Mojo: more idiomatic C++ bindings

mojo/examples/compositor_app/compositor_app.cc

 // Copyright 2013 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 <stdio.h>
 #include <string>
 
 #include "base/macros.h"
 #include "mojo/examples/compositor_app/compositor_host.h"
 #include "mojo/public/cpp/application/application.h"
-#include "mojo/public/cpp/bindings/allocation_scope.h"
 #include "mojo/public/cpp/gles2/gles2.h"
 #include "mojo/public/cpp/system/core.h"
 #include "mojo/public/interfaces/service_provider/service_provider.mojom.h"
 #include "mojo/services/native_viewport/native_viewport.mojom.h"
 #include "mojo/services/public/cpp/geometry/geometry_type_converters.h"
 #include "ui/gfx/rect.h"
 
 namespace mojo {
 namespace examples {
 
 class SampleApp : public Application, public NativeViewportClient {
  public:
   SampleApp() {}
   virtual ~SampleApp() {}
 
   virtual void Initialize() OVERRIDE {
-    AllocationScope scope;
-
     ConnectTo("mojo:mojo_native_viewport_service", &viewport_);
     viewport_.set_client(this);
 
-    viewport_->Create(gfx::Rect(10, 10, 800, 600));
+    viewport_->Create(Rect::From(gfx::Rect(10, 10, 800, 600)));
     viewport_->Show();
 
     MessagePipe gles2_pipe;
     viewport_->CreateGLES2Context(gles2_pipe.handle0.Pass());
     host_.reset(new CompositorHost(gles2_pipe.handle1.Pass()));
   }
 
   virtual void OnCreated() OVERRIDE {
   }
 
   virtual void OnDestroyed() OVERRIDE {
     base::MessageLoop::current()->Quit();
   }
 
-  virtual void OnBoundsChanged(const Rect& bounds) OVERRIDE {
-    AllocationScope scope;
-    Size::Builder size;
-    size.set_width(bounds.width());
-    size.set_height(bounds.height());
-    host_->SetSize(size.Finish());
+  virtual void OnBoundsChanged(RectPtr bounds) OVERRIDE {
+    host_->SetSize(gfx::Size(bounds->width, bounds->height));
   }
 
-  virtual void OnEvent(const Event& event,
+  virtual void OnEvent(EventPtr event,
                        const mojo::Callback<void()>& callback) OVERRIDE {
     callback.Run();
   }
 
  private:
   mojo::GLES2Initializer gles2;
   NativeViewportPtr viewport_;
   scoped_ptr<CompositorHost> host_;
   DISALLOW_COPY_AND_ASSIGN(SampleApp);
 };
 
 }  // namespace examples
 
 // static
 Application* Application::Create() {
   return new examples::SampleApp();
 }
 
 }  // namespace mojo