display_system.hpp

//------------------------------------------------------------------------------
// Project Phoenix
//
// Copyright (c) 2017-2018 RWTH Aachen University, Germany,
// Virtual Reality & Immersive Visualization Group.
//------------------------------------------------------------------------------
//                                 License
//
// Licensed under the 3-Clause BSD License (the "License");
// you may not use this file except in compliance with the License.
// See the file LICENSE for the full text.
// You may obtain a copy of the License at
//
//     https://opensource.org/licenses/BSD-3-Clause
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//------------------------------------------------------------------------------

#ifndef LIBRARY_PHX_DISPLAY_SYSTEM_HPP_
#define LIBRARY_PHX_DISPLAY_SYSTEM_HPP_

#include <memory>
#include <vector>

#include "phx/engine.hpp"
#include "phx/export.hpp"
#include "phx/hmd.hpp"
#include "phx/system.hpp"
#include "phx/window.hpp"

#undef CreateWindow

namespace phx {

class PHOENIX_EXPORT DisplaySystem : public System {
 public:
  DisplaySystem(const DisplaySystem&) = delete;
  DisplaySystem(DisplaySystem&&) = default;
  ~DisplaySystem();

  DisplaySystem& operator=(const DisplaySystem&) = delete;
  DisplaySystem& operator=(DisplaySystem&&) = default;

  template <typename... Arguments>
  Window* CreateWindow(Arguments&&... arguments);
  void DestroyWindow();
  Window* GetWindow();

  HMD* CreateHMD();
  void DestroyHMD();
  HMD* GetHMD();

  void Update(const FrameTimer::TimeInfo&) override;

 protected:
  explicit DisplaySystem(Engine* engine);
  friend DisplaySystem* Engine::CreateSystem<DisplaySystem>();

  std::unique_ptr<Window> window_;
  std::unique_ptr<HMD> hmd_;
};

template <typename... Arguments>
Window* DisplaySystem::CreateWindow(Arguments&&... arguments) {
  // Do not use make_unique due to the friendship to Window.
  window_ = std::unique_ptr<Window>(new Window(arguments...));
  return window_.get();
}
}  // namespace phx

#endif  // LIBRARY_PHX_DISPLAY_SYSTEM_HPP_