Snap widgets to pixel boundary on ash

ash/wm/dock/docked_window_layout_manager.cc

 // 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.
 
 #include "ash/wm/dock/docked_window_layout_manager.h"
 
 #include "ash/screen_util.h"
 #include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_constants.h"
 #include "ash/shelf/shelf_layout_manager.h"
@@ skipping 384 matching lines @@
  private:
   DockedWindowLayoutManager* docked_layout_manager_;
   gfx::Rect shelf_bounds_in_screen_;
 
   DISALLOW_COPY_AND_ASSIGN(ShelfWindowObserver);
 };
 
 ////////////////////////////////////////////////////////////////////////////////
 // DockedWindowLayoutManager public implementation:
 DockedWindowLayoutManager::DockedWindowLayoutManager(
-    aura::Window* dock_container, WorkspaceController* workspace_controller)
-    : dock_container_(dock_container),
+    aura::Window* dock_container,
+    WorkspaceController* workspace_controller)
+    : SnapToPixelLayoutManager(dock_container),
+      dock_container_(dock_container),
       in_layout_(false),
       dragged_window_(NULL),
       is_dragged_window_docked_(false),
       is_dragged_from_dock_(false),
       shelf_(NULL),
       workspace_controller_(workspace_controller),
       in_fullscreen_(workspace_controller_->GetWindowState() ==
-          WORKSPACE_WINDOW_STATE_FULL_SCREEN),
+                     WORKSPACE_WINDOW_STATE_FULL_SCREEN),
       docked_width_(0),
       alignment_(DOCKED_ALIGNMENT_NONE),
       last_active_window_(NULL),
       last_action_time_(base::Time::Now()),
       background_widget_(new DockedBackgroundWidget(dock_container_)) {
   DCHECK(dock_container);
   aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())->
       AddObserver(this);
   Shell::GetInstance()->AddShellObserver(this);
 }
@@ skipping 284 matching lines @@
     const gfx::Rect& requested_bounds) {
   // The minimum constraints have to be applied first by the layout manager.
   gfx::Rect actual_new_bounds(requested_bounds);
   if (child->delegate()) {
     const gfx::Size& min_size = child->delegate()->GetMinimumSize();
     actual_new_bounds.set_width(
         std::max(min_size.width(), actual_new_bounds.width()));
     actual_new_bounds.set_height(
         std::max(min_size.height(), actual_new_bounds.height()));
   }
-  // Whenever one of our windows is moved or resized enforce layout.
-  SetChildBoundsDirect(child, actual_new_bounds);
+  SnapToPixelLayoutManager::SetChildBounds(child, actual_new_bounds);
   if (IsPopupOrTransient(child))
     return;
+  // Whenever one of our windows is moved or resized enforce layout.
   ShelfLayoutManager* shelf_layout =
       ShelfLayoutManager::ForShelf(dock_container_);
   if (shelf_layout)
     shelf_layout->UpdateVisibilityState();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // DockedWindowLayoutManager, ash::ShellObserver implementation:
 
 void DockedWindowLayoutManager::OnDisplayWorkAreaInsetsChanged() {
@@ skipping 585 matching lines @@
 
 void DockedWindowLayoutManager::OnKeyboardBoundsChanging(
     const gfx::Rect& keyboard_bounds) {
   // This bounds change will have caused a change to the Shelf which does not
   // propagate automatically to this class, so manually recalculate bounds.
   Relayout();
   UpdateDockBounds(DockedWindowLayoutManagerObserver::KEYBOARD_BOUNDS_CHANGING);
 }
 
 }  // namespace ash