Move mus to //services/ui

components/mus/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 COMPONENTS_MUS_WS_USER_DISPLAY_MANAGER_H_
-#define COMPONENTS_MUS_WS_USER_DISPLAY_MANAGER_H_
-
-#include <set>
-
-#include "base/atomicops.h"
-#include "base/macros.h"
-#include "components/mus/public/interfaces/display.mojom.h"
-#include "components/mus/ws/user_id.h"
-#include "mojo/public/cpp/bindings/binding_set.h"
-#include "mojo/public/cpp/bindings/interface_ptr_set.h"
-
-namespace gfx {
-class Point;
-}
-
-namespace mus {
-namespace ws {
-
-class Display;
-class DisplayManager;
-class DisplayManagerDelegate;
-
-namespace test {
-class UserDisplayManagerTestApi;
-}
-
-// Provides per user display state.
-class UserDisplayManager : public mojom::DisplayManager {
- public:
-  UserDisplayManager(ws::DisplayManager* display_manager,
-                     DisplayManagerDelegate* delegate,
-                     const UserId& user_id);
-  ~UserDisplayManager() override;
-
-  // Called when the frame decorations for this user change.
-  void OnFrameDecorationValuesChanged();
-
-  void AddDisplayManagerBinding(
-      mojo::InterfaceRequest<mojom::DisplayManager> request);
-
-  // Called by Display prior to |display| being removed and destroyed.
-  void OnWillDestroyDisplay(Display* display);
-
-  // Called from WindowManagerState when its EventDispatcher receives a mouse
-  // event.
-  void OnMouseCursorLocationChanged(const gfx::Point& point);
-
-  // Called when something about the display (e.g. pixel-ratio, size) changes.
-  void OnDisplayUpdate(Display* display);
-
-  // 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();
-
- private:
-  friend class test::UserDisplayManagerTestApi;
-
-  // Called when a new observer is added. If frame decorations are available
-  // notifies the observer immediately.
-  void OnObserverAdded(mojom::DisplayManagerObserver* observer);
-
-  mojo::Array<mojom::DisplayPtr> GetAllDisplays();
-
-  // Calls OnDisplays() on |observer|.
-  void CallOnDisplays(mojom::DisplayManagerObserver* observer);
-
-  // Overriden from mojom::DisplayManager:
-  void AddObserver(mojom::DisplayManagerObserverPtr observer) override;
-
-  base::subtle::Atomic32* cursor_location_memory() {
-    return reinterpret_cast<base::subtle::Atomic32*>(
-        cursor_location_mapping_.get());
-  }
-
-  ws::DisplayManager* display_manager_;
-
-  DisplayManagerDelegate* 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_;
-
-  // Observer used for tests.
-  mojom::DisplayManagerObserver* test_observer_ = nullptr;
-
-  // 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 mus
-
-#endif  // COMPONENTS_MUS_WS_USER_DISPLAY_MANAGER_H_