/**
 * 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/>.
 **/


#include "CairoContext.h"

#include "../Orthanc/Core/Logging.h"
#include "../Orthanc/Core/OrthancException.h"

namespace OrthancStone
{
  CairoContext::CairoContext(CairoSurface& surface)
  {
    context_ = cairo_create(surface.GetObject());
    if (!context_)
    {
      LOG(ERROR) << "Cannot create Cairo drawing context";
      throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
    }
  }


  CairoContext::~CairoContext()
  {
    if (context_ != NULL)
    {
      cairo_destroy(context_);
      context_ = NULL;
    }
  }


  void CairoContext::SetSourceColor(uint8_t red,
                                    uint8_t green,
                                    uint8_t blue)
  {
    cairo_set_source_rgb(context_,
                         static_cast<float>(red) / 255.0f,
                         static_cast<float>(green) / 255.0f,
                         static_cast<float>(blue) / 255.0f);
  }
}