Create a new views_aura_desktop.

aura/demo/demo_main.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/window.h"
 #include "aura/window_delegate.h"
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/i18n/icu_util.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/message_loop.h"
 #include "third_party/skia/include/core/SkXfermode.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_paths.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/canvas_skia.h"
 #include "ui/gfx/rect.h"
 
 namespace {
 
-// Trivial WindowDelegate implementation that draws a blue background.
+// Trivial WindowDelegate implementation that draws a colored background.
 class DemoWindowDelegate : public aura::WindowDelegate {
  public:
-  explicit DemoWindowDelegate(aura::Window* window, SkColor color);
+  explicit DemoWindowDelegate(SkColor color) : color_(color) {}
 
-  virtual void OnPaint(const gfx::Rect& bounds) OVERRIDE;
+  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
+    canvas->AsCanvasSkia()->drawColor(color_, SkXfermode::kSrc_Mode);
+  }
 
  private:
-  aura::Window* window_;
-
   SkColor color_;
 
   DISALLOW_COPY_AND_ASSIGN(DemoWindowDelegate);
 };
 
-DemoWindowDelegate::DemoWindowDelegate(aura::Window* window, SkColor color)
-    : window_(window),
-      color_(color) {
-}
-
-void DemoWindowDelegate::OnPaint(const gfx::Rect& bounds) {
-  scoped_ptr<gfx::Canvas> canvas(
-      gfx::Canvas::CreateCanvas(bounds.width(), bounds.height(), false));
-  canvas->AsCanvasSkia()->drawColor(color_, SkXfermode::kSrc_Mode);
-  window_->SetCanvas(*canvas->AsCanvasSkia(), bounds.origin());
-}
 
 }  // namespace
 
 int main(int argc, char** argv) {
   CommandLine::Init(argc, argv);
 
   // The exit manager is in charge of calling the dtors of singleton objects.
   base::AtExitManager exit_manager;
 
   ui::RegisterPathProvider();
   icu_util::Initialize();
   ResourceBundle::InitSharedInstance("en-US");
 
 #if defined(USE_X11)
   base::MessagePumpX::DisableGtkMessagePump();
 #endif
 
-  // Create the DesktopHost and Desktop.
-  scoped_ptr<aura::DesktopHost> host(
-      aura::DesktopHost::Create(gfx::Rect(200, 200, 1024, 768)));
-  aura::Desktop desktop(host->GetAcceleratedWidget(), host->GetSize());
-  host->SetDesktop(&desktop);
+  aura::Desktop::GetInstance();
 
   // Create a hierarchy of test windows.
-  aura::Window window1(&desktop);
+  DemoWindowDelegate window_delegate1(SK_ColorBLUE);
+  aura::Window window1(&window_delegate1);
   window1.set_id(1);
+  window1.Init();
   window1.SetBounds(gfx::Rect(100, 100, 400, 400), 0);
   window1.SetVisibility(aura::Window::VISIBILITY_SHOWN);
-  DemoWindowDelegate window_delegate1(&window1, SK_ColorBLUE);
-  window1.set_delegate(&window_delegate1);
+  window1.SetParent(NULL);
 
-  desktop.window()->AddChild(&window1);
-
-  aura::Window window2(&desktop);
+  DemoWindowDelegate window_delegate2(SK_ColorRED);
+  aura::Window window2(&window_delegate2);
   window2.set_id(2);
+  window2.Init();
   window2.SetBounds(gfx::Rect(200, 200, 350, 350), 0);
   window2.SetVisibility(aura::Window::VISIBILITY_SHOWN);
-  DemoWindowDelegate window_delegate2(&window2, SK_ColorRED);
-  window2.set_delegate(&window_delegate2);
+  window2.SetParent(NULL);
 
-  desktop.window()->AddChild(&window2);
-
-  aura::Window window3(&desktop);
+  DemoWindowDelegate window_delegate3(SK_ColorGREEN);
+  aura::Window window3(&window_delegate3);
   window3.set_id(3);
+  window3.Init();
   window3.SetBounds(gfx::Rect(10, 10, 50, 50), 0);
   window3.SetVisibility(aura::Window::VISIBILITY_SHOWN);
-  DemoWindowDelegate window_delegate3(&window3, SK_ColorGREEN);
-  window3.set_delegate(&window_delegate3);
+  window3.SetParent(&window2);
 
-  window2.AddChild(&window3);
-
-  host->Show();
-
-  MessageLoop main_message_loop(MessageLoop::TYPE_UI);
-  MessageLoopForUI::current()->Run(host.get());
+  aura::Desktop::GetInstance()->Run();
   return 0;
 }
+