Struct gtk::Scrollable 
source · [−]#[repr(transparent)]pub struct Scrollable { /* private fields */ }Expand description
Scrollable is an interface that is implemented by widgets with native
scrolling ability.
To implement this interface you should override the
property::Scrollable::hadjustment and property::Scrollable::vadjustment properties.
Creating a scrollable widget
All scrollable widgets should do the following.
- 
When a parent widget sets the scrollable child widget’s adjustments, the widget should populate the adjustments’ property::Adjustment::lower,property::Adjustment::upper,property::Adjustment::step-increment,property::Adjustment::page-incrementandproperty::Adjustment::page-sizeproperties and connect to thesignal::Adjustment::value-changedsignal.
- 
Because its preferred size is the size for a fully expanded widget, the scrollable widget must be able to cope with underallocations. This means that it must accept any value passed to its GtkWidgetClass.size_allocate()function.
- 
When the parent allocates space to the scrollable child widget, the widget should update the adjustments’ properties with new values. 
- 
When any of the adjustments emits the signal::Adjustment::value-changedsignal, the scrollable widget should scroll its contents.
Implements
Implementations
sourceimpl Scrollable
 
impl Scrollable
pub const NONE: Option<&'static Scrollable> = None
Trait Implementations
sourceimpl Clone for Scrollable
 
impl Clone for Scrollable
sourceimpl Debug for Scrollable
 
impl Debug for Scrollable
sourceimpl Display for Scrollable
 
impl Display for Scrollable
sourceimpl Hash for Scrollable
 
impl Hash for Scrollable
sourceimpl Ord for Scrollable
 
impl Ord for Scrollable
1.21.0 · sourceconst fn max(self, other: Self) -> Self
 
const fn max(self, other: Self) -> Self
1.21.0 · sourceconst fn min(self, other: Self) -> Self
 
const fn min(self, other: Self) -> Self
1.50.0 · sourceconst fn clamp(self, min: Self, max: Self) -> Selfwhere
    Self: PartialOrd<Self>,
 
const fn clamp(self, min: Self, max: Self) -> Selfwhere
    Self: PartialOrd<Self>,
sourceimpl<OT: ObjectType> PartialEq<OT> for Scrollable
 
impl<OT: ObjectType> PartialEq<OT> for Scrollable
sourceimpl<OT: ObjectType> PartialOrd<OT> for Scrollable
 
impl<OT: ObjectType> PartialOrd<OT> for Scrollable
sourcefn partial_cmp(&self, other: &OT) -> Option<Ordering>
 
fn partial_cmp(&self, other: &OT) -> Option<Ordering>
1.0.0 · sourceconst fn le(&self, other: &Rhs) -> bool
 
const fn le(&self, other: &Rhs) -> bool
self and other) and is used by the <=
operator. Read moresourceimpl StaticType for Scrollable
 
impl StaticType for Scrollable
sourcefn static_type() -> Type
 
fn static_type() -> Type
Self.impl Eq for Scrollable
impl IsA<Scrollable> for IconView
impl IsA<Scrollable> for Layout
impl IsA<Scrollable> for TextView
impl IsA<Scrollable> for ToolPalette
impl IsA<Scrollable> for TreeView
impl IsA<Scrollable> for Viewport
Auto Trait Implementations
impl RefUnwindSafe for Scrollable
impl !Send for Scrollable
impl !Sync for Scrollable
impl Unpin for Scrollable
impl UnwindSafe for Scrollable
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
    T: ?Sized,
 
impl<T> BorrowMut<T> for Twhere
    T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
 
fn borrow_mut(&mut self) -> &mut T
sourceimpl<T> Cast for Twhere
    T: ObjectType,
 
impl<T> Cast for Twhere
    T: ObjectType,
sourcefn upcast<T>(self) -> Twhere
    T: ObjectType,
    Self: IsA<T>,
 
fn upcast<T>(self) -> Twhere
    T: ObjectType,
    Self: IsA<T>,
T. Read moresourcefn upcast_ref<T>(&self) -> &Twhere
    T: ObjectType,
    Self: IsA<T>,
 
fn upcast_ref<T>(&self) -> &Twhere
    T: ObjectType,
    Self: IsA<T>,
T. Read moresourcefn downcast<T>(self) -> Result<T, Self>where
    T: ObjectType,
    Self: CanDowncast<T>,
 
fn downcast<T>(self) -> Result<T, Self>where
    T: ObjectType,
    Self: CanDowncast<T>,
T. Read moresourcefn downcast_ref<T>(&self) -> Option<&T>where
    T: ObjectType,
    Self: CanDowncast<T>,
 
fn downcast_ref<T>(&self) -> Option<&T>where
    T: ObjectType,
    Self: CanDowncast<T>,
T. Read moresourcefn dynamic_cast<T>(self) -> Result<T, Self>where
    T: ObjectType,
 
