: N,
 args: &[Value ]
) -> Result<Option<Value>, BoolError> where
 N: Into<&'a str>,

Same as emit_by_name but takes Value for the arguments.

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pub fn emit_with_details(
 &self,
 signal_id: SignalId,
 details: Quark,
 args: &[&dyn ToValue ]
) -> Result<Option<Value>, BoolError>

Emit signal with details by signal id.

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pub fn emit_with_details_and_values(
 &self,
 signal_id: SignalId,
 details: Quark,
 args: &[Value ]
) -> Result<Option<Value>, BoolError>

Same as emit_with_details but takes Value for the arguments.

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pub fn disconnect(&self, handler_id: SignalHandlerId)

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pub fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId where
F: 'static + Fn(&T, &ParamSpec) + Send + Sync,

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pub fn connect_notify_local<F>(
 &self,
 name: Option<&str>,
 f: F
) -> SignalHandlerId where
 F: 'static + Fn(&T, &ParamSpec),

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pub unsafe fn connect_notify_unsafe<F>(
 &self,
 name: Option<&str>,
 f: F
) -> SignalHandlerId where
 F: Fn(&T, &ParamSpec),

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pub fn notify<'a, N>(&self, property_name: N) where
N: Into<&'a str>,

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pub fn notify_by_pspec(&self, pspec: &ParamSpec)

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pub fn downgrade(&self) -> WeakRef<T>

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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>,

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pub fn ref_count(&self) -> u32

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impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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pub fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T> ToSendValue for T where
T: Send + ToValue + ?Sized,

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pub fn to_send_value(&self) -> SendValue

Returns a SendValue clone of self.

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impl<T> ToString for T where
T: Display + ?Sized,

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pub default fn to_string(&self) -> String

Converts the given value to a String. Read more

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

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pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

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pub fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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impl<Super, Sub> CanDowncast for Super where
Super: IsA<Super>,
Sub: IsA<Super>,

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Struct gtk4::Constraint[−][src]

Implementations

impl Constraint

pub fn new<P: IsA<ConstraintTarget>, Q: IsA<ConstraintTarget>>( target: Option<&P>, target_attribute: ConstraintAttribute, relation: ConstraintRelation, source: Option<&Q>, source_attribute: ConstraintAttribute, multiplier: f64, constant: f64, strength: i32) -> Constraint

pub fn new_constant<P: IsA<ConstraintTarget>>( target: Option<&P>, target_attribute: ConstraintAttribute, relation: ConstraintRelation, constant: f64, strength: i32) -> Constraint

pub fn builder() -> ConstraintBuilder

pub fn constant(&self) -> f64

pub fn multiplier(&self) -> f64

pub fn relation(&self) -> ConstraintRelation

pub fn source(&self) -> Option<ConstraintTarget>

pub fn source_attribute(&self) -> ConstraintAttribute

pub fn strength(&self) -> i32

pub fn target(&self) -> Option<ConstraintTarget>

pub fn target_attribute(&self) -> ConstraintAttribute

pub fn is_attached(&self) -> bool

pub fn is_constant(&self) -> bool

pub fn is_required(&self) -> bool

Trait Implementations

impl Clone for Constraint

fn clone(&self) -> Constraint

fn clone_from(&mut self, source: &Self)

impl Debug for Constraint

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

impl Default for Constraint

fn default() -> Self

impl Display for Constraint

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

impl Hash for Constraint

fn hash<__H: Hasher>(&self, state: &mut __H)

fn hash_slice<H>(data: &[Self], state: &mut H) where H: Hasher,

impl Ord for Constraint

fn cmp(&self, other: &Constraint) -> Ordering

fn max(self, other: Self) -> Self

fn min(self, other: Self) -> Self

fn clamp(self, min: Self, max: Self) -> Self

impl ParentClassIs for Constraint

type Parent = Object

impl<T: ObjectType> PartialEq<T> for Constraint

fn eq(&self, other: &T) -> bool

fn ne(&self, other: &Rhs) -> bool

impl<T: ObjectType> PartialOrd<T> for Constraint

fn partial_cmp(&self, other: &T) -> Option<Ordering>

fn lt(&self, other: &Rhs) -> bool

fn le(&self, other: &Rhs) -> bool

fn gt(&self, other: &Rhs) -> bool

fn ge(&self, other: &Rhs) -> bool

impl StaticType for Constraint

fn static_type() -> Type

impl Eq for Constraint

impl StructuralEq for Constraint

Auto Trait Implementations

impl RefUnwindSafe for Constraint

impl !Send for Constraint

impl !Sync for Constraint

impl Unpin for Constraint

impl UnwindSafe for Constraint

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

pub fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

pub fn borrow_mut(&mut self) -> &mut T

impl<T> Cast for T where T: ObjectType,

fn upcast<T>(self) -> T where T: ObjectType, Self: IsA<T>,

fn upcast_ref<T>(&self) -> &T where T: ObjectType, Self: IsA<T>,

fn downcast<T>(self) -> Result<T, Self> where T: ObjectType, Self: CanDowncast<T>,

fn downcast_ref<T>(&self) -> Option<&T> where T: ObjectType, Self: CanDowncast<T>,

