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/aura/screen_mojo.h"
  12 #include "mojo/aura/window_tree_host_mojo.h"
  13 #include "mojo/public/cpp/bindings/allocation_scope.h"
  14 #include "mojo/public/cpp/gles2/gles2.h"
  15 #include "mojo/public/cpp/shell/application.h"
  16 #include "mojo/public/cpp/system/core.h"
  17 #include "mojo/public/interfaces/shell/shell.mojom.h"
  18 #include "mojo/services/native_viewport/native_viewport.mojom.h"
  19 #include "ui/aura/client/default_capture_client.h"
  20 #include "ui/aura/client/window_tree_client.h"
  21 #include "ui/aura/env.h"
  22 #include "ui/aura/window.h"
  23 #include "ui/aura/window_delegate.h"
  24 #include "ui/base/hit_test.h"
  25 #include "ui/gfx/canvas.h"
  26
  27 #if defined(WIN32)
  28 #if !defined(CDECL)
  29 #define CDECL __cdecl
  30 #endif
  31 #define AURA_DEMO_EXPORT __declspec(dllexport)
  32 #else
  33 #define CDECL
  34 #define AURA_DEMO_EXPORT __attribute__((visibility("default")))
  35 #endif
  36
  37 namespace mojo {
  38 namespace examples {
  39
  40 // Trivial WindowDelegate implementation that draws a colored background.
  41 class DemoWindowDelegate : public aura::WindowDelegate {
  42  public:
  43   explicit DemoWindowDelegate(SkColor color) : color_(color) {}
  44
  45   // Overridden from WindowDelegate:
  46   virtual gfx::Size GetMinimumSize() const OVERRIDE {
  47     return gfx::Size();
  48   }
  49
  50   virtual gfx::Size GetMaximumSize() const OVERRIDE {
  51     return gfx::Size();
  52   }
  53
  54   virtual void OnBoundsChanged(const gfx::Rect& old_bounds,
  55                                const gfx::Rect& new_bounds) OVERRIDE {}
  56   virtual gfx::NativeCursor GetCursor(const gfx::Point& point) OVERRIDE {
  57     return gfx::kNullCursor;
  58   }
  59   virtual int GetNonClientComponent(const gfx::Point& point) const OVERRIDE {
  60     return HTCAPTION;
  61   }
  62   virtual bool ShouldDescendIntoChildForEventHandling(
  63       aura::Window* child,
  64       const gfx::Point& location) OVERRIDE {
  65     return true;
  66   }
  67   virtual bool CanFocus() OVERRIDE { return true; }
  68   virtual void OnCaptureLost() OVERRIDE {}
  69   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
  70     canvas->DrawColor(color_, SkXfermode::kSrc_Mode);
  71   }
  72   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE {}
  73   virtual void OnWindowDestroying(aura::Window* window) OVERRIDE {}
  74   virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE {}
  75   virtual void OnWindowTargetVisibilityChanged(bool visible) OVERRIDE {}
  76   virtual bool HasHitTestMask() const OVERRIDE { return false; }
  77   virtual void GetHitTestMask(gfx::Path* mask) const OVERRIDE {}
  78
  79  private:
  80   SkColor color_;
  81
  82   DISALLOW_COPY_AND_ASSIGN(DemoWindowDelegate);
  83 };
  84
  85 class DemoWindowTreeClient : public aura::client::WindowTreeClient {
  86  public:
  87   explicit DemoWindowTreeClient(aura::Window* window) : window_(window) {
  88     aura::client::SetWindowTreeClient(window_, this);
  89   }
  90
  91   virtual ~DemoWindowTreeClient() {
  92     aura::client::SetWindowTreeClient(window_, NULL);
  93   }
  94
  95   // Overridden from aura::client::WindowTreeClient:
  96   virtual aura::Window* GetDefaultParent(aura::Window* context,
  97                                          aura::Window* window,
