wayland: implement fifo-v1

src/ifs/wl_surface/wp_fifo_v1.rs

@@ -0,0 +1,77 @@
+use {
+    crate::{
+        client::{Client, ClientError},
+        ifs::wl_surface::WlSurface,
+        leaks::Tracker,
+        object::{Object, Version},
+        wire::{wp_fifo_v1::*, WpFifoV1Id},
+    },
+    std::rc::Rc,
+    thiserror::Error,
+};
+
+pub struct WpFifoV1 {
+    pub id: WpFifoV1Id,
+    pub client: Rc<Client>,
+    pub surface: Rc<WlSurface>,
+    pub tracker: Tracker<Self>,
+    pub version: Version,
+}
+
+impl WpFifoV1 {
+    pub fn new(id: WpFifoV1Id, version: Version, surface: &Rc<WlSurface>) -> Self {
+        Self {
+            id,
+            client: surface.client.clone(),
+            surface: surface.clone(),
+            tracker: Default::default(),
+            version,
+        }
+    }
+
+    pub fn install(self: &Rc<Self>) -> Result<(), WpFifoV1Error> {
+        if self.surface.fifo.is_some() {
+            return Err(WpFifoV1Error::Exists);
+        }
+        self.surface.fifo.set(Some(self.clone()));
+        Ok(())
+    }
+}
+
+impl WpFifoV1RequestHandler for WpFifoV1 {
+    type Error = WpFifoV1Error;
+
+    fn set_barrier(&self, _req: SetBarrier, _slf: &Rc<Self>) -> Result<(), Self::Error> {
+        self.surface.pending.borrow_mut().fifo_barrier_set = true;
+        Ok(())
+    }
+
+    fn wait_barrier(&self, _req: WaitBarrier, _slf: &Rc<Self>) -> Result<(), Self::Error> {
+        self.surface.pending.borrow_mut().fifo_barrier_wait = true;
+        Ok(())
+    }
+
+    fn destroy(&self, _req: Destroy, _slf: &Rc<Self>) -> Result<(), Self::Error> {
+        self.surface.fifo.take();
+        self.client.remove_obj(self)?;
+        Ok(())
+    }
+}
+
+object_base! {
+    self = WpFifoV1;
+    version = self.version;
+}
+
+impl Object for WpFifoV1 {}
+
+simple_add_obj!(WpFifoV1);
+
+#[derive(Debug, Error)]
+pub enum WpFifoV1Error {
+    #[error(transparent)]
+    ClientError(Box<ClientError>),
+    #[error("The surface already has a fifo extension attached")]
+    Exists,
+}
+efrom!(WpFifoV1Error, ClientError);