Struct ZwpPointerConstraintsV1

pub struct ZwpPointerConstraintsV1 { /* private fields */ }

Available on crate feature wayland and Linux only.

constrain the movement of a pointer

The global interface exposing pointer constraining functionality. It exposes two requests: lock_pointer for locking the pointer to its position, and confine_pointer for locking the pointer to a region.

The lock_pointer and confine_pointer requests create the objects wp_locked_pointer and wp_confined_pointer respectively, and the client can use these objects to interact with the lock.

For any surface, only one lock or confinement may be active across all wl_pointer objects of the same seat. If a lock or confinement is requested when another lock or confinement is active or requested on the same surface and with any of the wl_pointer objects of the same seat, an ‘already_constrained’ error will be raised.

This interface has no events.

Implementations

impl ZwpPointerConstraintsV1

pub fn destroy(&self)

destroy the pointer constraints manager object

Used by the client to notify the server that it will no longer use this pointer constraints object.

pub fn lock_pointer<U, D>( &self, surface: &WlSurface, pointer: &WlPointer, region: Option<&WlRegion>, lifetime: Lifetime, qh: &QueueHandle<D>, udata: U, ) -> ZwpLockedPointerV1

where U: Send + Sync + 'static, D: Dispatch<ZwpLockedPointerV1, U> + 'static,

lock pointer to a position

The lock_pointer request lets the client request to disable movements of the virtual pointer (i.e. the cursor), effectively locking the pointer to a position. This request may not take effect immediately; in the future, when the compositor deems implementation-specific constraints are satisfied, the pointer lock will be activated and the compositor sends a locked event.

The protocol provides no guarantee that the constraints are ever satisfied, and does not require the compositor to send an error if the constraints cannot ever be satisfied. It is thus possible to request a lock that will never activate.

There may not be another pointer constraint of any kind requested or active on the surface for any of the wl_pointer objects of the seat of the passed pointer when requesting a lock. If there is, an error will be raised. See general pointer lock documentation for more details.

The intersection of the region passed with this request and the input region of the surface is used to determine where the pointer must be in order for the lock to activate. It is up to the compositor whether to warp the pointer or require some kind of user interaction for the lock to activate. If the region is null the surface input region is used.

A surface may receive pointer focus without the lock being activated.

The request creates a new object wp_locked_pointer which is used to interact with the lock as well as receive updates about its state. See the the description of wp_locked_pointer for further information.

Note that while a pointer is locked, the wl_pointer objects of the corresponding seat will not emit any wl_pointer.motion events, but relative motion events will still be emitted via wp_relative_pointer objects of the same seat. wl_pointer.axis and wl_pointer.button events are unaffected.

pub fn confine_pointer<U, D>( &self, surface: &WlSurface, pointer: &WlPointer, region: Option<&WlRegion>, lifetime: Lifetime, qh: &QueueHandle<D>, udata: U, ) -> ZwpConfinedPointerV1

where U: Send + Sync + 'static, D: Dispatch<ZwpConfinedPointerV1, U> + 'static,

confine pointer to a region

The confine_pointer request lets the client request to confine the pointer cursor to a given region. This request may not take effect immediately; in the future, when the compositor deems implementation- specific constraints are satisfied, the pointer confinement will be activated and the compositor sends a confined event.

The intersection of the region passed with this request and the input region of the surface is used to determine where the pointer must be in order for the confinement to activate. It is up to the compositor whether to warp the pointer or require some kind of user interaction for the confinement to activate. If the region is null the surface input region is used.

The request will create a new object wp_confined_pointer which is used to interact with the confinement as well as receive updates about its state. See the the description of wp_confined_pointer for further information.

Trait Implementations

impl Borrow<ObjectId> for ZwpPointerConstraintsV1

fn borrow(&self) -> &ObjectId

Immutably borrows from an owned value.

impl Clone for ZwpPointerConstraintsV1

fn clone(&self) -> ZwpPointerConstraintsV1

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ZwpPointerConstraintsV1

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

Formats the value using the given formatter.

impl<D> Dispatch<ZwpPointerConstraintsV1, GlobalData, D> for PointerConstraintsState

where D: Dispatch<ZwpPointerConstraintsV1, GlobalData> + PointerConstraintsHandler,

fn event( _data: &mut D, _constraints: &ZwpPointerConstraintsV1, _event: Event, _: &GlobalData, _conn: &Connection, _qh: &QueueHandle<D>, )

Called when an event from the server is processed

fn event_created_child( opcode: u16, _qhandle: &QueueHandle<State>, ) -> Arc<dyn ObjectData>

Method used to initialize the user-data of objects created by events

impl Hash for ZwpPointerConstraintsV1

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

where H: Hasher,

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq<Weak<ZwpPointerConstraintsV1>> for ZwpPointerConstraintsV1

fn eq(&self, other: &Weak<ZwpPointerConstraintsV1>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialEq for ZwpPointerConstraintsV1

fn eq(&self, other: &ZwpPointerConstraintsV1) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl ProvidesBoundGlobal<ZwpPointerConstraintsV1, 1> for PointerConstraintsState

fn bound_global(&self) -> Result<ZwpPointerConstraintsV1, GlobalError>

fn with_min_version(&self, version: u32) -> Result<I, GlobalError>

impl Proxy for ZwpPointerConstraintsV1

type Request<'request> = Request<'request>

The request enum for this interface

type Event = Event

The event enum for this interface

fn interface() -> &'static Interface

The interface description

fn id(&self) -> ObjectId

The ID of this object

fn version(&self) -> u32

The version of this object

fn data<U>(&self) -> Option<&U>

where U: Send + Sync + 'static,

Access the user-data associated with this object

fn object_data(&self) -> Option<&Arc<dyn ObjectData>>

Access the raw data associated with this object.

fn backend(&self) -> &WeakBackend

Access the backend associated with this object

fn send_request( &self, req: <ZwpPointerConstraintsV1 as Proxy>::Request<'_>, ) -> Result<(), InvalidId>

Send a request for this object.

fn send_constructor<I>( &self, req: <ZwpPointerConstraintsV1 as Proxy>::Request<'_>, data: Arc<dyn ObjectData>, ) -> Result<I, InvalidId>

where I: Proxy,

Send a request for this object that creates another object.

fn from_id( conn: &Connection, id: ObjectId, ) -> Result<ZwpPointerConstraintsV1, InvalidId>

Create an object proxy from its ID

fn inert(backend: WeakBackend) -> ZwpPointerConstraintsV1

Create an inert object proxy

fn parse_event( conn: &Connection, msg: Message<ObjectId, OwnedFd>, ) -> Result<(ZwpPointerConstraintsV1, <ZwpPointerConstraintsV1 as Proxy>::Event), DispatchError>

Parse a event for this object

fn write_request<'a>( &self, conn: &Connection, msg: <ZwpPointerConstraintsV1 as Proxy>::Request<'a>, ) -> Result<(Message<ObjectId, BorrowedFd<'a>>, Option<(&'static Interface, u32)>), InvalidId>

Serialize a request for this object

fn is_alive(&self) -> bool

Checks if the Wayland object associated with this proxy is still alive

fn downgrade(&self) -> Weak<Self>

Creates a weak handle to this object

impl Eq for ZwpPointerConstraintsV1