Wallpaper resize extents compositor lock timeout.

ash/wallpaper/wallpaper_controller.h

 // Copyright (c) 2012 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 ASH_WALLPAPER_WALLPAPER_CONTROLLER_H_
 #define ASH_WALLPAPER_WALLPAPER_CONTROLLER_H_
 
 #include <memory>
 
 #include "ash/ash_export.h"
 #include "ash/public/interfaces/wallpaper.mojom.h"
 #include "ash/session/session_observer.h"
 #include "ash/shell_observer.h"
 #include "ash/wm_display_observer.h"
 #include "base/memory/ref_counted.h"
 #include "base/observer_list.h"
 #include "base/timer/timer.h"
 #include "components/wallpaper/wallpaper_color_calculator_observer.h"
 #include "components/wallpaper/wallpaper_layout.h"
 #include "components/wallpaper/wallpaper_resizer_observer.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
+#include "ui/compositor/compositor_lock.h"
 #include "ui/gfx/color_analysis.h"
 #include "ui/gfx/image/image_skia.h"
 
 namespace base {
 class TaskRunner;
 }
 
 namespace wallpaper {
 class WallpaperColorCalculator;
 class WallpaperResizer;
 }
 
 namespace ash {
 
 class WallpaperControllerObserver;
 
 // Controls the desktop background wallpaper:
 //   - Sets a wallpaper image and layout;
 //   - Handles display change (add/remove display, configuration change etc);
 //   - Calculates prominent color for shelf;
 //   - Move wallpaper to locked container(s) when session state is not ACTIVE to
 //     hide the user desktop and move it to unlocked container when session
 //     state is ACTIVE;
 class ASH_EXPORT WallpaperController
     : public NON_EXPORTED_BASE(mojom::WallpaperController),
       public WmDisplayObserver,
       public ShellObserver,
       public wallpaper::WallpaperResizerObserver,
       public wallpaper::WallpaperColorCalculatorObserver,
-      public SessionObserver {
+      public SessionObserver,
+      NON_EXPORTED_BASE(public ui::CompositorLockClient) {
  public:
   enum WallpaperMode { WALLPAPER_NONE, WALLPAPER_IMAGE };
 
   // The value assigned to |prominent_color_| if extraction fails or the feature
   // is disabled (e.g. command line, lock/login screens).
   static constexpr SkColor kInvalidColor = SK_ColorTRANSPARENT;
 
   explicit WallpaperController(
       const scoped_refptr<base::TaskRunner>& task_runner);
   ~WallpaperController() override;
@@ skipping 104 matching lines @@
   bool ShouldCalculateColors() const;
 
   // Move all wallpaper widgets to the locked container.
   // Returns true if the wallpaper moved.
   bool MoveToLockedContainer();
 
   // Move all wallpaper widgets to unlocked container.
   // Returns true if the wallpaper moved.
   bool MoveToUnlockedContainer();
 
+  // When wallpaper resizes, we can check which displays will
+  // be affected. For simplicity, we only lock the compositor for the internal
+  // display.
+  void GetInternalDisplayCompositorLock();
+  // CompositorLockClient:
+  void CompositorLockTimedOut() override;
+
   bool locked_;
 
   WallpaperMode wallpaper_mode_;
 
   // Wallpaper picker interface in chrome browser, used to open the picker.
   mojom::WallpaperPickerPtr wallpaper_picker_;
 
   // Bindings for the WallpaperController interface.
   mojo::BindingSet<mojom::WallpaperController> bindings_;
 
@@ skipping 11 matching lines @@
   gfx::Size current_max_display_size_;
 
   base::OneShotTimer timer_;
 
   int wallpaper_reload_delay_;
 
   scoped_refptr<base::TaskRunner> task_runner_;
 
   ScopedSessionObserver scoped_session_observer_;
 
+  std::unique_ptr<ui::CompositorLock> compositor_lock_;
+
   DISALLOW_COPY_AND_ASSIGN(WallpaperController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WALLPAPER_WALLPAPER_CONTROLLER_H_