wayland: add a generic wayland client

src/wl_usr/usr_ifs/usr_wp_viewporter.rs

@@ -0,0 +1,42 @@
+use {
+    crate::{
+        wire::{wp_viewporter::*, WpViewporterId},
+        wl_usr::{
+            usr_ifs::{usr_wl_surface::UsrWlSurface, usr_wp_viewport::UsrWpViewport},
+            usr_object::UsrObject,
+            UsrCon,
+        },
+    },
+    std::rc::Rc,
+};
+
+pub struct UsrWpViewporter {
+    pub id: WpViewporterId,
+    pub con: Rc<UsrCon>,
+}
+
+impl UsrWpViewporter {
+    pub fn get_viewport(&self, surface: &UsrWlSurface) -> Rc<UsrWpViewport> {
+        let wv = Rc::new(UsrWpViewport {
+            id: self.con.id(),
+            con: self.con.clone(),
+        });
+        self.con.add_object(wv.clone());
+        self.con.request(GetViewport {
+            self_id: self.id,
+            id: wv.id,
+            surface: surface.id,
+        });
+        wv
+    }
+}
+
+usr_object_base! {
+    UsrWpViewporter, WpViewporter;
+}
+
+impl UsrObject for UsrWpViewporter {
+    fn destroy(&self) {
+        self.con.request(Destroy { self_id: self.id });
+    }
+}