Enum gtk4::PolicyType
source · #[non_exhaustive]
pub enum PolicyType {
Always,
Automatic,
Never,
External,
}
Expand description
Determines how the size should be computed to achieve the one of the visibility mode for the scrollbars.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
Always
The scrollbar is always visible. The view size is independent of the content.
Automatic
The scrollbar will appear and disappear as necessary.
For example, when all of a TreeView
can not be seen.
Never
The scrollbar should never appear. In this mode the content determines the size.
External
Don’t show a scrollbar, but don’t force the size to follow the content. This can be used e.g. to make multiple scrolled windows share a scrollbar.
Trait Implementations§
source§impl Clone for PolicyType
impl Clone for PolicyType
source§fn clone(&self) -> PolicyType
fn clone(&self) -> PolicyType
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl Debug for PolicyType
impl Debug for PolicyType
source§impl Display for PolicyType
impl Display for PolicyType
source§impl From<PolicyType> for Value
impl From<PolicyType> for Value
source§fn from(v: PolicyType) -> Self
fn from(v: PolicyType) -> Self
Converts to this type from the input type.
source§impl<'a> FromValue<'a> for PolicyType
impl<'a> FromValue<'a> for PolicyType
§type Checker = GenericValueTypeChecker<PolicyType>
type Checker = GenericValueTypeChecker<PolicyType>
Value type checker.
source§unsafe fn from_value(value: &'a Value) -> Self
unsafe fn from_value(value: &'a Value) -> Self
Get the contained value from a
Value
. Read moresource§impl HasParamSpec for PolicyType
impl HasParamSpec for PolicyType
type ParamSpec = ParamSpecEnum
§type SetValue = PolicyType
type SetValue = PolicyType
Preferred value to be used as setter for the associated ParamSpec.
type BuilderFn = fn(_: &str, _: PolicyType) -> ParamSpecEnumBuilder<'_, PolicyType>
fn param_spec_builder() -> Self::BuilderFn
source§impl Hash for PolicyType
impl Hash for PolicyType
source§impl Ord for PolicyType
impl Ord for PolicyType
source§fn cmp(&self, other: &PolicyType) -> Ordering
fn cmp(&self, other: &PolicyType) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere Self: Sized,
Compares and returns the maximum of two values. Read more
source§impl PartialEq<PolicyType> for PolicyType
impl PartialEq<PolicyType> for PolicyType
source§fn eq(&self, other: &PolicyType) -> bool
fn eq(&self, other: &PolicyType) -> bool
This method tests for
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd<PolicyType> for PolicyType
impl PartialOrd<PolicyType> for PolicyType
source§fn partial_cmp(&self, other: &PolicyType) -> Option<Ordering>
fn partial_cmp(&self, other: &PolicyType) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
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 moresource§impl StaticType for PolicyType
impl StaticType for PolicyType
source§fn static_type() -> Type
fn static_type() -> Type
Returns the type identifier of
Self
.source§impl ToValue for PolicyType
impl ToValue for PolicyType
source§impl ValueType for PolicyType
impl ValueType for PolicyType
§type Type = PolicyType
type Type = PolicyType
Type to get the
Type
from. Read moreimpl Copy for PolicyType
impl Eq for PolicyType
impl StructuralEq for PolicyType
impl StructuralPartialEq for PolicyType
Auto Trait Implementations§
impl RefUnwindSafe for PolicyType
impl Send for PolicyType
impl Sync for PolicyType
impl Unpin for PolicyType
impl UnwindSafe for PolicyType
Blanket Implementations§
source§impl<T> IntoClosureReturnValue for Twhere
T: Into<Value>,
impl<T> IntoClosureReturnValue for Twhere T: Into<Value>,
fn into_closure_return_value(self) -> Option<Value>
source§impl<T> PropertyGet for Twhere
T: HasParamSpec,
impl<T> PropertyGet for Twhere T: HasParamSpec,
source§impl<T> StaticTypeExt for Twhere
T: StaticType,
impl<T> StaticTypeExt for Twhere T: StaticType,
source§fn ensure_type()
fn ensure_type()
Ensures that the type has been registered with the type system.
source§impl<T> ToSendValue for Twhere
T: Send + ToValue + ?Sized,
impl<T> ToSendValue for Twhere T: Send + ToValue + ?Sized,
source§fn to_send_value(&self) -> SendValue
fn to_send_value(&self) -> SendValue
Returns a
SendValue
clone of self
.