Snap widgets to pixel boundary on ash

ash/wm/status_area_layout_manager.cc

 // 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.
 
 #include "ash/wm/status_area_layout_manager.h"
 
 #include "ash/shelf/shelf_layout_manager.h"
 #include "ash/shelf/shelf_widget.h"
 #include "ash/system/status_area_widget.h"
 #include "base/auto_reset.h"
 #include "ui/aura/window.h"
 #include "ui/views/widget/widget.h"
 
 namespace ash {
 
 ////////////////////////////////////////////////////////////////////////////////
 // StatusAreaLayoutManager, public:
 
-StatusAreaLayoutManager::StatusAreaLayoutManager(ShelfWidget* shelf)
-    : in_layout_(false),
-      shelf_(shelf) {
+StatusAreaLayoutManager::StatusAreaLayoutManager(aura::Window* container,
+                                                 ShelfWidget* shelf)
+    : SnapToPixelLayoutManager(container), in_layout_(false), shelf_(shelf) {
 }
 
 StatusAreaLayoutManager::~StatusAreaLayoutManager() {
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // StatusAreaLayoutManager, aura::LayoutManager implementation:
 
 void StatusAreaLayoutManager::OnWindowResized() {
   LayoutStatusArea();
 }
 
-void StatusAreaLayoutManager::OnWindowAddedToLayout(aura::Window* child) {
-}
-
-void StatusAreaLayoutManager::OnWillRemoveWindowFromLayout(
-    aura::Window* child) {
-}
-
-void StatusAreaLayoutManager::OnWindowRemovedFromLayout(aura::Window* child) {
-}
-
-void StatusAreaLayoutManager::OnChildWindowVisibilityChanged(
-    aura::Window* child, bool visible) {
-}
-
 void StatusAreaLayoutManager::SetChildBounds(
     aura::Window* child,
     const gfx::Rect& requested_bounds) {
   // Only need to have the shelf do a layout if the child changing is the status
   // area and the shelf isn't in the process of doing a layout.
   if (child != shelf_->status_area_widget()->GetNativeView() || in_layout_) {
-    SetChildBoundsDirect(child, requested_bounds);
+    SnapToPixelLayoutManager::SetChildBounds(child, requested_bounds);
     return;
   }
 
   // If the bounds match, no need to do anything. Check for target bounds to
   // ensure any active animation is retargeted.
   if (requested_bounds == child->GetTargetBounds())
     return;
 
-  SetChildBoundsDirect(child, requested_bounds);
+  SnapToPixelLayoutManager::SetChildBounds(child, requested_bounds);
   LayoutStatusArea();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // StatusAreaLayoutManager, private:
 
 void StatusAreaLayoutManager::LayoutStatusArea() {
   // Shelf layout manager may be already doing layout.
   if (shelf_->shelf_layout_manager()->updating_bounds())
     return;
 
   base::AutoReset<bool> auto_reset_in_layout(&in_layout_, true);
   shelf_->shelf_layout_manager()->LayoutShelf();
 }
 
 }  // namespace ash