shell: Recalculate tiling-layer when layer-shell updates

Cargo.lock

@@ -3734,7 +3734,7 @@ checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"
 [[package]]
 name = "smithay"
 version = "0.3.0"
-source = "git+https://github.com/smithay//smithay?rev=901f64d01e#901f64d01e3dc4ed7448884b821748dbb1ab5455"
+source = "git+https://github.com/smithay//smithay?rev=b401646560#b401646560c43cc65f31a0731efe6b963c9d3e61"
 dependencies = [
  "appendlist",
  "ash",

Cargo.toml

@@ -80,4 +80,4 @@ debug = true
 lto = "fat"
 
 [patch."https://github.com/Smithay/smithay.git"]
-smithay = { git = "https://github.com/smithay//smithay", rev = "901f64d01e" }
+smithay = { git = "https://github.com/smithay//smithay", rev = "b401646560" }

src/shell/mod.rs

@@ -1394,8 +1394,13 @@ impl Shell {
             })
         };
 
-        let mut map = layer_map_for_output(&output);
-        map.map_layer(&layer_surface).unwrap();
+        {
+            let mut map = layer_map_for_output(&output);
+            map.map_layer(&layer_surface).unwrap();
+        }
+        for workspace in state.common.shell.workspaces.spaces_mut() {
+            workspace.tiling_layer.recalculate(&output);
+        }
 
         if wants_focus {
             Shell::set_focus(state, Some(&layer_surface.into()), &seat, None)

src/wayland/handlers/compositor.rs

@@ -237,12 +237,23 @@ impl CompositorHandler for State {
         self.common.shell.popups.commit(surface);
 
         // re-arrange layer-surfaces (commits may change size and positioning)
-        if let Some(output) = self.common.shell.outputs().find(|o| {
-            let map = layer_map_for_output(o);
-            map.layer_for_surface(surface, WindowSurfaceType::ALL)
-                .is_some()
-        }) {
-            layer_map_for_output(output).arrange();
+        let layer_output = self
+            .common
+            .shell
+            .outputs()
+            .find(|o| {
+                let map = layer_map_for_output(o);
+                map.layer_for_surface(surface, WindowSurfaceType::ALL)
+                    .is_some()
+            })
+            .cloned();
+        if let Some(output) = layer_output {
+            let changed = layer_map_for_output(&output).arrange();
+            if changed {
+                for workspace in self.common.shell.workspaces.spaces_mut() {
+                    workspace.tiling_layer.recalculate(&output);
+                }
+            }
         }
 
         let mut scheduled_sessions = self.schedule_workspace_sessions(surface);

src/wayland/handlers/layer_shell.rs

@@ -75,6 +75,10 @@ impl WlrLayerShellHandler for State {
                 map.unmap_layer(&layer);
             }
 
+            for workspace in self.common.shell.workspaces.spaces_mut() {
+                workspace.tiling_layer.recalculate(&output);
+            }
+
             // collect screencopy sessions needing an update
             let mut scheduled_sessions = self.schedule_workspace_sessions(surface.wl_surface());
             if let Some(sessions) = output.user_data().get::<PendingScreencopyBuffers>() {