Split cursor location from UserDisplayManager.

services/ui/ws/user_display_manager.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef SERVICES_UI_WS_USER_DISPLAY_MANAGER_H_
 #define SERVICES_UI_WS_USER_DISPLAY_MANAGER_H_
 
 #include <set>
+#include <vector>
 
-#include "base/atomicops.h"
 #include "base/macros.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
 #include "mojo/public/cpp/bindings/interface_ptr_set.h"
 #include "services/ui/public/interfaces/display_manager.mojom.h"
 #include "services/ui/ws/user_id.h"
 
-namespace gfx {
-class Point;
-}
-
 namespace ui {
 namespace ws {
 
 class Display;
 class DisplayManager;
 class UserDisplayManagerDelegate;
 
 // Provides per user display state.
 class UserDisplayManager : public mojom::DisplayManager {
  public:
@@ skipping 10 matching lines @@
 
   // Called when something about the display (e.g. pixel-ratio, size) changes.
   void OnDisplayUpdate(Display* display);
 
   // Called by Display prior to |display| being removed and destroyed.
   void OnWillDestroyDisplay(Display* display);
 
   // Called when the primary display changes.
   void OnPrimaryDisplayChanged(int64_t primary_display_id);
 
-  // Called from WindowManagerState when its EventDispatcher receives a mouse
-  // event.
-  void OnMouseCursorLocationChanged(const gfx::Point& point);
-
-  // Returns a read-only handle to the shared memory which contains the global
-  // mouse cursor position. Each call returns a new handle.
-  mojo::ScopedSharedBufferHandle GetCursorLocationMemory();
-
   // Overriden from mojom::DisplayManager:
   void AddObserver(mojom::DisplayManagerObserverPtr observer) override;
 
  private:
   // Called when a new observer is added. If frame decorations are available
   // notifies the observer immediately.
   void OnObserverAdded(mojom::DisplayManagerObserver* observer);
 
   // Fills in a WsDisplayPtr for |display|.
   mojom::WsDisplayPtr GetWsDisplayPtr(const Display& display);
 
   std::vector<mojom::WsDisplayPtr> GetAllDisplays();
 
   // Calls OnDisplays() on |observer|.
   void CallOnDisplays(mojom::DisplayManagerObserver* observer);
 
-  base::subtle::Atomic32* cursor_location_memory() {
-    return reinterpret_cast<base::subtle::Atomic32*>(
-        cursor_location_mapping_.get());
-  }
-
   ws::DisplayManager* display_manager_;
 
   UserDisplayManagerDelegate* delegate_;
 
   const UserId user_id_;
 
   // Set to true the first time at least one Display has valid frame values.
   bool got_valid_frame_decorations_;
 
   mojo::BindingSet<mojom::DisplayManager> display_manager_bindings_;
 
   // WARNING: only use these once |got_valid_frame_decorations_| is true.
   mojo::InterfacePtrSet<mojom::DisplayManagerObserver>
       display_manager_observers_;
 
-  // The current location of the cursor. This is always kept up to date so we
-  // can atomically write this to |cursor_location_memory()| once it is created.
-  base::subtle::Atomic32 current_cursor_location_;
-
-  // A handle to a shared memory buffer that is one 64 bit integer long. We
-  // share this with any client as the same user. This buffer is lazily
-  // created on the first access.
-  mojo::ScopedSharedBufferHandle cursor_location_handle_;
-
-  // The one int32 in |cursor_location_handle_|. When we write to this
-  // location, we must always write to it atomically. (On the other side of the
-  // mojo connection, this data must be read atomically.)
-  mojo::ScopedSharedBufferMapping cursor_location_mapping_;
-
   DISALLOW_COPY_AND_ASSIGN(UserDisplayManager);
 };
 
 }  // namespace ws
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_USER_DISPLAY_MANAGER_H_