src/mojo/examples/aura_demo/aura_demo.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <stdio.h>
   6 #include <string>
   7
   8 #include "base/at_exit.h"
   9 #include "base/command_line.h"
  10 #include "base/message_loop/message_loop.h"
  11 #include "mojo/examples/aura_demo/demo_screen.h"
  12 #include "mojo/examples/aura_demo/root_window_host_mojo.h"
  13 #include "mojo/examples/compositor_app/compositor_host.h"
  14 #include "mojo/examples/compositor_app/gles2_client_impl.h"
  15 #include "mojo/public/bindings/lib/remote_ptr.h"
  16 #include "mojo/public/gles2/gles2_cpp.h"
  17 #include "mojo/public/system/core.h"
  18 #include "mojo/public/system/macros.h"
  19 #include "mojom/native_viewport.h"
  20 #include "mojom/shell.h"
  21 #include "ui/aura/client/default_capture_client.h"
  22 #include "ui/aura/client/window_tree_client.h"
  23 #include "ui/aura/env.h"
  24 #include "ui/aura/root_window.h"
  25 #include "ui/aura/window.h"
  26 #include "ui/aura/window_delegate.h"
  27 #include "ui/base/hit_test.h"
  28 #include "ui/gfx/canvas.h"
  29
  30 #if defined(WIN32)
  31 #if !defined(CDECL)
  32 #define CDECL __cdecl
  33 #endif
  34 #define AURA_DEMO_EXPORT __declspec(dllexport)
  35 #else
  36 #define CDECL
  37 #define AURA_DEMO_EXPORT __attribute__((visibility("default")))
  38 #endif
  39
  40 namespace mojo {
  41 namespace examples {
  42
  43 // Trivial WindowDelegate implementation that draws a colored background.
  44 class DemoWindowDelegate : public aura::WindowDelegate {
  45  public:
  46   explicit DemoWindowDelegate(SkColor color) : color_(color) {}
  47
  48   // Overridden from WindowDelegate:
  49   virtual gfx::Size GetMinimumSize() const OVERRIDE {
  50     return gfx::Size();
  51   }
  52
  53   virtual gfx::Size GetMaximumSize() const OVERRIDE {
  54     return gfx::Size();
  55   }
  56
  57   virtual void OnBoundsChanged(const gfx::Rect& old_bounds,
  58                                const gfx::Rect& new_bounds) OVERRIDE {}
  59   virtual gfx::NativeCursor GetCursor(const gfx::Point& point) OVERRIDE {
  60     return gfx::kNullCursor;
  61   }
  62   virtual int GetNonClientComponent(const gfx::Point& point) const OVERRIDE {
  63     return HTCAPTION;
  64   }
  65   virtual bool ShouldDescendIntoChildForEventHandling(
  66       aura::Window* child,
  67       const gfx::Point& location) OVERRIDE {
  68     return true;
  69   }
  70   virtual bool CanFocus() OVERRIDE { return true; }
  71   virtual void OnCaptureLost() OVERRIDE {}
  72   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
  73     canvas->DrawColor(color_, SkXfermode::kSrc_Mode);
  74   }
  75   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE {}
  76   virtual void OnWindowDestroying() OVERRIDE {}
  77   virtual void OnWindowDestroyed() OVERRIDE {}
  78   virtual void OnWindowTargetVisibilityChanged(bool visible) OVERRIDE {}
  79   virtual bool HasHitTestMask() const OVERRIDE { return false; }
  80   virtual void GetHitTestMask(gfx::Path* mask) const OVERRIDE {}
  81   virtual void DidRecreateLayer(ui::Layer* old_layer,
  82                                 ui::Layer* new_layer) OVERRIDE {}
  83
  84  private:
  85   SkColor color_;
  86
  87   DISALLOW_COPY_AND_ASSIGN(DemoWindowDelegate);
  88 };
  89
  90 class DemoWindowTreeClient : public aura::client::WindowTreeClient {
  91  public:
  92   explicit DemoWindowTreeClient(aura::Window* window) : window_(window) {
  93     aura::client::SetWindowTreeClient(window_, this);
  94   }
  95
  96   virtual ~DemoWindowTreeClient() {
  97     aura::client::SetWindowTreeClient(window_, NULL);
  98   }
  99
 100   // Overridden from aura::client::WindowTreeClient:
 101   virtual aura::Window* GetDefaultParent(aura::Window* context,
 102                                          aura::Window* window,
 103                                          const gfx::Rect& bounds) OVERRIDE {
 104     if (!capture_client_) {
 105       capture_client_.reset(
