Snap widgets to pixel boundary on ash

ash/wm/dock/docked_window_layout_manager.h

 // Copyright (c) 2013 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_WM_DOCK_DOCKED_WINDOW_LAYOUT_MANAGER_H_
 #define ASH_WM_DOCK_DOCKED_WINDOW_LAYOUT_MANAGER_H_
 
 #include "ash/ash_export.h"
 #include "ash/shelf/shelf_layout_manager_observer.h"
 #include "ash/shell_observer.h"
+#include "ash/snap_to_pixel_layout_manager.h"
 #include "ash/wm/dock/dock_types.h"
 #include "ash/wm/dock/docked_window_layout_manager_observer.h"
 #include "ash/wm/window_state_observer.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/time/time.h"
-#include "ui/aura/layout_manager.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_observer.h"
 #include "ui/gfx/rect.h"
 #include "ui/keyboard/keyboard_controller_observer.h"
 #include "ui/wm/public/activation_change_observer.h"
 
 namespace aura {
 class Window;
 }
 
@@ skipping 29 matching lines @@
 // windows added to that container.
 //
 // The constructor takes a |dock_container| argument which is expected to set
 // its layout manager to this instance, e.g.:
 // dock_container->SetLayoutManager(
 //     new DockedWindowLayoutManager(dock_container));
 //
 // TODO(varkha): extend BaseLayoutManager instead of LayoutManager to inherit
 // common functionality.
 class ASH_EXPORT DockedWindowLayoutManager
-    : public aura::LayoutManager,
+    : public SnapToPixelLayoutManager,
       public ash::ShellObserver,
       public aura::WindowObserver,
       public aura::client::ActivationChangeObserver,
       public keyboard::KeyboardControllerObserver,
       public ShelfLayoutManagerObserver,
       public wm::WindowStateObserver {
  public:
   // Maximum width of the docked windows area.
   static const int kMaxDockWidth;
 
@@ skipping 46 matching lines @@
 
   // Returns last known coordinates of |dragged_window_| after Relayout.
   const gfx::Rect dragged_bounds() const { return dragged_bounds_;}
 
   // Returns true if currently dragged window is docked at the screen edge.
   bool is_dragged_window_docked() const { return is_dragged_window_docked_; }
 
   // Updates docked layout when shelf bounds change.
   void OnShelfBoundsChanged();
 
-  // aura::LayoutManager:
+  // SnapLayoutManager:
   virtual void OnWindowResized() OVERRIDE;
   virtual void OnWindowAddedToLayout(aura::Window* child) OVERRIDE;
   virtual void OnWillRemoveWindowFromLayout(aura::Window* child) OVERRIDE {}
   virtual void OnWindowRemovedFromLayout(aura::Window* child) OVERRIDE;
   virtual void OnChildWindowVisibilityChanged(aura::Window* child,
                                               bool visibile) OVERRIDE;
   virtual void SetChildBounds(aura::Window* child,
                               const gfx::Rect& requested_bounds) OVERRIDE;
 
   // ash::ShellObserver:
@@ skipping 155 matching lines @@
 
   // Observers of dock bounds changes.
   ObserverList<DockedWindowLayoutManagerObserver> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(DockedWindowLayoutManager);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_DOCK_DOCKED_WINDOW_LAYOUT_MANAGER_H_