fn dynamic_cast<T>(self) -> Result<T, Self>where
    T: ObjectType,
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 moresourcefn dynamic_cast_ref<T>(&self) -> Option<&T>where
    T: ObjectType,
 
fn dynamic_cast_ref<T>(&self) -> Option<&T>where
    T: ObjectType,
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 moresourceunsafe fn unsafe_cast<T>(self) -> Twhere
    T: ObjectType,
 
unsafe fn unsafe_cast<T>(self) -> Twhere
    T: ObjectType,
T unconditionally. Read moresourceunsafe fn unsafe_cast_ref<T>(&self) -> &Twhere
    T: ObjectType,
 
unsafe fn unsafe_cast_ref<T>(&self) -> &Twhere
    T: ObjectType,
&T unconditionally. Read moresourceimpl<T> ObjectExt for Twhere
    T: ObjectType,
 
impl<T> ObjectExt for Twhere
    T: ObjectType,
sourcefn is<U>(&self) -> boolwhere
    U: StaticType,
 
fn is<U>(&self) -> boolwhere
    U: StaticType,
true if the object is an instance of (can be cast to) T.sourcefn object_class(&self) -> &Class<Object>
 
fn object_class(&self) -> &Class<Object>
ObjectClass of the object. Read moresourcefn class_of<U>(&self) -> Option<&Class<U>>where
    U: IsClass,
 
fn class_of<U>(&self) -> Option<&Class<U>>where
    U: IsClass,
T. Read moresourcefn interface<U>(&self) -> Option<InterfaceRef<'_, U>>where
    U: IsInterface,
 
fn interface<U>(&self) -> Option<InterfaceRef<'_, U>>where
    U: IsInterface,
T of the object. Read moresourcefn set_property<V>(&self, property_name: &str, value: V)where
    V: ToValue,
 
fn set_property<V>(&self, property_name: &str, value: V)where
    V: ToValue,
sourcefn set_property_from_value(&self, property_name: &str, value: &Value)
 
fn set_property_from_value(&self, property_name: &str, value: &Value)
sourcefn set_properties(&self, property_values: &[(&str, &dyn ToValue)])
 
fn set_properties(&self, property_values: &[(&str, &dyn ToValue)])
sourcefn set_properties_from_value(&self, property_values: &[(&str, Value)])
 
fn set_properties_from_value(&self, property_values: &[(&str, Value)])
sourcefn property<V>(&self, property_name: &str) -> Vwhere
    V: 'static + for<'b> FromValue<'b>,
 
fn property<V>(&self, property_name: &str) -> Vwhere
    V: 'static + for<'b> FromValue<'b>,
property_name of the object and cast it to the type V. Read moresourcefn property_value(&self, property_name: &str) -> Value
 
fn property_value(&self, property_name: &str) -> Value
property_name of the object. Read moresourcefn property_type(&self, property_name: &str) -> Option<Type>
 
fn property_type(&self, property_name: &str) -> Option<Type>
property_name of this object. Read moresourcefn find_property(&self, property_name: &str) -> Option<ParamSpec>
 
fn find_property(&self, property_name: &str) -> Option<ParamSpec>
ParamSpec of the property property_name of this object.sourcefn list_properties(&self) -> PtrSlice<ParamSpec>
 
fn list_properties(&self) -> PtrSlice<ParamSpec>
ParamSpec of the properties of this object.sourcefn freeze_notify(&self) -> PropertyNotificationFreezeGuard
 
fn freeze_notify(&self) -> PropertyNotificationFreezeGuard
sourceunsafe fn set_qdata<QD>(&self, key: Quark, value: QD)where
    QD: 'static,
 
unsafe fn set_qdata<QD>(&self, key: Quark, value: QD)where
    QD: 'static,
key. Read moresourceunsafe fn qdata<QD>(&self, key: Quark) -> Option<NonNull<QD>>where
    QD: 'static,
 
unsafe fn qdata<QD>(&self, key: Quark) -> Option<NonNull<QD>>where
    QD: 'static,
key. Read moresourceunsafe fn steal_qdata<QD>(&self, key: Quark) -> Option<QD>where
    QD: 'static,
 
unsafe fn steal_qdata<QD>(&self, key: Quark) -> Option<QD>where
    QD: 'static,
key. Read moresourceunsafe fn set_data<QD>(&self, key: &str, value: QD)where
    QD: 'static,
 
unsafe fn set_data<QD>(&self, key: &str, value: QD)where
    QD: 'static,
key. Read moresourceunsafe fn data<QD>(&self, key: &str) -> Option<NonNull<QD>>where
    QD: 'static,
 
