Sets the background color of shelf is opaque black when maximized (2nd)

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"
 #include "ash/launcher/launcher.h"
 #include "ash/shelf/background_animator.h"
 #include "ash/shelf/shelf_types.h"
 #include "ash/shell_observer.h"
 #include "ash/system/status_area_widget.h"
+#include "ash/wm/workspace/workspace_types.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/observer_list.h"
 #include "base/timer/timer.h"
 #include "ui/aura/client/activation_change_observer.h"
 #include "ui/aura/layout_manager.h"
 #include "ui/gfx/insets.h"
 #include "ui/gfx/rect.h"
 #include "ui/keyboard/keyboard_controller.h"
@@ skipping 60 matching lines @@
   // returns false.
   bool SetAlignment(ShelfAlignment alignment);
   ShelfAlignment GetAlignment() const { return alignment_; }
 
   void set_workspace_controller(WorkspaceController* controller) {
     workspace_controller_ = controller;
   }
 
   bool in_layout() const { return in_layout_; }
 
+  // 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();
 
   // Stops any animations and sets the bounds of the launcher and status
   // widgets.
   void LayoutShelf();
@@ skipping 104 matching lines @@
     float status_opacity;
     gfx::Rect shelf_bounds_in_root;
     gfx::Rect launcher_bounds_in_shelf;
     gfx::Rect status_bounds_in_shelf;
     gfx::Insets work_area_insets;
   };
 
   struct State {
     State() : visibility_state(SHELF_VISIBLE),
               auto_hide_state(SHELF_AUTO_HIDE_HIDDEN),
+              window_state(WORKSPACE_WINDOW_STATE_DEFAULT),
               is_screen_locked(false) {}
 
     // Returns true if the two states are considered equal. As
     // |auto_hide_state| only matters if |visibility_state| is
     // |SHELF_AUTO_HIDE|, Equals() ignores the |auto_hide_state| as
     // appropriate.
     bool Equals(const State& other) const {
       return other.visibility_state == visibility_state &&
           (visibility_state != SHELF_AUTO_HIDE ||
            other.auto_hide_state == auto_hide_state) &&
+          other.window_state == window_state &&
           other.is_screen_locked == is_screen_locked;
     }
 
     ShelfVisibilityState visibility_state;
     ShelfAutoHideState auto_hide_state;
+    WorkspaceWindowState window_state;
     bool is_screen_locked;
   };
 
   // Sets the visibility of the shelf to |state|.
   void SetState(ShelfVisibilityState visibility_state);
 
   // Stops any animations and progresses them to the end.
   void StopAnimating();
 
   // Returns the width (if aligned to the side) or height (if aligned to the
   // bottom).
   void GetShelfSize(int* width, int* height);
 
   // Insets |bounds| by |inset| on the edge the shelf is aligned to.
   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);
 
-  // Returns whether the launcher should draw a background.
-  bool GetLauncherPaintsBackground() const;
+  // Returns how the shelf background is painted.
+  ShelfBackgroundType GetShelfBackgroundType() const;
 
   // Updates the auto hide state immediately.
   void UpdateAutoHideStateNow();
 
   // Returns the AutoHideState. This value is determined from the launcher and
   // tray.
   ShelfAutoHideState CalculateAutoHideState(
       ShelfVisibilityState visibility_state) const;
 
   // Updates the hit test bounds override for launcher and status area.
@@ skipping 74 matching lines @@
   // The bounds of the keyboard.
   gfx::Rect keyboard_bounds_;
 
   DISALLOW_COPY_AND_ASSIGN(ShelfLayoutManager);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_LAYOUT_MANAGER_H_