1 files changed, 15 insertions, 1 deletions

diff --git a/src/ui/workspace.h b/src/ui/workspace.h
index 134d517..804d5a8 100644
--- a/src/ui/workspace.h
+++ b/src/ui/workspace.h
@@ -7,12 +7,26 @@ namespace Donut
 {
     class Scene;
 
+    // App-level actions a workspace can request (window/device changes it can't do
+    // itself). The Application implements this — it owns the window and device.
+    struct AppActions
+    {
+        virtual ~AppActions() = default;
+        virtual auto set_resolution(int w, int h) -> void = 0;
+        virtual auto set_fullscreen(bool on) -> void = 0;
+        virtual auto set_vsync(bool on) -> void = 0;
+        virtual auto set_ui_scale(float scale) -> void = 0;
+        virtual auto get_window_size(int& w, int& h) const -> void = 0;
+        virtual auto is_fullscreen() const -> bool = 0;
+    };
+
     // What a workspace gets each frame to build its panels. `scene` is mutable —
-    // workspaces edit the document through it.
+    // workspaces edit the document through it; `actions` performs app-level changes.
     struct UIContext
     {
         Scene&      scene;
         std::string device_name;
+        AppActions& actions;
     };
 
     // A Dorico-style workspace: one tab that owns its side panels and declares