 106           new aura::client::DefaultCaptureClient(window_->GetRootWindow()));
 107     }
 108     return window_;
 109   }
 110
 111  private:
 112   aura::Window* window_;
 113
 114   scoped_ptr<aura::client::DefaultCaptureClient> capture_client_;
 115
 116   DISALLOW_COPY_AND_ASSIGN(DemoWindowTreeClient);
 117 };
 118
 119 class AuraDemo : public ShellClient {
 120  public:
 121   explicit AuraDemo(ScopedMessagePipeHandle shell_handle)
 122       : shell_(shell_handle.Pass(), this) {
 123     screen_.reset(DemoScreen::Create());
 124     gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, screen_.get());
 125
 126     ScopedMessagePipeHandle client_handle, native_viewport_handle;
 127     CreateMessagePipe(&client_handle, &native_viewport_handle);
 128     root_window_host_.reset(new WindowTreeHostMojo(
 129         native_viewport_handle.Pass(),
 130         gfx::Rect(800, 600),
 131         base::Bind(&AuraDemo::HostContextCreated, base::Unretained(this))));
 132     AllocationScope scope;
 133     shell_->Connect("mojo:mojo_native_viewport_service", client_handle.Pass());
 134   }
 135
 136   virtual void AcceptConnection(ScopedMessagePipeHandle handle) MOJO_OVERRIDE {
 137     NOTREACHED() << "AuraDemo can't be connected to.";
 138   }
 139
 140  private:
 141   void HostContextCreated() {
 142     aura::RootWindow::CreateParams params(gfx::Rect(0, 0, 500, 500));
 143     params.host = root_window_host_.get();
 144     root_window_.reset(new aura::RootWindow(params));
 145     root_window_host_->set_delegate(root_window_.get());
 146     root_window_->Init();
 147
 148     window_tree_client_.reset(new DemoWindowTreeClient(root_window_->window()));
 149
 150     delegate1_.reset(new DemoWindowDelegate(SK_ColorBLUE));
 151     window1_ = new aura::Window(delegate1_.get());
 152     window1_->Init(aura::WINDOW_LAYER_TEXTURED);
 153     window1_->SetBounds(gfx::Rect(100, 100, 400, 400));
 154     window1_->Show();
 155     root_window_->window()->AddChild(window1_);
 156
 157     delegate2_.reset(new DemoWindowDelegate(SK_ColorRED));
 158     window2_ = new aura::Window(delegate2_.get());
 159     window2_->Init(aura::WINDOW_LAYER_TEXTURED);
 160     window2_->SetBounds(gfx::Rect(200, 200, 350, 350));
 161     window2_->Show();
 162     root_window_->window()->AddChild(window2_);
 163
 164     delegate21_.reset(new DemoWindowDelegate(SK_ColorGREEN));
 165     window21_ = new aura::Window(delegate21_.get());
 166     window21_->Init(aura::WINDOW_LAYER_TEXTURED);
 167     window21_->SetBounds(gfx::Rect(10, 10, 50, 50));
 168     window21_->Show();
 169     window2_->AddChild(window21_);
 170
 171     root_window_->host()->Show();
 172   }
 173
 174   scoped_ptr<DemoScreen> screen_;
 175
 176   scoped_ptr<DemoWindowTreeClient> window_tree_client_;
 177
 178   scoped_ptr<DemoWindowDelegate> delegate1_;
 179   scoped_ptr<DemoWindowDelegate> delegate2_;
 180   scoped_ptr<DemoWindowDelegate> delegate21_;
 181
 182   aura::Window* window1_;
 183   aura::Window* window2_;
 184   aura::Window* window21_;
 185
 186   RemotePtr<Shell> shell_;
 187   scoped_ptr<WindowTreeHostMojo> root_window_host_;
 188   scoped_ptr<aura::RootWindow> root_window_;
 189 };
 190
 191 }  // namespace examples
 192 }  // namespace mojo
 193
 194 extern "C" AURA_DEMO_EXPORT MojoResult CDECL MojoMain(
 195     MojoHandle shell_handle) {
 196   CommandLine::Init(0, NULL);
 197   base::AtExitManager at_exit;
 198   base::MessageLoop loop;
 199   mojo::GLES2Initializer gles2;
 200
 201   // TODO(beng): This crashes in a DCHECK on X11 because this thread's
 202   //             MessageLoop is not of TYPE_UI. I think we need a way to build
 203   //             Aura that doesn't define platform-specific stuff.
 204   aura::Env::CreateInstance();
 205   mojo::examples::AuraDemo app(
 206       mojo::MakeScopedHandle(mojo::MessagePipeHandle(shell_handle)).Pass());
 207   loop.Run();
 208
 209   return MOJO_RESULT_OK;
 210 }