Struct gtk::GestureRotate[−][src]

pub struct GestureRotate(_);

Expand description

GestureRotate is a Gesture implementation able to recognize 2-finger rotations, whenever the angle between both handled sequences changes, the signal::GestureRotate::angle-changed signal is emitted.

Implements

GestureExt, EventControllerExt, glib::ObjectExt

Implementations

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impl GestureRotate

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pub fn new<P: IsA<Widget>>(widget: &P) -> GestureRotate

Returns a newly created Gesture that recognizes 2-touch rotation gestures.

`widget`

a Widget

Returns

a newly created GestureRotate

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pub fn builder() -> GestureRotateBuilder

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

This method returns an instance of GestureRotateBuilder which can be used to create GestureRotate objects.

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pub fn angle_delta(&self) -> f64

If self is active, this function returns the angle difference in radians since the gesture was first recognized. If self is not active, 0 is returned.

Returns

the angle delta in radians

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pub fn connect_angle_changed<F: Fn(&Self, f64, f64) + 'static>(
    &self, 
    f: F
) -> SignalHandlerId

This signal is emitted when the angle between both tracked points changes.

`angle`

Current angle in radians

`angle_delta`

Difference with the starting angle, in radians

Trait Implementations

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impl Clone for GestureRotate

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fn clone(&self) -> GestureRotate

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 GestureRotate

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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 Display for GestureRotate

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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 GestureRotate

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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 GestureRotate

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fn cmp(&self, other: &GestureRotate) -> 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 GestureRotate

type Parent = Gesture

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

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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 GestureRotate

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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

1.0.0[src]

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 GestureRotate

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fn static_type() -> Type

Returns the type identifier of Self.

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impl Eq for GestureRotate

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impl IsA<EventController> for GestureRotate

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impl IsA<Gesture> for GestureRotate

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impl StructuralEq for GestureRotate

Auto Trait Implementations

impl RefUnwindSafe for GestureRotate

impl !Send for GestureRotate

impl !Sync for GestureRotate

impl Unpin for GestureRotate

impl UnwindSafe for GestureRotate

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
    Self: IsA<T>,
    T: ObjectType,

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

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

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
    Self: CanDowncast<T>,
    T: ObjectType,

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

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

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<U> 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<U>(&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 type_(&self) -> Type

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

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

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

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

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

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

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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 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 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 fn connect<'a, N, F>(
    &self, 
    signal_name: N, 
    after: bool, 
    callback: F
) -> Result<SignalHandlerId, BoolError> where
    F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,
    N: Into<&'a str>,

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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: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,

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
    F: Fn(&[Value]) -> Option<Value> + 'static,
    N: Into<&'a str>,

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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: Fn(&[Value]) -> Option<Value> + 'static,

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
    F: Fn(&[Value]) -> Option<Value>,
    N: Into<&'a str>,

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

Emit signal by it’s name.

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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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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_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_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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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<U> 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<U>>::Error>

Performs the conversion.

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

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

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

Performs the conversion.

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

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impl<'a, T, C> FromValueOptional<'a> for T where
    C: ValueTypeChecker<Error = ValueTypeMismatchOrNoneError>,
    T: FromValue<'a, Checker = C>,