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/memory/weak_ptr.h"
#include "base/message_loop/message_loop.h"
#include "build/build_config.h"
#include "mojo/application/application_runner_chromium.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/c/system/main.h"
#include "mojo/public/cpp/application/application_delegate.h"
#include "mojo/public/cpp/application/application_impl.h"
#include "mojo/public/cpp/system/core.h"
#include "mojo/services/public/interfaces/geometry/geometry.mojom.h"
#include "mojo/services/public/interfaces/gpu/gpu.mojom.h"
#include "mojo/services/public/interfaces/native_viewport/native_viewport.mojom.h"
#include "ppapi/c/pp_rect.h"
#include "ppapi/shared_impl/proxy_lock.h"

namespace mojo {
namespace examples {

class PepperContainerApp: public ApplicationDelegate,
                          public NativeViewportClient,
                          public MojoPpapiGlobals::Delegate {
 public:
  PepperContainerApp()
      : ppapi_globals_(this),
        plugin_module_(new PluginModule),
        weak_factory_(this) {}

  virtual ~PepperContainerApp() {}

  virtual void Initialize(ApplicationImpl* app) override {
    app->ConnectToService("mojo:native_viewport_service", &viewport_);
    viewport_.set_client(this);

    // TODO(jamesr): Should be mojo:gpu_service
    app->ConnectToService("mojo:native_viewport_service", &gpu_service_);

    SizePtr size(Size::New());
    size->width = 800;
    size->height = 600;
    viewport_->Create(size.Pass(),
                      base::Bind(&PepperContainerApp::OnCreatedNativeViewport,
                                 weak_factory_.GetWeakPtr()));
    viewport_->Show();
  }

  // NativeViewportClient implementation.
  virtual void OnDestroyed() override {
    ppapi::ProxyAutoLock lock;

    if (plugin_instance_) {
      plugin_instance_->DidDestroy();
      plugin_instance_.reset();
    }

    base::MessageLoop::current()->Quit();
  }

  virtual void OnSizeChanged(SizePtr size) override {
    ppapi::ProxyAutoLock lock;

    if (plugin_instance_) {
      PP_Rect pp_rect = {{0, 0}, {size->width, size->height}};
      plugin_instance_->DidChangeView(pp_rect);
    }
  }

  virtual void OnEvent(EventPtr event,
                       const mojo::Callback<void()>& callback) override {
    if (!event->location_data.is_null()) {
      ppapi::ProxyAutoLock lock;

      // TODO(yzshen): Handle events.
    }
    callback.Run();
  }

  // MojoPpapiGlobals::Delegate implementation.
  virtual ScopedMessagePipeHandle CreateGLES2Context() override {
    CommandBufferPtr command_buffer;
    SizePtr size = Size::New();
    size->width = 800;
    size->width = 600;
    // TODO(jamesr): Output a surface to the native viewport instead.
    gpu_service_->CreateOnscreenGLES2Context(
        native_viewport_id_, size.Pass(), GetProxy(&command_buffer));
    return command_buffer.PassMessagePipe();
  }

 private:
  void OnCreatedNativeViewport(uint64_t native_viewport_id) {
    native_viewport_id_ = native_viewport_id;
    ppapi::ProxyAutoLock lock;

    plugin_instance_ = plugin_module_->CreateInstance().Pass();
    if (!plugin_instance_->DidCreate())
      plugin_instance_.reset();
  }

  MojoPpapiGlobals ppapi_globals_;

  uint64_t native_viewport_id_;
  NativeViewportPtr viewport_;
  GpuPtr gpu_service_;
  scoped_refptr<PluginModule> plugin_module_;
  scoped_ptr<PluginInstance> plugin_instance_;

  base::WeakPtrFactory<PepperContainerApp> weak_factory_;

  DISALLOW_COPY_AND_ASSIGN(PepperContainerApp);
};

}  // namespace examples
}  // namespace mojo

MojoResult MojoMain(MojoHandle shell_handle) {
  mojo::ApplicationRunnerChromium runner(
      new mojo::examples::PepperContainerApp);
  return runner.Run(shell_handle);
}