wayland: add a generic wayland client

src/wl_usr/usr_ifs/usr_wlr_layer_surface.rs

@@ -0,0 +1,86 @@
+use {
+    crate::{
+        utils::{
+            buffd::{MsgParser, MsgParserError},
+            clonecell::CloneCell,
+        },
+        wire::{zwlr_layer_surface_v1::*, ZwlrLayerSurfaceV1Id},
+        wl_usr::{usr_object::UsrObject, UsrCon},
+    },
+    std::rc::Rc,
+};
+
+pub struct UsrWlrLayerSurface {
+    pub id: ZwlrLayerSurfaceV1Id,
+    pub con: Rc<UsrCon>,
+    pub owner: CloneCell<Option<Rc<dyn UsrWlrLayerSurfaceOwner>>>,
+}
+
+pub trait UsrWlrLayerSurfaceOwner {
+    fn configure(&self, ev: &Configure) {
+        let _ = ev;
+    }
+
+    fn closed(&self) {}
+}
+
+impl UsrWlrLayerSurface {
+    pub fn set_size(&self, width: i32, height: i32) {
+        self.con.request(SetSize {
+            self_id: self.id,
+            width: width as _,
+            height: height as _,
+        });
+    }
+
+    pub fn set_keyboard_interactivity(&self, ki: u32) {
+        self.con.request(SetKeyboardInteractivity {
+            self_id: self.id,
+            keyboard_interactivity: ki,
+        });
+    }
+
+    pub fn set_layer(&self, layer: u32) {
+        self.con.request(SetLayer {
+            self_id: self.id,
+            layer,
+        });
+    }
+
+    fn configure(&self, parser: MsgParser<'_, '_>) -> Result<(), MsgParserError> {
+        let ev: Configure = self.con.parse(self, parser)?;
+        if let Some(owner) = self.owner.get() {
+            owner.configure(&ev);
+        }
+        self.con.request(AckConfigure {
+            self_id: self.id,
+            serial: ev.serial,
+        });
+        Ok(())
+    }
+
+    fn closed(&self, parser: MsgParser<'_, '_>) -> Result<(), MsgParserError> {
+        let _ev: Closed = self.con.parse(self, parser)?;
+        if let Some(owner) = self.owner.get() {
+            owner.closed();
+        }
+        Ok(())
+    }
+}
+
+usr_object_base! {
+    UsrWlrLayerSurface, ZwlrLayerSurfaceV1;
+
+    CONFIGURE => configure,
+    CLOSED => closed,
+}
+
+impl UsrObject for UsrWlrLayerSurface {
+    fn destroy(&self) {
+        self.con.request(Destroy { self_id: self.id });
+    }
+
+    fn break_loops(&self) {
+        self.owner.take();
+    }
+}