root/ui/aura/demo/demo_main.cc

DEFINITIONS

1. GetMinimumSize
2. GetMaximumSize
3. OnBoundsChanged
4. GetCursor
5. GetNonClientComponent
6. ShouldDescendIntoChildForEventHandling
7. CanFocus
8. OnCaptureLost
9. OnPaint
10. OnDeviceScaleFactorChanged
11. OnWindowDestroying
12. OnWindowDestroyed
13. OnWindowTargetVisibilityChanged
14. HasHitTestMask
15. GetHitTestMask
16. GetDefaultParent
17. DemoMain
18. main

// 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.

#if defined(USE_X11)
#include <X11/Xlib.h>
#endif

#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 "base/message_loop/message_pump_x11.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.
  XInitThreads();
#endif

  gfx::GLSurface::InitializeOneOff();

  // The ContextFactory must exist before any Compositors are created.
  scoped_ptr<ui::InProcessContextFactory> context_factory(
      new ui::InProcessContextFactory());
  ui::ContextFactory::SetInstance(context_factory.get());

  // Create the message-loop here before creating the root window.
  base::MessageLoopForUI message_loop;

  aura::Env::CreateInstance();
  scoped_ptr<aura::TestScreen> test_screen(aura::TestScreen::Create());
  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();
}