unsafe fn data<QD>(&self, key: &str) -> Option<NonNull<QD>>where
    QD: 'static,
key. Read moresourceunsafe fn steal_data<QD>(&self, key: &str) -> Option<QD>where
    QD: 'static,
 
unsafe fn steal_data<QD>(&self, key: &str) -> Option<QD>where
    QD: 'static,
key. Read moresourcefn block_signal(&self, handler_id: &SignalHandlerId)
 
fn block_signal(&self, handler_id: &SignalHandlerId)
sourcefn unblock_signal(&self, handler_id: &SignalHandlerId)
 
fn unblock_signal(&self, handler_id: &SignalHandlerId)
sourcefn stop_signal_emission(&self, signal_id: SignalId, detail: Option<Quark>)
 
fn stop_signal_emission(&self, signal_id: SignalId, detail: Option<Quark>)
sourcefn stop_signal_emission_by_name(&self, signal_name: &str)
 
fn stop_signal_emission_by_name(&self, signal_name: &str)
sourcefn connect<F>(
    &self,
    signal_name: &str,
    after: bool,
    callback: F
) -> SignalHandlerIdwhere
    F: 'static + Fn(&[Value]) -> Option<Value> + Send + Sync,
 
fn connect<F>(
    &self,
    signal_name: &str,
    after: bool,
    callback: F
) -> SignalHandlerIdwhere
    F: 'static + Fn(&[Value]) -> Option<Value> + Send + Sync,
signal_name on this object. Read moresourcefn connect_id<F>(
    &self,
    signal_id: SignalId,
    details: Option<Quark>,
    after: bool,
    callback: F
) -> SignalHandlerIdwhere
    F: 'static + Fn(&[Value]) -> Option<Value> + Send + Sync,
 
fn connect_id<F>(
    &self,
    signal_id: SignalId,
    details: Option<Quark>,
    after: bool,
    callback: F
) -> SignalHandlerIdwhere
    F: 'static + Fn(&[Value]) -> Option<Value> + Send + Sync,
signal_id on this object. Read moresourcefn connect_local<F>(
    &self,
    signal_name: &str,
    after: bool,
    callback: F
) -> SignalHandlerIdwhere
    F: 'static + Fn(&[Value]) -> Option<Value>,
 
fn connect_local<F>(
    &self,
    signal_name: &str,
    after: bool,
    callback: F
) -> SignalHandlerIdwhere
    F: 'static + Fn(&[Value]) -> Option<Value>,
signal_name on this object. Read moresourcefn connect_local_id<F>(
    &self,
    signal_id: SignalId,
    details: Option<Quark>,
    after: bool,
    callback: F
) -> SignalHandlerIdwhere
    F: 'static + Fn(&[Value]) -> Option<Value>,
 
fn connect_local_id<F>(
    &self,
    signal_id: SignalId,
    details: Option<Quark>,
    after: bool,
    callback: F
) -> SignalHandlerIdwhere
    F: 'static + Fn(&[Value]) -> Option<Value>,
signal_id on this object. Read moresourceunsafe fn connect_unsafe<F>(
    &self,
    signal_name: &str,
    after: bool,
    callback: F
) -> SignalHandlerIdwhere
    F: Fn(&[Value]) -> Option<Value>,
 
unsafe fn connect_unsafe<F>(
    &self,
    signal_name: &str,
    after: bool,
    callback: F
) -> SignalHandlerIdwhere
    F: Fn(&[Value]) -> Option<Value>,
signal_name on this object. Read moresourceunsafe fn connect_unsafe_id<F>(
    &self,
    signal_id: SignalId,
    details: Option<Quark>,
    after: bool,
    callback: F
) -> SignalHandlerIdwhere
    F: Fn(&[Value]) -> Option<Value>,
 
unsafe fn connect_unsafe_id<F>(
    &self,
    signal_id: SignalId,
    details: Option<Quark>,
    after: bool,
    callback: F
) -> SignalHandlerIdwhere
    F: Fn(&[Value]) -> Option<Value>,
signal_id on this object. Read moresourcefn 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 moresourcefn 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 moresourcefn 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. Read moresourcefn 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,
sourcefn 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.sourcefn 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,
sourcefn 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>
sourcefn 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,
sourcefn 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>
sourcefn 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,
sourcefn 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>
sourcefn disconnect(&self, handler_id: SignalHandlerId)
 
fn disconnect(&self, handler_id: SignalHandlerId)
sourcefn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere
    F: 'static + Fn(&T, &ParamSpec) + Send + Sync,
 
fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere
    F: 'static + Fn(&T, &ParamSpec) + Send + Sync,
notify signal of the object. Read moresourcefn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere
    F: 'static + Fn(&T, &ParamSpec),
 
fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere
    F: 'static + Fn(&T, &ParamSpec),
notify signal of the object. Read moresourceunsafe fn connect_notify_unsafe<F>(
    &self,
    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