Add xdg positioner fixup

src/deco.rs

@@ -178,10 +178,20 @@ impl Deco {
         )
     }
 
+    pub fn transform_size(&self, width: i32, height: i32) -> (i32, i32) {
+        (
+            width + self.border_size * 2,
+            height + self.top_size + self.border_size,
+        )
+    }
+
+    pub fn transform_anchor(&self, x: i32, y: i32) -> (i32, i32) {
+        (x + self.border_size, y + self.top_size)
+    }
+
     fn draw(&self) -> eyre::Result<Rc<WlBuffer>> {
         let bounds = self.bounds.borrow();
-        let width = bounds.width + 2 * self.border_size;
-        let height = bounds.height + self.top_size + self.border_size;
+        let (width, height) = self.transform_size(bounds.width, bounds.height);
         log::info!("{:?} -> {}x{}", bounds, width, height);
 
         let mut pool = self.pool.borrow_mut();