It is time.

ui/aura/demo/demo_main.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 "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/message_loop.h"
-#include "third_party/skia/include/core/SkXfermode.h"
-#include "ui/aura/client/default_capture_client.h"
-#include "ui/aura/client/window_tree_client.h"
-#include "ui/aura/env.h"
-#include "ui/aura/test/test_focus_client.h"
-#include "ui/aura/test/test_screen.h"
-#include "ui/aura/window.h"
-#include "ui/aura/window_delegate.h"
-#include "ui/aura/window_tree_host.h"
-#include "ui/base/hit_test.h"
-#include "ui/compositor/test/in_process_context_factory.h"
-#include "ui/events/event.h"
-#include "ui/gfx/canvas.h"
-#include "ui/gfx/rect.h"
-#include "ui/gl/gl_surface.h"
-
-#if defined(USE_X11)
-#include "ui/gfx/x/x11_connection.h"
-#endif
-
-#if defined(OS_WIN)
-#include "ui/gfx/win/dpi.h"
-#endif
-
-namespace {
-
-// Trivial WindowDelegate implementation that draws a colored background.
-class DemoWindowDelegate : public aura::WindowDelegate {
- public:
-  explicit DemoWindowDelegate(SkColor color) : color_(color) {}
-
-  // Overridden from WindowDelegate:
-  virtual gfx::Size GetMinimumSize() const override {
-    return gfx::Size();
-  }
-
-  virtual gfx::Size GetMaximumSize() const override {
-    return gfx::Size();
-  }
-
-  virtual void OnBoundsChanged(const gfx::Rect& old_bounds,
-                               const gfx::Rect& new_bounds) override {}
-  virtual gfx::NativeCursor GetCursor(const gfx::Point& point) override {
-    return gfx::kNullCursor;
-  }
-  virtual int GetNonClientComponent(const gfx::Point& point) const override {
-    return HTCAPTION;
-  }
-  virtual bool ShouldDescendIntoChildForEventHandling(
-      aura::Window* child,
-      const gfx::Point& location) override {
-    return true;
-  }
-  virtual bool CanFocus() override { return true; }
-  virtual void OnCaptureLost() override {}
-  virtual void OnPaint(gfx::Canvas* canvas) override {
-    canvas->DrawColor(color_, SkXfermode::kSrc_Mode);
-  }
-  virtual void OnDeviceScaleFactorChanged(float device_scale_factor) override {}
-  virtual void OnWindowDestroying(aura::Window* window) override {}
-  virtual void OnWindowDestroyed(aura::Window* window) override {}
-  virtual void OnWindowTargetVisibilityChanged(bool visible) override {}
-  virtual bool HasHitTestMask() const override { return false; }
-  virtual void GetHitTestMask(gfx::Path* mask) const override {}
-
- private:
-  SkColor color_;
-
-  DISALLOW_COPY_AND_ASSIGN(DemoWindowDelegate);
-};
-
-class DemoWindowTreeClient : public aura::client::WindowTreeClient {
- public:
-  explicit DemoWindowTreeClient(aura::Window* window) : window_(window) {
-    aura::client::SetWindowTreeClient(window_, this);
-  }
-
-  virtual ~DemoWindowTreeClient() {
-    aura::client::SetWindowTreeClient(window_, NULL);
-  }
-
-  // Overridden from aura::client::WindowTreeClient:
-  virtual aura::Window* GetDefaultParent(aura::Window* context,
-                                         aura::Window* window,
-                                         const gfx::Rect& bounds) override {
-    if (!capture_client_) {
-      capture_client_.reset(
-          new aura::client::DefaultCaptureClient(window_->GetRootWindow()));
-    }
-    return window_;
-  }
-
- private:
-  aura::Window* window_;
-
-  scoped_ptr<aura::client::DefaultCaptureClient> capture_client_;
-
-  DISALLOW_COPY_AND_ASSIGN(DemoWindowTreeClient);
-};
-
-int DemoMain() {
-#if defined(USE_X11)
-  // This demo uses InProcessContextFactory which uses X on a separate Gpu
-  // thread.
-  gfx::InitializeThreadedX11();
-#endif
-
-  gfx::GLSurface::InitializeOneOff();
-
-#if defined(OS_WIN)
-  gfx::InitDeviceScaleFactor(1.0f);
-#endif
-
-  // The ContextFactory must exist before any Compositors are created.
-  scoped_ptr<ui::InProcessContextFactory> context_factory(
-      new ui::InProcessContextFactory());
-
-  // Create the message-loop here before creating the root window.
-  base::MessageLoopForUI message_loop;
-
-  aura::Env::CreateInstance(true);
-  aura::Env::GetInstance()->set_context_factory(context_factory.get());
-  scoped_ptr<aura::TestScreen> test_screen(
-      aura::TestScreen::Create(gfx::Size()));
-  gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, test_screen.get());
-  scoped_ptr<aura::WindowTreeHost> host(
-      test_screen->CreateHostForPrimaryDisplay());
-  scoped_ptr<DemoWindowTreeClient> window_tree_client(
-      new DemoWindowTreeClient(host->window()));
-  aura::test::TestFocusClient focus_client;
-  aura::client::SetFocusClient(host->window(), &focus_client);
-
-  // Create a hierarchy of test windows.
-  DemoWindowDelegate window_delegate1(SK_ColorBLUE);
-  aura::Window window1(&window_delegate1);
-  window1.set_id(1);
-  window1.Init(aura::WINDOW_LAYER_TEXTURED);
-  window1.SetBounds(gfx::Rect(100, 100, 400, 400));
-  window1.Show();
-  aura::client::ParentWindowWithContext(&window1, host->window(), gfx::Rect());
-
-  DemoWindowDelegate window_delegate2(SK_ColorRED);
-  aura::Window window2(&window_delegate2);
-  window2.set_id(2);
-  window2.Init(aura::WINDOW_LAYER_TEXTURED);
-  window2.SetBounds(gfx::Rect(200, 200, 350, 350));
-  window2.Show();
-  aura::client::ParentWindowWithContext(&window2, host->window(), gfx::Rect());
-
-  DemoWindowDelegate window_delegate3(SK_ColorGREEN);
-  aura::Window window3(&window_delegate3);
-  window3.set_id(3);
-  window3.Init(aura::WINDOW_LAYER_TEXTURED);
-  window3.SetBounds(gfx::Rect(10, 10, 50, 50));
-  window3.Show();
-  window2.AddChild(&window3);
-
-  host->Show();
-  base::MessageLoopForUI::current()->Run();
-
-  return 0;
-}
-
-}  // 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;
-
-  base::i18n::InitializeICU();
-
-  return DemoMain();
-}