/**
 * 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 "SingleFrameRendererFactory.h"

#include "FrameRenderer.h"
#include "../Messaging/MessagingToolbox.h"
#include "../Orthanc/Core/OrthancException.h"
#include "../Toolbox/DicomFrameConverter.h"

namespace OrthancStone
{
  SingleFrameRendererFactory::SingleFrameRendererFactory(IOrthancConnection& orthanc,
                                                         const std::string& instanceId,
                                                         unsigned int frame) :
    orthanc_(orthanc),
    dicom_(orthanc, instanceId),
    instance_(instanceId),
    frame_(frame)
  {
    DicomFrameConverter converter;
    converter.ReadParameters(dicom_);
    format_ = converter.GetExpectedPixelFormat();
  }


  SliceGeometry SingleFrameRendererFactory::GetSliceGeometry()
  {
    if (dicom_.HasTag(DICOM_TAG_IMAGE_POSITION_PATIENT) &&
        dicom_.HasTag(DICOM_TAG_IMAGE_ORIENTATION_PATIENT))
    {
      return SliceGeometry(dicom_);
    }
    else
    {
      return SliceGeometry();
    }
  }


  bool SingleFrameRendererFactory::GetExtent(double& x1,
                                             double& y1,
                                             double& x2,
                                             double& y2,
                                             const SliceGeometry& viewportSlice)
  {
    // Assume that PixelSpacingX == PixelSpacingY == 1

    unsigned int width = dicom_.GetUnsignedIntegerValue(DICOM_TAG_COLUMNS);
    unsigned int height = dicom_.GetUnsignedIntegerValue(DICOM_TAG_ROWS);

    x1 = 0;
    y1 = 0;
    x2 = static_cast<double>(width);
    y2 = static_cast<double>(height);

    return true;
  }


  ILayerRenderer* SingleFrameRendererFactory::CreateLayerRenderer(const SliceGeometry& viewportSlice)
  {
    SliceGeometry frameSlice(dicom_);
    return FrameRenderer::CreateRenderer(MessagingToolbox::DecodeFrame(orthanc_, instance_, frame_, format_), 
                                         viewportSlice, frameSlice, dicom_, 1, 1, true);
  }


  ISliceableVolume& SingleFrameRendererFactory::GetSourceVolume() const
  {
    throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
  }
}