Struct wayland_server::NewResource

pub struct NewResource<I: Interface> { /* fields omitted */ }

A newly-created resource that needs implementation

Whenever a new wayland object is created, you will receive it as a NewResource. You then have to provide an implementation for it, in order to process the incoming events it may receive. Once this done you will be able to use it as a regular Rust object.

Implementations are structs implementing the appropriate variant of the Implementation trait. They can also be closures.

Methods

impl<I: Interface + 'static> NewResource<I>

pub fn implement<T, Dest, UD>(
    self,
    handler: T,
    destructor: Option<Dest>,
    user_data: UD
) -> I where
    T: 'static,
    Dest: FnMut(I) + 'static,
    UD: 'static,
    I: HandledBy<T> + From<Resource<I>>,
    I::Request: MessageGroup<Map = ResourceMap>, 

Implement this resource using a handler, destructor and user data.

The handler is a struct implementing the RequestHandler trait for the corresponding interface.

This must be called from the thread hosting the wayland event loop, otherwise it will panic.

pub fn implement_closure<F, Dest, UD>(
    self,
    implementation: F,
    destructor: Option<Dest>,
    user_data: UD
) -> I where
    F: FnMut(I::Request, I) + 'static,
    Dest: FnMut(I) + 'static,
    UD: 'static,
    I: From<Resource<I>>,
    I::Request: MessageGroup<Map = ResourceMap>, 

Implement this resource using given function, destructor, and user data.

This must be called from the thread hosting the wayland event loop, otherwise it will panic.

pub fn implement_dummy(self) -> I where
    I: From<Resource<I>>,
    I::Request: MessageGroup<Map = ResourceMap>, 

Implement this resource using a dummy handler which does nothing.

pub fn implement_threadsafe<T, Dest, UD>(
    self,
    handler: T,
    destructor: Option<Dest>,
    user_data: UD
) -> I where
    T: Send + 'static,
    Dest: FnMut(I) + Send + 'static,
    UD: Send + Sync + 'static,
    I: HandledBy<T> + From<Resource<I>>,
    I::Request: MessageGroup<Map = ResourceMap>, 

Implement this resource using a handler, destructor and user data.

The handler is a struct implementing the RequestHandler trait for the corresponding interface.

This method allows you to implement from any thread with the constraint that the implementation and user-data must be threadsafe.

pub fn implement_closure_threadsafe<F, Dest, UD>(
    self,
    implementation: F,
    destructor: Option<Dest>,
    user_data: UD
) -> I where
    F: FnMut(I::Request, I) + Send + 'static,
    Dest: FnMut(I) + Send + 'static,
    UD: Send + Sync + 'static,
    I: From<Resource<I>>,
    I::Request: MessageGroup<Map = ResourceMap>, 

Implement this resource using given function, destructor, and user data.

This method allows you to implement from any thread with the constraint that the implementation and user-data must be threadsafe.

impl<I: Interface> NewResource<I>

pub fn c_ptr(&self) -> *mut wl_resource

Get a raw pointer to the underlying wayland object

Retrieve a pointer to the object from the libwayland-server.so library. You will mostly need it to interface with C libraries needing access to wayland objects.

Use this if you need to pass an unimplemented object to the C library you are interfacing with.

NOTE: This method will panic if called while the native_lib feature is not activated

pub unsafe fn from_c_ptr(_ptr: *mut wl_resource) -> Self

Create a NewResource instance from a C pointer.

By doing so, you assert that this wayland object was newly created and can be safely implemented. As implementing it will overwrite any previously associated data or implementation, this can cause weird errors akin to memory corruption if it was not the case.

NOTE: This method will panic if called while the native_lib feature is not activated