Mojo: more idiomatic C++ bindings

mojo/examples/pepper_container_app/pepper_container_app.cc

 // Copyright 2014 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/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "build/build_config.h"
 #include "mojo/examples/pepper_container_app/mojo_ppapi_globals.h"
 #include "mojo/examples/pepper_container_app/plugin_instance.h"
 #include "mojo/examples/pepper_container_app/plugin_module.h"
 #include "mojo/examples/pepper_container_app/type_converters.h"
-#include "mojo/public/cpp/bindings/allocation_scope.h"
 #include "mojo/public/cpp/environment/environment.h"
 #include "mojo/public/cpp/gles2/gles2.h"
 #include "mojo/public/cpp/shell/application.h"
 #include "mojo/public/cpp/system/core.h"
 #include "mojo/public/interfaces/shell/shell.mojom.h"
 #include "mojo/services/native_viewport/native_viewport.mojom.h"
 #include "ppapi/c/pp_rect.h"
 #include "ppapi/shared_impl/proxy_lock.h"
 
 #if defined(OS_WIN)
@@ skipping 10 matching lines @@
 namespace examples {
 
 class PepperContainerApp: public Application,
                           public NativeViewportClient,
                           public MojoPpapiGlobals::Delegate {
  public:
   explicit PepperContainerApp(MojoHandle shell_handle)
       : Application(shell_handle),
         ppapi_globals_(this),
         plugin_module_(new PluginModule) {
-    mojo::AllocationScope scope;
-
     ConnectTo("mojo:mojo_native_viewport_service", &viewport_);
     viewport_->SetClient(this);
 
-    Rect::Builder rect;
-    Point::Builder point;
-    point.set_x(10);
-    point.set_y(10);
-    rect.set_position(point.Finish());
-    Size::Builder size;
-    size.set_width(800);
-    size.set_height(600);
-    rect.set_size(size.Finish());
-    viewport_->Create(rect.Finish());
+    RectPtr rect(Rect::New());
+    rect->position = Point::New();
+    rect->position->x = 10;
+    rect->position->y = 10;
+    rect->size = Size::New();
+    rect->size->width = 800;
+    rect->size->height = 600;
+    viewport_->Create(rect.Pass());
     viewport_->Show();
   }
 
   virtual ~PepperContainerApp() {}
 
   // NativeViewportClient implementation.
   virtual void OnCreated() OVERRIDE {
     ppapi::ProxyAutoLock lock;
 
     plugin_instance_ = plugin_module_->CreateInstance().Pass();
     if (!plugin_instance_->DidCreate())
       plugin_instance_.reset();
   }
 
   virtual void OnDestroyed() OVERRIDE {
     ppapi::ProxyAutoLock lock;
 
     if (plugin_instance_) {
       plugin_instance_->DidDestroy();
       plugin_instance_.reset();
     }
 
     base::MessageLoop::current()->Quit();
   }
 
-  virtual void OnBoundsChanged(const Rect& bounds) OVERRIDE {
+  virtual void OnBoundsChanged(RectPtr bounds) OVERRIDE {
     ppapi::ProxyAutoLock lock;
 
     if (plugin_instance_)
-      plugin_instance_->DidChangeView(bounds);
+      plugin_instance_->DidChangeView(bounds.To<PP_Rect>());
   }
 
-  virtual void OnEvent(const Event& event,
+  virtual void OnEvent(EventPtr event,
                        const mojo::Callback<void()>& callback) OVERRIDE {
-    if (!event.location().is_null()) {
+    if (!event->location.is_null()) {
       ppapi::ProxyAutoLock lock;
 
       // TODO(yzshen): Handle events.
     }
     callback.Run();
   }
 
   // MojoPpapiGlobals::Delegate implementation.
   virtual ScopedMessagePipeHandle CreateGLES2Context() OVERRIDE {
     MessagePipe gles2_pipe;
@@ skipping 17 matching lines @@
 extern "C" PEPPER_CONTAINER_APP_EXPORT MojoResult CDECL MojoMain(
     MojoHandle shell_handle) {
   mojo::Environment env;
   mojo::GLES2Initializer gles2;
   base::MessageLoop run_loop;
   mojo::examples::PepperContainerApp app(shell_handle);
 
   run_loop.Run();
   return MOJO_RESULT_OK;
 }