Animating docked background in sync with shelf

ash/shelf/shelf_layout_manager.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_SHELF_SHELF_LAYOUT_MANAGER_H_
 #define ASH_SHELF_SHELF_LAYOUT_MANAGER_H_
 
 #include <vector>
 
 #include "ash/ash_export.h"
@@ skipping 104 matching lines @@
   // Clears internal data for shutdown process.
   void PrepareForShutdown();
 
   // Returns whether the shelf and its contents (launcher, status) are visible
   // on the screen.
   bool IsVisible() const;
 
   // Returns the ideal bounds of the shelf assuming it is visible.
   gfx::Rect GetIdealBounds();
 
+  // Returns the docked area bounds.
+  const gfx::Rect& dock_bounds() const { return dock_bounds_; }
+
   // Stops any animations and sets the bounds of the launcher and status
   // widgets.
   void LayoutShelf();
 
   // Returns shelf visibility state based on current value of auto hide
   // behavior setting.
   ShelfVisibilityState CalculateShelfVisibility();
 
   // Updates the visibility state.
   void UpdateVisibilityState();
@@ skipping 150 matching lines @@
   void AdjustBoundsBasedOnAlignment(int inset, gfx::Rect* bounds) const;
 
   // Calculates the target bounds assuming visibility of |visible|.
   void CalculateTargetBounds(const State& state, TargetBounds* target_bounds);
 
   // Updates the target bounds if a gesture-drag is in progress. This is only
   // used by |CalculateTargetBounds()|.
   void UpdateTargetBoundsForGesture(TargetBounds* target_bounds) const;
 
   // Updates the background of the shelf.
-  void UpdateShelfBackground(BackgroundAnimator::ChangeType type);
+  void UpdateShelfBackground(BackgroundAnimatorChangeType type);
 
   // Returns how the shelf background is painted.
   ShelfBackgroundType GetShelfBackgroundType() const;
 
   // Updates the auto hide state immediately.
   void UpdateAutoHideStateNow();
 
   // Stops the auto hide timer and clears
   // |mouse_over_shelf_when_auto_hide_timer_started_|.
   void StopAutoHideTimer();
@@ skipping 18 matching lines @@
   int GetWorkAreaSize(const State& state, int size) const;
 
   // Return the bounds available in the parent, taking into account the bounds
   // of the keyboard if necessary.
   gfx::Rect GetAvailableBounds() const;
 
   // Overridden from keyboard::KeyboardControllerObserver:
   virtual void OnKeyboardBoundsChanging(
       const gfx::Rect& keyboard_bounds) OVERRIDE;
 
-  // Overridden from dock::DockObserver:
+  // Overridden from DockedWindowLayoutManagerObserver:
   virtual void OnDockBoundsChanging(
       const gfx::Rect& dock_bounds,
       DockedWindowLayoutManagerObserver::Reason reason) OVERRIDE;
 
   // Generates insets for inward edge based on the current shelf alignment.
   gfx::Insets GetInsetsForAlignment(int distance) const;
 
   // The RootWindow is cached so that we don't invoke Shell::GetInstance() from
   // our destructor. We avoid that as at the time we're deleted Shell is being
   // deleted too.
@@ skipping 62 matching lines @@
   // The bounds of the dock.
   gfx::Rect dock_bounds_;
 
   DISALLOW_COPY_AND_ASSIGN(ShelfLayoutManager);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_LAYOUT_MANAGER_H_