autocommit 2022-02-21 23:21:13 CET

src/ifs/zwlr_layer_shell_v1.rs

@@ -0,0 +1,176 @@
+use crate::client::{Client, ClientError};
+use crate::globals::{Global, GlobalName};
+use crate::ifs::wl_surface::zwlr_layer_surface_v1::{ZwlrLayerSurfaceV1, ZwlrLayerSurfaceV1Error};
+use crate::leaks::Tracker;
+use crate::object::Object;
+use crate::utils::buffd::MsgParser;
+use crate::utils::buffd::MsgParserError;
+use crate::wire::zwlr_layer_shell_v1::*;
+use crate::wire::ZwlrLayerShellV1Id;
+use std::rc::Rc;
+use thiserror::Error;
+
+#[allow(dead_code)]
+pub const BACKGROUND: u32 = 0;
+#[allow(dead_code)]
+pub const BOTTOM: u32 = 1;
+#[allow(dead_code)]
+pub const TOP: u32 = 2;
+pub const OVERLAY: u32 = 3;
+
+pub struct ZwlrLayerShellV1Global {
+    name: GlobalName,
+}
+
+pub struct ZwlrLayerShellV1 {
+    pub id: ZwlrLayerShellV1Id,
+    pub client: Rc<Client>,
+    pub version: u32,
+    pub tracker: Tracker<Self>,
+}
+
+impl ZwlrLayerShellV1Global {
+    pub fn new(name: GlobalName) -> Self {
+        Self { name }
+    }
+
+    fn bind_(
+        self: Rc<Self>,
+        id: ZwlrLayerShellV1Id,
+        client: &Rc<Client>,
+        version: u32,
+    ) -> Result<(), ZwlrLayerShellV1Error> {
+        let obj = Rc::new(ZwlrLayerShellV1 {
+            id,
+            client: client.clone(),
+            version,
+            tracker: Default::default(),
+        });
+        track!(client, obj);
+        client.add_client_obj(&obj)?;
+        Ok(())
+    }
+}
+
+impl ZwlrLayerShellV1 {
+    fn destroy(&self, parser: MsgParser<'_, '_>) -> Result<(), DestroyError> {
+        let _req: Destroy = self.client.parse(self, parser)?;
+        self.client.remove_obj(self)?;
+        Ok(())
+    }
+
+    fn get_layer_surface(
+        self: &Rc<Self>,
+        parser: MsgParser<'_, '_>,
+    ) -> Result<(), GetLayerSurfaceError> {
+        let req: GetLayerSurface = self.client.parse(&**self, parser)?;
+        let surface = self.client.lookup(req.surface)?;
+        let output = 'get_output: {
+            if req.output.is_some() {
+                self.client.lookup(req.output)?.global.node.get().unwrap()
+            } else {
+                for seat in self.client.state.seat_queue.rev_iter() {
+                    if let Some(output) = seat.get_output() {
+                        break 'get_output output.node.get().unwrap();
+                    }
+                }
+                let outputs = self.client.state.outputs.lock();
+                match outputs.values().next() {
+                    Some(ou) => ou.node.get().unwrap(),
+                    _ => return Err(GetLayerSurfaceError::NoOutputs),
+                }
+            }
+        };
+        if req.layer > OVERLAY {
+            return Err(GetLayerSurfaceError::UnknownLayer(req.layer));
+        }
+        let surface = Rc::new(ZwlrLayerSurfaceV1::new(
+            req.id,
+            self,
+            &surface,
+            &output,
+            req.layer,
+            req.namespace,
+        ));
+        track!(self.client, surface);
+        self.client.add_client_obj(&surface)?;
+        surface.install()?;
+        Ok(())
+    }
+}
+
+global_base!(
+    ZwlrLayerShellV1Global,
+    ZwlrLayerShellV1,
+    ZwlrLayerShellV1Error
+);
+
+impl Global for ZwlrLayerShellV1Global {
+    fn singleton(&self) -> bool {
+        true
+    }
+
+    fn version(&self) -> u32 {
+        4
+    }
+}
+
+simple_add_global!(ZwlrLayerShellV1Global);
+
+object_base! {
+    ZwlrLayerShellV1, ZwlrLayerShellV1Error;
+
+    GET_LAYER_SURFACE => get_layer_surface,
+    DESTROY => destroy,
+}
+
+simple_add_obj!(ZwlrLayerShellV1);
+
+impl Object for ZwlrLayerShellV1 {
+    fn num_requests(&self) -> u32 {
+        let last_request = if self.version >= 3 {
+            DESTROY
+        } else {
+            GET_LAYER_SURFACE
+        };
+        last_request + 1
+    }
+}
+
+#[derive(Debug, Error)]
+pub enum ZwlrLayerShellV1Error {
+    #[error(transparent)]
+    ClientError(Box<ClientError>),
+    #[error("Could not process a `destroy` request")]
+    DestroyError(#[from] DestroyError),
+    #[error("Could not process a `get_layer_surface` request")]
+    GetLayerSurfaceError(#[from] GetLayerSurfaceError),
+}
+efrom!(ZwlrLayerShellV1Error, ClientError);
+
+#[derive(Debug, Error)]
+pub enum DestroyError {
+    #[error("Parsing failed")]
+    ParseError(#[source] Box<MsgParserError>),
+    #[error(transparent)]
+    ClientError(Box<ClientError>),
+}
+efrom!(DestroyError, ParseError, MsgParserError);
+efrom!(DestroyError, ClientError);
+
+#[derive(Debug, Error)]
+pub enum GetLayerSurfaceError {
+    #[error("Parsing failed")]
+    ParseError(#[source] Box<MsgParserError>),
+    #[error(transparent)]
+    ClientError(Box<ClientError>),
+    #[error("Unknown layer {0}")]
+    UnknownLayer(u32),
+    #[error("There are no outputs")]
+    NoOutputs,
+    #[error(transparent)]
+    ZwlrLayerSurfaceV1Error(Box<ZwlrLayerSurfaceV1Error>),
+}
+efrom!(GetLayerSurfaceError, ParseError, MsgParserError);
+efrom!(GetLayerSurfaceError, ClientError);
+efrom!(GetLayerSurfaceError, ZwlrLayerSurfaceV1Error);