/**
 * Stone of Orthanc
 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
 * Department, University Hospital of Liege, Belgium
 *
 * This program is free software: you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * In addition, as a special exception, the copyright holders of this
 * program give permission to link the code of its release with the
 * OpenSSL project's "OpenSSL" library (or with modified versions of it
 * that use the same license as the "OpenSSL" library), and distribute
 * the linked executables. You must obey the GNU General Public License
 * in all respects for all of the code used other than "OpenSSL". If you
 * modify file(s) with this exception, you may extend this exception to
 * your version of the file(s), but you are not obligated to do so. If
 * you do not wish to do so, delete this exception statement from your
 * version. If you delete this exception statement from all source files
 * in the program, then also delete it here.
 * 
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 **/


#pragma once

#if ORTHANC_ENABLE_SDL == 1

#include "SdlBuffering.h"
#include "../../Toolbox/BinarySemaphore.h"

#include <boost/thread.hpp>

namespace OrthancStone
{
  class SdlEngine : public IViewport::IChangeObserver
  {
  private:
    SdlWindow&        window_;
    IViewport&        viewport_;
    SdlBuffering      buffering_;
    boost::thread     renderThread_;
    bool              continue_;
    BinarySemaphore   renderFrame_;
    uint32_t          refreshEvent_;
    bool              viewportChanged_;

    void RenderFrame();

    static void RenderThread(SdlEngine* that);

    static KeyboardModifiers GetKeyboardModifiers(const uint8_t* keyboardState,
                                                  const int scancodeCount);

    void SetSize(unsigned int width,
                 unsigned int height);

    void Stop();

    void Refresh();

  public:
    SdlEngine(SdlWindow& window,
              IViewport& viewport);
  
    virtual ~SdlEngine();

    virtual void NotifyChange(const IViewport& viewport)
    {
      viewportChanged_ = true;
    }

    void Run();

    static void GlobalInitialize();

    static void GlobalFinalize();
  };
}

#endif