simple_window/common/protocols_data/wayland/

wl_compositor.rs

//! the compositor singleton
//!
//! A compositor.  This object is a singleton global.  The
//! compositor is in charge of combining the contents of multiple
//! surfaces into one displayable output.

use {super::super::all_types::*, ::wl_client::builder::prelude::*};

static INTERFACE: wl_interface = wl_interface {
    name: c"wl_compositor".as_ptr(),
    version: 6,
    method_count: 2,
    methods: {
        static MESSAGES: [wl_message; 2] = [
            wl_message {
                name: c"create_surface".as_ptr(),
                signature: c"n".as_ptr(),
                types: {
                    static TYPES: [Option<&'static wl_interface>; 1] =
                        [Some(WlSurface::WL_INTERFACE)];
                    TYPES.as_ptr().cast()
                },
            },
            wl_message {
                name: c"create_region".as_ptr(),
                signature: c"n".as_ptr(),
                types: {
                    static TYPES: [Option<&'static wl_interface>; 1] =
                        [Some(WlRegion::WL_INTERFACE)];
                    TYPES.as_ptr().cast()
                },
            },
        ];
        MESSAGES.as_ptr()
    },
    event_count: 0,
    events: ptr::null(),
};

/// An owned wl_compositor proxy.
///
/// See the documentation of [the module][self] for the interface description.
#[derive(Clone, Eq, PartialEq)]
#[repr(transparent)]
pub struct WlCompositor {
    /// This proxy has the interface INTERFACE.
    proxy: UntypedOwnedProxy,
}

/// A borrowed wl_compositor proxy.
///
/// See the documentation of [the module][self] for the interface description.
#[derive(Eq, PartialEq)]
#[repr(transparent)]
pub struct WlCompositorRef {
    /// This proxy has the interface INTERFACE.
    proxy: UntypedBorrowedProxy,
}

// SAFETY: WlCompositor is a transparent wrapper around UntypedOwnedProxy
unsafe impl UntypedOwnedProxyWrapper for WlCompositor {}

// SAFETY: - INTERFACE is a valid wl_interface
//         - The only invariant is that self.proxy has a compatible interface
unsafe impl OwnedProxy for WlCompositor {
    const INTERFACE: &'static str = "wl_compositor";
    const WL_INTERFACE: &'static wl_interface = &INTERFACE;
    const NO_OP_EVENT_HANDLER: Self::NoOpEventHandler =
        private::EventHandler(private::NoOpEventHandler);
    const MAX_VERSION: u32 = 6;

    type Borrowed = WlCompositorRef;
    type Api = private::ProxyApi;
    type NoOpEventHandler = private::EventHandler<private::NoOpEventHandler>;
}

// SAFETY: WlCompositorRef is a transparent wrapper around UntypedBorrowedProxy
unsafe impl UntypedBorrowedProxyWrapper for WlCompositorRef {}

// SAFETY: - The only invariant is that self.proxy has a compatible interface
unsafe impl BorrowedProxy for WlCompositorRef {
    type Owned = WlCompositor;
}

impl Deref for WlCompositor {
    type Target = WlCompositorRef;

    fn deref(&self) -> &Self::Target {
        proxy::low_level::deref(self)
    }
}

mod private {
    pub struct ProxyApi;

    #[allow(dead_code)]
    pub struct EventHandler<H>(pub(super) H);

    #[allow(dead_code)]
    pub struct NoOpEventHandler;
}

impl Debug for WlCompositor {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        write!(f, "wl_compositor#{}", self.proxy.id())
    }
}

impl Debug for WlCompositorRef {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        write!(f, "wl_compositor#{}", self.proxy.id())
    }
}

impl PartialEq<WlCompositorRef> for WlCompositor {
    fn eq(&self, other: &WlCompositorRef) -> bool {
        self.proxy == other.proxy
    }
}

impl PartialEq<WlCompositor> for WlCompositorRef {
    fn eq(&self, other: &WlCompositor) -> bool {
        self.proxy == other.proxy
    }
}

#[allow(dead_code)]
impl WlCompositor {
    /// Since when the create_surface request is available.
    #[allow(dead_code)]
    pub const REQ__CREATE_SURFACE__SINCE: u32 = 1;