  98                                          const gfx::Rect& bounds) OVERRIDE {
  99     if (!capture_client_) {
 100       capture_client_.reset(
 101           new aura::client::DefaultCaptureClient(window_->GetRootWindow()));
 102     }
 103     return window_;
 104   }
 105
 106  private:
 107   aura::Window* window_;
 108
 109   scoped_ptr<aura::client::DefaultCaptureClient> capture_client_;
 110
 111   DISALLOW_COPY_AND_ASSIGN(DemoWindowTreeClient);
 112 };
 113
 114 class AuraDemo : public Application {
 115  public:
 116   explicit AuraDemo(MojoHandle shell_handle) : Application(shell_handle) {
 117     screen_.reset(ScreenMojo::Create());
 118     gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, screen_.get());
 119
 120     NativeViewportPtr native_viewport;
 121     ConnectTo("mojo:mojo_native_viewport_service", &native_viewport);
 122
 123     window_tree_host_.reset(new WindowTreeHostMojo(
 124         native_viewport.Pass(),
 125         gfx::Rect(800, 600),
 126         base::Bind(&AuraDemo::HostContextCreated, base::Unretained(this))));
 127   }
 128
 129  private:
 130   void HostContextCreated() {
 131     window_tree_host_->InitHost();
 132
 133     window_tree_client_.reset(
 134         new DemoWindowTreeClient(window_tree_host_->window()));
 135
 136     delegate1_.reset(new DemoWindowDelegate(SK_ColorBLUE));
 137     window1_ = new aura::Window(delegate1_.get());
 138     window1_->Init(aura::WINDOW_LAYER_TEXTURED);
 139     window1_->SetBounds(gfx::Rect(100, 100, 400, 400));
 140     window1_->Show();
 141     window_tree_host_->window()->AddChild(window1_);
 142
 143     delegate2_.reset(new DemoWindowDelegate(SK_ColorRED));
 144     window2_ = new aura::Window(delegate2_.get());
 145     window2_->Init(aura::WINDOW_LAYER_TEXTURED);
 146     window2_->SetBounds(gfx::Rect(200, 200, 350, 350));
 147     window2_->Show();
 148     window_tree_host_->window()->AddChild(window2_);
 149
 150     delegate21_.reset(new DemoWindowDelegate(SK_ColorGREEN));
 151     window21_ = new aura::Window(delegate21_.get());
 152     window21_->Init(aura::WINDOW_LAYER_TEXTURED);
 153     window21_->SetBounds(gfx::Rect(10, 10, 50, 50));
 154     window21_->Show();
 155     window2_->AddChild(window21_);
 156
 157     window_tree_host_->Show();
 158   }
 159
 160   scoped_ptr<ScreenMojo> screen_;
 161
 162   scoped_ptr<DemoWindowTreeClient> window_tree_client_;
 163
 164   scoped_ptr<DemoWindowDelegate> delegate1_;
 165   scoped_ptr<DemoWindowDelegate> delegate2_;
 166   scoped_ptr<DemoWindowDelegate> delegate21_;
 167
 168   aura::Window* window1_;
 169   aura::Window* window2_;
 170   aura::Window* window21_;
 171
 172   scoped_ptr<aura::WindowTreeHost> window_tree_host_;
 173 };
 174
 175 }  // namespace examples
 176 }  // namespace mojo
 177
 178 extern "C" AURA_DEMO_EXPORT MojoResult CDECL MojoMain(
 179     MojoHandle shell_handle) {
 180   CommandLine::Init(0, NULL);
 181   base::AtExitManager at_exit;
 182   base::MessageLoop loop;
 183   mojo::GLES2Initializer gles2;
 184
 185   // TODO(beng): This crashes in a DCHECK on X11 because this thread's
 186   //             MessageLoop is not of TYPE_UI. I think we need a way to build
 187   //             Aura that doesn't define platform-specific stuff.
 188   aura::Env::CreateInstance(true);
 189   mojo::examples::AuraDemo app(shell_handle);
 190   loop.Run();
 191
 192   return MOJO_RESULT_OK;
 193 }