jay-compositor 1.15.0

use crate::bugs;
use crate::bugs::Bugs;
use crate::client::CAP_LAYER_SHELL;
use crate::client::Client;
use crate::client::ClientCaps;
use crate::client::LookupError;
use crate::globals::Global;
use crate::globals::GlobalName;
use crate::ifs::wl_surface::zwlr_layer_surface_v1::ZwlrLayerSurfaceV1;
use crate::ifs::wl_surface::zwlr_layer_surface_v1::ZwlrLayerSurfaceV1Error;
use crate::leaks::Tracker;
use crate::object::Version;
use crate::wire::ZwlrLayerShellV1Id;
use crate::wire::zwlr_layer_shell_v1::*;
use jay_proc::Global;
use jay_proc::Object;
use std::rc::Rc;
use thiserror::Error;

pub const BACKGROUND: u32 = 0;
pub const BOTTOM: u32 = 1;
pub const TOP: u32 = 2;
pub const OVERLAY: u32 = 3;

#[derive(Global)]
pub struct ZwlrLayerShellV1Global {
    name: GlobalName,
}

#[derive(Object)]
pub struct ZwlrLayerShellV1 {
    id: ZwlrLayerShellV1Id,
    pub client: Rc<Client>,
    pub version: Version,
    tracker: Tracker<Self>,
    pub bugs: &'static Bugs,
}

impl ZwlrLayerShellV1Global {
    pub fn new(name: GlobalName) -> Self {
        Self { name }
    }

    fn bind_(
        self: Rc<Self>,
        id: ZwlrLayerShellV1Id,
        client: &Rc<Client>,
        version: Version,
    ) -> Result<(), ZwlrLayerShellV1Error> {
        let obj = Rc::new(ZwlrLayerShellV1 {
            id,
            client: client.clone(),
            version,
            tracker: Default::default(),
            bugs: bugs::get_by_comm(&client.pid_info.comm),
        });
        track!(client, obj);
        client.add_client_obj(&obj);
        Ok(())
    }
}

impl ZwlrLayerShellV1RequestHandler for ZwlrLayerShellV1 {
    type Error = ZwlrLayerShellV1Error;

    fn get_layer_surface(
        &self,
        req: GetLayerSurface<'_>,
        slf: &Rc<Self>,
    ) -> Result<(), Self::Error> {
        let surface = self.client.lookup(req.surface)?;
        let output = 'get_output: {
            if req.output.is_some() {
                self.client.lookup(req.output)?.global.clone()
            } else {
                for seat in self.client.state.seat_queue.rev_iter() {
                    let output = seat.get_fallback_output();
                    if !output.is_dummy {
                        break 'get_output output.global.opt.clone();
                    }
                }
                let outputs = self.client.state.root.outputs.lock();
                if let Some(output) = outputs.values().next() {
                    break 'get_output output.global.opt.clone();
                }
                return Err(ZwlrLayerShellV1Error::NoOutputs);
            }
        };
        if req.layer > OVERLAY {
            return Err(ZwlrLayerShellV1Error::UnknownLayer(req.layer));
        }
        let surface = Rc::new(ZwlrLayerSurfaceV1::new(
            req.id,
            slf,
            &surface,
            &output,
            req.layer,
            req.namespace,
        ));
        track!(self.client, surface);
        self.client.add_client_obj(&surface);
        surface.install()?;
        Ok(())
    }

    fn destroy(&self, _req: Destroy, _slf: &Rc<Self>) -> Result<(), Self::Error> {
        self.client.remove_obj(self);
        Ok(())
    }
}

impl Global for ZwlrLayerShellV1Global {
    fn version(&self) -> u32 {
        5
    }

    fn required_caps(&self) -> ClientCaps {
        CAP_LAYER_SHELL
    }
}

#[derive(Debug, Error)]
pub enum ZwlrLayerShellV1Error {
    #[error(transparent)]
    Lookup(#[from] LookupError),
    #[error("Unknown layer {0}")]
    UnknownLayer(u32),
    #[error("There are no outputs")]
    NoOutputs,
    #[error(transparent)]
    ZwlrLayerSurfaceV1Error(Box<ZwlrLayerSurfaceV1Error>),
}
efrom!(ZwlrLayerShellV1Error, ZwlrLayerSurfaceV1Error);