Proper MouseEvent targeting. Adds a Window method that locates a Window for a given point.

aura/desktop.cc

 // Copyright (c) 2011 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 "aura/desktop.h"
 
 #include "aura/desktop_host.h"
+#include "aura/root_window.h"
 #include "aura/window.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "ui/gfx/compositor/compositor.h"
 
 namespace aura {
 
 // static
 Desktop* Desktop::instance_ = NULL;
 
 Desktop::Desktop()
     : host_(aura::DesktopHost::Create(gfx::Rect(200, 200, 1024, 768))) {
   compositor_ = ui::Compositor::Create(host_->GetAcceleratedWidget(),
                                        host_->GetSize());
   host_->SetDesktop(this);
   DCHECK(compositor_.get());
-  window_.reset(new Window(NULL));
+  window_.reset(new internal::RootWindow);
 }
 
 Desktop::~Desktop() {
 }
 
+void Desktop::Show() {
+  host_->Show();
+}
+
+void Desktop::SetSize(const gfx::Size& size) {
+  host_->SetSize(size);
+}
+
 void Desktop::Run() {
-  host_->Show();
+  Show();
   MessageLoop main_message_loop(MessageLoop::TYPE_UI);
   MessageLoopForUI::current()->Run(host_);
 }
 
 void Desktop::Draw() {
-  // Second pass renders the layers.
   compositor_->NotifyStart();
   window_->DrawTree();
   compositor_->NotifyEnd();
 }
 
 bool Desktop::OnMouseEvent(const MouseEvent& event) {
-  return window_->OnMouseEvent(event);
+  return window_->HandleMouseEvent(event);
 }
 
 // static
 Desktop* Desktop::GetInstance() {
   if (!instance_) {
     instance_ = new Desktop;
     instance_->window_->Init();
   }
   return instance_;
 }
 
 }  // namespace aura