fn dynamic_cast<T>(self) -> Result<T, Self> where T: ObjectType,

fn dynamic_cast_ref<T>(&self) -> Option<&T> where T: ObjectType,

unsafe fn unsafe_cast<T>(self) -> T where T: ObjectType,

unsafe fn unsafe_cast_ref<T>(&self) -> &T where T: ObjectType,

impl<T> From<T> for T

pub fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

pub fn into(self) -> U

impl<T> ObjectExt for T where T: ObjectType,

pub fn is<U>(&self) -> bool where U: StaticType,

pub fn type_(&self) -> Type

pub fn object_class(&self) -> &Class<Object>

pub fn new<P: IsA<ConstraintTarget>, Q: IsA<ConstraintTarget>>(
target: Option<&P>,
target_attribute: ConstraintAttribute,
relation: ConstraintRelation,
source: Option<&Q>,
source_attribute: ConstraintAttribute,
multiplier: f64,
constant: f64,
strength: i32
) -> Constraint

pub fn new_constant<P: IsA<ConstraintTarget>>(
target: Option<&P>,
target_attribute: ConstraintAttribute,
relation: ConstraintRelation,
constant: f64,
strength: i32
) -> Constraint

fn hash<H: Hasher>(&self, state: &mut H)

fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T> Cast for T where
T: ObjectType,

fn upcast<T>(self) -> T where
T: ObjectType,
Self: IsA<T>,

fn upcast_ref<T>(&self) -> &T where
T: ObjectType,
Self: IsA<T>,

fn downcast<T>(self) -> Result<T, Self> where
T: ObjectType,
Self: CanDowncast<T>,

fn downcast_ref<T>(&self) -> Option<&T> where
T: ObjectType,
Self: CanDowncast<T>,

fn dynamic_cast<T>(self) -> Result<T, Self> where
T: ObjectType,

fn dynamic_cast_ref<T>(&self) -> Option<&T> where
T: ObjectType,

unsafe fn unsafe_cast<T>(self) -> T where
T: ObjectType,

unsafe fn unsafe_cast_ref<T>(&self) -> &T where
T: ObjectType,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T> ObjectExt for T where
T: ObjectType,

pub fn is<U>(&self) -> bool where
U: StaticType,

pub fn class(&self) -> &Class<T> where
T: IsClass,

pub fn class_of<U>(&self) -> Option<&Class<U>> where
U: IsClass,

pub fn interface<U>(&self) -> Option<InterfaceRef<'_, U>> where
U: IsInterface,

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(
&self,
property_values: &[(&str, &dyn ToValue )]
) -> Result<(), BoolError>

pub fn set_properties_from_value(
&self,
property_values: &[(&str, Value )]
) -> Result<(), BoolError>

pub fn property<'a, N>(&self, property_name: N) -> Result<Value, BoolError> where
N: Into<&'a str>,

pub fn has_property<'a, N>(&self, property_name: N, type_: Option<Type>) -> bool where
N: Into<&'a str>,

pub fn property_type<'a, N>(&self, property_name: N) -> Option<Type> where
N: Into<&'a str>,

pub fn find_property<'a, N>(&self, property_name: N) -> Option<ParamSpec> where
N: Into<&'a str>,

pub unsafe fn set_qdata<QD>(&self, key: Quark, value: QD) where
QD: 'static,

pub unsafe fn qdata<QD>(&self, key: Quark) -> Option<NonNull<QD>> where
QD: 'static,

pub unsafe fn steal_qdata<QD>(&self, key: Quark) -> Option<QD> where
QD: 'static,

pub unsafe fn set_data<QD>(&self, key: &str, value: QD) where
QD: 'static,

pub unsafe fn data<QD>(&self, key: &str) -> Option<NonNull<QD>> where
QD: 'static,

pub unsafe fn steal_data<QD>(&self, key: &str) -> Option<QD> where
QD: 'static,

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,

pub fn connect_id<F>(
&self,
signal_id: SignalId,
details: Option<Quark>,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: 'static + Fn(&[Value ]) -> Option<Value> + Send + Sync,

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>,

pub fn connect_local_id<F>(
&self,
signal_id: SignalId,
details: Option<Quark>,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: 'static + Fn(&[Value ]) -> Option<Value>,

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>,

pub unsafe fn connect_unsafe_id<F>(
&self,
signal_id: SignalId,
details: Option<Quark>,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value ]) -> Option<Value>,

pub fn emit(
&self,
signal_id: SignalId,
args: &[&dyn ToValue ]
) -> Result<Option<Value>, BoolError>

pub fn emit_with_values(
&self,
signal_id: SignalId,
args: &[Value ]
) -> Result<Option<Value>, BoolError>

pub fn emit_by_name<'a, N>(
&self,
signal_name: N,
args: &[&dyn ToValue ]
) -> Result<Option<Value>, BoolError> where
N: Into<&'a str>,

pub fn emit_by_name_with_values<'a, N>(
&self,
signal_name: N,
args: &[Value ]
) -> Result<Option<Value>, BoolError> where
N: Into<&'a str>,

pub fn emit_with_details(
&self,
signal_id: SignalId,
details: Quark,
args: &[&dyn ToValue ]
) -> Result<Option<Value>, BoolError>

pub fn emit_with_details_and_values(
&self,
signal_id: SignalId,
details: Quark,
args: &[Value ]
) -> Result<Option<Value>, BoolError>

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),