/**
 * Stone of Orthanc
 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
 * Department, University Hospital of Liege, Belgium
 * Copyright (C) 2017-2018 Osimis S.A., Belgium
 *
 * This program is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License
 * as published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version.
 *
 * 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
 * Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 **/


#pragma once

#include "../Toolbox/AffineTransform2D.h"
#include "../Toolbox/Extent2D.h"
#include "../Viewport/CairoContext.h"

namespace OrthancStone
{
  class RadiographyLayer : public boost::noncopyable
  {
    friend class RadiographyScene;
      
  private:
    size_t             index_;
    bool               hasSize_;
    unsigned int       width_;
    unsigned int       height_;
    bool               hasCrop_;
    unsigned int       cropX_;
    unsigned int       cropY_;
    unsigned int       cropWidth_;
    unsigned int       cropHeight_;
    AffineTransform2D  transform_;
    AffineTransform2D  transformInverse_;
    double             pixelSpacingX_;
    double             pixelSpacingY_;
    double             panX_;
    double             panY_;
    double             angle_;
    bool               resizeable_;

  protected:
    const AffineTransform2D& GetTransform() const
    {
      return transform_;
    }

  private:
    void UpdateTransform();
      
    void AddToExtent(Extent2D& extent,
                     double x,
                     double y) const;

    void GetCornerInternal(double& x,
                           double& y,
                           Corner corner,
                           unsigned int cropX,
                           unsigned int cropY,
                           unsigned int cropWidth,
                           unsigned int cropHeight) const;

    void SetIndex(size_t index)
    {
      index_ = index;
    }
      
    bool Contains(double x,
                  double y) const;
      
    void DrawBorders(CairoContext& context,
                     double zoom);

  public:
    RadiographyLayer();

    virtual ~RadiographyLayer()
    {
    }

    size_t GetIndex() const
    {
      return index_;
    }

    void ResetCrop()
    {
      hasCrop_ = false;
    }

    void SetCrop(unsigned int x,
                 unsigned int y,
                 unsigned int width,
                 unsigned int height);

    void GetCrop(unsigned int& x,
                 unsigned int& y,
                 unsigned int& width,
                 unsigned int& height) const;

    void SetAngle(double angle);

    double GetAngle() const
    {
      return angle_;
    }

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

    unsigned int GetWidth() const
    {
      return width_;
    }        

    unsigned int GetHeight() const
    {
      return height_;
    }       

    Extent2D GetExtent() const;

    bool GetPixel(unsigned int& imageX,
                  unsigned int& imageY,
                  double sceneX,
                  double sceneY) const;

    void SetPan(double x,
                double y);

    void SetPixelSpacing(double x,
                         double y);

    double GetPixelSpacingX() const
    {
      return pixelSpacingX_;
    }   

    double GetPixelSpacingY() const
    {
      return pixelSpacingY_;
    }   

    double GetPanX() const
    {
      return panX_;
    }

    double GetPanY() const
    {
      return panY_;
    }

    void GetCenter(double& centerX,
                   double& centerY) const;

    void GetCorner(double& x /* out */,
                   double& y /* out */,
                   Corner corner) const;
      
    bool LookupCorner(Corner& corner /* out */,
                      double x,
                      double y,
                      double zoom,
                      double viewportDistance) const;

    bool IsResizeable() const
    {
      return resizeable_;
    }

    void SetResizeable(bool resizeable)
    {
      resizeable_ = resizeable;
    }

    virtual bool GetDefaultWindowing(float& center,
                                     float& width) const = 0;

    virtual void Render(Orthanc::ImageAccessor& buffer,
                        const AffineTransform2D& viewTransform,
                        ImageInterpolation interpolation) const = 0;

    virtual bool GetRange(float& minValue,
                          float& maxValue) const = 0;
  }; 
}