#[non_exhaustive]
#[repr(u32)]
pub enum KeyboardInteractivity { None = 0, Exclusive = 1, OnDemand = 2, }
Expand description

types of keyboard interaction possible for a layer shell surface

Types of keyboard interaction possible for layer shell surfaces. The rationale for this is twofold: (1) some applications are not interested in keyboard events and not allowing them to be focused can improve the desktop experience; (2) some applications will want to take exclusive keyboard focus.

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.
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None = 0

no keyboard focus is possible

This value indicates that this surface is not interested in keyboard events and the compositor should never assign it the keyboard focus.

This is the default value, set for newly created layer shell surfaces.

This is useful for e.g. desktop widgets that display information or only have interaction with non-keyboard input devices.

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Exclusive = 1

request exclusive keyboard focus

Request exclusive keyboard focus if this surface is above the shell surface layer.

For the top and overlay layers, the seat will always give exclusive keyboard focus to the top-most layer which has keyboard interactivity set to exclusive. If this layer contains multiple surfaces with keyboard interactivity set to exclusive, the compositor determines the one receiving keyboard events in an implementation- defined manner. In this case, no guarantee is made when this surface will receive keyboard focus (if ever).

For the bottom and background layers, the compositor is allowed to use normal focus semantics.

This setting is mainly intended for applications that need to ensure they receive all keyboard events, such as a lock screen or a password prompt.

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OnDemand = 2

request regular keyboard focus semantics

This requests the compositor to allow this surface to be focused and unfocused by the user in an implementation-defined manner. The user should be able to unfocus this surface even regardless of the layer it is on.

Typically, the compositor will want to use its normal mechanism to manage keyboard focus between layer shell surfaces with this setting and regular toplevels on the desktop layer (e.g. click to focus). Nevertheless, it is possible for a compositor to require a special interaction to focus or unfocus layer shell surfaces (e.g. requiring a click even if focus follows the mouse normally, or providing a keybinding to switch focus between layers).

This setting is mainly intended for desktop shell components (e.g. panels) that allow keyboard interaction. Using this option can allow implementing a desktop shell that can be fully usable without the mouse.

Trait Implementations§

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impl Clone for KeyboardInteractivity

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fn clone(&self) -> KeyboardInteractivity

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 KeyboardInteractivity

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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 From<KeyboardInteractivity> for u32

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fn from(val: KeyboardInteractivity) -> u32

Converts to this type from the input type.
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impl Hash for KeyboardInteractivity

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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, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for KeyboardInteractivity

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

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl PartialEq for KeyboardInteractivity

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

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd for KeyboardInteractivity

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fn partial_cmp(&self, other: &KeyboardInteractivity) -> 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
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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
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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 TryFrom<u32> for KeyboardInteractivity

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type Error = ()

The type returned in the event of a conversion error.
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fn try_from(val: u32) -> Result<KeyboardInteractivity, ()>

Performs the conversion.
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impl Copy for KeyboardInteractivity

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impl Eq for KeyboardInteractivity

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impl StructuralPartialEq for KeyboardInteractivity

Auto Trait Implementations§

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

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

Mutably borrows from an owned value. Read more
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impl<T> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.
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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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impl<T> DowncastSync for T
where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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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>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.