services/sky/compositor/surface_holder.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 "services/sky/compositor/surface_holder.h"

#include "base/bind.h"
#include "base/message_loop/message_loop.h"
#include "mojo/converters/geometry/geometry_type_converters.h"
#include "mojo/public/cpp/application/connect.h"
#include "mojo/public/interfaces/application/shell.mojom.h"
#include "services/sky/compositor/surface_allocator.h"

namespace sky {

SurfaceHolder::Client::~Client() {
}

SurfaceHolder::SurfaceHolder(Client* client, mojo::Shell* shell)
    : client_(client),
      id_namespace_(0u),
      local_id_(0u),
      returner_binding_(this),
      weak_factory_(this) {
  mojo::ServiceProviderPtr service_provider;
  shell->ConnectToApplication("mojo:surfaces_service",
                              mojo::GetProxy(&service_provider), nullptr);
  mojo::ConnectToService(service_provider.get(), &surface_);
  surface_->GetIdNamespace(
      base::Bind(&SurfaceHolder::SetIdNamespace, base::Unretained(this)));
  mojo::ResourceReturnerPtr returner_ptr;
  returner_binding_.Bind(GetProxy(&returner_ptr));
  surface_->SetResourceReturner(returner_ptr.Pass());
}

SurfaceHolder::~SurfaceHolder() {
  if (local_id_ != 0u)
    surface_->DestroySurface(local_id_);
}

void SurfaceHolder::SubmitFrame(mojo::FramePtr frame,
                                const base::Closure& callback) {
  surface_->SubmitFrame(local_id_, frame.Pass(), callback);
}

void SurfaceHolder::SetSize(const gfx::Size& size) {
  if (local_id_ != 0u && size_ == size)
    return;

  if (local_id_ != 0u)
    surface_->DestroySurface(local_id_);

  local_id_++;
  surface_->CreateSurface(local_id_);
  size_ = size;

  if (id_namespace_ != 0u)
    SetQualifiedId();
}

void SurfaceHolder::SetQualifiedId() {
  auto qualified_id = mojo::SurfaceId::New();
  qualified_id->id_namespace = id_namespace_;
  qualified_id->local = local_id_;
  client_->OnSurfaceIdAvailable(qualified_id.Pass());
}

void SurfaceHolder::SetIdNamespace(uint32_t id_namespace) {
  id_namespace_ = id_namespace;
  if (local_id_ != 0u)
    SetQualifiedId();
}

void SurfaceHolder::ReturnResources(
    mojo::Array<mojo::ReturnedResourcePtr> resources) {
  client_->ReturnResources(resources.Pass());
}

}  // namespace sky