    /// create new surface
    ///
    /// Ask the compositor to create a new surface.
    #[inline]
    pub fn create_surface(&self) -> WlSurface {
        let mut args = [wl_argument { n: 0 }];
        // SAFETY: - self.proxy has the interface INTERFACE
        //         - 0 < INTERFACE.method_count = 2
        //         - the request signature is `n`
        //         - OwnedProxy::WL_INTERFACE is always a valid interface
        let data = unsafe {
            self.proxy
                .send_constructor::<false>(0, &mut args, WlSurface::WL_INTERFACE, None)
        };
        // SAFETY: data has the interface WlSurface::WL_INTERFACE
        unsafe { proxy::low_level::from_untyped_owned(data) }
    }

    /// Since when the create_region request is available.
    #[allow(dead_code)]
    pub const REQ__CREATE_REGION__SINCE: u32 = 1;

    /// create new region
    ///
    /// Ask the compositor to create a new region.
    #[inline]
    pub fn create_region(&self) -> WlRegion {
        let mut args = [wl_argument { n: 0 }];
        // SAFETY: - self.proxy has the interface INTERFACE
        //         - 1 < INTERFACE.method_count = 2
        //         - the request signature is `n`
        //         - OwnedProxy::WL_INTERFACE is always a valid interface
        let data = unsafe {
            self.proxy
                .send_constructor::<false>(1, &mut args, WlRegion::WL_INTERFACE, None)
        };
        // SAFETY: data has the interface WlRegion::WL_INTERFACE
        unsafe { proxy::low_level::from_untyped_owned(data) }
    }
}

#[allow(dead_code)]
impl WlCompositorRef {
    /// create new surface
    ///
    /// Ask the compositor to create a new surface.
    ///
    /// # Arguments
    ///
    /// - `_queue`: The queue that the returned proxy is assigned to.
    #[inline]
    pub fn create_surface(&self, _queue: &Queue) -> WlSurface {
        let mut args = [wl_argument { n: 0 }];
        // SAFETY: - self.proxy has the interface INTERFACE
        //         - 0 < INTERFACE.method_count = 2
        //         - the request signature is `n`
        //         - OwnedProxy::WL_INTERFACE is always a valid interface
        let data = unsafe {
            self.proxy
                .send_constructor(_queue, 0, &mut args, WlSurface::WL_INTERFACE, None)
        };
        // SAFETY: data has the interface WlSurface::WL_INTERFACE
        unsafe { proxy::low_level::from_untyped_owned(data) }
    }

    /// create new region
    ///
    /// Ask the compositor to create a new region.
    ///
    /// # Arguments
    ///
    /// - `_queue`: The queue that the returned proxy is assigned to.
    #[inline]
    pub fn create_region(&self, _queue: &Queue) -> WlRegion {
        let mut args = [wl_argument { n: 0 }];
        // SAFETY: - self.proxy has the interface INTERFACE
        //         - 1 < INTERFACE.method_count = 2
        //         - the request signature is `n`
        //         - OwnedProxy::WL_INTERFACE is always a valid interface
        let data = unsafe {
            self.proxy
                .send_constructor(_queue, 1, &mut args, WlRegion::WL_INTERFACE, None)
        };
        // SAFETY: data has the interface WlRegion::WL_INTERFACE
        unsafe { proxy::low_level::from_untyped_owned(data) }
    }
}

/// An event handler for [WlCompositor] proxies.
#[allow(dead_code)]
pub trait WlCompositorEventHandler {
    type Data: 'static;
}

impl WlCompositorEventHandler for private::NoOpEventHandler {
    type Data = ();
}

// SAFETY: - INTERFACE is a valid wl_interface
//         - mutable_type always returns the same value
unsafe impl<H> EventHandler for private::EventHandler<H>
where
    H: WlCompositorEventHandler,
{
    const WL_INTERFACE: &'static wl_interface = &INTERFACE;

    #[inline]
    fn mutable_type() -> Option<(TypeId, &'static str)> {
        let id = TypeId::of::<H::Data>();
        let name = std::any::type_name::<H::Data>();
        Some((id, name))
    }

    #[allow(unused_variables)]
    unsafe fn handle_event(
        &self,
        queue: &Queue,
        data: *mut u8,
        slf: &UntypedBorrowedProxy,
        opcode: u32,
        args: *mut wl_argument,
    ) {
        invalid_opcode("wl_compositor", opcode);
    }
}

impl<H> CreateEventHandler<H> for private::ProxyApi
where
    H: WlCompositorEventHandler,
{
    type EventHandler = private::EventHandler<H>;

    #[inline]
    fn create_event_handler(handler: H) -> Self::EventHandler {
        private::EventHandler(handler)
    }
}

/// Functional event handlers.
pub mod event_handlers {
    use super::*;

    impl WlCompositor {}
}